This unique addition to reference literature provides an introduction to the major concepts and contemporary issues that are essential for students of environmental science and environmental studies to know. With over 200 entries authored by world-class names like Anthony Brazel, John Day and Edward Keller, this text is divided into six sections: Environmental Science, Environments, Paradigms & Concepts, Processes & Dynamics, Scales & Techniques, and Environmental Issues.  

Estuarine-Dependent or -Related Species

Estuarine-dependent or -related species

In defining estuarine-dependent or -related species, Chesney and his co-workers. used the distribution and abundance of a species or life-history stage over environmental gradients to define its habitat. Taking this view, a species may be characterized as estuarine-dependent if a life history stage requires some combination of environmental conditions typically found in estuaries. Environmental conditions that control recruitment success for a species may vary across its range, so a species may be dependent on estuaries (low salinity shallows, high productivity, rich in prey) throughout most of its range but rely heavily on sea-grass covered coastal sand flats (low salinity shallows, rich in prey) in another location. As the identification of nursery habitat types should require at least a ...

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