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Ecosystem Functioning and Biodiversity
Ecosystem Functioning and Biodiversity

... (Costanza et al. 1997). These include food, from fisheries and aquaculture, for man and domestic ani­ mals; a number of mineral resources including oil, gas, sand and gravel; and ingredients for biotech­ nology (bioactive chemicals and medical products). Moreover the seas provide a free transport sy ...
Big APES Exam review questions for each unit
Big APES Exam review questions for each unit

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2306A Course Outline..

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Environmental Impacts of Nanotechnology
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Botanic Garden of the University of Coimbra = Scientists
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illustrations of interconnectedness in ecosystems

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Nicola Jane Barson

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The beta-diversity of species interactions: Untangling the drivers of

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18th Annual Graduate Student Symposium
18th Annual Graduate Student Symposium

... (PEEC) for their generosity in providing funding and resources for this event. PEEC is an interdisciplinary, campus-wide program designed to provide individualized training for graduate students for research and teaching careers in ecology and evolutionary biology and to produce scientists who are b ...
PREDATOR IDENTITY AND ECOLOGICAL IMPACTS
PREDATOR IDENTITY AND ECOLOGICAL IMPACTS

... Although grouping species has aided in the development of theory, the overall validity of the approach is essentially an empirical question: How similar are species within a trophic level in their effect on population, community, and ecosystem processes? Experiments designed to measure and compare t ...
Ecological Considerations in the Design of River and Stream
Ecological Considerations in the Design of River and Stream

... For an organism to survive it must have access to appropriate habitats. Habitat is a combination of physical and biological characteristics of an area (or areas) essential for meeting the food and other metabolic needs, shelter, breeding, and over-wintering requirements of a particular species. For ...
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... Food production varies dramatically in different parts of the world. In many places, people can only eat the foods that are grown or caught locally. In other places, like the United States, we have access to food from all over the world. How does this access to food affect us? How does it affect the ...
Rewilding and Biodiversity
Rewilding and Biodiversity

... White 1985, Foster 1986). Fire, for example, can have profound effects on ecosystem structure, diversity, and function, and might be referred to as a keystone process (Noss 1991). By the early 1980s biologists recognized that large carnivores—such as grizzly bears, wolves, and cougars— require exten ...
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BIO 150
BIO 150

... distribute themselves among habitats of different qualities, given that they are free to settle where the choose and that that they choose habitat so as to maximize their success (fitness). (a) Illustrate the logic of this model with a graph that shows the sequential settlement of your favorite beas ...
apex predators enable coexistence
apex predators enable coexistence

... method, and social stability [5,37,38,40]. Apex predators play a unique ecological role because they hunt large prey, have slow life cycles, and maintain large territories and low densities [41–43]. Their loss can result in population irruptions of mesopredators [44], that can reach much higher dens ...
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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.
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