Element cycling and aquatic function in a changing Arctic
Element cycling and aquatic function in a changing Arctic
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DOI：
10.1002/lno.11717
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发表时间：
2021-02
影响因子：
4.5
通讯作者：
P. Hernes;S. Tank;Mikael K. Sejr;R. Glud
中科院分区：
文献类型：
--
作者：
P. Hernes;S. Tank;Mikael K. Sejr;R. Glud
北极系统受到人类活动的巨大压力，特别是气候变化导致相互关联的水循环和各种地球化学成分迅速变化，从而也导致依赖这些循环的生态过程迅速变化。这期湖沼学和海洋学特刊探讨了不断变化的北极，对流域-湖泊-河流-河口-沿海-公海连续体的贡献，以及从物理和化学过程到食物网的关注点。一些具体的重点领域包括矿山遗留污染、湖泊温室气体排放、河流物质通量以及海洋系统中水柱和底栖生物的初级生产和呼吸之间的平衡。虽然重点各不相同，但作为一个文集，这期特刊中的论文确实为今后的努力提供了关键途径。例如，由于财政和物流成本，北极系统历来研究不足，尽管面临挑战，但长期监测工作对于记录变化显然至关重要。在淡水系统中，基于景观特征和湖泊形态预测湖泊地球化学，从而预测生态学，是一种正在进行的实践，对于扩大规模和决定未来的研究工作重点似乎特别有希望。在海洋和沿海系统中，明确需要用大规模跨学科监测计划补充特定的地方研究，以阐明长期趋势。虽然基线研究对于记录北极目前的状况至关重要，并且构成了当前研究工作的大部分，但对长期观测站和扩大遥感能力的持续支持是跟踪变化的基本要求。
Arctic systems are under intense pressure from anthropogenic activities, with climate change in particular inducing rapid change in the interlinked cycling of water and various biogeochemical constituents, and thus also the ecological processes that depend on these cycles. This special issue for Limnology and Oceanography explores our changing Arctic, with contributions across the watershed‐lake‐river‐estuary‐coastal‐open ocean continuum, and foci ranging from physical and chemical processes to food webs. Some specific areas of focus include legacy pollution from mines, greenhouse gas emissions from lakes, riverine fluxes of materials, as well as the balance between primary production and respiration in the water column and benthos in marine systems. While varied in focus, as a collection the papers in this special issue do provide direction into key avenues for future effort. For example, while Arctic systems are historically understudied due to financial and logistical costs, long‐term monitoring efforts are clearly critical for documenting change, despite the challenges. In freshwater systems, predicting biogeochemistry, and thus ecology, based on landscape characteristics and lake morphology is an ongoing practice that seems particularly promising for both upscaling and decisions on focusing future research effort. In marine and coastal systems, complementing specific local studies with large‐scale cross‐disciplinary monitoring programs is clearly required for elucidating long‐term trends. While baseline research is critical for documenting the Arctic as it currently stands, and constitutes the majority of current research efforts, ongoing support for long‐term observatories and expanding remote sensing capabilities is a fundamental requirement for tracking change.