Option C: Species and communities
• The distribution of species is affected by limiting factors.
• Community structure can be strongly affected by keystone species.
• Each species plays a unique role within a community because of the unique combination of its spatial habitat and interactions with other species.
• Interactions between species in a community can be classified according to their effect.
• Two species cannot survive indefinitely in the same habitat if their niches are identical
Application: Local examples to illustrate the range of ways in which species can interact within a community.
Skill: Use of a transect to correlate the distribution of plant or animal species with an abiotic variable.
Watch the video below to understand how elephant populations are estimated by transect lines. Do the click and learn to learn about elephant populations and how to use transect methods to estimate how many are left.