南极半岛西部冰川融水对浮游植物生物量的影响。

IF 8.9 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES
Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-06-12 DOI:10.1038/s43247-025-02435-6
B Jack Pan, Michelle M Gierach, Sharon Stammerjohn, Oscar Schofield, Michael P Meredith, Rick A Reynolds, Maria Vernet, F Alexander Haumann, Alexander J Orona, Charles E Miller
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引用次数: 0

摘要

南极半岛西部正在经历迅速的环境变化。区域变暖导致冰川融水流量增加,但这种融水在大时空尺度上的生态影响尚不清楚。在这里,我们利用20年的遥感数据、再分析产品和实地观测来评估海面冰川融水对浮游植物生物量的影响,并强调其作为该地区生产性生态系统的关键环境驱动因素的重要性。我们发现融水和浮游植物叶绿素-a在多个时间尺度和数据集之间存在很强的相关性。我们将这种关系归因于冰川融水的营养施肥,以及与海冰存在相关的表面海洋稳定的潜在额外贡献。虽然高浮游植物生物量通常伴随着延长的冬季海冰季节,并且取决于光照和营养限制之间的相互作用,但我们的研究结果表明,近年来冰川融水增加对浮游植物群落的积极影响可能会减轻该地区海冰损失的负面影响。我们的研究结果强调了将冰川融水作为极地沿海生态系统的关键生态驱动力的迫切需要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of glacial meltwater on phytoplankton biomass along the Western Antarctic Peninsula.

The Western Antarctic Peninsula is undergoing rapid environmental change. Regional warming is causing increased glacial meltwater discharge, but the ecological impact of this meltwater over large spatiotemporal scales is not well understood. Here, we leverage 20 years of remote sensing data, reanalysis products, and field observations to assess the effects of sea surface glacial meltwater on phytoplankton biomass and highlight its importance as a key environmental driver for this region's productive ecosystem. We find a strong correlation between meltwater and phytoplankton chlorophyll-a across multiple time scales and datasets. We attribute this relationship to nutrient fertilization by glacial meltwater, with potential additional contribution from surface ocean stabilization associated with sea-ice presence. While high phytoplankton biomass typically follows prolonged winter sea-ice seasons and depends on the interplay between light and nutrient limitation, our results indicate that the positive effects of increased glacial meltwater on phytoplankton communities likely mitigate the negative impact of sea-ice loss in this region in recent years. Our findings underscore the critical need to consider glacial meltwater as a key ecological driver in polar coastal ecosystems.

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来源期刊
Communications Earth & Environment
Communications Earth & Environment Earth and Planetary Sciences-General Earth and Planetary Sciences
CiteScore
8.60
自引率
2.50%
发文量
269
审稿时长
26 weeks
期刊介绍: Communications Earth & Environment is an open access journal from Nature Portfolio publishing high-quality research, reviews and commentary in all areas of the Earth, environmental and planetary sciences. Research papers published by the journal represent significant advances that bring new insight to a specialized area in Earth science, planetary science or environmental science. Communications Earth & Environment has a 2-year impact factor of 7.9 (2022 Journal Citation Reports®). Articles published in the journal in 2022 were downloaded 1,412,858 times. Median time from submission to the first editorial decision is 8 days.
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