Chapter 6 ― Limiting Factors and Threats to Recovery
... Habitat access – Impaired access to spawning and/or rearing habitat. Examples include impassable culverts, delayed migration over dams, dewatered stream channels, etc. If, for example, a stream has been diked, thereby eliminating access to off-channel habitat, habitat access should be considered a p ...
... Habitat access – Impaired access to spawning and/or rearing habitat. Examples include impassable culverts, delayed migration over dams, dewatered stream channels, etc. If, for example, a stream has been diked, thereby eliminating access to off-channel habitat, habitat access should be considered a p ...
Biodiversity Management Plan for the
... 2.1.1 National Environmental Management Biodiversity Act, 2004 (Act No. 10 of 2004) 2.1.2 Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) 2.1.3 Convention on Biological Diversity (CBD) 2.1.4 Southern African Development Community (SADC) Protocol on Wildlife Co ...
... 2.1.1 National Environmental Management Biodiversity Act, 2004 (Act No. 10 of 2004) 2.1.2 Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) 2.1.3 Convention on Biological Diversity (CBD) 2.1.4 Southern African Development Community (SADC) Protocol on Wildlife Co ...
Oregon spotted frog listing - Center for Biological Diversity
... 2008). Results indicate two well-supported clades (a group of biological taxa (as species) that includes all descendants of one common ancestor) nested within the Oregon spotted frog: the Columbia clade (Trout Lake Natural Area Preserve (NAP) and Camas Prairie) and the southern Oregon clade (Wood Ri ...
... 2008). Results indicate two well-supported clades (a group of biological taxa (as species) that includes all descendants of one common ancestor) nested within the Oregon spotted frog: the Columbia clade (Trout Lake Natural Area Preserve (NAP) and Camas Prairie) and the southern Oregon clade (Wood Ri ...
Places for Wolves - Defenders of Wildlife
... wildlife conservation. Once the most widespread carnivore on Earth, wolves were eradicated for centuries across Europe, and early immigrants to North America brought with them their cultural prejudice and fear of the species. Since that time, this important keystone species—an animal vital to the st ...
... wildlife conservation. Once the most widespread carnivore on Earth, wolves were eradicated for centuries across Europe, and early immigrants to North America brought with them their cultural prejudice and fear of the species. Since that time, this important keystone species—an animal vital to the st ...
questions and answers on 1080 - National Pest Control Agencies
... Fluoroacetate is highly water–soluble. This means it is easily leached into the soil by rain. Any 1080 leaching from uneaten baits is broken down by micro-organisms into non-toxic naturally occurring substances. Consequently, 1080 does not accumulate in the soil, as some pesticides do. (DDT, for ins ...
... Fluoroacetate is highly water–soluble. This means it is easily leached into the soil by rain. Any 1080 leaching from uneaten baits is broken down by micro-organisms into non-toxic naturally occurring substances. Consequently, 1080 does not accumulate in the soil, as some pesticides do. (DDT, for ins ...
003
... site is sufficiently large to withstand removal of adult snails to the lab. NRS will not remove more than 20% of the adults from any given site to avoid negative impacts on the wild population. Also, in the ESU section of this chapter, only sites that are designated as Manage for Stability (MFS) wil ...
... site is sufficiently large to withstand removal of adult snails to the lab. NRS will not remove more than 20% of the adults from any given site to avoid negative impacts on the wild population. Also, in the ESU section of this chapter, only sites that are designated as Manage for Stability (MFS) wil ...
7th gd Ecosystems And Biomes
... Boreal Forest Biomes Most of the trees in the boreal forest are coniferous trees, trees that produce their seeds in cones and have leaves shaped like needles. Winters in the boreal forest are cold and very snowy, but summers are warm and rainy enough to melt all the snow. This biome is also know as ...
... Boreal Forest Biomes Most of the trees in the boreal forest are coniferous trees, trees that produce their seeds in cones and have leaves shaped like needles. Winters in the boreal forest are cold and very snowy, but summers are warm and rainy enough to melt all the snow. This biome is also know as ...
Managing Desert Mule Deer
... these crops can be planted, they serve as excellent sources of supplemental feed for mule deer, especially during winter months when other forages are limited. Small grains are especially attractive to mule deer and provide the bulk of the winter diet in some areas of the Panhandle. Fields developed ...
... these crops can be planted, they serve as excellent sources of supplemental feed for mule deer, especially during winter months when other forages are limited. Small grains are especially attractive to mule deer and provide the bulk of the winter diet in some areas of the Panhandle. Fields developed ...
Effects of tree species diversity on insect herbivory
... It is generally believed that tree species growing in mixed forest stands are less susceptible to insect herbivore damage than if grown in monocultures, but previous studies have been largely observational and focussed mainly on tree species richness effects. In this thesis, I examined effects of th ...
... It is generally believed that tree species growing in mixed forest stands are less susceptible to insect herbivore damage than if grown in monocultures, but previous studies have been largely observational and focussed mainly on tree species richness effects. In this thesis, I examined effects of th ...
Review of Feral Goat Regulatory and Strategic
... and environmental interests of the Western Division. The most comprehensive policy being implemented in the Western Division is the Regional Pest Management Strategy for the NPWS Far West Region National Park Estate. Given the absence of any statutory obligation for landholders to control feral goat ...
... and environmental interests of the Western Division. The most comprehensive policy being implemented in the Western Division is the Regional Pest Management Strategy for the NPWS Far West Region National Park Estate. Given the absence of any statutory obligation for landholders to control feral goat ...
oribi antelope - Conservation Breeding Specialist Group
... The main cause of the decline is loss of grassland habitat to agricultural practices such as afforestation, cropping and pastures. In addition, many remaining grassland fragments are in poor condition as a result of poor veld management and incorrect burning regimes. In addition to these threats, hu ...
... The main cause of the decline is loss of grassland habitat to agricultural practices such as afforestation, cropping and pastures. In addition, many remaining grassland fragments are in poor condition as a result of poor veld management and incorrect burning regimes. In addition to these threats, hu ...
Rainforest Regrowth Benefits
... within the forest. By blocking most of the sunlight, this closed canopy prevents the germination and growth of most weeds (which tend to be light-demanding). The moist microclimate beneath the canopy, combined with sparse fine-fuel in the ground layer, also suppresses the ignition and spread of fire ...
... within the forest. By blocking most of the sunlight, this closed canopy prevents the germination and growth of most weeds (which tend to be light-demanding). The moist microclimate beneath the canopy, combined with sparse fine-fuel in the ground layer, also suppresses the ignition and spread of fire ...
The Effects of Coral Bleaching on Coral Reef Fisheries
... species. Fisheries closures did not appear to fair better than fished areas. It was difficult to detect an effect on the fishery as the large-bodied species were not heavily impacted and we expect there will be lag effect that could take more than 10 years before this effect is evident. We found tha ...
... species. Fisheries closures did not appear to fair better than fished areas. It was difficult to detect an effect on the fishery as the large-bodied species were not heavily impacted and we expect there will be lag effect that could take more than 10 years before this effect is evident. We found tha ...
Alfalfa Trap Cropping Increases Abundance Of Key Arachnids In An
... natural enemies to reduce exotic pest densities below levels that are deleterious to crops. The key to success for classical biological control is efficient dispersion and reproductive capabilities of predators (Van Lenteren et al. 2012). Perennial crops (e.g., fruit plantations and forests) have be ...
... natural enemies to reduce exotic pest densities below levels that are deleterious to crops. The key to success for classical biological control is efficient dispersion and reproductive capabilities of predators (Van Lenteren et al. 2012). Perennial crops (e.g., fruit plantations and forests) have be ...
War on Wildlife - WildEarth Guardians
... Wildlife Services, a branch of the U.S. Department of Agriculture,1 was a major force in eliminating wolf and grizzly bear populations in the continental United States by 1940. Today, it spends over $100 million annually to kill more than one million animals– primarily birds, and hundreds of thousan ...
... Wildlife Services, a branch of the U.S. Department of Agriculture,1 was a major force in eliminating wolf and grizzly bear populations in the continental United States by 1940. Today, it spends over $100 million annually to kill more than one million animals– primarily birds, and hundreds of thousan ...
Black-footed ferrets and Siberian polecats as ecological surrogates
... especially by the need to test toxicities of chemicals on surrogates for endangered species (Banks et al. 2010; Fairchild et al. 2008; Munns 2006; Spromberg and Birge 2005). Whether an ecologically equivalent species can actually be a true surrogate is seldom tested. Managers faced with an endangere ...
... especially by the need to test toxicities of chemicals on surrogates for endangered species (Banks et al. 2010; Fairchild et al. 2008; Munns 2006; Spromberg and Birge 2005). Whether an ecologically equivalent species can actually be a true surrogate is seldom tested. Managers faced with an endangere ...
Infralittoral biotopes - The Marine Life Information Network
... Ecological and functional relationships Species in this biotope most likely compete aggressively for space. For instance, the sea anemone Metridium senile has 'catch tentacles' that are used to sting other species in the assemblage causing necrotic patches. Others may overgrow encrusting fauna and f ...
... Ecological and functional relationships Species in this biotope most likely compete aggressively for space. For instance, the sea anemone Metridium senile has 'catch tentacles' that are used to sting other species in the assemblage causing necrotic patches. Others may overgrow encrusting fauna and f ...
Full text - SFU`s Summit
... size spectra are equivalent and interchangeable representations of community structure. Key constraints on the slopes of size spectra – particularly mean community predator-to-prey-mass ratio (PPMR) – also constrain the shapes of biomass pyramids, meaning that IBPs are unlikely for closed communitie ...
... size spectra are equivalent and interchangeable representations of community structure. Key constraints on the slopes of size spectra – particularly mean community predator-to-prey-mass ratio (PPMR) – also constrain the shapes of biomass pyramids, meaning that IBPs are unlikely for closed communitie ...
LIFE HISTORY VARIATION AND DIET OF THE ENDANGERED
... laboratory studies of captive populations, and decreased reproductive success is generally the observed outcome (Charlesworth and Charlesworth 1987, Lande 1988, Ralls et al. 1988, Frankham 1994, Saccheri et al. 1998). However, while reduced reproductive success invariably leads to ever decreasing po ...
... laboratory studies of captive populations, and decreased reproductive success is generally the observed outcome (Charlesworth and Charlesworth 1987, Lande 1988, Ralls et al. 1988, Frankham 1994, Saccheri et al. 1998). However, while reduced reproductive success invariably leads to ever decreasing po ...
Interactions between organisms and the abiotic environment
... and eat it as partC Morritt of their daily diet. ...
... and eat it as partC Morritt of their daily diet. ...
McClanahan, T.N. 2002. The near future of coral reefs.
... emissions will produce an atmospheric concentration in 100 years not experienced during the past 20 million years and water temperatures above those of the past interglacial 130 000 years before present. Human influences on water temperatures, seawater chemistry (toxic substances, nutrients and arag ...
... emissions will produce an atmospheric concentration in 100 years not experienced during the past 20 million years and water temperatures above those of the past interglacial 130 000 years before present. Human influences on water temperatures, seawater chemistry (toxic substances, nutrients and arag ...
Fall/Winter 2016 - Galapagos Conservancy
... Galapagos visitors will not see a single live snail during their stay on the islands, they might notice the piles of bleached shells along some of the paths. A closer look at these piles will quickly reveal one of the most remarkable aspects about these snails — the many forms and shapes their shell ...
... Galapagos visitors will not see a single live snail during their stay on the islands, they might notice the piles of bleached shells along some of the paths. A closer look at these piles will quickly reveal one of the most remarkable aspects about these snails — the many forms and shapes their shell ...
a pdf of the full Prairie unit
... In European countries, wildlife resources were scarce. The only people who were allowed to hunt in Europe were wealthy landowners and members of royal families. In the 1800s, Euro-Americans immigrated to North Dakota. The earliest settlers depended on hunting and trapping game animals to help feed t ...
... In European countries, wildlife resources were scarce. The only people who were allowed to hunt in Europe were wealthy landowners and members of royal families. In the 1800s, Euro-Americans immigrated to North Dakota. The earliest settlers depended on hunting and trapping game animals to help feed t ...
DISTRIBUTION AND ECOLOGY OF LOWLAND PINE MARTEN
... upwards in elevation (Parmesan and Yohe, 2003). On the opposite, in the last 20 years the reduction of human-related impact on either species or their habitats has reversed the demographic trends for several mammalian carnivores, resulting in the re-colonisation of areas where they had disappeared ...
... upwards in elevation (Parmesan and Yohe, 2003). On the opposite, in the last 20 years the reduction of human-related impact on either species or their habitats has reversed the demographic trends for several mammalian carnivores, resulting in the re-colonisation of areas where they had disappeared ...
Recovery plans for Powelliphanta land snails, 2003-2013
... more Powelliphanta populations, subspecies and possibly even species that have not yet been found. Because of their late discovery and the difficulty of finding shells in dense vegetation, the conservation status of most of the snails in this section is still unclear. There are indications that the ...
... more Powelliphanta populations, subspecies and possibly even species that have not yet been found. Because of their late discovery and the difficulty of finding shells in dense vegetation, the conservation status of most of the snails in this section is still unclear. There are indications that the ...
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.