Variation in monthly values of dry tissue mass (DTM) and two different types of condition indices of the bivalve Egeria radiata (Lamarck, 1804) was studied for 32 consecutive months. To quantify the seasonal trajectory of variation these data were fitted to oneand two-compartment sinusoidal models; and also to a quadratic, cubic and quartic models. The cyclic events in the variation of the T)TM...

Biological long-term data series in marine habitats are often used to identify anthropogenic impacts on the environment or climate induced regime shifts. However, particularly in transitional waters, environmental properties like water mass dynamics, salinity variability and the occurrence of oxygen minima not necessarily caused by either human activities or climate change can attenuate or mask...

Newly reclaimed areas cover several patches over different regions of Egypt, which have different specific characteristics related to climate, soils, hydrology, etc... . The mechanical farm, which extends over 10,000 feddans fares from south of Alexandria by 62 Km, could be considered one of the most important reclaimed areas at West of Nubaria affected by degradation due to water logging. The ...

Massive anthropogenic changes in estuarine salinities, from manipulations of freshwater flows, are again occurring through governmental projects ‘‘correcting’’ past freshwater alterations. The downstream effects of increased freshwater on seagrass meadows, a major fisheries and ecosystem habitat, are not clear. Spectral responses to low salinities were quantitatively delimited for the important...

Changes in microbial characteristics in soils with increasing salinity were measured in 30 soil samples belonging to Kattikhel and Dargai soil series occuring in Khyber Pakhtunkhwa of North West Pakistan during 2009. Microbial characteristics including microbial biomass C, microbial biomass N, C/N ratio in microbial biomass, N mineralization, nitrification, rate of CO2 evolution and cumulative ...

Effects of salinity on growth and physiological indices of Kosteletzkya virginica seedlings were studied. Plant height, fresh weight (FW), dry weight (DW), and net photosynthetic rate (Pn) increased at 100 mM NaCl and slightly declined at 200 mM, but higher salinity induced a significant reduction. Chlorophyll content, stomatal conductance (Gs), intercellular CO2 concentration (Ci), and transpi...