Single-species models for many
... preyed on by specialist consumers. ‘Specialists’ (for example, lynx) feed largely on one species, or are prey of a specialist predator (for example, snowshoe hares). We then estimated cycle periods and calculated scaled periods. Our focus was on generalists, because the specialists in the database a ...
... preyed on by specialist consumers. ‘Specialists’ (for example, lynx) feed largely on one species, or are prey of a specialist predator (for example, snowshoe hares). We then estimated cycle periods and calculated scaled periods. Our focus was on generalists, because the specialists in the database a ...
species extinction
... alligator organs are also said to have medicinal properties. Asian elephants are killed for their meat, hide, tusks and other body parts. In Myanmar, for example, small pieces of elephant foot are turned into a paste to treat hernias. The sun bear is just one of several bear species killed for its g ...
... alligator organs are also said to have medicinal properties. Asian elephants are killed for their meat, hide, tusks and other body parts. In Myanmar, for example, small pieces of elephant foot are turned into a paste to treat hernias. The sun bear is just one of several bear species killed for its g ...
Impacts and management of feral cats Felis catus in Australia
... (Doherty et al. 2016). They affect native species mostly through predation (Medina et al. 2011), but also through competition (Medina et al. 2014), disease transmission (Dubey 2008), and hybridisation (i.e. with the wildcat Felis silvestris; Beaumont et al. 2001). Feral cats also have socio-economi ...
... (Doherty et al. 2016). They affect native species mostly through predation (Medina et al. 2011), but also through competition (Medina et al. 2014), disease transmission (Dubey 2008), and hybridisation (i.e. with the wildcat Felis silvestris; Beaumont et al. 2001). Feral cats also have socio-economi ...
Impacts of carp in Australia
... Many of the claims regarding carp’s environmental effects are difficult to confirm because of the lack of information on waterway health before their introduction. For many waterways the decline in quality took place before the presence of carp — due to activities such as catchment clearing, removal ...
... Many of the claims regarding carp’s environmental effects are difficult to confirm because of the lack of information on waterway health before their introduction. For many waterways the decline in quality took place before the presence of carp — due to activities such as catchment clearing, removal ...
Succession on marine hard substrata: the adaptive significance of
... access to panels by many of the large, mobile invertebrate predators (e.g. asteroids, echinoids, prosobranch gastropods) obviously limits the potential importance of these animals in temperate fouling communities (Karlson, 1978; Harvell, pers. cornrn.). Nevertheless, small, less mobile invertebrate ...
... access to panels by many of the large, mobile invertebrate predators (e.g. asteroids, echinoids, prosobranch gastropods) obviously limits the potential importance of these animals in temperate fouling communities (Karlson, 1978; Harvell, pers. cornrn.). Nevertheless, small, less mobile invertebrate ...
ESDay2013MediaSample.. - Endangered Species Coalition
... Maddy. “In addition to providing exceptional care to the animals at their facilities, AZAaccredited zoos and aquariums support more than 2,640 conservation projects in 130 countries, contributing more than $160 million to these wildlife conservation projects. As poaching, deforestation and other fac ...
... Maddy. “In addition to providing exceptional care to the animals at their facilities, AZAaccredited zoos and aquariums support more than 2,640 conservation projects in 130 countries, contributing more than $160 million to these wildlife conservation projects. As poaching, deforestation and other fac ...
The role of environmental generalist species in ecosystem function
... by the breadth of environmental conditions under which they thrive. Several studies have asserted that generalists could never outperform specialists due to the inherent extra costs associated with generalists being able to accommodate multiple prey types or variable environments (i.e., ‘jack-of-all ...
... by the breadth of environmental conditions under which they thrive. Several studies have asserted that generalists could never outperform specialists due to the inherent extra costs associated with generalists being able to accommodate multiple prey types or variable environments (i.e., ‘jack-of-all ...
Hillebrand et al. 2008 Ecology - NCEAS
... Abstract. The composition of communities is strongly altered by anthropogenic manipulations of biogeochemical cycles, abiotic conditions, and trophic structure in all major ecosystems. Whereas the effects of species loss on ecosystem processes have received broad attention, the consequences of alter ...
... Abstract. The composition of communities is strongly altered by anthropogenic manipulations of biogeochemical cycles, abiotic conditions, and trophic structure in all major ecosystems. Whereas the effects of species loss on ecosystem processes have received broad attention, the consequences of alter ...
- Wiley Online Library
... analysis: Dehling et al. 2014; Spitz, Ridoux & Brind’Amour 2014; Crea, Ali & Rader 2016), we still lack a common analytical framework with which to evaluate the contribution of species traits to pairwise interactions, and at the higher level to the structure of interaction networks. Even though neut ...
... analysis: Dehling et al. 2014; Spitz, Ridoux & Brind’Amour 2014; Crea, Ali & Rader 2016), we still lack a common analytical framework with which to evaluate the contribution of species traits to pairwise interactions, and at the higher level to the structure of interaction networks. Even though neut ...
Fine-scale community and genetic structure are tightly linked in
... genetics [1,2]. Initially, most researchers in this field focused on systems in which genetic diversity in one focal species (usually a dominant plant species) influences the structure of a community of other dependent species. Members of this dependent community can exploit the focal species for fo ...
... genetics [1,2]. Initially, most researchers in this field focused on systems in which genetic diversity in one focal species (usually a dominant plant species) influences the structure of a community of other dependent species. Members of this dependent community can exploit the focal species for fo ...
Round 2 for Butterflies - Conserve Wildlife Foundation
... stream and river types, including some with some quality/habitat issues. It also occurs in the main stem Delaware. Special Concern Range has decreased slightly. Comely shiners are collected very infrequently and in low abundance. It is unclear if this species is at the edge of its range in NJ. MD th ...
... stream and river types, including some with some quality/habitat issues. It also occurs in the main stem Delaware. Special Concern Range has decreased slightly. Comely shiners are collected very infrequently and in low abundance. It is unclear if this species is at the edge of its range in NJ. MD th ...
Characterization of Biodiversity
... of biological diversity are species, the basic kinds of organisms. * Taxonomic characterization of the world's organisms is a mammoth but essential strategic task with which only limited progress has been made: just I 75 of the estimated 13 to 14 million species have so far been described, and most ...
... of biological diversity are species, the basic kinds of organisms. * Taxonomic characterization of the world's organisms is a mammoth but essential strategic task with which only limited progress has been made: just I 75 of the estimated 13 to 14 million species have so far been described, and most ...
Biological Control Introductions in Hawaii: 1890 to 1985
... The Territorial Government (Hawaii became a U.S. Territory in 1898) was apparently encouraged by the successful control of various species of scale insects, aphids, mealybugs, armyworms and other immig rant insect pests by predatory and parasitic species of insects introduced by Koebele. The territo ...
... The Territorial Government (Hawaii became a U.S. Territory in 1898) was apparently encouraged by the successful control of various species of scale insects, aphids, mealybugs, armyworms and other immig rant insect pests by predatory and parasitic species of insects introduced by Koebele. The territo ...
The Ozark/Ouachitas - Partners in Flight
... Plans, of which this document is one. These plans identify species and habitats most in need of conservation, and establish objectives for bird populations and habitats in physiographic areas (ecoregions) and states. The plans not only identify the general habitat requirements of priority species at ...
... Plans, of which this document is one. These plans identify species and habitats most in need of conservation, and establish objectives for bird populations and habitats in physiographic areas (ecoregions) and states. The plans not only identify the general habitat requirements of priority species at ...
Ecological indicator role of butterflies in Tam Dao National Park
... Pollard et al. [1975] for monitoring changes in a butterfly population (of a single species) over time and studying differences in the butterfly communities of different habitat types. This method was used in Vietnam [Spitzer et al., 1997; Vu & Yuan, 2003]. Transect work took place during 9:00am to ...
... Pollard et al. [1975] for monitoring changes in a butterfly population (of a single species) over time and studying differences in the butterfly communities of different habitat types. This method was used in Vietnam [Spitzer et al., 1997; Vu & Yuan, 2003]. Transect work took place during 9:00am to ...
Interactions among invaders: community and ecosystem effects of
... 2007; http://nas.er.usgs.gov/). In Wisconsin, Bellamya was first recorded in the 1950s (Teskey 1954). These snails prefer muddy or sandy substrates, where they feed predominantly on epiphytic benthic algae, especially diatoms (Jokinen 1982). While little is known about its ecological significance or ...
... 2007; http://nas.er.usgs.gov/). In Wisconsin, Bellamya was first recorded in the 1950s (Teskey 1954). These snails prefer muddy or sandy substrates, where they feed predominantly on epiphytic benthic algae, especially diatoms (Jokinen 1982). While little is known about its ecological significance or ...
Debut of the Seventeen-Year-Old Cicada
... trees. His findings showed that survival, estimated by reproductive output, increased more than proportionately with population density; that is, ...
... trees. His findings showed that survival, estimated by reproductive output, increased more than proportionately with population density; that is, ...
From Population to the Biosphere
... Weather is also a limiting factor. For example, an individual Agave americana actually likes to grow when it is dry. Rainfall limits reproduction, which in turn limits growth rate. Can you think of some other factors like this? Human activities can also limit the growth of populations. Such activiti ...
... Weather is also a limiting factor. For example, an individual Agave americana actually likes to grow when it is dry. Rainfall limits reproduction, which in turn limits growth rate. Can you think of some other factors like this? Human activities can also limit the growth of populations. Such activiti ...
Hybridization, speciation
... Amelanchier is common in this region… taxonomically it was found to be a mess, as almost every individual seemed different from its neighbor. In less disturbed areas the plants were more uniform… it appeared that many of the plants in the disturbed areas were hybrids, on the Blue Hills south of Bost ...
... Amelanchier is common in this region… taxonomically it was found to be a mess, as almost every individual seemed different from its neighbor. In less disturbed areas the plants were more uniform… it appeared that many of the plants in the disturbed areas were hybrids, on the Blue Hills south of Bost ...
Chapter04 - Duluth High School
... Cunningham - Cunningham - Saigo: Environmental Science 7th Ed. ...
... Cunningham - Cunningham - Saigo: Environmental Science 7th Ed. ...
The effect of habitat heterogeneity on species diversity patterns: a
... (Schoener and Schoener, 1981). Habitat patchiness affects communities because sub-populations of a species may escape local extinction in a few patches and recolonize those patches later on (Levins, 1969; Hanski, 1982, 1991; Harrison, 1991; Holt, 1992; Hanski, 1994). The greater the patchiness, th ...
... (Schoener and Schoener, 1981). Habitat patchiness affects communities because sub-populations of a species may escape local extinction in a few patches and recolonize those patches later on (Levins, 1969; Hanski, 1982, 1991; Harrison, 1991; Holt, 1992; Hanski, 1994). The greater the patchiness, th ...
An introduction to the herpetofauna of Antigua, Barbuda - Eco
... especially on the Antiguan beaches of Jabberwock, Rendezvous Bay, Turtle Bay, Green Island, Long Island, Sandy Island and Long Bay, and Barbuda’s Welcher Bay. Green turtles are scarcer and have been hunted more intensively for their meat. Though nesting has been reported on more than 20 Antiguan bea ...
... especially on the Antiguan beaches of Jabberwock, Rendezvous Bay, Turtle Bay, Green Island, Long Island, Sandy Island and Long Bay, and Barbuda’s Welcher Bay. Green turtles are scarcer and have been hunted more intensively for their meat. Though nesting has been reported on more than 20 Antiguan bea ...
frogwatch teachers` guide to frogs as indicators of
... “If you wait until the frogs and toads have croaked their last to take some action, you’ve missed the point.” Kermit the Frog (Frogs by David Badger) ...
... “If you wait until the frogs and toads have croaked their last to take some action, you’ve missed the point.” Kermit the Frog (Frogs by David Badger) ...
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.