Impact of Deforestation on Adjacent Small Stream Ecosystems Katie
... Recent studies show that deforestation – on both small and large scales – has a significant impact upon the physical, chemical, and biological characteristics of adjacent small streams. In general, aquatic habitats lose heterogeneity, and this effect is mirrored among invertebrate and fish populatio ...
... Recent studies show that deforestation – on both small and large scales – has a significant impact upon the physical, chemical, and biological characteristics of adjacent small streams. In general, aquatic habitats lose heterogeneity, and this effect is mirrored among invertebrate and fish populatio ...
two degrees of separation in complex food webs
... feeding capabilities may be responsible for the increase of L/S with S that results in observed levels of C.25 Within habitats as well as among habitats, d can be used to identify which species are more or less likely to affect each other directly or indirectly. Such information could be useful for ...
... feeding capabilities may be responsible for the increase of L/S with S that results in observed levels of C.25 Within habitats as well as among habitats, d can be used to identify which species are more or less likely to affect each other directly or indirectly. Such information could be useful for ...
Sociometric analysis of the role of penaeids in the continental shelf
... Although shrimp utilize the productive estuarine and coastal nursery habitat as post-larvae and juveniles, their importance to fisheries occurs once they return to the open ocean as adults. However, little is known regarding the ecological role of shrimp on the open ocean food web. This is an import ...
... Although shrimp utilize the productive estuarine and coastal nursery habitat as post-larvae and juveniles, their importance to fisheries occurs once they return to the open ocean as adults. However, little is known regarding the ecological role of shrimp on the open ocean food web. This is an import ...
"Catfishes of North Carolina." Catfish angling information handout
... spots, as these sites are stocked routinely with channel catfish. Visit www.ncwildlife.org for locations. White catfish: Yadkin and Catawba River impoundments; Tar, Roanoke and Chowan rivers. Blue catfish: Cape Fear and Neuse rivers, Lake Norman, Gaston and Yadkin River impoundments. Flathead catfis ...
... spots, as these sites are stocked routinely with channel catfish. Visit www.ncwildlife.org for locations. White catfish: Yadkin and Catawba River impoundments; Tar, Roanoke and Chowan rivers. Blue catfish: Cape Fear and Neuse rivers, Lake Norman, Gaston and Yadkin River impoundments. Flathead catfis ...
Place-based protection
... • Given significant interest in preserving deep coral assemblages, seamounts are “hot properties”… fishing industry folks less willing to fight this battle… • High seas seamount protection is an important frontier for marine conservation… Half the seamounts in the world’s oceans are in international ...
... • Given significant interest in preserving deep coral assemblages, seamounts are “hot properties”… fishing industry folks less willing to fight this battle… • High seas seamount protection is an important frontier for marine conservation… Half the seamounts in the world’s oceans are in international ...
Carrying Capacity of Ecosystems
... Lakes ecosystems differ from the population growth of these mussels in their native ecosystems? How has the geographic range of zebra mussels changed between the mid1980s and now? ...
... Lakes ecosystems differ from the population growth of these mussels in their native ecosystems? How has the geographic range of zebra mussels changed between the mid1980s and now? ...
Chapter 5: Ecology and evolution: Populations, communities, and
... catchall term meaning the sum total of all organisms in an area, taking into account the diversity of species, their genes, their populations, and their communities. A species is a particular type of organism, or more precisely, a population or group of populations whose members share certain charac ...
... catchall term meaning the sum total of all organisms in an area, taking into account the diversity of species, their genes, their populations, and their communities. A species is a particular type of organism, or more precisely, a population or group of populations whose members share certain charac ...
Food and Feeding Habits in Fish
... Every organism has a place to live in nature, a functional role in that place, and a complex set of adaptations for reproducing its kind. On the surface, this observation might seem to be obvious, even trivial. However, in order to understand our biological world—the biosphere, how it operates and u ...
... Every organism has a place to live in nature, a functional role in that place, and a complex set of adaptations for reproducing its kind. On the surface, this observation might seem to be obvious, even trivial. However, in order to understand our biological world—the biosphere, how it operates and u ...
Frog Declines
... have appeared worldwide). While human activities are causing a loss of much of the world’s biodiversity, amphibians appear to be suffering much greater effects than other species of organisms. Because amphibians generally have a two-staged life cycle consisting of both aquatic (larvae) and terrestri ...
... have appeared worldwide). While human activities are causing a loss of much of the world’s biodiversity, amphibians appear to be suffering much greater effects than other species of organisms. Because amphibians generally have a two-staged life cycle consisting of both aquatic (larvae) and terrestri ...
Competition - Mark A. Hixon
... resources within the same general habitat. Ebeling and Hixon (1991) review the basic guilds of demersal marine fishes, including many examples from California. Resource partitioning occurs when species within a guild utilize shared resource categories in at least slightly different ways (review by S ...
... resources within the same general habitat. Ebeling and Hixon (1991) review the basic guilds of demersal marine fishes, including many examples from California. Resource partitioning occurs when species within a guild utilize shared resource categories in at least slightly different ways (review by S ...
Large Marine Carnivores: Trophic Cascades and Top
... at sites without otters. The results are consistent in space and time because at the time of the study, otter populations had been increasing since the 1970s when strong interactions on their herbivorous prey were first described (Estes and Palmisano 1974). This progression stopped and reversed afte ...
... at sites without otters. The results are consistent in space and time because at the time of the study, otter populations had been increasing since the 1970s when strong interactions on their herbivorous prey were first described (Estes and Palmisano 1974). This progression stopped and reversed afte ...
6-3 Biodiversity
... Habitat Alteration When land is developed, natural habitats may be destroyed. Development often splits ecosystems into pieces, a process called habitat fragmentation. The smaller a species’ habitat is, the more vulnerable the species is to further disturbance. ...
... Habitat Alteration When land is developed, natural habitats may be destroyed. Development often splits ecosystems into pieces, a process called habitat fragmentation. The smaller a species’ habitat is, the more vulnerable the species is to further disturbance. ...
The Serengeti food web: empirical quantification and analysis of
... grouped nodes and includes both invertebrates and vertebrates ranging from body masses between 10)7 and 104 kg. 3. We study the topological changes in this food web that result from the simulated IUCN-based species-loss sequence representing current species vulnerability to human disturbances in and ...
... grouped nodes and includes both invertebrates and vertebrates ranging from body masses between 10)7 and 104 kg. 3. We study the topological changes in this food web that result from the simulated IUCN-based species-loss sequence representing current species vulnerability to human disturbances in and ...
Riparian Habitat Management for Reptiles and Amphibians on
... and loss of aquatic habitat (Hall 1980). Herpetofauna are important in food chains and they make up large proportions of vertebrates in certain ecosystems (Bury and Raphael 1983). Information on amphibian and reptile abundance and diversity helps determine the relative health of ecosystems. For exam ...
... and loss of aquatic habitat (Hall 1980). Herpetofauna are important in food chains and they make up large proportions of vertebrates in certain ecosystems (Bury and Raphael 1983). Information on amphibian and reptile abundance and diversity helps determine the relative health of ecosystems. For exam ...
Community stability and selective extinction during the Permian
... measurements of the droplet size distribution in localized volumes that clouds indeed have sharp edges down to centimeter scales. Apparently, even when the edges, which represent the signature of transient mixing events, eventually diffuse away, they do so after sufficient evaporation occurs that th ...
... measurements of the droplet size distribution in localized volumes that clouds indeed have sharp edges down to centimeter scales. Apparently, even when the edges, which represent the signature of transient mixing events, eventually diffuse away, they do so after sufficient evaporation occurs that th ...
Final Report - Rufford Small Grants
... was distributed among fish farms and local authorities. Results obtained from the fieldwork were shared with local stakeholders, fish farm owners and non-governmental organizations. The project results will be placed on NACRES website and in annual report for 2009 year. A scientific article will be ...
... was distributed among fish farms and local authorities. Results obtained from the fieldwork were shared with local stakeholders, fish farm owners and non-governmental organizations. The project results will be placed on NACRES website and in annual report for 2009 year. A scientific article will be ...
The Cronus hypothesis – extinction as a necessary and dynamic
... diversification of millions of species over billions of dubbed the Anthropocene (Crutzen 2002) because its years of Earth‟s history, extinction has kept primary driver is human over-consumption, overremarkable pace: more than 99 % of all species that population, and associated degradation of the hav ...
... diversification of millions of species over billions of dubbed the Anthropocene (Crutzen 2002) because its years of Earth‟s history, extinction has kept primary driver is human over-consumption, overremarkable pace: more than 99 % of all species that population, and associated degradation of the hav ...
Eastern freshwater cod - NSW Department of Primary Industries
... The impacts of developments or activities that require consent or approval in accordance with the Environmental Planning and Assessment Act 1979 must be assessed and considered by consent or determining authorities. Where such actions are likely to result in significant impact on a threatened specie ...
... The impacts of developments or activities that require consent or approval in accordance with the Environmental Planning and Assessment Act 1979 must be assessed and considered by consent or determining authorities. Where such actions are likely to result in significant impact on a threatened specie ...
Varanus acanthurus. Photo by Jeff Lemm.
... fauna of Madagascar is especially threatened mostly due to habitat loss from extensive deforestation by humans. Three of the IUCN listed species are monitor lizards. Most varanids are top predators, generally have large territories, and have low population densities, which make them particularly vul ...
... fauna of Madagascar is especially threatened mostly due to habitat loss from extensive deforestation by humans. Three of the IUCN listed species are monitor lizards. Most varanids are top predators, generally have large territories, and have low population densities, which make them particularly vul ...
Carp and Eastern Gambusia - NSW Department of Primary Industries
... food and habitat, and effects on recruitment (population replenishment). Eastern Gambusia feed on a wide variety of food including many invertebrates, the eggs and juveniles of other fish species, tadpoles and adult frogs. Their broad diet, rapid reproduction and aggressive behaviour have enabled th ...
... food and habitat, and effects on recruitment (population replenishment). Eastern Gambusia feed on a wide variety of food including many invertebrates, the eggs and juveniles of other fish species, tadpoles and adult frogs. Their broad diet, rapid reproduction and aggressive behaviour have enabled th ...
Zooplankton Notes
... and counts the zooplankton by allowing the plankton to pass through an illuminated chamber (similar to a flow cytometer for phytoplankton) ADCP: Acoustic Doppler Current Profiler. This is an echosounder that sends pulses of sound into the ocean, which bounce off hard objects. Zooplankton can be esti ...
... and counts the zooplankton by allowing the plankton to pass through an illuminated chamber (similar to a flow cytometer for phytoplankton) ADCP: Acoustic Doppler Current Profiler. This is an echosounder that sends pulses of sound into the ocean, which bounce off hard objects. Zooplankton can be esti ...
Competition and the Structure of Granivore
... our first indirect evidence that coexis tence of granivores might be limited by competition for food. Further indication of the importance of resource competition emerged from ...
... our first indirect evidence that coexis tence of granivores might be limited by competition for food. Further indication of the importance of resource competition emerged from ...
File - Cook Biology
... destruction lead to loss of biodiversity • For example – In Wisconsin, prairie occupies <0.1% of its original area – About 93% of coral reefs have been damaged by human activities Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... destruction lead to loss of biodiversity • For example – In Wisconsin, prairie occupies <0.1% of its original area – About 93% of coral reefs have been damaged by human activities Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
Food Web Diameter: Two Degrees of Separation
... feeding capabilities may be responsible for the increase of L/S with S that results in observed levels of C.25 Within habitats as well as among habitats, d can be used to identify which species are more or less likely to affect each other directly or indirectly. Such information could be useful for ...
... feeding capabilities may be responsible for the increase of L/S with S that results in observed levels of C.25 Within habitats as well as among habitats, d can be used to identify which species are more or less likely to affect each other directly or indirectly. Such information could be useful for ...
Reintroduction: challenges and lessons for basic ecology
... density of conspecifics. These negative effects may vanish in the first wild-born generation, at least for species in which social learning and cultural transmission are low. However, demographic and even behavioural studies require long-term effort, to achieve sufficient sample sizes and relevant o ...
... density of conspecifics. These negative effects may vanish in the first wild-born generation, at least for species in which social learning and cultural transmission are low. However, demographic and even behavioural studies require long-term effort, to achieve sufficient sample sizes and relevant o ...
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.