Eutrophication causes speciation reversal in whitefish adaptive
... Effectively counteracting the biodiversity crisis requires identifying and protecting the ecological and evolutionary processes that generate and maintain diversity1,2. Species can go extinct through two distinct but potentially interacting processes. In the first, demographic decline results in pop ...
... Effectively counteracting the biodiversity crisis requires identifying and protecting the ecological and evolutionary processes that generate and maintain diversity1,2. Species can go extinct through two distinct but potentially interacting processes. In the first, demographic decline results in pop ...
Peace Basin Species of Interest Action Plan
... Although not studied specifically in the Peace Basin, the species most affected by inundation in the Columbia Basin were those dependent on wetland and riparian habitats such as amphibians, water birds, waders, songbirds, aerial insectivorous birds and bats (Utzig and Schmidt 2011). Impacts in the P ...
... Although not studied specifically in the Peace Basin, the species most affected by inundation in the Columbia Basin were those dependent on wetland and riparian habitats such as amphibians, water birds, waders, songbirds, aerial insectivorous birds and bats (Utzig and Schmidt 2011). Impacts in the P ...
Ranchers as a Keystone Species in a West That Works By Richard L
... important. The private lands are disproportionately important to the maintenance of our region’s natural heritage because they are disproportionately more productive. Although no one has calculated the ratio, private lands may be an order of magnitude more important to the maintenance of the region ...
... important. The private lands are disproportionately important to the maintenance of our region’s natural heritage because they are disproportionately more productive. Although no one has calculated the ratio, private lands may be an order of magnitude more important to the maintenance of the region ...
Advective supply and loss of
... Advection: supply/loss to GOM Questions • How long will animals in the deep GOM waters remain in the GOM, i.e. what is the residence time of the deep water? • To what extent does the deep-water flow move the basin populations to other basins? • Do some basins retain diapausers more efficiently than ...
... Advection: supply/loss to GOM Questions • How long will animals in the deep GOM waters remain in the GOM, i.e. what is the residence time of the deep water? • To what extent does the deep-water flow move the basin populations to other basins? • Do some basins retain diapausers more efficiently than ...
4 Hierarchical competition in a pond-breeding anuran
... cultripes, Bufo bufo, Bufo calamita, Hyla meridionalis and Rana perezi). For the present study only 6 anuran species were chosen from the 7 species detected in the region. We excluded Pelobates because it is rare in the study area. This zone has a typical Mediterranean climate with hot, dry summers, ...
... cultripes, Bufo bufo, Bufo calamita, Hyla meridionalis and Rana perezi). For the present study only 6 anuran species were chosen from the 7 species detected in the region. We excluded Pelobates because it is rare in the study area. This zone has a typical Mediterranean climate with hot, dry summers, ...
A boreal invasion in response to climate change? Range shifts and
... In the second part of the review, we focused on northern and southern mammals, as well as bird species that interact strongly with these mammals. From a functional perspective, these bird species belong to the same wildlife community as the mammals, and we present the results with all species groupe ...
... In the second part of the review, we focused on northern and southern mammals, as well as bird species that interact strongly with these mammals. From a functional perspective, these bird species belong to the same wildlife community as the mammals, and we present the results with all species groupe ...
Q repeat 9 interval amino acid forms in man and pathogen
... As I observe “interval repeats” to occur in other lesser and greater lengths, I find it compelling that the 11 region assay is found among man’s critical tissues of brain stem, bone marrow and hepatic sites...with amino characters and the repeats among the pathogens that mirror length. Exploring th ...
... As I observe “interval repeats” to occur in other lesser and greater lengths, I find it compelling that the 11 region assay is found among man’s critical tissues of brain stem, bone marrow and hepatic sites...with amino characters and the repeats among the pathogens that mirror length. Exploring th ...
Plant species traits and capacity for resource reduction predict yield
... be useful to develop proxy measures for R* that do not necessarily require the establishment of equilibrial field monocultures and that are more easily sampled than soil nitrate, which is notoriously variable in space and time (Robertson et al. 1988; Robertson & Gross 1994, Cain et al. 1999; Hook & ...
... be useful to develop proxy measures for R* that do not necessarily require the establishment of equilibrial field monocultures and that are more easily sampled than soil nitrate, which is notoriously variable in space and time (Robertson et al. 1988; Robertson & Gross 1994, Cain et al. 1999; Hook & ...
Macrotis lagotis, Bilby
... appears to have become extinct in New South Wales and southern South Australia around the 1940s (Copley et al. 2003) or more likely, from Aboriginal knowledge, at least the 1950s (P. Copley pers. comm.). It disappeared from the Flinders Ranges in the 1920s (Tunbridge 1991) and from northern South Au ...
... appears to have become extinct in New South Wales and southern South Australia around the 1940s (Copley et al. 2003) or more likely, from Aboriginal knowledge, at least the 1950s (P. Copley pers. comm.). It disappeared from the Flinders Ranges in the 1920s (Tunbridge 1991) and from northern South Au ...
Book Review of, Principles of terrestrial ecosystem ecology.
... nutritional constraint for animals than is generally recognized.’’ The reader could be helped by some indication of the confidence we should have in these concepts, where they are not supported by references. For example, what is the evidence that amine groups bind organic matter to clay or that min ...
... nutritional constraint for animals than is generally recognized.’’ The reader could be helped by some indication of the confidence we should have in these concepts, where they are not supported by references. For example, what is the evidence that amine groups bind organic matter to clay or that min ...
Full Text - Digital Access to Scholarship at Harvard
... There are many factors that influence species richness [2]. For example, island biogeography theory suggests that, all else equal, communities that encompass a large area are also more likely to receive immigrants that introduce new species restore species lost to stochastic extinction; this is espe ...
... There are many factors that influence species richness [2]. For example, island biogeography theory suggests that, all else equal, communities that encompass a large area are also more likely to receive immigrants that introduce new species restore species lost to stochastic extinction; this is espe ...
pptx
... “If some mechanism promotes the coexistence of two or more species, each species must be able to increase when it is rare and the others are at their typical abundances; this invasibility criterion is fundamental evidence for species coexistence regardless of the mechanism.” “some subset of the co-o ...
... “If some mechanism promotes the coexistence of two or more species, each species must be able to increase when it is rare and the others are at their typical abundances; this invasibility criterion is fundamental evidence for species coexistence regardless of the mechanism.” “some subset of the co-o ...
Practice Test One Key
... The best way to approach this question is to first calculate R* for each species for each case (see last line of table above). This allows you to narrow down choices for each case based on the competition winner (just based on R*, Cases 1 and 2 could be B or C, and Cases 3 and 4 could be A or D). Th ...
... The best way to approach this question is to first calculate R* for each species for each case (see last line of table above). This allows you to narrow down choices for each case based on the competition winner (just based on R*, Cases 1 and 2 could be B or C, and Cases 3 and 4 could be A or D). Th ...
Definitions of Biodiversity and Measures of Its Value
... invariant unit of diversity, Simpson et al. (1996) calibrate a simple model of search to pharmaceutical industry data in deriving the value of the “marginal species” with respect to its contribution to new product development (see also Rausser and Small 2000). In a sense, such search models are the ...
... invariant unit of diversity, Simpson et al. (1996) calibrate a simple model of search to pharmaceutical industry data in deriving the value of the “marginal species” with respect to its contribution to new product development (see also Rausser and Small 2000). In a sense, such search models are the ...
Direct and indirect community effects of rebuilding plans
... community version is based on the same equations as the singlespecies model, but growth is determined by the availability of food from smaller individuals or from zooplankton, whereas a substantial part of the non-fishing mortality depends on the consumption by predators. The community model is esse ...
... community version is based on the same equations as the singlespecies model, but growth is determined by the availability of food from smaller individuals or from zooplankton, whereas a substantial part of the non-fishing mortality depends on the consumption by predators. The community model is esse ...
Document
... Invasive species are a known and growing threat to native ecosystems and the services they provide, and it is widely accepted that human activities contribute substantially to their spread. In a study of fifty-two north Mississippi wetlands, approximately 10% of the vascular plant species encountere ...
... Invasive species are a known and growing threat to native ecosystems and the services they provide, and it is widely accepted that human activities contribute substantially to their spread. In a study of fifty-two north Mississippi wetlands, approximately 10% of the vascular plant species encountere ...
Population density of North American elk
... their environments. High-levels of herbivory, from populations of large herbivores at or near K, often lead to declines in plant species diversity and loss of highly palatable species from the plant community (Olff and Ritchie 1998; Rooney 2001; Vellend 2004; McShea 2005; Nicholson et al. 2006). Ind ...
... their environments. High-levels of herbivory, from populations of large herbivores at or near K, often lead to declines in plant species diversity and loss of highly palatable species from the plant community (Olff and Ritchie 1998; Rooney 2001; Vellend 2004; McShea 2005; Nicholson et al. 2006). Ind ...
5-2 Limits to growth
... reaches a certain level. These factors operate most strongly when a population is large and dense. They do not affect small, scattered populations as greatly. ...
... reaches a certain level. These factors operate most strongly when a population is large and dense. They do not affect small, scattered populations as greatly. ...
Threatened Species - Environment, Planning and Sustainable
... The major conservation objective of this Action Plan is to maintain in the long term, viable, wild populations of Delma impar as a component of the indigenous biological resources of the ACT and as a contribution to regional and national conservation of the species (ACT Government 1994). This is int ...
... The major conservation objective of this Action Plan is to maintain in the long term, viable, wild populations of Delma impar as a component of the indigenous biological resources of the ACT and as a contribution to regional and national conservation of the species (ACT Government 1994). This is int ...
Common Wall Lizard (Podarcis muralis) - GB non
... scientific certainty before taking action. To determine the evidence base and manage uncertainty a process of risk analysis is used. Risk analysis comprises three component parts: risk assessment (determining the severity and likelihood of a hazard occurring); risk management (the practicalities of ...
... scientific certainty before taking action. To determine the evidence base and manage uncertainty a process of risk analysis is used. Risk analysis comprises three component parts: risk assessment (determining the severity and likelihood of a hazard occurring); risk management (the practicalities of ...
conservation and use of wild ungulates in central asia – potentials
... bocharensis) and the Karatau argali (Ovis ammon nigrimontana) are under acute threat of extinction. The other subspecies’ populations are reported to subsist at a stable but low level at best, or rapidly declining in the worst case. ...
... bocharensis) and the Karatau argali (Ovis ammon nigrimontana) are under acute threat of extinction. The other subspecies’ populations are reported to subsist at a stable but low level at best, or rapidly declining in the worst case. ...
TEST GUIDE
... consequence of the fact that natural selection acts on the phenotype of an individual rather than on its genotype? ...
... consequence of the fact that natural selection acts on the phenotype of an individual rather than on its genotype? ...
Microsoft Word - Lab05WalrusesWhalesWeasels
... whales, dolphins, walruses, manatees, and sea otters) and their potential ancestral relationship to land mammals. We will use a protein that all mammals share: the hemoglobin beta protein. Hemoglobin is a good test molecule since it shows both conservation across species (since it performs the essen ...
... whales, dolphins, walruses, manatees, and sea otters) and their potential ancestral relationship to land mammals. We will use a protein that all mammals share: the hemoglobin beta protein. Hemoglobin is a good test molecule since it shows both conservation across species (since it performs the essen ...