Habitat suitability modelling and niche theory
... live in metapopulations (Anderson, Peterson & GómezLaverde 2002; Peterson & Holt 2003). Thus, when spatial heterogeneity and dispersal limitations are accounted for, the differences between the realized and fundamental niches may be much smaller than expected from the spatially homogeneous environme ...
... live in metapopulations (Anderson, Peterson & GómezLaverde 2002; Peterson & Holt 2003). Thus, when spatial heterogeneity and dispersal limitations are accounted for, the differences between the realized and fundamental niches may be much smaller than expected from the spatially homogeneous environme ...
Chapter 56 lecture outline
... Here are some reasons conservation biologists are concerned about species loss. o The International Union for Conservation of Natural Resources (IUCN) reports that 12% of nearly 10,000 known bird species and 20% of nearly 5,000 known mammal species are threatened with extinction. o The Center for Pl ...
... Here are some reasons conservation biologists are concerned about species loss. o The International Union for Conservation of Natural Resources (IUCN) reports that 12% of nearly 10,000 known bird species and 20% of nearly 5,000 known mammal species are threatened with extinction. o The Center for Pl ...
INDECO: Results of the investigation of modelling methods and
... functional one. Such a relationship cannot be tested using solely descriptive data. Consider the example of a freshwater outfall that discharges into an estuary. Away from the outfall, the concentration of many different contaminants decreases and species richness increases. Hypothetically, the loss ...
... functional one. Such a relationship cannot be tested using solely descriptive data. Consider the example of a freshwater outfall that discharges into an estuary. Away from the outfall, the concentration of many different contaminants decreases and species richness increases. Hypothetically, the loss ...
Biological interactions in fish stocks: models and reality
... has been demonstrated for a variety of predatorprey models and the existence of chaotic dynamics for Lotka-Volterra type systems with one predator and two prey and for a three species food chain was shown in Klebanoff and Hastings (1994, 1994a). The general conclusion which can be drawn from these t ...
... has been demonstrated for a variety of predatorprey models and the existence of chaotic dynamics for Lotka-Volterra type systems with one predator and two prey and for a three species food chain was shown in Klebanoff and Hastings (1994, 1994a). The general conclusion which can be drawn from these t ...
Recovery After Mass Extinction: Evolutionary assembly in large
... SFI Working Papers contain accounts of scientific work of the author(s) and do not necessarily represent the views of the Santa Fe Institute. We accept papers intended for publication in peer-reviewed journals or proceedings volumes, but not papers that have already appeared in print. Except for pap ...
... SFI Working Papers contain accounts of scientific work of the author(s) and do not necessarily represent the views of the Santa Fe Institute. We accept papers intended for publication in peer-reviewed journals or proceedings volumes, but not papers that have already appeared in print. Except for pap ...
Large mammal diversity and their conservation in the human
... (Spearman’s correlation, conducted separately per species: largest q = 0.2, average q = 0.04, all N = 426 transects). In the following analyses we used for each species the most common sign class that was present on more transects and took this as a measure of its relative abundance. The selected si ...
... (Spearman’s correlation, conducted separately per species: largest q = 0.2, average q = 0.04, all N = 426 transects). In the following analyses we used for each species the most common sign class that was present on more transects and took this as a measure of its relative abundance. The selected si ...
EPBC Act Protected Matters Report - NT EPA
... - some terrestrial species that overfly the Commonwealth marine area - migratory species that are very widespread, vagrant, or only occur in small numbers The following groups have been mapped, but may not cover the complete distribution of the species: - non-threatened seabirds which have only been ...
... - some terrestrial species that overfly the Commonwealth marine area - migratory species that are very widespread, vagrant, or only occur in small numbers The following groups have been mapped, but may not cover the complete distribution of the species: - non-threatened seabirds which have only been ...
Dasyurus maculatus - profile (PDF 630 KB)
... NPWS in prep.) • Loss of large hollow logs and other potential den sites (Scotts 1992) • Competition for food and predation by foxes and cats (Edgar & Belcher 1995; Dickman & Read 1992) • Spread of epidemics, such as a parasitic protozoan, by cats to the Quolls (Edgar & Belcher 1995; Dickman & Read ...
... NPWS in prep.) • Loss of large hollow logs and other potential den sites (Scotts 1992) • Competition for food and predation by foxes and cats (Edgar & Belcher 1995; Dickman & Read 1992) • Spread of epidemics, such as a parasitic protozoan, by cats to the Quolls (Edgar & Belcher 1995; Dickman & Read ...
Ecological Effectiveness: Conservation Goals for Interactive Species
... Figure 1. Functional relationships between population abundances of the drivers ( horizontal axes) and passengers (vertical axes) in kelp-forest ecosystems of the North Pacific Ocean. Solid lines indicate hypothetical linear response functions and broken lines the known or suspected functional relat ...
... Figure 1. Functional relationships between population abundances of the drivers ( horizontal axes) and passengers (vertical axes) in kelp-forest ecosystems of the North Pacific Ocean. Solid lines indicate hypothetical linear response functions and broken lines the known or suspected functional relat ...
The Ecological Niche in Aquatic Ecosystems
... exceeding 3 was unusual but not bothersome in 1957, by which time physicists had already conveyed at least to the science community that not only the three dimensions of space, but also time, a fourth dimension, define physical realities of the universe. Thus, conceptually, we may think of the ecolo ...
... exceeding 3 was unusual but not bothersome in 1957, by which time physicists had already conveyed at least to the science community that not only the three dimensions of space, but also time, a fourth dimension, define physical realities of the universe. Thus, conceptually, we may think of the ecolo ...
Influences of the El Niño/Southern Oscillation and the North Atlantic
... breeding (or unmated) adults and young from within the boundaries of the station and from the local landscape surrounding the station. This assumption is supported by an analysis of data from six stations located at Big Oaks National Wildlife Refuge, Indiana, that showed reproductive indices for fou ...
... breeding (or unmated) adults and young from within the boundaries of the station and from the local landscape surrounding the station. This assumption is supported by an analysis of data from six stations located at Big Oaks National Wildlife Refuge, Indiana, that showed reproductive indices for fou ...
Reid
... Instead of relying on indicator taxa to reflect disaNumbers in parentheses are total possible overlaps. tribution patterns in lesserknown taxa, other studies have examined the potential value of other surrogate measures of species richness or endemism, including vegetation Setting conservation prior ...
... Instead of relying on indicator taxa to reflect disaNumbers in parentheses are total possible overlaps. tribution patterns in lesserknown taxa, other studies have examined the potential value of other surrogate measures of species richness or endemism, including vegetation Setting conservation prior ...
... more invasible environment means that more of the dispersing propagules will be able to become established, thereby increasing diversity whenever the newly established propagules represent a new species. If invasibility represents the accessibility of an environment to all prospective colonizers, th ...
MARINE BIOME
... prey, whereas the starfish hunts sessile prey. The starfish's strong arms enable it to pry open shells of oysters and clams (molluscs). Squid and jellyfish are also carnivores but they use different methods of prey capture. Squid hunt their prey and use sucker-like discs on their tentacles for captu ...
... prey, whereas the starfish hunts sessile prey. The starfish's strong arms enable it to pry open shells of oysters and clams (molluscs). Squid and jellyfish are also carnivores but they use different methods of prey capture. Squid hunt their prey and use sucker-like discs on their tentacles for captu ...
Section 4 - Chandler Unified School District / Overview
... • No two species that are too similar can coexist because they are too similar in their needs. • In general, there are two main types of competition: • Interspecific Competition: Competition between different species. • Intraspecific Competition: Competition between individuals within the same speci ...
... • No two species that are too similar can coexist because they are too similar in their needs. • In general, there are two main types of competition: • Interspecific Competition: Competition between different species. • Intraspecific Competition: Competition between individuals within the same speci ...
SHARKS: THREAT OR THREATENED?
... In the Mediterranean Sea sharks are more seriously threatened and their reduction is faster than elsewhere worldwide. Specifically, according to the IUCN (International Union for Conservation of Nature) Red List of Threatened Species, for 38 shark species present in the Mediterranean 53% (20 species ...
... In the Mediterranean Sea sharks are more seriously threatened and their reduction is faster than elsewhere worldwide. Specifically, according to the IUCN (International Union for Conservation of Nature) Red List of Threatened Species, for 38 shark species present in the Mediterranean 53% (20 species ...
Can more K-selected species be better invaders? A case study of
... successively invaded: Ceratitis capitata (Wiedemann) in 1939, Ceratitis rosa Karsch in 1955, and Bactrocera zonata (Saunders) in 1991. Each newly arrived species has partially excluded and/or displaced each other, and has become largely dominant over previous ones, at least in the lowlands (< 100 m ...
... successively invaded: Ceratitis capitata (Wiedemann) in 1939, Ceratitis rosa Karsch in 1955, and Bactrocera zonata (Saunders) in 1991. Each newly arrived species has partially excluded and/or displaced each other, and has become largely dominant over previous ones, at least in the lowlands (< 100 m ...
REVIEW The importance of evolutionary history in studies of plant
... species had high values of LAR, the savanna species of the same genus also had high values of LAR. By grouping the species in congeneric pairs, we can eliminate the effects of genus and strengthen our ability to observe convergence within each functional type. In these examples, analysis of variance ...
... species had high values of LAR, the savanna species of the same genus also had high values of LAR. By grouping the species in congeneric pairs, we can eliminate the effects of genus and strengthen our ability to observe convergence within each functional type. In these examples, analysis of variance ...
Dispersal traits determine plant response to habitat
... estimated for each species separately, rather than assuming identical niche requirements for species inhabiting a given habitat type. For instance, regarding all forest fragments as suitable habitat for understorey species is error-prone as subtle differences in e.g. soil acidity may suffice to make ...
... estimated for each species separately, rather than assuming identical niche requirements for species inhabiting a given habitat type. For instance, regarding all forest fragments as suitable habitat for understorey species is error-prone as subtle differences in e.g. soil acidity may suffice to make ...
Temporal stability of European rocky shore assemblages
... The role of these mechanisms and, in particular, of species fluctuations, on stability has been investigated in a variety of terrestrial and aquatic systems, including lacustrine plankton, vascular plant communities, invertebrate and vertebrate assemblages (Klug et al. 2000, Fischer et al. 2001, Rom ...
... The role of these mechanisms and, in particular, of species fluctuations, on stability has been investigated in a variety of terrestrial and aquatic systems, including lacustrine plankton, vascular plant communities, invertebrate and vertebrate assemblages (Klug et al. 2000, Fischer et al. 2001, Rom ...
Drawing ecological inferences from coincident patterns of
... One of the most striking features of the natural world is a seeming match between the traits of organisms and the environments in which they live. For example, plants with small, thick leaves are typically associated with hot and dry environments (Ehleringer 1985), while animal body size often incre ...
... One of the most striking features of the natural world is a seeming match between the traits of organisms and the environments in which they live. For example, plants with small, thick leaves are typically associated with hot and dry environments (Ehleringer 1985), while animal body size often incre ...
- WIT Repository
... 2(b)) and hence the diversity effect. D varies from nearly 0 for t-species communities that ...
... 2(b)) and hence the diversity effect. D varies from nearly 0 for t-species communities that ...
ALOACEAE The Aloaceae is a medium
... cult to estimate generation time reliably w ithout compre hensive field work or autecological studies. At least a 2 0 ^ decline had occurred in this period of time (placing the taxon in the VU category). In some cases it may well be higher, but more reliable data would be necessary to estimate a 50 ...
... cult to estimate generation time reliably w ithout compre hensive field work or autecological studies. At least a 2 0 ^ decline had occurred in this period of time (placing the taxon in the VU category). In some cases it may well be higher, but more reliable data would be necessary to estimate a 50 ...