Top-down effects of an odonate dominate population, community and ecosystem processes in bromeliadsPredation is ubiquitous in natural systems, but there has been longstanding debate within ecology as to its importance to trophic levels other than the immediate prey, and to rates of nutrient and ...
Amidst growing evidence that predators influence plant-pollinator interactions, I suggest that such pollinator-mediated indirect effects may be a common feature of terrestrial communities, with implications for research into top-down effects and pollination ecology. Experimental evidence of such an effect ...
By deriving the frequency response of populations in different trophic communities, we extend the topヾown and bottom┞猠ories of ecology to include how temporal fluctuations in potential primary productivity percolate up the food chain and are re〆xpressed as population variability. Moreover, by ...
The ecology and evolution of top-down and bottom-up control in mountain lakes(高山湖泊自上而下和自下而上控制的生态学及其演变).pdf 2020-03-19上传 The ecology and evolution of top-down and bottom-up control in mountain lakes(高山湖泊自上而下和自下而上控制的生态学及其演变) ...
Bottom-up and top-down effects of species loss on ecosystem functioning in bromeliad food webs 来自 ResearchGate 喜欢 0 阅读量: 57 作者:JS Petermann,DS Srivastava 摘要: Background/Question/Methods We are losing species at a fast rate worldwide, while continuing to be ignorant about the full ...
Trophic interactions in the pelagic area of lakes and the opposing effects of fish feeding (top-down) and phytoplankton biomass (bottom-up) on zooplankton
Top-down control and elasticity analysis was conducted on isolated from the midgut of the () to assess how temperature affects in a eurythermic ectotherm. consumption and protonmotive force (measured as potential in the presence of ) were monitored at 15, 25, and 35 degrees C. State 4 res...
However, there was no effect of the consumer experimental treatments on annual plant community temporal stability. 4 Synthesis. The loss of consumers from an ecosystem need not necessarily destabilize the producer community, even when loss of consumers results in reduced producer richness and diversity...
Predator-exclusion experiments in five marsh creeks revealed that sea otters suppress the abundance of burrowing crabs, a top-down effect that cascades to both increase marsh edge strength and reduce marsh erosion. Multi-creek surveys comparing marsh creeks pre- and post-sea otter colonization ...
This effect is most pronounced for short latency saccades and is therefore believed to be reflexive and fully based on bottom-up information. For longer latencies this effect has been known to be modulated by top-down information. In the current study, we established the time course in which ...