Two keystone refuges would anchor the corridor project: the Laguna Atascosa--a critical stronghold for endangered ocelots on the Gulf Coast--and Santa Ana, some 60 miles west on the Rio Grande, which protects the largest remaining riparian thorn forest
in the United States.
Diverse habitats vary from everlasting glaciers to dry alpine and cold deserts, alpine scrub/moist alpine, Himalayan dry coniferous, Himalayan moist temperate forest, sub-tropical pine forest, subtropical dry mixed deciduous scrub forest, Balochistan juniper/pistachio scrub forest, dry sub-tropical and temperate semi-evergreen forest, tropical thorn forest
, sand dune desert and mangrove/littoral (Zaman, 2008).
The Western Ghats of southern India are characterised by altitudinal and precipitation gradients within relatively short distances in the order of tens of kilometres, giving rise to diverse vegetation types from tropical dry thorn forest
at the driest ends of the gradient through tropical dry and moist deciduous forests to tropical semi-evergreen and evergreen forests in the wettest regions, and tropical montane stunted forest and grassland at high elevations (Pascal 1988; Ganesh et al.
It has mixture of sub-tropical semi-evergreen and tropical thorn forest
and has wetlands, torrents, farm lands and hills, due to which good diversity of wild animals exist here (Chaudhry et al.
Sub-tropical Dry Evergreen Forests:These are the scrub forest of small-leaved evergreen trees and shrubs including thorny species; the latter becomes more prevalent on hot dry exposures and form a transition to northern thorn forest
. This is the smallest group of Champion and Seth (1968) classification currently accounting for only 0.03% of the total forest cover of the country.
The refuge is mainly thorn forest
, riparian forest, and open wetlands (Carter, 1986), with surrounding agricultural land mainly in sorghum, cotton, and winter vegetables.
The route itself is a mix of dry and wet deciduous and montane rainforest, with habitat ranging from scrub and thorn forest
Among nine primary vegetation types of Pakistan, the lowest temperature increase was 0.24C over Riverain forest while the highest was 2.25C in dry tropical Thorn forest
(Chhhor Sindh) during 1961-2000.
Savannas: At subtropical latitudes, there is some seasonality, 80 to 160 cm annual precipitation, perennial grasslands with scattered deciduous trees, maintained by periodic burning; the driest savanna areas are called thorn forest
After 2004, WNV activity was detected in all 5 sampling locations and in a variety of ecosystems: Cordoba, periurban thorn forest
(1.1%, 6/543); Mar Chiquita, thorn forest
(5.1%, 16/313); Monte Alto, semi-dry chaco forest (9.8%, 8/82); Montecristo, cropland (9.5%, 2/21) and San Miguel de Tucuman, periurban yungas foothills (4.9%, 12/227).
Other landscape elements, including pastureland, cultivated fields, and thorn forest
(mainly Acacia spp.), are often interspersed with the more abundant TDF.
(in which the small-leaved thorny shrub Acacia tortuosa (L.)Willd.