LECTURE 6-1 Flashcards
Competition
Interaction between organisms/species in which both the organisms/species are harmed
Predation
Form of symbiotic relationship between 2 organisms of different species — one is a predator that captures and feds on the other organism that serves as prey
Predation is a mechanism of population control
Herbivory
Consumption of plants by animals
Predator prey interaction: herbivore and plant it eats
Parasitism
Relationship bw 2 species of plants/animals in which one benefits at the expense of the other
Ex: tapeworms attaching themselves to insides of animals
Mutualism
Relationship b/w 2 organisms in which both benefit
Ex: oxpeckers living on zebra/rhino sustaining itself by eating all of the bugs and parasites on the animal
Commensalism
Association b/w 2 organisms in which one benefits and the other neither benefits or harms
Ex: orchids growing on tree branch
Food chain
Hierarchical series of organisms each dependent on the next as a food source
Dominant species
Plant, animal or function group of different species most commonly/conspicuously found in a particular ecosystem
Ex: humans
Foundation species
Provide foundation of a habitat
Ex: Kelp
Trophic efficiency
Efficiency which energy is transferred from one tropic level to the next
Competitive exclusion principle
2 species competing for the same limiting resource cannot coexist at constant population values
Ecological niche
Match of a species to a specific environmental condition
Resource partitioning
When species divide a niche to avoid competition for resources
Predator prey co evolution
Predator and prey evolve together — prey is part of predators environment and predator dies if it does not get enough food; vice versa
Camouflage, smell, sight
Parasite
An organism that lives in/on an granite of another species (host) + benefits by deriving nutrients at the others expense
Ex: mosquitoes
