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John S. Ascher

National University of Singapore · SG
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Area of research
Ecology, Evolution, Behavior and Systematics · Insect Science
Research interest
Research interests include Biology, Ecology, Biodiversity, Pollinator, Geography, and Species richness.
h-index
citations
5,212
works
26
NIH funding
primary concept
email

Recent publications

Estimating global bee species richness and taxonomic gaps
Nature Communications 2026cited by 3position: middledoi
Land Use Change Consistently Reduces α‐ But Not β‐ and γ‐Diversity of Bees
Global Change Biology 2025cited by 17position: middledoi
Global patterns and drivers of buzzing bees and poricidal plants
Current Biology 2024cited by 17position: middledoi
Revealing the Baja California Peninsula’s Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila)
Zootaxa 2024cited by 3position: middledoi
Completeness analysis for over 3000 United States bee species identifies persistent data gap
Ecography 2023cited by 56position: middledoi
Opportunities and challenges in Asian bee research and conservation
Biological Conservation 2023cited by 55position: middledoi
A globally synthesised and flagged bee occurrence dataset and cleaning workflow
Scientific Data 2023cited by 46position: middledoi
Two centuries of biodiversity discovery and loss in Singapore
Proceedings of the National Academy of Sciences 2023cited by 27position: middledoi
The benefits of contributing to the citizen science platform iNaturalist as an identifier
PLoS Biology 2022cited by 97position: middledoi
Six steps for building a technological knowledge base for future taxonomic work
National Science Review 2022cited by 11position: middledoi
The taxonomic impediment: a shortage of taxonomists, not the lack of technical approaches
Zoological Journal of the Linnean Society 2021cited by 365position: middledoi
Crop heterogeneity is positively associated with beneficial insect diversity in subtropical farmlands
Journal of Applied Ecology 2021cited by 19position: middledoi
Nectar concentrating behavior by bees (Hymenoptera: Anthophila)
Apidologie 2021cited by 18position: middledoi
Global Patterns and Drivers of Bee Distribution
Current Biology 2020cited by 369position: lastdoi
Taxonomy must engage with new technologies and evolve to face future challenges
Nature Ecology & Evolution 2020cited by 44position: middledoi
Taxonomy based on science is necessary for global conservation
PLoS Biology 2018cited by 258position: middledoi
Dynamic microbiome evolution in social bees
Science Advances 2017cited by 592position: middledoi
Biodiversity conservation gaps in the Brazilian protected areas
Scientific Reports 2017cited by 328position: middledoi
The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history
Zootaxa 2017cited by 79position: middledoi
The city as a refuge for insect pollinators
Conservation Biology 2016cited by 642position: middledoi
The strong influence of collection bias on biodiversity knowledge shortfalls of<scp>B</scp>razilian terrestrial biodiversity
Diversity and Distributions 2016cited by 352position: middledoi
The Allometry of Bee Proboscis Length and Its Uses in Ecology
PLoS ONE 2016cited by 129position: middledoi
Delivery of crop pollination services is an insufficient argument for wild pollinator conservation
Nature Communications 2015cited by 971position: middledoi
The effect of repeated, lethal sampling on wild bee abundance and diversity
Methods in Ecology and Evolution 2015cited by 109position: middledoi
Historical changes in northeastern US bee pollinators related to shared ecological traits
Proceedings of the National Academy of Sciences 2013cited by 564position: middledoi
Documenting Persistence of Most Eastern North American Bee Species (Hymenoptera: Apoidea: Anthophila) to 1990–2009
Journal of the Kansas Entomological Society 2012cited by 41position: middledoi

Grants

No grants ingested yet.

Frequent collaborators

Michael C. Orr · University of Hohenheim6 papers (2020–2026)Alice C. Hughes · Education University of Hong Kong4 papers (2020–2024)Jason Gibbs · Cornell University4 papers (2012–2017)Chao‐Dong Zhu · Nanjing Agricultural University3 papers (2020–2022)Terry Griswold · United States Geological Survey3 papers (2012–2024) · 2 papers (2016–2017)Daniel P. Cariveau · University of Minnesota2 papers (2016–2021) · 2 papers (2016–2017) · 2 papers (2016–2017) · 2 papers (2016–2017)Rachael Winfree · Rutgers, The State University of New Jersey2 papers (2013–2016)Ming Bai · Zhejiang University2 papers (2020–2022)Ígnasi Bartomeus · Estación Biológica de Doñana2 papers (2013–2016) · 2 papers (2020–2022)Molly G. Rightmyer · San Diego Natural History Museum2 papers (2012–2017) · 2 papers (2016–2017) · 2 papers (2020–2022) · 2 papers (2016–2017) · 2 papers (2016–2017) · 2 papers (2016–2017)
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