Abstract
AbstractMost of arthropod biodiversity is unknown to science. Consequently, it has been unclear whether insect communities around the world are dominated by the same or different taxa. This question can be answered through standardized sampling of biodiversity followed by estimation of species diversity and community composition with DNA barcodes. Here this approach is applied to flying insects sampled by 39 Malaise traps placed in five biogeographic regions, eight countries and numerous habitats (>225,000 specimens belonging to >25,000 species in 458 families). We find that 20 insect families (10 belonging to Diptera) account for >50% of local species diversity regardless of clade age, continent, climatic region and habitat type. Consistent differences in family-level dominance explain two-thirds of variation in community composition despite massive levels of species turnover, with most species (>97%) in the top 20 families encountered at a single site only. Alarmingly, the same families that dominate insect diversity are ‘dark taxa’ in that they suffer from extreme taxonomic neglect, with little signs of increasing activities in recent years. Taxonomic neglect tends to increase with diversity and decrease with body size. Identifying and tackling the diversity of ‘dark taxa’ with scalable techniques emerge as urgent priorities in biodiversity science.
Funder
European Research Council
Publisher
Springer Science and Business Media LLC
Subject
Ecology,Ecology, Evolution, Behavior and Systematics
Reference65 articles.
1. Summary for policymakers of the global assessment report on biodiversity and ecosystem services of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services. Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (eds Díaz, S. et al.) (IPBES Secretariat, 2019); https://doi.org/10.5281/zenodo.3553579
2. The Global Risks Report 2020. World Economic Forum https://www.weforum.org/reports/the-global-risks-report-2020 (2020).
3. An eco-wakening: Measuring global awareness, engagement and action for nature. Economist Intelligence Unit; https://impact.economist.com/sustainability/ecosystems-resources/an-eco-wakening-measuring-global-awareness-engagement-and-action-for-nature (2021).
4. Rohr, J. R., Mahan, C. G. & Kim, K. C. Developing a monitoring program for invertebrates: guidelines and a case study. Conserv. Biol. 21, 422–433 (2007).
5. Wilson, E. O. Biodiversity research requires more boots on the ground. Nat. Ecol. Evol. 1, 1590–1591 (2017).
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