搜索结果: 1-6 共查到“海洋科学 top-down control”相关记录6条 . 查询时间(0.095 秒)
No empirical evidence for community-wide top-down control of prey fish density and size by fish predators in lakes
No empirical evidence community-wide top-down control prey fish density size by fish predators in lakes
2014/4/16
I tested relationships between fish predator and prey densities or size across 66 lakes of the European temperate zone, covering mean depths between 1 and 22 m and a phytoplankton biomass range betwee...
Microzooplankton grazing in the coastal Gulf of Alaska: Variations in top-down control of phytoplankton
Microzooplankton grazing coastal Gulf of Alaska Variations top-down contro phytoplankton
2014/4/22
Microzooplankton grazing rates on three phytoplankton size fractions (<5, 5-20, and >20 μm) were measured during spring and summer 2001 in the northern coastal Gulf of Alaska (CGOA). To a first approx...
Top-down control from the bottom: Regulation of eutrophication in a large river by benthic grazing
Regulation of eutrophication benthic grazing
2014/4/30
We use a 15-yr record from a 100-km stretch of the tidal, freshwater Hudson River to examine the controls of
phytoplankton biomass. Across years, seasonal mean chlorophyll a (Chl a) and maximum Chl a...
Selective predators and their parasitized prey: Are epidemics in zooplankton under top-down control?
Selective predators parasitized prey epidemics in zooplankton top-down control
2014/5/9
Seasonal change in the intensity of fish predation affects succession in lake zooplankton communities. Predation affects not only the zooplankton prey, but also their parasites. Because the ability of...
Top-down control of phytoplankton biomass and community structure in the monsoonal Arabian Sea
Top-down control phytoplankton biomass community structure monsoonal Arabian Sea
2014/5/26
During the 1995 monsoons, phytoplankton biomass was low over large areas of the Arabian Sea in spite of often high concentrations of inorganic nutrients, characteristics typical of high-nutrient, lowc...
Strong bottom-up and top-down control of early life stages of macroalgae
Strong bottom-up top-down control early life stages macroalgae
2014/6/9
In contrast to most pelagic primary producers, benthic macrophytes pass through morphologically distinct life stages, which can be subject to different ecological controls. Using factorial field exper...