270-275 - University of Oklahoma
... competition and predation and the exploitation of new niches (Romero and Green, 2005); however, very few tests of these ideas have thus far been published. Another potential advantage of living in an extreme habitat that has received no attention so far is that such habitats may act as ‘‘refuge’’ fr ...
... competition and predation and the exploitation of new niches (Romero and Green, 2005); however, very few tests of these ideas have thus far been published. Another potential advantage of living in an extreme habitat that has received no attention so far is that such habitats may act as ‘‘refuge’’ fr ...
Intraspecific priority effects and disease interact to alter population
... to foraging ecology. Faster-feeding individuals and genotypes encounter more spores, increasing infection risk (Hall et al. 2010, 2012). However, faster feeders also produce more offspring (when consuming high-quality resources; Hall et al. 2010, 2012). These dual relationships with feeding can thus ...
... to foraging ecology. Faster-feeding individuals and genotypes encounter more spores, increasing infection risk (Hall et al. 2010, 2012). However, faster feeders also produce more offspring (when consuming high-quality resources; Hall et al. 2010, 2012). These dual relationships with feeding can thus ...
Notes towards Biodiversity Chapter 5
... Extract from Wikipedia (2006B), http://en.wikipedia.org/wiki/. “Weathering is the process of disintegration of rocks, soils and their minerals through direct, or indirect contact with the atmosphere. Weathering occurs in situ, or ‘without movement’, and thus should not to be confused with erosion, w ...
... Extract from Wikipedia (2006B), http://en.wikipedia.org/wiki/. “Weathering is the process of disintegration of rocks, soils and their minerals through direct, or indirect contact with the atmosphere. Weathering occurs in situ, or ‘without movement’, and thus should not to be confused with erosion, w ...
Notes towards Biodiversity Chapter 6
... Extract from Wikipedia (2006B), http://en.wikipedia.org/wiki/. “Weathering is the process of disintegration of rocks, soils and their minerals through direct, or indirect contact with the atmosphere. Weathering occurs in situ, or ‘without movement’, and thus should not to be confused with erosion, w ...
... Extract from Wikipedia (2006B), http://en.wikipedia.org/wiki/. “Weathering is the process of disintegration of rocks, soils and their minerals through direct, or indirect contact with the atmosphere. Weathering occurs in situ, or ‘without movement’, and thus should not to be confused with erosion, w ...
8 Conflicts over biodiversity
... The variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species and of ecosystems. This is a complex definition that harbours q ...
... The variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species and of ecosystems. This is a complex definition that harbours q ...
Oryctolagus cuniculus, European Rabbit
... Rather than focusing on hunting restraint, many hunters exert efforts to reduce rabbit predators, which are not directly responsible for decline. As a very large demographic, hunters could represent a powerful force in maintaining sustainable hunting populations, if the awareness of the issue of dec ...
... Rather than focusing on hunting restraint, many hunters exert efforts to reduce rabbit predators, which are not directly responsible for decline. As a very large demographic, hunters could represent a powerful force in maintaining sustainable hunting populations, if the awareness of the issue of dec ...
1495/Chapter 14 - Toronto District Christian High School
... of a very high death rate (recall Figure 14.13 on page 478). Such crashes are frequently the result of abiotic factors such as bad weather. For example, certain species of bark beetles (which cause serious damage to forests in various parts of Canada) grow exponentially until very cold weather in ea ...
... of a very high death rate (recall Figure 14.13 on page 478). Such crashes are frequently the result of abiotic factors such as bad weather. For example, certain species of bark beetles (which cause serious damage to forests in various parts of Canada) grow exponentially until very cold weather in ea ...
CHAPTER 5. THREATS AND EMERGING CONCERNS 5.1
... For this discussion, development includes housing and urban areas, commercial and industrial areas, and tourism and recreation areas that have a substantial footprint (Salafsky et al. 2008). The U.S. Geological Survey (USGS) suggests that the threat to ecosystems from development patterns and curren ...
... For this discussion, development includes housing and urban areas, commercial and industrial areas, and tourism and recreation areas that have a substantial footprint (Salafsky et al. 2008). The U.S. Geological Survey (USGS) suggests that the threat to ecosystems from development patterns and curren ...
bakersfield cactus - Bakersfield Habitat Conservation Plan
... land. The plants are being allowed to grow for nine months in a protected facility and will then be transplanted this fall. The goal is to establish six new populations and to increase some of the smaller populations all around the Bakersfield area. There are only 33 sites left with populations of B ...
... land. The plants are being allowed to grow for nine months in a protected facility and will then be transplanted this fall. The goal is to establish six new populations and to increase some of the smaller populations all around the Bakersfield area. There are only 33 sites left with populations of B ...
Semipalmated Sandpiper (Calidris pusilla)
... average longer than those in the west, and there is evidence of separation of breeding populations during migration (Gratto-Trevor et al. 2012a). Consequently most authors distinguish between eastern (eastern Canadian Artic), central (western Canadian Artic) and western (Alaska) breeding subpopulati ...
... average longer than those in the west, and there is evidence of separation of breeding populations during migration (Gratto-Trevor et al. 2012a). Consequently most authors distinguish between eastern (eastern Canadian Artic), central (western Canadian Artic) and western (Alaska) breeding subpopulati ...
Protecting and restoring green and golden bell frog habitat
... The green and golden bell frog has gone from being one of the most commonly found frogs, present in vast numbers along the east coast of Australia, to one of the most threatened. The known range of the species has declined and become fragmented over the past 30 years, with many local populations eit ...
... The green and golden bell frog has gone from being one of the most commonly found frogs, present in vast numbers along the east coast of Australia, to one of the most threatened. The known range of the species has declined and become fragmented over the past 30 years, with many local populations eit ...
PDF, 787 KB
... ineffective in attempts to halt the decline in biodiversity of agricultural areas, and negative trends of many organism groups are still continuing despite European Union's target to halt biodiversity loss by 2010. Moreover, even though research has shown that the current measures are ineffective ...
... ineffective in attempts to halt the decline in biodiversity of agricultural areas, and negative trends of many organism groups are still continuing despite European Union's target to halt biodiversity loss by 2010. Moreover, even though research has shown that the current measures are ineffective ...
WHR Species Accounts - bpefa - Province of British Columbia
... Species Code: B-PEFA Status: Falco peregrinus anatum is Red listed in British Columbia, designated as endangered in Canada. Distribution Peregrine Falcons are found on every continent except Antarctica. They can be found breeding in the arctic tundra, through Europe, and North America, and south int ...
... Species Code: B-PEFA Status: Falco peregrinus anatum is Red listed in British Columbia, designated as endangered in Canada. Distribution Peregrine Falcons are found on every continent except Antarctica. They can be found breeding in the arctic tundra, through Europe, and North America, and south int ...
Appendix A: Freshwater Mussels
... Very little habitat information exists. Most creeper populations or site occurrences have not been assessed in many years. Ecological attributes have not been measured, and research is needed to determine population size, density, and recruitment and to assess habitat. NH DES conducted a new assessm ...
... Very little habitat information exists. Most creeper populations or site occurrences have not been assessed in many years. Ecological attributes have not been measured, and research is needed to determine population size, density, and recruitment and to assess habitat. NH DES conducted a new assessm ...
Assessing the diversity, abundance and
... The term hydrological regime incorporates wetland hydroperiod, flooding frequency and timing of inundation. Wetland hydroperiod is the length of time that the wetland holds surface water, flooding frequency is the number of times a wetland receives flood water over a given time period and timing of ...
... The term hydrological regime incorporates wetland hydroperiod, flooding frequency and timing of inundation. Wetland hydroperiod is the length of time that the wetland holds surface water, flooding frequency is the number of times a wetland receives flood water over a given time period and timing of ...
The world's richest tadpole communities show functional redundancy and low functional
... permanent (vs. temporary), and an increasing number of fish eliminate tadpoles. This results in medium-sized water bodies harbouring the highest number of tadpole species [44]. Our rainforest stream data are generally consistent with the predictions derived from these studies on ponds, although ther ...
... permanent (vs. temporary), and an increasing number of fish eliminate tadpoles. This results in medium-sized water bodies harbouring the highest number of tadpole species [44]. Our rainforest stream data are generally consistent with the predictions derived from these studies on ponds, although ther ...
An examination of multiple factors affecting community structure in
... hatchlings were allowed to grow for a few days until they were too large to pass through the screen wall. Metamorphic amphibians were caught on floating boards, resting under boards on dry pen areas, or climbing on the pen walls at night. All densities used were within the range occurring in nearby ...
... hatchlings were allowed to grow for a few days until they were too large to pass through the screen wall. Metamorphic amphibians were caught on floating boards, resting under boards on dry pen areas, or climbing on the pen walls at night. All densities used were within the range occurring in nearby ...
Living Resources - Minnesota River Basin Data Center
... acroinvertebrates are animals without backbones that can be seen with the naked eye and live at least part of their life cycles in or on the bottom of a waterbody. Macroinvertebrates (macros) include aquatic insects like mayflies, stoneflies, caddisflies, midges, and beetles as well as crayfish, wor ...
... acroinvertebrates are animals without backbones that can be seen with the naked eye and live at least part of their life cycles in or on the bottom of a waterbody. Macroinvertebrates (macros) include aquatic insects like mayflies, stoneflies, caddisflies, midges, and beetles as well as crayfish, wor ...
Monday
... physical or biological components of an ecosystem affect populations. MS-LS2-5 : Evaluate competing design solutions for maintaining biodiversity and ecosystems services. Disciplinary Core Ideas LS2 C : Ecosystem Dynamics, Functioning, and Resilience Ecosystems are dynamic in nature; their character ...
... physical or biological components of an ecosystem affect populations. MS-LS2-5 : Evaluate competing design solutions for maintaining biodiversity and ecosystems services. Disciplinary Core Ideas LS2 C : Ecosystem Dynamics, Functioning, and Resilience Ecosystems are dynamic in nature; their character ...
Freshwater Ecosystems and Biodiversity
... freshwater fishes and amphibians generally follow Physical Habitat species richness patterns. However, the southern hemisphere tends to support greater amphibian species Classifying aquatic habitat is not always straightforward endemism than the northern hemisphere (Abell et and simple. Numerous sys ...
... freshwater fishes and amphibians generally follow Physical Habitat species richness patterns. However, the southern hemisphere tends to support greater amphibian species Classifying aquatic habitat is not always straightforward endemism than the northern hemisphere (Abell et and simple. Numerous sys ...
IUCN Species Survival Commission
... change, set against a backdrop of massive habitat destruction and fragmentation. The palaeo-ecological record and contemporary observations show that climate change has profound influence on the distribution and abundance of species. An increasing number of species will be susceptible to extinction ...
... change, set against a backdrop of massive habitat destruction and fragmentation. The palaeo-ecological record and contemporary observations show that climate change has profound influence on the distribution and abundance of species. An increasing number of species will be susceptible to extinction ...
Terrestrial Fauna
... (including aquatic systems) for all or part of their lives. Terrestrial fauna includes vertebrate (birds, mammals including bats, reptiles, amphibians, and freshwater fish) and invertebrate (arachnids, crustaceans, insects, molluscs and worms) groups. Guidance for EIA concerning fauna that use subte ...
... (including aquatic systems) for all or part of their lives. Terrestrial fauna includes vertebrate (birds, mammals including bats, reptiles, amphibians, and freshwater fish) and invertebrate (arachnids, crustaceans, insects, molluscs and worms) groups. Guidance for EIA concerning fauna that use subte ...
Meadow viper Vipera ursinii
... less severe in montane areas, but conifer plantations and the construction of tourist resorts, ski runs, dams etc. have caused some loss of habitat; • Habitat fragmentation: Habitat destruction leads to habitat fragmentation, limiting population size and preventing re-colonization and genetic interc ...
... less severe in montane areas, but conifer plantations and the construction of tourist resorts, ski runs, dams etc. have caused some loss of habitat; • Habitat fragmentation: Habitat destruction leads to habitat fragmentation, limiting population size and preventing re-colonization and genetic interc ...
Population spatial structure, human
... make up the population and the probability of exchange of individuals among them. Therefore, population spatial structure depends on the interaction between the landscape spatial pattern and the dispersal characteristics of the organisms. Human activities have profound effects on population spatial ...
... make up the population and the probability of exchange of individuals among them. Therefore, population spatial structure depends on the interaction between the landscape spatial pattern and the dispersal characteristics of the organisms. Human activities have profound effects on population spatial ...
Decline in amphibian populations
Since the 1980s, declines in amphibian populations, including population crashes and mass localized extinctions, have been noted from locations all over the world. These declines are perceived as one of the most critical threats to global biodiversity, and several causes are believed to be involved, including disease, habitat destruction and modification, exploitation, pollution, pesticide use, introduced species, and ultraviolet-B radiation (UV-B). However, many of the causes of amphibian declines are still poorly understood, and the topic is currently a subject of much ongoing research. Calculations based on extinction rates suggest that the current extinction rate of amphibians could be 211 times greater than the background extinction rate and the estimate goes up to 25,000–45,000 times if endangered species are also included in the computation.