Data gap or biodiversity gap? Evaluating apparent spatial biases in community science observations of Odonata in the east-central United States

数据缺口还是生物多样性缺口?评估美国中东部蜻蜓目昆虫群落科学观测中明显的空间偏差

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Abstract

Odonates (dragonflies and damselflies) have become popular study organisms for insect-based climate studies, due to the taxon's strong sensitivity to environmental conditions, and an enthusiastic following by community scientists due to their charismatic appearance and size. Where formal records of this taxon can be limited, public efforts have provided nearly 1,500,000 open-sourced odonate records through online databases, making real-time spatio-temporal monitoring more feasible. While these databases can be extensive, concerns regarding these public endeavors have arisen from a variety of sources: records may be biased by human factors (ex: density, technological access) which may cause erroneous interpretations. Indeed, records of odonates in the east-central US documented in the popular database iNaturalist bear striking patterns corresponding to political boundaries and other human activities. We conducted a 'ground-truthing' study using a structured sampling method to examine these patterns in an area where community science reports indicated variable abundance, richness, and diversity which appeared to be linked to observation biases. Our observations were largely consistent with patterns recorded by community scientists, suggesting these databases were indeed capturing representative biological trends and raising further questions about environmental drivers in the observed data gaps.

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