نتایج جستجو برای: mesotrophic
تعداد نتایج: 500 فیلتر نتایج به سال:
benthic foraminiferal assemblages from maastrichtian strata, gansserina gansseri-abathamphalus mayaroensis planktonic foraminiferal zone, of the abtalkh formation at aitamir section (west of the kopeh-dagh basin) were investigated in order to evaluate the palaeoenvironmental changes (organic matter flux and bottom-water oxygenation). maastrichtian faunal assemblages are well preserved and diver...
[GAEDKE, U. & BARTHELMESS, T. & STRAlLE, D. (1996): Temporal variability of standing stocks of individual species, communities, and the entire plankton in two lakes of different trophic state: empirical evidence for hierarchy theory and emergent properties? Senckenbergiana marit. 27 (3/6): 169-177,2 figs., 3 tabs.; Frankfurt a. M.] Hierarchy theory claims that the structure and function of ecos...
Analyses of carbon stable isotopes are often used to estimate the contributions of allochthonous and autochthonous dietary resources to aquatic consumers. Most pelagic food web studies assume that all phytoplankton taxa have a similar δ13C value. We studied pelagic food web compartments (dissolved inorganic carbon [DIC], phytoplankton, bacteria, seston, cladoceran zooplankton) in 12 small (< 0....
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید