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过去40年的土地利用变化解释了关节动物社区特征的变化
Carlos Martínez-Núñez1,2, Martin M Gossner3,4, Corina Maurer1,4
1Agroecology and Environment, Zürich, Switzerland.
The Journal of animal ecology
|March 21, 2024
概括
人类土地使用的变化显著改变了关节动物群落的功能特征,影响了生态系统的角色. 这项研究追踪了40年来甲虫和蜘蛛的体型,活动,耐旱性和分散.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 动物学 动物学
背景情况:
- 人类活动对关节动物群落有深远的影响,但对功能特征的长期影响仍然不太了解.
- 评估这些变化对于预测生态系统后果和为保护战略提供信息至关重要.
- 现有的知识差距阻碍了对人类对生物多样性的影响的准确预测.
研究的目的:
- 为了研究长期变化,在功能性重要特征的甲虫和蜘蛛.
- 分析土地使用类型和变化的影响 (城市化,木质植被丧失) 在约40年的关节动物社区特征上.
- 提供对关节动物特征组成的全球变化驱动因素的全面评估.
主要方法:
- 利用了一大数据集,包括877个物种中的173万个个体.
- 研究了四个关键特征:身体大小,活动周期持续时间,耐旱性和分散能力.
- 分析了在不同土地使用和响应瑞士景观变化的情况下,虫和蜘蛛群体的特征转移.
主要成果:
- 在所有土地用途中,Carabid社区的平均体型呈现下降,特别是在耕地.
- 在大多数土地使用类型中,蜘蛛群体表现出活动周期长度和干旱耐受性降低.
- 城市化导致蜘蛛的扩散能力增加,有利于具有较长活动周期的体型较大的蜘蛛. 森林地区的消失使鱼的特征转向了更大的体型,更高的干旱耐受性和减少的分散.
结论:
- 长期的土地使用变化显然改变了黑和蜘蛛群体的关键功能特征.
- 检测到的特征转移对关节动物在生态系统中的功能角色有重大影响.
- 这项研究强调了人类活动对无脊椎动物生物多样性和生态系统运作的普遍影响.
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