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Article: Nitrogen dynamics on Guam as revealed by the seagrass Enhalus acoroides
Title | Nitrogen dynamics on Guam as revealed by the seagrass Enhalus acoroides |
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Authors | |
Keywords | Seagrasses Tropical Indo-Pacific Stable isotope analysis Eutrophication |
Issue Date | 2015 |
Publisher | Inter-Research. The Journal's web site is located at http://www.int-res.com/journals/meps/index.html |
Citation | Marine Ecology Progress Series, 2015 How to Cite? |
Abstract | Seagrasses are critical to productive coastal ecosystems but are endangered and poorly studied, especially in the tropical Indo-Pacific. A key local threat is the increasing anthropogenic input of nitrogen (N). We hypothesized that such N eutrophication is occurring on Guam, the largest and most populated of the Northern Mariana Islands. We examined the seagrass Enhalus acoroides over 5 years and applied stable isotope analysis to document N dynamics and impacts. Although δ15N values indicated that sewage-derived N was the dominant source, the δ15N values were unrelated to either seagrass cover or growth rate. Strong relationships between seagrass δ15N values and both distance to the nearest source of N inputs and population density of adjacent municipalities suggest that N inputs are highly localized. Although there was no evidence of a negative impact of sewage-derived N inputs on seagrasses, this study provides a useful reference for evaluating mitigation efforts and for tracking the effect of increasing anthropogenic eutrophication on Guam. |
Persistent Identifier | http://hdl.handle.net/10722/208751 |
ISSN | 2023 Impact Factor: 2.2 2023 SCImago Journal Rankings: 0.802 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Pinkerton, K | - |
dc.contributor.author | Baker, DM | - |
dc.contributor.author | Cuddy, MR | - |
dc.contributor.author | Raymundo, LJ | - |
dc.contributor.author | Meyer, KA | - |
dc.contributor.author | Kim, K | - |
dc.date.accessioned | 2015-03-18T09:09:58Z | - |
dc.date.available | 2015-03-18T09:09:58Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Marine Ecology Progress Series, 2015 | - |
dc.identifier.issn | 0171-8630 | - |
dc.identifier.uri | http://hdl.handle.net/10722/208751 | - |
dc.description.abstract | Seagrasses are critical to productive coastal ecosystems but are endangered and poorly studied, especially in the tropical Indo-Pacific. A key local threat is the increasing anthropogenic input of nitrogen (N). We hypothesized that such N eutrophication is occurring on Guam, the largest and most populated of the Northern Mariana Islands. We examined the seagrass Enhalus acoroides over 5 years and applied stable isotope analysis to document N dynamics and impacts. Although δ15N values indicated that sewage-derived N was the dominant source, the δ15N values were unrelated to either seagrass cover or growth rate. Strong relationships between seagrass δ15N values and both distance to the nearest source of N inputs and population density of adjacent municipalities suggest that N inputs are highly localized. Although there was no evidence of a negative impact of sewage-derived N inputs on seagrasses, this study provides a useful reference for evaluating mitigation efforts and for tracking the effect of increasing anthropogenic eutrophication on Guam. | - |
dc.language | eng | - |
dc.publisher | Inter-Research. The Journal's web site is located at http://www.int-res.com/journals/meps/index.html | - |
dc.relation.ispartof | Marine Ecology Progress Series | - |
dc.rights | Marine Ecology Progress Series. Copyright © Inter-Research. | - |
dc.subject | Seagrasses | - |
dc.subject | Tropical Indo-Pacific | - |
dc.subject | Stable isotope analysis | - |
dc.subject | Eutrophication | - |
dc.title | Nitrogen dynamics on Guam as revealed by the seagrass Enhalus acoroides | - |
dc.type | Article | - |
dc.identifier.email | Baker, DM: dmbaker@hku.hk | - |
dc.identifier.authority | Baker, DM=rp01712 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.3354/meps11270 | - |
dc.identifier.scopus | eid_2-s2.0-84930793931 | - |
dc.identifier.hkuros | 242596 | - |
dc.identifier.eissn | 1616-1599 | - |
dc.identifier.isi | WOS:000356075600009 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 0171-8630 | - |