amphibian and reptile survey report and management plan for
... Kentucky bluegrass (Poa pratensis), allysum (Allysum parviflorum), and rye grass (Secale cereale), among others. ...
... Kentucky bluegrass (Poa pratensis), allysum (Allysum parviflorum), and rye grass (Secale cereale), among others. ...
Evaluating least-cost model predictions with empirical
... Biology, Feb2007, Vol. 21 Issue 1, p213-223, 11p, 3 charts, 6 graphs, 1bw Abstract (English): It is important for conservation biologists to understand how well species persist in human-dominated ecosystems because protected areas constitute a small fraction of the Earth's surface and because anthro ...
... Biology, Feb2007, Vol. 21 Issue 1, p213-223, 11p, 3 charts, 6 graphs, 1bw Abstract (English): It is important for conservation biologists to understand how well species persist in human-dominated ecosystems because protected areas constitute a small fraction of the Earth's surface and because anthro ...
the role of competition in structuring ant
... 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 ...
Coastal marsh restoration challenges: An inter
... Four restoration cases on three continents Case studies from southwestern North America, South Africa, and southwestern Australia suggest that Mediterranean-type salt marshes are not easily restored. What can be done to sustain biodiversity where salts vary in response to land uses and climate chang ...
... Four restoration cases on three continents Case studies from southwestern North America, South Africa, and southwestern Australia suggest that Mediterranean-type salt marshes are not easily restored. What can be done to sustain biodiversity where salts vary in response to land uses and climate chang ...
Do aquatic macrophytes co-occur randomly? An analysis of null
... floodplain lagoons are spatially structured at different extents; (2) if spatial pattern, when present, remains in different seasonal periods (high and low water levels); and (3) whether spatial pattern is affected by the degree of connectivity of the lagoons with the main river (connected and disco ...
... floodplain lagoons are spatially structured at different extents; (2) if spatial pattern, when present, remains in different seasonal periods (high and low water levels); and (3) whether spatial pattern is affected by the degree of connectivity of the lagoons with the main river (connected and disco ...
Community-wide distribution of predator–prey interaction strength in
... maximum per capita interaction strength saturated as a function of individual herbivore biomass, likely caused by predator兾prey size thresholds. Incorporating this nonlinearity, we predicted maximum per capita interaction strength for the remaining herbivore species. The resulting distribution of pe ...
... maximum per capita interaction strength saturated as a function of individual herbivore biomass, likely caused by predator兾prey size thresholds. Incorporating this nonlinearity, we predicted maximum per capita interaction strength for the remaining herbivore species. The resulting distribution of pe ...
Olden et al. 2011 rusties
... Preventing the spread of nonnative species to new ecosystems requires predictive tools that can be used to help guide resource allocation and prioritize management activities (Ricciardi and Rasmussen 1998, Vander Zanden and Olden 2008). Our ability to confront this challenge may be enhanced if the i ...
... Preventing the spread of nonnative species to new ecosystems requires predictive tools that can be used to help guide resource allocation and prioritize management activities (Ricciardi and Rasmussen 1998, Vander Zanden and Olden 2008). Our ability to confront this challenge may be enhanced if the i ...
Taking species abundance distributions beyond
... structure ecological communities. The SAD is widely used to test alternative hypotheses regarding the determinants of community structure and biodiversity (Caswell 1976; Hubbell 2001; Etienne & Olff 2005; Chave et al. 2006; McGill et al. 2006a). Most work on the SAD has focused on the frequency dist ...
... structure ecological communities. The SAD is widely used to test alternative hypotheses regarding the determinants of community structure and biodiversity (Caswell 1976; Hubbell 2001; Etienne & Olff 2005; Chave et al. 2006; McGill et al. 2006a). Most work on the SAD has focused on the frequency dist ...
Disruption of ant-seed dispersal mutualisms by the invasive Asian
... P \ 0.05). We found that the number of A. rudis workers was 96% lower in invaded than in intact plots (t = -4.58, n = 23, P \ 0.0001; Fig. 1). Additionally, we found A. pallipes only in invaded plots (t = 2.75, n = 23, P \ 0.05) and only three workers of T. curvispinosus in intact plots. Conversely, ...
... P \ 0.05). We found that the number of A. rudis workers was 96% lower in invaded than in intact plots (t = -4.58, n = 23, P \ 0.0001; Fig. 1). Additionally, we found A. pallipes only in invaded plots (t = 2.75, n = 23, P \ 0.05) and only three workers of T. curvispinosus in intact plots. Conversely, ...
Blackburn
... study of the relationship between niche breadth and abundance (reviewed by Gaston, 1994). It has been suggested that abundant species may be common because they can use a wider spectrum of resources (they have a broader niche) than rare species (e.g. Brown, 1984). However, early demonstrations of a ...
... study of the relationship between niche breadth and abundance (reviewed by Gaston, 1994). It has been suggested that abundant species may be common because they can use a wider spectrum of resources (they have a broader niche) than rare species (e.g. Brown, 1984). However, early demonstrations of a ...
Biological pest control - doc-developpement
... in the alfalfa area treated for alfalfa weevil in the Northeastern United States was reduced by 75 percent. • A small wasp, Trichogramma ostriniae, was introduced from China to help control the European corn borer (Ostrinia nubilalis), one of the most destructive insects in North America, making it ...
... in the alfalfa area treated for alfalfa weevil in the Northeastern United States was reduced by 75 percent. • A small wasp, Trichogramma ostriniae, was introduced from China to help control the European corn borer (Ostrinia nubilalis), one of the most destructive insects in North America, making it ...
Maureen McClung - Biology Department | UNC Chapel Hill
... sample of current work both in the lab and the field. In order to explore how niche breadth responds to competition, Bolnick (2001) presented populations of cadmium-intolerant Drosophila melanogaster with both cadmium-free and cadmium-laced media. He found that populations experiencing high competit ...
... sample of current work both in the lab and the field. In order to explore how niche breadth responds to competition, Bolnick (2001) presented populations of cadmium-intolerant Drosophila melanogaster with both cadmium-free and cadmium-laced media. He found that populations experiencing high competit ...
application for
... than in an area where the waterway is degraded or has a number of non-endemic species already within it. Please indicate in your response the level of disturbance the waterway has been subject to and what these disturbances are e.g. snag removal, bank erosion, dredging, etc. Depending on the aquatic ...
... than in an area where the waterway is degraded or has a number of non-endemic species already within it. Please indicate in your response the level of disturbance the waterway has been subject to and what these disturbances are e.g. snag removal, bank erosion, dredging, etc. Depending on the aquatic ...
a.16 western spadefoot toad - Butte Regional Conservation Plan
... limited in space, which reduces the movement of individuals and genetic exchange between populations. Small, isolated populations are highly susceptible to extinction caused by Butte Regional Conservation Plan Administrative Draft ...
... limited in space, which reduces the movement of individuals and genetic exchange between populations. Small, isolated populations are highly susceptible to extinction caused by Butte Regional Conservation Plan Administrative Draft ...
Trait- and Density-Mediated Indirect Interactions Initiated by an
... Centaurea maculosa is a widespread perennial forb (Asteraceae) that produces one to many persistent panicleshaped flowering stems that are approximately 4–15 dm tall. Individual C. maculosa stems from the previous growing season were collected near Missoula to serve as experimental substrates. All p ...
... Centaurea maculosa is a widespread perennial forb (Asteraceae) that produces one to many persistent panicleshaped flowering stems that are approximately 4–15 dm tall. Individual C. maculosa stems from the previous growing season were collected near Missoula to serve as experimental substrates. All p ...
Ecological Restoration Treatments Increase Butterfly Richness and
... block by Ecological Restoration Institute (Northern Arizona University) staff (Fig. 1, monitoring plots) (Waltz et al. 2003). In 1997 and 1998, pre-treatment data were collected once from 40 0.04 ha plots per block, 20 each in control and treatment units. Plots were placed on a 60 m grid within the ...
... block by Ecological Restoration Institute (Northern Arizona University) staff (Fig. 1, monitoring plots) (Waltz et al. 2003). In 1997 and 1998, pre-treatment data were collected once from 40 0.04 ha plots per block, 20 each in control and treatment units. Plots were placed on a 60 m grid within the ...
Impacts of Predators on Northern Bobwhites in the Southeast
... life stages (Rollins and Carroll 2001). Bobwhites are vulnerable to predation since they spend most of their time on the ground, including when nesting. Game bird populations can be limited by predators, but the effects of predation on the population depend on the extent to which predation is counte ...
... life stages (Rollins and Carroll 2001). Bobwhites are vulnerable to predation since they spend most of their time on the ground, including when nesting. Game bird populations can be limited by predators, but the effects of predation on the population depend on the extent to which predation is counte ...
Do ectotherms partition thermal resources? We still do not know
... response to the use of distinct habitats. Partitioning available resources allows the coexistence of previously competing species, because different species occupy different niches. Resource partitioning has often been invoked to explain the persistence of communities with very similar species (Hutc ...
... response to the use of distinct habitats. Partitioning available resources allows the coexistence of previously competing species, because different species occupy different niches. Resource partitioning has often been invoked to explain the persistence of communities with very similar species (Hutc ...
Identification of Ecologically and Biologically Significant Areas
... undertaken make only marginal contributions to fitness. (This dimension generally applies to functional properties of areas, and in most cases ...
... undertaken make only marginal contributions to fitness. (This dimension generally applies to functional properties of areas, and in most cases ...
video slide
... relatively longer in habitats of higher photosynthetic productivity – Generally known as the 10% Law: That states that only 10% of energy will be transferred from one trophic level to the next. ...
... relatively longer in habitats of higher photosynthetic productivity – Generally known as the 10% Law: That states that only 10% of energy will be transferred from one trophic level to the next. ...
Biogeography and ecology: towards the integration of two disciplines
... what is available. Chiarucci et al. [33] address the task of quantifying species diversity and biodiversity and point out choices between using phylogenetic and functional diversity, whether to weight species abundance, and the relevance of species versus landscape diversity. In a very practical sen ...
... what is available. Chiarucci et al. [33] address the task of quantifying species diversity and biodiversity and point out choices between using phylogenetic and functional diversity, whether to weight species abundance, and the relevance of species versus landscape diversity. In a very practical sen ...
Node-by-node disassembly of a mutualistic interaction web driven
... coextinctions and the disassembly of interaction webs (11, 15). Despite the obvious direct effects of exotic ungulates and the German wasp, using metaanalysis, we found that some of the indirect effects were stronger than the direct effects (Fig. 4). Browsing by exotic ungulates on A. chilensis redu ...
... coextinctions and the disassembly of interaction webs (11, 15). Despite the obvious direct effects of exotic ungulates and the German wasp, using metaanalysis, we found that some of the indirect effects were stronger than the direct effects (Fig. 4). Browsing by exotic ungulates on A. chilensis redu ...
Top predators affect the composition of naive protist communities
... 1994; Kneitel and Miller 2002; Gotelli and Ellison 2006; Gray et al. 2006; Hoekman 2007). Whole communities can be easily sampled and used in experiments both in the field and in the laboratory. In S. purpurea’s native range in North America, insects fall and drown in the trapped rainwater. Bacteria ...
... 1994; Kneitel and Miller 2002; Gotelli and Ellison 2006; Gray et al. 2006; Hoekman 2007). Whole communities can be easily sampled and used in experiments both in the field and in the laboratory. In S. purpurea’s native range in North America, insects fall and drown in the trapped rainwater. Bacteria ...
3 - ICFCST
... and wet climate, in particular with weakly expressed season’s differences. Such conditions are favorable for realization of species potential of invertebrate herbivores having many generations per year, and for aggressiveness of phytopathogens. Nevertheless, epiphytoties also have not been recorded ...
... and wet climate, in particular with weakly expressed season’s differences. Such conditions are favorable for realization of species potential of invertebrate herbivores having many generations per year, and for aggressiveness of phytopathogens. Nevertheless, epiphytoties also have not been recorded ...
original version of Chapter 5
... Transitivity in interference networks ............................................................................... 12 ...
... Transitivity in interference networks ............................................................................... 12 ...
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.