The results demonstrate that in this intertidal community, nutrient limitation can occur under conditions of nutrient stress, that top-down grazing effects are typically stronger than bottom-up nutrient effects, and that prey-dependent…
Publications Authored by Zhu Kai At the population-level, biologists often interpret negative D M relationships as evidence of density-dependent survival or as models of ecosystem carrying capacity (i.e., the ‘self-thinning rule’)4,5. The Causes of Species Richness Patterns Across Space, Time, And Clades And - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Grazing extensification and intensification are among the main problems affecting European grasslands. We analyze the impact of grazing intensity (low and moderate) and the use of veterinary medical products (VMPs) on the dung beetle… Arthropod community structure (based upon 18 response variables) diverged over time between Supplemented and Ambient treatments, with no effect of Fencing on the multivariate response pattern. That biodiversity declines with latitude is well known, but whether a metacommunity process is behind this gradient has received limited attention. We tested the hypothesis that dispersal limitation is progressively replaced by mass effects… The results demonstrate that in this intertidal community, nutrient limitation can occur under conditions of nutrient stress, that top-down grazing effects are typically stronger than bottom-up nutrient effects, and that prey-dependent…
Carnivores can affect the impact that herbivores have on plants in two ways (4). They may cause changes in herbivore density through direct consumption of herbivores. C4 plants use the C4 carbon fixation pathway to increase their photosynthetic efficiency by reducing or suppressing photorespiration, which mainly occurs under low atmospheric CO 2 concentration, high light, high temperature, drought, and… The use of more than 100 song playback experiments reveals that birds give stronger responses to songs of closely related species in the Amazon than in temperate North America, suggesting that speciation is currently happening more slowly… Ecology Letters 8: Foster, B. L., V. H. Smith, T. L. Dickson, and T. Hildebrand Invasibility and compositional stability in a grassland community: relationships to diversity and extrinsic factors. Vegetation response to nutrient addition can vary across space, yet studies that explicitly incorporate spatial pattern into experimental approaches are rare. To explore whether there are unique spatial scales (grains) at which grass…
1 Univerzita Karlova v Praze Přírodovědecká fakulta Katedra ekologie Faktory ovlivňující rychlost speciace a diverzifika These scale-dependent processes are especially important when they affect key members of a community, such as ecosystem engineers that create shelter and food resources for other species. Frontiers in Ecology, Evolution and Complexity - Free ebook download as PDF File (.pdf), Text File (.txt) or read book online for free. Right now, the understanding of life on Earth, its origins and dynamics, is going trough a deep… It is a rare example of a chain migration community surviving from the Great Migration. This narrow entity is today designated as the Rapp Road Community Historic District, listed on both the state and the National Register of Historic… b Luebert, Federico; Cecchi, Lorenzo; Frohlich, Michael W.; Gottschling, Marc; Guilliams, C. Matt; Hasenstab-Lehman, Kristen E.; Hilger, Hartmut H.; Miller, James S.; Mittelbach, Moritz (2016-06-24). "Familial classification of the… These results not only affect our understanding of the ecology of food webs, but also have implications for how they respond to environmental change, as well as for ecosystem management and restoration. For centuries, biologists have studied patterns of plant and animal diversity at continental scales. Until recently, similar studies were impossible for microorganisms, arguably the most diverse and abundant group of organisms on Earth.
Phylogenetics and phylogeography of versity gradient: speciation, extinction and biogeography. the Artibeus jamaicensis complex based on cytochrome-b Ecology Letters 10:315–331.
It is a rare example of a chain migration community surviving from the Great Migration. This narrow entity is today designated as the Rapp Road Community Historic District, listed on both the state and the National Register of Historic… b Luebert, Federico; Cecchi, Lorenzo; Frohlich, Michael W.; Gottschling, Marc; Guilliams, C. Matt; Hasenstab-Lehman, Kristen E.; Hilger, Hartmut H.; Miller, James S.; Mittelbach, Moritz (2016-06-24). "Familial classification of the… These results not only affect our understanding of the ecology of food webs, but also have implications for how they respond to environmental change, as well as for ecosystem management and restoration. For centuries, biologists have studied patterns of plant and animal diversity at continental scales. Until recently, similar studies were impossible for microorganisms, arguably the most diverse and abundant group of organisms on Earth. Lepomis macrochirus, commonly known as bluegill, is a freshwater teleost belonging to the sunfish family (Centrarchidae). It has been introduced Shrimp spend most of their time on the bottom, where attacks are more often successful. Avoidance of the bottom microhabitat by tadpoles therefore improves survival.