期刊
LIMNOLOGY AND OCEANOGRAPHY LETTERS
卷 7, 期 1, 页码 1-10出版社
WILEY
DOI: 10.1002/lol2.10220
关键词
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资金
- National Science Foundation [2015825, 1451919]
- Rhode Island Sea Grant
- National Institute of Environmental Health Sciences of the National Institutes of Health [1P01ES028942]
- Direct For Biological Sciences
- Division Of Environmental Biology [2015825] Funding Source: National Science Foundation
- Direct For Biological Sciences
- Division Of Environmental Biology [1451919] Funding Source: National Science Foundation
Nitrogen fixation is a crucial element of the global nitrogen cycle, but its rates and ecological dynamics in inland and coastal aquatic ecosystems are still largely unknown. This is due to the diversity of these habitats and the traditional belief that nitrogen fixation rates in these ecosystems are low or non-existent.
N-2 fixation is a major component of the global N cycle and has been extensively studied in open-ocean and terrestrial ecosystems. Yet rates and ecological dynamics remain virtually unknown for the inland and coastal aquatic ecosystems (lakes, wetlands, rivers, streams, and estuaries) that connect terrestrial and marine biomes. This is due to the diversity of these habitats as well as the traditional paradigm that N-2 fixation rates were low to nonexistent, and therefore not important, in these ecosystems. We identify three major research themes to advance understanding of aquatic N-2 fixation: (1) the biological diversity of diazotrophs and variability of N-2 fixation rates, (2) the ecological stoichiometry of N-2 fixation, and (3) the upscaling of N-2 fixation rates from genes to ecosystems. Coordinating research across these areas will advance limnology and oceanography by fully integrating N-2 fixation into ecological dynamics of aquatic ecosystems from local to global scales.
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