Colony–colony interactions between highly invasive ants
... between invasive ant species remain poorly known. It is unclear how two invasive ant species would interact, should they be simultaneously introduced within the same area. Generally, in regions where multiple invasions have occurred, invasive ants do not co-exist in the same area (Lebrun & Feener, 2 ...
... between invasive ant species remain poorly known. It is unclear how two invasive ant species would interact, should they be simultaneously introduced within the same area. Generally, in regions where multiple invasions have occurred, invasive ants do not co-exist in the same area (Lebrun & Feener, 2 ...
Altitudinal zonation among lizards of the genus
... associated with different preconceptions. In particular, the community approach has often been used by those looking for (and in many cases, expecting) effects of competition among the component species (e.g., Cody & Diamond 1975). In contrast, the individualistic Grinnellian niche approach emphasiz ...
... associated with different preconceptions. In particular, the community approach has often been used by those looking for (and in many cases, expecting) effects of competition among the component species (e.g., Cody & Diamond 1975). In contrast, the individualistic Grinnellian niche approach emphasiz ...
F Meritage Institute Natural
... eligible for listing under state and federal Endangered Species Acts. Dr. Peter Moyle testified before this Board two years ago that between 1980 and 1992 the estuary experienced a 90% decline in total fish abundance, and that declines have been particularly severe in spring-spawning species such as ...
... eligible for listing under state and federal Endangered Species Acts. Dr. Peter Moyle testified before this Board two years ago that between 1980 and 1992 the estuary experienced a 90% decline in total fish abundance, and that declines have been particularly severe in spring-spawning species such as ...
Full Article - Notornis - Ornithological Society of New Zealand
... ecological restoration of native ecosystems in general (Saunders & Norton 2001). Conservation managers in New Zealand have achieved considerable success in removing a range of exotic mammals from increasingly large offshore islands, and in progressively controlling mammalian pests over larger and mo ...
... ecological restoration of native ecosystems in general (Saunders & Norton 2001). Conservation managers in New Zealand have achieved considerable success in removing a range of exotic mammals from increasingly large offshore islands, and in progressively controlling mammalian pests over larger and mo ...
Macroecology: more than the division of food and
... and institutional challenges faced by this and other highly interdisciplinary approaches. Our review of macroecology is especially timely, since it has been 20 years since the term was coined and the seminal paper published. Key words: biogeography, body size, metabolic theory, palaeoecology, range ...
... and institutional challenges faced by this and other highly interdisciplinary approaches. Our review of macroecology is especially timely, since it has been 20 years since the term was coined and the seminal paper published. Key words: biogeography, body size, metabolic theory, palaeoecology, range ...
Chapter 52- An Introduction to Ecology and the
... still much to be learned about the role of soil biodiversity in soil fertility. Simply how soils differ over the range from a forest to a desert is still a big question. Based on climate, geologic history, and biology, there are about 13,000 kinds of soil (called "series") in the United States alone ...
... still much to be learned about the role of soil biodiversity in soil fertility. Simply how soils differ over the range from a forest to a desert is still a big question. Based on climate, geologic history, and biology, there are about 13,000 kinds of soil (called "series") in the United States alone ...
Euastacus dharawalus, Fitzroy Falls Crayfish
... Euastacus dharawalus was listed in November 2011 as a “Critically Endangered Species” by the NSW Fisheries Scientific Committee, making it the first Euastacus species in Australia to be listed as Critically Endangered under any State or Federal Government conservation legislation. In 2015 Euastacus ...
... Euastacus dharawalus was listed in November 2011 as a “Critically Endangered Species” by the NSW Fisheries Scientific Committee, making it the first Euastacus species in Australia to be listed as Critically Endangered under any State or Federal Government conservation legislation. In 2015 Euastacus ...
Ecosystem management and the conservation of caribou habitat in
... modest impacts on timber supply. In some other V) About 10% of the total area within each cutareas, forest age class constraints are applied to cariblock must be retained as mature forest remnants to bou habitat to ensure that a substantial proportion mimic the structural features left behind by nat ...
... modest impacts on timber supply. In some other V) About 10% of the total area within each cutareas, forest age class constraints are applied to cariblock must be retained as mature forest remnants to bou habitat to ensure that a substantial proportion mimic the structural features left behind by nat ...
Western ringtail possum - WWF
... Western ringtail possum Threats to the western ringtail possum The western ringtail possum has disappeared from 90 per cent of its original range due to a number of threats including habitat loss due to land clearing and logging, and introduced predators such as foxes and cats. Habitat loss has res ...
... Western ringtail possum Threats to the western ringtail possum The western ringtail possum has disappeared from 90 per cent of its original range due to a number of threats including habitat loss due to land clearing and logging, and introduced predators such as foxes and cats. Habitat loss has res ...
AND Gehyra variegata) IN REMNANT HABITAT
... this species has been unable to form a metapopulation at equilibrium. In contrast, it is likely that G. variegata is maintaining its widespread distribution through a metapopulation structure. These results demonstrate the importance of the ability to form a metapopulation for a species to maintain ...
... this species has been unable to form a metapopulation at equilibrium. In contrast, it is likely that G. variegata is maintaining its widespread distribution through a metapopulation structure. These results demonstrate the importance of the ability to form a metapopulation for a species to maintain ...
The Disturbing History of Intermediate Disturbance David M
... of disturbance is reduction in the proportionate abundance of competitively dominant species. as in Connell's (1978) 'intermediate disturbance hypothesis'. Connell proposed that too little disturbance leads to low diversity through competitive exclusion. and too much disturbance eliminates species i ...
... of disturbance is reduction in the proportionate abundance of competitively dominant species. as in Connell's (1978) 'intermediate disturbance hypothesis'. Connell proposed that too little disturbance leads to low diversity through competitive exclusion. and too much disturbance eliminates species i ...
Replacing Sources with Sinks: When Do Populations Go Down the
... were taken from the literature on Red-winged Blackbirds. Estimates of annual adult survivorship, which does not differ by sex, ranged from 40.3 to 63% (Frankhauser 1967, 1971; Searcy & Yasukawa 1981; Yasukawa 1987; Yasukawa & Searcy 1995; Vierling 2000). Juvenile survivorship estimates range from 49 ...
... were taken from the literature on Red-winged Blackbirds. Estimates of annual adult survivorship, which does not differ by sex, ranged from 40.3 to 63% (Frankhauser 1967, 1971; Searcy & Yasukawa 1981; Yasukawa 1987; Yasukawa & Searcy 1995; Vierling 2000). Juvenile survivorship estimates range from 49 ...
Ecological Impacts of Alien Species
... An increased understanding of context dependence is required in order to improve our ability to predict impacts. Resource managers can play a valuable role in their initial detection and by providing information on the shifting contexts of impacts, through their observation of environmental change. ...
... An increased understanding of context dependence is required in order to improve our ability to predict impacts. Resource managers can play a valuable role in their initial detection and by providing information on the shifting contexts of impacts, through their observation of environmental change. ...
European Strategy on Invasive Alien Species
... Why does Europe need a Strategy on invasive alien species? European States are required to address invasive alien species (IAS) issues under a range of international instruments. In the biodiversity sector, these include the Convention on the Conservation of European Wildlife and Natural Habitats (B ...
... Why does Europe need a Strategy on invasive alien species? European States are required to address invasive alien species (IAS) issues under a range of international instruments. In the biodiversity sector, these include the Convention on the Conservation of European Wildlife and Natural Habitats (B ...
Station 15
... ecosystem change the conditions found in the ecosystem. For example, as soil develops in a primary succession stage, the conditions become more favorable for a different species to migrate in and inhabit the ecosystem. The new species would not have been able to exist in the ecosystem before the pio ...
... ecosystem change the conditions found in the ecosystem. For example, as soil develops in a primary succession stage, the conditions become more favorable for a different species to migrate in and inhabit the ecosystem. The new species would not have been able to exist in the ecosystem before the pio ...
Human-Wildlife Conflict worldwide
... with longer-term preventive strategies, along with techniques that are effective with diverse species. When low environmental impact strategies and traditional low cost deterrents are not effective, more invasive approaches such as regulated harvesting, wildlife translocation or human relocation sho ...
... with longer-term preventive strategies, along with techniques that are effective with diverse species. When low environmental impact strategies and traditional low cost deterrents are not effective, more invasive approaches such as regulated harvesting, wildlife translocation or human relocation sho ...
Can more K-selected species be better invaders? A case study of
... displaced each other, and has become largely dominant over previous ones, at least in the lowlands (< 100 m a.s.l.), where the four species now coexist. An exception to this pattern is that C. rosa continues to be dominant in the highlands because the climate there is unsuitable for the other specie ...
... displaced each other, and has become largely dominant over previous ones, at least in the lowlands (< 100 m a.s.l.), where the four species now coexist. An exception to this pattern is that C. rosa continues to be dominant in the highlands because the climate there is unsuitable for the other specie ...
Phylogenetic diversity promotes ecosystem stability
... divergence times (Felsenstein 1985, Harvey and Pagel 1991), then the simplest models of evolutionary change predict that the more distantly related two species are, the greater likelihood that they differ ecologically. Of course, individual traits may show idiosyncratic patterns and rates of evoluti ...
... divergence times (Felsenstein 1985, Harvey and Pagel 1991), then the simplest models of evolutionary change predict that the more distantly related two species are, the greater likelihood that they differ ecologically. Of course, individual traits may show idiosyncratic patterns and rates of evoluti ...
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... life. All adults and larvae are aquatic. The members of family Gyrinidae (whirling beetles) are found in fresh water ponds, lakes, open flowing streams etc. The members of Haliplidae (crawling water beetles) live among aquatic vegetation along the edges of ponds, lakes, streams and creeks. There abu ...
... life. All adults and larvae are aquatic. The members of family Gyrinidae (whirling beetles) are found in fresh water ponds, lakes, open flowing streams etc. The members of Haliplidae (crawling water beetles) live among aquatic vegetation along the edges of ponds, lakes, streams and creeks. There abu ...
Predicting Distribution, Habitat Suitability and the Potential Loss of
... 2003, Tordoff et al. 2002) and in particularly large trees draped in moss, lichens, orchids or other epiphytes (Harrap and Quinn 1996, Hopkins 1989). Tordoff et al. (2002) documented S. formosa in upper and lower montane evergreen forests. Both forests were relatively undisturbed and contained a hi ...
... 2003, Tordoff et al. 2002) and in particularly large trees draped in moss, lichens, orchids or other epiphytes (Harrap and Quinn 1996, Hopkins 1989). Tordoff et al. (2002) documented S. formosa in upper and lower montane evergreen forests. Both forests were relatively undisturbed and contained a hi ...
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... during which GM crops have been grown widely suggests several threats to the environment and to agricultural sustainability, but some authors also indicate possible advantages, particularly on intensive pesticide–dependent conventional crops. This view however is actively contested, and as explored ...
... during which GM crops have been grown widely suggests several threats to the environment and to agricultural sustainability, but some authors also indicate possible advantages, particularly on intensive pesticide–dependent conventional crops. This view however is actively contested, and as explored ...
S33-4 Extinction by hybridization and introgression in anatine ducks
... both sexes) or the inability of young to cope with local environmental conditions. Even if hybrids do survive well, they may be sterile or the offspring of one cross or the other may be sterile. Thus, hybridization with or without introgression can contribute to extinction of rare species, because r ...
... both sexes) or the inability of young to cope with local environmental conditions. Even if hybrids do survive well, they may be sterile or the offspring of one cross or the other may be sterile. Thus, hybridization with or without introgression can contribute to extinction of rare species, because r ...
HELCOM Red List Clangula hyemalis
... Long-tailed ducks migrate between their breeding grounds in the Arctic and the wintering sites in temperate areas and are thus exposed to threats in both ecosystems. Although the reasons for the dramatic decline of the Baltic Sea winter population are not yet understood, various pressures were ident ...
... Long-tailed ducks migrate between their breeding grounds in the Arctic and the wintering sites in temperate areas and are thus exposed to threats in both ecosystems. Although the reasons for the dramatic decline of the Baltic Sea winter population are not yet understood, various pressures were ident ...
Preston and Johnson 2010
... carnivores, including lions and hyenas increased, and the productivity of grasses decreased (Sinclair 1979; Thomas ...
... carnivores, including lions and hyenas increased, and the productivity of grasses decreased (Sinclair 1979; Thomas ...
Transgenic Crops: Implications for Biodiversity and Sustainable
... during which GM crops have been grown widely suggests several threats to the environment and to agricultural sustainability, but some authors also indicate possible advantages, particularly on intensive pesticide–dependent conventional crops. This view however is actively contested, and as explored ...
... during which GM crops have been grown widely suggests several threats to the environment and to agricultural sustainability, but some authors also indicate possible advantages, particularly on intensive pesticide–dependent conventional crops. This view however is actively contested, and as explored ...
Reconciliation ecology
Reconciliation ecology is the branch of ecology which studies ways to encourage biodiversity in human-dominated ecosystems. Michael Rosenzweig first articulated the concept in his book Win-Win Ecology, based on the theory that there is not enough area for all of earth’s biodiversity to be saved within designated nature preserves. Therefore, humans should increase biodiversity in human-dominated landscapes. By managing for biodiversity in ways that do not decrease human utility of the system, it is a ""win-win"" situation for both human use and native biodiversity. The science is based in the ecological foundation of human land-use trends and species-area relationships. It has many benefits beyond protection of biodiversity, and there are numerous examples of it around the globe. Aspects of reconciliation ecology can already be found in management legislation, but there are challenges in both public acceptance and ecological success of reconciliation attempts.