Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aaf938 |
Hypoxic volume is more responsive than hypoxic area to nutrient load reductions in the northern Gulf of Mexico-and it matters to fish and fisheries | |
Scavia, Donald1; Justic, Dubravko2; Obenour, Daniel R.3; Craig, J. Kevin4; Wang, Lixia2 | |
2019-02-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | While impacts of low oxygen on marine organisms have been reviewed from physiological and ecological perspectives, relating broad population- and ecosystem-level effects to the areal extent of hypoxia (dissolved oxygen concentration below 64 mu M, or 2mg l(-1)) has proven difficult. Wesuggest that hypoxic volume is a more appropriate metric compared to hypoxic area because volume better integrates the effects of hypoxia on ecological processes relevant to many marine taxa. In this paper, we compare the volume-based load responses from a simple biophysical model with results from an independent three-dimensional hydrodynamic-biogeochemical model, and discuss the implications with respect to potentially more ecologically-relevant hypoxia management goals. Wealso show that hypoxic volume appears more sensitive than hypoxic area to nutrient load reductions. Model simulations indicate that even under a modest 25% nitrogen load reduction, the thickness of the hypoxic layer in the northern Gulf of Mexico decreases markedly, and hypoxia remains localized to a relatively thin layer near the bottom that most fish and other mobile organisms can more effectively avoid. This finding should be considered when reviewing and potentially setting hypoxia management goals. |
英文关键词 | hypoxic volume Gulf of Mexico models nitrogen |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458135300002 |
WOS关键词 | PREDICTING SUMMER HYPOXIA ; OF-MEXICO ; LAKE-ERIE ; MISSISSIPPI RIVER ; DISSOLVED-OXYGEN ; HABITAT USE ; LOUISIANA ; MODEL ; ENRICHMENT ; NITROGEN |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32066 |
专题 | 气候变化 |
作者单位 | 1.Univ Michigan, Sch Environm & Sustainabil, Ann Arbor, MI 48104 USA; 2.Louisiana State Univ, Coll Coast & Environm, Dept Oceanog & Coastal Sci, Baton Rouge, LA 70803 USA; 3.North Carolina State Univ, Dept Civil Construct & Environm Engn, Raleigh, NC 27695 USA; 4.NOAA, Southeast Fisheries Sci Ctr, Beaufort Lab, 101 Pivers Isl Rd, Beaufort, NC 28516 USA |
推荐引用方式 GB/T 7714 | Scavia, Donald,Justic, Dubravko,Obenour, Daniel R.,et al. Hypoxic volume is more responsive than hypoxic area to nutrient load reductions in the northern Gulf of Mexico-and it matters to fish and fisheries[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(2). |
APA | Scavia, Donald,Justic, Dubravko,Obenour, Daniel R.,Craig, J. Kevin,&Wang, Lixia.(2019).Hypoxic volume is more responsive than hypoxic area to nutrient load reductions in the northern Gulf of Mexico-and it matters to fish and fisheries.ENVIRONMENTAL RESEARCH LETTERS,14(2). |
MLA | Scavia, Donald,et al."Hypoxic volume is more responsive than hypoxic area to nutrient load reductions in the northern Gulf of Mexico-and it matters to fish and fisheries".ENVIRONMENTAL RESEARCH LETTERS 14.2(2019). |
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