ENGL121 Lecture Notes - Lecture 14: Metapopulation, Phenology, Habitat Destruction
3 Feb 2016
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Hand in next week: drawing and concept map* Process of nutrient enrichment of aquatic systems and the ecosystem and ecological responses that occur. Process is natural but humans also play a huge role (fertilizers-full in nitrogen). Changes are being made to agricultural practices to reduce nutrient run off. Activity week 1: set up a lab based experiment to investigate the effect of terrestrial nutrient enrichment on components of an aquatic microcosm. Metapopulation: group of subpopulations living on separate patches connected by exchanges of individuals among patches. The connection is not necessarily physical, but a way in which organisms of one patch can travel to meet organisms of another patch. Sometimes it"s the result of a large population that has become fragmented: habitat destruction. If there can"t be movement between subpopulations then you just have a population, not a metapopulation. *metapopulations occur when there"s a suitable habitat in discrete patches occupied by local populations.
