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一种入侵性大藻类物种对海残骸CO2排放的高贡献

Iván Franco Rodil¹, Valle Perez Rodriguez¹, Alejandro Bernal-Ibáñez²

¹Marine Research Institute (INMAR)-Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, Cádiz, Spain.

Journal of environmental management

|July 30, 2024

概括

侵袭性海藻 (Rugulopteryx okamurae) 的大量积累大大增加了海的温室气体 (GHG) 排放. 将海藻从海岸线转移到干燥地区可能会减少二氧化碳排放,但需要谨慎管理.

科学领域:

海洋生态海洋生态学
生物地质化学生物地质化学
侵入性物种研究研究侵入性物种研究

背景情况:

宏观藻类残骸对于海生态系统至关重要.
突然的海藻堆积会损害旅游业,改变沙的新陈代谢.
瓦的分解增加了温室气体 (GHG) 排放,并影响了沙子的生物地质化学.

研究的目的:

量化入侵性的Rugulopteryx okamurae的残骸生物量.
评估R. okamurae残骸对现场呼吸系统二氧化碳流的影响.
评估大型残骸沉积物的管理策略.

主要方法:

在西班牙五个大西洋海上对残骸生物质的现场量化.
使用红外气体分析仪测量二氧化碳流.
对残骸厚度,退化状态和距离海岸线的距离进行分析.

主要成果:

观察到大量的R. okamurae积累,生物质范围从968.3到9210公斤米-1.
记录了高的二氧化碳流量 (平均为19.15μmol CO2 m-2 s-1,峰值高达291μmol CO2 m-2 s-1).
随着残骸的厚度,退化和靠近海岸线的距离,二氧化碳排放量增加.

结论:

大规模的R. okamurae残骸可能是全球温室气体排放的重要来源.
将残骸转移到上海地区可能会减少排放,但会带来生态风险.
迫切需要可持续的管理实践,平衡保护和娱乐.

关键词:

沙管理沙管理蓝色碳是一种蓝色碳.代谢热点是代谢热点.鲁古洛普特里克斯 (Rugulopteryx) 是一个毛动物.空间补贴空间补贴沉积在残骸中的沉积物.

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