ecology_notes_-_a_mini-course

Ecology_notes_a_mi - Ecology The Essentials A Mini-Course I Lifeonearthisli ,whichextendsabout8 kilo m a The msandbetweenorganis msandtheir environ

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Ecology – The Essentials, A Mini-Course I. Life on earth is limited to a very narrow zone called the Biosphere, which extends about 8   kilometers above and below the earth’s surface a. The study of the relationships between organisms and between organisms and their   environment is called  Ecology a.i. Ecosystem  – made up of organisms and their non-living  environment interacting as a system b. Community  – all the organisms living together in a certain area (plants,  animals, fungi, bacteria, and so on) c. Population  – all me mbers of a particular species in a com munity  c.i. Co mpetition between the me mbers of a population keeps the  population from becoming too large for an ecosystem c.ii. To describe a com munity we need to know the kind and  size of the  populations present c.iii. Co m munities are usually described by the dominant populations  present (those species with the largest number of me mbers) c.iv. Habitat  – the special place in an ecosystem with its particular  characteristics where a population exists c.v. Niche – the special role a species fills in an ecosystem, and no two  species can occupy the exact same niche at the same time d. Relationships in ecosystems – how species (populations) interact within a  com munity d.i. Predator-prey relationships  – a predator kills the prey for food d.ii. Mutualism  – two organisms live together and both me mbers 
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This note was uploaded on 01/04/2012 for the course BSC BSC1005 taught by Professor Orlando,rebecca during the Fall '10 term at Broward College.

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Ecology_notes_a_mi - Ecology The Essentials A Mini-Course I Lifeonearthisli ,whichextendsabout8 kilo m a The msandbetweenorganis msandtheir environ

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