Specimens of Ruppia from all eleven Nebraska counties in which it is known fall into two groups: R. occidentalis in alkaline Sandhills waters and R. maritima in saline waters of the Platte River Valley and Lancaster County. Ruppia occidentalis is distinguished by its more robust size; redspotted leaves and stems; terete, entire, obtuse leaves; 4-8(9) carpels; and by two elliptic white spots on ...

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 ...

Nebraska Public Power District (NPPD) began monitoring aquatic-macrophyte production in Lake Ogallala, Nebraska, in 1989 because the lake provides cooling water for a coal-fired electricity generating facility-Gerald Gentleman Station (GGS). Large mats of macrophytes in the cooling water caused several trips of the generating units at GGS, at considerable cost to NPPD. The plants also support m...

Eighty-six important findings of 54 species vascular plants, bryophytes, lichens and fungi acquired lately from the Murmansk Region are reported. The were defined as if they red-listed in Russia and/or Region, new for protected areas, represented other particularly rare known not more than five locations well northernmost localities Europe or globally. Three fungal (Phaeolus schweinitzii, Phell...

Conserving and restoring submerged aquatic vegetation (SAV) are keymanagement goals for estuaries worldwide because SAV integrates many aspects of water quality and provides a wide range of ecosystem services. Management strategies are typically focused on aggregated abundance of several SAV species, because species cannot be easily distinguished in remotely sensed data. Human land use and shor...