![Rountree, R.A., and K.W. Able. 2007](http://s1.studyres.com/store/data/017657306_1-e4aad00b007c3060dfe10e21ce1f87be-300x300.png)
Rountree, R.A., and K.W. Able. 2007
... and salt marshes. Some recent work, for example, has been to describe the nekton assemblages associated with marsh creeks (Rountree and Able 1992a) and marsh pools (Smith and Able 2003; Hampel et al. 2004; Able et al. 2005). Minello et al. (2003) reviewed the literature on nekton association with ha ...
... and salt marshes. Some recent work, for example, has been to describe the nekton assemblages associated with marsh creeks (Rountree and Able 1992a) and marsh pools (Smith and Able 2003; Hampel et al. 2004; Able et al. 2005). Minello et al. (2003) reviewed the literature on nekton association with ha ...
LISTED SPECIES Sacramento Winter-Run Chinook Salmon
... An "abundance index" is used to estimate a proportion of the population because sampling an entire population is nearly impossible and a mark-recapture study using delta smelt cannot be done because the fish is too fragile. An index is dimensionless (i.e., it has no unit of measurement). By systemat ...
... An "abundance index" is used to estimate a proportion of the population because sampling an entire population is nearly impossible and a mark-recapture study using delta smelt cannot be done because the fish is too fragile. An index is dimensionless (i.e., it has no unit of measurement). By systemat ...
Vesper Sparrow affinis subspecies Pooecetes gramineus affini
... The Canadian breeding population of the Coastal Vesper Sparrow is currently estimated at five to ten breeding pairs. Although historic population estimates are not available, the population has probably declined based on the fact that fewer localities are now occupied. Populations have also declined ...
... The Canadian breeding population of the Coastal Vesper Sparrow is currently estimated at five to ten breeding pairs. Although historic population estimates are not available, the population has probably declined based on the fact that fewer localities are now occupied. Populations have also declined ...
FastTracks - People Pages
... and a whole slew of other conflicting locations. 2. Much of the data consulted about the white-tailed jackrabbit is over twenty years old. One Wisconsin study is from the 1940s6. A lot of potential change in habitat and the species itself can occur in such a long span of decades. 3. There are inco ...
... and a whole slew of other conflicting locations. 2. Much of the data consulted about the white-tailed jackrabbit is over twenty years old. One Wisconsin study is from the 1940s6. A lot of potential change in habitat and the species itself can occur in such a long span of decades. 3. There are inco ...
Long-term dynamics of three benthic Ampelisca (Crustacea
... Downhill Simplex optimisation techniques, with a rou0 (low survival) and if there are only few individuals, tine in FORTRAN and the Numerical Recipes Library the competition effect decreases and this factor is close (Press 1992). We minimised the distance between simto 1 (more survival). ulated and ...
... Downhill Simplex optimisation techniques, with a rou0 (low survival) and if there are only few individuals, tine in FORTRAN and the Numerical Recipes Library the competition effect decreases and this factor is close (Press 1992). We minimised the distance between simto 1 (more survival). ulated and ...
Ecological Divergence and Reproductive Isolation in an Amazonian
... demonstrated that physiological trade offs associated with adaptation to different habitat types leads to ecological sorting which in turn drives the spatial distribution of tropical trees along environmental gradients. If populations that are locally adapted to different environments experience a r ...
... demonstrated that physiological trade offs associated with adaptation to different habitat types leads to ecological sorting which in turn drives the spatial distribution of tropical trees along environmental gradients. If populations that are locally adapted to different environments experience a r ...
Fish Habitat Management for PA Impoundments
... itself, this has come true only in a small number of impoundments. For the most part, aquatic vegetation Most Pennsylvania impoundments have very little cover in impoundments is either overfor fish to use to accomplish survival tasks. abundant or nonexistent. In reservoirs where aquatic vegetation d ...
... itself, this has come true only in a small number of impoundments. For the most part, aquatic vegetation Most Pennsylvania impoundments have very little cover in impoundments is either overfor fish to use to accomplish survival tasks. abundant or nonexistent. In reservoirs where aquatic vegetation d ...
Bringing the Hutchinsonian niche into the 21st century
... Such models are essential bridges between lower-level organismal traits and population-level predictions about species’ distributions and responses to environmental change. Again, as with the ‘‘brute force’’ approach of conducting experiments to characterize the niche, developing these models is cha ...
... Such models are essential bridges between lower-level organismal traits and population-level predictions about species’ distributions and responses to environmental change. Again, as with the ‘‘brute force’’ approach of conducting experiments to characterize the niche, developing these models is cha ...
The need for integrative approaches to understand and conserve
... and their density-dependence in other parts of the cycle. A reduction of habitat in one season can be partially compensated by density-dependent responses in the other season. Nonetheless, the general conclusion is that habitat loss in the season with more stringent density-dependence has the greate ...
... and their density-dependence in other parts of the cycle. A reduction of habitat in one season can be partially compensated by density-dependent responses in the other season. Nonetheless, the general conclusion is that habitat loss in the season with more stringent density-dependence has the greate ...
A gentle depilation of the niche: Dicean
... Hutchinson's appealing geometric formalization greatly stimulated a quantitative approach to the niche and related phenomena. It does not diminish his contribution to note, however, that biologically his concept is essentially identical to that developed but never concisely articulated by Grinnell. ...
... Hutchinson's appealing geometric formalization greatly stimulated a quantitative approach to the niche and related phenomena. It does not diminish his contribution to note, however, that biologically his concept is essentially identical to that developed but never concisely articulated by Grinnell. ...
Most theoretical models of species coexistence assume that habitat patches... dynamic habitat P S
... Research on the Sarracenia system to date has focused primarily on structure and dynamics of Sarracenia’s aquatic food web, and on the interplay between the food web and the plant. We now have a rich picture of the dynamics of this food web, but we have not yet addressed the fact that its habitat – ...
... Research on the Sarracenia system to date has focused primarily on structure and dynamics of Sarracenia’s aquatic food web, and on the interplay between the food web and the plant. We now have a rich picture of the dynamics of this food web, but we have not yet addressed the fact that its habitat – ...
Alternative Stable States Generated by Ontogenetic Niche
... turn, leads to an increase in the juvenile resource through a suppression of reproduction. This process results in positive feedback that leads to a situation in which the system converges to either a juvenile- or an adult-dominated state, depending on the initial conditions (see also a review by [1 ...
... turn, leads to an increase in the juvenile resource through a suppression of reproduction. This process results in positive feedback that leads to a situation in which the system converges to either a juvenile- or an adult-dominated state, depending on the initial conditions (see also a review by [1 ...
Southern Brown Bandicoot Management Plan
... The Southern Brown Bandicoot, Isoodon obesulus obesulus (Shaw and Nodder 1797), is a mediumsized (400-1600g) ground-dwelling marsupial. Like other members of the bandicoot family (Peramelidae) the species has a long tapering snout with a naked nose, a compact body and short tail with a pointed end. ...
... The Southern Brown Bandicoot, Isoodon obesulus obesulus (Shaw and Nodder 1797), is a mediumsized (400-1600g) ground-dwelling marsupial. Like other members of the bandicoot family (Peramelidae) the species has a long tapering snout with a naked nose, a compact body and short tail with a pointed end. ...
Population and Evolutionary Dynamics based on Predator
... Evolutionary process can affect ecological dynamics at intra- and interspecies levels. This study focuses on the predator-prey interactions as the key element of ecological systems (Legreneur et al., 2012). Predation pressures in food chains shape diversity and functions of organisms (Agrawal, 2001) ...
... Evolutionary process can affect ecological dynamics at intra- and interspecies levels. This study focuses on the predator-prey interactions as the key element of ecological systems (Legreneur et al., 2012). Predation pressures in food chains shape diversity and functions of organisms (Agrawal, 2001) ...
Population Cycles in Forest Lepidoptera Revisited
... also needed. She also suggested that the importance of pathogens might have been generally overlooked. Twenty-five years later, we revisit the question of generality by reviewing recent work and ask, “What are the common characteristics of forest Lepidoptera populations that might explain their cycli ...
... also needed. She also suggested that the importance of pathogens might have been generally overlooked. Twenty-five years later, we revisit the question of generality by reviewing recent work and ask, “What are the common characteristics of forest Lepidoptera populations that might explain their cycli ...
Connectivity at the Land-Water Interface
... observer bias that affects the perception of directionality, which will be addressed later. Known examples mainly involve fluxes of energy, organisms, or materials, but there are also fluxes of information that create connectivity. For example, as described above, prey in one habitat may alter their ...
... observer bias that affects the perception of directionality, which will be addressed later. Known examples mainly involve fluxes of energy, organisms, or materials, but there are also fluxes of information that create connectivity. For example, as described above, prey in one habitat may alter their ...
The role of macrophytes in habitat structuring in aquatic
... in aquatic environments. These plants provide physical structure, increase habitat complexity and heterogeneity and affect various organisms like invertebrates, fishes and waterbirds. The complexity provided by macrophytes has been exhaustively studied in aquatic environments. However, macrophyte co ...
... in aquatic environments. These plants provide physical structure, increase habitat complexity and heterogeneity and affect various organisms like invertebrates, fishes and waterbirds. The complexity provided by macrophytes has been exhaustively studied in aquatic environments. However, macrophyte co ...
PDF - 270 KB
... interaction of organisms and their environment linked to roads and vehicles” (Forman et al. 2003), is still developing. Only in the past few decades has the relevance of the road in a landscape context, and its effects on the adjacent corridor, become a focus of study. Understanding road ecology req ...
... interaction of organisms and their environment linked to roads and vehicles” (Forman et al. 2003), is still developing. Only in the past few decades has the relevance of the road in a landscape context, and its effects on the adjacent corridor, become a focus of study. Understanding road ecology req ...
Rethinking Adaptation the niche
... as a process by which natural selection, stemming from an external environment, gradually molds organisms to be well suited to their environments (Godfrey-Smith 1998). Despite recognition that processes independent of organisms often change the world to which populations adapt (Van Valen 1973), with ...
... as a process by which natural selection, stemming from an external environment, gradually molds organisms to be well suited to their environments (Godfrey-Smith 1998). Despite recognition that processes independent of organisms often change the world to which populations adapt (Van Valen 1973), with ...
Population dynamics of red-backed voles (Myodes) in North America
... north of latitude 60°N in the boreal forest and tundra regions (Banfield 1974). In the tundra, it is limited to southern areas and does not occur on the arctic islands of Canada. The southern red-backed vole (M. gapperi) is endemic to North America occurring approximately south of 60°N latitude acro ...
... north of latitude 60°N in the boreal forest and tundra regions (Banfield 1974). In the tundra, it is limited to southern areas and does not occur on the arctic islands of Canada. The southern red-backed vole (M. gapperi) is endemic to North America occurring approximately south of 60°N latitude acro ...
Montane (habitats above the treeline) U1
... concerted efforts by some estates to reduce numbers. Sheep concentrations have also been traditionally high in hillfarm areas as a result of headage payment agricultural incentives. Although the incentive system has now changed, the legacy of high grazing levels of both deer and sheep over several d ...
... concerted efforts by some estates to reduce numbers. Sheep concentrations have also been traditionally high in hillfarm areas as a result of headage payment agricultural incentives. Although the incentive system has now changed, the legacy of high grazing levels of both deer and sheep over several d ...
Sample pages 2 PDF
... Disturbances are a set of events that can disrupt any ecological level, environmental component as well as the organizational status of a biological cycle of organisms (Pickett et al. 1989). They are an important aspect in the natural selection and the whole biological evolution, as they modify the ...
... Disturbances are a set of events that can disrupt any ecological level, environmental component as well as the organizational status of a biological cycle of organisms (Pickett et al. 1989). They are an important aspect in the natural selection and the whole biological evolution, as they modify the ...
Lamprey-Draft-Object..
... include many age classes making them susceptible to chemical spills or chemical treatment (rotenone) targeting other species (FWS 2009). They spend 3-7 years filter feeding and accumulate chemicals such as PCB’s, mercury and other heavy metals (FWS 2009). Accumulated toxins in the lower reaches of s ...
... include many age classes making them susceptible to chemical spills or chemical treatment (rotenone) targeting other species (FWS 2009). They spend 3-7 years filter feeding and accumulate chemicals such as PCB’s, mercury and other heavy metals (FWS 2009). Accumulated toxins in the lower reaches of s ...
Eco-evolutionary feedbacks during experimental range
... frequency, likely due to anthropogenic habitat conversion, species introductions or climate change1–4. While it is ecologically and economically highly relevant to predict the spatiotemporal dynamics of species’ ranges, this task remains challenging5–7 as populations experiencing novel environments ...
... frequency, likely due to anthropogenic habitat conversion, species introductions or climate change1–4. While it is ecologically and economically highly relevant to predict the spatiotemporal dynamics of species’ ranges, this task remains challenging5–7 as populations experiencing novel environments ...
Interactions of Life Practice Test 2011 Answer Section
... According to the graph, what is the carrying capacity for the rabbits? a. 60 c. 55 b. 65 d. Not enough information ____ 23. According to the graph, during what month did the rabbits experience exponential growth? a. May c. August b. June d. September ____ 24. On a graph, when logistic growth occurs, ...
... According to the graph, what is the carrying capacity for the rabbits? a. 60 c. 55 b. 65 d. Not enough information ____ 23. According to the graph, during what month did the rabbits experience exponential growth? a. May c. August b. June d. September ____ 24. On a graph, when logistic growth occurs, ...