Rethinking patch size and isolation effects: the habitat amount
... scape will decline with the total remaining area of that habitat type in the landscape (Fig. 4), irrespective of the individual sizes of the remaining patches. As stated by Helliwell (1976), ‘[o]bviously there will be a better chance of finding almost any species in a sample of larger size, whether ...
... scape will decline with the total remaining area of that habitat type in the landscape (Fig. 4), irrespective of the individual sizes of the remaining patches. As stated by Helliwell (1976), ‘[o]bviously there will be a better chance of finding almost any species in a sample of larger size, whether ...
the role of competition in structuring ant communities: a review
... competition, which predicted that two species can not occupy the same niche or coexist unless there is some divergence in resource use (Schoener 1982). During this period, many entomologists have reported how insects differ in the niches and habitats, and argued that competition is the cause for suc ...
... competition, which predicted that two species can not occupy the same niche or coexist unless there is some divergence in resource use (Schoener 1982). During this period, many entomologists have reported how insects differ in the niches and habitats, and argued that competition is the cause for suc ...
Seasonal dietary differences of the Yellow
... same in summer (Brusca & Findley, 2005). Consequently, vertebrates inhabiting these islands that consume marine organisms, such as the Yellow-footed Gull, may be affected by variations in the type and abundance of marine resources related to seasonal changes in oceanographic conditions (García-Rodrí ...
... same in summer (Brusca & Findley, 2005). Consequently, vertebrates inhabiting these islands that consume marine organisms, such as the Yellow-footed Gull, may be affected by variations in the type and abundance of marine resources related to seasonal changes in oceanographic conditions (García-Rodrí ...
Adaptive Radiation - the ant life
... well-known vertebrate radiations include lizards (anoles) in the Greater Antilles of the Caribbean in which diversification has allowed species to occupy a range of ecological roles, with as many as 11 species occurring sympatrically. Different species live, for example, on twigs, in the grass, or o ...
... well-known vertebrate radiations include lizards (anoles) in the Greater Antilles of the Caribbean in which diversification has allowed species to occupy a range of ecological roles, with as many as 11 species occurring sympatrically. Different species live, for example, on twigs, in the grass, or o ...
Mid-Atlantic/Southern New England BCR Plan
... of these systems to all waterbirds. Many bird species within the BCR depend heavily on remaining expanses and patches of forested upland communities in the BCR to support them; these communities have also undergone great changes as a result of urbanization, forestry, and agriculture. Historically, t ...
... of these systems to all waterbirds. Many bird species within the BCR depend heavily on remaining expanses and patches of forested upland communities in the BCR to support them; these communities have also undergone great changes as a result of urbanization, forestry, and agriculture. Historically, t ...
Document
... 3 extinction of native species. Here we investigate competitive interactions and parasite infections 4 in the native Austropotamobius pallipes and the invasive Pacifastacus leniusculus from single 5 and mixed species populations in the UK. We found A. pallipes individuals to be significantly 6 small ...
... 3 extinction of native species. Here we investigate competitive interactions and parasite infections 4 in the native Austropotamobius pallipes and the invasive Pacifastacus leniusculus from single 5 and mixed species populations in the UK. We found A. pallipes individuals to be significantly 6 small ...
Coprophilic dipteran community associated with horse
... springtails (one family), beetles (four families), mites (three families), centipedes (one order), ants and spider (one family). However, no earthworm was collected. A butterfly (Lepidoptera: Lycanidae) was also observed to frequent on dung surface. Table 2 listed the families of non-Diptera taxa as ...
... springtails (one family), beetles (four families), mites (three families), centipedes (one order), ants and spider (one family). However, no earthworm was collected. A butterfly (Lepidoptera: Lycanidae) was also observed to frequent on dung surface. Table 2 listed the families of non-Diptera taxa as ...
Mechanical vulnerability explains sizedependent mortality of reef
... communities have important ecological and evolutionary implications. Within-community variation in such traits, such as the age- or size-dependence of vital rates, influences community structure and dynamics (McGill et al. 2006; Litchman & Klausmeier 2008). However, separately estimating the demogra ...
... communities have important ecological and evolutionary implications. Within-community variation in such traits, such as the age- or size-dependence of vital rates, influences community structure and dynamics (McGill et al. 2006; Litchman & Klausmeier 2008). However, separately estimating the demogra ...
Invasion in a heterogeneous world: resistance, coexistence or
... single species in a heterogeneous environment or to a homogeneous environment for more than one species. In other words, theory for the spread phase largely ignores the fact that invasive species do not spread through a pristine homogeneous landscape, but instead spread through native metacommunitie ...
... single species in a heterogeneous environment or to a homogeneous environment for more than one species. In other words, theory for the spread phase largely ignores the fact that invasive species do not spread through a pristine homogeneous landscape, but instead spread through native metacommunitie ...
Management of pest animals (Policy 12)
... The number of known pest animals in Western Australia has been steadily increasing since European settlement. There are over 80 species of introduced vertebrate pest animals in Australia including 24 mammals, 26 birds, six reptiles and 31 fish species, and many of these are also found in Western Aus ...
... The number of known pest animals in Western Australia has been steadily increasing since European settlement. There are over 80 species of introduced vertebrate pest animals in Australia including 24 mammals, 26 birds, six reptiles and 31 fish species, and many of these are also found in Western Aus ...
Understanding the Invasion Ecology of Exotic Crayfish in California
... made into the world’s largest crawfish etouffee and served piping hot to whoever would eat it. The Louisiana red swamp crayfish–yes, the same one that is a centerpiece of Cajun cuisine–is a pest species here in the Golden State, unwanted because it is elbowing out native crayfish, snails, salamander ...
... made into the world’s largest crawfish etouffee and served piping hot to whoever would eat it. The Louisiana red swamp crayfish–yes, the same one that is a centerpiece of Cajun cuisine–is a pest species here in the Golden State, unwanted because it is elbowing out native crayfish, snails, salamander ...
On the Status of Vermin - DigitalCommons@CalPoly
... the disease. The disease in this case is the unbalanced ecosystem caused by the lack of predation on prairie dogs. The symptom is too many prairie dogs. If we want to limit the prairie dog population, we can attempt to eradicate them, but chances are they will be back. Or we can re-introduce predato ...
... the disease. The disease in this case is the unbalanced ecosystem caused by the lack of predation on prairie dogs. The symptom is too many prairie dogs. If we want to limit the prairie dog population, we can attempt to eradicate them, but chances are they will be back. Or we can re-introduce predato ...
Ragnar Arnason*
... kind is referred to as a production externality. While it's easy to think of situations where ...
... kind is referred to as a production externality. While it's easy to think of situations where ...
Upland and Wetland Prairies in the Midwest and West Coast
... nitrophilic, whereas native prairie plants are not. Christian and Wilson (1999) found that fields dominated by the non-native grass Agropyron cristatum had lower plant diversity and root mass which may have led to less carbon in the soil than native undisturbed prairies. Non-natives may also reduce ...
... nitrophilic, whereas native prairie plants are not. Christian and Wilson (1999) found that fields dominated by the non-native grass Agropyron cristatum had lower plant diversity and root mass which may have led to less carbon in the soil than native undisturbed prairies. Non-natives may also reduce ...
Seed Germination and Seedling Survival of two endemic (Eryngium
... establishment of five listed scrub endemic plant species. Work accomplished: We have summarized our results (below), and interpreted our data in order to make recommendations for restoration efforts. Our data indicates that for the six herbs species addressed in this study (4 listed, 2 widespread na ...
... establishment of five listed scrub endemic plant species. Work accomplished: We have summarized our results (below), and interpreted our data in order to make recommendations for restoration efforts. Our data indicates that for the six herbs species addressed in this study (4 listed, 2 widespread na ...
Models, Mechanisms and Pathways of Succession
... The study of succession has been hampered by the lack of a general theory.This is illustratedby confusionover basicconceptsand inadequacy of certainmodels. This review clarifiesthe basic ideas of pathway,mechanism, and model in succession.Second,in orderto preventinappropriate narrownessin successio ...
... The study of succession has been hampered by the lack of a general theory.This is illustratedby confusionover basicconceptsand inadequacy of certainmodels. This review clarifiesthe basic ideas of pathway,mechanism, and model in succession.Second,in orderto preventinappropriate narrownessin successio ...
doc Term Paper Handout
... become nuisance species. Some nuisance fish species may affect mostly plants (or humans), with no strong effects on other specific animals. OVERALL PAPER OBJECTIVES Why is a particular, introduced freshwater fish ‘successful’ as an invasive species? Why and how (ecologically) does it impact on the p ...
... become nuisance species. Some nuisance fish species may affect mostly plants (or humans), with no strong effects on other specific animals. OVERALL PAPER OBJECTIVES Why is a particular, introduced freshwater fish ‘successful’ as an invasive species? Why and how (ecologically) does it impact on the p ...
SER2015 POSTER SESSIONS
... failed to detect an interaction between these two factors. Planted seedlings probably have a better starting point to form deep roots and compete with weeds, and species with larger seeds use seed reserves to get higher initial performance. However, differences in the survival of plants introduced a ...
... failed to detect an interaction between these two factors. Planted seedlings probably have a better starting point to form deep roots and compete with weeds, and species with larger seeds use seed reserves to get higher initial performance. However, differences in the survival of plants introduced a ...
Table of Contents - New England Conference Company
... High efficiency woody weed control in Western Sydney The NCC Firesticks Project: applying Aboriginal knowledge, science and integrated fire, weed and pest species management to restore and maintain biodiversity, habitat connectivity and landscape resilience Climate-ready revegetation: a guide for na ...
... High efficiency woody weed control in Western Sydney The NCC Firesticks Project: applying Aboriginal knowledge, science and integrated fire, weed and pest species management to restore and maintain biodiversity, habitat connectivity and landscape resilience Climate-ready revegetation: a guide for na ...
Ecological Mechanisms Underlying Arthropod Species Further
... Understanding patterns of arthropod species diversity worldwide is a grand challenge. A hierarchical approach is required to determine how ecological processes filter regional species pools, resulting from historical and biogeographic processes, to shape local species composition and diversity (41, 9 ...
... Understanding patterns of arthropod species diversity worldwide is a grand challenge. A hierarchical approach is required to determine how ecological processes filter regional species pools, resulting from historical and biogeographic processes, to shape local species composition and diversity (41, 9 ...
Chapter 53 communities
... Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings ...
... Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings ...
Behavioral Interactions Among Four Species of the Salamander
... Abstract. Four sympatric species: Desmognathus quadramaculatus, D. monticola, D. fuscus, and D. ochrophaeus, showed different substrate preferences in experimental trials. In addition, the choices of substrates and of cover objects were influenced by the presence of other salamanders. Significant di ...
... Abstract. Four sympatric species: Desmognathus quadramaculatus, D. monticola, D. fuscus, and D. ochrophaeus, showed different substrate preferences in experimental trials. In addition, the choices of substrates and of cover objects were influenced by the presence of other salamanders. Significant di ...
Rare migration vs. Regular Migration
... genetic equilibrium or tend towards fixation of one of the alleles • With regular migration events the movement of alleles from one population to another causes the separate populations to act collectively: what happens to the allele frequency in one population happens to the allele frequency in all ...
... genetic equilibrium or tend towards fixation of one of the alleles • With regular migration events the movement of alleles from one population to another causes the separate populations to act collectively: what happens to the allele frequency in one population happens to the allele frequency in all ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.