Predicting arctic‐alpine lake dissolved oxygen responses to future tree line advance at the Swedish forest‐tundra transition zone
Predicting arctic‐alpine lake dissolved oxygen responses to future tree line advance at the Swedish forest‐tundra transition zone
复制标题
预测北极-高山湖泊溶解氧对瑞典森林-苔原过渡带未来林线推进的反应
DOI：
10.1111/gcb.15748
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发表时间：
2021
影响因子：
11.6
通讯作者：
Rose, Kevin C.
中科院分区：
文献类型：
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作者：
Jane, Stephen F.;Rose, Kevin C.
地球仪的高纬度区域正在经历比许多其他区域更高的变暖速率，并且预计随着未来的变暖将经历显著的变化（Carpenter等人，2011; Kuhn & Butman，2021）。一个这样的变化是向极地前进的树木线到以前的苔原环境。虽然名义上是陆地生态系统的变化，但这种进步可能会极大地改变水生生态系统，特别是湖泊对周围景观中发生的事件反应强烈。Klaus等人（2021）通过在40个瑞典北极高山湖泊中使用空间换时间替代来解决这一重要问题，以了解从苔原到森林流域的过渡将如何影响湖泊溶解氧（DO）DO是水生生态系统可居住性和生物地球化学功能的关键调节器。许多生物体如冷水鱼类需要高度含氧的水，并且在温暖的夏季，这些物种中的许多被限制在水保持凉爽的湖泊的较深区域（Jacobson等人，2010年）。最近的研究强调了这样一个事实，即随着表面沃茨变暖和分层变得更强，世界各地许多湖泊的表面和深层沃茨中的DO也在下降（Jane等人，2021年）。在许多湖泊中，如果湖泊含有大量有机物，那么在夏季的几个月里，深水沃茨可能完全缺氧（Stefan等人，1996年），如在富营养条件下或在被大量溶解有机物源（如湿地）包围的湖泊中发生。这种缺氧会导致沉积物中限制性营养物质的释放，可能导致藻类生物量增加。这种水华事件可能包括对人类健康有不利影响的有毒蓝藻。缺氧也可能导致甲烷释放增加（Fernández等人，（2014）这是一个
High latitude regions of the globe are experiencing higher warming rates than many other areas and are expected to undergo dramatic change with future warming (Carpenter et al., 2011; Kuhn & Butman, 2021). One such change is the poleward advance of tree line into prior tundra environments. While nominally a terrestrial ecosystem change, this advance may dramatically alter aquatic ecosystems, with lakes in particular being highly responsive to events that occur in the surrounding landscape. Klaus et al.(2021) address this important issue by using a space-for-time substitution across 40 Swedish arctic-alpine lakes to understand how a transition from tundra to forested watersheds will influence lake dissolved oxygen (DO).DO is a critical regulator of aquatic ecosystem habitability and biogeochemical functioning. Many organisms such as cold-water fish species require highly oxygenated water, and during warm summer months, many of these species are restricted to the deeper regions of lakes where water remains cool (Jacobson et al., 2010). Recent research highlights the fact that DO is also declining in both the surface and deep waters of many lakes around the world as surface waters warm and stratification becomes stronger (Jane et al., 2021). In many lakes, deep waters may lack oxygen entirely during summer months if a lake has large amounts of organic matter (Stefan et al., 1996), such as occurs under nutrient enriched conditions or in lakes surrounded by large sources of dissolved organic matter such as wetlands. This anoxia can cause the release of limiting nutrients from sediments, potentially resulting in increased algal biomass. Such bloom events may include toxic cyanobacteria that have adverse human health effects. Anoxia may also result in increased release of methane (Fernández et al., 2014), which is a
林线推进通过避风和有机碳供应减少了北极-高山湖泊的混合和氧气浓度
影响因子：
11.6
作者：
M. Klaus;J. Karlsson;D. Seekell
通讯作者：
D. Seekell
Takahashi, T.：“日本海冬季积云中大量冰晶的产生。”
DOI：
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期刊：
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北半球大气静止加速了湖泊对全球变暖的热反应
影响因子：
5.2
作者：
R. Woolway;Christopher J. Merchant;J. Van Den Hoek;C. Azorín;P. Nõges;Alo Laas;Eleanor B Mackay;Ian D. Jones
通讯作者：
Ian D. Jones