Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13810 |
Unexpected stasis in a changing world: Lake nutrient and chlorophyll trends since 1990 | |
Oliver, Samantha K.1; Collins, Sarah M.1,2; Soranno, Patricia A.2; Wagner, Tyler3; Stanley, Emily H.1; Jones, John R.4; Stow, Craig A.5; Lottig, Noah R.1 | |
2017-12-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The United States (U.S.) has faced major environmental changes in recent decades, including agricultural intensification and urban expansion, as well as changes in atmospheric deposition and climate-all of which may influence eutrophication of freshwaters. However, it is unclear whether or how water quality in lakes across diverse ecological settings has responded to environmental change. We quantified water quality trends in 2913 lakes using nutrient and chlorophyll (Chl) observations from the Lake Multi-Scaled Geospatial and Temporal Database of the Northeast U.S. (LAGOS-NE), a collection of preexisting lake data mostly from state agencies. LAGOS-NE was used to quantify whether lake water quality has changed from 1990 to 2013, and whether lake-specific or regional geophysical factors were related to the observed changes. We modeled change through time using hierarchical linear models for total nitrogen (TN), total phosphorus (TP), stoichiometry (TN:TP), and Chl. Both the slopes (percent change per year) and intercepts (value in 1990) were allowed to vary by lake and region. Across all lakes, TN declined at a rate of 1.1% year(-1), while TP, TN:TP, and Chl did not change. A minority (7%-16%) of individual lakes had changing nutrients, stoichiometry, or Chl. Of those lakes that changed, we found differences in the geospatial variables that were most related to the observed change in the response variables. For example, TN and TN:TP trends were related to region-level drivers associated with atmospheric deposition of N; TP trends were related to both lake and region-level drivers associated with climate and land use; and Chl trends were found in regions with high air temperature at the beginning of the study period. We conclude that despite large environmental change and management efforts over recent decades, water quality of lakes in the Midwest and Northeast U.S. has not overwhelmingly degraded or improved. |
英文关键词 | eutrophication hierarchical linear models lakes multiscaled drivers nutrients random forest stoichiometry water quality |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000414969000041 |
WOS关键词 | WATER-QUALITY ; CLIMATE-CHANGE ; UNITED-STATES ; FRESH-WATER ; TEMPORAL TRENDS ; LONG-TERM ; AGRICULTURAL INTENSIFICATION ; CULTURAL EUTROPHICATION ; CONSERVATION PRACTICES ; TOTAL NITROGEN |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/16582 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Wisconsin Madison, Ctr Limnol, Madison, WI 53706 USA; 2.Michigan State Univ, Dept Fisheries & Wildlife, E Lansing, MI 48824 USA; 3.Penn State Univ, US Geol Survey, Penn Cooperat Fish & Wildlife Res Unit, University Pk, PA 16802 USA; 4.Univ Missouri, Dept Fisheries & Wildlife Sci, Columbia, MO USA; 5.NOAA, Great Lakes Environm Res Lab, 2205 Commonwealth Blvd, Ann Arbor, MI 48105 USA |
推荐引用方式 GB/T 7714 | Oliver, Samantha K.,Collins, Sarah M.,Soranno, Patricia A.,et al. Unexpected stasis in a changing world: Lake nutrient and chlorophyll trends since 1990[J]. GLOBAL CHANGE BIOLOGY,2017,23(12). |
APA | Oliver, Samantha K..,Collins, Sarah M..,Soranno, Patricia A..,Wagner, Tyler.,Stanley, Emily H..,...&Lottig, Noah R..(2017).Unexpected stasis in a changing world: Lake nutrient and chlorophyll trends since 1990.GLOBAL CHANGE BIOLOGY,23(12). |
MLA | Oliver, Samantha K.,et al."Unexpected stasis in a changing world: Lake nutrient and chlorophyll trends since 1990".GLOBAL CHANGE BIOLOGY 23.12(2017). |
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