uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/e17902bafcbf65f02834b4d9fd5d52a3 Evan Preisser https://orcid.org/0000-0002-8737-5619 Katharine Harrison Caroline Cohen Researcher 2023 English

Black gum (Nyssa sylvatica) is amongst the latest blooming canopy species to produce vast numbers of flowers and abundant nectar and pollen within forests of the Northeastern United States, a position previously held by the American Chestnut (Castanea dentata). Prior research indicates N. sylvatica is insect pollinated and wild bees have been observed visiting flowers; we are unaware, however, of any detailed surveys and/or characterization of the Nyssa-associated wild bee community in the Northeastern United States. Wild bee species frequent the canopy from early to late spring, presumably to forage, prior to being found in blooming crops such as apple and strawberry later in the season. The late bloom time of N. sylvatica (in early June) may extend floral resource availability in the temperate forest canopy and support forest-associated wild bee communities prior to the bloom of summer-flowering plant species.

arthropods canopies community composition insects phenology species diversity LTER controlled vocabulary populations LTER core area Harvard Forest HFR LTER USA HFR default

This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.

Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html CC0-1.0 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf*** Prospect Hill Tract (Harvard Forest). Coordinates based on WGS84 datum. -72.182592 -72.182193 +42.537848 +42.537514 355 380 meter 2021 2021 genus Nyssa species sylvatica black gum family Andrenidae family Apidae family Halictidae family Megachilidae ongoing Information Manager Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 hf-im@lists.fas.harvard.edu Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu

In order to efficiently sample the bee community that utilizes N. sylvatica floral resources, we used an indirect collection method, insect traps. We chose both flight-intercept traps, which collect insects that fly into clear vanes and drop into a collection bucket filled with fluid, and bowl traps, which attract bees due to color (white, blue, and yellow) and then trap them in collecting fluid. Both trap types are used frequently in bee surveys and by using both, we hoped to collect a greater diversity of bee species. Nyssa sylvatica trees were identified and selected in early spring 2021 within the Black Gum Swamp located in Harvard Forest (Petersham, Massachusetts). The selected trees were monitored as the season progressed and as bloom approached, we deployed one set of paired canopy and ground traps per tree (one set is a flight-intercept trap along with one white, one yellow, and one blue bowl traps). There were a total of eight traps per tree (two flight-intercept traps and six bowl traps). We selected three trees in spring 2021, two female trees and one male. Prior to the onset of bloom, the flight-intercept traps and bowl traps were deployed on each of the three trees. At the onset of bloom, 6/10/21, we checked each trap, collected any trapped specimens, added additional collection fluid, and re-deployed the traps. At the end of bloom, 6/16/21, we again collected specimens and removed the traps from the trees. Specimens were cleaned and pinned within one day of collection. We are in the process of identifying each specimen to genus and species. The very low number of collected specimens belies the fact that we observed many bees visiting Nyssa flowers within the canopy. We hypothesize that direct collection of bees within the canopy will yield a much greater number of total specimens.

Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu https://ror.org/059cpzx98 pointOfContact The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210. hf425-01-pollinator-survey.csv pollinator survey hf425-01-pollinator-survey.csv 139 79ccb64a13d6f9b9a408cded977bd175 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p42/hf425/hf425-01-pollinator-survey.csv pollinatorFam bee family bee family NA missing value lowFLtrap number of bees in ground level flight line traps number 1 whole NA missing value lowBowlTrap number of bees in ground level bowl traps number 1 whole NA missing value highFLtrap number of bees in canopy flight line traps number 1 whole NA missing value highBowlTrap number of bees in canopy bowl traps number 1 whole NA missing value 4 biodiversity conservation community regional short-term measurement