BIOL 121 Lecture Notes - Lecture 5: Kelp Forest, Seaweed, Character Displacement

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giraffes

27 May 2022

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BIOL 121 Full Course Notes

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Predators can positively affect biodiversity of community 4 . Consumption ( + ex . agawam abundance of different plant species increases. Beaver and bison pop. increases carrion : dead animal effect on carrion availability for scavengers in late spring i march + April ) ex . predators have a positive effect on community structure sea otters - almost went extinct due to hunting (cid:8869) prey on marine invertebrates including sea urchin. Feed on kelp ( macroalgae ) kelp forests : important habitat for fishes. Important in uptaking carbon in absence of sea otters , sea urchins turned kelp forest into barrens reintroduction of sea otters - predation on sea urchins increased. Vbc research article : benefits of a healthy kelp forest ecosystem tourism outweigh the costs ( decline in geodvck , sea urchin , and clam fisheries ) , carbon capture , fin fisheries: competition 1- , Use common resources that are in limited supply niches overlap.

Related Questions

When an invasive species alter the community structure it is introduced to, what can the consequence be?

a. extinction of economically important species

b. reduced predation on some native species

c. increased predation on some native species

d. all of the above

whiteduck795

keystone predators maintain species diversity in a communityby
a. competitively excluding other predators
b. preying on the community's dominant species
c. allowing immigration of other predators
d. reducing the number of disruptions in the community
e. coevolving with their prey

jadegrasshopper877

Community A and Community B are pools in a stream in which weare studying zooplankton (plankton that feed on photosyntheticplankton or phytoplankton) and the predator species that feed onthese zooplankton. We observe that the number of predator species,as a proportion of all zooplankton and predator species, is higherin Community A.

10) Based on this observation, which community would you predictto have higher species diversity of zooplankton and theirpredators? a. Community A b. Community B

11) The mechanism responsible for the higher species diversityyou predicted in Question 10 would be:

a. higher predation pressure would reduce the number of preyspecies or zooplankton because of increased mortality and localloss of prey species

b. lower predation pressure would increase the number of preyspecies or zooplankton through reduced mortality and greatersurvival of prey species

c. higher predation pressure would increase the number of preyspecies or zooplankton through lower competition among zooplanktonspecies

emeraldlouse604

BIOL 121 Lecture Notes - Lecture 5: Kelp Forest, Seaweed, Character Displacement

BIOL 121 Full Course Notes

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