Wallon Sophie, Tsafack Noelline, Pozsgai Gabor, Melo Catarina, Borges Paulo A V, Elias Rui
cE3c- Centre for Ecology, Evolution and Environmental Changes/Azorean Biodiversity Group, CHANGE - Global Change and Sustainability Institute, School of Agricultural and Environmental Sciences, University of the Azores, Rua Capitão João d´Ávila, Pico da Urze, 9700-042, Angra do Heroísmo, Azores, Portugal cE3c- Centre for Ecology, Evolution and Environmental Changes/Azorean Biodiversity Group, CHANGE - Global Change and Sustainability Institute, School of Agricultural and Environmental Sciences, University of the Azores, Rua Capitão João d´Ávila, Pico da Urze, 9700-042 Angra do Heroísmo, Azores Portugal.
Regional Secretariat of Environment and Climate Change, Project LIFE BEETLES (LIFE 18NAT/PT/000864), Rua do Galo n118, 9700-040, Angra do Heroísmo, Azores, Portugal Regional Secretariat of Environment and Climate Change, Project LIFE BEETLES (LIFE 18NAT/PT/000864), Rua do Galo n118, 9700-040 Angra do Heroísmo, Azores Portugal.
Biodivers Data J. 2023 Oct 5;11:e107385. doi: 10.3897/BDJ.11.e107385. eCollection 2023.
The impact of climate change on islands is expected to cause dramatic consequences on native biodiversity. However, limited data are available for arthropod communities in island agroecosystems. In this study, we simulate a small-scale climatic change (average of +1.2°C), using Open Top Chambers (OTCs) in forage crops in the Azores Archipelago (Portugal) and test the responses of arthropod communities associated with intensively-managed pastures. At three sites, twenty 1 x 1 m plots were established: 10 treatment plots with OTCs and 10 control plots. Arthropods were sampled with pitfall traps on two sampling events (winter and summer of 2020). When considering all species collected, arthropods' abundance was lower in OTCs. Specific taxa, namely spiders and beetles, showed a fast response to the OTCs' presence. The assemblage of non-indigenous spiders well adapted to pastures showed a significant difference in diversity with a slightly greater richness, but lower abundance inside the warmer plots. However, the presence of OTCs resulted in a decrease in beetle richness and abundance. This decline may be attributed to the multiple effects of warming. Therefore, it is imperative to conduct further investigations to elucidate the ecological processes that underlie the observed patterns.
气候变化对岛屿的影响预计将给当地生物多样性带来巨大后果。然而，关于岛屿农业生态系统中节肢动物群落的数据有限。在本研究中，我们在葡萄牙亚速尔群岛的饲料作物中使用开顶式气室（OTC）模拟小规模气候变化（平均升温1.2°C），并测试与集约管理牧场相关的节肢动物群落的反应。在三个地点设立了20个1×1米的样地：10个设置OTC的处理样地和10个对照样地。在2020年的两次采样活动（冬季和夏季）中，用陷阱诱捕器对节肢动物进行采样。当考虑所有采集到的物种时，OTC样地中节肢动物的丰度较低。特定类群，即蜘蛛和甲虫，对OTC的存在表现出快速反应。适应牧场的非本地蜘蛛组合在多样性上存在显著差异，温暖样地内的丰富度略高，但丰度较低。然而，OTC的存在导致甲虫的丰富度和丰度下降。这种下降可能归因于变暖的多种影响。因此，必须进行进一步调查，以阐明观察到的模式背后的生态过程。
