Palaeoendemic invertebrates weakly reflect palaeoendemic plants across a 52-year-old fire boundary

IF 1.6 4区 环境科学与生态学 Q3 ECOLOGY
Austral Ecology Pub Date : 2024-09-03 DOI:10.1111/aec.13576
Shasta C. Henry, Jamie B. Kirkpatrick, Peter B. McQuillan
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Abstract

If palaeoendemic invertebrates depend on palaeoendemic plants, and the latter are threatened by an increase in fire incidence, there is a possibility of an extinction cascade. We test whether there is co-occurrence of palaeoendemic plants and invertebrates in the proximity of a 52-year-old fire boundary in subalpine Tasmania, Australia. We used 2 × 2 m quadrats to record the incidence and cover of vascular plants and trapped invertebrates at each of these 33 sites in six time periods using an alpine Malaise trap and a CD sticky trap. The number of co-occurrences of palaeoendemic plant taxa with palaeoendemic invertebrate taxa was greater than expected by chance (p = 0.020), but many palaeoendemic invertebrates co-occurred with non-palaeoendemic plants. Some of the palaeoendemic invertebrate taxa that were associated with palaeoendemic plants were monophagous, while others were associated with environmental conditions created by a long absence of fire. Many may be threatened if increasing fire incidence destroys vegetation dominated by palaeoendemic plants.

Abstract Image

古特有无脊椎动物微弱地反映了跨越 52 年火灾边界的古特有植物
如果古特有无脊椎动物依赖于古特有植物,而后者又受到火灾发生率增加的威胁,那么就有可能出现一连串的灭绝。我们测试了在澳大利亚塔斯马尼亚亚高山地区有 52 年历史的火灾边界附近是否存在古特有植物和无脊椎动物。我们使用 2 × 2 米的四方形网格,使用高山马来氏诱捕器和光盘粘性诱捕器,在六个时间段内记录了这 33 个地点的维管植物和被诱捕无脊椎动物的发生率和覆盖率。古特有植物类群与古特有无脊椎动物类群的共生数量高于预期(p = 0.020),但许多古特有无脊椎动物与非古特有植物共生。一些与古特有植物相关的古特有无脊椎动物类群是单食性的,而另一些则与长期无火造成的环境条件有关。如果火灾发生率的增加破坏了以古特有植物为主的植被,许多无脊椎动物类群可能会受到威胁。
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来源期刊
Austral Ecology
Austral Ecology 环境科学-生态学
CiteScore
2.90
自引率
6.70%
发文量
117
审稿时长
12-24 weeks
期刊介绍: Austral Ecology is the premier journal for basic and applied ecology in the Southern Hemisphere. As the official Journal of The Ecological Society of Australia (ESA), Austral Ecology addresses the commonality between ecosystems in Australia and many parts of southern Africa, South America, New Zealand and Oceania. For example many species in the unique biotas of these regions share common Gondwana ancestors. ESA''s aim is to publish innovative research to encourage the sharing of information and experiences that enrich the understanding of the ecology of the Southern Hemisphere. Austral Ecology involves an editorial board with representatives from Australia, South Africa, New Zealand, Brazil and Argentina. These representatives provide expert opinions, access to qualified reviewers and act as a focus for attracting a wide range of contributions from countries across the region. Austral Ecology publishes original papers describing experimental, observational or theoretical studies on terrestrial, marine or freshwater systems, which are considered without taxonomic bias. Special thematic issues are published regularly, including symposia on the ecology of estuaries and soft sediment habitats, freshwater systems and coral reef fish.
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