搜索结果: 1-5 共查到“理学 trophic levels”相关记录5条 . 查询时间(0.091 秒)
Severe droughts reduce estuarine primary productivity with cascading effects on higher trophic levels
higher trophic levels Severe droughts reduce estuarine
2014/4/4
Using a 10-yr time-series data set, we analyzed the effects of two severe droughts on water-quality and
ecosystem processes in a temperate, eutrophic estuary (Neuse River Estuary, North Carolina). Du...
Isotopic niches and trophic levels of myctophid fishes and their predators in the Southern Ocean
Isotopic niches trophic levels myctophid fishes their predators in the Southern Ocean
2014/4/16
We report the trophic structure of a myctophid assemblage by measuring theisotopic niches of 14 species living in Kerguelen waters, southern Indian Ocean. Most of the species show distinct isotopic ni...
Similar patterns of patterns of community organization characterize distinct groups of different trophic levels in the plankton of the NW Mediterranean Sea
Similar patterns community organization distinct groups trophic levels
2010/1/19
Planktonic populations were sampled over a 4 week period in the NW Mediterranean, at a site subject to little vertical advection during the Dynaproc 2 cruise in 2004. The characteristics of the phytop...
Essential fatty acids in the planktonic food web and their ecological role for higher trophic levels
the planktonic food web Essential fatty acids
2014/5/19
We measured concentrations of essential fatty acids (EFAs) in four size categories of planktonic organisms—
seston (10–64 mm), microzooplankton (100–200 mm), mesozooplankton (200–500 mm), and macrozo...
Interpreting stable isotopes in food webs: Recognizing the role of time averaging at different trophic levels
stable isotopes food webs averaging at different trophic levels
2014/5/26
Lake Tanganyika, East Africa, has a simple pelagic food chain, and trophic relationships have been established previously from gut-content analysis. Instead of expected isotopic enrichment from phytop...