ENVS 200 |144 Final Exam Questions And Answers| Download to score A +

metapopulation - ️️a population consisting of a collection of subpopulations, each one of which has a realistic chance both of going extinct and of appearing again through recolonization. habitat patches - ️️Areas of suitable habitat for a species that are separated by areas of unsuitable habitat. disturbance - ️️Event that opens up a Gap Gap - ️️patches within which many species suffer local extinction simultaneously. (In forests, high winds, elephants, or simply the death of a tree through old age) founder-controlled communities - ️️community where species are approximately equivalent in their ability to invade gaps and can hold the gaps against all comers during their lifetime. On each occasion that a population goes locally extinct a gap is opened up for invasion. Priority Effect - ️️effect between competing species in which the species that arrives first at a site is able to hold it against competing invades, whatever the outcome would be if they competed as simultaneously arriving equals. dominance-controlled communities - ️️communities where some species are competitively superior to others and an initial colonizer of a patch cannot necessarily maintain its presence there. community successions - ️️disturbances that open up gaps lead to reasonable predictable sequences of species, because different species have different strategies for exploiting resources - early species are good colonizers and fast growers, whereas later species can tolerate lower resource levels and grow to maturity in the presence of early species, eventually out-competing them.