Exam 2 examples Flashcards
what do beavers do as allogenic engineers
Use sticks and mud to build dams on small-order streams
Create small reservoirs and wetlands by flooding patches of the landscape
Beaver ponds and wetlands are used by numerous species
Preferential use of certain tree species for sticks alters the plant communities near beaver ponds
Dam failure results in aquatic to terrestrial succession
how are insects and pathogens allogenic engineers
The death of one tree “invites’ a population of insects to colonize, and then once the population grows they spread to adjacent trees and kill them
Create patches of disturbance that kill mature forest and it reverts back to earlier stages of succession
how are buffaloes allogenic engineers
Migration and grazing activities controlled large scale corridor plant patterns by promoting low seral stage successional grasslands
Dust bathing and wallowing created shallow circular pits across landscape
Migration and movement disperses zoochores and influences nutrient recycling
How are coral autogenic engineers
Provide habitat and food to numerous marine species
where is most coral located
between the tropics, 30N-30S
how are trees autogenic engineers
The structure of some canopy trees (living and dead) provides habitat and nesting locations for birds, insects, and mammals
Presence of trees increases biodiversity because of the other organisms adapted to use them – specifically those that live in the canopy – monkeys, lemurs, koalas, squirrels, epiphytes
Dead trees are abundance of food for detritivores and decomposers and are used by numerous other organisms for habitat
woodpeckers are —- engineers, using —- engineer structures
allogenic
tree autogenic
aquatic to terrestrial resource subsidy
salmon migrate upstream where they are predated by terrestrial animals
Mayflies hatch from the water and spread across the landscape
permanent cave dwellers
troglobites
facultative cave dwellers
Trogloxenes
