Although seagrass canopies are known to enhance particle sedimentation, there is still limited knowledge about how seagrasses modify the vertical distribution of sediment particles; especially when particles come from allochthonous sources. This study determined volume trapped by leaves, amount that remains in suspension both within and above canopy, deposited onto seabed. A set laboratory expe...

A new species of the genus Pristimantis is described from Churi tepui, in the Chimanta massif, Estado Bolivar, Venezuela. The new species was discovered during the Muchimuk Expedition 2009, an ongoing speleological exploration of the Charles Brewer cave system, the largest sandstone cave on Earth. The species is known from only one female, collected near the mouth of the Muchimuk cave, in "non-...

Herds of dugong, a largely tropical marine megaherbivore, are known to undertake long-distance movements, sequentially overgrazing seagrass meadows in their path. Given their drastic declines in many regions, it is unclear whether at lower densities, their grazing is less intense, reducing their need to travel between meadows. We studied the effect of the feeding behaviour of a small dugong pop...

the effect of some ecological factors on the survival of trichophyton violaceum t.mentagrophytes and m. gypseum was studied. three types of sterile soil, weakly alkaline (ph =7.9).neutral (ph=7.1) and acid (ph =5.6), and two conditions of wet and dry environments at different temperatures (-8, +8, + 1s, +3o, i~445 were examined. after 4, 10,15,30,60, and 90 days the survival of these fungi were...

biodiversity plays a crucial role in stability and productivity of natural ecosystem. the main goal of this research was to classify ecological groups in steppe rangeland and investigate their relationships with plant diversity indices. therefore, fifty different land unit tracts (lut) were identified in khod-neuk basin, yazd province, iran, in 2010. vegetation and soil samples were taken in th...