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Competition Extinction Exotics
Competition Extinction Exotics

... column are from Lake Malawi, and are more closely related to one another than to any species within Lake Tanganyika. Note the similarities among color patterns and trophic morphologies. ...
Biology
Biology

... population size: (1) births, (2) deaths, (3) immigration, and (4) emigration. Increase in population occurs by birth and immigration. Decrease in population occurs by death and emigration. ...
Population Ecology
Population Ecology

... - extrinsic factor (weather, food supply, etc.) ...
Human Pop Growth notes Bio1 2013
Human Pop Growth notes Bio1 2013

Chapter 54: Community Ecology
Chapter 54: Community Ecology

... What is G. F. Gause’s competitive exclusion principle? Give one example. G. F. Gause’s competitive exclusion principle holds that two species competing for the same limiting resources cannot coexist permanently in the same place. In the absence of disturbance, one species will use the resources more ...
Question 1: (1 point) - University of Nebraska–Lincoln
Question 1: (1 point) - University of Nebraska–Lincoln

... maximum possible growth rate for the population? answer: 12.5 Question 11: (1 point) A fisheries biologist is maximizing her fishing yield by maintaining a population of lake trout at exactly 500 individuals. Predict the initial growth rate if the population is stocked with an additional 600 fish. A ...
Disturbance Stable States
Disturbance Stable States

... • Age of disturbed patches – link to diversity • Boulders – intermediate-sized boulders are most diverse ...
File - Ms. Poole`s Biology
File - Ms. Poole`s Biology

...  Removes water from the soil ...
Primary production
Primary production

... Produce more offsprings Each generation will be a bit better in capture its food Trade-off between being bigger and grow faster ...
Population lecture - Center for Bioinformatics
Population lecture - Center for Bioinformatics

What Is a Population
What Is a Population

... populations have plenty of food and space, and have no competition or predators. For example, population explosions occur when bacteria or molds grow on a new source of food. ...
Chp 14 Ecosystems
Chp 14 Ecosystems

... • A habitat is all aspects of the area in which an organism lives. – biotic factors – abiotic factors • An ecological niche includes all of the factors that a species needs to survive, stay healthy, and reproduce. – food – abiotic conditions – behavior ...
Chapter 7 Community Ecology
Chapter 7 Community Ecology

Here
Here

... abilities to reproduce.  K-strategists have few young (per birth and over their lifetimes) but ensure that their young survive to adulthood by providing a large amount of parental care. o These organisms usually have internal embryonic development. This requires a great deal of energy and time, so ...
9-12 - Wave Foundation
9-12 - Wave Foundation

... meat is still desired; however, a portion of the profits generated from these goods are contributed to alligator management and research. Increased pressures from invasive species and reduced prey populations can have negative effects on crocodilian species. As more prey items are harvested from th ...
Analysis of interspecific competition in perennial plants using life table
Analysis of interspecific competition in perennial plants using life table

... millefolium by 91%, 95% and 99% respectively. Values of ␭ with and without competition were 3.95 and 46.13 for T. pratense; 17.2 and 320.3 for A. odoratum; 2.31 and 248 for A. millefolium. Contribution of the lower-level vital rates Accuracy of the first-order approximation – The contribution of the ...
Community Ecology
Community Ecology

... some critical level where the other species is unable to replace its numbers by reproduction. • Exploitation does not always cause the exclusion of one species. They may coexist, with a decrease in their potential for growth. For this to occur, they must partition the resource. • Interference compet ...
Community Ecology
Community Ecology

Habitats - Wenatchee High School
Habitats - Wenatchee High School

Competition - Exploring the Lotke
Competition - Exploring the Lotke

... Ecological communities are composed of populations of all species in a habitat. The structure of a community will be determined in part by the dynamics of the interactions between the species in the community. Interactions between two species can be direct or indirect (i.e., mediated through other s ...
File
File

... o An examples is lichens and trees. Lichens receive more sunlight from being on the tree and the tree is not harmed or benefited. o Another example is clownfish and sea anemones. Clownfish receive protection and the anemones are neither harmed nor helped. o Another example is humans and eye mites. H ...
Slide 1
Slide 1

Problem set answers
Problem set answers

... the human population is now ~7 billion, what is the value of Q based on those 1988 parameters, and how large would the population be by the time a stationary age distribution was reached? Q = ([28 x 61]/[17 x 25]) x [.77/1.77] ...
File - Mr. Shanks` Class
File - Mr. Shanks` Class

... how many hawks are in an area or how many good nest sites & how much food! ...
Sample Final November 2007 File - Moodle
Sample Final November 2007 File - Moodle

... Identify the letter of the choice that best completes the statement or answers the question. Feel free to explain your answer in the margin if you feel that is necessary (e.g., no answer seems correct or two answers seem correct) ( 2 points each) ____ ...
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Storage effect

The storage effect is a coexistence mechanism proposed in the ecological theory of species coexistence, which tries to explain how such a wide variety of similar species are able to coexist within the same ecological community or guild. The storage effect was originally proposed in the 1980s to explain coexistence in diverse communities of coral reef fish, however it has since been generalized to cover a variety of ecological communities. The theory proposes one way for multiple species to coexist: in a changing environment, no species can be the best under all conditions. Instead, each species must have a unique response to varying environmental conditions, and a way of buffering against the effects of bad years. The storage effect gets its name because each population ""stores"" the gains in good years or microhabitats (patches) to help it survive population losses in bad years or patches. One strength of this theory is that, unlike most coexistence mechanisms, the storage effect can be measured and quantified, with units of per-capita growth rate (offspring per adult per generation).The storage effect can be caused by both temporal and spatial variation. The temporal storage effect (often referred to as simply ""the storage effect"") occurs when species benefit from changes in year-to-year environmental patterns, while the spatial storage effect occurs when species benefit from variation in microhabitats across a landscape.
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