GEOG 203 Lecture Notes - Lecture 6: Microbiota, Limiting Factor, Bouctouche

• School: McGill University
• Department: Geography
• Course: GEOG 203
• Professor: Tim Moore

Document Summary

Lecture 6: coastal (&cultural) eutrophication and case studies. Major component of the phytoplankton in seas and lakes. Float in the upper water layers and get nutrient from water. In clear waters some live at the bottom, on the mud surface, these get their nutrients from the mud. There is a diato(cid:373) (cid:862)(cid:271)loo(cid:373)(cid:863) i(cid:374) the spri(cid:374)g (cid:449)he(cid:374) (cid:374)utrie(cid:374)ts are abundant. As diatoms remove the nutrients, n becomes limiting. Because dinoflagellates are more mobile and better at getting scarce nutrients they largely replace diatoms as the phytoplankton later in the season. Occurs when limiting nutrients are supplied to an aquatic system. A (cid:858)li(cid:373)iti(cid:374)g(cid:859) (cid:374)utrie(cid:374)t is the essential plant nutrient in shortest supply relative to the needs of algae and plants- thus adding it increases the rate of primary production. Nutrients become available as terrestrial succession proceeds in the surrounding landscape. Oxygen depletion occurs in the sediments and bottom waters.