Maureen McClung - Biology Department | UNC Chapel Hill
... in his theory when he first introduced the n-dimensional hypervolume. His theory assumes the niche to be equally optimal in all areas, however it is inevitably suboptimal near borders. It also assumes that all environmental variables can be linearly ordered, which is not possible. The model also ref ...
... in his theory when he first introduced the n-dimensional hypervolume. His theory assumes the niche to be equally optimal in all areas, however it is inevitably suboptimal near borders. It also assumes that all environmental variables can be linearly ordered, which is not possible. The model also ref ...
Habitat filtering and niche differentiation jointly explain
... niche (Violle & Jiang, 2009; Devictor et al., 2010). Plant traits usually co-vary along axes of specialization (Diaz et al., 2004), reflecting different trade-offs for plant functioning that ultimately affect species’ reproduction, survival and growth (Suding et al., 2003; Westoby & Wright, 2006). F ...
... niche (Violle & Jiang, 2009; Devictor et al., 2010). Plant traits usually co-vary along axes of specialization (Diaz et al., 2004), reflecting different trade-offs for plant functioning that ultimately affect species’ reproduction, survival and growth (Suding et al., 2003; Westoby & Wright, 2006). F ...
Identification Booklet
... This booklet contains information on major species that have invaded marine environments of eastern Canada - how to identify them and what you can do to prevent their spread and establishment. ...
... This booklet contains information on major species that have invaded marine environments of eastern Canada - how to identify them and what you can do to prevent their spread and establishment. ...
Community Ecology
... 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 niches ...
... 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 niches ...
Chapter 54
... 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 niches ...
... 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 niches ...
Community ecology PPT - Narragansett Schools
... 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 niches ...
... 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 niches ...
This article was originally published in a journal
... limited, they compete vigorously and it is easy to manipulate the availability of their limiting resource by providing habitat, both natural and artificial. Furthermore, fouling communities represent a highly tractable, well studied system (e.g. Connell and Glasby, 1999; Connell, 2001; Stachowicz et ...
... limited, they compete vigorously and it is easy to manipulate the availability of their limiting resource by providing habitat, both natural and artificial. Furthermore, fouling communities represent a highly tractable, well studied system (e.g. Connell and Glasby, 1999; Connell, 2001; Stachowicz et ...
Towards a mechanistic understanding of fish species niche
... target species are not necessarily causally linked. For example, elevation may be an informative predictor of a species’ distribution, but it is only indirectly linked to population dynamics through a correlation with temperature that directly affects individual performance. Inconsistent correlation ...
... target species are not necessarily causally linked. For example, elevation may be an informative predictor of a species’ distribution, but it is only indirectly linked to population dynamics through a correlation with temperature that directly affects individual performance. Inconsistent correlation ...
Bathymetric trends in demersal fish size: is there a
... haul, the total number and weight of fish collected was calculated for each species, and all fish collected (or a subsample of 250 when more than 300 were collected) were measured to calculate the average size (total fish length, in cm) of the fish within each sample. We used the arithmetic mean, ra ...
... haul, the total number and weight of fish collected was calculated for each species, and all fish collected (or a subsample of 250 when more than 300 were collected) were measured to calculate the average size (total fish length, in cm) of the fish within each sample. We used the arithmetic mean, ra ...
5 THE ECOLOGICAL NICHES OF LEPTOSPERMUM SCOPAR/UM
... environmental parameters defining it are known, although they are reasonably well known for some cultivated species. Many ecologists have (sometimes unwittingly) contributed to the knowledge of the ecological niche of the species they were studying by measuring some of the niche parameters. Further ...
... environmental parameters defining it are known, although they are reasonably well known for some cultivated species. Many ecologists have (sometimes unwittingly) contributed to the knowledge of the ecological niche of the species they were studying by measuring some of the niche parameters. Further ...
Understanding co‐occurrence by modelling species simultaneously
... Similarities in environmental responses of species can be accommodated in multispecies SDMs (Ovaskainen & Soininen 2011; Pollock, Morris & Vesk 2012), and such responses to environmental gradients can be modelled as a function of species traits (Pollock, Morris & Vesk 2012). However, not all feature ...
... Similarities in environmental responses of species can be accommodated in multispecies SDMs (Ovaskainen & Soininen 2011; Pollock, Morris & Vesk 2012), and such responses to environmental gradients can be modelled as a function of species traits (Pollock, Morris & Vesk 2012). However, not all feature ...
Bi212CoastalFieldTripW14
... Most species are successful competitors only within rather narrow ranges of physical and biological conditions. As a result, their distribution is restricted to those ...
... Most species are successful competitors only within rather narrow ranges of physical and biological conditions. As a result, their distribution is restricted to those ...
I-HEDGE: determining the optimum complementary sets of taxa for
... SH, and modified the HED script to calculate I-HEDGE in the R statistical package (http://www.R-project.org/). HED values are used to calculate HEDGE, which is the product of HED and the p(ext) for the taxon. For the calculation of HED and HEDGE, it is important to use the best available information ...
... SH, and modified the HED script to calculate I-HEDGE in the R statistical package (http://www.R-project.org/). HED values are used to calculate HEDGE, which is the product of HED and the p(ext) for the taxon. For the calculation of HED and HEDGE, it is important to use the best available information ...
Different but equal: the implausible assumption at the heart of
... than niche theory (e.g. Hubbell 2005; Hubbel 2006). The argument goes that neutral models are simpler than niche models, because they need to postulate fewer processes, described by fewer parameters. Therefore, in the absence of data, or in the presence of data that does not strongly distinguish bet ...
... than niche theory (e.g. Hubbell 2005; Hubbel 2006). The argument goes that neutral models are simpler than niche models, because they need to postulate fewer processes, described by fewer parameters. Therefore, in the absence of data, or in the presence of data that does not strongly distinguish bet ...
Why Marine Islands Are Farther Apart in the Tropics.
... Pearse et al. 1991; O’Connor et al. 2007; Valentine and Jablonski. 2010; Marshall et al. 2012). There are additional complications. Some marine invertebrates and fish have aplanktonic larvae; their lecithotrophic eggs are attached to a substrate or brooded by a parent rather than being released into ...
... Pearse et al. 1991; O’Connor et al. 2007; Valentine and Jablonski. 2010; Marshall et al. 2012). There are additional complications. Some marine invertebrates and fish have aplanktonic larvae; their lecithotrophic eggs are attached to a substrate or brooded by a parent rather than being released into ...
1091-Lec8Fraga
... Residuals - unexplained variation after controlling for change in patch size or total edge due to loss of habitat ...
... Residuals - unexplained variation after controlling for change in patch size or total edge due to loss of habitat ...
Ecology 86(7)
... is unsaturated, or lacks diversity due to a limited regional pool of species (Tilman 1997, Sax and Brown 2000, Moore et al. 2001, Dupré et al. 2002, Ricklefs 2004, Shurin and Srivastava, in press). For example, the widely divergent tree species diversity between the temperate zones of eastern Asian ...
... is unsaturated, or lacks diversity due to a limited regional pool of species (Tilman 1997, Sax and Brown 2000, Moore et al. 2001, Dupré et al. 2002, Ricklefs 2004, Shurin and Srivastava, in press). For example, the widely divergent tree species diversity between the temperate zones of eastern Asian ...
Reviewer #1: Comments: The abstract is usually a short summary of
... Comments: It seems also that more finely tuned knowledge on this species is needed before we can come to serious conclusions. This includes also conclusions on reasons and mechanisms of range expansion. The current state of research is that A. vulgaris might possibly have had its original range som ...
... Comments: It seems also that more finely tuned knowledge on this species is needed before we can come to serious conclusions. This includes also conclusions on reasons and mechanisms of range expansion. The current state of research is that A. vulgaris might possibly have had its original range som ...
Conservation and Ecosystem Powerpoint
... The most severe threats to species loss come from four general categories: Loss or degradation of habitat Introduction of non-native species Overexploitation of species Pollution ...
... The most severe threats to species loss come from four general categories: Loss or degradation of habitat Introduction of non-native species Overexploitation of species Pollution ...
On the Use of Surrogate Species in Conservation Biology
... et al 1993; Power et al. 1996). Keystone species are not used as a shortcut to describe patterns and processes in conservation biology and have never been successfully used as surrogate species, although they may be relevant in choosing them (Simberloff 1998). Conservation biologists employ surrogat ...
... et al 1993; Power et al. 1996). Keystone species are not used as a shortcut to describe patterns and processes in conservation biology and have never been successfully used as surrogate species, although they may be relevant in choosing them (Simberloff 1998). Conservation biologists employ surrogat ...
Selecting umbrella species for conservation
... umbrella species can protect target groups or habitats provided they are carefully chosen using quantitative and standardized methods and explicit criteria (Carroll et al., 2001; Favreau et al., 2006). Umbrella species should also be chosen at the appropriate scale, represent ecologically-linked tax ...
... umbrella species can protect target groups or habitats provided they are carefully chosen using quantitative and standardized methods and explicit criteria (Carroll et al., 2001; Favreau et al., 2006). Umbrella species should also be chosen at the appropriate scale, represent ecologically-linked tax ...
A General Approach to the Modelling of Trophic Chains
... Mass conservation is a controversial issue in population dynamics. Some authors have argued that population dynamics models do not have to conform to ...
... Mass conservation is a controversial issue in population dynamics. Some authors have argued that population dynamics models do not have to conform to ...
Full-text PDF - Association for the Sciences of Limnology
... particles per species. Unfortunately, Brunchioasychis americana is so rare at this latitude that as many as 25 individuals have not been collected. No data on the gut contents of this species are available. The measurements were grouped into the same six size classes used for tubes and parent sedime ...
... particles per species. Unfortunately, Brunchioasychis americana is so rare at this latitude that as many as 25 individuals have not been collected. No data on the gut contents of this species are available. The measurements were grouped into the same six size classes used for tubes and parent sedime ...
Global Population Dynamics and Hot Spots of Response to Climate
... trends and their associations with abiotic conditions. The cuckoo analysis, however, also accounted statistically for the potentially confounding influences of intraspecific competition and spatial variation in density by including coefficients of direct density dependence and estimates of the mean ...
... trends and their associations with abiotic conditions. The cuckoo analysis, however, also accounted statistically for the potentially confounding influences of intraspecific competition and spatial variation in density by including coefficients of direct density dependence and estimates of the mean ...
Scale, Environment, and Trophic Status: The Context Dependency
... estimated asymptote is infinite, or occurs at an unattainably high local richness, the community is not saturated. Because we are interested specifically in factors constraining the upper limits to local richness (rather than the mean local richness), we use nonlinear quantile regression (Scharf et ...
... estimated asymptote is infinite, or occurs at an unattainably high local richness, the community is not saturated. Because we are interested specifically in factors constraining the upper limits to local richness (rather than the mean local richness), we use nonlinear quantile regression (Scharf et ...