LS1_LECTURE_21

Community ecology a biological community consists of

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Unformatted text preview: over time. Community Ecology !  A biological community consists of the species that interact with one another within a particular area. !  Community ecologists study the nature and consequences of the interactions between species (e.g. predation, parasitism, and competition) and the consequences of those interactions (e.g. exploring how groups of species respond to disturbances such as fires & floods). Ecosystem Ecology !  An ecosystem consists of all the organisms in a particular region, along with nonliving, or abiotic, components. !  Ecosystem ecologists study how nutrients and energy move among and between organisms and the surrounding atmosphere and soil or water. phosphorous, nitrogen, carbon dioxide, etc. !  Because humans are affecting energy flows and climate, this work has direct public policy implications. at that ecosystem level, it still depends on where you are in the world Types of Terrestrial Ecosystems !  Biomes are major groupings of plant and animal communitiesthat occur throughout the world defined by a dominant vegetation type. !  Each biome is associated with a distinctive set of abiotic conditions. !  The type of biome present in a terrestrial region depends on climate—the prevailing, long-term weat...
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This note was uploaded on 12/04/2013 for the course LIFE SCIEN 1 taught by Professor Lloyd-smith during the Winter '11 term at UCLA.

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