BIOL 1001 Study Guide - Final Guide: Northern Hemisphere, Sockeye Salmon, Population Ecology
Document Summary
Ecology is study of how organisms interact with each other and their environment. Goal of ecology is to understand distribution and abundance of organisms. The four main levels of ecology are: At the organismal level, researchers explore the morphological, physiological, and behavioural adaptations that allow individuals to live in particular area. Sockeye salmon spend five years feeding and growing in ocean, these salmon travel hundreds or thousands of kilometres to return to stream where they hatched. Female create nests in the gravel stream bottom and lay eggs. Nearby males compete for chance to fertilize eggs as they are laid. A population is a group of individuals that live in same species that lives in same area at the same time. In population ecology, the focus is on how the number of individuals in population change over time. Researchers use mathematical models to predict the future of salmon populations.
