Evaluation of anthropogenic influences on the L uhuitou fringing reef via spatial and temporal analyses (from isotopic values)
| العنوان: | Evaluation of anthropogenic influences on the |
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| المؤلفون: | K. Yu, Jun Yang, Guan-Wei Wu, Feng Wang, Wenzhi Cao, X. Su, D. Cao |
| المصدر: | Journal of Geophysical Research: Oceans. 122:4431-4443 |
| بيانات النشر: | American Geophysical Union (AGU), 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 0106 biological sciences, chemistry.chemical_classification, Total organic carbon, geography, Detritus, geography.geographical_feature_category, 010504 meteorology & atmospheric sciences, 010604 marine biology & hydrobiology, Fringing reef, Coral reef, Oceanography, 01 natural sciences, Geophysics, chemistry, Space and Planetary Science, Geochemistry and Petrology, Phytoplankton, Earth and Planetary Sciences (miscellaneous), Environmental science, Organic matter, Ecosystem, Reef, 0105 earth and related environmental sciences |
| الوصف: | Coral reefs have suffered remarkable declines worldwide. Nutrient over-enrichment is considered to be one of the primary local causes. The Luhuitou fringing reef in southern China is a well-known tourist destination that is subject to enormous coastal renovation. The mean δ13C, δ15N value and carbon over nitrogen ratio (C/N) of particulate organic matter were - 21.56 ± 1.94 ‰, 7.04 ± 3.81 ‰ and 5.81 ± 1.86, respectively, suggesting mixed sources of carbon and nitrogen. The IsoError calculations suggested that marine phytoplankton and marine benthic algae dominated the majority of carbon sources, while anthropogenic and terrestrial organic nitrogen dominated the nitrogen sources. A tendency towards greater terrestrial detritus and anthropogenic-derived discharges was found during dry seasons, and greater marine-derived organic matter during wet seasons. These results demonstrated the existence of anthropogenic influences and high dissolved inorganic nitrogen concentrations and C/N ratios. Anthropogenic nutrient discharge moderated nitrogen limitation, whereas phosphorus became more important to the reef ecosystem. Despite the marine carbon sources dominated, freshwater and terrestrial derived organic carbon sources were also very important. Meanwhile, anthropogenic and terrestrial organic nitrogen sources were dominant. Therefore, pollution from more extensive region and anthropogenic activities from riverine sewage discharges adjacent to reefs should be focused to effectively reduce human-derived nutrients on reefs. |
| تدمد: | 2169-9291 2169-9275 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::7cab17c00bec79559dfe1daad4820a9a https://doi.org/10.1002/2017jc012871 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........7cab17c00bec79559dfe1daad4820a9a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21699291 21699275 |
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