Exam 8: Community Ecology

STAGE -Which letter in the diagram corresponds to the start of secondary ecological succession?

Which species category do wild African bees belong to? 

Which term refers to a species that migrates to,or is accidentally introduced into,an ecosystem? 

Predation and parasitism are examples of antagonistic ecological interactions in which one species takes advantage of another species.

Which process is likely guiding primary succession in an ecosystem where,over a period of years,bare rock was colonized by lichens that gave way to moss that in turn gave way to ferns? 

The pioneer community of ecological succession is usually composed of only alien species.

WARBLERS -According to the above diagram,how is food competition reduced?

What is among the immediate effects of a natural disturbance? 

Which term refers to the win-win relationship of animal behaviour? 

"Better safe than sorry" and "look before you leap" are common-sense aphorisms that describe ________________________________________.

_______________ species are plants and animals that aggressively expand into natural communities where their abundance disturbs the natural balance of ecosystem structure,evolution,and function.

A keystone species is always a good indicator species.

What is associated with the term "richness"? 

Sharks rarely kill more than seven people per year.

____________________ occurs because greater biodiversity increases the likelihood of compatible associations,which are fostered due to improved efficiency.

Resource partitioning is one solution to decreasing the intensity of competition among species.

Which condition is likely to result in communities having the greatest diversity of species,according to the intermediate disturbance hypothesis? 

The facilitator of succession-or the cause of ecosystem change-is the impact that established species have on their own environments.

Oxpeckers feed on and remove parasitic ticks that infect animals such as rhinoceros.This is an example of ____________________.

STAGE -Which letter in the diagram corresponds to the stage in which the land can support trees,shrubs,weeds,and grasses?