在本地海草床上侵入性宏藻:传播媒介和影响
Louise B Firth1, Andy Foggo1, Thomas Watts1
1School of Biological and Marine Sciences, University of Plymouth, Plymouth, UK.
Annals of botany
|October 3, 2023
概括
虫可以运输入侵性藻类Sargassum muticum,将其引入海草床. 这种入侵减少了海草的防御能力,可能削弱了它对进一步生态破坏的抵御力.
科学领域:
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
- 侵入性物种研究 侵入性物种研究
背景情况:
- 海洋入侵物种在全球范围内蔓延,影响生态系统和生物.
- 人类活动是主要的载体,但像生病这样的生物相互作用正在显著地出现.
- 了解新的传播机制对于海洋保护至关重要.
研究的目的:
- 作为入侵性藻类Sargassum muticum的新型运输机制,调查.
- 评估Sargassum muticum入侵对海草Zostera marina的生理影响.
- 确定生病在入侵物种进入敏感海洋息地中的作用.
主要方法:
- 进行了潮间和海草调查,以评估Sargassum muticum-limpet的关联.
- 进行了为期4年的实地研究,研究了Zostera海喷射密度,干重和化合物.
- 利用实验室实验来分析营养分离,光合作用效率 (Fv/Fm) 和Zostera marina在入侵下的生长.
主要成果:
- 在岩石海岸 (15%) 和海草床 (5%) 上发现 Sargassum muticum 附着在上.
- 在Sargassum muticum共同入侵的地区,Zostera marina的密度和含量减少.
- Sargassum muticum没有影响Zostera marina的营养分区,但具有可变的光合作用反应.
结论:
- 林佩特 (Limpets) 作为生生物和以前未被识别的载体,可以将Sargassum muticum引入新的息地.
- 在Zostera marina中减少的元素可能会损害其防御能力,促进Sargassum muticum的扩散.
- 佐斯特拉海对Sargassum muticum表现出一些弹性,特别是在营养分离方面,尽管光合作用影响需要进一步调查.
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