Galapagos vertebrates: endangered status and conservation actions
... The Floreana mockingbird, Nesomimus trifasciatus, is in the Endangered category. It became extinct on Floreana Island in 1880. Its extinction is attributable to predation by dogs and feral cats, nest predation by black rats, and the disappearance of the cactus, Opuntia megasperma, caused by goats (C ...
... The Floreana mockingbird, Nesomimus trifasciatus, is in the Endangered category. It became extinct on Floreana Island in 1880. Its extinction is attributable to predation by dogs and feral cats, nest predation by black rats, and the disappearance of the cactus, Opuntia megasperma, caused by goats (C ...
Shepherd`s Tree - Department of Agriculture
... The case for including B. albitrunca for its keystone role is strong. B. albitrunca is has high value as a fodder and food source (Palmer and Pitman 1972, Brundin and Karlsson 1999). Its nutritious foliage suggests that this species obtains nutrients from ground water and perhaps also from the conce ...
... The case for including B. albitrunca for its keystone role is strong. B. albitrunca is has high value as a fodder and food source (Palmer and Pitman 1972, Brundin and Karlsson 1999). Its nutritious foliage suggests that this species obtains nutrients from ground water and perhaps also from the conce ...
True flies (Insecta: Diptera): Diversity and Endemism
... which in turn, provides nutrients for plants and support for healthy ecosystems and clean environments. Their diverse feeding habits too have insightful impact on ecosystems and the Earth as a whole. They provide varied ecosystem services. Some specific habitats and food occupied by Diptera of Himac ...
... which in turn, provides nutrients for plants and support for healthy ecosystems and clean environments. Their diverse feeding habits too have insightful impact on ecosystems and the Earth as a whole. They provide varied ecosystem services. Some specific habitats and food occupied by Diptera of Himac ...
National Wilderness Steering Committee
... parks. Pp. 123-135 in Reinventing Nature?: Responses to Postmodernism Deconstruction. Soulé, Michael E. and Gary Lease, eds. Washington, D.C. Island Press. Graber, D. M. 2003. Ecological restoration in wilderness: Natural versus wild in National Park Service wildernesses. George Wright Forum 20(3):3 ...
... parks. Pp. 123-135 in Reinventing Nature?: Responses to Postmodernism Deconstruction. Soulé, Michael E. and Gary Lease, eds. Washington, D.C. Island Press. Graber, D. M. 2003. Ecological restoration in wilderness: Natural versus wild in National Park Service wildernesses. George Wright Forum 20(3):3 ...
Guidance White Paper Number 2 Issue: WHAT CONSTITUTES
... Introduction to the Issue The re-establishment and maintenance of natural ecosystem components and processes on national park lands through intervention has become an increasingly important resources management function. This is reflected in National Park Service Management Policies (NPS 2001: 4.15, ...
... Introduction to the Issue The re-establishment and maintenance of natural ecosystem components and processes on national park lands through intervention has become an increasingly important resources management function. This is reflected in National Park Service Management Policies (NPS 2001: 4.15, ...
Ecological consequences of human niche
... agricultural crops was a complex process that carried along other species and transformed local ecosystems in diverse ways (Fig. 3 A–C). Crops often moved as part of ecological packages that included nondomesticated or weed species. In the European Neolithic, for example, some crop weeds derived ...
... agricultural crops was a complex process that carried along other species and transformed local ecosystems in diverse ways (Fig. 3 A–C). Crops often moved as part of ecological packages that included nondomesticated or weed species. In the European Neolithic, for example, some crop weeds derived ...
Sylvicapra grimmia - Endangered Wildlife Trust
... abundant within the assessment region, with a global total population size in the millions. Although bushmeat hunting may cause localised declines, the Common Duiker is resilient and should continue to exist in large numbers over its range. This species is also able to exist in agricultural landscap ...
... abundant within the assessment region, with a global total population size in the millions. Although bushmeat hunting may cause localised declines, the Common Duiker is resilient and should continue to exist in large numbers over its range. This species is also able to exist in agricultural landscap ...
Reverse latitudinal trends in species richness of pitcher-plant food webs
... open, they capture more prey and tend to have higher abundances of some species, especially bacteria and mosquitoes. However, after the initial 2–3 weeks, age of the pitcher has little effect on the component community (Miller et al. 1994). We chose to standardize our sampling at different sites by ...
... open, they capture more prey and tend to have higher abundances of some species, especially bacteria and mosquitoes. However, after the initial 2–3 weeks, age of the pitcher has little effect on the component community (Miller et al. 1994). We chose to standardize our sampling at different sites by ...
Australian seabirds
... How do seabirds and fisheries interact? Seabirds commonly feed on squid, fish and krill and are known to follow fishing vessels, aggressively competing for discarded fish and baits. The interactions between oceanic longline fishing and seabirds, particularly albatrosses and petrels, are of internati ...
... How do seabirds and fisheries interact? Seabirds commonly feed on squid, fish and krill and are known to follow fishing vessels, aggressively competing for discarded fish and baits. The interactions between oceanic longline fishing and seabirds, particularly albatrosses and petrels, are of internati ...
An Introduction to Ecology and the Biosphere Chapter 50
... The study of the distribution of organisms past and present is called biogeography. There are several factors that influence (limit) an organism’s distribution. 1) dispersal: the movement of individuals away from high population or area of origin. Dispersal can be seen when organisms move to areas w ...
... The study of the distribution of organisms past and present is called biogeography. There are several factors that influence (limit) an organism’s distribution. 1) dispersal: the movement of individuals away from high population or area of origin. Dispersal can be seen when organisms move to areas w ...
05
... The Waianae Mountains comprise one of the richest botanical regions in the Hawaiian Islands, including about 10% of the state’s rarest plant taxa (HINHP 1996). The arrival of humans, and the resulting introduction of alien species, wildfire, agricultural development, and settlement, has resulted in ...
... The Waianae Mountains comprise one of the richest botanical regions in the Hawaiian Islands, including about 10% of the state’s rarest plant taxa (HINHP 1996). The arrival of humans, and the resulting introduction of alien species, wildfire, agricultural development, and settlement, has resulted in ...
Trophic Downgrading of Planet Earth REVIEW
... to light the far-reaching impacts of trophic downgrading on the structure and dynamics of these systems. These findings suggest that trophic downgrading acts additively and synergistically with other anthropogenic impacts on nature, such as climate and land use change, habitat loss, and pollution. F ...
... to light the far-reaching impacts of trophic downgrading on the structure and dynamics of these systems. These findings suggest that trophic downgrading acts additively and synergistically with other anthropogenic impacts on nature, such as climate and land use change, habitat loss, and pollution. F ...
Trophic Downgrading of Planet Earth REVIEW
... to light the far-reaching impacts of trophic downgrading on the structure and dynamics of these systems. These findings suggest that trophic downgrading acts additively and synergistically with other anthropogenic impacts on nature, such as climate and land use change, habitat loss, and pollution. F ...
... to light the far-reaching impacts of trophic downgrading on the structure and dynamics of these systems. These findings suggest that trophic downgrading acts additively and synergistically with other anthropogenic impacts on nature, such as climate and land use change, habitat loss, and pollution. F ...
1 BIOL B242 Evolutionary Genetics: Coevolution What is
... Sometimes on “ecological islands” e.g. lakes in the North temperate zone in last 10,000 years Sticklebacks (Gasterosteus) in Canada benthic (deep water) and limnetic (shallow water) forms keep to their own habitat, mate assortatively ...
... Sometimes on “ecological islands” e.g. lakes in the North temperate zone in last 10,000 years Sticklebacks (Gasterosteus) in Canada benthic (deep water) and limnetic (shallow water) forms keep to their own habitat, mate assortatively ...
Duck Season 2016 - Birdlife Australia
... increase in the frequency and severity of drought, places threatened species at an increased risk of extinction. Disturbance from recreational activities is known to be a threat to other groups of birds (e.g. shorebirds) and hunting activities may be placing extra pressure on these species. The conc ...
... increase in the frequency and severity of drought, places threatened species at an increased risk of extinction. Disturbance from recreational activities is known to be a threat to other groups of birds (e.g. shorebirds) and hunting activities may be placing extra pressure on these species. The conc ...
Proposal - Texas Water Resources Institute
... Morphological analyses–I will obtain museum specimens of all gambusia species native to Texas (eight species) and conduct a morphological comparison using geometric morphometrics. Additionally, I will include other representatives of the family in which much is known of their ecology (e.g. Poecilia ...
... Morphological analyses–I will obtain museum specimens of all gambusia species native to Texas (eight species) and conduct a morphological comparison using geometric morphometrics. Additionally, I will include other representatives of the family in which much is known of their ecology (e.g. Poecilia ...
Keystone Species
... Father: It would be better if you said that a keystone species is a species that plays an essential role in the structure, functioning or productivity of an ecosystem. ...
... Father: It would be better if you said that a keystone species is a species that plays an essential role in the structure, functioning or productivity of an ecosystem. ...
SOC - UNESCO World Heritage Centre
... a perceptible toll on the environment. Measures have been proposed in the Draft Plan including: encouraging medium sized vehicles; cutting down the number of stay hours by introducing a shift system; reviewing the pricing system; diversification of attractions outside the Crater; and training of to ...
... a perceptible toll on the environment. Measures have been proposed in the Draft Plan including: encouraging medium sized vehicles; cutting down the number of stay hours by introducing a shift system; reviewing the pricing system; diversification of attractions outside the Crater; and training of to ...
Biodiversity Conservation and Habitat Management: An
... assist current conservation decisions. Thus, conservation biologists have been engaged for some time in attempting to find non-census indicator methods that can rapidly and reliably identify areas with disproportionately high levels of biodiversity. (F. Van Dyke, 2003) ...
... assist current conservation decisions. Thus, conservation biologists have been engaged for some time in attempting to find non-census indicator methods that can rapidly and reliably identify areas with disproportionately high levels of biodiversity. (F. Van Dyke, 2003) ...
Reintroduction: challenges and lessons for basic ecology
... at the time of release are rarely exactly the same as those prevailing before extinction, and the extinction causes are often difficult to determine and to quantifyis. Furthermore, reintroductions in developed countries - particularly reintroductions of large vertebrates - generally sup pose that th ...
... at the time of release are rarely exactly the same as those prevailing before extinction, and the extinction causes are often difficult to determine and to quantifyis. Furthermore, reintroductions in developed countries - particularly reintroductions of large vertebrates - generally sup pose that th ...
Nomination to list or delist a key threatening processes under the
... in any stage of biological development, and includes fungi and lichens, but does not include marine vegetation within the meaning of Part 7A of the Fisheries Management Act 1994. Population: a group of organisms, all of the same species, occupying a particular area. Species: of animal or plant inclu ...
... in any stage of biological development, and includes fungi and lichens, but does not include marine vegetation within the meaning of Part 7A of the Fisheries Management Act 1994. Population: a group of organisms, all of the same species, occupying a particular area. Species: of animal or plant inclu ...
Preliminary Report - Rufford Small Grants
... They are extremely dense, with 5,000 or more woody plants (>1 cm dbh) per hectare, and are dominated by the families Lauraceae, Rubiaceae and Symplocaceae. There is a sharply defined ecotone between the sholas and the grasslands that is maintained by frost and fire. Mukurti also has the northernmost ...
... They are extremely dense, with 5,000 or more woody plants (>1 cm dbh) per hectare, and are dominated by the families Lauraceae, Rubiaceae and Symplocaceae. There is a sharply defined ecotone between the sholas and the grasslands that is maintained by frost and fire. Mukurti also has the northernmost ...
Coevolution between native and invasive plant competitors
... (B). The outcome of coevolution between native and invasive species may rely in part on the relative diversity between interacting native and invasive populations for traits that affect fitness in invaded systems (B). Dotted lines indicate possible result of long-term consistency in coevolutionary a ...
... (B). The outcome of coevolution between native and invasive species may rely in part on the relative diversity between interacting native and invasive populations for traits that affect fitness in invaded systems (B). Dotted lines indicate possible result of long-term consistency in coevolutionary a ...
Using object-based segmentation to identify invasive species in
... images used in this study. Knowing when an image is captured is also important since if an ...
... images used in this study. Knowing when an image is captured is also important since if an ...
Neutral theory in community ecology and the hypothesis of
... violate this assumption to some degree, but the question is, how good an approximation is it? In ecology, there are often multiple, sufficient explanations for the same phenomenon (Chave, Muller-Landau & Levin 2002; Purves & Pacala 2005), and this is especially true of approximate explanations. The ...
... violate this assumption to some degree, but the question is, how good an approximation is it? In ecology, there are often multiple, sufficient explanations for the same phenomenon (Chave, Muller-Landau & Levin 2002; Purves & Pacala 2005), and this is especially true of approximate explanations. The ...
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.