Nordic Society Oikos
... and their prevalence and importance in natural communities is critical to understanding the distribution and abundance of extant species and the processes which give rise to new species. Examining competition in a broad range of systems, including model systems (Lawton 1997, Morin 1997), allows us t ...
... and their prevalence and importance in natural communities is critical to understanding the distribution and abundance of extant species and the processes which give rise to new species. Examining competition in a broad range of systems, including model systems (Lawton 1997, Morin 1997), allows us t ...
7. Annex 2 – Review of Theoretical Community Ecology
... Knowing that the mean size of fish in the assemblage has decreased provides little or no information about changes in the biodiversity of the fish assemblage; neither does it help managers to set biodiversity objectives or identify appropriate measures to achieve these. In order to address questions ...
... Knowing that the mean size of fish in the assemblage has decreased provides little or no information about changes in the biodiversity of the fish assemblage; neither does it help managers to set biodiversity objectives or identify appropriate measures to achieve these. In order to address questions ...
Diversity and Distribution of Spiders in Southwestern Nigeria
... many spiders that give various nasty bites comparable to the stinging of a wasp. Most of the venom injected with these bites causes cell death and give rise to a wound that does not heal properly and becomes easily infected, such spiders are not found in the course of this study. In hill habitat, ni ...
... many spiders that give various nasty bites comparable to the stinging of a wasp. Most of the venom injected with these bites causes cell death and give rise to a wound that does not heal properly and becomes easily infected, such spiders are not found in the course of this study. In hill habitat, ni ...
Seagrass patch size affects fish responses to edges
... Any interaction between sampling positions and patches would suggest that variation between patches may be affecting edge effects. To assess if positions and patches interacted, species richness and the density of the two most abundant species were each analysed using a three-factor, repeated-measur ...
... Any interaction between sampling positions and patches would suggest that variation between patches may be affecting edge effects. To assess if positions and patches interacted, species richness and the density of the two most abundant species were each analysed using a three-factor, repeated-measur ...
How parasites affect interactions between competitors and predators
... parasite–host relationships; one reason being that concepts from foraging theory and behavioural ecology have seldom been applied to parasites. For instance, there is no obvious analogue for parasites of handling time or predator functional response. Nevertheless, as parasites rarely kill their host ...
... parasite–host relationships; one reason being that concepts from foraging theory and behavioural ecology have seldom been applied to parasites. For instance, there is no obvious analogue for parasites of handling time or predator functional response. Nevertheless, as parasites rarely kill their host ...
FLUCTUATING ASYMMETRY AND BODY MORPHOLOGY IN RELATION TO POPULATION NEW ZEALAND
... study I measured fluctuating asymmetry (FA; random deviations from symmetry between bilaterally symmetrical traits) in 13 species of introduced birds in NZ. FA has been used for conservation purposes as an early warning system of increased developmental instability (DI; the inability to cope with ra ...
... study I measured fluctuating asymmetry (FA; random deviations from symmetry between bilaterally symmetrical traits) in 13 species of introduced birds in NZ. FA has been used for conservation purposes as an early warning system of increased developmental instability (DI; the inability to cope with ra ...
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... whether called culling or hunting—of Yellowstone bison continues today. In fact, given the relatively small size of the Yellowstone bison population, the amount of loss of bison associated with human activity is significant. For example, it is estimated that in 1996-97, culling of Yellowstone bison ...
... whether called culling or hunting—of Yellowstone bison continues today. In fact, given the relatively small size of the Yellowstone bison population, the amount of loss of bison associated with human activity is significant. For example, it is estimated that in 1996-97, culling of Yellowstone bison ...
Refining mimicry: phenotypic variation tracks the local
... switches in mimicry association, producing a well-known mosaic distribution of mimicry patterns across geography. However, little is known about the accuracy of resemblance between natural comimics when the local phenotypic optimum varies. 2. In this study, using analyses of wing shape, pattern and ...
... switches in mimicry association, producing a well-known mosaic distribution of mimicry patterns across geography. However, little is known about the accuracy of resemblance between natural comimics when the local phenotypic optimum varies. 2. In this study, using analyses of wing shape, pattern and ...
The University of Chicago
... was considerable potential for predators to exert their influence on plants via density-mediated and traitmediated indirect effects (Beckerman et al. 1997; Rothley et al. 1997; Schmitz et al. 1997). That series of studies examined adaptive shifts in M. femurrubrum foraging behavior in response to pr ...
... was considerable potential for predators to exert their influence on plants via density-mediated and traitmediated indirect effects (Beckerman et al. 1997; Rothley et al. 1997; Schmitz et al. 1997). That series of studies examined adaptive shifts in M. femurrubrum foraging behavior in response to pr ...
Feeding Selectivity and Habitat Usage of Esox americanus
... abundance and distributional patterns of prey, as well as morphological and behavioral characteristics of both the predator (e.g., gape limitation, foraging strategy) and prey (e.g., defense and escape mechanisms, microhabitat selection). ...
... abundance and distributional patterns of prey, as well as morphological and behavioral characteristics of both the predator (e.g., gape limitation, foraging strategy) and prey (e.g., defense and escape mechanisms, microhabitat selection). ...
Diet and impacts of brushtail possum populations across an
... when the relative abundances of possums and common bird species were monitored, and vegetation composition and condition were assessed. The sampling strategy used in this study means that we effectively have a sample size of one for each site sampled, although we use sampling stations and individual ...
... when the relative abundances of possums and common bird species were monitored, and vegetation composition and condition were assessed. The sampling strategy used in this study means that we effectively have a sample size of one for each site sampled, although we use sampling stations and individual ...
Technical manual for sampling small mammals in the Arctic
... ounting and measuring all individuals in an animal population is usually impossible, either because there are too many individuals, they move or they live under cover and are therefore difficult to see or catch. To circumvent this problem, we usually divide the populations in a number of smaller uni ...
... ounting and measuring all individuals in an animal population is usually impossible, either because there are too many individuals, they move or they live under cover and are therefore difficult to see or catch. To circumvent this problem, we usually divide the populations in a number of smaller uni ...
species interactions in intertidal food webs: prey or predation
... Whelk densities before manipulations were compared using two-way ANOVA with Mytilus and Pisaster densities as orthogonal treatments. Log-transformed data exhibited visually normal distribution and variance homogeneity according to Cochran’s C test (Underwood 1997). Log transformation seemed appropri ...
... Whelk densities before manipulations were compared using two-way ANOVA with Mytilus and Pisaster densities as orthogonal treatments. Log-transformed data exhibited visually normal distribution and variance homogeneity according to Cochran’s C test (Underwood 1997). Log transformation seemed appropri ...
Emerging patterns in the comparative analysis of phylogenetic
... increased to the point where comparison of their results can now be used to highlight successes and deficiencies in the approach, and to detect emerging patterns in community organization. We review studies of the phylogenetic structure of communities of different major taxa and trophic levels, acro ...
... increased to the point where comparison of their results can now be used to highlight successes and deficiencies in the approach, and to detect emerging patterns in community organization. We review studies of the phylogenetic structure of communities of different major taxa and trophic levels, acro ...
2008 ICTWS Meeting Program - Idaho Chapter of the Wildlife Society
... education, the wildlife profession or to an area of endeavor species, community, ecosystem or region. Any person or group who has made such a contribution in the last 3 years is eligible for this award. The Professional Wildlifer Award honors professionals in wildlife management. It is given to demo ...
... education, the wildlife profession or to an area of endeavor species, community, ecosystem or region. Any person or group who has made such a contribution in the last 3 years is eligible for this award. The Professional Wildlifer Award honors professionals in wildlife management. It is given to demo ...
Movement behaviour and mortality in invasive and indigenous
... survivors responded to freeing of space by increased movement. Due to the extreme spatial and temporal heterogeneity in environmental conditions of rocky intertidal habitats, even the small-scale movements observed during the field experiment are likely to subject mussels to different micro-environm ...
... survivors responded to freeing of space by increased movement. Due to the extreme spatial and temporal heterogeneity in environmental conditions of rocky intertidal habitats, even the small-scale movements observed during the field experiment are likely to subject mussels to different micro-environm ...
Habitat Management Plan for the endangered Forty
... 1998). It is therefore difficult to determine the maximum distance between suitable patches which can still support dispersal. It is also difficult to determine the minimum patch size. For instance, it is estimated that a 0.5 ha patch with only 5% E. viminalis is sufficient for a single breeding pai ...
... 1998). It is therefore difficult to determine the maximum distance between suitable patches which can still support dispersal. It is also difficult to determine the minimum patch size. For instance, it is estimated that a 0.5 ha patch with only 5% E. viminalis is sufficient for a single breeding pai ...
MECHANISMS INFLUENCING THE GROWTH, REPRODUCTION
... balthica in areas where P. affinis is abundant (Hessle 1924, Segerstrsle 1962) can be explained by the negative effect of M. affinis on the survival of Macoma spat, as shown in laboratory experiments by Elmgren et al. (1986). Fluctuations in the abundance of M. affinis (Segerstrsle 1937, 1960, Ander ...
... balthica in areas where P. affinis is abundant (Hessle 1924, Segerstrsle 1962) can be explained by the negative effect of M. affinis on the survival of Macoma spat, as shown in laboratory experiments by Elmgren et al. (1986). Fluctuations in the abundance of M. affinis (Segerstrsle 1937, 1960, Ander ...
Management Plan Supplement - Yakima/Klickitat Fisheries Project
... abundance. Historically, 500,000-900,000 adult salmon and steelhead returned to the Yakima Subbasin annually. This total was comprised of spring, summer, and fall chinook, coho, sockeye, and steelhead. Summer chinook, sockeye, and native coho are extinct in the subbasin. Coho currently found in the ...
... abundance. Historically, 500,000-900,000 adult salmon and steelhead returned to the Yakima Subbasin annually. This total was comprised of spring, summer, and fall chinook, coho, sockeye, and steelhead. Summer chinook, sockeye, and native coho are extinct in the subbasin. Coho currently found in the ...
Pumpkinseed (Lepomis gibbosus)
... Risk assessments consider only the risks posed by a species. They do not consider the practicalities, impacts or other issues relating to the management of the species. They therefore cannot on their own be used to determine what, if any, management response should be undertaken. Risk assessment ...
... Risk assessments consider only the risks posed by a species. They do not consider the practicalities, impacts or other issues relating to the management of the species. They therefore cannot on their own be used to determine what, if any, management response should be undertaken. Risk assessment ...
strayer 2008 freshwater invertebrate conservation
... plan require solid experimental, monitoring, or modeling information. This information typically has to be extensive and of good quality because it may have to withstand legal challenges. We have none of this information for most freshwater invertebrates, and reasonably complete information for just ...
... plan require solid experimental, monitoring, or modeling information. This information typically has to be extensive and of good quality because it may have to withstand legal challenges. We have none of this information for most freshwater invertebrates, and reasonably complete information for just ...
Biotechnology and Plant Health International Regulatory Approaches
... alien invasive species that are plant pests and that are not present (if present then limited distribution + official control) should be considered quarantine pests and should be subjected to measures according to IPPC provisions ...
... alien invasive species that are plant pests and that are not present (if present then limited distribution + official control) should be considered quarantine pests and should be subjected to measures according to IPPC provisions ...
Is there a relationship between herbaceous species richness and
... species found at each successive scale. Although successive scales doubled in size, all scales were searched on a 1 m2 basis using a square metal frame moved over the area to outline contiguous quadrats. When determining species numbers, unidentifiable plants were counted if they were distinct from ...
... species found at each successive scale. Although successive scales doubled in size, all scales were searched on a 1 m2 basis using a square metal frame moved over the area to outline contiguous quadrats. When determining species numbers, unidentifiable plants were counted if they were distinct from ...