Wulff 2005l - FSU Biology
... Pelicans to Twin Cays and no individuals increased in size, so they were not included in the analysis. The other four species tolerated the boat ride well, as illustrated by similar survival without net decrease of controls on home roots in the Pelicans and transplants to pvc pipes at Twin Cays (53· ...
... Pelicans to Twin Cays and no individuals increased in size, so they were not included in the analysis. The other four species tolerated the boat ride well, as illustrated by similar survival without net decrease of controls on home roots in the Pelicans and transplants to pvc pipes at Twin Cays (53· ...
... However, composition and diversity often are correlated in both natural and managed ecosystems, making it difficult to unambiguously attribute effects to one or the other based on observational studies. To attribute effects to diversity requires comparison of sites that differ in diversity, but do n ...
Rangeland degradation in Ordos Plateau, its nature and assessment
... and electricity has been widely available for household energy for the last three de cades, a certain portion of the rural population in the Ordos region is still partly d ependent on firewood for cooking and heating due to traditional customs and lack of money. The plants used as firewood are mainl ...
... and electricity has been widely available for household energy for the last three de cades, a certain portion of the rural population in the Ordos region is still partly d ependent on firewood for cooking and heating due to traditional customs and lack of money. The plants used as firewood are mainl ...
Low biodiversity state persists two decades after cessation of nutrient enrichment
... All statistical tests were conducted in R 2.13.2 (www.r-project.org). To summarise temporal trends in plant species richness, plant species diversity and E. repens relative biomass, we fit loess regressions using the geom_smooth function in the ggplot2 package (Wickham 2010). To test for a hystereti ...
... All statistical tests were conducted in R 2.13.2 (www.r-project.org). To summarise temporal trends in plant species richness, plant species diversity and E. repens relative biomass, we fit loess regressions using the geom_smooth function in the ggplot2 package (Wickham 2010). To test for a hystereti ...
Dynamics of Blowfly Populations
... al. 2006; Serra et al. 2007). The deterministic approach employed to investigate the population dynamics of blowflies (Reis et al. 1996; Godoy et al. 1997, 2001) has revealed some interesting points, which show different patterns of dynamic behaviour. However, this dimension is not completely suitab ...
... al. 2006; Serra et al. 2007). The deterministic approach employed to investigate the population dynamics of blowflies (Reis et al. 1996; Godoy et al. 1997, 2001) has revealed some interesting points, which show different patterns of dynamic behaviour. However, this dimension is not completely suitab ...
Common Name: ETOWAH CRAYFISH Scientific Name: Cambarus
... main difference separating these two species is the almost parallel-sided rostrum of the Coosa crayfish versus the pinched and more anteriorly narrowed rostrum of the Etowah crayfish. Habitat: The Etowah crayfish is usually found beneath rocks in moderately to swiftly flowing areas of streams. It is ...
... main difference separating these two species is the almost parallel-sided rostrum of the Coosa crayfish versus the pinched and more anteriorly narrowed rostrum of the Etowah crayfish. Habitat: The Etowah crayfish is usually found beneath rocks in moderately to swiftly flowing areas of streams. It is ...
University of Washington
... Conservation biogeography of freshwater fishes Freshwater organisms, such as fishes, are subject to several biogeographic constraints that are unique to the aquatic realm. Their ability to move in response to environmental change is constrained by the dendritic arrangement of riverine ecosystems, a ...
... Conservation biogeography of freshwater fishes Freshwater organisms, such as fishes, are subject to several biogeographic constraints that are unique to the aquatic realm. Their ability to move in response to environmental change is constrained by the dendritic arrangement of riverine ecosystems, a ...
Responses of insect pests, pathogens, and invasive plant species to
... In northeastern North America, forests host a variety of native and introduced insect pests, invasive plant species, and pathogens (which we collectively term ‘‘nuisance species’’) that currently affect forest structure and function. While these species differ widely in their natural history and eco ...
... In northeastern North America, forests host a variety of native and introduced insect pests, invasive plant species, and pathogens (which we collectively term ‘‘nuisance species’’) that currently affect forest structure and function. While these species differ widely in their natural history and eco ...
Combined effects of salinity and temperature on survival and
... Artemia have been widely used as model organisms for biochemical, physiological, genetic and ecological studies with more than 5000 published papers (McCourt and Lavens, 1985). The differences in genetic constitution among Artemia species (Browne and Bowen, 1991; Pilla and Beardmore, 1994), as well ...
... Artemia have been widely used as model organisms for biochemical, physiological, genetic and ecological studies with more than 5000 published papers (McCourt and Lavens, 1985). The differences in genetic constitution among Artemia species (Browne and Bowen, 1991; Pilla and Beardmore, 1994), as well ...
Predictable evolution toward flightlessness in volant
... reflecting evolution toward a generalist niche in species-poor communities (4–8). The tendency for island taxa to converge toward intermediate body size after colonizing islands is known as the island rule (4), but this ecogeographic rule has proven to be an inconsistent predictor of evolutionary tr ...
... reflecting evolution toward a generalist niche in species-poor communities (4–8). The tendency for island taxa to converge toward intermediate body size after colonizing islands is known as the island rule (4), but this ecogeographic rule has proven to be an inconsistent predictor of evolutionary tr ...
Species at Risk Act
... concerning the addition or reclassification of these terrestrial species. Your comments are considered in relation to the potential consequences of whether or not a species is included on Schedule 1, and they are then used to draft the Minister’s proposed listing recommendations for each of these sp ...
... concerning the addition or reclassification of these terrestrial species. Your comments are considered in relation to the potential consequences of whether or not a species is included on Schedule 1, and they are then used to draft the Minister’s proposed listing recommendations for each of these sp ...
Modelling Food Webs
... relationships to emerge. Community food webs cannot include all species in a habitat (such ...
... relationships to emerge. Community food webs cannot include all species in a habitat (such ...
Self-limitation as an explanation for species` relative abundances
... buffering them from extremely low population numbers. To examine whether self-limitation can help rare-species persist, I use a plant community model to simulate the effect of disproportionately strong negative frequency dependence on the long term persistence of the rare species in a simulated comm ...
... buffering them from extremely low population numbers. To examine whether self-limitation can help rare-species persist, I use a plant community model to simulate the effect of disproportionately strong negative frequency dependence on the long term persistence of the rare species in a simulated comm ...
Plants & Ecology Range margins and refugia Johan Dahlberg
... Second, already Darwin (1859) noticed that competitors may limit the range of species. Connor and Bowers (1987) stated that interspecific competition plays an important role in species distribution across different spatial scales. In fruitfly experiments it has been shown that interspecific competit ...
... Second, already Darwin (1859) noticed that competitors may limit the range of species. Connor and Bowers (1987) stated that interspecific competition plays an important role in species distribution across different spatial scales. In fruitfly experiments it has been shown that interspecific competit ...
Reprint (1.8MB PDF) - Litchman-Klausmeier Lab
... (Levins, 1968, 1979; Armstrong and McGehee, 1980; Chesson and Warner, 1981; Abrams, 1984; Grover, 1990; Chesson, 1994; Huisman and Weissing, 1999; Litchman and Klausmeier, 2001; Abrams, 2004, 2006). The coexistence mechanism we investigate in this paper is a member of this last category. Temporal va ...
... (Levins, 1968, 1979; Armstrong and McGehee, 1980; Chesson and Warner, 1981; Abrams, 1984; Grover, 1990; Chesson, 1994; Huisman and Weissing, 1999; Litchman and Klausmeier, 2001; Abrams, 2004, 2006). The coexistence mechanism we investigate in this paper is a member of this last category. Temporal va ...
Occupancy Modeling
... pond is visited once a day for five days (or alternatively five locations within a pond could be sampled) and whether any salamanders are present at each pond is recorded. ...
... pond is visited once a day for five days (or alternatively five locations within a pond could be sampled) and whether any salamanders are present at each pond is recorded. ...
Biogeography and community structure of North American
... million individuals per hectare and can have a total biomass comparable to that of small vertebrates (156). By virtue of their numbers, these ants harvest up to several million seeds per hectare per year (primarily from annual plants). Thus, these ants have a significant impact on energy flow and al ...
... million individuals per hectare and can have a total biomass comparable to that of small vertebrates (156). By virtue of their numbers, these ants harvest up to several million seeds per hectare per year (primarily from annual plants). Thus, these ants have a significant impact on energy flow and al ...
Ecological Character Displacement in Adaptive Radiation
... demonstration would not rule out the possibility that other interactions are also present and influencing divergence, but it would nevertheless satisfy an important precondition for character displacement. I allowed both experimental and observational evidence for competition. Tests of this criterio ...
... demonstration would not rule out the possibility that other interactions are also present and influencing divergence, but it would nevertheless satisfy an important precondition for character displacement. I allowed both experimental and observational evidence for competition. Tests of this criterio ...
european mink
... habitats inaccessible for American mink and with protection measures applied to prevent the impact of other possible causes of extinction (hunting prohibited and habitats protected), - the wild populations consisting of, as a minimum, the total of 1,500 individuals participating in breeding (this wi ...
... habitats inaccessible for American mink and with protection measures applied to prevent the impact of other possible causes of extinction (hunting prohibited and habitats protected), - the wild populations consisting of, as a minimum, the total of 1,500 individuals participating in breeding (this wi ...
Principles and Concepts of Pest Management, In
... Control of insect pest population is a function of the ecosystem itself by means of natural enemies and other factors. Knowledge of the role of the principle elements of the units is essential to an understanding of population phenomenon. The study of individuals is of prime importance, their biolog ...
... Control of insect pest population is a function of the ecosystem itself by means of natural enemies and other factors. Knowledge of the role of the principle elements of the units is essential to an understanding of population phenomenon. The study of individuals is of prime importance, their biolog ...
Blanchard`s Cricket Frog (Acris blanchardi)
... Formerly recognized as a subspecies of the Northern Cricket Frog (Acris crepitans), the Blanchard’s Cricket Frog (A. blanchardi) is listed as Endangered on Schedule 1 of the Species at Risk Act. It is also listed as Endangered under Ontario’s Endangered Species Act, 2007 1 . It is a tiny member of t ...
... Formerly recognized as a subspecies of the Northern Cricket Frog (Acris crepitans), the Blanchard’s Cricket Frog (A. blanchardi) is listed as Endangered on Schedule 1 of the Species at Risk Act. It is also listed as Endangered under Ontario’s Endangered Species Act, 2007 1 . It is a tiny member of t ...
Molecular Ecology, 10, 2569–2576
... genealogical pathway, and may not reflect populationlevel divergences. Introgressive hybridization, natural selection, retention of ancestral polymorphisms, and other evolutionary forces all conspire to generate discordances among loci. Similarly, when comparing the phylogeographic patterns of diffe ...
... genealogical pathway, and may not reflect populationlevel divergences. Introgressive hybridization, natural selection, retention of ancestral polymorphisms, and other evolutionary forces all conspire to generate discordances among loci. Similarly, when comparing the phylogeographic patterns of diffe ...
The Linkage between Conservation Strategies for Large Carnivores
... have gone extinct. For all these species and most forested habitats, the 19th and early 20th centuries were the bottlenecks when a variety of factors coincided such that human pressure on land and resources was at its maximum. At the start of the 21st century the situation has changed dramatically. ...
... have gone extinct. For all these species and most forested habitats, the 19th and early 20th centuries were the bottlenecks when a variety of factors coincided such that human pressure on land and resources was at its maximum. At the start of the 21st century the situation has changed dramatically. ...
Modelling Food Webs Abstract 1 Introduction
... relationships to emerge. Community food webs cannot include all species in a habitat (such as all the bacteria living within plants and animals), but rather focus on a set of different types of species, which are chosen prior to analyzing their predator-prey relationships. This reduction of the ric ...
... relationships to emerge. Community food webs cannot include all species in a habitat (such as all the bacteria living within plants and animals), but rather focus on a set of different types of species, which are chosen prior to analyzing their predator-prey relationships. This reduction of the ric ...
Consequences of low mobility in spatially and temporally
... 1 Spatially explicit landscape models have revealed the importance of spatial arrangement of habitat patches in the behaviour of mobile organisms. Such models fail to account for creation and destruction of habitat, which may interrupt the movement of slowly migrating species such as forest herbs. 2 ...
... 1 Spatially explicit landscape models have revealed the importance of spatial arrangement of habitat patches in the behaviour of mobile organisms. Such models fail to account for creation and destruction of habitat, which may interrupt the movement of slowly migrating species such as forest herbs. 2 ...
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.