SjoegrenâsjÃ¶gren (s PRONOUNCED-showâgrin) s is a chronic autoimmune disease in which aâperson s immune system turns against and attacks theâbody s own. Cells Inâsjoegren, sjÃ¶gren s white blood cells-attack moisture, producing glands such as the tear ducts and, salivary glands making it difficult for your body to produce saliva. and tears
CEPF is no longer active in this region. Spanning most of Central America, the Mesoamerica biodiversity hotspot encompasses all subtropical and tropical ecosystems from central Mexico to the Panama Canal. This includes all of Guatemala, Belize, El Salvador, Honduras, Nicaragua and Costa Rica, as well as a third of Mexico and nearly two-thirds of Panama. The hotspot harbors the highest montane forests of Central America, with the most extensive and best-protected cloud forests.
The South American savanna types cerrado sensu stricto and cerrado dense typically have densities of trees similar to or higher than that found in South American tropical forests, with savanna ranging 800â3300 trees/ha and adjacent forests with 800â2000 trees/ha.avanna ecoregions are of several different types: 1  Tropical and subtropical savannas are classified with tropical and subtropical grasslands and shrublands as the tropical and subtropical grasslands, savannas, and shrublands biome.