The Mutualistic Niche
... (West et al. 2007) was recognized early in the history of biology (De Bary 1879), ecologists for many years considered the phenomenon to be uncommon (Rich & Boucher 1976). As a result, research on ecological interactions historically focused on antagonisms such as natural enemies and competition, le ...
... (West et al. 2007) was recognized early in the history of biology (De Bary 1879), ecologists for many years considered the phenomenon to be uncommon (Rich & Boucher 1976). As a result, research on ecological interactions historically focused on antagonisms such as natural enemies and competition, le ...
2015 Program - Western Society of Naturalists
... who have pre-registered. Those who have not pre-registered but wish to attend the meeting can pay for membership and registration (with a $20 late fee) at the registration table. Unfortunately, banquet tickets cannot be sold at the meeting because the hotel requires final counts of attendees well in ...
... who have pre-registered. Those who have not pre-registered but wish to attend the meeting can pay for membership and registration (with a $20 late fee) at the registration table. Unfortunately, banquet tickets cannot be sold at the meeting because the hotel requires final counts of attendees well in ...
Shorebird Summary Report - March 2012
... habitat. Penrhyn Estuary is considered a significant feeding and roosting site in Botany Bay for seven ‘key’ species (NSW Wader Study Group Data). Six of these species were selected to measure the success of the PEHEP project throughout the pre-construction, construction and post construction phases ...
... habitat. Penrhyn Estuary is considered a significant feeding and roosting site in Botany Bay for seven ‘key’ species (NSW Wader Study Group Data). Six of these species were selected to measure the success of the PEHEP project throughout the pre-construction, construction and post construction phases ...
Recovery Plan Appendix B
... 2. All of the species in Gatton and Laidley Shires listed as endangered, vulnerable or rare under the Queensland Nature Conservation Regulation 1994. 3. All of the ecological communities in Gatton and Laidley Shires that have a status of endangered or of-concern under the Queensland Vegetation Manag ...
... 2. All of the species in Gatton and Laidley Shires listed as endangered, vulnerable or rare under the Queensland Nature Conservation Regulation 1994. 3. All of the ecological communities in Gatton and Laidley Shires that have a status of endangered or of-concern under the Queensland Vegetation Manag ...
Evaluation of the effects of habitat restoration on
... a coastal wetland, is located within this complex. Crown Marsh provides important habitat for migratory waterfowl as they use it for breeding and foraging (Meyer et al. 2010). It is also important for fishes as they use wetlands as nursery habitats, spawning grounds, and to feed (Jude and Pappas 199 ...
... a coastal wetland, is located within this complex. Crown Marsh provides important habitat for migratory waterfowl as they use it for breeding and foraging (Meyer et al. 2010). It is also important for fishes as they use wetlands as nursery habitats, spawning grounds, and to feed (Jude and Pappas 199 ...
The Impacts of Shoreline Development on Shallow-water Benthic Communities in the Patuxent River, MD
... system-specific physical features on benthic infauna in the Patuxent River, Chesapeake Bay. Forty-five sites were divided among three shoreline types and distributed across three main river zones. At each site, a benthic infaunal suction sample (3-mm mesh), push-core sample (500-µm mesh), sediment s ...
... system-specific physical features on benthic infauna in the Patuxent River, Chesapeake Bay. Forty-five sites were divided among three shoreline types and distributed across three main river zones. At each site, a benthic infaunal suction sample (3-mm mesh), push-core sample (500-µm mesh), sediment s ...
Wulff 2012 - FSU Biology
... Metrics chosen for evaluating sponge abundance make a substantial difference in interpretation of data comparing between different sites, or over time at the same site. In most cases, evaluating abundance by volume or biomass allows more ecologically meaningful interpretation of influences on distri ...
... Metrics chosen for evaluating sponge abundance make a substantial difference in interpretation of data comparing between different sites, or over time at the same site. In most cases, evaluating abundance by volume or biomass allows more ecologically meaningful interpretation of influences on distri ...
Herbivore and predator diversity interactively affect ecosystem
... to rigorously evaluate the effects of changing diversity within a level on adjacent levels, or the interactive effects of simultaneous diversity change at multiple levels (reviewed by Duffy et al. 2007; Bruno and Cardinale 2008). With the exception of experiments performed in plant-pollinator system ...
... to rigorously evaluate the effects of changing diversity within a level on adjacent levels, or the interactive effects of simultaneous diversity change at multiple levels (reviewed by Duffy et al. 2007; Bruno and Cardinale 2008). With the exception of experiments performed in plant-pollinator system ...
prey selection in horned lizards following the
... diet. In addition, Argentine ants were never detected in horned lizard fecal pellets, suggesting that they are not a suitable replacement food source for the native species they are displacing. Analysis of prey selection in uninvaded areas reveals that ant species consumption by adult lizards is cor ...
... diet. In addition, Argentine ants were never detected in horned lizard fecal pellets, suggesting that they are not a suitable replacement food source for the native species they are displacing. Analysis of prey selection in uninvaded areas reveals that ant species consumption by adult lizards is cor ...
Reid`s Paradox Revisited: The Evolution of Dispersal Kernels during
... these trees recolonized areas of Europe and North America after the last ice age (Skellam 1951; Clark 1998; Clark et al. 1998). In 1998, Clark suggested that if an appropriate shape for the dispersal kernel is chosen (i.e., a fat-tailed distribution, where long-distance dispersal events are more com ...
... these trees recolonized areas of Europe and North America after the last ice age (Skellam 1951; Clark 1998; Clark et al. 1998). In 1998, Clark suggested that if an appropriate shape for the dispersal kernel is chosen (i.e., a fat-tailed distribution, where long-distance dispersal events are more com ...
Recovery strategy for the American Badger
... Indiana, where expansions have been facilitated by forest clearcutting for agriculture and mining (Gremillion-Smith 1985). Badgers have been recorded in all northern counties and in 52 of 68 southern counties of Michigan (Baker 1983) and in the western 23 counties of Ohio (Ohio Historical Society 20 ...
... Indiana, where expansions have been facilitated by forest clearcutting for agriculture and mining (Gremillion-Smith 1985). Badgers have been recorded in all northern counties and in 52 of 68 southern counties of Michigan (Baker 1983) and in the western 23 counties of Ohio (Ohio Historical Society 20 ...
ABSTRACT Title of Document:
... My committee, of course, has been instrumental to my progress. Mary Christman and Dan Gruner helped greatly with the statistical and community analyses. Mary, you were one of the major reasons why I wanted to come to Maryland. Though I was disappointed when you moved to Florida, I am glad that we ha ...
... My committee, of course, has been instrumental to my progress. Mary Christman and Dan Gruner helped greatly with the statistical and community analyses. Mary, you were one of the major reasons why I wanted to come to Maryland. Though I was disappointed when you moved to Florida, I am glad that we ha ...
The Dynamics of Location: Influence of Predation by
... Every freshwater organism chooses a location based on a balance between the chemical and physical characteristics of the body of water they inhabit with its food concentrations and areas of predation risk. All of these components of a body of water can be dynamic, and may fluctuate over time. The pr ...
... Every freshwater organism chooses a location based on a balance between the chemical and physical characteristics of the body of water they inhabit with its food concentrations and areas of predation risk. All of these components of a body of water can be dynamic, and may fluctuate over time. The pr ...
Stoichiometry of nutrient excretion by fish: interspecific variation in a
... of gizzard shad in nutrient cycling in reservoir ecosystems is probably due to their relatively high biomass (Vanni et al. 2005, 2006). Yet, it is not known whether the ecosystem-level importance of shad in nutrient cycling is due simply to their great abundance, or also because they have higher per ...
... of gizzard shad in nutrient cycling in reservoir ecosystems is probably due to their relatively high biomass (Vanni et al. 2005, 2006). Yet, it is not known whether the ecosystem-level importance of shad in nutrient cycling is due simply to their great abundance, or also because they have higher per ...
ecological community - Department of the Environment
... Ecological communities can also show natural and/or disturbance-induced variation across the range of their geographic distribution. A broad-scale ecological community may be defined with regional variants and/or sub-components and/or sub-types and/or sub-communities or these could be defined as sep ...
... Ecological communities can also show natural and/or disturbance-induced variation across the range of their geographic distribution. A broad-scale ecological community may be defined with regional variants and/or sub-components and/or sub-types and/or sub-communities or these could be defined as sep ...
this thesis - Waddenacademie
... Once the sediment is above the level of mean high water neap tide (MHWN) and therefore not continuously submerged, terrestrial salt-marsh plants can colonize and establish (Beeftink 1977). A characteristic feature of salt-marsh vegetation is the spatial distribution of different species or plant com ...
... Once the sediment is above the level of mean high water neap tide (MHWN) and therefore not continuously submerged, terrestrial salt-marsh plants can colonize and establish (Beeftink 1977). A characteristic feature of salt-marsh vegetation is the spatial distribution of different species or plant com ...
Observations of Elk and Deer Competition and Commensalism on
... Our preliminary observations imply that competition on this study area is more intraspecific than interspecific. Reducingdeernumbersprobably would not allow greater elk numbers as a result. Conversely, it does not appear that a decrease in the elk population would allow deer numbers to increase. Mor ...
... Our preliminary observations imply that competition on this study area is more intraspecific than interspecific. Reducingdeernumbersprobably would not allow greater elk numbers as a result. Conversely, it does not appear that a decrease in the elk population would allow deer numbers to increase. Mor ...
Small mouthed Salamander (Ambystoma texanum)
... The federal, provincial, and territorial government signatories under the Accord for the Protection of Species at Risk (1996) 2 agreed to establish complementary legislation and programs that provide for effective protection of species at risk throughout Canada. Under the Species at Risk Act (S.C. 2 ...
... The federal, provincial, and territorial government signatories under the Accord for the Protection of Species at Risk (1996) 2 agreed to establish complementary legislation and programs that provide for effective protection of species at risk throughout Canada. Under the Species at Risk Act (S.C. 2 ...
... 1996; Wilcove et al., 1998; Parker et al., 1999; Mack et al., 2000; Sala et al., 2000; Stein et al., 2000) and to dramatically alter ecosystem processes (D’Antonio and Vitousek, 1992; Gordon, 1998; Mack and D’Antonio, 1998; Blossey et al., 2001). Grass species may be particularly noxious invaders be ...
White sturgeon, Shovelnose sturgeon, American Paddlefish U.S.
... Seafood Watch® strives to ensure all its seafood reports and the recommendations contained therein are accurate and reflect the most up-to-date evidence available at time of publication. All our reports are peer reviewed for accuracy and completeness by external scientists with expertise in ecology, ...
... Seafood Watch® strives to ensure all its seafood reports and the recommendations contained therein are accurate and reflect the most up-to-date evidence available at time of publication. All our reports are peer reviewed for accuracy and completeness by external scientists with expertise in ecology, ...
effects of interspecific competition and multiple predators
... Actively hunting predators are usually very mobile. Thus, the risk of predation perceived by their prey tends to vary in time. Due to the trade-off between antipredatory behaviour and other fundamental activities, such as feeding and mating, prey should greatly benefit from an ability to adjust thei ...
... Actively hunting predators are usually very mobile. Thus, the risk of predation perceived by their prey tends to vary in time. Due to the trade-off between antipredatory behaviour and other fundamental activities, such as feeding and mating, prey should greatly benefit from an ability to adjust thei ...
vernal pool fairy shrimp - Solano County Water Agency
... fairy shrimp have been found in most of the remaining vernal pool complexes in the Plan Area. As discussed above, it is a widely distributed species occursing in a smaller size range of pools, but tends to occur at relatively low population levels. Al least 40 records of the vernal pool fairy shrimp ...
... fairy shrimp have been found in most of the remaining vernal pool complexes in the Plan Area. As discussed above, it is a widely distributed species occursing in a smaller size range of pools, but tends to occur at relatively low population levels. Al least 40 records of the vernal pool fairy shrimp ...
Ferruginous Hawk (Buteo regalis)
... Alberta, the population was estimated at 618 ± 162 pairs in 2005, substantially lower than earlier estimates. Whether this is due to an actual decline in numbers in Alberta or improvements in survey techniques in unknown but it is now thought that the population has been at a low since 2000. In Sask ...
... Alberta, the population was estimated at 618 ± 162 pairs in 2005, substantially lower than earlier estimates. Whether this is due to an actual decline in numbers in Alberta or improvements in survey techniques in unknown but it is now thought that the population has been at a low since 2000. In Sask ...
Risk Assessment
... distribution in North America based on the environmental layers. The analyses create random rules (algorithms) and repeatedly analyze their accuracy until a maximum prediction of accuracy is reached. The environmental layers used to identify potential distribution are tested for their relevance for, ...
... distribution in North America based on the environmental layers. The analyses create random rules (algorithms) and repeatedly analyze their accuracy until a maximum prediction of accuracy is reached. The environmental layers used to identify potential distribution are tested for their relevance for, ...
distribution and ecology of the broad
... Kosciuszko National Park with between 69–81% of adults surviving the over-winter period. The species falls within the Critical Weight Range (Burbidge and McKenzie 1989) and are therefore at high risk to decline and extinction through predation by introduced predators such as foxes and cats. The spec ...
... Kosciuszko National Park with between 69–81% of adults surviving the over-winter period. The species falls within the Critical Weight Range (Burbidge and McKenzie 1989) and are therefore at high risk to decline and extinction through predation by introduced predators such as foxes and cats. The spec ...