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0°ÇÀÇ Èı⺸±â°æÀï(Competition)ÀÇ À¯Çü¿¡ ´ëÇØ ±â¼úÇÑ ¸®Æ÷Æ® Âü°íÀÚ·áÀÔ´Ï´Ù.
°æÀï (competition)
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°ø±ÞÀÌ ºÎÁ·ÇÏÁö ¾Ê´Â ÀÚ¿ø(»ê¼Ò µî)¿¡ ´ëÇؼ´Â °æÀïÀÌ ÀϾÁö ¾Ê´Â´Ù
types of competition resource competition (ÀÚ¿ø °æÀï)
occurs when a number of organisms utilize common resources that are in short supply
interference competition (°£¼· °æÀï)
occurs when the organisms seeking a resource harm one another in the process, even if the resource is not in short supply
types of competition scramble competition (ºÒ¿ÏÀü °æÀï) all individuals are equally affected there are no ¡°winners¡± or ¡°losers¡± contest competition (¿ÏÀü°æÀï)
some individuals acquire resources at the expense of other individuals
there are ¡°winners¡± and ¡°losers¡± types of competition intra-specific competition (Á¾³» °æÀï) between members of the same species inters-specific competition (Á¾°£ °æÀï) between two or more different species the kinds of resources for plants light, nutrients, water µî pollinators, space µî for animals water, foods, mate µî
spaces : nesting site, wintering site, resting site µî
theories on competition for resources lotka-volterra model
describe competition between organisms for food or space, are based on the logistic curve
species 1 dn1/dt r1n1((k1-n1)/k1) species 2 dn2/dt r2n2((k2-n2)/k2) lotka-volterra model
two competitors don¡¯t use the same amount of resource
¥án2 : equivalent number of species 1 individuals
¥ân1 : equivalent number of species 2 individuals
species 1 dn1/dt r1n1((k1-n1-¥án2)/k1) species 2 dn2/dt r2n2((k2-n2-¥ân1)/k2) 2 2 2 2 2 2 2 1 1 1 1 1 2 2 lotka-volterra model species 1 species 2 k1-n1-¥án2 0 if n1 0, n2 k1/¥á if n2 0, n1 k1 k2-n2-¥ân1 0 if n2 0, n1 k2/¥â if n1 0, n2 k2
species 1°ú species 2ÀÇ µî¹Ðµµ À¯Áö¼±(isocline)
lotka-volterra model
four possible outcomes of competition between two species
a d c b
competition in experimental laboratory population
competition between two species of yeast saccharomyces cervisiae schizosaccharomyces kephir growth limiting factor accumulation of alcohol change in the ph of the medium saccharomyces schizosaccharomyces k
13.00
5.80
r
0.22
0.06
competition between two species of yeast 1 volume schizosaccharomyces (ÀÌÇÏ »ý·«)
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0/5
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Æ÷ÀÎÆ® : ÀÚ·á 1°Ç´ç ÃÖ´ë 5,000P Áö±Þ
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