BIO 1130 Lecture Notes - Bay Mud, Limnetic Zone, Convergent Evolution

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: All

Document Summary

Climatic cold = less biodiversity: temperature , water availability , wind , light . Churn water, keep planet at constant t more c = higher t. Non-climactic: salts , ph minerals, allow for biochemical rxns. 7 - 7. 5 to maintain life change b/w wet/dry environments, modify continents. Better adapted = more likely to survive / reproduce. No photosynthesis occurs b/c < 1% light penetrates. Inhabitants must be able to live in complete darkness. Anglerfish, giant squid horizontal oceanic zone, freshwater: horizontal limnetic zone. Benthic zone horizontal oceanic zone, freshwater: horizontal limnetic + littoral. Ecological region @ lowest level of aquatic environments. Layer lining body of water, includes: sand bottoms, rock outcrops, corals and bay mud. Variation of life forms w/i one ecosystem or entire earth. Measures health of system, indicates threat of extinction. Total mass of living matter in one area at one time (mass / unit area) or total mass in community.