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宏观植物的热带:度变化表明气候变化对生态系统运作的影响

Marc J Silberberger^1,2, Katarzyna Koziorowska-Makuch¹, Henning Reiss³

¹Institute of Oceanology Polish Academy of Sciences, Sopot, Poland.

Global change biology

|January 26, 2024

概括

气候变化影响海洋生态系统. 北极盆地食物网显示资源分区,而温带食物网则依赖沉积式有机物 (OM),表明功能差异和OM利用的潜在转变.

科学领域:

海洋生态海洋生态学
气候变化生物学气候变化生物学
生物地质化学生物地质化学

背景情况:

地食物网结构和有机物质 (OM) 的利用对于海洋生态系统的运行至关重要.
气候变化正在推动物种范围向寒冷地区转移,这可能会改变社区组成和生态系统功能.
这些转变对谷底生态系统运作的影响,特别是OM利用,仍然不太了解.

研究的目的:

在度梯度上研究盆地OM利用和食物网结构.
评估食物网结构中的空间模式是否反映了当前生物地理区域和深度区域之间的社区差异化.
使用时空替代方法来评估气候变化对谷底生态系统的影响.

主要方法:

稳定同位素分析被用来追踪OM来源和食物网的联系.
从温带,亚北极和北极峡湾的各种深度区域 (100-150米和200-250米) 收集了土动物和OM样本.
一个度梯度 (59-78°N) 被用作气候变化影响的代理.

主要成果:

北极和温带盆地社区表现出不同的功能特征.
北极社区在养类型之间展示了显著的资源分区,独立于深度.
温带社区在所有养类型中普遍依赖沉积物OM.
亚北极社区显示过渡模式,较浅的地点类似于北极社区,较深的地点类似于温带社区.

结论:

在北极和温带地区之间,岩食物网结构和OM利用有很大差异.
亚北极地区作为一个功能过渡区,深度介导区域气候的影响.
目前过渡区 (深北极,浅南北极) 以北的地区最容易受到谷底食物网的功能性改变的影响,这是由于气候变化引起的OM利用转变.

关键词:

地宏观动物地宏观动物这是一个深度深度的深度.同位素的利基.海洋食物网 (marine food webs) 是一种海洋食物网.空间替代时间的替代.稳定的同位素分析.

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