Surveys of Pollinators on Chestnuts (Castanea) in New York Orchards

Sampling event
Latest version published by Vermont Center for Ecostudies on Feb 26, 2024 Vermont Center for Ecostudies
Publication date:
26 February 2024
CC0 1.0

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Pollinator surveys of chestnut orchards in New York State, USA in 2023. Surveys consisted of timed sweep-netting events on fertile male catkins of wild-type American chestnut (Castanea dentata), hybrid American chestnut, and/or Chinese chestnut (C. mollissima). Specimens were individually packaged when collected, and pollen samples were extracted in the lab from any specimens that had pollen on their bodies. Untimed pilot surveys occurred in July 2022.

Data Records

The data in this sampling event resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 6 records.

1 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.

Event (core)

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How to cite

Researchers should cite this work as follows:

Jacobson M (2024). Surveys of Pollinators on Chestnuts (Castanea) in New York Orchards. Version 1.2. Vermont Center for Ecostudies. Samplingevent dataset.


Researchers should respect the following rights statement:

The publisher and rights holder of this work is Vermont Center for Ecostudies. To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: f2fe41e1-f235-423f-aba5-82c39714dc3f.  Vermont Center for Ecostudies publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF-US.


Samplingevent; Specimen


Molly Jacobson
  • Metadata Provider
  • Originator
  • Point Of Contact
Native Pollinator Ecologist
SUNY ESF Restoration Science Center
Spencer Hardy
  • Publisher
Vermont Center for Ecostudies

Geographic Coverage

New York State, USA

Bounding Coordinates South West [40.98, -79.98], North East [45.46, -73.213]

Taxonomic Coverage


Family Halictidae, Andrenidae, Calliphoridae, Anthomyiidae, Tabanidae, Stratiomyidae, Erebidae, Tachinidae, Nymphalidae, Hesperiidae, Mordellidae, Syrphidae, Colletidae, Lycaenidae, Cleridae, Cerambycidae, Cantharidae, Scarabaeidae, Crabronidae, Vespidae, Sarcophagidae, Apidae

Temporal Coverage

Start Date / End Date 2022-07-06 / 2023-07-19

Sampling Methods

Sites were surveyed once in 2023, with untimed pilot sampling occurring once at the Sherburne orchard in 2022. Ten 1-minute sweeps were performed on chestnut catkins to collect insect flower visitors. Insects caught in net sweeps were individually packaged, labeled, and then frozen. Female chestnut flowers were observed for five minutes each to detect any insect visitors. Pollen was scraped off of specimens in the lab and preserved on microscope slides for pollen grain identification. All specimens were then pinned and labeled.

Study Extent Sampling occurred in chestnut orchards in New York State during the male catkin flowering period in July.
Quality Control Non-Dialictus bee specimens, flies, beetles, wasps, and lepidopterans were identified by Molly Jacobson. Lasioglossum (Dialictus) specimens were identified by Sam Droege (USGS Native Bee Inventory & Monitoring Lab). Andrena of note and Hylaeus specimens were verified by Sam Droege. Specimens and pollen samples currently housed at the SUNY College of Environmental Science and Forestry.

Method step description:

  1. Sampling dates were determined by communication with site managers about site-specific chestnut flowering periods. Chestnut flowers were swept in one-minute increments on as many separate trees as were available. After sweeps were completed, female flowers were located and observed by M. Jacobson and field technician for any insect visitors. Specimens were chilled in field and taken back to lab and frozen. Pollen was extracted from specimens where possible and then all specimens were washed, dried (for bees), and pinned. Pollen samples were examined and identified by Hannah Pilkey (American Chestnut Research and Restoration Project at SUNY ESF).

Collection Data

Collection Name SUNY College of Environmental Science and Forestry
Specimen preservation methods Pinned

Additional Metadata

Alternative Identifiers f2fe41e1-f235-423f-aba5-82c39714dc3f