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INTERACTIONS WITHIN COMMUNITIES • A community is all the
INTERACTIONS WITHIN COMMUNITIES • A community is all the

...  The greater the niche overlap is between populations the more competition that is experienced.  If resources are limited then two species could not remain in competition for the same niche indefinitely; Gause’s principle.  There are three effects of interspecific competition: 1. The population s ...
Species Related Terms and Concepts
Species Related Terms and Concepts

... Mutualism, Commensalism, Interference Competition, Exploitation Competition, Competitive Exclusion, Resource Partitioning, Realized Niche, Fundamental Niche, Predator-Prey Relationship (in food chain or web arrows go towards higher trophic level) ...
Geography of Extinctions
Geography of Extinctions

... presumed extinct; another 65% endangered, threatened, or candidates for listing • Plants last 400 yr, 600 species (176 in US) ...
22-3 interactions among living things notes
22-3 interactions among living things notes

... species that benefits at least one of the species • 3 types of symbiosis: *mutualism-both species benefit *commensalism-one species benefits and the other is neither ...
File
File

...  if there was no competition, an organism’s niche could be very large (fundamental niche), but because competition does exist, organisms are limited in the lifestyles they can actually live and the resources they can actually use (realized niche)  example: mangrove trees versus other tree species ...
Populations C-5-1 - Crestwood School's
Populations C-5-1 - Crestwood School's

... – one org. eats another – back and forth adjustment between the 2 results in coevolution – ex: the faster the prey gets, the faster the predator gets and vice versa ...
Ecosystem: All interacting parts of a biological community and its
Ecosystem: All interacting parts of a biological community and its

... and its environment; a group of living organisms that, along with their abiotic environment, form a self-regulating system through which energy and materials are transferred. Biotic: living ...
File
File

... Dead organisms are only considered to be living as long as they are still composed of cells. Abiotic Factors: parts of an ecosystem that have never been living or are now no longer composed of cells. ...
Community Ecology Notes
Community Ecology Notes

... ___________________ against predators include: o Cryptic ______________________ - when a animal is ______________________ in its coloring o Aposematic Coloration (or _______________ coloration) – when a _________________ animal is brightly colored as a warning to other animals o Batesian ___________ ...
File
File

... ...
Adaptation strategy - Wisconsin Initiative on Climate Change Impacts
Adaptation strategy - Wisconsin Initiative on Climate Change Impacts

... Wildlife and Fisheries Impacts and Strategies ...
Think like an Ecologist… a scientist who studies the relationships
Think like an Ecologist… a scientist who studies the relationships

... Extinct: A species that is no longer living on earth. We know of their existence through studying the fossil record. Food web: The combination of all the feeding relationships that exist in an ecosystem. Most prey species are eaten by many different predators and most predators eat more than one pr ...
Species and Communities
Species and Communities

... The number of species on an island reflects a balance between rates of immigration (colonization) and extinction. Extinction rates increase and immigration rate decrease as the number of species present on an island increases. The intersection of the two curves for any particular island size defines ...
species interactions
species interactions

... eliminated from the community because it is worse at getting the resource 3.Reduced niche size – species lives in a more limited environment than it can actually tolerate 4.Character displacement – competitors evolve slight differences so they no longer compete for the same resource ...
Chapter 8 Word Study - Understanding Populations
Chapter 8 Word Study - Understanding Populations

... Directions: Study the following words by reading and rereading them each evening so you will be prepared for the word study test each week. You may use one index card to write as many words and definitions on as possible to use for the test. The card must written in ink, be in your handwriting, and ...
4.2 Notes
4.2 Notes

... organism lives. Includes both the biotic & abiotic factors Niche: the full range of physical & biological conditions in which an organism lives & the way in which the organism uses those conditions ...
Homework
Homework

... stratification, distribution of the populations and species Species diversity: number of different species Species abundance: number of individuals of each species Niche structure: number of ecological niches, how they resemble or differ from each other, species interactions ...
Predators and Food Webs Direct vs. Indirect Effects Keystone
Predators and Food Webs Direct vs. Indirect Effects Keystone

... Indirect effect- a change in the phenotype or abundance of a species caused by a species it does not interact with directly. ...
Ch 5 Evolution of Biodiversity Content
Ch 5 Evolution of Biodiversity Content

... Bottleneck effect Founder effect Geographic isolation Niche generalist Niche specialist Mass extinction ...
Focal Species Literally meaning “those species
Focal Species Literally meaning “those species

... species may provide an umbrella function for other species or represent large groups of other species, they may be “ecosystem engineers” in that they are responsible for the shape, form, and function of major ecological processes, and/or they may provide an efficient way to represent a planning goal ...
6-1 A Changing Landscape
6-1 A Changing Landscape

... A. Habitat Alteration Habitat Alteration splitting of ecosystems into small fragments ...
Sustaining Biodiversity – The Species Approach
Sustaining Biodiversity – The Species Approach

... expected to increase ...
Northern Brown Kiwi
Northern Brown Kiwi

... birds by introduced predators such as stoats, Mustela erminea. The clearance of habitat fragments continues to threaten small populations of this species, while new avian diseases are also a potential threat. Conservation measures for the Northern Brown Kiwi currently underway include intensive moni ...
4.2.2-.4 Causes of Extinction
4.2.2-.4 Causes of Extinction

...  These are past their reproductive years and may lead to further decline  Geographic range and fragmentation:  Wide range makes the species less likely to be ...
An interaction in which one organism kills and eats
An interaction in which one organism kills and eats

... An environmental factor that prevents a population from increasing ...
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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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