DODSON, STANLEY Predicting crustacean zooplankton species
... Methods of selecting lakes and defining species lists are similar to those of Dodson (199 1). Specieslists for each lake include all pelagic crustaceans, even rare species. The following is a brief description of the criteria used for choosing species; more complete information, including a justific ...
... Methods of selecting lakes and defining species lists are similar to those of Dodson (199 1). Specieslists for each lake include all pelagic crustaceans, even rare species. The following is a brief description of the criteria used for choosing species; more complete information, including a justific ...
PCA – A Powerful Method for Analyze Ecological Niches
... organism’s physical environment as well as to other organisms, originally, within a community. Since the community concept is in the course of radical change (Ricklefs 2008), it is convenient to replace the term community with a more general one, an assemblage. In practice, habitat and the function ...
... organism’s physical environment as well as to other organisms, originally, within a community. Since the community concept is in the course of radical change (Ricklefs 2008), it is convenient to replace the term community with a more general one, an assemblage. In practice, habitat and the function ...
Spatial Variability Enhances Species Fitness in
... respect to even rather drastic changes of the detailed microscopic interaction rules [20,22]. Yet to render these models more realistic and relevant for biological systems, one must obviously allow for different fitness of the individuals as well as spatial variations in the rates that describe the ...
... respect to even rather drastic changes of the detailed microscopic interaction rules [20,22]. Yet to render these models more realistic and relevant for biological systems, one must obviously allow for different fitness of the individuals as well as spatial variations in the rates that describe the ...
- Wiley Online Library
... periods at different temporal scales (i.e. daily, seasonal, interannual). Mismatch of phenology has been widely called to explain undetected interactions that are not possible to occur (i.e. forbidden interactions; Olesen et al. 2011; Encinas-Viso, Revilla & Etienne 2012; Olito & Fox 2015), that is s ...
... periods at different temporal scales (i.e. daily, seasonal, interannual). Mismatch of phenology has been widely called to explain undetected interactions that are not possible to occur (i.e. forbidden interactions; Olesen et al. 2011; Encinas-Viso, Revilla & Etienne 2012; Olito & Fox 2015), that is s ...
Conservation Assessment for the Red-Tailed Chipmunk
... chipmunks in Washington. Therefore, I draw on accounts of the species from its entire range. There is no information regarding differences in ecology between the two subspecies. This work should not be considered complete, as unpublished reports of occurrence or ecological information are very likel ...
... chipmunks in Washington. Therefore, I draw on accounts of the species from its entire range. There is no information regarding differences in ecology between the two subspecies. This work should not be considered complete, as unpublished reports of occurrence or ecological information are very likel ...
Oecologia (1992) 92:58-64 ?-;- Oecologia ? Springer-Verlag 1992
... in these Anolis is not a trivial special case in ecology because anoles have served as important models in studies on competition and resource partitioning (Schoener 1968). Most studies on parasite alteration of interspecific interactions center on epidemic disease with lethal effects on the host. T ...
... in these Anolis is not a trivial special case in ecology because anoles have served as important models in studies on competition and resource partitioning (Schoener 1968). Most studies on parasite alteration of interspecific interactions center on epidemic disease with lethal effects on the host. T ...
Sink habitats can alter ecological outcomes for competing species
... and competed for breeding sites (Fig. 1). After the census, individuals from species i with i = 1, 2 occupying higher-quality breeding sites produce on average βi progeny while individuals occupying lower-quality breeding sites produce on average 2i progeny. By lowerquality, we mean βi > 2i for i = ...
... and competed for breeding sites (Fig. 1). After the census, individuals from species i with i = 1, 2 occupying higher-quality breeding sites produce on average βi progeny while individuals occupying lower-quality breeding sites produce on average 2i progeny. By lowerquality, we mean βi > 2i for i = ...
A complex adaptive systems approach
... no complementarity, and for any given environmental condition there exists only one single optimal value of the trait (for example the lowest resource level that sustains positive growth, i.e., zero net growth isoclines) such that species with this trait would come to dominate the community in a sta ...
... no complementarity, and for any given environmental condition there exists only one single optimal value of the trait (for example the lowest resource level that sustains positive growth, i.e., zero net growth isoclines) such that species with this trait would come to dominate the community in a sta ...
Chapter 14: Conserving Biodiversity
... 14.1 The Sixth Extinction Habitat destruction not limited to rainforests Freshwater lakes and streams, grasslands, and temperate forests are also threatened If worldwide habitat destruction continues at present rate, as many as 25% of all world’s species could become extinct in 50 years ...
... 14.1 The Sixth Extinction Habitat destruction not limited to rainforests Freshwater lakes and streams, grasslands, and temperate forests are also threatened If worldwide habitat destruction continues at present rate, as many as 25% of all world’s species could become extinct in 50 years ...
Impact of maximum sustainable yield on competitive community
... When r1 ¼r2, K1 ¼K2 and a ¼ b, the TMSY exists and it is the global maximum (Fig. 1a and b). As the competition coefficients increase, the area of species coexistence narrows and the TMSY value decreases toward the MSY of one population. In the next example (Fig. 2) we investigate how TMSY affects po ...
... When r1 ¼r2, K1 ¼K2 and a ¼ b, the TMSY exists and it is the global maximum (Fig. 1a and b). As the competition coefficients increase, the area of species coexistence narrows and the TMSY value decreases toward the MSY of one population. In the next example (Fig. 2) we investigate how TMSY affects po ...
Edge effect on carabid assemblages along forest
... clear on Fig. 2; it usually represents linear gradients (Gauch 1986). Instead of the almost continuous variation of the composition of the assemblage along the gradient, carabid samples of the grass, the forest edge and the forest interior are separated from each other. The composition of the sample ...
... clear on Fig. 2; it usually represents linear gradients (Gauch 1986). Instead of the almost continuous variation of the composition of the assemblage along the gradient, carabid samples of the grass, the forest edge and the forest interior are separated from each other. The composition of the sample ...
- The University of Liverpool Repository
... Not all of these configurations will be equally feasible (see Glossary) or dynamically stable, such ...
... Not all of these configurations will be equally feasible (see Glossary) or dynamically stable, such ...
2002 Benthic Ecology Meeting, Tallahassee, Florida
... ecosystems, reduction of biodiversity, and decline of commercially important species. The question of how disturbance affects invasibility has been examined through theoretical and correlative terrestrial studies. While theory repeatedly predicts that increased disturbance leads to increased invader ...
... ecosystems, reduction of biodiversity, and decline of commercially important species. The question of how disturbance affects invasibility has been examined through theoretical and correlative terrestrial studies. While theory repeatedly predicts that increased disturbance leads to increased invader ...
Bateman et al 2013 dispersal scenarios in print
... Huntley et al., 2010). Present-day climate change is already having a noticeable impact on the distribution of species climatic niche space (VanDerWal et al., 2013) and species distributions, with latitudinal and altitudinal range shifts increasingly documented (Parmesan & Yohe, 2003; Parmesan, 2006 ...
... Huntley et al., 2010). Present-day climate change is already having a noticeable impact on the distribution of species climatic niche space (VanDerWal et al., 2013) and species distributions, with latitudinal and altitudinal range shifts increasingly documented (Parmesan & Yohe, 2003; Parmesan, 2006 ...
Resource Partitioning among Five Agrobiont Spiders of a Rice
... evidence that interspecific competition may some time be a significant factor in a spider community. The strength of competition is difficult to measure in the field. Several studies reported that niche overlap indicates current competition in species and also indicates whether competition was prese ...
... evidence that interspecific competition may some time be a significant factor in a spider community. The strength of competition is difficult to measure in the field. Several studies reported that niche overlap indicates current competition in species and also indicates whether competition was prese ...
Climate modifies response of non
... response was mainly driven by an extreme response to N enrichment at a few sites. Why this was the case is unclear, but local climate conditions may have played a role in determining the effect of eutrophication on non-native abundance. Taken together, these studies demonstrate that the effect of nu ...
... response was mainly driven by an extreme response to N enrichment at a few sites. Why this was the case is unclear, but local climate conditions may have played a role in determining the effect of eutrophication on non-native abundance. Taken together, these studies demonstrate that the effect of nu ...
Food Web Network Structure
... Pros: Allows assessment of details of how/why structure differs Cons: Properties are not independent, making overall evaluation problematic ...
... Pros: Allows assessment of details of how/why structure differs Cons: Properties are not independent, making overall evaluation problematic ...
Invasional meltdown 6 years later: important
... contribute to it. The helping species could be unaffected or could be harmed, but insignificantly, while the recipient of the aid is greatly helped, so the net effect is increased invasion. Stronger would be mutual facilitation, in which each species aids the other. This is still a population proces ...
... contribute to it. The helping species could be unaffected or could be harmed, but insignificantly, while the recipient of the aid is greatly helped, so the net effect is increased invasion. Stronger would be mutual facilitation, in which each species aids the other. This is still a population proces ...
Food webs in space: On the interplay of dynamic instability and
... should tend to be shorter in sparser habitats, and also shorter if the basal resource species itself has high extinction or low colonization rates (Holt 1997a). Even in widespread habitats, given local extinctions and constraints on colonization rates, food chain length may be constrained by spatial ...
... should tend to be shorter in sparser habitats, and also shorter if the basal resource species itself has high extinction or low colonization rates (Holt 1997a). Even in widespread habitats, given local extinctions and constraints on colonization rates, food chain length may be constrained by spatial ...
Marine habitats: fauna and ecology
... adoption of these criteria would have Large colony of the hydroid Eudendrium sp. the explicit aim of improving the management of marine habitats by means of a system that could easily be adopted even by non-specialists. Simplification of the classification of marine habitats would represent an attem ...
... adoption of these criteria would have Large colony of the hydroid Eudendrium sp. the explicit aim of improving the management of marine habitats by means of a system that could easily be adopted even by non-specialists. Simplification of the classification of marine habitats would represent an attem ...
species interactions - University of Toronto Mississauga
... interaction is detrimental to one species but negligible to the other, an interaction called amensalism. Predation, herbivory, and parasitism all have a positive effect on one population and a negative effect on the other (/). However, while predators always kill their prey, the hosts of parasites ...
... interaction is detrimental to one species but negligible to the other, an interaction called amensalism. Predation, herbivory, and parasitism all have a positive effect on one population and a negative effect on the other (/). However, while predators always kill their prey, the hosts of parasites ...
The effect of habitat heterogeneity on species diversity patterns: a
... logical processes at different scales. Hence, the distribution of species and communities at a given scale depends on the overall processes operating at this scale, and these depend on the habitat heterogeneity (the patchiness of different habitats with different sizes) at this scale. Biological het ...
... logical processes at different scales. Hence, the distribution of species and communities at a given scale depends on the overall processes operating at this scale, and these depend on the habitat heterogeneity (the patchiness of different habitats with different sizes) at this scale. Biological het ...
Phylogenetic limiting similarity and competitive exclusion
... In The Origin of Species, Darwin (1859) proposed one of the earliest hypotheses on competition, stating that the struggle for existence is greater between closely related species than between distantly related species. This idea, which we term the phylogenetic limiting similarity hypothesis, is base ...
... In The Origin of Species, Darwin (1859) proposed one of the earliest hypotheses on competition, stating that the struggle for existence is greater between closely related species than between distantly related species. This idea, which we term the phylogenetic limiting similarity hypothesis, is base ...
Density-dependence in common tree species in a tropical dry forest
... Pacala 1989; Roughgarden 1989 for reviews). The density of any species is, of course, ultimately limited by the self-thinning densities obtained in monospecific stands by direct competition for resources (Yoda et al. 1963). However, tree species seldom attain such high densities in mixed-species com ...
... Pacala 1989; Roughgarden 1989 for reviews). The density of any species is, of course, ultimately limited by the self-thinning densities obtained in monospecific stands by direct competition for resources (Yoda et al. 1963). However, tree species seldom attain such high densities in mixed-species com ...