APES Vocabulary 7 Flashcards

4946917869	Primary succession	Development in a lifeless area occurs in an area that has not previously been inhabited or in which the soil profile is completely destroyed (ex. bare rock surfaces from recent volcanic lava flows, rock faces that have been scraped clean by glaciers, or a city street)	0
4946943945	Secondary succession	The series of changes that occur in an area where the ecosystem has been disturbed, but where soil and organisms still exist	1
4946943946	Mutualism	A symbiotic relationship between two species in which both species benefit and both species participate	2
4946943947	Commensalism	A relationship between two organisms of different species where one benefits and the other is neither harmed nor benefited	3
4946943948	Parasitism	A relationship between two species in which one species, the parasite, benefits from the other species, the host, which is harmed	4
4946952329	Keystone species	Not necessarily abundant, but exert a strong control on community structure due to a pivotal ecological role. Examples: sea otters, sea stars, grizzly bears, prairie dogs	5
4946954795	Indicator species	Species that serve as early warnings that a community or ecosystem is being degraded.	6
4946961300	Characteristics of endangered species	Extremely small range, requiring large territories, living on islands, low reproductive success, specialized breeding areas, and specialized feeding habitats	7
4946963117	Endangered species	Species that is in danger of extinction throughout all or a significant portion of its range. Examples: Northern spotted owl ( loss of old growth forest), bald eagle (DDT pollution causes thinning of eggs), Piping plover (nesting areas threatened by development	8
4946968813	Invasive species	An introduced species that spreads out and often has harmful ecological effects on other species or ecosystems.	9