View PDF - Cramer Fish Sciences
... scales. If stable habitats have lower rates of local extinction than unstable or frequently disturbed habitats, they can potentially accumulate more of the regional taxa pool than unstable ones. Work by stream ecologists over the last 40 years has been characterized by refinement and elaboration of ...
... scales. If stable habitats have lower rates of local extinction than unstable or frequently disturbed habitats, they can potentially accumulate more of the regional taxa pool than unstable ones. Work by stream ecologists over the last 40 years has been characterized by refinement and elaboration of ...
The invasive Pacific oyster, Crassostrea gigas, in
... This risk assessment evaluate the impact on the ecosystem of the invasive Pacific oyster, Crassostrea gigas, as function of climate change on four different Scandinavian habitats: 1. Low energy rock 2. Littoral sand and mud 3. Littoral biogenic reefs 4. Sub-littoral sediments The risk assessment is ...
... This risk assessment evaluate the impact on the ecosystem of the invasive Pacific oyster, Crassostrea gigas, as function of climate change on four different Scandinavian habitats: 1. Low energy rock 2. Littoral sand and mud 3. Littoral biogenic reefs 4. Sub-littoral sediments The risk assessment is ...
Johnson habitat quality
... or we can measure variables for animals and populations in different habitats to reveal variation in habitat quality. In measuring habitats directly, we should, of course, be concerned with critical resources, such as food and nest sites, but habitat is far more than the vegetation and resources sur ...
... or we can measure variables for animals and populations in different habitats to reveal variation in habitat quality. In measuring habitats directly, we should, of course, be concerned with critical resources, such as food and nest sites, but habitat is far more than the vegetation and resources sur ...
Ecological Role of Dry-Habitat Chimpanzees (Pan troglodytes
... the driest, most open, and seasonal habitats inhabited by chimpanzees. Unlike most primatological studies which employ methods that include focal follows, this study focused instead on observing ‘resource patches’ for chimpanzees. Patch focals allow for the observation of all animals within a study ...
... the driest, most open, and seasonal habitats inhabited by chimpanzees. Unlike most primatological studies which employ methods that include focal follows, this study focused instead on observing ‘resource patches’ for chimpanzees. Patch focals allow for the observation of all animals within a study ...
fisken og
... This risk assessment evaluate the impact on the ecosystem of the invasive Pacific oyster, Crassostrea gigas, as function of climate change on four different Scandinavian habitats: 1. Low energy rock 2. Littoral sand and mud 3. Littoral biogenic reefs 4. Sub-littoral sediments The risk assessment is ...
... This risk assessment evaluate the impact on the ecosystem of the invasive Pacific oyster, Crassostrea gigas, as function of climate change on four different Scandinavian habitats: 1. Low energy rock 2. Littoral sand and mud 3. Littoral biogenic reefs 4. Sub-littoral sediments The risk assessment is ...
Weed Ecology in Natural and Agricultural Systems
... that, by providing examples of how these concepts are useful in real situations, the importance of ecological theory will become apparent. If we can convince one of you to pick up one of those large, intimidating tomes, then we will have succeeded. While the focus of this book will be the use of eco ...
... that, by providing examples of how these concepts are useful in real situations, the importance of ecological theory will become apparent. If we can convince one of you to pick up one of those large, intimidating tomes, then we will have succeeded. While the focus of this book will be the use of eco ...
Wulff 2012 - FSU Biology
... and biotic influences on sponges is necessary for understanding the adaptive significance of sponge traits. On an ecological timescale as well, predictions cannot be made accurately unless distinctions are made between influences of abiotic and biotic factors. As abiotic factors change, sponge distr ...
... and biotic influences on sponges is necessary for understanding the adaptive significance of sponge traits. On an ecological timescale as well, predictions cannot be made accurately unless distinctions are made between influences of abiotic and biotic factors. As abiotic factors change, sponge distr ...
Rountree, R.A., and K.W. Able. 2007
... we will first point out how little is known of marsh functions for nekton, and then we will present a more detailed discussion of marsh structure, including inferences about function that can be drawn from structure. Before we can begin our discussion of marsh function, it is necessary to carefully ...
... we will first point out how little is known of marsh functions for nekton, and then we will present a more detailed discussion of marsh structure, including inferences about function that can be drawn from structure. Before we can begin our discussion of marsh function, it is necessary to carefully ...
Ecology and Evolution 5(1)
... well as generate divergent natural selection within that lineage. Thus, ecological opportunity arises from two fundamental elements: (1) niche availability, the ability of a population with a phenotype previously absent from a community to persist within that community and (2) niche discordance, the ...
... well as generate divergent natural selection within that lineage. Thus, ecological opportunity arises from two fundamental elements: (1) niche availability, the ability of a population with a phenotype previously absent from a community to persist within that community and (2) niche discordance, the ...
MUTUALISM AND CORAL PERSISTENCE: THE ROLE OF
... defenses that suppress feeding by local fishes, sea urchins, and other crabs. This allows Mithrax to defend corals from overgrowth by chemically noxious seaweeds like Dictyota and Sargassum that are avoided by most local herbivores. However, further field manipulations under reduced light conditions ...
... defenses that suppress feeding by local fishes, sea urchins, and other crabs. This allows Mithrax to defend corals from overgrowth by chemically noxious seaweeds like Dictyota and Sargassum that are avoided by most local herbivores. However, further field manipulations under reduced light conditions ...
What can be learnt from a snail?
... for most of the studies of L. saxatilis, it is important to notice that additional ecotypes can be found, including snails that appear more or less intermediate to ‘named’ ecotypes (Reid 1996). In fact, it seems as whenever the species has established in a microhabitat with a specific combination of ...
... for most of the studies of L. saxatilis, it is important to notice that additional ecotypes can be found, including snails that appear more or less intermediate to ‘named’ ecotypes (Reid 1996). In fact, it seems as whenever the species has established in a microhabitat with a specific combination of ...
The Crozet oceanic zone
... oceanic zone, gave only information the regional context of where this archipelago is located. These conclusions were used in May 2012 for the CCAMLR working group on Planning Domain 5 which was held at the headquarters of TAAF in Reunion Island (France). It brought together around twenty scientists ...
... oceanic zone, gave only information the regional context of where this archipelago is located. These conclusions were used in May 2012 for the CCAMLR working group on Planning Domain 5 which was held at the headquarters of TAAF in Reunion Island (France). It brought together around twenty scientists ...
Habitat Monitoring Strategy for the Tidal Skagit Delta Integrating
... themselves. The Skagit Chinook Recovery Plan describes a monitoring plan to relate the distribution, abundance, productivity, and migration timing of juvenile Chinook salmon in tidal marshes and nearshore habitats to habitat restoration (Greene & Beamer 2005). This Chinook monitoring plan is a rare ...
... themselves. The Skagit Chinook Recovery Plan describes a monitoring plan to relate the distribution, abundance, productivity, and migration timing of juvenile Chinook salmon in tidal marshes and nearshore habitats to habitat restoration (Greene & Beamer 2005). This Chinook monitoring plan is a rare ...
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). ...
Reef Habitats in the Middle Atlantic Bight - Mid
... striata; and tautog, Tautoga onitis) and possible effect on other resources, but these effects are not well known nor well understood. In fact, reef habitats tribution, abundance, use by living marine resources and associated biological commu in general seem underappreciated by nities (except on es ...
... striata; and tautog, Tautoga onitis) and possible effect on other resources, but these effects are not well known nor well understood. In fact, reef habitats tribution, abundance, use by living marine resources and associated biological commu in general seem underappreciated by nities (except on es ...
Record 1 of 23
... dominance at specific locations under specific environmental regimes. Ecosystems terminate, gradually or abruptly, when the dominant species or functional types are replaced by others, usually owing to environmental change or severe and irreversible disturbance. Assessing whether current ecosystems ...
... dominance at specific locations under specific environmental regimes. Ecosystems terminate, gradually or abruptly, when the dominant species or functional types are replaced by others, usually owing to environmental change or severe and irreversible disturbance. Assessing whether current ecosystems ...
Habitat complexity: approaches and future directions
... The relationship between habitat complexity and species richness may be universal, as suggested by the role of complexity in determining richness of assemblages throughout the Phanerozoic, with the greatest richness associated with habitat-forming crinoids, bryozoans, and corals (Bambach, 1977; Kies ...
... The relationship between habitat complexity and species richness may be universal, as suggested by the role of complexity in determining richness of assemblages throughout the Phanerozoic, with the greatest richness associated with habitat-forming crinoids, bryozoans, and corals (Bambach, 1977; Kies ...
Effects of local and regional drivers on plant diversity within tundra
... (e.g. Ricklefs 1987, 2008; Cornell & Lawton 1992). However, the diversity within a community does not have to be regarded under the aspect of species richness only. In certain contexts, the relative abundance of plant species can be more important than their absolute number (Whittaker 1972; Purvis & ...
... (e.g. Ricklefs 1987, 2008; Cornell & Lawton 1992). However, the diversity within a community does not have to be regarded under the aspect of species richness only. In certain contexts, the relative abundance of plant species can be more important than their absolute number (Whittaker 1972; Purvis & ...
Investigation of sympatric speciation as the outcome of competition
... Table 2.1 The main characteristics of food resources for the prey individuals ................. 37 Table 2.2. Sympatric speciation criteria and chosen strategy ............................................ 39 Table 2.3. Initial number of sister species and the number of sister species that successful ...
... Table 2.1 The main characteristics of food resources for the prey individuals ................. 37 Table 2.2. Sympatric speciation criteria and chosen strategy ............................................ 39 Table 2.3. Initial number of sister species and the number of sister species that successful ...
Patterns of habitat use and segregation among African large
... which habitat loss and fragmentation are happening, the need for space that allows species coexistence should sound like a warning bell. In Chapter Four we investigated how the species are affected by and adapt to anthropogenic habitat modification and human activities near the boundary of a protect ...
... which habitat loss and fragmentation are happening, the need for space that allows species coexistence should sound like a warning bell. In Chapter Four we investigated how the species are affected by and adapt to anthropogenic habitat modification and human activities near the boundary of a protect ...
ESA 2010 handbook - Ecological Society of Australia
... studying population and community dynamics of the boreal forest and tundra regions of western Canada. He is retired from the University of British Columbia and lives in Canberra during the northern winter. ...
... studying population and community dynamics of the boreal forest and tundra regions of western Canada. He is retired from the University of British Columbia and lives in Canberra during the northern winter. ...
The SER Primer on Ecological Restoration
... past disturbances, cultural conditions that have shaped the landscape, and contemporary constraints and opportunities. In the simplest circumstances, restoration consists of removing or modifying a specific disturbance, thereby allowing ecological processes to bring about an independent recovery. Fo ...
... past disturbances, cultural conditions that have shaped the landscape, and contemporary constraints and opportunities. In the simplest circumstances, restoration consists of removing or modifying a specific disturbance, thereby allowing ecological processes to bring about an independent recovery. Fo ...
UNIVERSIDAD AUT ´ONOMA DE MADRID FACULTAD DE
... related in the most important manner to other organic beings, we must see that the range of the inhabitants in any country by no means exclusively depends on insensibly changing physical conditions, but in large part on the presence of other species, on which it depends, or by which it is destroyed, ...
... related in the most important manner to other organic beings, we must see that the range of the inhabitants in any country by no means exclusively depends on insensibly changing physical conditions, but in large part on the presence of other species, on which it depends, or by which it is destroyed, ...
ppt
... is equilibrial for S alone, or also for species composition? Speciation & colonization could account for equilibrial S, but additional mechanisms would be required for the maintenance of species composition (species list and relative abundances) ...
... is equilibrial for S alone, or also for species composition? Speciation & colonization could account for equilibrial S, but additional mechanisms would be required for the maintenance of species composition (species list and relative abundances) ...
biogeographic atlas of the southern ocean - HOME
... Julian GUTT is a marine ecologist at the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, and professor at the Oldenburg University, Germany. He participated in 13 scientific expeditions to the Antarctic and was twice chief scientist on board Polarstern. He is mem ...
... Julian GUTT is a marine ecologist at the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, and professor at the Oldenburg University, Germany. He participated in 13 scientific expeditions to the Antarctic and was twice chief scientist on board Polarstern. He is mem ...
Biogeography
Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area. Phytogeography is the branch of biogeography that studies the distribution of plants. Zoogeography is the branch that studies distribution of animals.Knowledge of spatial variation in the numbers and types of organisms is as vital to us today as it was to our early human ancestors, as we adapt to heterogeneous but geographically predictable environments. Biogeography is an integrative field of inquiry that unites concepts and information from ecology, evolutionary biology, geology, and physical geography.Modern biogeographic research combines information and ideas from many fields, from the physiological and ecological constraints on organismal dispersal to geological and climatological phenomena operating at global spatial scales and evolutionary time frames.The short-term interactions within a habitat and species of organisms describe the ecological application of biogeography. Historical biogeography describes the long-term, evolutionary periods of time for broader classifications of organisms. Early scientists, beginning with Carl Linnaeus, contributed theories to the contributions of the development of biogeography as a science. Beginning in the mid-18th century, Europeans explored the world and discovered the biodiversity of life. Linnaeus initiated the ways to classify organisms through his exploration of undiscovered territories.The scientific theory of biogeography grows out of the work of Alexander von Humboldt (1769–1859), Hewett Cottrell Watson (1804–1881), Alphonse de Candolle (1806–1893), Alfred Russel Wallace (1823–1913), Philip Lutley Sclater (1829–1913) and other biologists and explorers.