Climate Change Data Portal
| DOI | 10.1111/fwb.14219 |
| Long-term phytoplankton dynamics in two High Arctic lakes (north-east Greenland) | |
| Moedt, Sanne M.; Olrik, Kirsten; Schmidt, Niels M.; Jeppesen, Erik; Christoffersen, Kirsten S. | |
| 发表日期 | 2024 |
| ISSN | 0046-5070 |
| EISSN | 1365-2427 |
| 起始页码 | 69 |
| 结束页码 | 3 |
| 卷号 | 69期号:3 |
| 英文摘要 | 1. Primary producers form the base of lake ecosystems and, due to their often short lifecycles, respond rapidly to changing conditions. As the Arctic is warming nearly four times faster than the global average, we see major shifts in environmental conditions, which impacts lake ecosystem functioning. Previous studies have found a general increase in primary productivity due to climate warming. However, few long-term studies have included changes in phytoplankton community composition and biomass in relation to warming in Arctic lakes and it therefore remains unclear how different algal taxa and thus the community respond. 2.We investigated how climate warming affects phytoplankton community composition, taxon richness and biomass in High Arctic lakes, using a unique 23-year data series on phytoplankton in two shallow lakes at Zackenberg, north-east Greenland, one with Arctic charr (Salvelinus alpinus) and one without fish. We further elucidated the role of physico-chemical variables and zooplankton grazers in the changes observed. 3. Few major changes were observed in phytoplankton community composition over time, but the year-to-year variation was large. Taxon richness did, however, increase throughout the monitoring period, and in both lakes there was a significant increase in diatom biomass coinciding with increasing conductivity. Additionally, phytoplankton biomass was greater during warmer years with earlier ice melt. We further found that nutrient levels were positively associated with the total phytoplankton biomass in both lakes, indicating that expected increased nutrient levels, due to climate change, may lead to a greater phytoplankton biomass in High Arctic lakes in the future. 4. The large year-to-year variability, in both climate and environmental conditions, makes it difficult to predict weather patterns and their consequences for lake ecosystems in the Arctic region. This underlines the importance of long-term monitoring programmes across the circumpolar Arctic and collaboration across regions and institutes within large scale studies. |
| 英文关键词 | Arctic lakes; climate change; community composition; phytoplankton biomass; time-series |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| WOS类目 | Ecology ; Marine & Freshwater Biology |
| WOS记录号 | WOS:001155603100001 |
| 来源期刊 | FRESHWATER BIOLOGY
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/290157 |
| 作者单位 | University of Copenhagen; Aarhus University; Aarhus University; Middle East Technical University; Middle East Technical University; Middle East Technical University; Yunnan University; University Centre Svalbard (UNIS) |
| 推荐引用方式 GB/T 7714 | Moedt, Sanne M.,Olrik, Kirsten,Schmidt, Niels M.,et al. Long-term phytoplankton dynamics in two High Arctic lakes (north-east Greenland)[J],2024,69(3). |
| APA | Moedt, Sanne M.,Olrik, Kirsten,Schmidt, Niels M.,Jeppesen, Erik,&Christoffersen, Kirsten S..(2024).Long-term phytoplankton dynamics in two High Arctic lakes (north-east Greenland).FRESHWATER BIOLOGY,69(3). |
| MLA | Moedt, Sanne M.,et al."Long-term phytoplankton dynamics in two High Arctic lakes (north-east Greenland)".FRESHWATER BIOLOGY 69.3(2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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