Chapter 54 - Community Ecology Homework 1. Explain the differences between competition‚ predation‚ parasitism‚ mutualism‚ and commensalism and give an example of each. Competition- (–/– interaction) occurs when species compete for a resource in short supply example when an invasive species moves in it cause competition. Large insects defend feeding sites on cottonwood leaves by kicking and shoving smaller aphids from better sites. Predation- (+/– interaction) refers to an interaction in which
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with one another and their physical habitats they change the composition of the community which is called succession. ~Primary succession occurs in a preciously unoccupied area beginning with pioneer species that allow soil to develop paving the way for additional organisms to thrive. ~Secondary succession is more rapid than primary succession because soil does not have to build anew. ~Succession may lead toward a stable climax community but true long-term stability is rare. Pockets of local disturbance
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ways in which distinctive ecologies can develop along routeways (10 marks) Routeways such as roads‚ railways and canals can provide habitats for many species of plant and insect life because they often act as protected areas in which ecological succession can occur. There are several ways in which this can happen. One way in which ecologies can develop along routeways is that plant seeds‚ e.g. Oxford ragwort or buddleia‚ that have become windborne can be transported along by cars or trains and are
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Winthrop University’s Successional Plot’s Soil P.H. Meredith Hamilton Biology- Westover September 30‚ 2011 Abstract The question of this study pertained to the amount of vegetation that was occurring on each of the succession plot’s ground floor. There are three successional plots in Winthrop University’s wooded areas‚ the oldest was created in 1989 the second was created in 1994 and the youngest plot was created in 1999. For the hypothesis to be tested‚ there were soil PH meters to
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This chapter covers Ecology and‚ as such‚ has a vocabulary all its own – which is often examined. Environment: All the organisms (biotic) and the conditions (abiotic) which exist in an area Abiotic factors: all the non-living factors in an environment‚ such as rainfall‚ temperature‚ soil. Biotic factors: All the living organisms in an area – such as producers‚ predators and parasites. Population: All the members of one species living in an area Community: The total of all the populations living in
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on the succession development‚ whereas others have a dramatic influence over a long period of time‚ such as human activity. These factors‚ over time‚ result in the progression of a succession until the climatic climax vegetation is reached. However‚ sometimes these factors can mean that a plagioclimax is reached‚ as they prevent the succession from progressing any further and the climatic climax vegetation is never achieved‚ which in the UK are Oak‚ Hawthorne and Birch trees. This succession results
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Ecological Succession Ecosystems are constantly changing in response to natural and human disturbances. Changes that occur in a community over time is called ecological succession. Succession can be a slow and gradual response to physical changes such as a change in rainfall or temperature. Succession can also be abrupt due to such things as fires or volcanoes. There are two kinds of succession: 1. Primary succession 2. Secondary succession Primary succession occurs on surfaces
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represents the niche of species A. Species A is biologically constrained from the striped area of its niche by species B. This is an example of A) dynamic stability. B) facilitation. C) commensalism. D) competitive exclusion. E) secondary succession. Answer: D Topic: Concept 53.1 Skill: Application 6) The sum total of an organism’s interaction with the biotic and abiotic resources of its environment is called its A) habitat. B) logistic growth. C) biotic potential. D) microclimax.
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APES Notes – Chapter 8 Community Ecology: Structure‚ Species Interactions‚ Succession‚ and Sustainability I. Appearance and Species Diversity A. The structure or spatial distribution of a community or ecosystem can be described by: a. Physical Appearance : relative sizes‚ stratification‚ and distribution of its population and species b. Species Diversity or Richness : the number of different species c. Species Abundance : the number of individuals of each species d. Niche Structure : the
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Ecological succession Reaction Paper “Change is the only thing that is constant” - Heraclitus. This is one of the few things that I agree to be the most correct term and ever applicable in everyday life. Well aside from I need to eat of course and that this world is full of all kinds of things‚ from small to big‚ to living to nonliving. Seemingly that here‚ everything is interconnected‚ in a way that everyone needs everything to survive. More of a give and take relationship. I thing that is what
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