野生牛和马的空间使用塑造了食物回归地区的植被结构
Jeppe Å Kristensen1,2,3,4, Robert Buitenwerf1,3, Emilio Berti5,6
1Center for Ecological Dynamics in a Novel Biosphere (ECONOVO), Department of Biology, Aarhus University, Aarhus C, Denmark.
概括
重生地区的大型食草动物,如牛和马,有助于控制植被生长. 由于植被密度和连接性,它们的息地偏好,保持开放的景观和保护生物多样性.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 景观生态学 景观生态学
背景情况:
- 欧洲的恢复努力经常引入像牛 (Bos taurus) 和马 (Equus ferus caballus) 这样的食草动物,以管理植被继承并支持需要光的物种.
- 了解动物息地偏好如何影响景观尺度上的植被结构,对于有效的复原至关重要.
研究的目的:
- 为了调查在丹麦的回归野区内GPS领带的马和牛中空间使用偏好的驱动因素.
- 利用卫星数据评估动物空间利用对植被生产率和景观规模异质性的影响.
- 评估地形,植被特征和人工基础设施在塑造草食动物分布中的作用.
主要方法:
- 使用来自牛和马的GPS跟踪数据,采用空间偏好建模.
- 分析了来自卫星的植被生产率指数时间序列,以与动物空间使用模式相关联.
- 该研究检查了植物变化和空间变化,以应对食草动物活动,包括在严重干旱期间.
主要成果:
- 植物密度和景观连接性被确定为牛和马的空间使用的关键预测因素.
- 这两种物种都表现出对人工庇护的强烈吸引力,突出了基础设施的影响.
- 草食动物密集使用的地区表现出较慢的植被继承和干旱后植被绿色的更强性,保持开放条件.
结论:
- 在近乎自然的条件下,连续放牧有效地限制了景观规模的植被密集化.
- 草食动物的空间使用模式受到资源可用性和景观特征的影响,在保持景观异质性方面发挥着重要作用.
- 人工基础设施的战略布局和对各种植物性功能类型的考虑可以优化重新野生化地区的生态系统管理.
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