Smooth cordgrass (Spartina alterniflora), a tall grass native to the east coast, has invaded Willapa Bay, Washington, and the San Francisco Bay, California. Management with glyphosate and imazapyr can be effective, but in the San Francisco populations, applications in several sites are confined to short periods in the fall in order to protect nesting habitats of Clapper rails (Rallus longirostr...

In this study, the relationship among four species of Polygonum (including P. hyrcanicum (three samples), P. persicaria, P. avicular, and P. hydropiper) was investigated by GC profiling. Furthermore, the major compounds of the ethylic ether extract of P. hyrcanicum were identified by GC/MS as: α-bisabolol (17.5%), cedrol (15.9%), sesquisabinene hydra...

Recent studies on grasslands demonstrate that species losses and subsequent changes in diversity can decrease the resilience (recovery ability) of ecosystems after a disturbance and can alter ecosystem functioning (e.g., productivity). These studies also explain that responses of ecosystems to enUtah State University; Department of Fisheries and Wildlife and The Ecology Center, 5210 Old Main Hi...

This study reports data on arsenic speciation in two green algae species (Cladophora sp. and Chara sp.) and in five aquatic plants (Azolla sp., Myriophyllum aquaticum, Phylloscirpus cf. desserticola, Potamogeton pectinatus, Ruppia filifolia and Zannichellia palustris) from the Loa River Basin in the Atacama Desert (northern Chile). Arsenic content was measured by Mass spectrometry coupled with ...

[1] The Kimmeridge Clay Formation (KCF) and its equivalents worldwide represent one of the most prolonged periods of organic carbon accumulation of theMesozoic. In this study, we use themolybdenum (Mo) stable isotope system in conjunction with a range of trace metal paleoredox proxies to assess how seawater redox varied both locally and globally during the deposition of the KCF. Facies with low...

A study was carried out to assess the food composition of migratory waterfowl in Bet Makwal Kalan, near Head Taunsa Barrage, along River Indus passage. Migratory water birds are thought be important components dispersal total living entity especially seeds due their proclivity for extensive relocations. They might found large numbers muddy sections. plant making migrations. sum 459 gizzard samp...