Multi-trophic invasion resistance in Hawaii: Bioacoustics, field surveys, and airborne remote sensing
Multi-trophic invasion resistance in Hawaii: Bioacoustics, field surveys, and airborne remote sensing
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DOI：
10.1890/07-0004.1
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发表时间：
2007-12-01
影响因子：
5
通讯作者：
Martin, Roberta E.
中科院分区：
文献类型：
--
作者：
Boelman, Natalie T.;Asner, Gregory P.;Martin, Roberta E.
我们使用机载成像光谱和扫描光探测和测距（LiDAR），沿着生物声学记录，以确定植物物种入侵如何影响鸟类丰度和群落组成的夏威夷山下生态系统的范围。鸟类丰度和本地外来鸟类的比例最高的栖息地，最高的树冠覆盖和高度。比较bioprophically等效的网站，占主导地位的本地Metrosideros polymorpha树木主办更大的本地鸟类群落比混合的Metrosideros和入侵树莫雷拉法亚。一项多营养分析强烈表明，本土鸟类对莫雷拉树和外来鸟类的入侵提供了生物抵抗力，从而减缓了破坏夏威夷本土生态系统功能的入侵“融化”。
We used airborne imaging spectroscopy and scanning light detection and ranging (LiDAR), along with bioacoustic recordings, to determine how a plant species invasion affects avian abundance and community composition across a range of Hawaiian submontane ecosystems. Total avian abundance and the ratio of native to exotic avifauna were highest in habitats with the highest canopy cover and height. Comparing biophysically equivalent sites, stands dominated by native Metrosideros polymorpha trees hosted larger native avian communities than did mixed stands of Metrosideros and the invasive tree Morella faya. A multi-trophic analysis strongly suggests that native avifauna provide biotic resistance against the invasion of Morella trees and exotic birds, thus slowing invasion "meltdowns'' that disrupt the functioning of native Hawaiian ecosystems.