Biology 2483A Chapter Notes -Pacific Ocean, Harvest Records
26 Nov 2013
School
Department
Course
Professor
Document Summary
Climate is the most fundamental component of the physical environment. Winds and ocean currents result from differences in solar radiation across earth"s surface. Large-scale atmospheric and oceanic circulation patterns establish global patterns of temperature and precipitation. Regional climates reflect the influence of the distribution of oceans and continents, mountains, and vegetation. Seasonal and long-term climatic variation are associated with changes in earths position. Salinity, acidity, and oxygen concentrations are major determinants of the chemical relative to the sun. Grizzly bears feed on salmon migrating upstream to reproduce. Potential causes of salmon declines in the north pacific ocean: environment: dam construction, sediment from logging operations, water pollution, overharvesting. A) sockeye salmon and b) pink salmon in alaska over 65 years show abrupt drops and increase in production: red lines indicate annual catch, purple lines are a statistical fit for data. Mantua et al. (1997): periods of high salmon production in alaska corresponded with periods of low production in oregon and.
