Multiscale analysis of canopy arthropod diversity in a volcanically fragmented landscape
Multiscale analysis of canopy arthropod diversity in a volcanically fragmented landscape
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火山破碎景观中冠层节肢动物多样性的多尺度分析
DOI：
10.1002/ecs2.2653
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发表时间：
2019
期刊：
影响因子：
2.7
通讯作者：
Gruner, Daniel S.
中科院分区：
文献类型：
--
作者：
Tielens, Elske K.;Neel, Maile N.;Leopold, Devin R.;Giardina, Christian P.;Gruner, Daniel S.
栖息地破碎化导致栖息地丧失和隔离增加是全球物种减少的主要驱动因素。栖息地的隔离和连通性因尺度而异，了解连通性如何影响生物多样性可能具有挑战性，因为相关尺度取决于所涉及的类群。多尺度分析可以提供跨空间尺度的生物多样性模式的洞察力时，传播能力的信息是不可用的，特别是在社区层面的研究集中在多个类群。在这项研究中，我们研究节肢动物多样性，斑块面积和连通性之间的关系，使用多尺度方法。我们利用夏威夷岛上的一个自然实验，历史上的火山活动已经将连续的原始森林转变为熔岩基质和离散的森林斑块。这种景观的补丁已经持续了150年，我们选择了10,000公顷的863补丁，使用图论方法分析景观连接。我们收集了节肢动物样品从Metrosideros polymorphatree冠层在34个森林斑块在多年。我们分析了节肢动物多样性与面积的关系，以及与连接跨增加尺度，或扩散阈值距离。与成熟的生态学理论以及之前在这个系统中对鸟类和真菌的研究相反，我们没有发现对典型物种-面积关系的支持。接下来，我们计算了空间尺度上的连通性，发现在小尺度上具有较高连通性的香农多样性较低，但在增加扩散阈值距离时没有影响。我们研究了景观结构，发现所有的栖息地斑块连接成三个子网在350米的阈值距离。所有的补丁连接在700米的阈值距离，表明结构扩散限制只在小尺度上。我们的研究结果表明，在该系统中，冠层节肢动物的扩散不限于影响土壤真菌和鸟类的尺度。相反，夏威夷冠层节肢动物可能会认为景观作为一个连接的区域，离散的森林斑块和早期演替矩阵贡献的资源，在空间上不同的栖息地质量。我们主张多尺度方法的实用性，以及在持续数百年的支离破碎的景观中检查生物多样性维护的重要性。
Habitat fragmentation resulting in habitat loss and increased isolation is a dominant driver of global species declines. Habitat isolation and connectivity vary across scales, and understanding how connectivity affects biodiversity can be challenging because the relevant scale depends on the taxa involved. A multiscale analysis can provide insight in biodiversity patterns across spatial scale when information on dispersal ability is not available, in particular for community‐level studies focusing on multiple taxa. In this study, we examine the relationship between arthropod diversity, patch area, and connectivity using a multiscale approach. We make use of a natural experiment on Hawai‘i Island, where historic volcanic activity has transformed contiguous native forests to lava matrix and discrete forest patches. This landscape of patches has persisted for 150 yr, and we selected 10,000 ha consisting of 863 patches to analyze landscape connectivity using a graph theory approach. We collected arthropod samples fromMetrosideros polymorphatree canopies in 34 forest patches during multiple years. We analyzed the relationship of arthropod diversity with area, as well as with connectivity across increasing scales, or dispersal threshold distances. In contrast to well‐established ecological theory as well as prior work on birds and fungi in this system, we did not find support for a canonical species–area relationship. Next, we calculated connectivity across spatial scales and found lower Shannon diversity with higher connectivity at small scales, but no effect at increased dispersal threshold distances. We examined the landscape structure and found all habitat patches connected into three subnetworks at a 350 m threshold distance. All patches were connected at 700 m threshold distance, indicating structural dispersal limitation only at small scales. Our findings suggest that canopy arthropods are not dispersal limited at scales shown to impact both soil fungi and birds in this system. Instead, Hawaiian canopy arthropods may perceive the landscape as a connected area where discrete forest patches and the early‐successional matrix contribute resources that vary spatially with regard to habitat quality. We argue for the utility of multiscale approaches, and the importance of examining maintenance of biodiversity in fragmented landscapes that persist for hundreds of years.
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影响因子：
13.6
作者：
Haddad NM;Brudvig LA;Clobert J;Davies KF;Gonzalez A;Holt RD;Lovejoy TE;Sexton JO;Austin MP;Collins CD;Cook WM;Damschen EI;Ewers RM;Foster BL;Jenkins CN;King AJ;Laurance WF;Levey DJ;Margules CR;Melbourne BA;Nicholls AO;Orrock JL;Song DX;Townshend JR
通讯作者：
Townshend JR
资源互补以及昆虫草食动物对栖息地面积和破碎化的响应
影响因子：
2.7
作者：
Kyle J. Haynes;T. Diekötter;T. O. Crist
通讯作者：
T. O. Crist
影响因子：
6.3
作者：
Cagnolo, Luciano;Valladares, Graciela;Zak, Marcelo
通讯作者：
Zak, Marcelo
影响因子：
6.1
作者：
Kennedy, Christina M.;Marra, Peter P.;Neel, Maile C.
通讯作者：
Neel, Maile C.
代表连通性：根据面积和连通性量化有效栖息地的可用性，以进行保护状态评估和恢复
影响因子：
2.7
作者：
M. Neel;Hayley R. Tumas;Brittany W. Marsden
通讯作者：
Brittany W. Marsden