Dry forests represent a biome that occurs in the tropics and sub-tropics, consisting of a chiefly deciduous tree mix. The climate consists of not only of less rainfall than most other forest types, but contains a long dry season. Endemism is often high, not only of plant species, but also vertebrates.
Gulf of California xeric scrubLast Updated on 2013-12-04 16:26:07
The Gulf of California xeric scrub ecoregion is situated along the eastern coastal zone and Gulf of California versanta region of land sloping in one general direction of the Baja Peninsula in Mexico, and is delineated by the spine of the La Giganta Sierra Mountains. This ecoregion, located entirely within the nation of Mexico, is classified within the Deserts and Xeric Scrublands biome. Species richness of plants is high in the ecoregion, but modest for fauna; however, endemism is high in this arid habitat, which receives some of the lowest precipitation in all of Mexico.
There are a total of 341 vertebrate species present in the ecoregion. Twenty genera of plants, nine species of the herpetofauna, twelve species of mammal, and two species of avifauna are endemic to this region. Reptilian endemism is particularly notable, with some lizard taxa of highly restricted occurrence... More »
Sierra de la Laguna dry forestsLast Updated on 2013-12-03 15:31:09
Located at the southern end of the Baja California Peninsula in Mexico, the Sierra de la Laguna dry forests ecoregion was once an isolated island, containing a large number of endemic species. After sufficient mountain uplift and the joining the Baja Peninsula mainland, this ecoregion underwent significant speciation, and is thus today high in species diversity; this portion of the peninsula contains the majority of the species found in the southern part of the Baja Peninsula. The Sierra de la Laguna dry forest is a subtropical dry forest classified within the Tropical and Subtropical Broadleaf Forests biome; the ecoregion is threatened by overgrazing from domestic cattle and the hunting by humans. Designated as a Protected Natural Area (PNA), this important ecoregion is at risk from habitat fragmentation.
This ecoregion is contained in a larger geographic unit known as the Cape... More »
San Lucan xeric scrubLast Updated on 2013-12-01 20:04:08
The San Lucan xeric scrub is situated at the southern-most part of the Baja Peninsula of Mexico; this diverse landscape of mountains, valleys, and plateaus is covered with a variety of species of xericArid land receiving less than 25 centimeters of rainfall annually vegetation. This neotropical ecoregion is classifed within the Deserts and Xeric Scrublands biome. Plants and animals of this region evolved independently before the Baja Peninsula, a previous island during the Miocene, joined the mainland. An arid climate supports a number fauna and species, about ten percent of which are endemic. This region supports a number of endemic birds and is listed as an Endemic Bird Area (EBA). Established as a Protected Natural Area (PNA), much of the ecoregion remains intactThe condition of an ecological habitat being an undisturbed or natural environment.
This ecoregion is contained in a... More »
Sonoran-Sinaloan transition subtropical dry forestLast Updated on 2013-11-24 19:52:19
The Sonoran-Sinaloan transition subtropical dry forest ecoregion comprises a distinct zone of dry forest that forms a north-south transition between the Sonoran Desert to the north and the Sinaloan dry forests to the south. The Sonoran-Sinaloan transition subtropical dry forest ecoregion shares elements of climate, as well as soil and topographic attributes, with both neighbouring ecoregions. The subject ecoregion also comprises part of a much broader ecological unit: the Tropical and Subtropical Dry Broadleaf Forests biome. The southeastern ecoregion boundary marks the end of the Nearctic and the beginning of the Neotropical biogeographic realm.
Nonetheless, the Sonoran-Sinaloan transition subtropical dry forest manifests an interesting mixture of temperate and tropical biota, many species of which find either their northern or southern limits here. There is a generally low... More »
Southern Pacific dry forestsLast Updated on 2013-11-23 13:16:48The Southern Pacific dry forests ecoregion is situated along the southeastern versant of the Sierra Madre del Sur Mountains including the Pacific Ocean coastal plain. These forests are a key locus of endemism for butterflies, and has the greatest diversity of scorpions and spiders in the entirety of Mexico. This ecoregion is classified in the Tropical and Subtropical Dry Broadleaf Forests biome. The Southern Pacific dry forests exhibit a moderate to high faunal species richness; for example, there are a total of 744 vertebrate taxa recorded in the ecoregion, with a particularly large number of endemic reptiles.
However, little of the original habitat is extant, since agriculture development for fruit and coffee plantations has occurred on a broad scale. Also, overgrazing by sheep has severely degraded vegetation and produced widespread soil erosion.
The Southern Pacific dry... More »
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