Species distribution models reveal apparent competitive and
... Abiotic factors are considered strong drivers of species distribution and assemblages. Yet these spatial patterns are also influenced by biotic interactions. Accounting for competitors or facilitators may improve both the fit and the predictive power of species distribution models (SDMs). We investi ...
... Abiotic factors are considered strong drivers of species distribution and assemblages. Yet these spatial patterns are also influenced by biotic interactions. Accounting for competitors or facilitators may improve both the fit and the predictive power of species distribution models (SDMs). We investi ...
Problems in the Measurement of Evenness in Ecology Rauno V
... richness and evenness of abundance distribution into a abundances in the community: maximum evenness single value, has often been criticized owing to the am- (1.0) arising when all species are equally abundant, and biguity of definitions and indices (see Hurlbert 1971, the more relative abundances o ...
... richness and evenness of abundance distribution into a abundances in the community: maximum evenness single value, has often been criticized owing to the am- (1.0) arising when all species are equally abundant, and biguity of definitions and indices (see Hurlbert 1971, the more relative abundances o ...
Diversity and Productivity in a Long-Term Grassland Experiment David Tilman,
... for 1999 and 2000. Moreover, 16-species plots in 1999 and 2000 had 2.7 to 2.9 times greater aboveground and total biomass than the average for all species in monoculture (Fig. 1A). The nonsaturating increase in aboveground biomass with diversity likely reflects niche effects among about 9 to 13 spec ...
... for 1999 and 2000. Moreover, 16-species plots in 1999 and 2000 had 2.7 to 2.9 times greater aboveground and total biomass than the average for all species in monoculture (Fig. 1A). The nonsaturating increase in aboveground biomass with diversity likely reflects niche effects among about 9 to 13 spec ...
Ecological Succession - Miami Beach Senior High School
... • Natural, gradual changes in the types of species that live in an area; can be primary or secondary • The gradual replacement of one plant community by another through natural processes over time ...
... • Natural, gradual changes in the types of species that live in an area; can be primary or secondary • The gradual replacement of one plant community by another through natural processes over time ...
Directing Research to Reduce the Impacts of
... nonindigenous species are likely to increase as international trade in plants and animals increases and as climate and land use continue to change (Office of Technology Assessment 1993). Due to the potential for nonindigenous species to negatively affect populations, communities, and ecosystems of n ...
... nonindigenous species are likely to increase as international trade in plants and animals increases and as climate and land use continue to change (Office of Technology Assessment 1993). Due to the potential for nonindigenous species to negatively affect populations, communities, and ecosystems of n ...
Ecological Succession
... • Natural, gradual changes in the types of species that live in an area; can be primary or secondary • The gradual replacement of one plant community by another through natural processes over time ...
... • Natural, gradual changes in the types of species that live in an area; can be primary or secondary • The gradual replacement of one plant community by another through natural processes over time ...
English - SciELO Costa Rica
... local or total species extinctions. Diversity indices combine the number of species (or species richness), an attribute of the community related to historical factors, and species abundance which is an attribute of the population determined by the reproductive potential and survival rates of each sp ...
... local or total species extinctions. Diversity indices combine the number of species (or species richness), an attribute of the community related to historical factors, and species abundance which is an attribute of the population determined by the reproductive potential and survival rates of each sp ...
biolcons_biodiv_loss - digital
... that our results were not dependent on the employment of specific weight values we calculated three additional estimators of extinction risk, differing in the weights given to each threat category. The first alternative approach used the proportion of threatened and extinct species within each family ...
... that our results were not dependent on the employment of specific weight values we calculated three additional estimators of extinction risk, differing in the weights given to each threat category. The first alternative approach used the proportion of threatened and extinct species within each family ...
Rusty Crayfish Invades Ontario Waters
... large group of organisms called crustaceans. It is one of approximately 350 crayfish species found in North American waters. Rusty crayfish is native to the Ohio River system of Ohio, Kentucky and Indiana, but has been introduced to many northern lakes and streams where it is a cause for concern. Ru ...
... large group of organisms called crustaceans. It is one of approximately 350 crayfish species found in North American waters. Rusty crayfish is native to the Ohio River system of Ohio, Kentucky and Indiana, but has been introduced to many northern lakes and streams where it is a cause for concern. Ru ...
On the Links Between Managerial Actions, Keystone Species
... A standard textbook in ecology tells us that a “role may be occupied by a single species, and the presence of that role may be critical to the community. Such important species are called keystone species because their activities determine community structure” (Krebs, 1994, p. 554, italics in origin ...
... A standard textbook in ecology tells us that a “role may be occupied by a single species, and the presence of that role may be critical to the community. Such important species are called keystone species because their activities determine community structure” (Krebs, 1994, p. 554, italics in origin ...
atlas of the honeydew producing conifer aphids of
... information on those forest aphid species which feed on conifers and are known to produce much more and better honeydew than others. In fact, that aphid honeydew is more searched and appreciated by bees and beekeepers for the “forest–honey” or “honeydew–honey” production. This book achieved with the ...
... information on those forest aphid species which feed on conifers and are known to produce much more and better honeydew than others. In fact, that aphid honeydew is more searched and appreciated by bees and beekeepers for the “forest–honey” or “honeydew–honey” production. This book achieved with the ...
5 THE ECOLOGICAL NICHES OF LEPTOSPERMUM SCOPAR/UM
... in many parts of New Zealand. The fundamental niche of L. ericoides seems to be narrower than that of L. scoparium in several respects because it is unable to inhabit some of the habitats available to them both. Various differences between the two species are summarized in Table 1. One would expect ...
... in many parts of New Zealand. The fundamental niche of L. ericoides seems to be narrower than that of L. scoparium in several respects because it is unable to inhabit some of the habitats available to them both. Various differences between the two species are summarized in Table 1. One would expect ...
The measure of order and disorder in the distribution of species in
... et al. 1991; Soul6 et al. 1992; Wright and Reeves 1992; among others). The thesis for ordered extinctions is simple: an area of suitable habitats, initially inhabited by a common ancestral biota, is fragmented into an archipelago of islands by climatic change. On each island of an archipelago, there ...
... et al. 1991; Soul6 et al. 1992; Wright and Reeves 1992; among others). The thesis for ordered extinctions is simple: an area of suitable habitats, initially inhabited by a common ancestral biota, is fragmented into an archipelago of islands by climatic change. On each island of an archipelago, there ...
![arXiv:q-bio/0504020v1 [q-bio.PE] 16 Apr 2005](http://s1.studyres.com/store/data/016274523_1-eadb1fa1870c75ac16e4c5225bb2f5b2-300x300.png)
arXiv:q-bio/0504020v1 [q-bio.PE] 16 Apr 2005
... is randomly selected and made extinct. Then, any species in the next higher level for which all prey species became extinct are also made extinct; this procedure is repeated for all the levels upto the highest one. Although this may be a more realistic description of inter-species interactions than ...
... is randomly selected and made extinct. Then, any species in the next higher level for which all prey species became extinct are also made extinct; this procedure is repeated for all the levels upto the highest one. Although this may be a more realistic description of inter-species interactions than ...
Year 7: Where do flying-foxes fit in?
... This work is licensed under the Creative Commons Attribution - Noncommercial - Share Alike 3.0 Australia License. This licence allows for distribution, remixing and building upon the work, but only if it is for non-commercial purposes, the original creator/s (and any other nominated parties) are cre ...
... This work is licensed under the Creative Commons Attribution - Noncommercial - Share Alike 3.0 Australia License. This licence allows for distribution, remixing and building upon the work, but only if it is for non-commercial purposes, the original creator/s (and any other nominated parties) are cre ...
Inclusion of facilitation into ecological theory
... relationship between the fundamental and realized niche as well as predictions of where a species can and will live in the physical world. Because the niche is a core principle, these changes cascade through the theoretical landscape of ecology. Originally defined by Grinell [7] and Elton [8], the i ...
... relationship between the fundamental and realized niche as well as predictions of where a species can and will live in the physical world. Because the niche is a core principle, these changes cascade through the theoretical landscape of ecology. Originally defined by Grinell [7] and Elton [8], the i ...
EPBC Act Protected Matters Report
... obligations under the Environment Protection and Biodiversity Conservation Act 1999. It holds mapped locations of World Heritage and Register of National Estate properties, Wetlands of International Importance, Commonwealth and State/Territory reserves, listed threatened, migratory and marine specie ...
... obligations under the Environment Protection and Biodiversity Conservation Act 1999. It holds mapped locations of World Heritage and Register of National Estate properties, Wetlands of International Importance, Commonwealth and State/Territory reserves, listed threatened, migratory and marine specie ...
Borneo`s New World
... skin on the arms and legs. Their evolution is seen as an adaptation to their life in trees, high above the ground. Such frogs are capable of making long, gliding leaps, sometimes 15 metres or more, to a neighbouring tree branch or even all the way to the ground. They also have oversized toe pads to ...
... skin on the arms and legs. Their evolution is seen as an adaptation to their life in trees, high above the ground. Such frogs are capable of making long, gliding leaps, sometimes 15 metres or more, to a neighbouring tree branch or even all the way to the ground. They also have oversized toe pads to ...
The Implications of Niche Construction and Ecosystem
... concept alone could lose sight of the importance of ecosystem engineers’ activities for ecosystem structure and function. It is true that in many ecosystems species of high trophic status impose, through predation, direct regulatory effects that are independent of engineering activity at lower troph ...
... concept alone could lose sight of the importance of ecosystem engineers’ activities for ecosystem structure and function. It is true that in many ecosystems species of high trophic status impose, through predation, direct regulatory effects that are independent of engineering activity at lower troph ...
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 ...
Inclusion of facilitation into ecological theory
... relationship between the fundamental and realized niche as well as predictions of where a species can and will live in the physical world. Because the niche is a core principle, these changes cascade through the theoretical landscape of ecology. Originally defined by Grinell [7] and Elton [8], the i ...
... relationship between the fundamental and realized niche as well as predictions of where a species can and will live in the physical world. Because the niche is a core principle, these changes cascade through the theoretical landscape of ecology. Originally defined by Grinell [7] and Elton [8], the i ...
Evidence for Sympatric Speciation by Host Shift
... has been reported in other fishes [17] for a comparable region of D-loop to that used here. The ecological and biogeographical data indicate that this new species might have evolved by a host shift in sympatry from the ancestral Gobiodon species A. First, for species in this clade, the ancestral pat ...
... has been reported in other fishes [17] for a comparable region of D-loop to that used here. The ecological and biogeographical data indicate that this new species might have evolved by a host shift in sympatry from the ancestral Gobiodon species A. First, for species in this clade, the ancestral pat ...
Coral Reefs of Japan
... localized threat to coral communities. The 1998 mass bleaching events have so far been the most wide-ranging disturbance for corals and coral reefs in Japan. Red soil runoff, derived from erosion of terrestrial development sites, causes continuous environmental pollution. Many local coral communitie ...
... localized threat to coral communities. The 1998 mass bleaching events have so far been the most wide-ranging disturbance for corals and coral reefs in Japan. Red soil runoff, derived from erosion of terrestrial development sites, causes continuous environmental pollution. Many local coral communitie ...
Threatened Species Assessment Guidelines
... need to be considered when assessing whether an action, development or activity is likely to significantly affect threatened species, populations or ecological communities, or their habitats, previously known as the ‘8-part test.’ The changes affect s. 5A EP&A Act, s. 94 Threatened Species Conservat ...
... need to be considered when assessing whether an action, development or activity is likely to significantly affect threatened species, populations or ecological communities, or their habitats, previously known as the ‘8-part test.’ The changes affect s. 5A EP&A Act, s. 94 Threatened Species Conservat ...
Regional adaptation improves the performance of grassland plant
... their environment as demonstrated by reciprocal transplant experiments (Leimu & Fischer 2008). An advantage of local or regional plants and seeds mainly results from adaptation to factors such as climate, soil or land use (Macel et al. 2007; Raabova, Muenzbergova, & Fischer 2007). If plant species w ...
... their environment as demonstrated by reciprocal transplant experiments (Leimu & Fischer 2008). An advantage of local or regional plants and seeds mainly results from adaptation to factors such as climate, soil or land use (Macel et al. 2007; Raabova, Muenzbergova, & Fischer 2007). If plant species w ...
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.