Oregon Spotted Frog (Rana pretiosa)
... The greatest threat to the species in Canada is continuing loss of suitable wetlands and associated terrestrial habitat and accompanying habitat fragmentation and population isolation. Additional threats include alteration of site hydrology, which can adversely affect egg-laying habitat and increase ...
... The greatest threat to the species in Canada is continuing loss of suitable wetlands and associated terrestrial habitat and accompanying habitat fragmentation and population isolation. Additional threats include alteration of site hydrology, which can adversely affect egg-laying habitat and increase ...
714.pdf
... large wildfires, invaded by nonnative plants, and developed for energy resources (gas, oil, and wind). Management on public lands, which contain 70% of sagebrush habitats, has changed over the last 30 years from large sagebrush control projects directed at enhancing livestock grazing to a greater em ...
... large wildfires, invaded by nonnative plants, and developed for energy resources (gas, oil, and wind). Management on public lands, which contain 70% of sagebrush habitats, has changed over the last 30 years from large sagebrush control projects directed at enhancing livestock grazing to a greater em ...
Gotzek, D., H. J. Axen, A. V. Suarez, C. S.H., and D. D. Shoemaker
... Distribution of the crazy ant The ant has spread from the buildings on the west of the island into the central woodland areas and the open ground of the tern colony in the north. In 2001, 70 ha of the island were occupied by the ant, with the southern and eastern parts of the island remaining ant fr ...
... Distribution of the crazy ant The ant has spread from the buildings on the west of the island into the central woodland areas and the open ground of the tern colony in the north. In 2001, 70 ha of the island were occupied by the ant, with the southern and eastern parts of the island remaining ant fr ...
Human-Wildlife Conflict Across Urbanization Gradients
... I would like to give special thanks to Dr. Graham Tobin and Dr. Robert Brinkmann for “adopting me” by becoming my co-major professors after I was orphaned by my original major professor. I greatly appreciate your support and encouragement through that tough transition and all you have given since. I ...
... I would like to give special thanks to Dr. Graham Tobin and Dr. Robert Brinkmann for “adopting me” by becoming my co-major professors after I was orphaned by my original major professor. I greatly appreciate your support and encouragement through that tough transition and all you have given since. I ...
California Tiger Salamander Hybridization
... Only a small portion of the species’ genome has been studied to date. As previously discussed, some studies suggest that hybrid tiger salamanders with low levels of introduced alleles have increased fitness and have the same general ecological traits as native tiger salamanders, although more resear ...
... Only a small portion of the species’ genome has been studied to date. As previously discussed, some studies suggest that hybrid tiger salamanders with low levels of introduced alleles have increased fitness and have the same general ecological traits as native tiger salamanders, although more resear ...
Mutualisms in a changing world: an evolutionary
... partners have been found to adopt growth patterns that allow them to aggressively colonize weakened, dry tree tissue, facilitating their ability to exploit hosts as water becomes limiting. Is this simply a phenotypic shift, or are extreme weather patterns driving selection in this endophyte? Shifts ...
... partners have been found to adopt growth patterns that allow them to aggressively colonize weakened, dry tree tissue, facilitating their ability to exploit hosts as water becomes limiting. Is this simply a phenotypic shift, or are extreme weather patterns driving selection in this endophyte? Shifts ...
THE ECOLOGY, EVOLUTION, AND DIVERSIFICATION OF THE
... The concept of the ecological niche provides the foundation for understanding the distribution and abundance of organisms in their natural environments. Given its central importance in ecology and evolutionary biology, it is not surprising that the niche concept has been the source of a great deal o ...
... The concept of the ecological niche provides the foundation for understanding the distribution and abundance of organisms in their natural environments. Given its central importance in ecology and evolutionary biology, it is not surprising that the niche concept has been the source of a great deal o ...
Analysis of spatial and temporal variability in interactions among
... consistency in the temporal patterns of algal recovery in this hab~tat.Removal of the algal turfs had no effect on the length of fronds of C. compressa; no effect was observed on its coverage but this result was probably confounded by artifacts. In contrast, mussels had both positive and negatlve ef ...
... consistency in the temporal patterns of algal recovery in this hab~tat.Removal of the algal turfs had no effect on the length of fronds of C. compressa; no effect was observed on its coverage but this result was probably confounded by artifacts. In contrast, mussels had both positive and negatlve ef ...
Field Guide to Aquatic Invasive Species (3rd Edition)
... climates, it can act as an annual at colder latitudes, its seeds overwintering and germinating when temperatures warm2. Native Range: Australia and Pacific Islands, Africa, Asia, South and Central America, West Indies, Mexico and, according to some sources, the southeast United States (Florida, Loui ...
... climates, it can act as an annual at colder latitudes, its seeds overwintering and germinating when temperatures warm2. Native Range: Australia and Pacific Islands, Africa, Asia, South and Central America, West Indies, Mexico and, according to some sources, the southeast United States (Florida, Loui ...
Cefas D villosus control and eradication report final
... eradication methods could be applied. Factors limiting the species distribution in its natural range, such as disease and predation, were also be considered. Information will be given, where possible, on overall likelihood of success, and recommendations for future work. It should be noted that ther ...
... eradication methods could be applied. Factors limiting the species distribution in its natural range, such as disease and predation, were also be considered. Information will be given, where possible, on overall likelihood of success, and recommendations for future work. It should be noted that ther ...
Abundance and diversity of corals inside and outside the territories
... amount in the territory. The corals that are favored in territories are more important as the fraction of relative importance approaches 1. The corals that are favored in controls are more important as the fraction of relative importance approaches infinity. All coral types show differences that are ...
... amount in the territory. The corals that are favored in territories are more important as the fraction of relative importance approaches 1. The corals that are favored in controls are more important as the fraction of relative importance approaches infinity. All coral types show differences that are ...
english contents - The Field Museum
... is to interpret and conserve the earth’s biological diversity through research, education, and citizen science focused on birds. Our programs work with citizen scientists, government and nongovernment agencies across North America and beyond. We believe that bird enthusiasts of all ages and skill le ...
... is to interpret and conserve the earth’s biological diversity through research, education, and citizen science focused on birds. Our programs work with citizen scientists, government and nongovernment agencies across North America and beyond. We believe that bird enthusiasts of all ages and skill le ...
Calomys laucha
... Calomys laucha is found in the Chaco regions of South America, including those of Paraguay, central Argentina, southern Bolivia, southeastern Brazil, and Uruguay (Bilenca and Kravetz 1999). The Chaco can be divided into two sub-regions, the Chaco Austral of Argentina and the Chaco Boreal of Paraguay ...
... Calomys laucha is found in the Chaco regions of South America, including those of Paraguay, central Argentina, southern Bolivia, southeastern Brazil, and Uruguay (Bilenca and Kravetz 1999). The Chaco can be divided into two sub-regions, the Chaco Austral of Argentina and the Chaco Boreal of Paraguay ...
Food Webs and Graphs - SciTech Connect
... Trophic levels in food webs provide a way of organizing species in a community food web into feeding groups. Scientists have used various methods in classifying species in a food web into these various feeding groups. The most elementary method is to divide them into the following categories: primar ...
... Trophic levels in food webs provide a way of organizing species in a community food web into feeding groups. Scientists have used various methods in classifying species in a food web into these various feeding groups. The most elementary method is to divide them into the following categories: primar ...
AP Bio Summer Study Study Sheet
... 7. Describe the defining characteristics and evolutionary order of the following groups of vertebrates: jawless fish, Chondrichthyes, actinopterygians, amphibians, reptiles, turtles, diapsids, birds, mammals. 8. Explain how a 4-fold increase in genes in the vertebrate lineage allowed them to grow to ...
... 7. Describe the defining characteristics and evolutionary order of the following groups of vertebrates: jawless fish, Chondrichthyes, actinopterygians, amphibians, reptiles, turtles, diapsids, birds, mammals. 8. Explain how a 4-fold increase in genes in the vertebrate lineage allowed them to grow to ...
CBD Third National Report - Mauritius (English version)
... of the island’s native forests have been destroyed in the past mainly for agricultural purposes. The latest such deforestation took place in the 1970’s through to the early 1980’s when large areas of native vegetation were turned into forestry plantations (Cheke, 1987). These introductions have some ...
... of the island’s native forests have been destroyed in the past mainly for agricultural purposes. The latest such deforestation took place in the 1970’s through to the early 1980’s when large areas of native vegetation were turned into forestry plantations (Cheke, 1987). These introductions have some ...
Harmonia axyridis in Europe: spread and distribution of a non
... In a risk assessment of 31 exotic natural enemies of pest species used in biological control in Europe, H. axyridis had the second highest environmental risk index. This was based on its wide host range (i.e. multiple prey species), ability to establish and disperse, and direct and indirect effects ...
... In a risk assessment of 31 exotic natural enemies of pest species used in biological control in Europe, H. axyridis had the second highest environmental risk index. This was based on its wide host range (i.e. multiple prey species), ability to establish and disperse, and direct and indirect effects ...
2016: Invasive Species - Manitoba Forestry Association
... The 2016 North American Envirothon theme is Invasive Species: A challenge to the environment, economy, and society. Using the key objectives and theme statement provided by the North American Envirothon and the Ontario Envirothon, the Manitoba Envirothon (a core program of Think Trees – Manitoba For ...
... The 2016 North American Envirothon theme is Invasive Species: A challenge to the environment, economy, and society. Using the key objectives and theme statement provided by the North American Envirothon and the Ontario Envirothon, the Manitoba Envirothon (a core program of Think Trees – Manitoba For ...
Evaluating the role of the dingo as a trophic
... Abstract The importance of strongly interactive predators has been demonstrated in many ecosystems, and the maintenance or restoration of species interactions is a major priority in the global conservation of biodiversity. By limiting populations of prey and/or competitors, apex predators can increa ...
... Abstract The importance of strongly interactive predators has been demonstrated in many ecosystems, and the maintenance or restoration of species interactions is a major priority in the global conservation of biodiversity. By limiting populations of prey and/or competitors, apex predators can increa ...
1. Invasive species and their impacts
... The 2016 North American Envirothon theme is Invasive Species: A challenge to the environment, economy, and society. Using the key objectives and theme statement provided by the North American Envirothon and the Ontario Envirothon, the Manitoba Envirothon (a core program of Think Trees – Manitoba For ...
... The 2016 North American Envirothon theme is Invasive Species: A challenge to the environment, economy, and society. Using the key objectives and theme statement provided by the North American Envirothon and the Ontario Envirothon, the Manitoba Envirothon (a core program of Think Trees – Manitoba For ...
Greater Bilby (Macrotis lagotis)
... The Greater Bilby is a nocturnal marsupial which has a silky light grey and white coat and a long black and white crested tail with a naked spur-like tip. Bilbies have a long snout and well-developed sense of smell to aid in finding food. Their large, hairless ears are extremely useful for listening ...
... The Greater Bilby is a nocturnal marsupial which has a silky light grey and white coat and a long black and white crested tail with a naked spur-like tip. Bilbies have a long snout and well-developed sense of smell to aid in finding food. Their large, hairless ears are extremely useful for listening ...
Management of Wetlands for Wildlife
... decline of interior and ocean fish stocks, which are important foods for some species. Furthermore, the feeding habits of waterbirds vary by species and region. Most species depend on marine or estuarine habitats for some time during their annual cycle. Interior species often congregate on aquacultu ...
... decline of interior and ocean fish stocks, which are important foods for some species. Furthermore, the feeding habits of waterbirds vary by species and region. Most species depend on marine or estuarine habitats for some time during their annual cycle. Interior species often congregate on aquacultu ...
applied watershed management
... The main objectives of a sound watershed management program should therefore be to; Optimise the utilisation of land and water resources for multi-sectoral needs without compromising the ecological integrity of ecosystems, Reduce surface runoff, soil erosion, sedimentation, destruction of wetlands, ...
... The main objectives of a sound watershed management program should therefore be to; Optimise the utilisation of land and water resources for multi-sectoral needs without compromising the ecological integrity of ecosystems, Reduce surface runoff, soil erosion, sedimentation, destruction of wetlands, ...
A spatial theory for characterizing predator–multiprey interactions in
... types available across landscapes creates spatial heterogeneity in resource distribution, leading prey to aggregate spatially [4,7]. Prey species may also respond to the mere threat of predation by aggregating into refuge habitat to reduce encounter rates with predators and thereby reduce predation ...
... types available across landscapes creates spatial heterogeneity in resource distribution, leading prey to aggregate spatially [4,7]. Prey species may also respond to the mere threat of predation by aggregating into refuge habitat to reduce encounter rates with predators and thereby reduce predation ...
The consequences of scale: assessing the distribution of benthic
... level because here the biota are submersed 90% of the time everywhere (on the U.S. west coast). This design potentially allows for detection of oceanic vs. atmospheric effects over small and large spatial scales, because the marine signal is stronger at MLLW than at higher intertidal levels which are ...
... level because here the biota are submersed 90% of the time everywhere (on the U.S. west coast). This design potentially allows for detection of oceanic vs. atmospheric effects over small and large spatial scales, because the marine signal is stronger at MLLW than at higher intertidal levels which are ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.