Slide 1
... Drury & Nisbet (1973) – verbal models of succession driven by differences in dispersal & competitive ability, growth & survival Platt (1975) – empirical demonstration of mechanisms of coexistence of fugitive species on badger-mound disturbances ...
... Drury & Nisbet (1973) – verbal models of succession driven by differences in dispersal & competitive ability, growth & survival Platt (1975) – empirical demonstration of mechanisms of coexistence of fugitive species on badger-mound disturbances ...
The adaptive value of migrations for the bivalve Macoma balthica
... because they have to leave their burrow and become available for pelagic predators such as fish, which they normally do not encounter, and they run the risk to end up in unsuitable habitats. Therefore, the change of habitat must offer major advantages to the migrant. A common life-history feature of ...
... because they have to leave their burrow and become available for pelagic predators such as fish, which they normally do not encounter, and they run the risk to end up in unsuitable habitats. Therefore, the change of habitat must offer major advantages to the migrant. A common life-history feature of ...
A Review of Human Disturbance Impacts on
... Increased demand for recreational opportunities, shipping lanes, and ferry routes will also likely have an impact on the waterbirds that use the Bay. For example, human caused disturbances from boating or walking can cause birds to take flight, which may increase energy expenditure, or affect their ...
... Increased demand for recreational opportunities, shipping lanes, and ferry routes will also likely have an impact on the waterbirds that use the Bay. For example, human caused disturbances from boating or walking can cause birds to take flight, which may increase energy expenditure, or affect their ...
A Review of Human Disturbance Impacts on Waterbirds
... Increased demand for recreational opportunities, shipping lanes, and ferry routes will also likely have an impact on the waterbirds that use the Bay. For example, human caused disturbances from boating or walking can cause birds to take flight, which may increase energy expenditure, or affect their ...
... Increased demand for recreational opportunities, shipping lanes, and ferry routes will also likely have an impact on the waterbirds that use the Bay. For example, human caused disturbances from boating or walking can cause birds to take flight, which may increase energy expenditure, or affect their ...
Conserving biodiversity and combating desertification: Achieving
... a How to establish the appropriate spatial scale of any interventions taking into account the natural and social mosaic of the Mediterranean region a How to elaborate compromises and optimised solutions that will serve reasonably well both targets ...
... a How to establish the appropriate spatial scale of any interventions taking into account the natural and social mosaic of the Mediterranean region a How to elaborate compromises and optimised solutions that will serve reasonably well both targets ...
Habitat Structure - MSC Program Improvements
... providing refuge, and influencing the behaviour of organisms. Comments from First Stakeholder Workshop and Public Consultation Habitat The workshop attendees generally felt that the proposed definition for “habitat” was good, but some felt that oceanographic dynamics should be recognised and include ...
... providing refuge, and influencing the behaviour of organisms. Comments from First Stakeholder Workshop and Public Consultation Habitat The workshop attendees generally felt that the proposed definition for “habitat” was good, but some felt that oceanographic dynamics should be recognised and include ...
The habitat condition data dictionary
... Insufficient food due interspecific and intraspecific (hatchery produced) competition. Alteration of ecological dynamics affecting the species composition, distribution or nutritional quality of zooplankton, macroinvertebrates, forage-fish or other prey resulting in insufficient food for salmonids. ...
... Insufficient food due interspecific and intraspecific (hatchery produced) competition. Alteration of ecological dynamics affecting the species composition, distribution or nutritional quality of zooplankton, macroinvertebrates, forage-fish or other prey resulting in insufficient food for salmonids. ...
A Review of Human Disturbance Effects on Nesting Colonial
... Twelve studies examined the effects of investigator, aircraft, and ecotourism on pelecaniform reproductive success and behavior. In the case of pelicans, clutch size, hatching success, fledging success, and overall reproductive success were lowered as a result of human (Schrieber and Risebrough 1972 ...
... Twelve studies examined the effects of investigator, aircraft, and ecotourism on pelecaniform reproductive success and behavior. In the case of pelicans, clutch size, hatching success, fledging success, and overall reproductive success were lowered as a result of human (Schrieber and Risebrough 1972 ...
INTRODUCTION LIFE STAGES So what did come first, the chicken
... entire population has reached the spawning ground. The run will not begin until environmental conditions are appropriate for each species. Salmonids depend on specific water and air temperatures, as well as stream access and flow, to increase their odds of survivorship. A heterogeneous stream enviro ...
... entire population has reached the spawning ground. The run will not begin until environmental conditions are appropriate for each species. Salmonids depend on specific water and air temperatures, as well as stream access and flow, to increase their odds of survivorship. A heterogeneous stream enviro ...
Disturbance, Habitat Structure, and the Dynamics of a Coral
... other suites of smaller organisms (e.g., insects, amphipods, fishes), may have very different consequences than mortality of the smaller organisms alone. The relative importance of different types of disturbances in systems where the disturbance may act directly on the focal community or indirectly ...
... other suites of smaller organisms (e.g., insects, amphipods, fishes), may have very different consequences than mortality of the smaller organisms alone. The relative importance of different types of disturbances in systems where the disturbance may act directly on the focal community or indirectly ...
A succession of theories: purging redundancy from disturbance theory
... Disturbances such as fire, windstorms and floods can have major positive and negative impacts on both natural and human-modified ecosystems. In natural ecosystems, disturbances can alter the abundance and diversity of species, and influence nutrient and energy cycling, biomass accumulation, primary ...
... Disturbances such as fire, windstorms and floods can have major positive and negative impacts on both natural and human-modified ecosystems. In natural ecosystems, disturbances can alter the abundance and diversity of species, and influence nutrient and energy cycling, biomass accumulation, primary ...
University of Groningen Rewilding with large herbivores Smit
... dynamics and soil-soil fauna feedbacks). The grazed control was separated from the partial exclosure by a 6 m buffer to avoid edge effects (e.g. herbivores may be attracted to the exclosures). We used a tractor to plough the soil 20–30 cm deep over an area of 4 12 m in each plot (soil tillage), wi ...
... dynamics and soil-soil fauna feedbacks). The grazed control was separated from the partial exclosure by a 6 m buffer to avoid edge effects (e.g. herbivores may be attracted to the exclosures). We used a tractor to plough the soil 20–30 cm deep over an area of 4 12 m in each plot (soil tillage), wi ...
1 - SANParks
... islands are not “sub-divided” by development or transformation. The maintenance of fire as a diverse process will depend on islands remaining as contiguous as possible to allow the natural spread of fires, and it will also depend on the areas being large enough to allow fire patterns to develop. Res ...
... islands are not “sub-divided” by development or transformation. The maintenance of fire as a diverse process will depend on islands remaining as contiguous as possible to allow the natural spread of fires, and it will also depend on the areas being large enough to allow fire patterns to develop. Res ...
Effects of disturbance and habitat loss on papyrus
... in which the effects of disturbance on tropical communities are examined, reveal that although in some instances species richness increases, additional species are often generalists of little conservation concern (Thiollay, 1992; Hammer et al., 1997; Barlow et al., 2002; Maclean et al., 2003a). Conv ...
... in which the effects of disturbance on tropical communities are examined, reveal that although in some instances species richness increases, additional species are often generalists of little conservation concern (Thiollay, 1992; Hammer et al., 1997; Barlow et al., 2002; Maclean et al., 2003a). Conv ...
Biotic and Abiotic Controls in River and Stream Communities
... Without attempting to be comprehensive in our review, we discuss limits and limitations of our knowledge in these areas. We also suggest types of data and technological development that would advance our understanding. While we appreciate the value and need for empirical and comparative information, ...
... Without attempting to be comprehensive in our review, we discuss limits and limitations of our knowledge in these areas. We also suggest types of data and technological development that would advance our understanding. While we appreciate the value and need for empirical and comparative information, ...
Grand Kankakee Marsh National Wildlife Refuge
... of the draft environmental assessment were distributed for a 150-day public review and comment period. The Service coordinated its public involvement effort closely, and corresponded frequently with many of the aforementioned entities. To-date, more than 14,000 people from 44 different states have c ...
... of the draft environmental assessment were distributed for a 150-day public review and comment period. The Service coordinated its public involvement effort closely, and corresponded frequently with many of the aforementioned entities. To-date, more than 14,000 people from 44 different states have c ...
Terrestrial Habitat, Ecosystem and Plants Technical Report
... terrestrial assessment. From coarsest to finest, the levels in the habitat classification system are land cover, coarse habitat type, broad habitat type and fine habitat type. Fire regime: The frequency, size, intensity, severity, patchiness, seasonality and type (e.g., ground versus canopy) of fire ...
... terrestrial assessment. From coarsest to finest, the levels in the habitat classification system are land cover, coarse habitat type, broad habitat type and fine habitat type. Fire regime: The frequency, size, intensity, severity, patchiness, seasonality and type (e.g., ground versus canopy) of fire ...
Great Basin Fact Sheet No. 1: Putting Resilience and Resistance
... cool and moist areas (frigid-xeric) with relatively higher resilience and resistance recover more quickly and may not require follow-up actions. All areas will require monitoring to determine management needs after treatment. ...
... cool and moist areas (frigid-xeric) with relatively higher resilience and resistance recover more quickly and may not require follow-up actions. All areas will require monitoring to determine management needs after treatment. ...
Full text in pdf format
... complicated spatial structure. The presence of several orders of aggregation probably results from several main biotic (interspecies interaction) and abiotic (granulometric composition of sediments and emersion period during low tide) factors. T h e degree of influence of these factors on the charac ...
... complicated spatial structure. The presence of several orders of aggregation probably results from several main biotic (interspecies interaction) and abiotic (granulometric composition of sediments and emersion period during low tide) factors. T h e degree of influence of these factors on the charac ...
Population-Wide Changes in Pinyon-Juniper Woodlands Caused by
... Mortality appears to have occurred at somewhat lower mean elevation than the mean elevation of the general population, and more severely affected plots are at lower elevations than less affected plots. For example, mean elevation of all plots with common pinyon that were measured after the drought i ...
... Mortality appears to have occurred at somewhat lower mean elevation than the mean elevation of the general population, and more severely affected plots are at lower elevations than less affected plots. For example, mean elevation of all plots with common pinyon that were measured after the drought i ...
Conspicuousness-dependent antipredatory behavior may
... Finally, behavioral compensation of conspicuousness may be costly (condition dependent) and, therefore, may affect by itself costs of signaling. One prominent model of sexual selection, the handicap model, assume that the marginal costs of signaling must be lower for males in good condition than for ...
... Finally, behavioral compensation of conspicuousness may be costly (condition dependent) and, therefore, may affect by itself costs of signaling. One prominent model of sexual selection, the handicap model, assume that the marginal costs of signaling must be lower for males in good condition than for ...
Abrupt community change on a rocky shore – biological
... clearly alternative state is maintained by the presence of consumers. All states are persistent under these conditions. However, none are stable because all revert to the alternative assemblage if the consumer guild is substantially altered. In this fashion they violate the second Connell & Sousa (1 ...
... clearly alternative state is maintained by the presence of consumers. All states are persistent under these conditions. However, none are stable because all revert to the alternative assemblage if the consumer guild is substantially altered. In this fashion they violate the second Connell & Sousa (1 ...
Heterogeneity
... • Fire, grazing & the two in combination were tested in grasslands (Glenn et al, 1992) • Locally, burning seemed to have higher heterogeneity than grazing, whilst the corollary was true at a regional scale. • Overall, untreated local plots had the most heterogeneity, but regional responses varied to ...
... • Fire, grazing & the two in combination were tested in grasslands (Glenn et al, 1992) • Locally, burning seemed to have higher heterogeneity than grazing, whilst the corollary was true at a regional scale. • Overall, untreated local plots had the most heterogeneity, but regional responses varied to ...
Conceptual ecosystem models are provided for the National Park
... We prepared conceptual models of coastal, freshwater, and terrestrial subsystems for each scoping workshop. Model development required extensive literature review and consultation with research scientists and landscape ecologists familiar with subarctic ecosystems. In some cases, published or unpubl ...
... We prepared conceptual models of coastal, freshwater, and terrestrial subsystems for each scoping workshop. Model development required extensive literature review and consultation with research scientists and landscape ecologists familiar with subarctic ecosystems. In some cases, published or unpubl ...
