Apr 29, 2020

Taxonomic, temporal, and spatial variation in the dynamics of High-Arctic arthropod populations

BioRxiv : the Preprint Server for Biology
Toke Thomas H&oslashyeN. M. Schmidt

Abstract

Time-series data on arthropod populations are critical for understanding the magnitude, direction, and drivers of abundance changes. However, most arthropod monitoring programs are short-lived and limited in taxonomic resolution and spatial extent. Consequently, variation in population dynamics among taxa and habitats remains poorly understood. Monitoring data from the Arctic are particularly underrepresented, yet important to assessments of species abundance changes because many anthropogenic drivers of change that are present in other regions are absent in polar regions. Here, we utilise 24 years of abundance data from Zackenberg in High-Arctic Greenland, which is the longest running Arctic arthropod monitoring program, to study temporal trends in abundance. Despite a strong warming signal in air temperature, we only find evidence of weak temporal trends in arthropod abundances across most taxa. These trends are more pronounced in the most recent decade, with change point analyses suggesting distinct non-linear dynamics within some functional groups such as predators and detritivores. Although the abundances of many taxa were correlated, we detected both positive and negative correlations, suggesting that multiple processes a...Continue Reading

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Mentioned in this Paper

Calcinus elegans
Cyartonema elegans
Study
Coleonyx elegans
Cestrum elegans
Clarkia unguiculata
Clathrulina elegans
Cardioglossa elegans
Cymbella elegans
Exons

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