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Wednesday, April 22, 2020

Zion National Park

From Wikipedia, the free encyclopedia
 
Zion National Park
IUCN category II (national park)
Zion angels landing view.jpg
Zion Canyon from Angels Landing at sunset
Map showing the location of Zion National Park
Map showing the location of Zion National Park
Location in the United States
LocationWashington, Kane, and Iron counties, Utah, United States
Nearest citySpringdale (south), Orderville (east) and Cedar City near Kolob Canyons entrance
Coordinates37°18′N 113°00′WCoordinates: 37°18′N 113°00′W
Area146,597 acres (229.058 sq mi; 59,326 ha; 593.26 km2)
EstablishedNovember 19, 1919
Visitors4,320,033 (in 2018)
Governing bodyNational Park Service
WebsiteOfficial website

Zion National Park is an American national park located in southwestern Utah near the town of Springdale. A prominent feature of the 229-square-mile (590 km2) park is Zion Canyon, which is 15 miles (24 km) long and up to 2,640 ft (800 m) deep. The canyon walls are reddish and tan-colored Navajo Sandstone eroded by the North Fork of the Virgin River. The lowest point in the park is 3,666 ft (1,117 m) at Coalpits Wash and the highest peak is 8,726 ft (2,660 m) at Horse Ranch Mountain. Located at the junction of the Colorado Plateau, Great Basin, and Mojave Desert regions, the park has a unique geography and a variety of life zones that allow for unusual plant and animal diversity. Numerous plant species as well as 289 species of birds, 75 mammals (including 19 species of bat), and 32 reptiles inhabit the park's four life zones: desert, riparian, woodland, and coniferous forest. Zion National Park includes mountains, canyons, buttes, mesas, monoliths, rivers, slot canyons, and natural arches.

Human habitation of the area started about 8,000 years ago with small family groups of Native Americans, one of which was the semi-nomadic Basketmaker Anasazi (c. 300 CE). Subsequently, the Virgin Anasazi culture (c. 500) and the Parowan Fremont group developed as the Basketmakers settled in permanent communities. Both groups moved away by 1300 and were replaced by the Parrusits and several other Southern Paiute subtribes. Mormons came into the area in 1858 and settled there in the early 1860s. In 1909, President William Howard Taft named the area Mukuntuweap National Monument in order to protect the canyon. In 1918, the acting director of the newly created National Park Service, Horace Albright, drafted a proposal to enlarge the existing monument and change the park's name to Zion National Monument, Zion being a term used by the Mormons. According to historian Hal Rothman: "The name change played to a prevalent bias of the time. Many believed that Spanish and Indian names would deter visitors who, if they could not pronounce the name of a place, might not bother to visit it. The new name, Zion, had greater appeal to an ethnocentric audience." On November 19, 1919, Congress redesignated the monument as Zion National Park, and the act was signed by President Woodrow Wilson. The Kolob section was proclaimed a separate Zion National Monument in 1937, but was incorporated into the national park in 1956.

The geology of the Zion and Kolob canyons area includes nine formations that together represent 150 million years of mostly Mesozoic-aged sedimentation. At various periods in that time warm, shallow seas, streams, ponds and lakes, vast deserts, and dry near-shore environments covered the area. Uplift associated with the creation of the Colorado Plateau lifted the region 10,000 feet (3,000 m) starting 13 million years ago.

Geography

The park is located in southwestern Utah in Washington, Iron and Kane counties. Geomorphically, it is located on the Markagunt and Kolob plateaus, at the intersection of three North American geographic provinces: the Colorado Plateau, the Great Basin, and the Mojave Desert. The northern part of the park is known as the Kolob Canyons section and is accessible from Interstate 15, exit 40.

The 8,726-foot (2,660 m) summit of Horse Ranch Mountain is the highest point in the park; the lowest point is the 3,666-foot (1,117 m) elevation of Coal Pits Wash, creating a relief of about 5,100 feet (1,600 m).

Streams in the area take rectangular paths because they follow jointing planes in the rocks. The stream gradient of the Virgin River, whose North Fork flows through Zion Canyon in the park, ranges from 50 to 80 feet per mile (9.5 to 15.2 m/km) (0.9–1.5%)—one of the steepest stream gradients in North America.

Towers of the Virgin

The road into Zion Canyon is 6 miles (9.7 km) long, ending at the Temple of Sinawava, which is named for the coyote god of the Paiute Indians. The canyon becomes more narrow near the Temple and a hiking trail continues to the mouth of The Narrows, a gorge only 20 feet (6 m) wide and up to 2,000 feet (610 m) tall. The Zion Canyon road is served by a free shuttle bus from early April to late October and by private vehicles the other months of the year. Other roads in Zion are open to private vehicles year-round.

The east side of the park is served by Zion-Mount Carmel Highway (SR-9), which passes through the Zion–Mount Carmel Tunnel and ends at Mount Carmel. On the east side of the park, notable park features include Checkerboard Mesa and the East Temple.

The Kolob Terrace area, northwest of Zion Canyon, features a slot canyon called The Subway, and a panoramic view of the entire area from Lava Point. The Kolob Canyons section, further to the northwest near Cedar City, features Tucupit Point and one of the world's longest natural arches, Kolob Arch.

Other notable geographic features of Zion Canyon include Angels Landing, The Great White Throne, the Court of the Patriarchs, The West Temple, Towers of the Virgin, the Altar of Sacrifice, the Watchman, Weeping Rock, and the Emerald Pools.

Spring weather is unpredictable, with stormy, wet days being common, mixed with occasional warm, sunny weather. Precipitation is normally heaviest in March. Spring wildflowers bloom from April through June, peaking in May. Fall days are usually clear and mild; nights are often cool. Summer days are hot (95 to 110 °F; 35 to 43 °C), but overnight lows are usually comfortable (65 to 70 °F; 18 to 21 °C). Afternoon thunderstorms are common from mid-July through mid-September. Storms may produce waterfalls as well as flash floods. Autumn tree-color displays begin in September in the high country; in Zion Canyon, autumn colors usually peak in late October. Winter in Zion Canyon is fairly mild. Winter storms bring rain or light snow to Zion Canyon and heavier snow to the higher elevations. Clear days may become quite warm, reaching 60 °F (16 °C); nights are often 20 to 40 °F (−7 to 4 °C). Winter storms can last several days and make roads icy. Zion roads are plowed, except the Kolob Terrace Road which is closed when covered with snow. Winter driving conditions last from November through March.

Climate

Zion National Park has a BWk (Köppen climate classification) cold desert type of climate consisting of hot summers and cold winters with a limited amount of precipitation throughout the year.[19]

Climate data for Zion National Park (1981–2010)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 73
(23)
89
(32)
91
(33)
97
(36)
106
(41)
114
(46)
115
(46)
112
(44)
110
(43)
99
(37)
86
(30)
81
(27)
115
(46)
Average high °F (°C) 54.2
(12.3)
58.3
(14.6)
66.2
(19.0)
74.3
(23.5)
85.2
(29.6)
95.7
(35.4)
101.0
(38.3)
98.3
(36.8)
91.0
(32.8)
78.3
(25.7)
63.5
(17.5)
53.3
(11.8)
76.7
(24.8)
Daily mean °F (°C) 42.3
(5.7)
45.9
(7.7)
52.3
(11.3)
59.1
(15.1)
68.9
(20.5)
78.8
(26.0)
85.0
(29.4)
83.0
(28.3)
75.6
(24.2)
63.6
(17.6)
50.3
(10.2)
41.4
(5.2)
62.3
(16.8)
Average low °F (°C) 30.3
(−0.9)
33.5
(0.8)
38.3
(3.5)
43.9
(6.6)
52.7
(11.5)
62.0
(16.7)
69.0
(20.6)
67.7
(19.8)
60.3
(15.7)
48.8
(9.3)
37.0
(2.8)
29.5
(−1.4)
47.8
(8.8)
Record low °F (°C) −15
(−26)
0
(−18)
10
(−12)
21
(−6)
20
(−7)
7
(−14)
41
(5)
35
(2)
33
(1)
17
(−8)
−10
(−23)
−5
(−21)
−15
(−26)
Average precipitation inches (mm) 1.82
(46)
1.98
(50)
2.04
(52)
1.31
(33)
0.67
(17)
0.31
(7.9)
1.22
(31)
1.45
(37)
1.04
(26)
1.30
(33)
1.42
(36)
1.63
(41)
16.19
(409.9)
Average snowfall inches (cm) 0.9
(2.3)
1.0
(2.5)
0.7
(1.8)
0.1
(0.25)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.5
(1.3)
1.0
(2.5)
4.2
(10.65)
Average precipitation days (≥ 0.01 in) 6.5 7.8 7.8 6.1 4.4 2.7 5.1 6.6 4.7 5.1 4.8 6.4 68
Average snowy days (≥ 0.1 in) 0.6 0.5 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.6 2.5

History

Archaeologists have divided the long span of Zion's human history into three cultural periods: the Archaic, Protohistoric and Historic periods. Each period is characterized by distinctive technological and social adaptations.

Archaic period

The first human presence in the region dates to 8,000 years ago when family groups camped where they could hunt or collect plants and seeds. About 2,000 years ago, some groups began growing corn and other crops, leading to an increasingly sedentary lifestyle. Later groups in this period built permanent villages called pueblos. Archaeologists call this the Archaic period and it lasted until c. 500. Baskets, cordage nets, and yucca fiber sandals have been found and dated to this period. The Archaic toolkits included flaked stone knives, drills, and stemmed dart points. The dart points were attached to wooden shafts and propelled by throwing devices called atlatls.

By c. 300, some of the archaic groups developed into an early branch of seminomadic Anasazi, the Basketmakers. Basketmaker sites have grass- or stone-lined storage cists and shallow, partially underground dwellings called pithouses. They were hunters and gatherers who supplemented their diet with limited agriculture. Locally collected pine nuts were important for food and trade.

Protohistoric period

Kaun huts were used by Southern Paiute

Both the Virgin Anasazi and the Parowan Fremont disappear from the archaeological record of southwestern Utah by c. 1300. Extended droughts in the 11th and 12th centuries, interspersed with catastrophic flooding, may have made horticulture impossible in this arid region.

Tradition and archaeological evidence hold that their replacements were Numic-speaking cousins of the Virgin Anasazi, such as the Southern Paiute and Ute. The newcomers migrated on a seasonal basis up and down valleys in search of wild seeds and game animals. Some, particularly the Southern Paiute, also planted fields of corn, sunflowers, and squash to supplement their diet. These more sedentary groups made brownware vessels that were used for storage and cooking.

Exploration and settlement by Euro-Americans

The Historic period begins in the late 18th century with the exploration of southern Utah by Padres Silvestre Vélez de Escalante and Francisco Atanasio Domínguez. The padres passed near what is now the Kolob Canyons Visitor Center on October 13, 1776, becoming the first people of European descent known to visit the area. In 1825, trapper and trader Jedediah Smith explored some of the downstream areas while under contract with the American Fur Company.

In 1847, Mormon farmers from the Salt Lake area became the first people of European descent to settle the Virgin River region. In 1851, the Parowan and Cedar City areas were settled by Mormons who used the Kolob Canyons area for timber, and for grazing cattle, sheep, and horses. They prospected for mineral deposits, and diverted Kolob water to irrigate crops in the valley below. Mormon settlers named the area Kolob—in Mormon scripture, the heavenly place nearest the residence of God.

A ranch near the mouth of Zion Canyon (c. 1910s)
 
Settlements had expanded 30 miles (48 km) south to the lower Virgin River by 1858. That year, a Southern Paiute guide led young Mormon missionary and interpreter Nephi Johnson into the upper Virgin River area and Zion Canyon. Johnson wrote a favorable report about the agricultural potential of the upper Virgin River basin, and returned later that year to found the town of Virgin. In 1861 or 1862, Joseph Black made the arduous journey to Zion Canyon and was very impressed by its beauty.

The floor of Zion Canyon was settled in 1863 by Isaac Behunin, who farmed corn, tobacco, and fruit trees. The Behunin family lived in Zion Canyon near the site of today's Zion Lodge during the summer, and wintered in Springdale. Behunin is credited with naming Zion, a reference to the place of peace mentioned in the Bible. Two more families settled Zion Canyon in the next couple of years, bringing with them cattle and other domesticated animals. The canyon floor was farmed until Zion became a Monument in 1909.

The Powell Geographic Expedition of 1869 entered the area after their first trip through the Grand Canyon. John Wesley Powell visited Zion Canyon in 1872 and named it Mukuntuweap, under the impression that that was the Paiute name. Powell Survey photographers John K. Hillers and James Fennemore first visited the Zion Canyon and Kolob Plateau region in the spring of 1872. Hillers returned in April 1873 to add more photographs to the "Virgin River Series" of photographs and stereographs. Hillers described wading the canyon for four days and nearly freezing to death to take his photographs.

Protection and tourism

Painting of Zion Canyon by Frederick S. Dellenbaugh (1903)

Paintings of the canyon by Frederick S. Dellenbaugh were exhibited at the Saint Louis World's Fair in 1904, followed by a favorable article in Scribner's Magazine the next year. The article and paintings, along with previously created photographs, paintings, and reports, led to President William Howard Taft's proclamation on July 31, 1909 that created Mukuntuweap National Monument. In 1917, the acting director of the newly created National Park Service visited the canyon and proposed changing its name from the locally unpopular Mukuntuweap to Zion, a name used by the local Mormon community. The United States Congress added more land and established Zion National Park on November 19, 1919. A separate Zion National Monument, the Kolob Canyons area, was proclaimed on January 22, 1937, and was incorporated into the park on July 11, 1956.

Travel to the area before it was a national park was rare due to its remote location, lack of accommodations, and the absence of real roads in southern Utah. Old wagon roads were upgraded to the first automobile roads starting about 1910, and the road into Zion Canyon was built in 1917 leading to the Grotto, short of the present road that now ends at the Temple of Sinawava.

1938 poster of Zion National Park

Touring cars could reach Zion Canyon by the summer of 1917. The first visitor lodging in Zion Canyon, called Wylie Camp, was established that same year as a tent camp. The Utah Parks Company, a subsidiary of the Union Pacific Railroad, acquired Wylie Camp in 1923, and offered ten-day rail/bus tours to Zion, nearby Bryce Canyon, the Kaibab Plateau, and the North Rim of the Grand Canyon. The Zion Lodge complex was built in 1925 at the site of the Wylie tent camp. Architect Gilbert Stanley Underwood designed the Zion Lodge in a rustic architectural style, while the Utah Parks Company funded the construction.

Infrastructure improvements

Work on the Zion Mount Carmel Highway started in 1927 to enable reliable access between Springdale and the east side of the park. The road opened in 1930 and park visit and travel in the area greatly increased. The most famous feature of the Zion – Mount Carmel Highway is its 1.1-mile (1.8 km) tunnel, which has six large windows cut through the massive sandstone cliff.

In 1896, local rancher John Winder improved the Native American footpath up Echo Canyon, which later became the East Rim Trail. Entrepreneur David Flanigan used this trail in 1900 to build cableworks that lowered lumber into Zion Canyon from Cable Mountain. More than 200,000 board feet (470 m3) of lumber were lowered by 1906. The auto road was extended to the Temple of Sinawava, and a trail built from there 1 mile (1.6 km) to the start of the Narrows. Angel's Landing Trail was constructed in 1926 and two suspension bridges were built over the Virgin River. Other trails were constructed by the Civilian Conservation Corps during the 1930s.

More recent history

The Altar of Sacrifice (center) with reddish, blood-like streaks

Zion National Park has been featured in numerous films, including The Deadwood Coach (1924), Arizona Bound (1927), Nevada (1927), Ramrod (1947) and Butch Cassidy and the Sundance Kid (1969).

Zion Canyon Scenic Drive provides access to Zion Canyon. Traffic congestion in the narrow canyon was recognized as a major problem in the 1990s and a public transportation system using propane-powered shuttle buses was instituted in the year 2000. As part of its shuttle fleet, Zion has two electric trams each holding up to 36 passengers. Usually from early April through late October, the scenic drive in Zion Canyon is closed to private vehicles and visitors ride the shuttle buses. The National Park Service has contracted the management of the shuttle bus system to transit operator RATP Dev.

Zion shuttle bus stops are marked with numbers
 
On April 12, 1995, heavy rains triggered a landslide that blocked the Virgin River in Zion Canyon. Over a period of two hours, the river carved away part of the only exit road from the canyon, trapping 450 guests and employees at the Zion Lodge. A one-lane, temporary road was constructed within 24 hours to allow evacuation of the Lodge. A more stable — albeit temporary — road was completed on May 25, 1995 to allow summer visitors to access the canyon. This road was replaced with a permanent road during the first half of 1996.

The Zion–Mount Carmel Highway can be travelled year-round. Access for oversized vehicles requires a special permit, and is limited to daytime hours, as traffic through the tunnel must be one way to accommodate large vehicles. The 5-mile (8.0 km)-long Kolob Canyons Road was built to provide access to the Kolob Canyons section of the park. This road often closes in the winter. 

In March 2009, President Barack Obama signed into law the Omnibus Public Land Management Act of 2009, which designated and further protected 124,406 acres (50,345 ha) of park land as the Zion Wilderness

In September 2015, flooding trapped a party of seven in Keyhole Canyon, a slot canyon in the park. The flash flood killed all seven members of the group, whose remains were located after a search lasting several days.

On March 25, 2020, the park campgrounds were closed to help prevent the spread of COVID-19.

Geology

The Three Patriarchs in Zion Canyon are made of Navajo Sandstone
 
The nine known exposed geologic formations in Zion National Park are part of a super-sequence of rock units called the Grand Staircase. Together, these formations represent about 150 million years of mostly Mesozoic-aged sedimentation in that part of North America. The formations exposed in the Zion area were deposited as sediment in very different environments:
The Kolob Canyons are a set of finger canyons cut into the Kolob Plateau
 
Uplift affected the entire region, known as the Colorado Plateaus, by slowly raising these formations more than 10,000 feet (3,000 m) higher than where they were deposited. This steepened the stream gradient of the ancestral Virgin and other rivers on the plateau. 

The faster-moving streams took advantage of uplift-created joints in the rocks. Eventually, all Cenozoic-aged formations were removed and gorges were cut into the plateaus. Zion Canyon was cut by the North Fork of the Virgin River in this way. During the later part of this process, lava flows and cinder cones covered parts of the area.

High water volume in wet seasons does most of the downcutting in the main canyon. These flood events are responsible for transporting most of the 3 million short tons (2.7 million metric tons) of rock and sediment that the Virgin River transports yearly. The Virgin cuts away its canyon faster than its tributaries can cut away their own streambeds, so tributaries end in waterfalls from hanging valleys where they meet the Virgin. The valley between the peaks of the Twin Brothers is a notable example of a hanging valley in the canyon.

Table of formations exposed in Zion National Park
Rock layer Appearance Location Deposition Rock type Photo
Dakota Formation Cliffs Top of Horse Ranch Mountain Streams Conglomerate and sandstone Dakota Sandstone
Carmel Formation Cliffs Mount Carmel Junction Shallow sea and coastal desert Limestone, sandstone and gypsum Carmel Formation
Temple Cap Formation Cliffs Top of West Temple Desert Sandstone Temple Cap Formation atop Navajo Sandstone
Navajo Sandstone Steep cliffs 1,600 to 2,200 ft (490 to 670 m) thick; red lower layers are colored by iron oxides Tall cliffs of Zion Canyon; highest exposure is West Temple; cross-bedding shows well at Checkerboard Mesa (photo) Sand dunes covered 150,000 sq mi (390,000 km2); shifting winds during deposition created cross-bedding Sandstone Navajo Sandstone
Kayenta Formation Rocky slopes Throughout canyon Streams Siltstone and sandstone Kayenta Formation
Moenave Formation Slopes and ledges Lower red cliffs seen from Zion Human History Museum Streams and ponds Siltstone and sandstone Moenave Formation
Chinle Formation Purplish slopes Above Rockville Streams Shale, loose clay and conglomerate Chinle Formation
Moenkopi Formation Chocolate cliffs with white bands Rocky slopes from Virgin to Rockville Shallow sea Shale, siltstone, sandstone, mudstone, and limestone Moenkopi Formation
Kaibab Limestone Cliffs Hurricane Cliffs along I-15 near Kolob Canyons Shallow sea Limestone Hurricane Cliffs/Kaibab Limestone

Biology

Taylor Creek with Horse Ranch Mountain in background. Desert, riparian, woodland, and coniferous forest habitats are all visible.
 
The Great Basin, Mojave Desert, and Colorado Plateau converge at Zion and the Kolob canyons. This, along with the varied topography of canyonmesa country, differing soil types, and uneven water availability, provides diverse habitat for the equally diverse mix of plants and animals that live in the area. The park is home to 289 bird, 79 mammals, 28 reptiles, 7 fish, and 6 amphibian species. These organisms make their homes in one or more of four life zones found in the Park: desert, riparian, woodland, and coniferous forest.

Desert conditions persist on canyon bottoms and rocky ledges away from perennial streams. Sagebrush, prickly pear cactus, and rabbitbrush, along with sacred datura and Indian paintbrush, are common. Utah penstemon and golden aster can also be found. Milkvetch and prince's plume are found in pockets of selenium-rich soils.

Common daytime animals include mule deer, rock squirrels, pinyon jays, and whiptail and collared lizards. Desert cottontails, jackrabbits, and Merriam's kangaroo rats come out at night. Cougars, bobcats, coyotes, badgers, gray foxes, and ring-tail cats are the top predators.

Cooler conditions persist at mid-elevation slopes, from 3,900 to 5,500 feet (1,200 to 1,700 m). Stunted forests of pinyon pine and juniper coexist here with manzanita shrubs, cliffrose, serviceberry, scrub oak, and yucca. Stands of ponderosa pine, Gambel oak, manzanita and aspen populate the mesas and cliffs above 6,000 feet (1,800 m).

Desert bighorn sheep are often visible near the roadway in the park.
 
Golden eagles, red-tailed hawks, peregrine falcons, and white-throated swifts can be seen in the area. Desert bighorn sheep were reintroduced in the park in 1973. California condors were reintroduced in the Arizona Strip and in 2014 the first successful breeding of condors in the park was confirmed.[56] Nineteen species of bat also live in the area.

Boxelder, Fremont cottonwood, maple, and willow dominate riparian plant communities. Animals such as bank beavers, flannel-mouth suckers, gnatcatchers, dippers, canyon wrens, the virgin spinedace, and water striders all make their homes in the riparian zones.

Activities

Guided horseback riding trips, nature walks, and evening programs are available from late March to early November. The Junior Ranger Program for ages 6–12 is active from Memorial Day to Labor Day at the Zion Nature Center. Rangers at the visitor centers in Zion Canyon and Kolob Canyons can help visitors plan their stay. A bookstore attached to the Zion Canyon visitor center offers books, maps, and souvenirs. The Grotto in Zion Canyon, the visitor center, and the viewpoint at the end of Kolob Canyons Road have the only designated picnic sites.

The Subway, a slot canyon within the Kolob Terrace section
Trails
Seven trails with round-trip times of half an hour (Weeping Rock) to 4 hours (Angels Landing) are found in Zion Canyon. Two popular trails, Taylor Creek (4 hours round trip) and Kolob Arch (8 hours round trip), are in the Kolob Canyons section of the park, near Cedar City. Hiking up into The Narrows from the Temple of Sinawava is popular in summer; however, hiking beyond Big Springs requires a permit. The entire Narrows from Chamberlain's Ranch is a 16-mile one way trip that typically takes 12 hours of strenuous hiking. A shorter alternative is to enter the Narrows via Orderville Canyon. Both Orderville and the full Narrows require a back country permit. Entrance to the Parunuweap Canyon section of the park downstream of Labyrinth Falls is prohibited. Other often-used backcountry trails include the West Rim and LaVerkin Creek. The more primitive sections of Zion include the Kolob Terrace and the Kolob Canyons. A network of trails totaling 50 miles in distance connect Zion's northwest corner of the park (Lee Pass Trailhead) to its southeast section (East Rim Trailhead). Popularly known as the Zion Traverse, the route offers backpackers a diverse experience of the park. 

Zion is a center for rock climbing, with short walls like Spaceshot, Moonlight Buttress, Prodigal Son, Ashtar Command, and Touchstone being the most popular, highly rated routes.
Camping and lodging
Zion Lodge accommodations
 
Lodging in the park is available at Zion Lodge, located halfway through Zion Canyon. Three campgrounds are available: South and Watchman at the far southern side of the park, and a primitive site at Lava Point in the middle of the park off Kolob Terrace Road. Overnight camping in the backcountry requires permits.

Asian elephant

From Wikipedia, the free encyclopedia
 
Asian elephant
Temporal range:
PlioceneHolocene, 2.5–0 Ma
O
S
D
C
P
T
J
K
N
Elephas maximus (Bandipur).jpg
A tusked male Asian elephant in Bandipur National Park, Karnataka, India
Elephas maximus maximus - 01.jpg
A female Asian elephant with calf in Minneriya National Park, Sri Lanka
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Proboscidea
Family: Elephantidae
Genus: Elephas
Species:
E. maximus
Binomial name
Elephas maximus
Subspecies
E. m. maximus
E. m. indicus
E. m. sumatranus
E. m. borneensis
E. m. sondaicus
Elephas Maximus distribution evolution map.svg
Asian elephant historical range (pink) and current range (red)

The Asian elephant (Elephas maximus), also called Asiatic elephant, is the only living species of the genus Elephas and is distributed throughout the Indian subcontinent and Southeast Asia, from India in the west, Nepal in the north, Sumatra in the south, and to Borneo in the east. Three subspecies are recognised—E. m. maximus from Sri Lanka, E. m. indicus from mainland Asia and E. m. sumatranus from the island of Sumatra.

The Asian elephant is the largest living land animal in Asia. Since 1986, the Asian elephant has been listed as Endangered on the IUCN Red List, as the population has declined by at least 50 percent over the last three generations, estimated to be 60–75 years. It is primarily threatened by loss of habitat, habitat degradation, fragmentation and poaching. In 2003, the wild population was estimated at between 41,410 and 52,345 individuals. Female captive elephants have lived beyond 60 years when kept in semi-natural surroundings, such as forest camps. In zoos, Asian elephants die at a much younger age; captive populations are declining due to a low birth and high death rate.

The genus Elephas originated in Sub-Saharan Africa during the Pliocene and spread throughout Africa before expanding into the southern half of Asia. The earliest indications of captive use of Asian elephants are engravings on seals of the Indus Valley Civilisation dated to the 3rd millennium BC.

Taxonomy

Sri Lankan elephants

Elephas maximus was the scientific name proposed by Carl Linnaeus in 1758 who described the genus and an elephant from Ceylon. Elephas indicus was proposed by Georges Cuvier in 1798, who described an elephant from India. Elephas sumatranus was proposed by Coenraad Jacob Temminck in 1847 who described an elephant from Sumatra. Frederick Nutter Chasen classified all three as subspecies of the Asian elephant in 1940. These three subspecies are currently recognised as valid taxa.

Elephas maximus borneensis was proposed by Paules Edward Pieris Deraniyagala in 1950 who described an elephant in an illustration published in the National Geographic magazine, but not a living elephant in accordance with the rules of the International Code of Zoological Nomenclature. The Asian elephants living in northern Borneo are smaller than all the other subspecies, but with larger ears, a longer tail, and straight tusks. Results of genetic analysis indicate that its ancestors separated from the mainland population about 300,000 years ago.

The following Asian elephants were proposed as extinct subspecies, but are considered synonymous with the Indian elephant:
  • Syrian elephant (E. m. asurus) proposed by Deraniyagala in 1950 was based on Bronze Age illustrations.
  • Chinese elephant (E. m. rubridens) also proposed by Deraniyagala in 1950 was based on a bronze statuette of an elephant.
  • Javan elephant (E. m. sondaicus) also by Deraniyagala in 1950 was an illustration of a carving on the Buddhist monument of Borobudur.

Characteristics

Illustration of an elephant skeleton
 
The nail-like structures on the toes of an Asian elephant
 
In general, the Asian elephant is smaller than the African bush elephant and has the highest body point on the head. The back is convex or level. The ears are small with dorsal borders folded laterally. It has up to 20 pairs of ribs and 34 caudal vertebrae. The feet have more nail-like structures than those of African elephants—five on each forefoot, and four on each hind foot.

Size

On average, males are about 2.75 m (9.0 ft) tall at the shoulder and 4 t (4.4 short tons) in weight, while females are smaller at about 2.4 m (7.9 ft) at the shoulder and 2.7 t (3.0 short tons) in weight. Length of body and head including trunk is 5.5–6.5 m (18–21 ft) with the tail being 1.2–1.5 m (3.9–4.9 ft) long. The largest bull elephant ever recorded was shot by the Maharajah of Susang in the Garo Hills of Assam, India in 1924, it weighed an estimated 7 t (7.7 short tons), stood 3.43 m (11.3 ft) tall at the shoulder and was 8.06 m (26.4 ft) long from head to tail. There are reports of larger individuals as tall as 3.7 m (12 ft).

Trunk

Asian elephant drinking water

The distinctive trunk is an elongation of the nose and upper lip combined; the nostrils are at its tip, which has a one finger-like process. The trunk contains as many as 60,000 muscles, which consist of longitudinal and radiating sets. The longitudinals are mostly superficial and subdivided into anterior, lateral, and posterior. The deeper muscles are best seen as numerous distinct fasciculi in a cross-section of the trunk. The trunk is a multipurpose prehensile organ and highly sensitive, innervated by the maxillary division of the trigeminal nerve and by the facial nerve. The acute sense of smell uses both the trunk and Jacobson's organ. Elephants use their trunks for breathing, watering, feeding, touching, dusting, sound production and communication, washing, pinching, grasping, defence and offence.

The "proboscis" or trunk consists wholly of muscular and membranous tissue, and is a tapering muscular structure of nearly circular cross-section extending proximally from attachment at the anterior nasal orifice, and ending distally in a tip or finger. The length may vary from 1.5 to 2 m (59 to 79 in) or longer depending on the species and age. Four basic muscle masses—the radial, the longitudinal and two oblique layers—and the size and attachments points of the tendon masses allow the shortening, extension, bending, and twisting movements accounting for the ability to hold, and manipulate loads of up to 300 kg (660 lb). Muscular and tendinous ability combined with nervous control allows extraordinary strength and agility movements of the trunk, such as sucking and spraying of water or dust and directed air flow blowing.

The trunk can hold about four litres of water. Elephants will playfully wrestle with each other using their trunks, but generally use their trunks only for gesturing when fighting.

Tusks

Tusker debarking a tree

Tusks serve to dig for water, salt, and rocks, to debark and uproot trees, as levers for maneuvering fallen trees and branches, for work, for display, for marking trees, as weapon for offence and defence, as trunk-rests, and as protection for the trunk. Elephants are known to be right or left tusked.

Female Asian elephants usually lack tusks; if tusks—in that case called "tushes"—are present, they are barely visible, and only seen when the mouth is open.[citation needed] The enamel plates of the molars are greater in number and closer together in Asian elephants. Some males may also lack tusks; these individuals are called "filsy makhnas", and are especially common among the Sri Lankan elephant population. Furthermore, the forehead has two hemispherical bulges, unlike the flat front of the African elephant. Unlike African elephants which rarely use their forefeet for anything other than digging or scraping soil, Asian elephants are more agile at using their feet in conjunction with the trunk for manipulating objects. They can sometimes be known for their violent behaviour.

A record tusk described by George P. Sanderson measured 5 ft (1.5 m) along the curve, with a girth of 16 in (41 cm) at the point of emergence from the jaw, the weight being 104 12 lb (47.4 kg). This was from an elephant killed by Sir Brooke and measured 8 ft (2.4 m) in length, and nearly 17 in (43 cm) in circumference, and weighed 90 lb (41 kg). The tusk's weight was, however, exceeded by the weight of a shorter tusk of about 6 ft (1.8 m) in length which weighed 100 lb (45 kg).

Skin

Depigmented skin on the forehead and ears of an Asian elephant
 
Skin colour is usually grey, and may be masked by soil because of dusting and wallowing. Their wrinkled skin is movable and contains many nerve centres. It is smoother than that of African elephants, and may be depigmented on the trunk, ears, or neck. The epidermis and dermis of the body average 18 mm (0.71 in) thick; skin on the dorsum is 30 mm (1.2 in) thick providing protection against bites, bumps, and adverse weather. Its folds increase surface area for heat dissipation. They can tolerate cold better than excessive heat. Skin temperature varies from 24 to 32.9 °C (75.2 to 91.2 °F). Body temperature averages 35.9 °C (96.6 °F).

Intelligence

Asian elephants have a very large and highly developed neocortex, a trait also shared by humans, apes and certain dolphin species. They have a greater volume of cerebral cortex available for cognitive processing than all other existing land animals. Results of studies indicate that Asian elephants have cognitive abilities for tool use and tool-making similar to great apes. They exhibit a wide variety of behaviours, including those associated with grief, learning, allomothering, mimicry, play, altruism, use of tools, compassion, cooperation, self-awareness, memory, and language. Elephants are reported to head to safer ground during natural disasters like tsunamis and earthquakes, although there have been no scientific records of this since it is hard to recreate or predict natural disasters.

Several students of elephant cognition and neuroanatomy are convinced that Asian elephants are highly intelligent and self-aware. Others contest this view.

Distribution and habitat

An elephant herd in the grasslands of Jim Corbett National Park
 
Asian elephant grazing on the banks of Kabini River, Nagarhole National Park
 
Asian elephant in Thailand
 
Asian elephant walking in Tad Lo river, Salavan Province, Laos.
 
Asian elephants inhabit grasslands, tropical evergreen forests, semi-evergreen forests, moist deciduous forests, dry deciduous forests and dry thorn forests, in addition to cultivated and secondary forests and scrublands. Over this range of habitat types elephants occur from sea level to over 3,000 m (9,800 ft). In the eastern Himalaya in northeast India, they regularly move up above 3,000 m (9,800 ft) in summer at a few sites.

In China, the Asian elephant survives only in the prefectures of Xishuangbanna, Simao, and Lincang of southern Yunnan

In Bangladesh, some isolated populations survive in the south-east Chittagong Hills. A herd of 20–25 wild elephants was reported as being present in the Garo Hills of Mymensingh in the late-1990s, being detached from a big herd in the Peack hills of India and prevented from returning by fences put up in the meantime by the Indian border security force. The herd was estimated at about 60 individuals in 2014.

Three subspecies are recognised:
The Borneo elephant occurs in Borneo's northern and northeastern parts. In 2003, mitochondrial DNA analysis and microsatellite data indicated that the Borneo elephant population is derived from stock that originated in the region of the Sunda Islands. The genetic divergence of Borneo elephants warrants their recognition as a separate Evolutionarily Significant Unit.

Ecology and behaviour

A 5-month-old calf and its 17-month-old cousin in a sanctuary in Laos
 
Elephants are crepuscular. They are classified as megaherbivores and consume up to 150 kg (330 lb) of plant matter per day. They are generalist feeders, and are both grazers and browsers. They are known to feed on at least 112 different plant species, most commonly of the order Malvales, as well as the legume, palm, sedge and true grass families. They browse more in the dry season with bark constituting a major part of their diet in the cool part of that season. They drink at least once a day and are never far from a permanent source of fresh water. They need 80–200 litres of water a day and use even more for bathing. At times, they scrape the soil for clay or minerals.

Adult females and calves move about together as groups, while adult males disperse from their mothers upon reaching adolescence. Bull elephants are solitary or form temporary 'bachelor groups'. Cow-calf units generally tend to be small, typically consisting of three adults (most likely related females) and their offspring. Larger groups of as many as 15 adult females have also been recorded. Seasonal aggregations of 17 individuals including calves and young adults have been observed in Sri Lanka's Uda Walawe National Park. Until recently, Asian elephants, like African elephants, were thought to be under the leadership of older adult females, or matriarchs. It is now recognized that females form extensive and very fluid social networks, with varying degrees of associations between individuals. Social ties generally tend to be weaker than in African elephants.

Elephants are able to distinguish low-amplitude sounds. They can use infrasound to communicate.
Rarely, tigers have been recorded attacking and killing calves, especially if the calves become separated from their mothers, stranded from their herd, or orphaned. Adults are largely invulnerable to natural predation. There is a singular anecdotal case of a mother Asian elephant allegedly being killed alongside her calf; however, this account is contestable. In 2011 and 2014, two instances were recorded of tigers successfully killing adult elephants; one by a single tiger in Jim Corbett National Park on a 20-year-old elephant, and another on a 28-year-old elephant in Kaziranga National Park further east, which was taken down and eaten by several tigers hunting cooperatively.

Reproduction

Indian elephants in the Coimbatore Forests, Tamil Nadu
 
A cow elephant with suckling young at the Chester Zoo

Bulls will fight one another to get access to oestrous females. Strong fights over access to females are extremely rare. Bulls reach sexual maturity around the age of 12–15. Between the age of 10 and 20 years, bulls undergo an annual phenomenon known as "musth". This is a period where the testosterone level is up to 100 times greater than non-musth periods, and they become aggressive. Secretions containing pheromones occur during this period, from the paired temporal glands located on the head between the lateral edge of the eye and the base of the ear.

The gestation period is 18–22 months, and the female gives birth to one calf, only occasionally twins. The calf is fully developed by the 19th month, but stays in the womb to grow so that it can reach its mother to feed. At birth, the calf weighs about 100 kg (220 lb), and is suckled for up to three years. Once a female gives birth, she usually does not breed again until the first calf is weaned, resulting in a four to five-year birth interval. Females stay on with the herd, but mature males are chased away.

Asiatic elephants reach adulthood at 17 years of age in both sexes. Elephants' life expectancy has been exaggerated in the past. They live on average for 60 years in the wild and 80 in captivity.

Generation length of the Asian elephant is 22 years.

Females produce sex pheromones. A principal component thereof, (Z)-7-dodecen-1-yl acetate, has also been found to be a sex pheromone in numerous species of insects.

Threats

The pre-eminent threats to the Asian elephant today are the loss, degradation and fragmentation of its habitat, which leads to increasing conflicts between humans and elephants. Asian elephants are poached for ivory and a variety of other products including meat and leather. The demand for elephant skin has risen due to it being an increasingly-common ingredient in traditional Chinese medicine.

Human–elephant conflict

Prime elephant habitat cleared for jhum—a type of shifting cultivation practiced in Arunachal Pradesh
 
Elephants on the road in Khao Yai National Park, Thailand
 
One of the major instigators of human–wildlife conflict in general is competition for space. This is especially true for wild Asian elephants, which require relatively large territories to live in. Destruction of forests through logging, encroachment, slash-and-burn, shifting cultivation, and monoculture tree plantations are major threats to the survival of elephants. Human–elephant conflicts occur when elephants raid crops of shifting cultivators in fields, which are scattered over a large area interspersed with forests. Depredation in human settlements is another major area of human–elephant conflict occurring in small forest pockets, encroachments into elephant habitat, and on elephant migration routes. However, studies in Sri Lanka indicate that traditional slash-and-burn agriculture may create optimal habitat for elephants by creating a mosaic of successional-stage vegetation. Populations inhabiting small habitat fragments are much more liable to come into conflict with humans.

Human-elephant conflict can be categorised into:
Development such as border fencing along the India-Bangladesh border has become a major impediment to the free movement of elephants. In Assam, more than 1,150 humans and 370 elephants died as a result of human-elephant conflict between 1980 and 2003. In India alone, over 400 people are killed by elephants every year, and 0.8 to 1 million hectares are damaged, affecting at least 500,000 families across the country. Moreover, elephants are known to destroy crops worth up to US$2–3 million annually. This has major impacts on the welfare and livelihoods of local communities, as well as the future conservation of this species. In countries like Bangladesh and Sri Lanka, the Asian elephant is one of the most feared wild animals, even though they are less deadly than other local animals such as venomous snakes (which were estimated to claim more than 30 times more lives in Sri Lanka than elephants). As a whole, Asian elephants display highly sophisticated and sometimes unpredictable behaviour. Most untamed elephants try to avoid humans, but if they are caught off guard by any perceived physical threat, including humans, they will likely charge. This is especially true of males in musth and of females with young. Gunfire and other similar methods of deterring, which are known to be effective against many kinds of wild animals including tigers, may or may not work with elephants, and can even worsen the situation. Elephants that have been abused by humans in the past often become "rogue elephants", which regularly attack people with no provocation.

Poaching

For ivory

18th century ivory powder flask

The demand for ivory during the 1970s and 1980s, particularly in East Asia, led to rampant poaching and the serious decline of elephants in both Africa and Asia. In Thailand, the illegal trade in live elephants and ivory still flourishes. Although the amount of ivory being openly sold has decreased substantially since 2001, Thailand still has one of the largest and most active black markets for ivory seen anywhere in the world. Tusks from Thai poached elephants also enter the market; between 1992 and 1997 at least 24 male elephants were killed for their tusks.

Up to the early 1990s, Vietnamese ivory craftsmen used exclusively Asian elephant ivory from Vietnam and neighbouring Lao and Cambodia. Before 1990, there were few tourists and the low demand for worked ivory could be supplied by domestic elephants. Economic liberalisation and an increase in tourism raised both local and visitors' demands for worked ivory, which resulted in heavy poaching.

For skin

The skin of the Asian elephant is used as an ingredient in Chinese medicine as well as in the manufacture of ornamental beads. The practice has been aided by China's State Forestry Administration (SFA), which has issued licences for the manufacture and sale of pharmaceutical products containing elephant skin, thereby making trading legal. In 2010, four skinned elephants were found in a forest in Myanmar; 26 elephants were killed by poachers in 2013 and 61 in 2016. According to the NGO Elephant Family, Myanmar is the main source of elephant skin, where a poaching crisis has developed rapidly since 2010.

Handling methods

Young elephants are captured and illegally imported to Thailand from Myanmar for use in the tourism industry; calves are used mainly in amusement parks and are trained to perform various stunts for tourists.

The calves are often subjected to a 'breaking in' process, which may involve being tied up, confined, starved, beaten and tortured; as a result, two-thirds may perish. Handlers use a technique known as the training crush, in which "handlers use sleep-deprivation, hunger, and thirst to "break" the elephants' spirit and make them submissive to their owners"; moreover, handlers drive nails into the elephants' ears and feet.

Conservation

The Asian elephant is listed on CITES Appendix I. It is a quintessential flagship species, deployed to catalyze a range of conservation goals, including:
  • habitat conservation at landscape scales
  • generating public awareness of conservation issues
  • mobilisation as a popular cultural icon both in India and the West.

In captivity

Rhythmic swaying behaviour is not reported in free ranging wild elephants and may be symptomatic of psychological disorders.
 
About half of the global zoo elephant population is kept in European zoos, where they have about half the median life span of conspecifics in protected populations in range countries. This discrepancy is clearest in Asian elephants: infant mortality is twice that seen in Burmese timber camps, and adult survivorship in zoos has not improved significantly in recent years. One risk factor for Asian zoo elephants is being moved between institutions, with early removal from the mother tending to have additional adverse effects. Another risk factor is being born into a zoo rather than being imported from the wild, with poor adult survivorship in zoo-born Asians apparently being conferred prenatally or in early infancy. Likely causes for compromised survivorship is stress and/or obesity.

Demographic analysis of captive Asian elephants in North America indicates that the population is not self-sustaining. First year mortality is nearly 30 per cent, and fecundity is extremely low throughout the prime reproductive years. Data from North American and European regional studbooks from 1962 to 2006 were analysed for deviation of the birth and juvenile death sex ratio. Of 349 captive calves born, 142 died prematurely. They died within one month of birth, major causes being stillbirth and infanticide by either the calf's mother or by one of the exhibition mates. The sex ratio of stillbirths in Europe was found to have a tendency for excess of males.

In culture

A folio from the Hastividyarnava manuscript

Elephants are used for safari tourism throughout Asia
 
Sri Lankan elephants at Esala Perahera
 
At this elephant training camp, captive elephants are taught to handle logs.
 
Bones of Asian elephants excavated at Mohenjo-daro in the Indus Valley indicate that they were tamed in the Indus Valley Civilization and used for work. Decorated elephants are also depicted on seals and were modelled in clay.

The elephant became a siege engine, a mount in war, a status symbol, a beast of burden, and an elevated platform for hunting during historical times in South Asia.

Elephants have been captured from the wild and tamed for use by humans. Their ability to work under instruction makes them particularly useful for carrying heavy objects. They have been used particularly for timber-carrying in jungle areas. Other than their work use, they have been used in war, in ceremonies, and for carriage. It is reported that war elephants are still in use by the Kachin Independence Army (KIA) to take control of Kachin State in northern Myanmar from Myanmar's military. The KIA use about four dozen elephants to carry supplies.

The elephant plays an important part in the culture of the subcontinent and beyond, being featured prominently in the Panchatantra fables and the Buddhist Jataka tales. They play a major role in Hinduism: the god Ganesha's head is that of an elephant, and the "blessings" of a temple elephant are highly valued. Elephants are frequently used in processions where the animals are adorned with festive outfits. 

The elephant is depicted in several Indian manuscripts and treatises. Notable amongst these is the Matanga Lila (elephant sport) of Nilakantha. The manuscript Hastividyarnava is from Assam in northeast India. 

In the Burmese, Thai and Sinhalese animal and planetary zodiac, the elephant, both tusked and tuskless, are the fourth and fifth animal zodiacs of the Burmese, the fourth animal zodiac of the Thai, and the second animal zodiac of the Sinhalese people of Sri Lanka. Similarly, the elephant is the twelfth animal zodiac in the Dai animal zodiac of the Dai people in southern China.

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