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底层拖网和环境因素对盆地细菌,中动物和宏观动物群落以及盆地生态系统过程的影响

Clare Bradshaw¹, Sven Iburg¹, Claudia Morys¹

¹Stockholm University, Department of Ecology, Environment and Plant Sciences, Stockholm, Sweden.

The Science of the total environment

|February 21, 2024

概括

底部拖网渔业对海洋宏观动物和沉积碳循环产生重大影响. 然而,细菌和 meiofauna 社区结构更受环境因素的影响,而不是捕捞强度.

科学领域:

海洋生态海洋生态学
地生态学地生态学
生态系统过程生态系统过程

背景情况:

软沉积物海洋盆地生态系统是生物地化学循环至关重要的多样性社区的所在地.
底层拖网是一种常见的捕捞方法,可以破坏这些生态系统,影响社区结构和生态系统过程.
已知对宏观动物的影响,但对环境动物,细菌和生态系统过程的影响需要进一步调查.

研究的目的:

检查底部拖网强度和环境变量对盆地社区结构 (细菌,半动物,宏观动物) 的影响.
评估底层拖网对盆地生态系统过程的影响,包括营养流,酶活动和碳循环.
为了研究盆地宏观动物和生态系统过程之间的关系.

主要方法:

研究了底部拖网和环境变量 (水化学,沉积物质) 对盆地社区的影响.
量化细菌,中动物和宏观动物社区结构.
测量了营养物流,细胞外酶活动和碳降解速率.

主要成果:

底层拖网捕捞的强度显著影响了宏观动物群体结构,但并没有影响细菌或生物群体的组成.
细菌和生物群落更多地受到沉积物特性等环境因素的影响.
在高度拖网的地点,可变沉积物碳的含量较高,碳降解,酶活动和一些营养物流受到拖网的影响.

结论:

底层拖网渔业的人类影响在宏观动物组成和沉积碳相关的生态系统过程中最为明显.
地生态系统过程受到拖网捕捞和自然环境变化的影响.
关键的生物化宏观动物在将社区结构与生态系统过程联系起来方面发挥着重要作用.

关键词:

波罗的海波罗的海波罗的海班托斯 (英语:Benthos) 是一种植物.碳碳碳碳碳潜水鱼类的捕捞活动生态系统功能生态系统功能物理上的干扰物理上的干扰

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