Nitrogen fixation in freshwater, estuarine, and marine ecosystems. 1. Rates and importance1
نویسندگان
چکیده
منابع مشابه
Aquatic Conservation: Marine and Freshwater Ecosystems
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Millennial perspectives, like the one prompted by this Special Issue of Aquatic Conser6ation, are challenging. If we look back, we realize the degree of change in culture, technology, science and environmental quality that can occur over such time scales. Consider, for example, that by the turn of the last millennium, our global population was somewhere between 200 and 500 million (Ehrlich et a...
متن کاملAquatic Conservation: Marine and Freshwater Ecosystems
1. Fishing spans all oceans and the impact on ocean predators such as sharks and rays is largely unknown. A lack of data and complicated jurisdictional issues present particular challenges for assessing and conserving high seas biodiversity. It is clear, however, that pelagic sharks and rays of the open ocean are subject to high and often unrestricted levels of mortality from bycatch and target...
متن کاملEutrophication of freshwater and marine ecosystems
Initial understanding of the links between nutrients and aquatic productivity originated in Europe in the early 1900s, and our knowledge base has expanded greatly during the past 40 yr. This explosion of eutrophication-related research has made it unequivocally clear that a comprehensive strategy to prevent excessive amounts of nitrogen and phosphorus from entering our waterways is needed to pr...
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ژورنال
عنوان ژورنال: Limnology and Oceanography
سال: 1988
ISSN: 0024-3590
DOI: 10.4319/lo.1988.33.4part2.0669