About: R* rule (ecology)

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The R* rule (also called the resource-ratio hypothesis) is a hypothesis in community ecology that attempts to predict which species will become dominant as the result of competition for resources. The hypothesis was formulated by American ecologist David Tilman. It predicts that if multiple species are competing for a single limiting resource, then whichever species can survive at the lowest equilibrium resource level (i.e., the R*) can outcompete all other species. If two species are competing for two resources, then coexistence is only possible if each species has a lower R* on one of the resources. For example, two phytoplankton species may be able to coexist if one is more limited by nitrogen, and the other is more limited by phosphorus.

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rdf:type	book
rdfs:label	R* rule (ecology) (en)
rdfs:comment	The R* rule (also called the resource-ratio hypothesis) is a hypothesis in community ecology that attempts to predict which species will become dominant as the result of competition for resources. The hypothesis was formulated by American ecologist David Tilman. It predicts that if multiple species are competing for a single limiting resource, then whichever species can survive at the lowest equilibrium resource level (i.e., the R) can outcompete all other species. If two species are competing for two resources, then coexistence is only possible if each species has a lower R on one of the resources. For example, two phytoplankton species may be able to coexist if one is more limited by nitrogen, and the other is more limited by phosphorus. (en)
dcterms:subject	Community ecology Ecological theories Theoretical ecology
Wikipage page ID	48140275 (xsd:integer)
Wikipage revision ID	1021905006 (xsd:integer)
Link from a Wikipage to another Wikipage	Community ecology Universal adaptive strategy theory Community ecology G. David Tilman Functional response Ecological theories Relative growth rate Theoretical ecology Phytoplankton Size-asymmetric competition Competitive exclusion
sameAs	R* rule (ecology) R* rule (ecology) R* rule (ecology)
dbp:wikiPageUsesTemplate	dbt:Reflist dbt:Modelling_ecosystems
has abstract	The R* rule (also called the resource-ratio hypothesis) is a hypothesis in community ecology that attempts to predict which species will become dominant as the result of competition for resources. The hypothesis was formulated by American ecologist David Tilman. It predicts that if multiple species are competing for a single limiting resource, then whichever species can survive at the lowest equilibrium resource level (i.e., the R) can outcompete all other species. If two species are competing for two resources, then coexistence is only possible if each species has a lower R on one of the resources. For example, two phytoplankton species may be able to coexist if one is more limited by nitrogen, and the other is more limited by phosphorus. A large number of experimental studies have attempted to verify the predictions of the R* rule. Many studies have shown that when multiple plankton are grown together, the species with the lowest R* will dominate, or coexist if they are limited by multiple resources. There are fewer tests of the R* rule in communities of larger organisms, in part because of the difficulty of creating a situation in which only a single resource is limiting. However, some studies have used the R* rule with multiple resources to predict which groups of plants will be able to coexist. (en)
gold:hypernym	Hypothesis
prov:wasDerivedFrom	wikipedia-en:R*_rule_(ecology)?oldid=1021905006&ns=0
page length (characters) of wiki page	6730 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:R*_rule_(ecology)
is Link from a Wikipage to another Wikipage of	R* (disambiguation) Susan Kilham Plant strategies Break-even concentration Break even concentration R* rule Resource-ratio hypothesis Resource ratio hypothesis Tilman's R*
is Wikipage redirect of	Break-even concentration Break even concentration R* rule Resource-ratio hypothesis Resource ratio hypothesis Tilman's R*
is Wikipage disambiguates of	R* (disambiguation)
is foaf:primaryTopic of	wikipedia-en:R*_rule_(ecology)

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