Seasonal changes of trophic transfer efficiencies
... Lake Constance (German: Bodensee) is a large (476 km 2 ) and deep (mean depth 100 m, zmax = 252 m) meso-eutrophic lake of warm-monomictic character at the northern fringe of the Alps (47°50'N) in Central Europe. The sampling site is located in the fjord-like north-western arm of the lake. All groups ...
... Lake Constance (German: Bodensee) is a large (476 km 2 ) and deep (mean depth 100 m, zmax = 252 m) meso-eutrophic lake of warm-monomictic character at the northern fringe of the Alps (47°50'N) in Central Europe. The sampling site is located in the fjord-like north-western arm of the lake. All groups ...
Aquatic Food Web Interactions - Association for Biology Laboratory
... two graphs that indicate the relative biomass of each trophic level (Figure 15.1). (See also Fretwell 1977, Oksanen et al. 1981, Power 1990, and Schmitz 1993). If the community contains only plants, the total net primary production is determined by those factors that affect photosynthesis: Availabil ...
... two graphs that indicate the relative biomass of each trophic level (Figure 15.1). (See also Fretwell 1977, Oksanen et al. 1981, Power 1990, and Schmitz 1993). If the community contains only plants, the total net primary production is determined by those factors that affect photosynthesis: Availabil ...
Ecological Overview of the Southern Plains Inventory and
... About 1 inch (2.5 cm) of new topsoil is formed every 100 to 1,000 years, depending on climate, vegetation and other living organisms, topography, and the nature of the soil’s parent material (Sampson 1981). Prairie soils are generally nitrogen- and carbon-poor, and soil nutrient transport is general ...
... About 1 inch (2.5 cm) of new topsoil is formed every 100 to 1,000 years, depending on climate, vegetation and other living organisms, topography, and the nature of the soil’s parent material (Sampson 1981). Prairie soils are generally nitrogen- and carbon-poor, and soil nutrient transport is general ...
Soil Biology and Microbiology
... group of bacteria, and include organisms adapted to extreme environments (halophiles, termophiles etc.) They differ from the eubacteria in their membrane lipid composition and possession of introns in their genome. Eubacteria – literally “true bacteria” is a somewhat larger group of bacteria of vari ...
... group of bacteria, and include organisms adapted to extreme environments (halophiles, termophiles etc.) They differ from the eubacteria in their membrane lipid composition and possession of introns in their genome. Eubacteria – literally “true bacteria” is a somewhat larger group of bacteria of vari ...
What Shapes an Ecosystem?
... ● These interactions help shape the ecosystem in which they live. ● Community interactions, such as competition, predation, and various forms of symbiosis, can powerfully affect an ecosystem. ...
... ● These interactions help shape the ecosystem in which they live. ● Community interactions, such as competition, predation, and various forms of symbiosis, can powerfully affect an ecosystem. ...
Discussion
... defoliation by grazing causes reductions in the quantity of plant carbon exudation through the roots into the rhizosphere. The rhizosphere volume diminishes greatly to 49.75 ft3/ac, reducing the organism biomass and activity, and decreasing the quantities of soil organic nitrogen converted into mine ...
... defoliation by grazing causes reductions in the quantity of plant carbon exudation through the roots into the rhizosphere. The rhizosphere volume diminishes greatly to 49.75 ft3/ac, reducing the organism biomass and activity, and decreasing the quantities of soil organic nitrogen converted into mine ...
cold water prawns
... which are farmed (2). Whether the species is called prawn or shrimp depends on size, with larger animals often called prawns and smaller animals described as shrimp. The Food Standards Agency can provide further information on commercial species designations (3). ...
... which are farmed (2). Whether the species is called prawn or shrimp depends on size, with larger animals often called prawns and smaller animals described as shrimp. The Food Standards Agency can provide further information on commercial species designations (3). ...
PDF
... much research, and these are likely to be used commercially in the near future (Hilbeck, 2001). Among the new generation of GM crops to be approved for liberation are crop varieties modified to produce vitamins, vaccines, enzymes, and other industrial products, all of which may have unknown impacts ...
... much research, and these are likely to be used commercially in the near future (Hilbeck, 2001). Among the new generation of GM crops to be approved for liberation are crop varieties modified to produce vitamins, vaccines, enzymes, and other industrial products, all of which may have unknown impacts ...
Transgenic Crops: Implications for Biodiversity and Sustainable
... much research, and these are likely to be used commercially in the near future (Hilbeck, 2001). Among the new generation of GM crops to be approved for liberation are crop varieties modified to produce vitamins, vaccines, enzymes, and other industrial products, all of which may have unknown impacts ...
... much research, and these are likely to be used commercially in the near future (Hilbeck, 2001). Among the new generation of GM crops to be approved for liberation are crop varieties modified to produce vitamins, vaccines, enzymes, and other industrial products, all of which may have unknown impacts ...
Seaweeds are a fascinating and diverse group of organisms living in
... Although they have many plant-like features seaweeds are not true vascular plants; they are algae. Algae are part of the Kingdom Protista, which means that they are neither plants nor animals. Seaweeds are not grouped with the true plants because they lack a specialized vascular system (an internal ...
... Although they have many plant-like features seaweeds are not true vascular plants; they are algae. Algae are part of the Kingdom Protista, which means that they are neither plants nor animals. Seaweeds are not grouped with the true plants because they lack a specialized vascular system (an internal ...
PDF 1.1 MB - LUCID EAST AFRICA
... Rangelands carry over 25% of Kenya’s human population, support more than a half of the total livestock population and a large number of various species of wildlife (MEC, 1999; Brown, 1994). These wildlife species and the human population have co-existed without adverse effects on the range resources ...
... Rangelands carry over 25% of Kenya’s human population, support more than a half of the total livestock population and a large number of various species of wildlife (MEC, 1999; Brown, 1994). These wildlife species and the human population have co-existed without adverse effects on the range resources ...
Common Brushtail Possum - Natural Resources South Australia
... Map is not intended to indicate spatial distribution of the species, only the bioregions in which the species is found. ...
... Map is not intended to indicate spatial distribution of the species, only the bioregions in which the species is found. ...
Kamau_LUCID_WP36
... Rangelands carry over 25% of Kenya’s human population, support more than a half of the total livestock population and a large number of various species of wildlife (MEC, 1999; Brown, 1994). These wildlife species and the human population have co-existed without adverse effects on the range resources ...
... Rangelands carry over 25% of Kenya’s human population, support more than a half of the total livestock population and a large number of various species of wildlife (MEC, 1999; Brown, 1994). These wildlife species and the human population have co-existed without adverse effects on the range resources ...
a wide range of insect herbivores thus preventing many potential
... of remnant vegetation are thought to be important as a habitat for feral honey bees, native pollinators and natural enemies of pests. ...
... of remnant vegetation are thought to be important as a habitat for feral honey bees, native pollinators and natural enemies of pests. ...
One is the Loneliest Number
... stability. Areas that have been cultivated or changed for human use often have less biodiversity; these “monocultures,” or the growing of single crops over a wide area, have specific effects on all of the organisms in the area. It’s often possible to observe the effects of monoculture in areas that ...
... stability. Areas that have been cultivated or changed for human use often have less biodiversity; these “monocultures,” or the growing of single crops over a wide area, have specific effects on all of the organisms in the area. It’s often possible to observe the effects of monoculture in areas that ...
WATER FRAMEWORK DIRECTIVE – Reference Conditions and Eutrophication Impacts in Irish Rivers (2000-FS-2-M1)
... treated sections of the split-stream experiment. Paul and ...
... treated sections of the split-stream experiment. Paul and ...
Small Mammals: Pests or Vital Components of the Ecosystem
... They are more efficient in effecting the mineralization of organic matter than either insects or ungulates (Golley et al. 1975). As much as 58% of the total herbage harvested by small mammmals on a shortgrass prairie was not consumed (Scott et al. 1979). These "wastage" activities may be important i ...
... They are more efficient in effecting the mineralization of organic matter than either insects or ungulates (Golley et al. 1975). As much as 58% of the total herbage harvested by small mammmals on a shortgrass prairie was not consumed (Scott et al. 1979). These "wastage" activities may be important i ...
Environmental adaptation to lagoon systems
... may have a competitive advantage over a second species whieh is less efficient in that more energy is available for other fu nctions, such as dcfending a habitat , finding a mate, or caplUring food . Another line of research is to report on the unexpected distribution o f organ isms into eoastal lag ...
... may have a competitive advantage over a second species whieh is less efficient in that more energy is available for other fu nctions, such as dcfending a habitat , finding a mate, or caplUring food . Another line of research is to report on the unexpected distribution o f organ isms into eoastal lag ...
Protists in soil ecology and forest nutrient cycling
... Abstract: Recent progress in protistology has shown that these organisms (protists) are far more diverse than traditionally assumed by soil ecologists. Most studies have grouped these into motility groups, as amoebae, flagellates, and ciliates. Unfortunately, these do not represent functionally usef ...
... Abstract: Recent progress in protistology has shown that these organisms (protists) are far more diverse than traditionally assumed by soil ecologists. Most studies have grouped these into motility groups, as amoebae, flagellates, and ciliates. Unfortunately, these do not represent functionally usef ...
Ecology Self-study guide
... Ecology self-study guide UNIT OBJECTIVES: A. Be able to identify the various ecological levels of organization found in the biosphere. Explain the idea of interconnectedness and how it relates to food webs and nutrient cycles. (Pages 359-362) B. Be able to explain how organisms react to changes eith ...
... Ecology self-study guide UNIT OBJECTIVES: A. Be able to identify the various ecological levels of organization found in the biosphere. Explain the idea of interconnectedness and how it relates to food webs and nutrient cycles. (Pages 359-362) B. Be able to explain how organisms react to changes eith ...