Eradication of alien crayfish populations - GB non
... below the minimum viable population density (MVPD) (Section 1.2), should be discontinued. It is anticipated that all white-clawed crayfish resident in catchments also containing signal crayfish will be lost, unless a very substantial upstream barrier such as a large dam restricts upstream migration. ...
... below the minimum viable population density (MVPD) (Section 1.2), should be discontinued. It is anticipated that all white-clawed crayfish resident in catchments also containing signal crayfish will be lost, unless a very substantial upstream barrier such as a large dam restricts upstream migration. ...
A Strategy for Preserving Native Biodiversity in the Santa Cruz
... The endemic sandhills communities and species are naturally rare, due to their limited geographic range (Santa Cruz County) and narrow habitat specificity (inland sand outcrops). Habitat destruction due to sand quarrying, urban development, and agriculture has reduced and fragmented habitat. As a re ...
... The endemic sandhills communities and species are naturally rare, due to their limited geographic range (Santa Cruz County) and narrow habitat specificity (inland sand outcrops). Habitat destruction due to sand quarrying, urban development, and agriculture has reduced and fragmented habitat. As a re ...
PDF - Conservation Evidence
... work and to make commercial use of the work providing attribution is made to the authors (but not in any way that suggests that they endorse you or your use of the work). Attribution should include the following information: Sutherland, W.J., Dicks, L.V., Ockendon, N., and Smith, R.K. What Works in ...
... work and to make commercial use of the work providing attribution is made to the authors (but not in any way that suggests that they endorse you or your use of the work). Attribution should include the following information: Sutherland, W.J., Dicks, L.V., Ockendon, N., and Smith, R.K. What Works in ...
An Exploration of Conservation Breeding and
... techniques could accompany existing caribou conservation strategies, particularly in a context where some habitat management efforts in isolation might not be able to reverse the declines evident in many caribou populations. The International Union for the Conservation of Nature (IUCN) is the world’ ...
... techniques could accompany existing caribou conservation strategies, particularly in a context where some habitat management efforts in isolation might not be able to reverse the declines evident in many caribou populations. The International Union for the Conservation of Nature (IUCN) is the world’ ...
Draft Comprehensive Conservation Plan and Environmental Impact
... Charles M. Russell National Wildlife Refuge and UL Bend National Wildlife Refuge, and describes and evaluates four alternative plans for managing wildlife, habitat, and wildlife-dependent public use. This process has involved the development of a vision, goals, objectives, and strategies that meet t ...
... Charles M. Russell National Wildlife Refuge and UL Bend National Wildlife Refuge, and describes and evaluates four alternative plans for managing wildlife, habitat, and wildlife-dependent public use. This process has involved the development of a vision, goals, objectives, and strategies that meet t ...
Friend or foe? The relative role of earwigs as in citrus canopies
... longer active period in the Mediterranean than in other colder regions, and it was proven to be an important aphid predator in citrus canopies. A negative relationship between aphid and earwig abundance was observed, suggesting a top-down control of aphids by earwigs. This control was most likely a ...
... longer active period in the Mediterranean than in other colder regions, and it was proven to be an important aphid predator in citrus canopies. A negative relationship between aphid and earwig abundance was observed, suggesting a top-down control of aphids by earwigs. This control was most likely a ...
Western Quail Plan-111009
... population densities were based on available data or the expertise of resource professionals knowledgeable of regional conditions and populations. Because comparable population estimates for each BCR were not available, harvest estimates were used to index population size. No Plan is complete withou ...
... population densities were based on available data or the expertise of resource professionals knowledgeable of regional conditions and populations. Because comparable population estimates for each BCR were not available, harvest estimates were used to index population size. No Plan is complete withou ...
Foraging ecology and habitat use of the northern diamondback terrapin (Malaclemys terrapin terrapin) in southern Chesapeake Bay
... recognize Carol Hopper-Brill a marine education specialist with the Virginia Sea Grant Marine Advisory Program and the GK-12 program. I aspire to be as practical, creative, and fun in my teaching efforts as she is. Thank you to the VIMS Seagrass Ecology Laboratory for their expertise, the generous u ...
... recognize Carol Hopper-Brill a marine education specialist with the Virginia Sea Grant Marine Advisory Program and the GK-12 program. I aspire to be as practical, creative, and fun in my teaching efforts as she is. Thank you to the VIMS Seagrass Ecology Laboratory for their expertise, the generous u ...
Word - Fisheries and Oceans Canada
... Abalone in Canada has been prepared under the lead of Fisheries and Oceans Canada in cooperation with the Abalone Recovery Team in consultation with participants and observers to identify recovery actions that are deemed necessary, based on sound biological principles, to protect and recover the spe ...
... Abalone in Canada has been prepared under the lead of Fisheries and Oceans Canada in cooperation with the Abalone Recovery Team in consultation with participants and observers to identify recovery actions that are deemed necessary, based on sound biological principles, to protect and recover the spe ...
Coles et al.
... study, or actual disappearance of some species from the bay such as the introduced mollusk Haliotis sp. However, the results suggest that further sampling and observation would produce considerably more taxa and species. Historically, 204 nonindigenous or cryptogenic species (collectively termed NIS ...
... study, or actual disappearance of some species from the bay such as the introduced mollusk Haliotis sp. However, the results suggest that further sampling and observation would produce considerably more taxa and species. Historically, 204 nonindigenous or cryptogenic species (collectively termed NIS ...
Northern Abalone (Haliotis kamtschatkana)
... Highly valued for its meat, this marine mollusc is patchily distributed along the west coast of Canada. Despite a total moratorium on harvest in 1990, the species was designated as Threatened in 2000. Poaching is the most serious threat and continues to reduce population abundance, particularly the ...
... Highly valued for its meat, this marine mollusc is patchily distributed along the west coast of Canada. Despite a total moratorium on harvest in 1990, the species was designated as Threatened in 2000. Poaching is the most serious threat and continues to reduce population abundance, particularly the ...
Movements and hunting activity of house cats (Felis catus) living
... periphery and time of the day all influenced the movement of these cats. In comparison with a similar Australian study where the density of the surrounding house cat population was nearly three times less, the home ranges and movements of house cats in this study were small, which supports the theor ...
... periphery and time of the day all influenced the movement of these cats. In comparison with a similar Australian study where the density of the surrounding house cat population was nearly three times less, the home ranges and movements of house cats in this study were small, which supports the theor ...
Pages (PDF 2.5 MB) - IUCN Otter Specialist Group
... be noted that predation of D. mawii seems largely confined to juveniles and subadults; demographically important reproductively mature adults (CL to 650 mm; Ernst and Barbour, 1989) are probably too large to be caught and killed by foraging otters. Moreover, predation of D. mawii by L. longicaudis a ...
... be noted that predation of D. mawii seems largely confined to juveniles and subadults; demographically important reproductively mature adults (CL to 650 mm; Ernst and Barbour, 1989) are probably too large to be caught and killed by foraging otters. Moreover, predation of D. mawii by L. longicaudis a ...
GFNMS Vulnerability Assessment
... including three national marine sanctuaries, two national parks, and one US Fish and Wildlife Refuge, and one National Monument (Figure 3). Most resources considered in this assessment were identified by workshop participants as moderately vulnerable to climate change, with a range from low-moderate ...
... including three national marine sanctuaries, two national parks, and one US Fish and Wildlife Refuge, and one National Monument (Figure 3). Most resources considered in this assessment were identified by workshop participants as moderately vulnerable to climate change, with a range from low-moderate ...
giraffa vol 5(1) front page2 - Giraffe Conservation Foundation
... And it could not have been more auspicious timing. As amount of questions about giraffe research and delegates flew into Namibia from around the world, conservation management still unanswered. Largely, ...
... And it could not have been more auspicious timing. As amount of questions about giraffe research and delegates flew into Namibia from around the world, conservation management still unanswered. Largely, ...
Conservation Strategy Updated 3-16-17
... In 2006 the U.S. Fish and Wildlife Service responded to conservationists concerned that the population of NEC was declining. The Service reviewed the status of the species and the factors threatening it, and designated NEC as a “candidate” for listing under the federal Endangered Species Act. This C ...
... In 2006 the U.S. Fish and Wildlife Service responded to conservationists concerned that the population of NEC was declining. The Service reviewed the status of the species and the factors threatening it, and designated NEC as a “candidate” for listing under the federal Endangered Species Act. This C ...
Recovering a keystone species in a biodiversity hotspot - Helvia
... restocking effort by ensuring that the restocking plots are close to each other, thus avoiding isolated enclosures in order to scatter the impact of aerial predation. In turn, the following chapter shows that restocking in enclosures combined with an intensive habitat improvement around them can be ...
... restocking effort by ensuring that the restocking plots are close to each other, thus avoiding isolated enclosures in order to scatter the impact of aerial predation. In turn, the following chapter shows that restocking in enclosures combined with an intensive habitat improvement around them can be ...
predation of juvenile crassostrea virginica by two species of mud
... 37%, whereas R. harrisii preyed on 9% of available spat within 96 h. Sizes of spat preyed on ranged from 1–23 mm, but the vast majority of the spat consumed were between 1 mm and 8 mm. Because the hatchery-based restoration program in Maryland typically plants spat within this size range, these two ...
... 37%, whereas R. harrisii preyed on 9% of available spat within 96 h. Sizes of spat preyed on ranged from 1–23 mm, but the vast majority of the spat consumed were between 1 mm and 8 mm. Because the hatchery-based restoration program in Maryland typically plants spat within this size range, these two ...
2. revegetation
... the clearing of vegetated areas and soil disturbance. Revegetation requires the prior establishment of soil conditions suitable for plant growth through effective management of topsoil and the control of weeds and other site factors. All plants require water to establish and grow. For most locations ...
... the clearing of vegetated areas and soil disturbance. Revegetation requires the prior establishment of soil conditions suitable for plant growth through effective management of topsoil and the control of weeds and other site factors. All plants require water to establish and grow. For most locations ...
Ecology and Natural History of a Neotropical Savanna
... physiognomic forms, is estimated at 160,000 species of plants, animals, and fungi. Endemicity of cerrado higher plants has recently been estimated at 4,400 species, representing 1.5% of the world’s total vascular plant species. Endemic vertebrates range from 3% (birds) to 28% (amphibians) of the spe ...
... physiognomic forms, is estimated at 160,000 species of plants, animals, and fungi. Endemicity of cerrado higher plants has recently been estimated at 4,400 species, representing 1.5% of the world’s total vascular plant species. Endemic vertebrates range from 3% (birds) to 28% (amphibians) of the spe ...
Allee effects in biological invasions
... below the Allee threshold can be next to a patch with a population level above the Allee threshold; when space is continuous, the population level would need to vary smoothly and pass through the Allee threshold. We will consider the important consequences of this below while discussing range pinnin ...
... below the Allee threshold can be next to a patch with a population level above the Allee threshold; when space is continuous, the population level would need to vary smoothly and pass through the Allee threshold. We will consider the important consequences of this below while discussing range pinnin ...
Biological Synopsis of the Asian Shore Crab, Hemigrapsus
... the Schoodic Peninsula, Maine (ME) (Table 1). It was first reported from the coast of New Jersey (NJ) in 1988 with the discovery of a single female specimen thought to be at least three years of age (Williams and McDermott 1990). 2.2.2 Europe In Europe, the distribution of established populations of ...
... the Schoodic Peninsula, Maine (ME) (Table 1). It was first reported from the coast of New Jersey (NJ) in 1988 with the discovery of a single female specimen thought to be at least three years of age (Williams and McDermott 1990). 2.2.2 Europe In Europe, the distribution of established populations of ...
namibian cheetah conservation strategy
... populations of cheetah throughout the species’ range. This is a highly significant population of one of the world’s more endangered big cats. MET wants to ensure that this population is viable and effectively conserved. 2. Cooperation with private sector. However, it is not because the cheetah is in ...
... populations of cheetah throughout the species’ range. This is a highly significant population of one of the world’s more endangered big cats. MET wants to ensure that this population is viable and effectively conserved. 2. Cooperation with private sector. However, it is not because the cheetah is in ...
Schaus Swallowtail Butterfly
... undertaken between 1995 and 1997 (T. Emmel, University of Florida, personal communication 1998). There have been two possible, but unverified, sightings of Schaus swallowtail butterflies in the Lower Keys. One Schaus swallowtail butterfly was seen on Big Pine Key in 1966 (FWS 1982). Another Schaus s ...
... undertaken between 1995 and 1997 (T. Emmel, University of Florida, personal communication 1998). There have been two possible, but unverified, sightings of Schaus swallowtail butterflies in the Lower Keys. One Schaus swallowtail butterfly was seen on Big Pine Key in 1966 (FWS 1982). Another Schaus s ...
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.