BSC 385 Lecture Notes - Lecture 9: Hypolimnion, Epilimnion, Calcium Carbonate

• School: University of Alabama
• Department: Biological Sciences
• Course: BSC 385
• Professor: Jonathan Benstead

Document Summary

Bsc 385-9 (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Rivers are sixth-order or higher: amazon is 12th order. The sources of energy derived from photosynthesis w/in the aquatic system. Nutrients and organic materials from the terrestrial system. Gradient of physical factors along the river continuum. Low-order streams usually have a higher oxygen concentration, lower temperature, more shading and higher inputs of terrestrial organic matter (cid:1) Near the headwaters, most energy is provided by allochthonous sources. Fine particulate organic matter is formed by breakdown of cpom (cid:1) Further downstream, the main energy sources are fpom from upstream and autochthonous production by algae. Lakes and ponds contain zones defined by depth and light penetration. C) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) The physical characteristics of lakes are determined by size and depth. Deep lakes develop vertical temperature gradient in the summer.