Lecture 1-sept13.docx

Lecture 1-sept13.docx - Bio2483 Lecture 1 Tues Sept 13th...

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Bio2483: Lecture 1 - Tues Sept 13 th Ecology 1) the scientific study of interactions between organisms and their environment 2) the scientific study of interactions that determine the distribution (geographic location) and abundance of organisms other meanings in public usage differs from environmental activism and environmental science (solutions to environmental problem redundancies in ecological systems – too similar general misconceptions: 1. balance of nature - return to original preferred state after disturbance 2. each species has a distinct role to play in maintaining that balance Ecological maxims (guiding principles): 1. Organisms interact and are interconnected 2. Everything goes somewhere 3. No population can increase in size forever 4. Finite energy and resources result in trade- offs 5. Organisms evolve 6. Communities & ecosystems change over time 7. Spatial scale matters Ecosystem: Community of organisms plus the physical environment. Biotic: living components Abiotic: physical components Landscapes: Areas with substantial differences, typically including multiple ecosystems. Biosphere : all ecosystems of the world; all living organisms on Earth plus the environments in which they live.
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