25-26 2.02 island biogeogra\npart 1: pre - activity questions: answer in complete sentences. use\n1…

25-26 2.02 island biogeogra\npart 1: pre - activity questions: answer in complete sentences. use\n1. describe how biodiversity would be different between a faraway small island and a nearby large island. (need help?)\n2. explain why it is claimed that species on islands may have a lower ecological tolerance compared to those on the mainland. (need help?)

25-26 2.02 island biogeogra\npart 1: pre - activity questions: answer in complete sentences. use\n1. describe how biodiversity would be different between a faraway small island and a nearby large island. (need help?)\n2. explain why it is claimed that species on islands may have a lower ecological tolerance compared to those on the mainland. (need help?)

Answer

Brief Explanations:

  1. A nearby large island is more accessible to colonizing species due to its proximity to the mainland and larger size, which can support more habitats and resources, leading to higher biodiversity. In contrast, a far - away small island has limited access for new species to colonize and has fewer resources and habitats, resulting in lower biodiversity.
  2. Island species often evolve in isolation with limited resources and stable, narrow environmental conditions. They have adapted to these specific conditions and may lack the genetic diversity and flexibility to tolerate a wide range of ecological changes compared to mainland species, which are exposed to more variable and diverse environments.

Answer:

  1. Biodiversity on a nearby large island is likely to be higher than on a far - away small island. The nearby large island has greater accessibility for species to colonize from the mainland and more resources and habitats due to its size. The far - away small island has limited access for new species and fewer resources and habitats.
  2. Island species may have lower ecological tolerance because they evolve in isolation with limited resources and stable, specific environmental conditions. They lack the genetic diversity and adaptability to tolerate a wide range of ecological changes compared to mainland species.