Marine Biology: An Ecological Approach
Appropriate for undergraduate majors and graduate students in marine biology and marine ecology, Marine Biology: An Ecological Approach emphasizes the ecological principles that govern marine life throughout all environments within the world's oceans. Its unique ecological approach adds real-world relevance by exploring how organisms interact within their individual ecosystems. The text is organized by habitat and each habitat receives detailed, in-depth coverage, giving instructors flexibility to focus on their particular areas of interest. The Fifth Edition is fully updated with the latest research data and topics, including expanded coverage of the human impact on oceans, oceanic dead zones, and coral reefs. In addition to Nybakken's engaging writing style, the text now offers enhanced pedagogy with new end-of-chapter summaries, a new four-color design to complement the art program, an art CD-ROM for instructors, and a text specific Companion Web site.
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Composition and Distribution Seagrasses worldwide encompass only about 50
species, according to den Hartog (1977), a small number in comparison with their
ecological importance. Seagrass beds form dense carpets of as many as 4,000 ...
Structure and Biological Interactions Most seagrass beds generally have only
one or at most a few dominant species of seagrasses. Communities in which two
or more grasses are present have been little studied and may potentially be ...
Seagrass beds generally have only one or at most a few dominant species of
grasses. • Seagrass beds are complex systems with a narrow vertical three-
dimensionality and complexity and contain large numbers of epiphytic and
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H A P T E R
SOME ECOLOGICAL PRINCIPLES
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