A hybrid zone involving Cnemidophmus tigris punctilinealis (formerly gracilis) and C. tigris marnoratus in southwestern New Mexico and adjacent Arizona is narrow and characterized by abrupt and concordant change in both morphological characters and allele frequencies studied by protein electrophoresis. We compared adult C. tigris sampled from three locations that span the hybrid zone. Body mass...

The literature on transboundary water resources allocation modeling is still short on encompassing and analyzing complex geographic multiparty nature of basins. This study elaborates the Inter Temporal Euphrates and Tigris River Basin Model (ITETRBM), which is a linear programming based transboundary water resources allocation model maximizing net economic benefit from allocation of scarce wate...

Tigris River is a major source to supply water for big part of Iraq. Lately, Iraq has experienced shortage problems such as variability in climate and the building huge dams upstream countries (Turkey Iran). In this work, total dissolved salts (T.D.S.) were measured at fourteen sites on two periods year 2014. The first period consisted six rainy-months (April–September) second covered non-rainy...