RNR 1001 Chapter : 9 6 2013
Document Summary
The ecological niche is composed of the fundamental and realized niches: generalist species have broad niches, specialist species have narrow niches, the niches of some organisms are critical to others-keystone species (pacific salmon, Sea otter, black-tailed prairie dog, ocher sea star, mountain lion) Important implications for biodiversity and species conservation: the niches of other organisms also make them critical to conservation efforts: Species have two types of genetic diversity: diversity within each population, and diversity among different populations, protecting genetic diversity within and among populations is an important conservation goal. Populations of different species live together in the community: all of the populations living together within a habitat- address , some species adapted to microhabitat-small scale physical conditions for particular populations; depends on species size and niche requirements. For example; two assemblages with 5 species each have the same richness, but 20, 15,
