نتایج جستجو برای: long lake
تعداد نتایج: 813915 فیلتر نتایج به سال:
Sequential extraction of sediments [Psenner R, Pucsko R. Die Fraktionierung organischer und anorganischer Phosphorverbindungen von Sedimenten. Arch Hydrobiol/Suppl 1988. 70(1): 111-155.] from short, (210)Pb-dated cores from three lakes in Maine USA demonstrates that sediment P is dominantly associated with the NaOH-extractable fraction (P-NaOH(25)) and less with the bicarbonate-dithionite extra...
artemia, a small crustacean, with high commercial value is a valuable model organism for researchers. this creature by tolerating extreme range of different environmental conditions is dispersed to more than 600 and 18 sites over the world and iran, respectively. tashk lake is one the natural parthenogenetic artemia habitat in iran. due to occurrence of an unknown bisexual artemia in tashk lake...
Lake Sonachi, Kenya, is a small alkaline-saline crater lake that over the past 175 years has experienced considerable fluctuations in lake depth (Zmax 5 3–18 m) and an alternation of meromictic and holomictic episodes lasting from a few years to several decades. Paleolimnological methods were used to reconstruct the long-term dynamics of algal and invertebrate communities in Lake Sonachi in rel...
—We evaluated the long-term trends of the benthic macroinvertebrate community (1980–1999) and biological attributes of lake whitefish Coregonus clupeaformis (1985–1999) in southeastern Lake Michigan. We also determined what food types were important to lake whitefish in an area where the amphipod Diporeia had not yet declined in 1998 and how the diet of lake whitefish changed as Diporeia declin...
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