Interim Management Plan for Arroyo Hondo Preserve
... is to produce professionals with unrivaled training in environmental science and management who will devote their unique skills to the diagnosis, assessment, mitigation, prevention, and remedy of the environmental problems of today and the future. A guiding principle of the School is that the analys ...
... is to produce professionals with unrivaled training in environmental science and management who will devote their unique skills to the diagnosis, assessment, mitigation, prevention, and remedy of the environmental problems of today and the future. A guiding principle of the School is that the analys ...
Armstrong–McGehee mechanism revisited_ Competitive exclusion
... operate as the sole coexistence-promoting mechanism in communities with generally nonlinear consumer–resource interactions. However, its role as a module in more complex systems and in synergy with other factors remains to be established. & 2013 Elsevier Ltd. All rights reserved. ...
... operate as the sole coexistence-promoting mechanism in communities with generally nonlinear consumer–resource interactions. However, its role as a module in more complex systems and in synergy with other factors remains to be established. & 2013 Elsevier Ltd. All rights reserved. ...
Rusty Crayfish: A Nasty Invader
... probably reduced abundance and diversity of aquatic plants. Reduced food (such as mayflies, midges, and stoneflies) and egg predation may also play a role. Because impacts and population abundance of rusty crayfish vary in lakes that appear similar, it is not possible to predict what will happen whe ...
... probably reduced abundance and diversity of aquatic plants. Reduced food (such as mayflies, midges, and stoneflies) and egg predation may also play a role. Because impacts and population abundance of rusty crayfish vary in lakes that appear similar, it is not possible to predict what will happen whe ...
Conservation Biology for All - Society for Conservation Biology
... South Korea Switzerland Thailand Turkey Ukraine Vietnam Oxford is a registered trade mark of Oxford University Press in the UK and in certain other countries Published in the United States by Oxford University Press Inc., New York # Oxford University Press 2010 The moral rights of the authors have b ...
... South Korea Switzerland Thailand Turkey Ukraine Vietnam Oxford is a registered trade mark of Oxford University Press in the UK and in certain other countries Published in the United States by Oxford University Press Inc., New York # Oxford University Press 2010 The moral rights of the authors have b ...
Marine Protected Area Establishment and
... (DENR) with support from the United States Agency for International Development (USAID). This manual was developed from various experiences of CRMP together with its partners as carried out in the learning areas particularly in the province of Bohol. Over the years of project implementation, several ...
... (DENR) with support from the United States Agency for International Development (USAID). This manual was developed from various experiences of CRMP together with its partners as carried out in the learning areas particularly in the province of Bohol. Over the years of project implementation, several ...
Conservation Management of the White
... The White-clawed Crayfish Austropotamobius pallipes (Lereboullet) is one of four crayfish species indigenous to Europe; others are the rare Stone Crayfish Austropotamobius torrentium of the Alps and Balkans; the Noble Crayfish Astacus astacus centred in Germany and Poland and the Thin-clawed or Turk ...
... The White-clawed Crayfish Austropotamobius pallipes (Lereboullet) is one of four crayfish species indigenous to Europe; others are the rare Stone Crayfish Austropotamobius torrentium of the Alps and Balkans; the Noble Crayfish Astacus astacus centred in Germany and Poland and the Thin-clawed or Turk ...
R ,
... structure and function. My results indicate that Bythotrephes reduces total abundance, biomass, and richness of zooplankton, especially cladoceran taxa, throughout the ice-free season. As a result of high predation pressure by the invader, total seasonal and epilimnetic zooplankton production was al ...
... structure and function. My results indicate that Bythotrephes reduces total abundance, biomass, and richness of zooplankton, especially cladoceran taxa, throughout the ice-free season. As a result of high predation pressure by the invader, total seasonal and epilimnetic zooplankton production was al ...
Overview of the International Symposium on Eurasian Ruffe
... competition for food between larvae of ruffe and yellow perch is unlikely, because yellow perch hatch earlier than ruffe and move to offshore pelagic waters before ruffe hatch. When ruffe hatch they occupy pelagic nearshore areas, and later become benthic. Winfield et al. (this volume) expressed con ...
... competition for food between larvae of ruffe and yellow perch is unlikely, because yellow perch hatch earlier than ruffe and move to offshore pelagic waters before ruffe hatch. When ruffe hatch they occupy pelagic nearshore areas, and later become benthic. Winfield et al. (this volume) expressed con ...
J. John Sepkoski, Jr.
... In discussing biological diversity, Norse (1993) considers hierarchical levels that range from genetic to species to ecosystem. Stress appears to decrease community diversity, often also decreasing the number of species within an individual function, such as primary production. It is critical to con ...
... In discussing biological diversity, Norse (1993) considers hierarchical levels that range from genetic to species to ecosystem. Stress appears to decrease community diversity, often also decreasing the number of species within an individual function, such as primary production. It is critical to con ...
definitions of harmful alteration, disruption or destruction (hadd)
... are associated with sedimentation, turbidity / shading, nutrients, flow patterns, and physical damage or removal. Previously, it was determined that eelgrass in eastern Canada has characteristics which meet the criteria of an Ecologically Significant Species because if the species were to be perturb ...
... are associated with sedimentation, turbidity / shading, nutrients, flow patterns, and physical damage or removal. Previously, it was determined that eelgrass in eastern Canada has characteristics which meet the criteria of an Ecologically Significant Species because if the species were to be perturb ...
EEA Environmental Monograph No. 3
... Intensive, partly unregulated fisheries in the Barents and Norwegian Seas, have over-exploited key species. Even in remote, high arctic areas, high levels of long-range transported contami nants are found in mammals and birds. Oil exploration, and other activities based on obsolete technologies, ca ...
... Intensive, partly unregulated fisheries in the Barents and Norwegian Seas, have over-exploited key species. Even in remote, high arctic areas, high levels of long-range transported contami nants are found in mammals and birds. Oil exploration, and other activities based on obsolete technologies, ca ...
northern abalone - Fisheries and Oceans Canada
... requirements are different, and specific to, each animal. Abalone currently have a broader geographic distribution than sea otters, a different life history (prey versus predator), and different threats to their survival. Hence, separate recovery strategies have been prepared. However, the recoverie ...
... requirements are different, and specific to, each animal. Abalone currently have a broader geographic distribution than sea otters, a different life history (prey versus predator), and different threats to their survival. Hence, separate recovery strategies have been prepared. However, the recoverie ...
Conservation of kaka in New Zealand
... Kaka (Nestor meridionalis) populations have been declining in New Zealand since European occupation, largely because of predation and competition from introduced animals, forest destruction and fragmentation, and hunting pressure. They are now considered a threatened species. Kaka may be one of our ...
... Kaka (Nestor meridionalis) populations have been declining in New Zealand since European occupation, largely because of predation and competition from introduced animals, forest destruction and fragmentation, and hunting pressure. They are now considered a threatened species. Kaka may be one of our ...
CBD Strategy and Action Plan
... The current situation of biodiversity in Japan ................................................37 Japan Biodiversity Outlook .......................................................................................... 37 The current situation of wildlife, etc. ......................................... ...
... The current situation of biodiversity in Japan ................................................37 Japan Biodiversity Outlook .......................................................................................... 37 The current situation of wildlife, etc. ......................................... ...
The Nepal Biodiversity Strategy and Action Plan
... poverty alleviation. Protected area is another sub-sector that has made impressive progress in biodiversity conservation in the last few decades. With over 23 percent of its land area under protection, Nepal now ranks second in Asia and one of the top 20 countries in the world for the percentage of ...
... poverty alleviation. Protected area is another sub-sector that has made impressive progress in biodiversity conservation in the last few decades. With over 23 percent of its land area under protection, Nepal now ranks second in Asia and one of the top 20 countries in the world for the percentage of ...
Associational plant refuges : convergent patterns
... agents. This definition follows that of Buss (1978). An associational plant refuge occurs when a plant that is susceptible to herbivory gains protection from herbivores when it is associated with another plant (Tahvanainen and Root 1972; Root 1973, 1974; Atsatt and O D o w d 1976). In this study, an ...
... agents. This definition follows that of Buss (1978). An associational plant refuge occurs when a plant that is susceptible to herbivory gains protection from herbivores when it is associated with another plant (Tahvanainen and Root 1972; Root 1973, 1974; Atsatt and O D o w d 1976). In this study, an ...
The National Biodiversity Strategy of Japan 2012-2020
... The current situation of biodiversity in Japan.................................................... 37 Japan Biodiversity Outlook .......................................................................................... 37 The current situation of wildlife, etc....................................... ...
... The current situation of biodiversity in Japan.................................................... 37 Japan Biodiversity Outlook .......................................................................................... 37 The current situation of wildlife, etc....................................... ...
43 B. Living Resources - Habitats Detailed community profiles of
... 13‰. in the Mission/Aransas Estuary to 36.2‰ in the Laguna Madre. Salinity levels are not only result of freshwater inflow, but may also be influenced by access to Gulf waters of oceanic salinities, a factor which has been used to classify Texas estuaries. Texas estuaries have been classified as ope ...
... 13‰. in the Mission/Aransas Estuary to 36.2‰ in the Laguna Madre. Salinity levels are not only result of freshwater inflow, but may also be influenced by access to Gulf waters of oceanic salinities, a factor which has been used to classify Texas estuaries. Texas estuaries have been classified as ope ...
A syndrome of mutualism reinforces the lifestyle of a sloth
... [19]. Because the life cycle of pyralid moths is entirely dependent on these otherwise inexplicable behaviours in three-toed sloths, we posited that the moth –sloth interaction might actually be an important mutualism, where sloths are also benefiting by virtue of their association (þ/þ). Mutualisms ...
... [19]. Because the life cycle of pyralid moths is entirely dependent on these otherwise inexplicable behaviours in three-toed sloths, we posited that the moth –sloth interaction might actually be an important mutualism, where sloths are also benefiting by virtue of their association (þ/þ). Mutualisms ...
avoidance and tolerance to avian herbivores in aquatic plants
... is therefore a crucial aspect of ecology, as it concerns the direct link between primary and secondary producers in ecosystems. Although herbivores are ubiquitous, plants are even more so, at least on land, which has raised the question why the world is mostly green, leaving plants largely unconsume ...
... is therefore a crucial aspect of ecology, as it concerns the direct link between primary and secondary producers in ecosystems. Although herbivores are ubiquitous, plants are even more so, at least on land, which has raised the question why the world is mostly green, leaving plants largely unconsume ...
A syndrome of mutualism reinforces the lifestyle of a sloth
... [19]. Because the life cycle of pyralid moths is entirely dependent on these otherwise inexplicable behaviours in three-toed sloths, we posited that the moth –sloth interaction might actually be an important mutualism, where sloths are also benefiting by virtue of their association (þ/þ). Mutualisms ...
... [19]. Because the life cycle of pyralid moths is entirely dependent on these otherwise inexplicable behaviours in three-toed sloths, we posited that the moth –sloth interaction might actually be an important mutualism, where sloths are also benefiting by virtue of their association (þ/þ). Mutualisms ...
Lesson Overview
... A pyramid of numbers shows the relative number of individual organisms at each trophic level in an ecosystem. In most ecosystems, the shape of the pyramid of numbers is similar to the shape of the pyramid of biomass for the same ecosystem, with the numbers of individuals on each level decreasing fro ...
... A pyramid of numbers shows the relative number of individual organisms at each trophic level in an ecosystem. In most ecosystems, the shape of the pyramid of numbers is similar to the shape of the pyramid of biomass for the same ecosystem, with the numbers of individuals on each level decreasing fro ...
The Invasion of the Zebra Mussel - Effects on Phytoplankton
... Biological invasion has been recognized as a major threat to global biodiversity and ecosystem function (Mack et al. 2000; Kolar & Lodge 2001) and human activity have greatly participated in the invasion success through intentional or incidental spread of species beyond their natural range (Kolar & ...
... Biological invasion has been recognized as a major threat to global biodiversity and ecosystem function (Mack et al. 2000; Kolar & Lodge 2001) and human activity have greatly participated in the invasion success through intentional or incidental spread of species beyond their natural range (Kolar & ...
Jellyfish Apocalypse: Problems, Causes and
... shells, such as crustaceans. Both, empty oceans and habitat destruction result from human activities. For example, overfishing not only empties the ocean of important species of fish, but also some gear types such as bottom trawls scrape the ocean floor, damaging the habitat of other marine organism ...
... shells, such as crustaceans. Both, empty oceans and habitat destruction result from human activities. For example, overfishing not only empties the ocean of important species of fish, but also some gear types such as bottom trawls scrape the ocean floor, damaging the habitat of other marine organism ...
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Sustained overexploitation can lead to the destruction of the resource. The term applies to natural resources such as: wild medicinal plants, grazing pastures, game animals, fish stocks, forests, and water aquifers.In ecology, overexploitation describes one of the five main activities threatening global biodiversity. Ecologists use the term to describe populations that are harvested at a rate that is unsustainable, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined somewhat differently in fisheries, hydrology and natural resource management.Overexploitation can lead to resource destruction, including extinctions. However it is also possible for overexploitation to be sustainable, as discussed below in the section on fisheries. In the context of fishing, the term overfishing can be used instead of overexploitation, as can overgrazing in stock management, overlogging in forest management, overdrafting in aquifer management, and endangered species in species monitoring. Overexploitation is not an activity limited to humans. Introduced predators and herbivores, for example, can overexploit native flora and fauna.