DOI: 10.1016/j.marpolbul.2017.04.028
Scopus记录号: 2-s2.0-85018303645
论文题名: Evidence of chronic anthropogenic nutrient within coastal lagoon reefs adjacent to urban and tourism centers, Kenya: A stable isotope approach
作者: Mwaura J. ; Umezawa Y. ; Nakamura T. ; Kamau J.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2017
卷: 119, 期: 2 起始页码: 74
结束页码: 86
语种: 英语
英文关键词: Anthropogenic nutrient
; Coral reefs
; Kenya
; Macroalgae
; Sedimentary organic matter
; Stable nitrogen isotope
Scopus关键词: Biogeochemistry
; Biological materials
; Isotopes
; Organic compounds
; Population statistics
; Reefs
; Sedimentology
; Seepage
; Coral reef
; Kenya
; Macro-algae
; Sedimentary organic matter
; Stable nitrogen isotope
; Nutrients
; delta nitrogen 15
; organic matter
; radioisotope
; unclassified drug
; isotope
; nitrogen
; anthropogenic source
; coastal lagoon
; concentration (composition)
; coral reef
; macroalga
; marine sediment
; nitrogen isotope
; nutrient enrichment
; organic matter
; pollution incidence
; pollution monitoring
; stable isotope
; tourist destination
; urban area
; Article
; concentration (parameters)
; controlled study
; coral reef
; Cymodocea rotundata
; isotope analysis
; Kenya
; lagoon
; macroalga
; measurement precision
; nonhuman
; nutrient loading
; Padina
; population density
; sediment
; Syringodium isoetifolium
; Thalassia hemprichii
; Thalassodendron ciliatum
; tourism
; Ulva
; urban area
; ecosystem
; human
; recreation
; seaweed
; travel
; Kenya
; Mombasa [Kenya]
; Mombasa [Mombasa (CNT)]
; Anthozoa
; Coral Reefs
; Ecosystem
; Humans
; Isotopes
; Kenya
; Nitrogen Isotopes
; Recreation
; Seaweed
; Travel
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: The source of anthropogenic nutrient and its spatial extent in three fringing reefs with differing human population gradients in Kenya were investigated using stable isotope approaches. Nutrient concentrations and nitrate-δ15N in seepage water indicated that population density and tourism contributed greatly to the extent of nutrient loading to adjacent reefs. Although water-column nutrient analyses did not show any significant difference among the reefs, higher δ15N and N contents in macrophytes showed terrestrial nutrients affected primary producers in onshore areas in Nyali and Bamburi reefs, but were mitigated by offshore water intrusion especially at Nyali. On the offshore reef flat, where the same species of macroalgae were not available, complementary use of δ15N in sedimentary organic matter suggested inputs of nutrients originated from the urban city of Mombasa. If population increases in the future, nutrient conditions in the shallower reef, Vipingo, may be dramatically degraded due to lower water exchange ratio. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/87553
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Kenya Marine and Fisheries Research Institute, P.O. Box 81651-80100, Kenya; Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo, Nagasaki, Japan; Department of Mechanical and Environmental Informatics, Graduate School of Information Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1 W8-13 Meguro, Tokyo, Japan
Recommended Citation:
Mwaura J.,Umezawa Y.,Nakamura T.,et al. Evidence of chronic anthropogenic nutrient within coastal lagoon reefs adjacent to urban and tourism centers, Kenya: A stable isotope approach[J]. Marine Pollution Bulletin,2017-01-01,119(2)