DOI: 10.1111/gcb.14580
Scopus记录号: 2-s2.0-85062345481
论文题名: Decoupled trophic responses to long-term recovery from acidification and associated browning in lakes
作者: Leach T.H. ; Winslow L.A. ; Hayes N.M. ; Rose K.C.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2019
语种: 英语
英文关键词: acidification
; Adirondack Mountains
; aquatic
; calcium
; dissolved organic matter
; long-term trends
英文摘要: Increases in the concentration of dissolved organic matter (DOM) have been documented in many inland waters in recent decades, a process known as “browning”. Previous studies have often used space-for-time substitution to examine the direct consequences of increased DOM on lake ecosystems. However, browning often occurs concomitant with other ecologically important water chemistry changes that may interact with or overwhelm any potential ecological response to browning itself. Here we examine a long-term (~20 year) dataset of 28 lakes in the Adirondack Park, New York, USA, that have undergone strong browning in response to recovery from acidification. With these data, we explored how primary producer and zooplankton consumer populations changed during this time and what physical and chemical changes best predicted these long-term ecosystem changes. Our results indicate that changes in primary producers are likely driven by reduced water clarity due to browning, independent of changes in nutrients, counter to previously hypothesized primary producer response to browning. In contrast, declines in calcium concomitant with browning play an important role in driving long-term declines in zooplankton biomass. Our results indicate that responses to browning at different trophic levels are decoupled from one another. Concomitant chemical changes have important implications for our understanding of the response of aquatic ecosystems to browning. © 2019 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117536
Appears in Collections: 气候变化与战略
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Recommended Citation:
Leach T.H.,Winslow L.A.,Hayes N.M.,et al. Decoupled trophic responses to long-term recovery from acidification and associated browning in lakes[J]. Global Change Biology,2019-01-01