延时照相机提高了我们对高山地区无脊椎动物活动的了解

IF 1.9 3区 环境科学与生态学 Q3 ECOLOGY
Aaron Bertoia, Tara Murray, Bruce Robertson, Joanna Monks
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Time-lapse cameras improve our understanding of invertebrate activity in the alpine zone
: Understanding when a species is active in its’ environment is essential when designing inventory and monitoring protocols, especially for ectotherms whose activity depends on local weather conditions. The New Zealand alpine zone hosts a diverse native assemblage of invertebrates that are poorly understood yet likely to face an increasing number of threats, particularly associated with climate change and the range expansion of introduced pests. Large-bodied flightless invertebrates are particularily vulnerable to introduced predators, like mice and stoats, which have decimated native species at lower elevations. Using trail cameras, we aimed to understand what conditions and times of the summer field season (spring–autumn) are optimal for monitoring large-bodied alpine invertebrates in the Homer and Gertrude valleys, Fiordland, New Zealand, from late austral spring to late autumn (2020/2021). Beetles (Coleoptera), wētā (Orthoptera), and spiders (Araneae) were the three most common taxonomic groups detected at our sites. The activity of all three groups was significantly influenced by mean hourly temperature. Ninety-five per cent of beetle observations occurred when temperatures ranged from 5.9–12.6°C, while 95% of wētā observations occurred when temperatures were between 6.0–12.6°C. Spiders were active across a broader range of temperatures, with 95% of observations occurring when ground temperatures were between 5.4–13.0°C. The activity of all three groups was also influenced by the time of year. Beetles were observed more often in late spring, wētā in early summer, and spiders in mid-summer. The activity of spiders and beetles, but not wētā, was negatively correlated with precipitation. These results suggest optimal monitoring periods for wētā, beetles, and spiders differ. Still, if the objective is to monitor a range of invertebrates simultaneously, we recommend that surveys occur in spring and mid-summer during nights when temperatures are higher than 5.4°C with little to no rain.
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来源期刊
New Zealand Journal of Ecology
New Zealand Journal of Ecology 环境科学-生态学
CiteScore
3.00
自引率
12.50%
发文量
35
审稿时长
>36 weeks
期刊介绍: The New Zealand Journal of Ecology is a biannual peer-reviewed journal publishing ecological research relevant to New Zealand/Aotearoa and the South Pacific. It has been published since 1952 (as a 1952 issue of New Zealand Science Review and as the Proceedings of the New Zealand Ecological Society until 1977). The Journal is published by the New Zealand Ecological Society (Inc.), and is covered by Current Contents/Agriculture, Biology and Environmental Science, GEOBASE, and Geo Abstracts.
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