Bay Delta Fish Ecolo..
... Recent flow regimes both harm native species and encourage non-native species ...
... Recent flow regimes both harm native species and encourage non-native species ...
View pdf - Gopher Tortoise Council
... listing under the Endangered Species Act (ESA). The CCA for the gopher tortoise has two main objectives: 1) Implementation of range-wide conservation and management focused on maintaining/enhancing tortoise habitat and populations. 2) Imparting cooperation and collaboration among the partners to all ...
... listing under the Endangered Species Act (ESA). The CCA for the gopher tortoise has two main objectives: 1) Implementation of range-wide conservation and management focused on maintaining/enhancing tortoise habitat and populations. 2) Imparting cooperation and collaboration among the partners to all ...
Using the focal species approach for conserving biodiversity in
... indicators because they have slower turnover and are more stable and their population changes are directly related to environmental change (as opposed to over and undershooting carrying capacity like some r-selected species). However, others (e.g., Caro & O’Doherty 1999) argue that indicators should ...
... indicators because they have slower turnover and are more stable and their population changes are directly related to environmental change (as opposed to over and undershooting carrying capacity like some r-selected species). However, others (e.g., Caro & O’Doherty 1999) argue that indicators should ...
Living in a landscape of fear: the impact of predation, resource
... python, Python sebae. When predator-specific landscapes of fear were combined with data on resource distribution in a spatially explicit model, the ranging behaviour of the study group could be interpreted as an adaptive response to the spatial availability of resources and the perceived risk of pred ...
... python, Python sebae. When predator-specific landscapes of fear were combined with data on resource distribution in a spatially explicit model, the ranging behaviour of the study group could be interpreted as an adaptive response to the spatial availability of resources and the perceived risk of pred ...
Large Marine Ecosystems (LMEs): Preserving ocean biodiversity, and marine genetic resources
... Fish is a globally important trading good Impact on the environment Trawling may destroy sea floor Dynamite fishing destroys coral reefs Impact on other species Fishing as such changes biodiversity Species are diminished, others enhanced ...
... Fish is a globally important trading good Impact on the environment Trawling may destroy sea floor Dynamite fishing destroys coral reefs Impact on other species Fishing as such changes biodiversity Species are diminished, others enhanced ...
Effects on Plant and Animal Communities
... species) (Best and others 1990). In Charlotte County Virginia, wildlife biologists studied bird communities along channelized streams where all the woody vegetation had been removed from the streambank (Ferguson and others 1975). They found an increase in bird species diversity and density and more ...
... species) (Best and others 1990). In Charlotte County Virginia, wildlife biologists studied bird communities along channelized streams where all the woody vegetation had been removed from the streambank (Ferguson and others 1975). They found an increase in bird species diversity and density and more ...
s US VIRGIN ISLANDS - BirdLife Data Zone
... exotic plants (for landscaping) and animal pests (especially domestic cats, dogs, and chickens that roam or become feral). Many domestic septic systems are not maintained or do not function and contaminate bays with sewage. This humaninduced destruction and fragmentation has left ecosystems less abl ...
... exotic plants (for landscaping) and animal pests (especially domestic cats, dogs, and chickens that roam or become feral). Many domestic septic systems are not maintained or do not function and contaminate bays with sewage. This humaninduced destruction and fragmentation has left ecosystems less abl ...
PopBio 2012 Abstracts - Department of Evolutionary Biology and
... Understanding the role of disturbances in shaping communities is an unresolved topic. The dispute has two aspects: first, disturbances with different characteristics may have different effects on the ecosystem. S ...
... Understanding the role of disturbances in shaping communities is an unresolved topic. The dispute has two aspects: first, disturbances with different characteristics may have different effects on the ecosystem. S ...
Non-indigenous species
... This number of non-indigenous fish species recorded in Malta excludes the presence of Siganus rivulatus, for which Malta is listed as one locality of occurrence in the FishBase, DAISIE factsheet and IUCN Red List. As stated in Schembri, P.J.; Deidun, A. & Falzon, M.A. 2012. One Siganus or two? On th ...
... This number of non-indigenous fish species recorded in Malta excludes the presence of Siganus rivulatus, for which Malta is listed as one locality of occurrence in the FishBase, DAISIE factsheet and IUCN Red List. As stated in Schembri, P.J.; Deidun, A. & Falzon, M.A. 2012. One Siganus or two? On th ...
Living Resources - Minnesota River Basin Data Center
... acroinvertebrates are animals without backbones that can be seen with the naked eye and live at least part of their life cycles in or on the bottom of a waterbody. Macroinvertebrates (macros) include aquatic insects like mayflies, stoneflies, caddisflies, midges, and beetles as well as crayfish, wor ...
... acroinvertebrates are animals without backbones that can be seen with the naked eye and live at least part of their life cycles in or on the bottom of a waterbody. Macroinvertebrates (macros) include aquatic insects like mayflies, stoneflies, caddisflies, midges, and beetles as well as crayfish, wor ...
Biodiversity and Ecosystem Functioning
... support results from recent theoretical models which predict that decreasing plant diversity leads to lower plant productivity. These models predict that diversity and composition are approximately equal in importance as determinants of ecosystem functioning. Two possible mechanisms have been identi ...
... support results from recent theoretical models which predict that decreasing plant diversity leads to lower plant productivity. These models predict that diversity and composition are approximately equal in importance as determinants of ecosystem functioning. Two possible mechanisms have been identi ...
Kawau Island Fauna - Department of Conservation
... nights male and female calls are recorded and plotted, together with habitat characteristics and weather conditions. Kiwi tend to live in pairs, forming monogamous couples generally for life. Some bonds have been known to last 30 years. They are extremely territorial birds that protect their patch ( ...
... nights male and female calls are recorded and plotted, together with habitat characteristics and weather conditions. Kiwi tend to live in pairs, forming monogamous couples generally for life. Some bonds have been known to last 30 years. They are extremely territorial birds that protect their patch ( ...
Middle Rio Grande Basin
... health and diversity of Middle Rio Grande Basin ecosystems — the forests, grasslands, and shrublands, and the species that inhabit them. Many organizations, including federal, state, municipal, tribal, and private entities, have contributed to these efforts, with some success. For example, the Middl ...
... health and diversity of Middle Rio Grande Basin ecosystems — the forests, grasslands, and shrublands, and the species that inhabit them. Many organizations, including federal, state, municipal, tribal, and private entities, have contributed to these efforts, with some success. For example, the Middl ...
Gray Ratsnake (Elaphe spiloides) - Registre public des espèces en
... habitat in the Carolinian region is severely restricted and heavily fragmented, and it is unknown whether enough habitat remains to support viable populations of ratsnakes. Suitable habitat on the Frontenac Axis is much more abundant, but increased recreational activity in the area has led to incre ...
... habitat in the Carolinian region is severely restricted and heavily fragmented, and it is unknown whether enough habitat remains to support viable populations of ratsnakes. Suitable habitat on the Frontenac Axis is much more abundant, but increased recreational activity in the area has led to incre ...
Characterizing Nekton use of the Largest Unfished Oyster Reef in
... Sampling was conducted biannually from fall 2011 to spring 2013 (4 sampling periods). Thirty fixed locations were visited during each sampling trip: 12 oyster reef, 6 marsh edge, 6 nonvegetated shallow bottom (<3 m), and 6 nonvegetated deep bottom (>3 m) habitats (Fig. 1). Equal numbers of oyster ree ...
... Sampling was conducted biannually from fall 2011 to spring 2013 (4 sampling periods). Thirty fixed locations were visited during each sampling trip: 12 oyster reef, 6 marsh edge, 6 nonvegetated shallow bottom (<3 m), and 6 nonvegetated deep bottom (>3 m) habitats (Fig. 1). Equal numbers of oyster ree ...
Protecting threatened species and ecological communities from
... By 2015, reduce by at least 10% the impacts of invasive species on threatened species and ecological communities in terrestrial, aquatic and marine environments. On its release the federal Environment Minister contended that Australia was ‘one of very few countries to have committed to national meas ...
... By 2015, reduce by at least 10% the impacts of invasive species on threatened species and ecological communities in terrestrial, aquatic and marine environments. On its release the federal Environment Minister contended that Australia was ‘one of very few countries to have committed to national meas ...
Vegetation Cover Changes in Ngorongoro Conservation Area from
... Conservation Ordinance of 1959, which was later modified by the Game Park Laws (Amendment) Act No. 14 of 1975. Since its inception, the NCA has demonstrated two distinct approaches to multiple land-use management in the area. From 1959 to approximately 1975, the NCA allowed the wildlife conservation ...
... Conservation Ordinance of 1959, which was later modified by the Game Park Laws (Amendment) Act No. 14 of 1975. Since its inception, the NCA has demonstrated two distinct approaches to multiple land-use management in the area. From 1959 to approximately 1975, the NCA allowed the wildlife conservation ...
Mammals of Manitoba - Manitoba Forestry Association
... Special features – Muskrats are well adapted to their aquatic lifestyle. Although their feet are not webbed, their hind feet have special hairs to make swimming easier. They can also conserve oxygen through the limiting of blood to essential organs, staying underwater for up to 17 minutes. As with ...
... Special features – Muskrats are well adapted to their aquatic lifestyle. Although their feet are not webbed, their hind feet have special hairs to make swimming easier. They can also conserve oxygen through the limiting of blood to essential organs, staying underwater for up to 17 minutes. As with ...
Gunārs Pētersons. Distribution patterns and seasonal migration of bat
... pattern of occurrence of bat species are essential prerequisites to ensure their conservation. A major study on the status of bat species in Latvia in the period before 1977 was carried out by Ināra Buša (Буша 1980), summarized data both from her own studies and those of other researchers, mainly ba ...
... pattern of occurrence of bat species are essential prerequisites to ensure their conservation. A major study on the status of bat species in Latvia in the period before 1977 was carried out by Ināra Buša (Буша 1980), summarized data both from her own studies and those of other researchers, mainly ba ...
Report_Civet Cat
... Worldwide: This species has been found in a wide range of habitats including evergreen and deciduous forest (primary and secondary), plantations and near humans, in habitats up to 2,400 m (Ratnam et al., 1995; Heydon and Bulloh, 1996; Duckworth 1997; Azlan, 2003; Heaney et al. 2004; Su Su, 2005; Wel ...
... Worldwide: This species has been found in a wide range of habitats including evergreen and deciduous forest (primary and secondary), plantations and near humans, in habitats up to 2,400 m (Ratnam et al., 1995; Heydon and Bulloh, 1996; Duckworth 1997; Azlan, 2003; Heaney et al. 2004; Su Su, 2005; Wel ...
Draft Threatened Species Strategy
... they make in achieving the species goals. Not all conservation projects are of equal value. Some ecosystems contain numerous threatened species and a single project could achieve benefits for a greater number of species than other investments. Conservation, like any other investment, needs to be abo ...
... they make in achieving the species goals. Not all conservation projects are of equal value. Some ecosystems contain numerous threatened species and a single project could achieve benefits for a greater number of species than other investments. Conservation, like any other investment, needs to be abo ...
PDF - Revista Chilena de Historia Natural
... The Tierra del Fuego (TDF) archipelago is recognized as part of the last places on Earth that may still be considered wild. However, this condition may be threatened by the large number of invasive species present on the archipelago. These species can have significant effects on the ecology of the i ...
... The Tierra del Fuego (TDF) archipelago is recognized as part of the last places on Earth that may still be considered wild. However, this condition may be threatened by the large number of invasive species present on the archipelago. These species can have significant effects on the ecology of the i ...
Vermont`s Wildlife Heritage
... guards) are placed around trees and platform poles where ospreys are nesting to minimize the approach of predators from the ...
... guards) are placed around trees and platform poles where ospreys are nesting to minimize the approach of predators from the ...
Impact of maximum sustainable yield on competitive community
... When r1 ¼r2, K1 ¼K2 and a ¼ b, the TMSY exists and it is the global maximum (Fig. 1a and b). As the competition coefficients increase, the area of species coexistence narrows and the TMSY value decreases toward the MSY of one population. In the next example (Fig. 2) we investigate how TMSY affects po ...
... When r1 ¼r2, K1 ¼K2 and a ¼ b, the TMSY exists and it is the global maximum (Fig. 1a and b). As the competition coefficients increase, the area of species coexistence narrows and the TMSY value decreases toward the MSY of one population. In the next example (Fig. 2) we investigate how TMSY affects po ...
two degrees of separation in complex food webs
... Feeding relationships can cause invasions, extirpations, and population fluctuations of a species to dramatically affect other species within a variety of natural habitats.1-11 Such strong effects rarely propagate through food webs more than three links away from the initial perturbation.1-4 However ...
... Feeding relationships can cause invasions, extirpations, and population fluctuations of a species to dramatically affect other species within a variety of natural habitats.1-11 Such strong effects rarely propagate through food webs more than three links away from the initial perturbation.1-4 However ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.