Knowing Your Warblers
... degree through diet overlap. Three Dendroica, the Blackburnian, Black-throated Green, and Baybreasted, showed negative density dependence within local habitats, and reduced diet overlap through differences in where and how they fed. These were candidates for niche differentiation. The Cape May, a ra ...
... degree through diet overlap. Three Dendroica, the Blackburnian, Black-throated Green, and Baybreasted, showed negative density dependence within local habitats, and reduced diet overlap through differences in where and how they fed. These were candidates for niche differentiation. The Cape May, a ra ...
G. Evelyn Hutchinson
... Hutchinson, G.E., and V.T. Bowen. 1947. A direct demonstration of the phosphorus cycle in a small lake. Proc. Nat. Acad. Sci. US. 33:148-153. Hutchinson, G.E. 1950. Limnological studies of Connecticut. IX. A quantitative radio-chemical study of the phosphorus cycle in Linsley Pond. Ecology. 31:194-2 ...
... Hutchinson, G.E., and V.T. Bowen. 1947. A direct demonstration of the phosphorus cycle in a small lake. Proc. Nat. Acad. Sci. US. 33:148-153. Hutchinson, G.E. 1950. Limnological studies of Connecticut. IX. A quantitative radio-chemical study of the phosphorus cycle in Linsley Pond. Ecology. 31:194-2 ...
Rethinking Adaptation the niche
... The argument that niche construction can be disregarded because it is partly a product of natural selection makes no more sense than the proposition that natural selection can be disregarded because it is partly a product of niche construction. Because organisms’ prior niche-constructing activity wo ...
... The argument that niche construction can be disregarded because it is partly a product of natural selection makes no more sense than the proposition that natural selection can be disregarded because it is partly a product of niche construction. Because organisms’ prior niche-constructing activity wo ...
The role of behavioural variation in the invasion of
... or as a consequence of longer term selection for individuals that are better at finding mates in situations of low conspecific density, is unknown. Plastic responses might also occur as accidents of a changed environment during invasion. For example, many frog species alter both their behaviour and ...
... or as a consequence of longer term selection for individuals that are better at finding mates in situations of low conspecific density, is unknown. Plastic responses might also occur as accidents of a changed environment during invasion. For example, many frog species alter both their behaviour and ...
The Role of Pinnipeds in the Ecosystem - Zoology, UBC
... Ecosystems and Ecosystem Roles Ecosystems are dynamic systems where physical, chemical and biological processes interplay (Mann and Lazier 1991). There are basically two types of marine ecosystems: deep sea and shelf areas (Laevastu et al. 1996). Shelves are dominated by zooplankton, benthos, fish ...
... Ecosystems and Ecosystem Roles Ecosystems are dynamic systems where physical, chemical and biological processes interplay (Mann and Lazier 1991). There are basically two types of marine ecosystems: deep sea and shelf areas (Laevastu et al. 1996). Shelves are dominated by zooplankton, benthos, fish ...
Evolution Mini
... 11. Both insects and bats have developed wings, but they are not closely related. This is most likely an example of a. co-evolution c. microevolution b. convergent evolution d. genetic drift 12. Which best describes Lamarck’s older (& incorrect theory of evolution)? a. Organisms change in their lif ...
... 11. Both insects and bats have developed wings, but they are not closely related. This is most likely an example of a. co-evolution c. microevolution b. convergent evolution d. genetic drift 12. Which best describes Lamarck’s older (& incorrect theory of evolution)? a. Organisms change in their lif ...
AICE Marine Science AS Level
... • symbiosis, with examples including coral and zooxanthellae, cleaner fish and grouper, chemosynthetic bacteria and tube worms • parasitism, with examples including tuna and nematodes 3. (c) explain the meanings of the terms producer, consumer, predator, prey and trophic level in the context of food ...
... • symbiosis, with examples including coral and zooxanthellae, cleaner fish and grouper, chemosynthetic bacteria and tube worms • parasitism, with examples including tuna and nematodes 3. (c) explain the meanings of the terms producer, consumer, predator, prey and trophic level in the context of food ...
Similarities and Differences Among Living Organisms
... the cell. A group of cells with a similar function is called a tissue. Groups of tissues working together to perform a common function are called organs. An example of this would include the nervous, muscle, and other tissues which make up the heart. Groups of organs working together to perform a co ...
... the cell. A group of cells with a similar function is called a tissue. Groups of tissues working together to perform a common function are called organs. An example of this would include the nervous, muscle, and other tissues which make up the heart. Groups of organs working together to perform a co ...
Environmental Biology & Genetics
... An ecosystem is a natural unit composed of living organisms and their non-living environment, e.g. a woodland. A habitat is the place where an organism lives, e.g. greenfly live on the leaves of the trees. An organism’s niche is the role it plays within the ecosystem e.g a tawny owl is top predat ...
... An ecosystem is a natural unit composed of living organisms and their non-living environment, e.g. a woodland. A habitat is the place where an organism lives, e.g. greenfly live on the leaves of the trees. An organism’s niche is the role it plays within the ecosystem e.g a tawny owl is top predat ...
Name:
... 24. Describe the storage of energy in the layers of Earth’s oceans and how heat storage affects Earth’s atmosphere. 25. Describe the effects of surface currents on climate. 26. What is the biosphere? 27. In what ways are Earth considered both a closed and open system? 28. What is an ecosystem? A com ...
... 24. Describe the storage of energy in the layers of Earth’s oceans and how heat storage affects Earth’s atmosphere. 25. Describe the effects of surface currents on climate. 26. What is the biosphere? 27. In what ways are Earth considered both a closed and open system? 28. What is an ecosystem? A com ...
... Hybrid Sterility: Infertility: Hybrid offspring might grow to viable adults, but these are infertile and cannot produce further offspring This shuffling, along with sexual reproduction, leads to variation within populations. This variation leads to selection, which ultimately leads to evolution. – ...
organisms and populations
... ARCHAEBACTERIA – They flourish in hot water springs, deep sea hydrothermal vents, and temperature exceeds 100oC. FISHES – Many fishes thrive in Antarctic water, temperature below zero. MARINE INVERTEBRATES- FISHES – These organisms live at great depth in the ocean where the pressure could be >100 ti ...
... ARCHAEBACTERIA – They flourish in hot water springs, deep sea hydrothermal vents, and temperature exceeds 100oC. FISHES – Many fishes thrive in Antarctic water, temperature below zero. MARINE INVERTEBRATES- FISHES – These organisms live at great depth in the ocean where the pressure could be >100 ti ...
Marine Ecosystems and Nutrient Cycles
... while bacterial decomposition of this organic "rain" continues beneath the photic zone, the released nutrients are effectively sequestered from the photic zone by the strong density difference between the mixed layer and the deep-water layer, as marked by the thermocline. Thus, if vigorous productiv ...
... while bacterial decomposition of this organic "rain" continues beneath the photic zone, the released nutrients are effectively sequestered from the photic zone by the strong density difference between the mixed layer and the deep-water layer, as marked by the thermocline. Thus, if vigorous productiv ...
16 The Biosphere and Ecological Relationships
... The term ecosphere refers to the global ecosystem, the complex web of interactions between all living organisms on our planet and the non-living environments they interact with. It’s a term which suggests that our planet is like a living entity which balances itself to maintain its life support syst ...
... The term ecosphere refers to the global ecosystem, the complex web of interactions between all living organisms on our planet and the non-living environments they interact with. It’s a term which suggests that our planet is like a living entity which balances itself to maintain its life support syst ...
Stage proposal
... studies, and has not been conducted in field experiments before now. Firstly, this experiment has been set up to test various plant interaction hypotheses within the context defined above. Secondly, an interest has developed in determining the extent of arthropod diversity in agricultural landscapes ...
... studies, and has not been conducted in field experiments before now. Firstly, this experiment has been set up to test various plant interaction hypotheses within the context defined above. Secondly, an interest has developed in determining the extent of arthropod diversity in agricultural landscapes ...
ECOSYSTEM FUNCTION, PRINCIPLES OF
... field that ecosystem primary productivity increases with increasing plant species diversity. The theoretical basis for the expectation that productivity and diversity should be related derives from an understanding of how limiting resources (water and nutrients) are distributed in ecosystems and an a ...
... field that ecosystem primary productivity increases with increasing plant species diversity. The theoretical basis for the expectation that productivity and diversity should be related derives from an understanding of how limiting resources (water and nutrients) are distributed in ecosystems and an a ...
- UW Catalyst
... Sustainability What needs to be sustained? What is the purpose of the global economy? Why is purpose important in human systems? ...
... Sustainability What needs to be sustained? What is the purpose of the global economy? Why is purpose important in human systems? ...
The Ecological Role of the Mammalian Mesocarnivore
... just two or three packs (McLaren and Peterson 1994). Thus, it is clear that a relatively small number of large carnivores can directly or indirectly influence multiple trophic levels and precipitate community-level cascades that increase the abundance of primary producers, ultimately modifying habit ...
... just two or three packs (McLaren and Peterson 1994). Thus, it is clear that a relatively small number of large carnivores can directly or indirectly influence multiple trophic levels and precipitate community-level cascades that increase the abundance of primary producers, ultimately modifying habit ...
The Ecological Role of the Mammalian Mesocarnivore
... just two or three packs (McLaren and Peterson 1994). Thus, it is clear that a relatively small number of large carnivores can directly or indirectly influence multiple trophic levels and precipitate community-level cascades that increase the abundance of primary producers, ultimately modifying habit ...
... just two or three packs (McLaren and Peterson 1994). Thus, it is clear that a relatively small number of large carnivores can directly or indirectly influence multiple trophic levels and precipitate community-level cascades that increase the abundance of primary producers, ultimately modifying habit ...
Chapter 3 Environment: The Science behind the Stories 4th Edition
... b) Species have higher reproductive success and higher survival. c) Species have higher reproductive success and lower survival. d) Species have lower reproductive success and higher survival. ...
... b) Species have higher reproductive success and higher survival. c) Species have higher reproductive success and lower survival. d) Species have lower reproductive success and higher survival. ...
Role of biotic interactions in a semiarid scrub community in north
... often asked is to what extent is the presence, abundance or distribution of an organism in a particular community determined by processes ...
... often asked is to what extent is the presence, abundance or distribution of an organism in a particular community determined by processes ...
Ecological consequences of human niche
... growing capacities for advanced cognition and demographic and geographic expansion, along with an exponential increase in the scope and impact of human niche constructing activities (7) that have culminated in fundamental changes to planetary ecosystems. Drawing upon findings from a range of new ...
... growing capacities for advanced cognition and demographic and geographic expansion, along with an exponential increase in the scope and impact of human niche constructing activities (7) that have culminated in fundamental changes to planetary ecosystems. Drawing upon findings from a range of new ...
Benthic Ecology and Demersal Resources
... How these are distributed over different type of sea bed and particular season favors any particular group of organisms and in turn these support specific fishery is an important issue ...
... How these are distributed over different type of sea bed and particular season favors any particular group of organisms and in turn these support specific fishery is an important issue ...
Environmental impact of pesticides
... of changes in their prey availability . Other non-target species Effect of pesticides on bees are closely watched because their crop pollination. However, little is known about the impacts of pesticides on wild pollinators in the field. Eew years before we were seeing three type of wild bees (smal ...
... of changes in their prey availability . Other non-target species Effect of pesticides on bees are closely watched because their crop pollination. However, little is known about the impacts of pesticides on wild pollinators in the field. Eew years before we were seeing three type of wild bees (smal ...
Ecology
Ecology (from Greek: οἶκος, ""house""; -λογία, ""study of"") is the scientific analysis and study of interactions among organisms and their environment. It is an interdisciplinary field that includes biology and Earth science. Ecology includes the study of interactions organisms have with each other, other organisms, and with abiotic components of their environment. Topics of interest to ecologists include the diversity, distribution, amount (biomass), and number (population) of particular organisms; as well as cooperation and competition between organisms, both within and among ecosystems. Ecosystems are composed of dynamically interacting parts including organisms, the communities they make up, and the non-living components of their environment. Ecosystem processes, such as primary production, pedogenesis, nutrient cycling, and various niche construction activities, regulate the flux of energy and matter through an environment. These processes are sustained by organisms with specific life history traits, and the variety of organisms is called biodiversity. Biodiversity, which refers to the varieties of species, genes, and ecosystems, enhances certain ecosystem services.Ecology is not synonymous with environment, environmentalism, natural history, or environmental science. It is closely related to evolutionary biology, genetics, and ethology. An important focus for ecologists is to improve the understanding of how biodiversity affects ecological function. Ecologists seek to explain: Life processes, interactions and adaptations The movement of materials and energy through living communities The successional development of ecosystems The abundance and distribution of organisms and biodiversity in the context of the environment.Ecology is a human science as well. There are many practical applications of ecology in conservation biology, wetland management, natural resource management (agroecology, agriculture, forestry, agroforestry, fisheries), city planning (urban ecology), community health, economics, basic and applied science, and human social interaction (human ecology). For example, the Circles of Sustainability approach treats ecology as more than the environment 'out there'. It is not treated as separate from humans. Organisms (including humans) and resources compose ecosystems which, in turn, maintain biophysical feedback mechanisms that moderate processes acting on living (biotic) and non-living (abiotic) components of the planet. Ecosystems sustain life-supporting functions and produce natural capital like biomass production (food, fuel, fiber and medicine), the regulation of climate, global biogeochemical cycles, water filtration, soil formation, erosion control, flood protection and many other natural features of scientific, historical, economic, or intrinsic value.The word ""ecology"" (""Ökologie"") was coined in 1866 by the German scientist Ernst Haeckel (1834–1919). Ecological thought is derivative of established currents in philosophy, particularly from ethics and politics. Ancient Greek philosophers such as Hippocrates and Aristotle laid the foundations of ecology in their studies on natural history. Modern ecology became a much more rigorous science in the late 19th century. Evolutionary concepts relating to adaptation and natural selection became the cornerstones of modern ecological theory.