Ch. 6 - Study Guide - Chapter 6 Study Guide Chapter 6 Coral...

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Study Guide - Chapter 6 Study Guide – Chapter 6 Coral reefs are some of the most ecologically important aquatic ecosystems on the planet. As I mentioned in class, coral polyps and zooxanthellae have a symbiotic relationship, and together they create the complex habitats that are home to so many invertebrates and fishes. They provide ecosystem services related to CO 2 fixation, coastal protection, and fisheries production, but it is the incredible biodiversity, and its loss through pollution, warming (coral bleaching), and disease that is of such great concern to conservationists (see Figure 6-12, and the discussion on pages 133-134). Aquatic life zones can be divided by salinity, flow, temperature, and depth, and all of the continents (except Antarctica) have numerous lakes, ponds, rivers, and nearshore marine habitats that provide a tremendous diversity of resources, including food, minerals, oil, transportation, recreation, and ecosystem services in the form of CO 2 fixation and biogeochemical cycling. We have looked at aquatic food webs in class, most are based on phytoplankton and zooplankton , which are consumed by a wide variety of swimming organisms called nekton , and substrate-dwelling organisms called benthos , and of course, never forget the decomposers, we have stressed their importance in food webs. The book also talks about ultraplankton , small bacteria in the ocean that contribute
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Ch. 6 - Study Guide - Chapter 6 Study Guide Chapter 6 Coral...

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