Zoobenthos in the littoral and profundal zones of four Faroese lakes
... Diaptomus were absent in the Faroese lakes. Furthermore, none of the four trichopteran species identified Fróðskaparrit 50. bók 2002: 81-9 ...
... Diaptomus were absent in the Faroese lakes. Furthermore, none of the four trichopteran species identified Fróðskaparrit 50. bók 2002: 81-9 ...
this thesis - Waddenacademie
... generated the assumption that salt marshes have to move inland in order to adjust to the rising sea level. In situations where land claim has resulted in the construction of seawalls close to the mean high water level (a common feature in the UK), salt marshes will not be able to migrate further inl ...
... generated the assumption that salt marshes have to move inland in order to adjust to the rising sea level. In situations where land claim has resulted in the construction of seawalls close to the mean high water level (a common feature in the UK), salt marshes will not be able to migrate further inl ...
Effects of gypsy moth outbreaks on North American woodpeckers
... the two North American species of cuckoos (Coccyzus erythropthalmus and C. americanus), both of which are attracted to insect outbreaks (Koenig and Liebhold 2005) and are found at significantly higher densities during gypsy moth outbreaks (Barber et al. 2008). Gypsy moth outbreaks cause extensive de ...
... the two North American species of cuckoos (Coccyzus erythropthalmus and C. americanus), both of which are attracted to insect outbreaks (Koenig and Liebhold 2005) and are found at significantly higher densities during gypsy moth outbreaks (Barber et al. 2008). Gypsy moth outbreaks cause extensive de ...
Word - 154 KB - Department of the Environment
... b) The cane toad is considered an ecological pest in Australia. It has had an extreme adverse impact on some native fauna (mostly predator species such as snakes, goannas, crocodiles, quolls) in northern Australia and the control of this pest is the focus of extensive management and research effort ...
... b) The cane toad is considered an ecological pest in Australia. It has had an extreme adverse impact on some native fauna (mostly predator species such as snakes, goannas, crocodiles, quolls) in northern Australia and the control of this pest is the focus of extensive management and research effort ...
effects of gypsy moth outbreaks on north american woodpeckers
... paper maps that were scanned and compiled in a GIS format by AML. Defoliations from 2000 to 2008 were recorded and archived directly into a GIS (Liebhold et al. 1997). For each year, we compiled all cases in which gypsy moth defoliation occurred within the range of one or both surveys (estimated to ...
... paper maps that were scanned and compiled in a GIS format by AML. Defoliations from 2000 to 2008 were recorded and archived directly into a GIS (Liebhold et al. 1997). For each year, we compiled all cases in which gypsy moth defoliation occurred within the range of one or both surveys (estimated to ...
Habitat selection by feral cats and dingoes in a
... of the size of the daily home range of feral cats in the study area (core area of approximately 20 ha: Edwards et al. 2001). A distance of 500 m was also used by Mahon et al. (1998) to classify individual feral cat tracks in a similar study. Dingoes are much more mobile than feral cats; individual d ...
... of the size of the daily home range of feral cats in the study area (core area of approximately 20 ha: Edwards et al. 2001). A distance of 500 m was also used by Mahon et al. (1998) to classify individual feral cat tracks in a similar study. Dingoes are much more mobile than feral cats; individual d ...
Survey of Seeps and Springs within the Bureau of Land
... that seeps and springs are often hot spots of biological diversity, providing habitat for many uncommon species of plants and animals, including some that proved to be new to science. In Colorado, several rare plant and animal species are known to be limited to these wet areas within otherwise dry l ...
... that seeps and springs are often hot spots of biological diversity, providing habitat for many uncommon species of plants and animals, including some that proved to be new to science. In Colorado, several rare plant and animal species are known to be limited to these wet areas within otherwise dry l ...
Species interactions - Lakeland Regional High School
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
Small mouthed Salamander (Ambystoma texanum)
... applying available recovery techniques and maintaining existing populations. In addition, based on the fact that the species inhabits a small island in Canada, it will likely always be vulnerable to human-caused stressors and natural, chance events (MacArthur and Wilson 1963). ...
... applying available recovery techniques and maintaining existing populations. In addition, based on the fact that the species inhabits a small island in Canada, it will likely always be vulnerable to human-caused stressors and natural, chance events (MacArthur and Wilson 1963). ...
Untangling the roles of parasites in food webs with
... ity are three-fold: (i) the goodness-of-fit for the model, formalized as an AUC statistic (see Supporting Information S2) on the observed predation links, which quantifies the ability of the model to correctly distinguish between observed predation links and observed non-feeding pairs; (ii) the fitt ...
... ity are three-fold: (i) the goodness-of-fit for the model, formalized as an AUC statistic (see Supporting Information S2) on the observed predation links, which quantifies the ability of the model to correctly distinguish between observed predation links and observed non-feeding pairs; (ii) the fitt ...
Chromolaena odorata ungulate grazing on ant body size and communities in
... assessed and put under manageable levels to reduce their negative impacts on the productivity of ecosystems. Invasive alien species are introduced species that are non-native, and that have adverse effects on the area that they are introduced into (Richardson & van Wilgen 2004; Raghubanshi et al. 20 ...
... assessed and put under manageable levels to reduce their negative impacts on the productivity of ecosystems. Invasive alien species are introduced species that are non-native, and that have adverse effects on the area that they are introduced into (Richardson & van Wilgen 2004; Raghubanshi et al. 20 ...
Prospective generalist invertebrate predators for conservation
... Predictions of four contingent multiple-predator effects on a common prey species derived from an empirical synthesis of multiplepredator experiments. . . . . . . . . . . . . . . . . . . . . . . . . . Mean number of functional predatory groups observed by pitfall trapping and vine beating in convent ...
... Predictions of four contingent multiple-predator effects on a common prey species derived from an empirical synthesis of multiplepredator experiments. . . . . . . . . . . . . . . . . . . . . . . . . . Mean number of functional predatory groups observed by pitfall trapping and vine beating in convent ...
The value of wildlife
... wildlife may be a source of hard currency. In Tanzania and Kenya, wildlife tourism holds either the first or second rank in exporting activity depending on the year (26). In North America, programmes have been in place for many years to document or estimate the expenditure of individuals who partici ...
... wildlife may be a source of hard currency. In Tanzania and Kenya, wildlife tourism holds either the first or second rank in exporting activity depending on the year (26). In North America, programmes have been in place for many years to document or estimate the expenditure of individuals who partici ...
Floristic patterns along an east–west gradient in grassy box
... that are often sparse in grazed sites, and because it provided a more complete record of discrete remnants, and thus was valuable for conservation planning and management purposes. This led to a high variation in plot sizes (0.04 to 56 ha, mostly 0.1 to 5 ha) that required consideration during data ...
... that are often sparse in grazed sites, and because it provided a more complete record of discrete remnants, and thus was valuable for conservation planning and management purposes. This led to a high variation in plot sizes (0.04 to 56 ha, mostly 0.1 to 5 ha) that required consideration during data ...
Examining food webs and trophic dynamics across a stream
... extremely sensitive to changes in inputs of organic matter, since most streams have detritus based food webs. For example, the exclusion of leaf litter from a detritus-based food web can be detrimental to a vertebrate predator by reducing prey availability (Johnson & Wallace, 2005). This bottom up c ...
... extremely sensitive to changes in inputs of organic matter, since most streams have detritus based food webs. For example, the exclusion of leaf litter from a detritus-based food web can be detrimental to a vertebrate predator by reducing prey availability (Johnson & Wallace, 2005). This bottom up c ...
IMPACTS OF FREE-RANGING DOMESTIC CATS (FELIS CATUS
... many cats may exceed fifty times this number. A number of peer-reviewed publications on cat predation of birds and other animals report information provided by cat owners on cats’ prey returns. These demonstrate various minimum averages of pet cat predation rates on birds in the United States, inclu ...
... many cats may exceed fifty times this number. A number of peer-reviewed publications on cat predation of birds and other animals report information provided by cat owners on cats’ prey returns. These demonstrate various minimum averages of pet cat predation rates on birds in the United States, inclu ...
Marsh Bird Breeding Habitat
... Their annual fall migrations concentrate these species of bats at stopover areas. The location and characteristics of stopover habitats are generally unknown. Information Sources OMNR for possible locations and contact for local experts University Biology Departments with bat experts. ...
... Their annual fall migrations concentrate these species of bats at stopover areas. The location and characteristics of stopover habitats are generally unknown. Information Sources OMNR for possible locations and contact for local experts University Biology Departments with bat experts. ...
Head-Scratching Method in Swallows Depends on Behavioral Context
... observed by Burtt, but was not limited to such occurrences as illustrated by one Tree Swallow (Tuchycineta bicolor) observed head-scratching while gliding over a field. Head-scratching with the wings extended may not be analogous to head-scratching when perched with the wings folded. Nonetheless, sw ...
... observed by Burtt, but was not limited to such occurrences as illustrated by one Tree Swallow (Tuchycineta bicolor) observed head-scratching while gliding over a field. Head-scratching with the wings extended may not be analogous to head-scratching when perched with the wings folded. Nonetheless, sw ...
10 OLD WORLD CLIMBING FERN PEST STATUS OF
... HISTORY OF BIOLOGICAL CONTROL EFFORTS IN THE EASTERN UNITED STATES Area of Origin of Weed While the native range of L. microphyllum is well defined, it is very large and the area(s) of origin of the plants that have become invasive in Florida is unknown. To attempt to identify the region(s) of origi ...
... HISTORY OF BIOLOGICAL CONTROL EFFORTS IN THE EASTERN UNITED STATES Area of Origin of Weed While the native range of L. microphyllum is well defined, it is very large and the area(s) of origin of the plants that have become invasive in Florida is unknown. To attempt to identify the region(s) of origi ...
Railhead Scrub Preserve, land management plan.
... The Conservation Collier Program acquired the Railhead Preserve in 2004. The preserve includes approximately 70 acres of upland habitats, primarily Xeric Uplands (Scrub/Scrubby Flatwoods) and Mesic Flatwoods; and 10 acres of wetland habitats including Dome Swamp and Depression Marsh. The project was ...
... The Conservation Collier Program acquired the Railhead Preserve in 2004. The preserve includes approximately 70 acres of upland habitats, primarily Xeric Uplands (Scrub/Scrubby Flatwoods) and Mesic Flatwoods; and 10 acres of wetland habitats including Dome Swamp and Depression Marsh. The project was ...
The spatial and temporal components of functional connectivity in
... probably been valuable dispersers of grassland plant species in the past (Auffret 2011). On Selaön, both the human population and livestock numbers have generally declined alongside grassland loss (Fig. 4), and at the same time, their movement has become restricted through both management change an ...
... probably been valuable dispersers of grassland plant species in the past (Auffret 2011). On Selaön, both the human population and livestock numbers have generally declined alongside grassland loss (Fig. 4), and at the same time, their movement has become restricted through both management change an ...
Clearing/thinning of native vegetation known as invasive native
... Vegetation Act 2003, the NSW Government through the-then Department of Infrastructure, Planning and Natural Resources undertook a comprehensive public consultation process. Part of this process involved the release of a Discussion Paper from the Department’s Science and Information Board (SIB), Clea ...
... Vegetation Act 2003, the NSW Government through the-then Department of Infrastructure, Planning and Natural Resources undertook a comprehensive public consultation process. Part of this process involved the release of a Discussion Paper from the Department’s Science and Information Board (SIB), Clea ...
Prairie Seed Harvesting
... species that are rare, uncommon, seed early or late in the season, or occur in isolated and small patches are usually best harvested by hand. The collection of seed by hand is a unique educational and rewarding experience and helps those who participate become intimately involved with the prairie re ...
... species that are rare, uncommon, seed early or late in the season, or occur in isolated and small patches are usually best harvested by hand. The collection of seed by hand is a unique educational and rewarding experience and helps those who participate become intimately involved with the prairie re ...
guidelines for urban forest restoration
... techniques with a broad range of practitioners across the country. Key documents related to improving the practice of urban ecological restoration have emerged from this fruitful communication. Publications such as the Nature Conservancy’s Element Stewardship Abstracts, the Society of Ecological Res ...
... techniques with a broad range of practitioners across the country. Key documents related to improving the practice of urban ecological restoration have emerged from this fruitful communication. Publications such as the Nature Conservancy’s Element Stewardship Abstracts, the Society of Ecological Res ...
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.