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Community Interactions and Populations
Community Interactions and Populations

... • When organisms of the same or different species attempt to use an ecological resource at the same place and the same time – Resource any necessity to life – Plants and animals compete – Winner and losers ...
National Platform for Biodiversity Research
National Platform for Biodiversity Research

... – Address control measures for IAS across a range of habitats, species and scales. – Reduce the impact of Ireland as a donor to other countries and biogeographical provinces. – Understand the impact of some alien invasive species on other alien invasive species. ...
Extinctions, Endangered Species, and Hope
Extinctions, Endangered Species, and Hope

... -> They defend their nest from a 50 foot radius and has caused many deaths of pets, livestock, and people who could not escape the chasing bee; hence the name “killer bee.” ->They are using up the resources in the rain forest, especially in Brasil. -> They move to places with resources- have good co ...
Ecology Intro - Lake Stevens High School
Ecology Intro - Lake Stevens High School

...  graphical representation of number of organisms alive in a population over ...
Chapter 9 Study Guide
Chapter 9 Study Guide

... conditions. Behavioral adaptations are behaviors or actions of an organism that helps it adapt. Structural adaptations are physical characteristics or structures an organism has that help it adapt. Be able to identify or give examples of behavioral and structural adaptations. LESSON 9.4 *The resourc ...
Ecological Concepts Carrying Capacity
Ecological Concepts Carrying Capacity

... Carrying Capacity  The maximum number of individuals of a particular species that an ecosystem can support.  Once a population reaches the carrying capacity, a variety of factors act to stabilize it at that size.  Birth rate=death rate; ...
Niche
Niche

... Symbiosis is a close ecological relationship between two or more organisms of different species that live in direct contact with one another.  Mutualism: Both species benefit from one another. Example: bat & cactus  Commensalism: One species benefits from the other, the other is neither helped no ...
Riparian Brush Rabbit
Riparian Brush Rabbit

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5.4 WS

... An organism that depends on another without killing it is a ____________________. A nation where most of the people eat a primarily vegetarian diet will be able to support a ____________________population than it would if the people ate a lot of meat. Two populations of a deer species are separated ...
Island Biogeography: Species Richness
Island Biogeography: Species Richness

... • Interspecific differences and species interactions – Assumed immigration, extinction, and turnover as stochastic – Species richness not composition ...
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Invasive species transform ecosystems by using excessive

... abundance. Invasive species may displace local native species, therefore, apart from their economic implications; alien invasions may result in extensive changes in the structure, composition and global distribution of the biota of the sites of introduction, ultimately leading to the homogenisation ...
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Interspecies Interactions

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CHAPTER 13
CHAPTER 13

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Austin Brown Interactions Within Communities Definitions

... Realized Niche: biological characteristics of the organism and resources individuals in a population actually use under prevailing environmental conditions. Symbiosis: interactions in which two species maintain a close relationship. (parasitism, mutualism, and commensalism) Interference: aggression ...
Indirect commensalism
Indirect commensalism

... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
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Types of species interactions

...  Natural selection favors parasites that do not kill their host too quickly  Have complex life cycles Types of species interactions Interactions between processes  Different processes can be going on at same time  Predation and parasitism can reduce competition  Species may have indirect effect ...
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Interactions Within Communities (III)

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Understanding Our Environment
Understanding Our Environment

... whose impact on its community or ecosystem is much larger and more influential than would be expected from mere abundance.  Large predators  Critical food organisms (bamboo and pandas)  Often, many species are intricately interconnected so that it is difficult to tell which is the essential compo ...
“Invasive” Plants - MSU Department of Geography
“Invasive” Plants - MSU Department of Geography

... • Several studies have documented the negative impacts of common carp on shallow water ecosystems such as reduction of wild celery and increased cycling of nutrients. • Zebra mussels filter water leads to increase of native aquatic plants including wild celery and may contribute to decline of Eurasi ...
Biological Communities CH 17-1
Biological Communities CH 17-1

... both shallow and deeper depths, but cannot out compete Balarus for space. This makes its realized niche in the shallow portion of the ocean ...
Biodiversity
Biodiversity

... Biodiversity and its ecological processes sustain our lives and the lives of other species with which we share the planet – plants produce the oxygen in the atmosphere, microorganisms decompose waste products and recycle nutrients; wetlands filter pollutants and cleanse our waters; insects, birds an ...
Invasive Exotics
Invasive Exotics

... • Ranges shift, but limited by barriers • major or seemingly minor ~ mountains or soil pH • short or enduring ...
APES Chapter 4 Study Guide - Bennatti
APES Chapter 4 Study Guide - Bennatti

... Discuss some of the factors that should be included when describing an organism’s niche. ...
Lecture #3 Competition & Niches
Lecture #3 Competition & Niches

... of the trees, even though the insects that it eats are located throughout the tree. • They are only occupying a portion of their fundamental niche. ...
Document
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... by evolving differences in resource use. Resource partitioning occurs when natural selection acts to favor individuals of species that reduce competition by becoming more specialized. ...
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Occupancy–abundance relationship

In ecology, the occupancy–abundance (O–A) relationship is the relationship between the abundance of species and the size of their ranges within a region. This relationship is perhaps one of the most well-documented relationships in macroecology, and applies both intra- and interspecifically (within and among species). In most cases, the O–A relationship is a positive relationship. Although an O–A relationship would be expected, given that a species colonizing a region must pass through the origin (zero abundance, zero occupancy) and could reach some theoretical maximum abundance and distribution (that is, occupancy and abundance can be expected to co-vary), the relationship described here is somewhat more substantial, in that observed changes in range are associated with greater-than-proportional changes in abundance. Although this relationship appears to be pervasive (e.g. Gaston 1996 and references therein), and has important implications for the conservation of endangered species, the mechanism(s) underlying it remain poorly understood
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