Bacterial colonization and extinction on marine aggregates
... depends on aggregate size and background bacterial density. This deterministic model has been found to describe well the abundance and dynamics of the entire community on the aggregate in terms of density-dependent growth rates, detachment and permanent attachment, and predation from higher trophic ...
... depends on aggregate size and background bacterial density. This deterministic model has been found to describe well the abundance and dynamics of the entire community on the aggregate in terms of density-dependent growth rates, detachment and permanent attachment, and predation from higher trophic ...
Structure and Stability of Ecological Networks resource use
... ecological communities and hence for predictions concerning their dynamics and response to different kinds of disturbances. Paper IV continues the analysis of the highly resolved individual-based empirical data set used in Paper III and investigates patterns and effects of within- and between specie ...
... ecological communities and hence for predictions concerning their dynamics and response to different kinds of disturbances. Paper IV continues the analysis of the highly resolved individual-based empirical data set used in Paper III and investigates patterns and effects of within- and between specie ...
title 1 - City of Gosnells
... to threatening processes, is restricted in area and/or range and/or is only found at a few locations. The ecological community may still be widespread but is believed likely to move into a category of higher threat in the medium to long term future because of existing or impending threatening proces ...
... to threatening processes, is restricted in area and/or range and/or is only found at a few locations. The ecological community may still be widespread but is believed likely to move into a category of higher threat in the medium to long term future because of existing or impending threatening proces ...
Stochastic species distributions are driven by organism size
... suggested to be more strongly regulated by food web interactions (i.e., their energy comes directly from the lower trophic level) than autotrophic organisms that respond more readily to chemical variables (McQueen et al. 1989). We expected the latter results because of zooplankton’s larger size and ...
... suggested to be more strongly regulated by food web interactions (i.e., their energy comes directly from the lower trophic level) than autotrophic organisms that respond more readily to chemical variables (McQueen et al. 1989). We expected the latter results because of zooplankton’s larger size and ...
What does biodiversity actually do? A review for managers and
... function, four show a negative relationship and 18 have equivocal results (Table 1). Given that there is likely to be a publication bias against nonsignificant results, it appears that a positive relationship between biodiversity and ecosystem function may be overstated. Biodiversity-EF studies mimic ...
... function, four show a negative relationship and 18 have equivocal results (Table 1). Given that there is likely to be a publication bias against nonsignificant results, it appears that a positive relationship between biodiversity and ecosystem function may be overstated. Biodiversity-EF studies mimic ...
the role of competition in structuring ant
... competition, which predicted that two species can not occupy the same niche or coexist unless there is some divergence in resource use (Schoener 1982). During this period, many entomologists have reported how insects differ in the niches and habitats, and argued that competition is the cause for suc ...
... competition, which predicted that two species can not occupy the same niche or coexist unless there is some divergence in resource use (Schoener 1982). During this period, many entomologists have reported how insects differ in the niches and habitats, and argued that competition is the cause for suc ...
Development of a subtidal epifaunal community at the island of
... factors, which are of particular importance in the ro&y intertidal. In this rather harsh environment only relatively few species are able to invade and to interact with each other. Perhaps this is the reason why orderly directional processes can be observed more readily there than in the subtidal zo ...
... factors, which are of particular importance in the ro&y intertidal. In this rather harsh environment only relatively few species are able to invade and to interact with each other. Perhaps this is the reason why orderly directional processes can be observed more readily there than in the subtidal zo ...
Hillebrand et al. 2008 Ecology - NCEAS
... In addition to such obvious cases, where the entire function relies on the presence of a dominant species, increasing inequality in the distribution of traits alters the relative importance of intraspecific vs. interspecific interactions, suggesting that competition can be a potential explanation fo ...
... In addition to such obvious cases, where the entire function relies on the presence of a dominant species, increasing inequality in the distribution of traits alters the relative importance of intraspecific vs. interspecific interactions, suggesting that competition can be a potential explanation fo ...
How will biotic interactions influence climate change–induced range
... climatic gradients exist across this large elevation gradient, with cooler temperatures and greater precipitation (primarily snow) at higher elevations (Fig. S1). Dense coniferous forests prevail at lower elevations (reaching elevations of 1500 m), transitioning to subalpine parklands—mixtures of tr ...
... climatic gradients exist across this large elevation gradient, with cooler temperatures and greater precipitation (primarily snow) at higher elevations (Fig. S1). Dense coniferous forests prevail at lower elevations (reaching elevations of 1500 m), transitioning to subalpine parklands—mixtures of tr ...
"Methods of Speciation in Tropical Reef Fish," Rollins
... as opposed to sympatrically and research is currently being conducted to determine how and when similar species have diverged from ancestral populations. In addition, one of the most prevalent issues related to speciation research is to distinguish between changes that have occurred during speciatio ...
... as opposed to sympatrically and research is currently being conducted to determine how and when similar species have diverged from ancestral populations. In addition, one of the most prevalent issues related to speciation research is to distinguish between changes that have occurred during speciatio ...
Opposing intraspecific vs. interspecific diversity effects on
... Exploring potential links between biodiversity and ecosystem functioning (BEF) is a major challenge in contemporary ecology. As a consequence of anthropogenic ecosystem degradation, local species diversity is changing, a process that has the potential to alter ecosystem functions such as nutrient cy ...
... Exploring potential links between biodiversity and ecosystem functioning (BEF) is a major challenge in contemporary ecology. As a consequence of anthropogenic ecosystem degradation, local species diversity is changing, a process that has the potential to alter ecosystem functions such as nutrient cy ...
Native Fauna on Exotic Trees: Phylogenetic
... 600 The American Naturalist of species, and less so by their idiosyncratic interactions with local environments (Price 2003). Plant lineages, however, may evolve differently in different parts of the world; this can be referred to as geographic contingency. Classical examples of contingent evolutio ...
... 600 The American Naturalist of species, and less so by their idiosyncratic interactions with local environments (Price 2003). Plant lineages, however, may evolve differently in different parts of the world; this can be referred to as geographic contingency. Classical examples of contingent evolutio ...
Complex community and evolutionary responses to habitat
... effects (e.g. [18–20]), not the effects of habitat edges per se (but see [9]). Only two studies have examined responses to habitat edges from a community perspective, and both found top-down effects on herbivores. For example, Evans et al. [21] found decreased herbivore consumption near edges, a ...
... effects (e.g. [18–20]), not the effects of habitat edges per se (but see [9]). Only two studies have examined responses to habitat edges from a community perspective, and both found top-down effects on herbivores. For example, Evans et al. [21] found decreased herbivore consumption near edges, a ...
Ant-mediated seed dispersal does not facilitate niche expansion
... ultimately fail at levels that are demonstratively within the plant’s niche optima; further, the decline in dispersal services is correlated with increasing plant aggregation, suggesting that enemy escape also falters at relatively high levels of soil moisture. 5. Synthesis. Facilitated propagule di ...
... ultimately fail at levels that are demonstratively within the plant’s niche optima; further, the decline in dispersal services is correlated with increasing plant aggregation, suggesting that enemy escape also falters at relatively high levels of soil moisture. 5. Synthesis. Facilitated propagule di ...
Fulltext PDF - Indian Academy of Sciences
... as one arbitrarily given, for the sake of convenience, to a set of individuals closely resembling each other... it does not essentially differ from the term variety which is given to less distinct and more fluctuating forms. The term variety, again, in comparison with mere individual differences, is ...
... as one arbitrarily given, for the sake of convenience, to a set of individuals closely resembling each other... it does not essentially differ from the term variety which is given to less distinct and more fluctuating forms. The term variety, again, in comparison with mere individual differences, is ...
Productivity, dispersal and the coexistence of intraguild predators
... A great deal is known about the influence of dispersal on species that interact via competition or predation, but very little is known about the influence of dispersal on species that interact via both competition and predation. Here, I investigate the influence of dispersal on the coexistence and abun ...
... A great deal is known about the influence of dispersal on species that interact via competition or predation, but very little is known about the influence of dispersal on species that interact via both competition and predation. Here, I investigate the influence of dispersal on the coexistence and abun ...
Invasive species and biological invasions
... millions individuals. Attracted by its low price and small size at birth, many consumers bought these red-eared sliders Xavier Le Roux, BiodivERsA Coordinator and CEO as pet, not knowing that they can exceed 1.5 kg within 2-3 years. Many owners consequently released their turtles into the wild, wher ...
... millions individuals. Attracted by its low price and small size at birth, many consumers bought these red-eared sliders Xavier Le Roux, BiodivERsA Coordinator and CEO as pet, not knowing that they can exceed 1.5 kg within 2-3 years. Many owners consequently released their turtles into the wild, wher ...
Comparative ecology of seedling recruitment in an oligotrophic wet
... conditions, characterized by the day when half of the seeds had germinated, was also affected by chilling. Although differences were small in most species, in some species they were highly significant (Fig. 2). However, biological and statistical significance need not always correspond to each other ...
... conditions, characterized by the day when half of the seeds had germinated, was also affected by chilling. Although differences were small in most species, in some species they were highly significant (Fig. 2). However, biological and statistical significance need not always correspond to each other ...
Flora – Nationally Vulnerable species
... Addendum to Submission re Seeking a Balance: Arkaroola threatened species at risk from pro-mining rezoning proposals Joan E Vickers (PhD, Biology), (personal contact details deleted) ...
... Addendum to Submission re Seeking a Balance: Arkaroola threatened species at risk from pro-mining rezoning proposals Joan E Vickers (PhD, Biology), (personal contact details deleted) ...
Moment Approximations of Individual-based Models
... at random in the plane (i.e., if their pattern is not described by a homogeneous Poisson process: see Chapter 5), we refer to the community as having spatial structure. As explained in Boxes 21.2 and 21.3, an individual is represented as a Dirac delta function, and the function pi (x) is the sum of ...
... at random in the plane (i.e., if their pattern is not described by a homogeneous Poisson process: see Chapter 5), we refer to the community as having spatial structure. As explained in Boxes 21.2 and 21.3, an individual is represented as a Dirac delta function, and the function pi (x) is the sum of ...
Chapter 53 - Community Ecology Powerpoint
... • The total of a species’ use of biotic and abiotic resources is called the species’ ecological niche • An ecological niche can also be thought of as an organism’s ecological role • Ecologically similar species can coexist in a community if there are one or more significant differences in their nich ...
... • The total of a species’ use of biotic and abiotic resources is called the species’ ecological niche • An ecological niche can also be thought of as an organism’s ecological role • Ecologically similar species can coexist in a community if there are one or more significant differences in their nich ...
Summary of Seahorse Population and Distribution Report on seahorse demographics and habitats
... one of eight possible directions (N, NE, E, SE, S, SW, W, NW). Transects were created by laying two 50m lines parallel, spaced 5m apart, projecting from the starting point in the randomly assigned direction. Two divers swim from the original side on either side of the first transect line, each surve ...
... one of eight possible directions (N, NE, E, SE, S, SW, W, NW). Transects were created by laying two 50m lines parallel, spaced 5m apart, projecting from the starting point in the randomly assigned direction. Two divers swim from the original side on either side of the first transect line, each surve ...
A hierarchical view of habitat and its relationship to species
... may display a variety of shapes, with distinct plateau regions where densities would neither increase nor decrease significantly (see figure 4.2b). Furthermore, actual data do not show that widespread species have enormous densities in the center of their geographical range. The value of the Brown m ...
... may display a variety of shapes, with distinct plateau regions where densities would neither increase nor decrease significantly (see figure 4.2b). Furthermore, actual data do not show that widespread species have enormous densities in the center of their geographical range. The value of the Brown m ...
Species diversity: from global decreases to local
... important. At local scales, however, biological and physical interactions become extremely important in determining diversity. This is because interactions between species, and interactions between species and their physical environment, will have a significant effect on the total number of species ...
... important. At local scales, however, biological and physical interactions become extremely important in determining diversity. This is because interactions between species, and interactions between species and their physical environment, will have a significant effect on the total number of species ...
Species diversity: from global decreases to local increases
... reduced ‘natural’ levels of diversity within species assemblages and then measured the consequences of these reductions on one or more measures of ecosystem functioning (e.g. [8]). This approach is only sufficient, however, if most species assemblages are declining in diversity. Recently published e ...
... reduced ‘natural’ levels of diversity within species assemblages and then measured the consequences of these reductions on one or more measures of ecosystem functioning (e.g. [8]). This approach is only sufficient, however, if most species assemblages are declining in diversity. Recently published e ...