pdf
... populations have increased dramatically. They compete directly with native waterfowl for habitat, displacing them, and that is why they are considered an invasive species. Whitetail deer populations have increased dramatically in the northeastern U.S. and are problems in farms, yards, and natural ar ...
... populations have increased dramatically. They compete directly with native waterfowl for habitat, displacing them, and that is why they are considered an invasive species. Whitetail deer populations have increased dramatically in the northeastern U.S. and are problems in farms, yards, and natural ar ...
Read the Fite Declaration - Western Watersheds Project
... desert shrub is exceedingly difficult. The Monograph explains how lower elevation sagebrush communities have length recovery times—up to 100-200 years. In fact, if cheatgrass or other aggressive weeds invade, recovery of sagebrush may never be possible. Therefore, if the extensive planned roads are ...
... desert shrub is exceedingly difficult. The Monograph explains how lower elevation sagebrush communities have length recovery times—up to 100-200 years. In fact, if cheatgrass or other aggressive weeds invade, recovery of sagebrush may never be possible. Therefore, if the extensive planned roads are ...
a full - British Ecological Society
... connectance (May 1973). Unfortunately, there is currently no prescription for how much grouping by taxa or guild might be permissible when determining trophic connections. Cohen (1978) has discussed the point and his and other analyses (for instance, MacDonald 1979; Pimm & Lawton 1978) suggested tha ...
... connectance (May 1973). Unfortunately, there is currently no prescription for how much grouping by taxa or guild might be permissible when determining trophic connections. Cohen (1978) has discussed the point and his and other analyses (for instance, MacDonald 1979; Pimm & Lawton 1978) suggested tha ...
How does global change affect the strength of trophic interactions?
... Summary Recent research has generally shown that a small change in the number of species in a food web can have consequences both for community structure and ecosystem processes. However ‘change’ is not limited to just the number of species in a community, but might include an alteration to such pro ...
... Summary Recent research has generally shown that a small change in the number of species in a food web can have consequences both for community structure and ecosystem processes. However ‘change’ is not limited to just the number of species in a community, but might include an alteration to such pro ...
Can Nordic amphibians be saved?
... New homes for Norway’s rare pool frogs Pool frogs (Rana lessonae) were first recorded in Norway as recently as 1986, but monitoring of their population only began 10 years later. The small population, found in three ponds in the county of Aust-Agder, fluctuated around levels of 15–50 adults of repro ...
... New homes for Norway’s rare pool frogs Pool frogs (Rana lessonae) were first recorded in Norway as recently as 1986, but monitoring of their population only began 10 years later. The small population, found in three ponds in the county of Aust-Agder, fluctuated around levels of 15–50 adults of repro ...
extinction-proneness of island species
... exhaustively as certain islands are just as dominated in these areas as islands by exotic species. The consequences for biodiversity may often be greater on islands simply because islands are smaller, a point I will return to below. ...
... exhaustively as certain islands are just as dominated in these areas as islands by exotic species. The consequences for biodiversity may often be greater on islands simply because islands are smaller, a point I will return to below. ...
Abstract, 1. Introduction, 2. Methodology and 3. Ecological character
... which are not well represented in existing protected natural areas, and to retain the greatest possible diversity of landform and vegetation patterns consistent with what was originally present. To achieve this, representative biological and landscape features that are common or extensive within an ...
... which are not well represented in existing protected natural areas, and to retain the greatest possible diversity of landform and vegetation patterns consistent with what was originally present. To achieve this, representative biological and landscape features that are common or extensive within an ...
Invasive Species Definition Clarification and Guidance White Paper
... populations have increased dramatically. They compete directly with native waterfowl for habitat, displacing them, and that is why they are considered an invasive species. Whitetail deer populations have increased dramatically in the northeastern U.S. and are problems in farms, yards, and natural ar ...
... populations have increased dramatically. They compete directly with native waterfowl for habitat, displacing them, and that is why they are considered an invasive species. Whitetail deer populations have increased dramatically in the northeastern U.S. and are problems in farms, yards, and natural ar ...
Preserve Songbird Species at Risk
... and sides. They can be distinguished from their Northern Waterthrush relatives by a white eyebrow stripe. Louisiana Waterthrushes inhabit a particularly specialized habitat: pristine, steep-sided, headwater stream valleys and associated wetlands in large mature forests. Their song is led by loud, de ...
... and sides. They can be distinguished from their Northern Waterthrush relatives by a white eyebrow stripe. Louisiana Waterthrushes inhabit a particularly specialized habitat: pristine, steep-sided, headwater stream valleys and associated wetlands in large mature forests. Their song is led by loud, de ...
Effect of human disturbance on long
... Reed and Merenlender 2011). Often causes are obvious, such as anthropogenic destruction of habitat, but many human activities appear benign yet ultimately may cause population numbers to decline in an area over time. These forms of disturbance include ...
... Reed and Merenlender 2011). Often causes are obvious, such as anthropogenic destruction of habitat, but many human activities appear benign yet ultimately may cause population numbers to decline in an area over time. These forms of disturbance include ...
Bumblebees
... apples and raspberries. Unfortunately these popular and hard-working insects are in decline and urgent action is required to save them. Bumblebees have undergone a rapid decline in their range and population. There are 25 species native to the UK, but three are now extinct and six species have decli ...
... apples and raspberries. Unfortunately these popular and hard-working insects are in decline and urgent action is required to save them. Bumblebees have undergone a rapid decline in their range and population. There are 25 species native to the UK, but three are now extinct and six species have decli ...
Developing New Morphological, Geographic, and
... status under several different species concepts. These new datasets can help in the development of new management plans for the protection of H. naniflora. Hexastylis naniflora is afforded protection under the Endangered Species Act (ESA) and was listed as a federally “threatened” species by the US ...
... status under several different species concepts. These new datasets can help in the development of new management plans for the protection of H. naniflora. Hexastylis naniflora is afforded protection under the Endangered Species Act (ESA) and was listed as a federally “threatened” species by the US ...
Cuon alpinus, Dhole
... hog deer Axis porcinus) are very rare. This situation will likely hinder any possibility of recovery by the region's dhole populations, even if the other issues could be addressed. While not as depressed as in Indochina, prey levels in Indonesia also exist at levels much below carrying capacity (bec ...
... hog deer Axis porcinus) are very rare. This situation will likely hinder any possibility of recovery by the region's dhole populations, even if the other issues could be addressed. While not as depressed as in Indochina, prey levels in Indonesia also exist at levels much below carrying capacity (bec ...
Warwickshire Local Biodiversity Action Plan
... ditches; it can also be found in marshes, reed beds and areas of wet moorland. Much bigger than other voles, 20cm long with a tail of 11cm and weighing 80-180g, it is distinguished from the larger brown rat by its chestnut-brown fur, rounded nose, small, rounded ears that do not protrude from the fu ...
... ditches; it can also be found in marshes, reed beds and areas of wet moorland. Much bigger than other voles, 20cm long with a tail of 11cm and weighing 80-180g, it is distinguished from the larger brown rat by its chestnut-brown fur, rounded nose, small, rounded ears that do not protrude from the fu ...
What Limits Your Species
... Carrying capacity refers to the size of a population that can live indefinitely in an environment without doing that environment any harm. This applies to plants, animals or people. If the carrying capacity of the environment is exceeded, organisms die and the environment may be permanently destro ...
... Carrying capacity refers to the size of a population that can live indefinitely in an environment without doing that environment any harm. This applies to plants, animals or people. If the carrying capacity of the environment is exceeded, organisms die and the environment may be permanently destro ...
In Situ and Ex Situ Conservation: Philosophical and
... a bigger story. Organisms defend their continuing survival; ecosystems have stimulated new arrivals. Species increase their kinds, but ecosystems have increased kinds and increased the integration of kinds. The system is a kind of field with characteristics as vital for life as any property containe ...
... a bigger story. Organisms defend their continuing survival; ecosystems have stimulated new arrivals. Species increase their kinds, but ecosystems have increased kinds and increased the integration of kinds. The system is a kind of field with characteristics as vital for life as any property containe ...
Benthic use of phytoplankton blooms: Agnes M. L. Karlson
... As stated above, a prerequisite for differentiating among the possible mechanisms behind observed biodiversity-ecosystem functioning relationship is to determine the species-specific contribution to the measured process in mixed species assemblages. However, this is only possible when measuring non- ...
... As stated above, a prerequisite for differentiating among the possible mechanisms behind observed biodiversity-ecosystem functioning relationship is to determine the species-specific contribution to the measured process in mixed species assemblages. However, this is only possible when measuring non- ...
pdf - Gunnar Brehm
... ambient temperature. The large subfamily Ennominae has previously been assumed to be a group that occurs mainly at low and medium elevations. However, no decline in diversity was found in the study area. The diversity of the other large subfamily, Larentiinae, even increased from the lowest elevatio ...
... ambient temperature. The large subfamily Ennominae has previously been assumed to be a group that occurs mainly at low and medium elevations. However, no decline in diversity was found in the study area. The diversity of the other large subfamily, Larentiinae, even increased from the lowest elevatio ...
INTRODUCED ANIMALS IN HAWAII`S NATURAL AREAS
... fire tree (Mvrica faya) and banana poka (Passiflora mollissima). may be possible in some high-value and/or isolated areas. The feasibility and effects of such short-term population reductions should be investigated. Research on the long-term effects of alien birds on native communities is being plan ...
... fire tree (Mvrica faya) and banana poka (Passiflora mollissima). may be possible in some high-value and/or isolated areas. The feasibility and effects of such short-term population reductions should be investigated. Research on the long-term effects of alien birds on native communities is being plan ...
Marine monitoring in Plymouth
... • Natural England is a non-departmental public body • We are Government’s Statutory adviser on the natural environment. • Provide advice on the marine environment to sea-users and managers around England out to 12 nautical miles. • ‘ensure that the natural environment is conserved, enhanced and mana ...
... • Natural England is a non-departmental public body • We are Government’s Statutory adviser on the natural environment. • Provide advice on the marine environment to sea-users and managers around England out to 12 nautical miles. • ‘ensure that the natural environment is conserved, enhanced and mana ...
Spotted-tailed quolls - WWF
... including gliders, possums, rabbits, and even small wallabies. They like carrion (dead animals), birds and eggs as well. Small mammals, reptiles and invertebrates are also a significant part of the diet, particularly for juvenile quolls. Spotted-tailed quolls are sexually mature at two years of age. ...
... including gliders, possums, rabbits, and even small wallabies. They like carrion (dead animals), birds and eggs as well. Small mammals, reptiles and invertebrates are also a significant part of the diet, particularly for juvenile quolls. Spotted-tailed quolls are sexually mature at two years of age. ...
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.