气候变化领域集成服务门户(CCPortal): Nutrient thresholds to protect water quality and coral reefs

CCPortal

DOI	10.1016/j.marpolbul.2020.111451
	Nutrient thresholds to protect water quality and coral reefs
	Houk P.; Comeros-Raynal M.; Lawrence A.; Sudek M.; Vaeoso M.; McGuire K.; Regis J.
发表日期	2020
ISSN	0025326X
卷号	159
英文摘要	Establishing nutrient thresholds to protect coral reefs is difficult because water quality is dynamic and shifts with many environmental factors. We examined the contribution of natural and human factors in predicting water quality at the base of 34 streams on a high tropical Pacific island. Mixed regression models revealed that rainfall, sea-surface temperature, and windspeed were fixed factors predicting dissolved inorganic nitrogen (DIN) concentrations at the base of all watersheds. In contrast, human influences were captured as random components of variation associated with site-based differences. The novel modeling approach using temporal and spatial data provided daily-loading simulations that were used to evaluate exceedance criteria, defined as the percent of time each watershed exceeded a suite of DIN thresholds. Exceedance criteria were considered alongside biological data to recommend a 0.1 to 0.15 mg l−1 benchmark to protect coastal water quality and coral reefs surrounding Tutuila, American Samoa. © 2020 Elsevier Ltd
英文关键词	Coral reefs; Dissolved inorganic nitrogen; Mixed-regression modeling; Total maximum daily loads; Water-quality standards
语种	英语
scopus关键词	Nutrients; Oceanography; Reefs; Regression analysis; Surface waters; Water quality; Coastal water quality; Dissolved inorganic nitrogens; Environmental factors; Loading simulation; Random components; Regression model; Sea surface temperature (SST); Temporal and spatial; Benchmarking; dissolved inorganic nitrogen; nitrogen; rain; unclassified drug; anthropogenic effect; coastal water; concentration (composition); coral reef; dissolved organic nitrogen; environmental factor; nutrient; rainfall; sea surface temperature; water quality; wind velocity; American Samoa; Article; classification; coastal waters; concentration (parameter); controlled study; coral reef; environmental protection; exceedance criteria; mixed regression model; nonhuman; nutrient; nutrient threshold; Pacific islands; prediction; regression analysis; sea surface temperature; simulation; spatial analysis; stream (river); temporal analysis; water quality; watershed; wind speed; Anthozoa; human; water quality; American Samoa; Pacific Ocean; Pacific Ocean (Tropical); Tutuila; Anthozoa; American Samoa; Anthozoa; Coral Reefs; Humans; Nutrients; Pacific Islands; Water Quality
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148707
作者单位	University of Guam Marine Laboratory, UOG Station, Mangilao, GU 96923, United States; Arc Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia; Coral Reef Advisory Group, Department of Marine and Wildlife Resources, Pago Pago, AS 96799, Samoa; National Marine Sanctuary of American Samoa, Pago Pago, AS 96799, Samoa; American Samoa Environmental Protection Agency, Pago Pago, AS 96799, Samoa
推荐引用方式 GB/T 7714	Houk P.,Comeros-Raynal M.,Lawrence A.,et al. Nutrient thresholds to protect water quality and coral reefs[J],2020,159.
APA	Houk P..,Comeros-Raynal M..,Lawrence A..,Sudek M..,Vaeoso M..,...&Regis J..(2020).Nutrient thresholds to protect water quality and coral reefs.Marine Pollution Bulletin,159.
MLA	Houk P.,et al."Nutrient thresholds to protect water quality and coral reefs".Marine Pollution Bulletin 159(2020).