对西南极半岛植物浮游生物的长期研究表明,温带和极地物种之间的范围转移
Julieta S Antoni1,2, Gastón O Almandoz1,2, Jesica Goldsmit3,4,5
1División Ficología, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina.
Global change biology
|March 18, 2024
概括
西南极半岛的海洋变暖正在导致植物浮游生物群落发生重大变化. 一种新的藻种,Shionodiscus gaarderae,现在正在主导开花,表明南极食物网的潜在转变.
科学领域:
- 海洋生物学 海洋生物学
- 海洋学 海洋学 海洋学
- 南极洲的生态系统
背景情况:
- 西南极半岛 (WAP) 显示了海面的快速变暖.
- 从1990年至2009年,波特湾 (PC) 的浮游生物监测显示,生物质较低,冷水藻开花.
- 在2010-2020年期间观察到花朵强度和组成的变化.
研究的目的:
- 从2010年到2020年记录波特湾 (WAP) 植物浮游生物群落的变化.
- 研究南极食物网上新物种存在的影响.
- 将最近的发现与历史的浮游植物数据进行比较.
主要方法:
- 在波特湾长期监测植物浮游生物.
- 植物浮游生物质和物种组成的分析.
- 将2010-2020年的数据与1990-2009年的数据进行比较.
主要成果:
- 在2010年至2020年期间,强烈的植物浮游生物繁荣显著增加.
- 一种纳米浮游生物藻,Shionodiscus gaarderae,出现了,有时会主导开花.
- 这种物种通常在温带水域中发现,这表明了范围的转移或引入.
结论:
- 在WAP中存在Shionodiscus gaarderae可能表明对海水温度上升的反应.
- 这表明了从微浮游生物藻到较小的纳米浮游生物物种的潜在转变.
- 这些变化可能对南极食物网结构产生重大影响.
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