the NEFMC Glossary
... Bycatch: (v.) the capture of nontarget species in directed fisheries which occurs because fishing gear and methods are not selective enough to catch only target species; (n.) fish which are harvested in a fishery but are not sold or kept for personal use, including economic discards and regulatory d ...
... Bycatch: (v.) the capture of nontarget species in directed fisheries which occurs because fishing gear and methods are not selective enough to catch only target species; (n.) fish which are harvested in a fishery but are not sold or kept for personal use, including economic discards and regulatory d ...
Modeling species fitness in competitive environments
... Competition for resources between subjects of the same species and between species is one of the most important factors in ecology and evolution. With competition, many evolutionary and ecological questions can be addressed. The ability of species to compete increases their chance of survival in the ...
... Competition for resources between subjects of the same species and between species is one of the most important factors in ecology and evolution. With competition, many evolutionary and ecological questions can be addressed. The ability of species to compete increases their chance of survival in the ...
reports - University of Toronto Mississauga
... richness and relative abundance was statistically similar among treatment plots (all ANOVAs P . 0.25). Each year, individual plant species within plots were sampled nondestructively once per month throughout the growing season (May to September) using the 1.6 3 1.6 m sampling quadrat. I quantified th ...
... richness and relative abundance was statistically similar among treatment plots (all ANOVAs P . 0.25). Each year, individual plant species within plots were sampled nondestructively once per month throughout the growing season (May to September) using the 1.6 3 1.6 m sampling quadrat. I quantified th ...
Diversity and Productivity in a Long-Term Grassland Experiment David Tilman,
... occurred with lower and higher cutoffs (including 50% higher) for aboveground and total biomass. In total, the dependence of biomass on species number and composition was not explained solely by sampling effects for a species pool containing some poorly performing species. We tested the sampling hyp ...
... occurred with lower and higher cutoffs (including 50% higher) for aboveground and total biomass. In total, the dependence of biomass on species number and composition was not explained solely by sampling effects for a species pool containing some poorly performing species. We tested the sampling hyp ...
Slide 1
... The Northeast U.S. continental shelf large marine ecosystem has undergone sustained perturbations due to environmental and anthropogenic impacts over the last four decades, resulting in fundamental changes in system structure. Thermal conditions of the ecosystem are changing, the result of the warmi ...
... The Northeast U.S. continental shelf large marine ecosystem has undergone sustained perturbations due to environmental and anthropogenic impacts over the last four decades, resulting in fundamental changes in system structure. Thermal conditions of the ecosystem are changing, the result of the warmi ...
Termites
... familiar form of termite nest. Mounds are often very distinctive in form, depending on the species of termite. They can vary in size and shape from hardened flat lumps to the tall, columnar structures which may be more than seven metres high. Feeding behaviour Termites feed on dead or living plant m ...
... familiar form of termite nest. Mounds are often very distinctive in form, depending on the species of termite. They can vary in size and shape from hardened flat lumps to the tall, columnar structures which may be more than seven metres high. Feeding behaviour Termites feed on dead or living plant m ...
Plant traits and biochemical cycling on land
... Popular response traits in animals • Body size* (competitive vigor, prey choice), leg/fin length (mobility), bill/mouth dimensions (food) • Growth rate • Tolerance of drought, cold or hot temperature, high salt, etc. • Ability to dig holes in trees or soil (safe hiding or ...
... Popular response traits in animals • Body size* (competitive vigor, prey choice), leg/fin length (mobility), bill/mouth dimensions (food) • Growth rate • Tolerance of drought, cold or hot temperature, high salt, etc. • Ability to dig holes in trees or soil (safe hiding or ...
Australian National Centre for Ocean Resources and Security
... • Fisheries and aquaculture • Tourism and recreation • Shipping and marine pollution ...
... • Fisheries and aquaculture • Tourism and recreation • Shipping and marine pollution ...
Ocean Food Webs and Tropic Dynamics
... Energy leaves the food chains by each transfer to the next trophic level. This is because much of the chemical energy incorporated in organic compounds is converted to heat or respired when organic carbon is broken down to CO2. A consequence of that process is that total energy diminish at each trop ...
... Energy leaves the food chains by each transfer to the next trophic level. This is because much of the chemical energy incorporated in organic compounds is converted to heat or respired when organic carbon is broken down to CO2. A consequence of that process is that total energy diminish at each trop ...
AP® Environmental Science - AP Central
... when both a system and its surroundings are considered; that is, energy can neither be created nor destroyed but may be transformed from one form to another, including the exchange of energy with its surroundings. The second law is sometimes referred to as the law of entropy. To put it simply, in an ...
... when both a system and its surroundings are considered; that is, energy can neither be created nor destroyed but may be transformed from one form to another, including the exchange of energy with its surroundings. The second law is sometimes referred to as the law of entropy. To put it simply, in an ...
File
... The biosphere (BI uh sfihr) is the portion of Earth that supports life. Ecologists study what takes place in the biosphere. The biosphere includes the air, water, and land where organisms can live, both above and below the ground. The biosphere supports a wide variety of organisms in a wide range of ...
... The biosphere (BI uh sfihr) is the portion of Earth that supports life. Ecologists study what takes place in the biosphere. The biosphere includes the air, water, and land where organisms can live, both above and below the ground. The biosphere supports a wide variety of organisms in a wide range of ...
New Definitions of the Concepts and Terms Ecosystem and
... The term “uniform phenomena” is omitted Studies performed in the past decades gave many examples of heterogeneity of some parameters (temperature, illuminance, etc.) and variability of these parameters within the biogeocenosis. Synusias and consortiums are other examples of heterogeneity [8] Fungi a ...
... The term “uniform phenomena” is omitted Studies performed in the past decades gave many examples of heterogeneity of some parameters (temperature, illuminance, etc.) and variability of these parameters within the biogeocenosis. Synusias and consortiums are other examples of heterogeneity [8] Fungi a ...
Lesson 2
... capacity of an ecosystem. • The carrying capacity of an environment is not constant because it increases and decreases as the amount of available resources increases and decreases. • When the size of a population becomes larger than the carrying capacity of its ...
... capacity of an ecosystem. • The carrying capacity of an environment is not constant because it increases and decreases as the amount of available resources increases and decreases. • When the size of a population becomes larger than the carrying capacity of its ...
Soil nematode assemblages indicate the potential for
... nchez-Moreno and Ferris, 2007). In that case, target species (Sa species could be regulated by controlled increases in bacterial-, fungal- and non-damaging plant-feeding nematodes, which will provide resources to enhance predator abundance and promote important and useful population interactions. S ...
... nchez-Moreno and Ferris, 2007). In that case, target species (Sa species could be regulated by controlled increases in bacterial-, fungal- and non-damaging plant-feeding nematodes, which will provide resources to enhance predator abundance and promote important and useful population interactions. S ...
Ecosystems - Oxford University Press
... negative outcomes of natural events, such as bushfires, can be reduced. Students: »» explain the development of strategies for managing natural events in Australian ecosystems »» describe the contribution of scientific developments in agricultural practices »» research Australian contributions to th ...
... negative outcomes of natural events, such as bushfires, can be reduced. Students: »» explain the development of strategies for managing natural events in Australian ecosystems »» describe the contribution of scientific developments in agricultural practices »» research Australian contributions to th ...
Ecology
... 40. What is the source of energy for the earth’s ecosystems? 41. Construct a grazing food chain containing at least four trophic levels. 42. The conversion of atmospheric nitrogen to nitrates by bacteria is called … 43. Give two sources of the carbon dioxide that is found in the atmosphere. 44. Farm ...
... 40. What is the source of energy for the earth’s ecosystems? 41. Construct a grazing food chain containing at least four trophic levels. 42. The conversion of atmospheric nitrogen to nitrates by bacteria is called … 43. Give two sources of the carbon dioxide that is found in the atmosphere. 44. Farm ...
The Biosphere: Biogeochemical cycling of C,N,P in freshwater and
... atmospheric O2 and deeper waters in which O2 may be depleted • Anaerobic microbial processes (denitrification, sulfate reduction, methanogenesis) are responsible for the release of N2, H2S and CH4 from wetland sediments • Also coupled to changes in oxidation state of Fe and Mn in wetland soils • Ana ...
... atmospheric O2 and deeper waters in which O2 may be depleted • Anaerobic microbial processes (denitrification, sulfate reduction, methanogenesis) are responsible for the release of N2, H2S and CH4 from wetland sediments • Also coupled to changes in oxidation state of Fe and Mn in wetland soils • Ana ...
Plant functional composition influences rates of soil carbon and nitrogen accumulation
... species numbers on soil C and N accumulation depend on enhanced C and N inputs returned to the soil from the plant community (i.e. increased plant productivity). Plant productivity is, however, strongly positively affected by the presence of critical plant functional traits which are related to the ...
... species numbers on soil C and N accumulation depend on enhanced C and N inputs returned to the soil from the plant community (i.e. increased plant productivity). Plant productivity is, however, strongly positively affected by the presence of critical plant functional traits which are related to the ...
Ecology and Social Action (Barry Commoner)
... ecosphere. Synthetic Food and Fiber-No Bargain This much seems clear and, in my opinion, indisputable. It is equally clear and indisputable that man is a species of animal with specific environmental requirements - for plant and animal organic matter as food, for oxygen, pure water, and a suitable r ...
... ecosphere. Synthetic Food and Fiber-No Bargain This much seems clear and, in my opinion, indisputable. It is equally clear and indisputable that man is a species of animal with specific environmental requirements - for plant and animal organic matter as food, for oxygen, pure water, and a suitable r ...
POPULATION DENSITY AND DISTRIBUTION OF THE NEW
... native bush remnant has 4 other megascolecid species (as yet unidentified), only one of which has been found at low densities in pastures, but even the total numbers of Megascolecidae in the native bush site are less than that of Octochaetus multiporus in the pasture sites. This suggests that Octoch ...
... native bush remnant has 4 other megascolecid species (as yet unidentified), only one of which has been found at low densities in pastures, but even the total numbers of Megascolecidae in the native bush site are less than that of Octochaetus multiporus in the pasture sites. This suggests that Octoch ...
Forestry and Agricultural Management Can Enhance Biodiversity
... control, but may require additional structure, such as shrubs, trees, and natural or manmade cavities. Most young birds feed exclusively on insects. Bluebirds feed extensively on caterpillars and grasshoppers. Purple martins may provide good control of horseflies. Bats, which can consume up to 600 i ...
... control, but may require additional structure, such as shrubs, trees, and natural or manmade cavities. Most young birds feed exclusively on insects. Bluebirds feed extensively on caterpillars and grasshoppers. Purple martins may provide good control of horseflies. Bats, which can consume up to 600 i ...
Western Society of Weed Science, Albuquerque, New Mexico
... •soil nitrogen •soil organic matter •percent clay in soil ...
... •soil nitrogen •soil organic matter •percent clay in soil ...
Prokaryotes play vital roles in the movement of carbon
... nitrogen available in the terrestrial ecosystem is gaseous nitrogen from the air, but this nitrogen is not usable by plants, which are primary producers. Gaseous nitrogen is transformed, or "fixed," into more-readily available forms such as ammonia through the process of nitrogen fixation by natural ...
... nitrogen available in the terrestrial ecosystem is gaseous nitrogen from the air, but this nitrogen is not usable by plants, which are primary producers. Gaseous nitrogen is transformed, or "fixed," into more-readily available forms such as ammonia through the process of nitrogen fixation by natural ...