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在河流-河岸元生态系统中的全球性allochthony模式

Daniel C Allen¹, James Larson², Christina A Murphy³

¹Department of Ecosystem Science and Management, The Pennsylvania State University, University Park, Pennsylvania, USA.

Ecology letters

|March 12, 2024

概括

河流和河岸生态系统表现出相当的分配,即对外部资源的消耗. 然而,鱼类的度因季节而异,水生无脊椎动物的度因气候而异,影响生态系统的连接.

科学领域:

生态生态学生态生态学
超生态系统的动态
生物地化学补贴生物地化学补贴

背景情况:

通过能量和营养流连接的生态系统形成了超生态系统.
这些相互流动往往是不对称的,并且有季节性脉冲.
对于消费者来说,外部补贴的消费至关重要,但容易受到人类干扰.

研究的目的:

综合全球关于河流沿岸元生态系统的文献.
量化不同消费者群体和环境条件中度的模式.
为了评估季节性,养特征和气候对 allochthony 的影响.

主要方法:

文学综合和现有关于河流沿岸元生态系统研究的元分析.
在各种生物体中量化 allochthony (外部资源消耗).
基于季节性,养特征和气候,分析了基于季节性,养特征和气候的异常变化.

主要成果:

发现,尽管补贴流动不对称,河流和河岸消费者分配是相当的.
鱼类的度表现出显著的季节性变化,在夏季/秋季高于冬季/春季.
在水生无脊椎动物,鱼类和陆地关节动物中,Allochthony随着养特征而变化,但不是陆地脊椎动物.
与热带气候相比,在干旱气候中,水生无脊椎动物的度更高,而鱼类的度没有显示这种模式.

结论:

超生态系统的连接至关重要,但容易受到全球变化的破坏.
了解区分模式对于预测生态系统对环境变化的反应至关重要.
季节性和气候驱动的变化凸显了生态系统对全球变化的复杂反应.

关键词:

分配给一个荣誉的.水上与陆地之间的联系.消费者消费者消费者消费者消费者饮食饮食饮食饮食食品网食品网是一个食物网.这是一个超生态系统.资源补贴资源补贴河边的河边人河边人河流河流河流河流

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