Invasive crayfish alert!
... species can out-compete and even eat native freshwater crabs; it is also capable of affecting the many endemic crustaceans, molluscs and small fish of Lake Tanganyika causing (in the extreme) significant changes in populations and even extinctions. • These Crayfish are omnivorous and veracious feed ...
... species can out-compete and even eat native freshwater crabs; it is also capable of affecting the many endemic crustaceans, molluscs and small fish of Lake Tanganyika causing (in the extreme) significant changes in populations and even extinctions. • These Crayfish are omnivorous and veracious feed ...
Biological Diversity
... Before high-density European settlement of the region, the sheep could move freely and sometimes migrated from one mountain to another by descending into the valleys and crossing them in the winter. In this way, large numbers of sheep interbred. With the development of cattle ranches and other human ...
... Before high-density European settlement of the region, the sheep could move freely and sometimes migrated from one mountain to another by descending into the valleys and crossing them in the winter. In this way, large numbers of sheep interbred. With the development of cattle ranches and other human ...
Ecological Impacts of Alien Species
... the impacts of those species and, therefore, to provide timely advice to managers on where limited resources should be allocated. This capacity has been limited partly by the context-dependent nature of ecological impacts, research highly skewed toward certain taxa and habitat types, and the lack of ...
... the impacts of those species and, therefore, to provide timely advice to managers on where limited resources should be allocated. This capacity has been limited partly by the context-dependent nature of ecological impacts, research highly skewed toward certain taxa and habitat types, and the lack of ...
2010 Grassland earless dragon Report 10163 (1 0)
... requirements of the earless dragon, including the dominant native grassland cover, lack of trees or shrubs, low grazing level and little disturbance. However, it lacked surface rock, visible invertebrate burrows, soil cracks and in parts supported an abundance of weeds. The rocks present were mostly ...
... requirements of the earless dragon, including the dominant native grassland cover, lack of trees or shrubs, low grazing level and little disturbance. However, it lacked surface rock, visible invertebrate burrows, soil cracks and in parts supported an abundance of weeds. The rocks present were mostly ...
Concepts of disturbance, colonization and early development or
... The results on the exposed islands 1 year after the hurricane corresponded with the organism’s ability to disperse and colonize new habitats. Although the number of spider individuals averaged about one-third of the prehurricane value, Losos et al. explained how the mean number of spider species reb ...
... The results on the exposed islands 1 year after the hurricane corresponded with the organism’s ability to disperse and colonize new habitats. Although the number of spider individuals averaged about one-third of the prehurricane value, Losos et al. explained how the mean number of spider species reb ...
SCF Termit Progress Report March 2014 - 1.3 Mb
... Termit & Tin Toumma reserve depends to a large extent on building the capacity in-country to carry out the tasks needed for informed decision-making and effective park management. SCF contributes actively to this through skills development and training in biological inventory, ecolo ...
... Termit & Tin Toumma reserve depends to a large extent on building the capacity in-country to carry out the tasks needed for informed decision-making and effective park management. SCF contributes actively to this through skills development and training in biological inventory, ecolo ...
Link position statement on GMOs
... because the use of GM crops is associated with changes in agricultural practice that may lead to damaging impacts. For example, Genetically Modified Herbicide Tolerant (GMHT) crops allow farmers to apply a broad spectrum herbicide to their fields, creating a monoculture devoid of the arable weeds wh ...
... because the use of GM crops is associated with changes in agricultural practice that may lead to damaging impacts. For example, Genetically Modified Herbicide Tolerant (GMHT) crops allow farmers to apply a broad spectrum herbicide to their fields, creating a monoculture devoid of the arable weeds wh ...
Ecosystem accounting in support of environmental management
... recently prepared under the auspices of the United Nations, is one of the best placed approaches to integrate environmental and economic considerations in the various decision-making processes. Another major advantage is that this approach allows consistency with national accounts (which yield indic ...
... recently prepared under the auspices of the United Nations, is one of the best placed approaches to integrate environmental and economic considerations in the various decision-making processes. Another major advantage is that this approach allows consistency with national accounts (which yield indic ...
of the spaw protocol - Caribbean Environment Programme
... the Wild, Critically Endangered, Endangered, Vulnerable, Near Threatened or Least Concern). Additional information on ecology and habitat preferences, threats and conservation action are also collated and assessed as part of Red List process. BirdLife International is the official Red List Authority ...
... the Wild, Critically Endangered, Endangered, Vulnerable, Near Threatened or Least Concern). Additional information on ecology and habitat preferences, threats and conservation action are also collated and assessed as part of Red List process. BirdLife International is the official Red List Authority ...
Noisy Miners Manorina melanocephala
... small-medium sized bird species present in occupied habitat (Dow 1977; Grey et al. 1997, 1998; Piper and Catterall 2003; Clarke and Oldland 2007; Howes and Maron 2009). An analysis of data from across south-eastern Australia has shown that Noisy Miner densities of 0.8 birds per ha, or larger, is str ...
... small-medium sized bird species present in occupied habitat (Dow 1977; Grey et al. 1997, 1998; Piper and Catterall 2003; Clarke and Oldland 2007; Howes and Maron 2009). An analysis of data from across south-eastern Australia has shown that Noisy Miner densities of 0.8 birds per ha, or larger, is str ...
Initiatives For The Conservation Of Marine Turtles
... Carr, the pioneer of turtle biology and conservation. Already in 1966, a Marine Turtle Specialist Group was created within the World Conservation Union (IUCN), which in 1995 elaborated a general strategy for the conservation and recovery of declining turtle populations. Similarly, in 1988, the Unite ...
... Carr, the pioneer of turtle biology and conservation. Already in 1966, a Marine Turtle Specialist Group was created within the World Conservation Union (IUCN), which in 1995 elaborated a general strategy for the conservation and recovery of declining turtle populations. Similarly, in 1988, the Unite ...
IMPACTS OF BIOLOGICAL INVASIONS ON FRESHWATER
... worldwide (see, for example, Nesler & Bergersen 1991; Witte et al. 1992; Flecker & Townsend 1994; Hall & Mills 2000; Latini & Petrere 2004). Cumulative invasions have disproportionately transformed freshwater communities such that they are dominated by nonindigenous species to a greater extent than ...
... worldwide (see, for example, Nesler & Bergersen 1991; Witte et al. 1992; Flecker & Townsend 1994; Hall & Mills 2000; Latini & Petrere 2004). Cumulative invasions have disproportionately transformed freshwater communities such that they are dominated by nonindigenous species to a greater extent than ...
2014 apes review
... population has overshot the carrying capacity because it takes time: a. To produce new offspring b. To locate a compatible mate c. For organisms to further deplete resources, become weaker, and for some, to perish d. For the intrinsic rate of increase to reach equilibrium with gross primary producti ...
... population has overshot the carrying capacity because it takes time: a. To produce new offspring b. To locate a compatible mate c. For organisms to further deplete resources, become weaker, and for some, to perish d. For the intrinsic rate of increase to reach equilibrium with gross primary producti ...
Bi212CoastalFieldTripW14
... habitat for a community of typically benthic marine plants and animals. Commonly referred to as fouling communities, these nuisance assemblages of organisms superficially resemble rocky intertidal communities. Most fouling community members are attached to solid substrate or seek hiding places among ...
... habitat for a community of typically benthic marine plants and animals. Commonly referred to as fouling communities, these nuisance assemblages of organisms superficially resemble rocky intertidal communities. Most fouling community members are attached to solid substrate or seek hiding places among ...
Life 9e - Garvness
... 24. Suppose a lumber company proposes to clear-cut a large area of forest, but it aims to leave small patches of forest to provide habitat for forest animals. Which of the following is a weakness of this method of conservation? a. Small patches cannot support populations of species that require larg ...
... 24. Suppose a lumber company proposes to clear-cut a large area of forest, but it aims to leave small patches of forest to provide habitat for forest animals. Which of the following is a weakness of this method of conservation? a. Small patches cannot support populations of species that require larg ...
Hamsher - York College of Pennsylvania
... America leaves many questions about the future of wildlife in these areas. An effect of this rapid population increase is habitat fragmentation. Fragmentation separates populations of organisms from food sources, water and other con-specifics (Gaines 1997). However, while fragmentation detrimentally ...
... America leaves many questions about the future of wildlife in these areas. An effect of this rapid population increase is habitat fragmentation. Fragmentation separates populations of organisms from food sources, water and other con-specifics (Gaines 1997). However, while fragmentation detrimentally ...
Great Lakes Shorelines - Bruce Peninsula Biosphere Association
... Although limited on the Bruce Peninsula, there are occasional sandy deposits where sand beaches and dune systems have developed. Most occur along the indented and protected shoreline of Lake Huron, however, there are some deposits at Dunk’s Bay, Hope Bay and Cape Croker on Georgian Bay. The most ext ...
... Although limited on the Bruce Peninsula, there are occasional sandy deposits where sand beaches and dune systems have developed. Most occur along the indented and protected shoreline of Lake Huron, however, there are some deposits at Dunk’s Bay, Hope Bay and Cape Croker on Georgian Bay. The most ext ...
PDF
... of the clean freshwater and are predacious in nature. Hydrophylidae family are water scanvenger beetles and generally occur in shallower regions of the wetland with abundant macrophytes particularly emergent ones and feed mainly on detritus, algae and decaying vegetative matter (Khan and Ghosh, 2001 ...
... of the clean freshwater and are predacious in nature. Hydrophylidae family are water scanvenger beetles and generally occur in shallower regions of the wetland with abundant macrophytes particularly emergent ones and feed mainly on detritus, algae and decaying vegetative matter (Khan and Ghosh, 2001 ...
Impact of introduced gastropods on molluscan communities
... mer weather or to predation and competition from introduced species or a combination of both factors. The South Auckland sites outside the Hunua Ranges were divided by Goulstone (1990) into the following categories: "sites with secure reserve status which have retained bush from earlier days with a ...
... mer weather or to predation and competition from introduced species or a combination of both factors. The South Auckland sites outside the Hunua Ranges were divided by Goulstone (1990) into the following categories: "sites with secure reserve status which have retained bush from earlier days with a ...
ModelSummary - North Pacific Research Board
... • Do we need to choose one, or do we need a framework for uncertainty, to make blended model predictions? • Why general models? You can’t start building specific models in a crises, but can spawn them off a big one. ...
... • Do we need to choose one, or do we need a framework for uncertainty, to make blended model predictions? • Why general models? You can’t start building specific models in a crises, but can spawn them off a big one. ...
Heterospecific courtship, minority effects and niche separation
... competitive exclusion is instead driven by genetic drift and non-resource related selection (reviewed in Gordon, 2000). This might especially apply to phytophagous insects that often experience much lower population densities than the density of their host plant resource (Lawton & Strong, 1981), whi ...
... competitive exclusion is instead driven by genetic drift and non-resource related selection (reviewed in Gordon, 2000). This might especially apply to phytophagous insects that often experience much lower population densities than the density of their host plant resource (Lawton & Strong, 1981), whi ...
special-status species` biology and likelihood-of
... immediately adjacent to the study area). Neither the species nor any indication of its presence was detected. In some cases this likelihood may indicate that, based on the best available information, the study area has a very high probability of being outside of the species’ current range. In all of ...
... immediately adjacent to the study area). Neither the species nor any indication of its presence was detected. In some cases this likelihood may indicate that, based on the best available information, the study area has a very high probability of being outside of the species’ current range. In all of ...
S33-4 Extinction by hybridization and introgression in anatine ducks
... but is now listed as endangered. It is on the verge of disappearing as a distinct species, due to introgressive hybridization with introduced mallards (Williams and Basse, 2006). There is concern in Australia that a similar situation could develop for the gray (Pacific black) duck there. Meller’s du ...
... but is now listed as endangered. It is on the verge of disappearing as a distinct species, due to introgressive hybridization with introduced mallards (Williams and Basse, 2006). There is concern in Australia that a similar situation could develop for the gray (Pacific black) duck there. Meller’s du ...
SPECIAL-STATUS SPECIES BIOLOGY AND LIKELIHOOD OF
... LOW: The species is unlikely because of some combination of facts: (1) it was the subject of unsuccessful searches conducted under reasonable circumstances, (2) only marginal or minimal habitat is present, (3) the best available information suggests the species is absent from the Project study area ...
... LOW: The species is unlikely because of some combination of facts: (1) it was the subject of unsuccessful searches conducted under reasonable circumstances, (2) only marginal or minimal habitat is present, (3) the best available information suggests the species is absent from the Project study area ...
Questions for Invasion/Succession paper discussion
... Vitousek et al. (1987) Biological invasion by Myrica faya alters ecosystem development in Hawaii. Science 238: 802-805 Maron and Connors (1996) A native nitrogen-fixing shrub facilitates weed invasion. Oecologia 105:302-312 ...
... Vitousek et al. (1987) Biological invasion by Myrica faya alters ecosystem development in Hawaii. Science 238: 802-805 Maron and Connors (1996) A native nitrogen-fixing shrub facilitates weed invasion. Oecologia 105:302-312 ...
Biodiversity action plan
This article is about a conservation biology topic. For other uses of BAP, see BAP (disambiguation).A biodiversity action plan (BAP) is an internationally recognized program addressing threatened species and habitats and is designed to protect and restore biological systems. The original impetus for these plans derives from the 1992 Convention on Biological Diversity (CBD). As of 2009, 191 countries have ratified the CBD, but only a fraction of these have developed substantive BAP documents.The principal elements of a BAP typically include: (a) preparing inventories of biological information for selected species or habitats; (b) assessing the conservation status of species within specified ecosystems; (c) creation of targets for conservation and restoration; and (d) establishing budgets, timelines and institutional partnerships for implementing the BAP.