Risk analysis of the fox squirrel Sciurus niger
... because appropriate climatic conditions, habitats and food resources are encountered. ...
... because appropriate climatic conditions, habitats and food resources are encountered. ...
Using Natural Range of Variation to Set Decision Thresholds: A
... long life span of the tree species and communities that they were investigating, as well as the somewhat anomalous climate conditions of the 1770–1850 period (Cyr et al. 2009). Other issues to consider when choosing specific locations from which to gather NRV information include the location’s histo ...
... long life span of the tree species and communities that they were investigating, as well as the somewhat anomalous climate conditions of the 1770–1850 period (Cyr et al. 2009). Other issues to consider when choosing specific locations from which to gather NRV information include the location’s histo ...
rabbit action plan background paper
... associated management of threatening processes across Victoria. Under the FFG Act, pest animal species can be listed as a threatening process to flora or fauna values. Several species listed as threatened under this legislation are present within Hume (Table 2). Threatening processes under the Act p ...
... associated management of threatening processes across Victoria. Under the FFG Act, pest animal species can be listed as a threatening process to flora or fauna values. Several species listed as threatened under this legislation are present within Hume (Table 2). Threatening processes under the Act p ...
Scorpiones (Scorpions) - American Museum of Natural History
... heavier, including Opistophthalmus gigas, 6.3 in (16 cm); Heterometrus swammerdami, 6.6 in (16.8 cm); and Pandinus imperator, 7.1 to 7.9 in (18 to 20 cm). Although these scorpions are the world’s largest living arachnids, some fossil species were an order of magnitude larger. For example, Brontoscor ...
... heavier, including Opistophthalmus gigas, 6.3 in (16 cm); Heterometrus swammerdami, 6.6 in (16.8 cm); and Pandinus imperator, 7.1 to 7.9 in (18 to 20 cm). Although these scorpions are the world’s largest living arachnids, some fossil species were an order of magnitude larger. For example, Brontoscor ...
Biodiversity and Climate Change: Integrating Evolutionary and
... that rapid evolution should be defined as genetic changes occurring fast enough to have a measurable impact on simultaneous ecological change. There is accumulating empirical evidence that evolution can proceed fast (Gingerich 2009, Reznick & Ghalambor 2001) and, more importantly, that the selective ...
... that rapid evolution should be defined as genetic changes occurring fast enough to have a measurable impact on simultaneous ecological change. There is accumulating empirical evidence that evolution can proceed fast (Gingerich 2009, Reznick & Ghalambor 2001) and, more importantly, that the selective ...
Report Specialization, Constraints, and Conflicting Interests in
... if they attack only a few prey species, and specialized flowers are those that are visited by few pollinator species only. This concept has been extended to measure the degree of specialization of entire networks (‘‘connectance’’), where associations are classified as ‘‘present’’ or ‘‘absent,’’ but ...
... if they attack only a few prey species, and specialized flowers are those that are visited by few pollinator species only. This concept has been extended to measure the degree of specialization of entire networks (‘‘connectance’’), where associations are classified as ‘‘present’’ or ‘‘absent,’’ but ...
Prosimians in U.S. Ex-Situ Institutions: the Duke Lemur Center as an
... The reader is presented with some of the taxonomy, habitat, feeding, behavior, reproduction, and conservation information for the species needed to understand the peculiarities of this suborder of primates. Also the best practices for their maintenance in captivity are analyzed and the regulations a ...
... The reader is presented with some of the taxonomy, habitat, feeding, behavior, reproduction, and conservation information for the species needed to understand the peculiarities of this suborder of primates. Also the best practices for their maintenance in captivity are analyzed and the regulations a ...
Measuring Biological Diversity
... For many ecosystems, high evenness is a sign of ecosystem health ...
... For many ecosystems, high evenness is a sign of ecosystem health ...
Scaling environmental change through the community
... disturbance or CO2) and functional effect groups (species that exert similar effects on one or several ecosystem functions). While the distinction between response and effect has been used to describe competitive dynamics for some time, both phenomenologically (Goldberg & Werner, 1983) and for funct ...
... disturbance or CO2) and functional effect groups (species that exert similar effects on one or several ecosystem functions). While the distinction between response and effect has been used to describe competitive dynamics for some time, both phenomenologically (Goldberg & Werner, 1983) and for funct ...
PestSmart Report Template
... quolls) from such toxic baits; baiting programs may need to be sustained for many years, and in many places need to also consider integration with control of foxes; reduction in cat numbers may have unwanted consequences (increases in other pest species, such as rabbits or introduced rodents); contr ...
... quolls) from such toxic baits; baiting programs may need to be sustained for many years, and in many places need to also consider integration with control of foxes; reduction in cat numbers may have unwanted consequences (increases in other pest species, such as rabbits or introduced rodents); contr ...
STM_Eucalyptus porosa woodland eastern flanks final.docx
... According to the Atlas of South Australia, the area has the following 2 soil types: Hard red duplex soils are probably the most important agricultural soils in the State. Their extent approximately defined the limits of the wheat belt in the nineteenth century. The subsurface soil consists of hard-s ...
... According to the Atlas of South Australia, the area has the following 2 soil types: Hard red duplex soils are probably the most important agricultural soils in the State. Their extent approximately defined the limits of the wheat belt in the nineteenth century. The subsurface soil consists of hard-s ...
Introduction to Natural Heritage
... and albacore tuna. Particularly relates to more recent bird arrivals and marine animals and plants. o Exotic: introduced species – many are ecological pests, but not always. Many exotic species are benign and inhabit urban or agricultural landscapes within which native species find it difficult to s ...
... and albacore tuna. Particularly relates to more recent bird arrivals and marine animals and plants. o Exotic: introduced species – many are ecological pests, but not always. Many exotic species are benign and inhabit urban or agricultural landscapes within which native species find it difficult to s ...
community
... • The competitive exclusion principle states that two species competing for the same limiting resources cannot coexist in the same place – One species will be more efficient and thus reproduce more rapidly than the other. This will eventually lead to the local elimination of the inferior competitor. ...
... • The competitive exclusion principle states that two species competing for the same limiting resources cannot coexist in the same place – One species will be more efficient and thus reproduce more rapidly than the other. This will eventually lead to the local elimination of the inferior competitor. ...
community
... • The competitive exclusion principle states that two species competing for the same limiting resources cannot coexist in the same place – One species will be more efficient and thus reproduce more rapidly than the other. This will eventually lead to the local elimination of the inferior competitor. ...
... • The competitive exclusion principle states that two species competing for the same limiting resources cannot coexist in the same place – One species will be more efficient and thus reproduce more rapidly than the other. This will eventually lead to the local elimination of the inferior competitor. ...
relative effects of species composition and richness on ecosystem
... effect in an ecosystem. Species composition (i.e., the particular identity or assemblage of species) is another important and often confounding component of biodiversity that is more difficult to study. Most biodiversity research has not adequately separated composition effects from richness effects ...
... effect in an ecosystem. Species composition (i.e., the particular identity or assemblage of species) is another important and often confounding component of biodiversity that is more difficult to study. Most biodiversity research has not adequately separated composition effects from richness effects ...
Biogeography and Zoogeography
... Island Rule Rapoport’s Rule Bergmann’s Rule Allen’s Rule Gloger’s Rule Other Patterns – Latitudinal and Elevation Gradients ...
... Island Rule Rapoport’s Rule Bergmann’s Rule Allen’s Rule Gloger’s Rule Other Patterns – Latitudinal and Elevation Gradients ...
Landscape composition influences patterns of native and exotic lady
... Landscape influences lady beetle abundance Tscharntke et al., 2005; Marino et al., 2006; Gardiner et al., 2009). Landscapes supply both native and exotic species to agricultural ecosystems resulting in agricultural food webs containing introduced species at each trophic level. Although habitat loss ...
... Landscape influences lady beetle abundance Tscharntke et al., 2005; Marino et al., 2006; Gardiner et al., 2009). Landscapes supply both native and exotic species to agricultural ecosystems resulting in agricultural food webs containing introduced species at each trophic level. Although habitat loss ...
Fish and Phytoplankton Exhibit Contrasting Temporal Species
... these two assemblages? Phytoplankton have short generation times (hours to weeks); high levels of dispersal via air, wind, water, animal vectors, and from dormant life stages in sediments; and can respond very quickly to perturbations [34]. In addition, phytoplankton represent a particularly interes ...
... these two assemblages? Phytoplankton have short generation times (hours to weeks); high levels of dispersal via air, wind, water, animal vectors, and from dormant life stages in sediments; and can respond very quickly to perturbations [34]. In addition, phytoplankton represent a particularly interes ...
Rangeland degradation in Ordos Plateau, its nature and assessment
... the regions in the same latitude, primarily because of the frequent fluctuation of climate and the heavier grazing pressure, combined with the exploring for fuelwood and pharmaceutical plants and the conversion to farmland. Desert steppe in the area was examined for effects of hundreds years of live ...
... the regions in the same latitude, primarily because of the frequent fluctuation of climate and the heavier grazing pressure, combined with the exploring for fuelwood and pharmaceutical plants and the conversion to farmland. Desert steppe in the area was examined for effects of hundreds years of live ...
Temperate rocky subtidal reef community reveals human impacts
... subtidal reefs of the open, wave-exposed coast of central Chile, between Coquimbo (30º S) and Las Cruces (33º S). All species in our network were either previously documented or directly observed to co-occur in kelp bed and hard-bottom wave-exposed habitats, including horizontal platforms, boulders ...
... subtidal reefs of the open, wave-exposed coast of central Chile, between Coquimbo (30º S) and Las Cruces (33º S). All species in our network were either previously documented or directly observed to co-occur in kelp bed and hard-bottom wave-exposed habitats, including horizontal platforms, boulders ...
Assemblage and interaction structure of the anemonefish
... 2005), social interactions (Buston 2003; Mitchell and Dill 2005; Buston and Cant 2006), and breeding behaviour (Munday et al. 2006), in part because we have a relatively complete knowledge of the diversity of anemonefish and anemones and the extent of their interaction (Fautin and Allen 1997). In co ...
... 2005), social interactions (Buston 2003; Mitchell and Dill 2005; Buston and Cant 2006), and breeding behaviour (Munday et al. 2006), in part because we have a relatively complete knowledge of the diversity of anemonefish and anemones and the extent of their interaction (Fautin and Allen 1997). In co ...
book of abstracts as PDF
... The growing number of restoration projects worldwide leads to increasing demand for seeds of native plant species. These seeds are often collected from wild populations that thereby suffer increased risk of decreasing population size and eventually extinction. To minimize this risk, seed collection ...
... The growing number of restoration projects worldwide leads to increasing demand for seeds of native plant species. These seeds are often collected from wild populations that thereby suffer increased risk of decreasing population size and eventually extinction. To minimize this risk, seed collection ...
An African grassland responds similarly to long
... processes in the long-term, because traits of the initial dominants may be unrelated to the long-term outcome of competition [2]. Such priority effects can arise from a variety of factors, including changes in sward structure, litter levels and light availability [5]. One of the ways to minimize pri ...
... processes in the long-term, because traits of the initial dominants may be unrelated to the long-term outcome of competition [2]. Such priority effects can arise from a variety of factors, including changes in sward structure, litter levels and light availability [5]. One of the ways to minimize pri ...
A new formulation for determination of the competition coefficient in
... Interspecific Niche overlap (denoted by ij) – There will be competition between any two species, given that there is an overlap between their niche volume () in Kdimensional space (given there are K resources), where each of the dimensions represents a niche parameter, i.e. a resource in this case ...
... Interspecific Niche overlap (denoted by ij) – There will be competition between any two species, given that there is an overlap between their niche volume () in Kdimensional space (given there are K resources), where each of the dimensions represents a niche parameter, i.e. a resource in this case ...
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.