Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15797 |
Earlier winter/spring runoff and snowmelt during warmer winters lead to lower summer chlorophyll-a in north temperate lakes | |
Allison R. Hrycik; Peter D. F. Isles; Rita Adrian; Matthew Albright; Linda C. Bacon; Stella A. Berger; Ruchi Bhattacharya; Hans-Peter Grossart; Josef Hejzlar; Amy Lee Hetherington; Lesley B. Knoll; Alo Laas; Cory P. McDonald; Kellie Merrell; Jens C. Nejstgaard; Kirsten Nelson; Peeter Nõ; ges; Andrew M. Paterson; Rachel M. Pilla; Dale M. Robertson; Lars G. Rudstam; James A. Rusak; Steven Sadro; Eugene A. Silow; Jason D. Stockwell; Huaxia Yao; Kiyoko Yokota; Donald C. Pierson | |
2021-07-20 | |
发表期刊 | Global Change Biology
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出版年 | 2021 |
英文摘要 | Winter conditions, such as ice cover and snow accumulation, are changing rapidly at northern latitudes and can have important implications for lake processes. For example, snowmelt in the watershed—a defining feature of lake hydrology because it delivers a large portion of annual nutrient inputs—is becoming earlier. Consequently, earlier and a shorter duration of snowmelt are expected to affect annual phytoplankton biomass. To test this hypothesis, we developed an index of runoff timing based on the date when 50% of cumulative runoff between January 1 and May 31 had occurred. The runoff index was computed using stream discharge for inflows, outflows, or for flows from nearby streams for 41 lakes in Europe and North America. The runoff index was then compared with summer chlorophyll-a (Chl-a) concentration (a proxy for phytoplankton biomass) across 5–53 years for each lake. Earlier runoff generally corresponded to lower summer Chl-a. Furthermore, years with earlier runoff also had lower winter/spring runoff magnitude, more protracted runoff, and earlier ice-out. We examined several lake characteristics that may regulate the strength of the relationship between runoff timing and summer Chl-a concentrations; however, our tested covariates had little effect on the relationship. Date of ice-out was not clearly related to summer Chl-a concentrations. Our results indicate that ongoing changes in winter conditions may have important consequences for summer phytoplankton biomass and production. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
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/333817 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Allison R. Hrycik,Peter D. F. Isles,Rita Adrian,et al. Earlier winter/spring runoff and snowmelt during warmer winters lead to lower summer chlorophyll-a in north temperate lakes[J]. Global Change Biology,2021. |
APA | Allison R. Hrycik.,Peter D. F. Isles.,Rita Adrian.,Matthew Albright.,Linda C. Bacon.,...&Donald C. Pierson.(2021).Earlier winter/spring runoff and snowmelt during warmer winters lead to lower summer chlorophyll-a in north temperate lakes.Global Change Biology. |
MLA | Allison R. Hrycik,et al."Earlier winter/spring runoff and snowmelt during warmer winters lead to lower summer chlorophyll-a in north temperate lakes".Global Change Biology (2021). |
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