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Being and Environmental Scientist Unit Study Guide (8/17 – 8/28
Being and Environmental Scientist Unit Study Guide (8/17 – 8/28

... within an ecosystem thereby causing it to become stable. 21. True or False. Fluctuations in predator–prey populations are predictable. At some point the prey population grows so numerous that they are easy to find. 22. What does a graph of predator–prey density over time show? how the cycle of fluct ...
Honors Biology - LangdonBiology.org
Honors Biology - LangdonBiology.org

... 1. You should be able to define ecology and the different levels in an ecosystem: niche, population, community, ecosystem, biome, and biosphere 2. Be able to relate the ecological concept of niche to what you learned in evolution. (i.e., what happens when an organism tries to move into a niche that ...
chapter 4-ecological succession
chapter 4-ecological succession

... Primary Succession ecological succession-the predictable and orderly changes that occur over time in a community of plant and animals. ...
Chapter 7
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... (h) When touched, snake caterpillar changes shape to look like head of snake. Fig. 7-8h, p. 153 ...
Bio1C lecture 1F08
Bio1C lecture 1F08

... What is Ecology? • The scientific study of the interactions between organisms and their environments is called ecology • provides a basic understanding of how natural processes and organisms interact, • gives us the tools we need to manage the planet’s limited resources over the long term ...
Evolution and Biodiversity
Evolution and Biodiversity

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Species Interactions and Competition Introduction Competition
Species Interactions and Competition Introduction Competition

... competitive exclusion (Hardin 1960). The outcomes of competition between two species can be predicted using equations, and one of the most well known is the Lotka-Volterra model (Volterra 1926, Lotka 1932). This model relates the population density and carrying capacity of two species to each other ...
Chapter 1 - Kennedy APES
Chapter 1 - Kennedy APES

... ecological succession (p. 213) primary succession (p. 213) secondary succession (p. 213) pioneer species (p. 214) ...
Summer Quiz #1 - Plain Local Schools
Summer Quiz #1 - Plain Local Schools

... E. Bare soil is acidic due to the carbonate compounds in the parent rocks. 18. _____ views a community as the chance assemblage of organisms with similar abiotic needs. A. The niche concept B. H. A. Gleason C. Species richness D. Commensalism E. F. E. Clements's hypothesis ...
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sxES_G6_RNG_ch10-B_179-188.fm

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Tritagonist as a new term for uncharacterised
Tritagonist as a new term for uncharacterised

... species and thus laid the foundation to link the evolutionary and genetic diversity with biological functions (Wu et al., 2009; Bulgarelli et al., 2013; Rinke et al., 2013; Panke-Buisse et al., 2015). The indepth sequence-based knowledge about the microbial species composition of various habitats an ...
Language Arts - Warren County Schools
Language Arts - Warren County Schools

... which belongs to a population of other members of its species. The population belongs to a community of different species. The community and abiotic factors together form an ecosystem. To be considered a community, the different populations must live close enough together to interact. One way the po ...
Ecology -Communities (Part 2)-
Ecology -Communities (Part 2)-

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populations

... • The Everglades is America's only sub-tropical wilderness and visitors travel from all over the world over to experience its ...
to pdf - X
to pdf - X

... two organisms of different species. While it is often assumed that this relationship is mutually beneficial, it is, however, not always the case. Symbiotic relationships include mutualism, commensalism and parasitism. In mutualism, different species have a cooperative or mutually dependent relations ...
Chapter 5 - Kennedy APES
Chapter 5 - Kennedy APES

... 4. Intense natural selection forces exist between predator and prey populations. This can lead to coevolution, or when changes in the gene pool of one species lead to changes in another species. C. Parasites live on or in another species. The host of this arrangement is obviously harmed by it but it ...
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... • Is concerned with the interaction of populations. One form of interaction is interspecific competition (between two different species). The following are ways this competition can be resolved: – Competitive Exclusion Principle- when two species compete for exactly the same resource (or occupy the ...
Energy - Winona State University
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Concepts in the study of Evolution
Concepts in the study of Evolution

... Gradualism - The concept that evolution is slow and steady change as envisioned by Darwin. Punctuated Equilibrium - The concept that evolutionary change is not steady, but rather, there are periods of relative equilibrium punctuated by periods of rapid divergence of species. Mass extinctions create ...
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pages 36 to 42

... distribution limit on the eastern side of the North Island near the Kakahu Stream (approx. 37° 59' S). Kauri does extend a little further south on the western side of North Island (38° 07' S) (Ecroyd 1982). On the Papamoa Hills a few rickers mark its eastern limit (approx. 176° 13' E). b) Leionema ...
Ecology - Dominican
Ecology - Dominican

... Climatic factors: Aspects of the weather that influence an ecosystem. Edaphic factors: Aspects of the soil that influence an ecosystem. Niche: The functional role of an organism in an ecosystem, i.e. how it feeds, what it eats, who eats it etc. Nutrient recycling: The continual reuse and reprocessin ...
Symbiotic Relationships
Symbiotic Relationships

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E) Community_Interactions_Practice_S

... COMMUNITY INTERACTIONS PRACTICE STUDENT - Community Interactions, pp 92-93 Define COMPETITION _________________________________________________________________ Define PREDATION: ___________________________________________________________________ Define SYMBIOSIS: ____________________________________ ...
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Ecological fitting



Ecological fitting is ""the process whereby organisms colonize and persist in novel environments, use novel resources or form novel associations with other species as a result of the suites of traits that they carry at the time they encounter the novel condition.” It can be understood as a situation in which a species' interactions with its biotic and abiotic environment seem to indicate a history of coevolution, when in actuality the relevant traits evolved in response to a different set of biotic and abiotic conditions. The simplest form of ecological fitting is resource tracking, in which an organism continues to exploit the same resources, but in a new host or environment. In this framework, the organism occupies a multidimensional operative environment defined by the conditions in which it can persist, similar to the idea of the Hutchinsonian niche. In this case, a species can colonize new environments (e.g. an area with the same temperature and water regime) and/or form new species interactions (e.g. a parasite infecting a new host) which can lead to the misinterpretation of the relationship as coevolution, although the organism has not evolved and is continuing to exploit the same resources it always has. The more strict definition of ecological fitting requires that a species encounter an environment or host outside of its original operative environment and obtain realized fitness based on traits developed in previous environments that are now co-opted for a new purpose. This strict form of ecological fitting can also be expressed either as colonization of new habitat or the formation of new species interactions.
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