Example Environment ENVIR 101 002
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ENVIR 101 002
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This 1 page Class Notes was uploaded by Lauren Vagnoni on Monday January 25, 2016. The Class Notes belongs to ENVIR 101 002 at University of South Carolina taught by Daniel Taylor Brantley (P) in Summer 2015. Since its upload, it has received 39 views. For similar materials see Intro to Environment in Art at University of South Carolina.
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Date Created: 01/25/16
Environment Chapter 4 Species Interactions and Community Ecology Lecture Resource partitioning Competing species coexist by specializing They use different resources small vs large seeds 0 Share resources one species may be active during the day and the other at night Exploitation One member bene ts while the other is harmed 0 Examples predation parasitism herbivory Predation Process by which individuals of one species capture kill and consume individuals of another species Predation affects the community Interactions between predators and prey structure food webs The number of predators and prey in uences community composition Predators can themselves become prey o Zebra mussels eat smaller types of zooplankton Parasitism A relationship in which one organism parasite depends on another host for nourishment or some other bene t 0 The parasite harms but doesn t kill the host 0 Parasitoidsinsects that parasitize other insects and kill the host 0 Pathogens parasites that cause disease in hosts 0 Coevolution hosts and parasites become locked in a duel of escalating adaptations Herbivory Animals feed on tissues of plants Widely seen in insects It may not kill the plant but affects its growth and reproduction Defenses include 0 Chemicals toxic or distasteful o Thorns spines or irritating hairs Herbivores may overcome these defenses Two or more species bene t from their interactions 0 Each partner provides a service Symbiosis A relationship in which the organisms live in a close physical contact mutualism and parasitism Pollination Bees bats birds transfer pollen from one ower to another fertilizing its eggs
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