Bio-Ecology - Part 3 Flashcards
Symbiosis
relationships between different organisms in which they rely on each other in some way for survival
5 types of symbiosis
Predation Parasitism Mutualism Commensalism Competition
Predation
Predator consumes the prey
Ex. shark eats fish
Parasitism
Parasite lives in or on the host.
Host provides food for the parasite.
Parasite does not usually kill the host
Ex. tick, leeches, mosquitoes
Mutualism
Both organisms benefit from the relationship
Ex. Lichen
Commensalism
1 organism benefits and the other organism is not affected
Ex. birds and trees- nesting
Competition
Organisms compete for necessities of life
Ex. food, water
2 types of competition
Intraspecific and interspecific
Intraspecific
competition between organisms of the same species
Ex. Mating
Interspecific
competition between organisms of different species
Ex. mice- fox, coyotes, hawks
Habitat
Where an organism lives in an ecosystem
Niche
the way in which an organisms interacts with the ecosystem
Ex. humming bird includes being a herbivore and pollinator
Ecotone
boundary between different communities.
Size can vary from centimeters to kilometers
Stability
stability of an ecosystem relates to the number of different species in the area called the diversity.
Greater the diversity the more stable the ecosystem.
Succession
When the community of organisms change over time