
	Where results make sense

Topic: Competing species

Related Topics

Differential hardening

Clever, Missouri

The Restless Years

Barool National Park

List of hospitals in Toronto

In the News (Mon 21 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Competing species - Wikipedia, the free encyclopedia
		Competing species are species competing for the same resource(s) to live.
		They may or may not not directly attack each other, but can harm each other by depriving the other species of resources.
		This page was last modified 11:40, 11 September 2005.
	en.wikipedia.org /wiki/Competing_species (59 words)

	Lecture 19
		Species 1 responses to the numbers of species 1 and numbers of competing species 2 (after Begon, Harper and Townsend, 1996, p 275, Fig.
		Species 2 responses to the numbers of species 2 and numbers of competing species 1 (after Begon, Harper and Townsend, 1996, p 275, Fig.
		A stable equilibrium will occur when the inhibitory effect on species 1 by itself is greater than the inhibitory effect on species 2 by species 1, and the inhibitory effect on species 2 by itself is greater than the inhibitory effect on species 1 by species 2 [see graph (d), p 83].
	jan.ucc.nau.edu /~doetqp-p/courses/env470/Lectures/lec19/lec19.htm (454 words)

	Mathematics and Computer Education: Nyala and Bushbusk I: A competing species model
		Competing species models are mentioned in most beginning differential equations texts.
		For the basic competing species model, four general possibilities exist, each with its own ecological implications and each depending on the stability of the critical points of the model.
		According to these sources, the intrinsic growth rate of Nyala populations, in the absence of other species, is 17.4% and that of the Bushbuck is 12.2%; these growth rates are characteristic of species whose populations have not yet reached the maximum carrying capacity of their area [3].
	www.findarticles.com /p/articles/mi_qa3950/is_199910/ai_n8873458 (1523 words)

	Competing Memes Analysis
		Ecology’s Lotka-Volterra model of competing species illustrates the usefulness to memetics of population models.
		The number of dimensions in a competing memes analysis is a matter of researcher choice and depends on the state of knowledge in the subject at the time of the study.
		This model describes the population of species that compete within an ecosystem as depending on four parameters: the initial population, the maximum sustainable population, the growth rate, and the competitive strength.
	jom-emit.cfpm.org /2003/vol7/dirlam_dk.html (3539 words)

	FILE: <BC-71
		Populations competing for resources in patchy environments may be expected to show the same range of qualitative behaviors-- stable points approached either monotonically or by damped oscillations, periodic cyclic behavior and disarray, but the formulations representing them shed new light on the importance of dispersal, dispersion and competition within patches.
		Multiple age-class systems.--Many insect populations compete in both preimaginal and adult stages, perhaps by competing as adults for oviposition sites and subsequently as larvae for food (e.g., Fujii 1968) and in some cases the superior adult competitor may be inferior in larval competition (e.g., Fujii 1970).
		Many species of natural enemies, however, feed or reproduce on a variety of different hosts, and in such cases their population dynamics may be more independent of a particular host population.
	faculty.ucr.edu /~legneref/biotact/bc-71.htm (10273 words)

	competition.nb (Site not responding. Last check: 2007-10-29)
		In the presence of a second competing species, this equation can be modified by reducing the carrying capacity of the environment for species 1 as the numbers of species 2 increase:
		For the zero-growth line for species one, n1[t] decreases with time above the line and increases with time below the solid line; for the zero-growth line for species two, n2[t] decreases with time above the line and increases with time below the dashed line.
		Species 1 had outcompeted species 2, reaching the point circled in blue.
	www.bio.miami.edu /tom/bil358/competition.html (888 words)

	Evolution - Coevolution
		The competing species evolve to a set of optimal states and then stay there; the lag load reduces to zero, no species changes, and no species goes extinct.
		In practice, it would mean that biological coevolution would always take the species to a stable equilibrium, from which it could be perturbed by physical events; after a perturbation, it would evolve back to a stationary equilibrium again.
		On average, a group of competing species have balanced levels of adaptation, and they all lag behind their best possible states.
	www.blackwellpublishing.com /ridley/tutorials/Coevolution27.asp (363 words)

	Lecture 21
		If these two species are competing, we would predict that remove of one species would have a positive effect on the remaining species, and addition of more individuals of one species would have a negative effect on the other species.
		If these two species are competing, we would predict that as the density of the wild oats increases, the yield of flaxseed would decrease.
		However, the two species coexist where gap formation is 7% of rock surface area per year or greater.
	jan.ucc.nau.edu /doetqp/courses/env470/Lectures/lec21/lec21.htm (587 words)

	Biology120.Lectures28 (Site not responding. Last check: 2007-10-29)
		is defined as the set of species that inhabit a particular area, and the interactions among the component species determine the make-up and dynamics of that community over time.
		Competition may result in reduced growth or reproductive rates of one or both species, exclusion of one species from the area of overlap, or elimination of one species from the habitat entirely.
		He argued that this was because one species was more efficient in its use of the resource (that is, a better competitor).
	bioweb.wku.edu /Courses/Biol120/McElroy/120lects28.htm (790 words)

	Competition between Species
		Competition among ecologically similar species is the major factor that determines the structure of animal and plant communities.
		The main question is, can competing species coexist or not, and what are the major factors that affect coexistence.
		If competing species are ecologically identical (use the same resource), then inter-specific competition is equivalent to intra-specific competition.
	www.ento.vt.edu /~sharov/PopEcol/lec11/inter.html (654 words)

	Species Concepts and Phylogenetic Theory; A Debate; Edited by Quentin D. Wheeler and Rudolf Meier
		Debaters include (1) Ernst Mayr (Biological Species Concept), (2) Rudolf Meier and Rainer Willmann (Hennigian species concept), (3) Brent Mishler and Edward Theriot (one version of the Phylogenetic Species Concept), (4) Quentin Wheeler and Norman Platnick (a competing version of the Phylogenetic Species Concept), and (5) E. Wiley and Richard Mayden (the Evolutionary Species Concept).
		Each author or pair of authors contributes three essays to the debate: first, a position paper with an opening argument for their respective concept of species; second, a counterpoint view of the weakness of competing concepts; and, finally, a rebuttal of the attacks made by other authors.
		This unique and lively debate format makes the comparative advantages and disadvantages of competing species concepts clear and accessible in a single book for the first time, bringing to light numerous controversies in phylogenetic theory, taxonomy, and philosophy of science that are important to a wide audience.
	www.columbia.edu /cu/cup/catalog/data/023110/0231101422.HTM (749 words)

	Complexity Digest - Disease Induced Oscillations between Two Competing Species
		Disease Induced Oscillations between Two Competing Species, SIAM J. Appl.
		Excerpt: The interaction of disease and competition dynamics is investigated in a system of two competing species in which only one species is susceptible to disease.
		The model is kept as simple as possible, combining Lotka-Volterra competition between the species with disease dynamics of susceptible and infective individuals within one of the species.
	www.comdig.org /article.php?id_article=19731 (145 words)

	Project Proposal
		A famous theoretical tenet in ecology is “competitive exclusion”, the idea that two similar species cannot occupy the same niche at the same time.
		The primary goal of this research is to investigate the ways in which the tenet of competitive exclusion may be violated as a result of adding survivorship in model (1).
		The competitive exclusion principle, a longstanding concept in population biology, maintains that when two or more similar species are competing with each other for resources, they cannot coexist and one will eventually be driven to extinction (Edelstein-Keshet 1988).
	www.andrews.edu /~chantel/research/proposal.htm (1051 words)

	Disease Induced Oscillations between Two Competing Species
		The interaction of disease and competition dynamics is investigated in a system of two competing species in which only one species is susceptible to disease.
		The model is kept as simple as possible, combining Lotka--Volterra competition between the species with disease dynamics of susceptible and infective individuals within one of the species.
		By contrast, conditions are found under which, if the two species coexist in the absence of disease, then the introduction of disease does not induce oscillations, and the long-term dynamics are determined by the basic reproduction number.
	epubs.siam.org /sam-bin/dbq/article/60039 (256 words)

	Competing Species near a Degenerate Limit
		Competing Species near a Degenerate Limit: SIAM Journal on Mathematical Analysis Vol.
		We consider a competitive reaction-diffusion model of two species in a bounded domain which are identical in all aspects except for their birth rates, which differ by a function g.
		To be more precise, given a fixed diffusion rate and a particular spatially dependent utilization of resources which are expressed in terms of the birth rate, there always exists a birth rate, which on average is the same but differs pointwise, which allows the corresponding species to invade.
	epubs.siam.org /sam-bin/dbq/article/40218 (313 words)

	Complexity Digest - Stochastic Resonance And Noise Delayed Extinction In A Model Of Two Competing Species (Site not responding. Last check: 2007-10-29)
		Abstract: We study the role of the noise in the dynamics of two competing species.
		The interaction parameter between the species is a random process (...) the presence of a periodic driving term, which accounts for the environment temperature variation.
		We find also a nonmonotonic behavior of the mean extinction time of one of the two competing species as a function of the additive noise intensity.
	www.comdig.org /article.php?id_article=14399 (166 words)

	Competition: Chapter 13
		Compare population size of species between cultures with / without competing species.
		Compare population size of species between plots with / without competing species.
		Predators preferentially attack whichever species is most abundant (usually the competitively superior species).
	www.bsu.edu /web/mpyron/13.html (440 words)

	Organic Eprints - 3654: Simulation of Above-Ground Suppression of Competing Species and Competition Tolerance in Winter ...
		Olesen, Jørgen E. Hansen, Preben Klarskov; Berntsen, Jørgen and Christensen, Svend (2004) Simulation of Above-Ground Suppression of Competing Species and Competition Tolerance in Winter Wheat Varieties.
		Cereal crop species and varieties differ in competitive ability against weeds mainly as influenced by differences in canopy architecture.
		The FASSET crop model was used to separate the effects of a number of crop traits on the suppressive ability of winter wheat varieties and the ability to tolerate weeds.
	orgprints.org /3654 (551 words)

	A bioeconomic model of nonselective harvesting of two competing fish species (Site not responding. Last check: 2007-10-29)
		ANZIAM J. A bioeconomic model of nonselective harvesting of two competing fish species
		This paper deals with the combined bioeconomic harvesting of two competing fish species, each of which obeys the Gompertz law of growth.
		The catch-rate functions are chosen so as to reflect saturation effects with respect to stock abundance as well as harvesting effort.
	www.austms.org.au /Publ/ANZIAM/V46P2/2041.html (117 words)

	Find in a Library: A preliminary guide to the response of major species of competing vegetation to silvicultural ...
		Find in a Library: A preliminary guide to the response of major species of competing vegetation to silvicultural treatments
		A preliminary guide to the response of major species of competing vegetation to silvicultural treatments
		WorldCat is provided by OCLC Online Computer Library Center, Inc. on behalf of its member libraries.
	worldcatlibraries.org /wcpa/ow/31d51097fbebef91a19afeb4da09e526.html (102 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		Energy Citations Database (ECD) Document #6455670 - Analysis of compensatory Leslie matrix models for competing species
		Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link.
		Analysis of compensatory Leslie matrix models for competing species
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=6455670 (93 words)

	A Preliminary Guide to the Response of Major Species of Competing Vegetation to Silvicultural Treatments
		Good vegetation management requires a basic understanding of the ecological characteristics of individual competitors and how they respond to silvicultural treatments.
		This report documents what is currently known about the response of major species of competing vegetation in British Columbia to various silvicultural treatments now in use.
		The information has been gathered from a variety of published and unpublished sources, and through conversations with researchers and practitioners in vegetation management in related fields.
	www.for.gov.bc.ca /hfd/pubs/Docs/Lmh/Lmh09.htm (120 words)

Try your search on: Qwika (all wikis)