emery_lecture_22

emery_lecture_22 - Lecture22...

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Lecture 22 1. Predations and community structure - community structure: the patterns of species abundance and population interactions  within a  community - types of species present - relative abundance of species - vegetation characteristics - trophic relationships among the interacting population - ex: community is structured so species that can survive fire dominates Food web: various ways energy passes through populations in communities - diagram of who eats who Food chain – represent the passage of energy from a primary producer through a series  of  consumers at higher trophic levels  piece of a food chain Connectedness web: - feeding relationships - portrayed as links - only descriptive Energy flow webs: - ecosystem viewpoint indirect interaction of  primary - energy flux        primary on tertiary interaction Functional food webs: - functional relationships most important to community structure - magnitude or strengths of interactions
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This note was uploaded on 04/11/2011 for the course BIO 585 taught by Professor R.howard during the Winter '08 term at Purdue University.

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emery_lecture_22 - Lecture22...

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