Meeting the Challenge of Invasive Plants: A Framework for Action
... become established, valued ecosystems, species, including rare and declining wildlife, hunting opportunities and other wildlife related activities are diminished. ...
... become established, valued ecosystems, species, including rare and declining wildlife, hunting opportunities and other wildlife related activities are diminished. ...
Niche and fitness differences relate the maintenance of
... hypothesis testing, while their absolute magnitudes should be interpreted more cautiously because ...
... hypothesis testing, while their absolute magnitudes should be interpreted more cautiously because ...
Protists in soil ecology and forest nutrient cycling
... site will vary as conditions change. In this situation, the dynamics of populations through active–inactive cycles are more informative. Variations in active species through time reflect changes in the local microclimate, abiotic factors, and species community structure. This is an important conside ...
... site will vary as conditions change. In this situation, the dynamics of populations through active–inactive cycles are more informative. Variations in active species through time reflect changes in the local microclimate, abiotic factors, and species community structure. This is an important conside ...
Absence of phylogenetic signal in the niche structure of meadow
... Why should the traits that determine a niches be less conservative in their evolution than those that determine b niches? We propose that the reason lies in the hierarchical nature of community assembly. A plant’s b niche defines the habitat or habitats in which it can survive. Habitats differ from ...
... Why should the traits that determine a niches be less conservative in their evolution than those that determine b niches? We propose that the reason lies in the hierarchical nature of community assembly. A plant’s b niche defines the habitat or habitats in which it can survive. Habitats differ from ...
Niche theory and guilds
... Ecological niches can thus be defined in terms of: -response functions: how species are distributed on environmental gradients with respect to limitation and optimal performance (a physiological view, prevalent among plant ecologists), i.e., a species’ response to the environment (Whose ideas follow ...
... Ecological niches can thus be defined in terms of: -response functions: how species are distributed on environmental gradients with respect to limitation and optimal performance (a physiological view, prevalent among plant ecologists), i.e., a species’ response to the environment (Whose ideas follow ...
Nest predation in New Zealand songbirds: Exotic predators
... New Zealand songbirds (see Appendix S1). From the resulting articles we extracted where possible the number of nests destroyed by predators, number of failed nests, number of nests studied, and when and where the study was done. An obvious constraint on the data is that it is not always possible to ...
... New Zealand songbirds (see Appendix S1). From the resulting articles we extracted where possible the number of nests destroyed by predators, number of failed nests, number of nests studied, and when and where the study was done. An obvious constraint on the data is that it is not always possible to ...
Biogeomorphic Impacts of Invasive Species
... significant impacts on geomorphological processes and landforms, while landforms and surface processes are in turn critical aspects of habitat for organisms. It has long been recognized that landforms and organisms influence each other. However, the rise of biogeomorphology in recent years reflects the ...
... significant impacts on geomorphological processes and landforms, while landforms and surface processes are in turn critical aspects of habitat for organisms. It has long been recognized that landforms and organisms influence each other. However, the rise of biogeomorphology in recent years reflects the ...
pdf - Gunnar Brehm
... focussed on lowland rainforests, whereas montane rainforests have so far largely been neglected. This is particularly true with regard to studies on arthropods. For example, none of the 89 studies on canopy arthropods reviewed by Basset (2001) was conducted in a tropical montane habitat. The norther ...
... focussed on lowland rainforests, whereas montane rainforests have so far largely been neglected. This is particularly true with regard to studies on arthropods. For example, none of the 89 studies on canopy arthropods reviewed by Basset (2001) was conducted in a tropical montane habitat. The norther ...
A generalized model for population dynamics where interactions
... through fermentation, by directly ingesting complex molecules or any other bacteria they could find around them. In a world where such molecules, remanents from the violent Earth formation, were being consumed during hundreds of millions of years, new forms of energy were becoming a pressing need. T ...
... through fermentation, by directly ingesting complex molecules or any other bacteria they could find around them. In a world where such molecules, remanents from the violent Earth formation, were being consumed during hundreds of millions of years, new forms of energy were becoming a pressing need. T ...
Effects of Natural Forest Fragmentation on a Hawaiian Spider
... al. 2001, Bruna and Kress 2002). Predictions of longerterm ecological and evolutionary impacts have relied most heavily on theory (Gilpin and Soulé 1986) rather than empirical observations (but see Watson 2003). In addition, because most of the fragmentation under study is human induced, it can be ...
... al. 2001, Bruna and Kress 2002). Predictions of longerterm ecological and evolutionary impacts have relied most heavily on theory (Gilpin and Soulé 1986) rather than empirical observations (but see Watson 2003). In addition, because most of the fragmentation under study is human induced, it can be ...
GARRY OAK ECOSYSTEMS RECOVERY TEAM
... communities, thereby preventing migration of populations or mixing of genetic material of species from one area to another. The map of historical distribution of Garry oak ecosystems depicts those areas where Garry oak (Quercus garryana) was believed to be the dominant cover or co-dominant cover wit ...
... communities, thereby preventing migration of populations or mixing of genetic material of species from one area to another. The map of historical distribution of Garry oak ecosystems depicts those areas where Garry oak (Quercus garryana) was believed to be the dominant cover or co-dominant cover wit ...
Journal of Experimental Marine Biology and Ecology
... interspecific relationships, in turn, can drive important local-scale changes in community dynamics, biodiversity, and ecosystem functioning, and can potentially alter large-scale patterns of distribution and abundance. In many cases, the importance of indirect effects of warming, mediated by changin ...
... interspecific relationships, in turn, can drive important local-scale changes in community dynamics, biodiversity, and ecosystem functioning, and can potentially alter large-scale patterns of distribution and abundance. In many cases, the importance of indirect effects of warming, mediated by changin ...
Species Invasions Exceed Extinctions on Islands Worldwide: A
... number of plant species has approximately doubled (i.e., points are tightly distributed along the dashed line that marks a twofold linear increase from the values present on the line of equality in fig. 1B). This doubling in species richness is a consequence of two factors. First, as stated above, f ...
... number of plant species has approximately doubled (i.e., points are tightly distributed along the dashed line that marks a twofold linear increase from the values present on the line of equality in fig. 1B). This doubling in species richness is a consequence of two factors. First, as stated above, f ...
Invasion, Competition, and Biodiversity Loss in Urban
... thrive while preventing potential invasive species from establishing populations or flourishing. Nondrinking animals such as desert rodents, for example, may have an advantage over granivorous birds in extremely dry environments where water is scarce (Shochat et al. 2004a). Once humans remove key hu ...
... thrive while preventing potential invasive species from establishing populations or flourishing. Nondrinking animals such as desert rodents, for example, may have an advantage over granivorous birds in extremely dry environments where water is scarce (Shochat et al. 2004a). Once humans remove key hu ...
Wildlife Study Guide
... Plant succession is the gradual change in plant species in a given area over time. Succession generally occurs in steps or stages until a stable or climax community is reached. Disturbance events such as fire, flooding, wind storms and grazing continually set back succession and the cycle will conti ...
... Plant succession is the gradual change in plant species in a given area over time. Succession generally occurs in steps or stages until a stable or climax community is reached. Disturbance events such as fire, flooding, wind storms and grazing continually set back succession and the cycle will conti ...
Downloaded - University of Kentucky College of Arts and Sciences
... significant impacts on geomorphological processes and landforms, while landforms and surface processes are in turn critical aspects of habitat for organisms. It has long been recognized that landforms and organisms influence each other. However, the rise of biogeomorphology in recent years reflects ...
... significant impacts on geomorphological processes and landforms, while landforms and surface processes are in turn critical aspects of habitat for organisms. It has long been recognized that landforms and organisms influence each other. However, the rise of biogeomorphology in recent years reflects ...
- Wiley Online Library
... Introduction In recent years, amphibians have been the focus of important conservation efforts owing to severe population reductions and even extinction in many species (Houlahan et al., 2000; Stuart et al., 2004; Beebee & Griffiths, 2005). The causes of these declines are complex and sometimes diffic ...
... Introduction In recent years, amphibians have been the focus of important conservation efforts owing to severe population reductions and even extinction in many species (Houlahan et al., 2000; Stuart et al., 2004; Beebee & Griffiths, 2005). The causes of these declines are complex and sometimes diffic ...
How many parasites? - Princeton University
... unable to maintain viable populations in their low-density tropical hosts, in which case host-specific parasites and their hosts could exhibit reverse gradients of species diversity. Empirically, the two best studied parasite taxa show opposite trends: tropical fish species have more monogenean para ...
... unable to maintain viable populations in their low-density tropical hosts, in which case host-specific parasites and their hosts could exhibit reverse gradients of species diversity. Empirically, the two best studied parasite taxa show opposite trends: tropical fish species have more monogenean para ...
A new parameterization for estimating co
... treefrogs may also compete with native treefrogs for food owing to the high degree of dietary overlap among these species (Meshaka 2001). Although the Cuban treefrog is believed to have expanded its range in Florida primarily through human facilitation (Meshaka 1996), this species also appears to be ...
... treefrogs may also compete with native treefrogs for food owing to the high degree of dietary overlap among these species (Meshaka 2001). Although the Cuban treefrog is believed to have expanded its range in Florida primarily through human facilitation (Meshaka 1996), this species also appears to be ...
Year-to-year variation in plant competition in a mountain grassland
... temporal variation in competition (Goldberg & Barton ...
... temporal variation in competition (Goldberg & Barton ...
pdf. - Evolution and Ecology | UC Davis
... in size along different morphological axes. The use of a geometric mean of the linear measures allowed us to capture some of the shape variation associated with size. We measured the morphological characters listed above because each has predictable consequences for performance in ecologically relev ...
... in size along different morphological axes. The use of a geometric mean of the linear measures allowed us to capture some of the shape variation associated with size. We measured the morphological characters listed above because each has predictable consequences for performance in ecologically relev ...
TU National Piscicide Policy
... only tool available for native fish conservation in situations where other methods are impractical or where there are mixed populations of native and non-native species. In smaller ecosystems, electrofishing is the dominant physical control method. Complete removal of non-native trout has been repo ...
... only tool available for native fish conservation in situations where other methods are impractical or where there are mixed populations of native and non-native species. In smaller ecosystems, electrofishing is the dominant physical control method. Complete removal of non-native trout has been repo ...
The Endangered Species Act: What Do We Mean by Species?
... the Dusky Seaside Sparrow (Ammodramus maritimus nigrescens), a subspecies of the Seaside Sparrow (Ammodramus maritime), that until recently was found on the eastern coast of Florida. At the time the legal opinion was sought, the Dusky Seaside Sparrow (Dusky) was in critical decline. Development and ...
... the Dusky Seaside Sparrow (Ammodramus maritimus nigrescens), a subspecies of the Seaside Sparrow (Ammodramus maritime), that until recently was found on the eastern coast of Florida. At the time the legal opinion was sought, the Dusky Seaside Sparrow (Dusky) was in critical decline. Development and ...
a full - British Ecological Society
... influences of body size, and gave numerous examples of omnivores. Lindeman (1942) identified specific levels, but clearly stated that they became less precise as one moves up the food chain. Darnell (1961), amongst many, has argued for the prevalence of rampant trophic opportunism: consumer nutritio ...
... influences of body size, and gave numerous examples of omnivores. Lindeman (1942) identified specific levels, but clearly stated that they became less precise as one moves up the food chain. Darnell (1961), amongst many, has argued for the prevalence of rampant trophic opportunism: consumer nutritio ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.