uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/237d51507c585c12b0ed336935d0adc9 Wyatt Oswald https://orcid.org/0000-0001-6217-1831 David Foster https://orcid.org/0000-0003-1171-3762 Elaine Doughty Researcher Dana MacDonald Researcher 2023 English

Analyses of pollen, charcoal, and organic content in a lake-sediment core from Wildwood Lake, Long Island, New York, provide insights into the ecological and environmental history of this region. The early-Holocene interval of the record (~9800-8800 cal. a BP) indicates the presence of Pinus rigida-Quercus ilicifolia woodlands with high fire activity. A layer of sandy sediment dating to 9200 cal. a BP may reflect a brief period of reduced water depth, consistent with widespread evidence for cold, dry conditions at that time. Two other sandy layers, bracketed by 14C dates, represent a sedimentary hiatus from ~8800 to 4500 cal. a BP. This discontinuity may reflect the removal of some sediment during brief periods of reduced water depth at 5300 and 4600 cal. a BP. In the upper portion of the record (before 4500 cal. a BP), subtle changes at ~3000 cal. a BP indicate declining prevalence of Quercus-Fagus-Carya forests and increasing abundance of Pinus rigida, perhaps due to reduced summer precipitation. Elevated percentages of herbaceous taxa in the uppermost sediments represent European agricultural activities. However, unlike charcoal records from southern New England, fire activity does not increase dramatically with European settlement. These findings indicate that present-day Pinus rigida-Quercus ilicifolia woodlands on eastern Long Island are not a legacy of recent, anthropogenic disturbances.

charcoal fires lakes paleoecology pollen sediments vegetation dynamics LTER controlled vocabulary disturbance 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=hf189 Wildwood Lake (Long Island NY). Coordinates based on WGS84 datum. -72.6733 -72.6733 +40.892 +40.892 6 6 meter -2500 2010 genus Betula species spp. birch genus Carya species spp. hickory genus Fagus species spp. beech genus Picea species spp. spruce genus Pinus species spp. pine genus Quercus species spp. oak genus Tsuga species spp. hemlock complete 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

For detailed methods, please see: Oswald, W. W., Foster, D. R., Doughty, E., MacDonald, D. 2010. A record of Holocene environmental and ecological changes from Wildwood Lake, Long Island, New York. Journal of Quaternary Science 25: 967-974.

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. hf189-01-pollen-Wildwood.csv pollen hf189-01-pollen-Wildwood.csv 257869 a4bf1983951a82ae4a5adc99aebaf9c4 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p18/hf189/hf189-01-pollen-Wildwood.csv cal.age.bp calibrated age before present in years number 0.001 real NA missing value depth depth in sediment column centimeter 1 whole NA missing value taxa name of taxa name of taxa count number of pollen grains or spores of individual taxa number 0.5 real NA missing value 9880 hf189-02-age-Wildwood.csv age hf189-02-age-Wildwood.csv 764 7da491a835e226d7dfe636a4e62aa480 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p18/hf189/hf189-02-age-Wildwood.csv depth depth in sediment column centimeter 1 whole NA missing value cal.age.bp calibrated age before present (years; present=1950 AD) number 1 whole NA missing value notes notes and methods of age determination; 210Pb=lead-210 dating; 14C=radiocarbon dating; Euro settlement=determined by rise in abundance of weedy and agricultural taxa notes and methods of age determination; 210Pb=lead-210 dating; 14C=radiocarbon dating; Euro settlement=determined by rise in abundance of weedy and agricultural taxa c14 un-calibrated radiocarbon years number 1 whole NA missing value error analytical error for 14C dates in years number 1 whole NA missing value 24 hf189-03-macrochar-Wildwood.csv macrochar hf189-03-macrochar-Wildwood.csv 801 60012eec9938063e9ce140941b8b322a 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p18/hf189/hf189-03-macrochar-Wildwood.csv depth depth in sediment column centimeter 1 whole NA missing value pieces.cc number of macroscopic (greater than 180 microns) per cubic centimeter numberPerCentimeterCubed 1 whole NA missing value 101 hf189-04-microchar-Wildwood.csv microchar hf189-04-microchar-Wildwood.csv 2256 4d84b48b02c19be260d9f439713ab470 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p18/hf189/hf189-04-microchar-Wildwood.csv depth depth in sediment column centimeter 1 whole NA missing value char.area area of charcoal pieces greater than 10 and less than 180 microns in length squareMillimeters 0.00001 real NA missing value exotic.char number of exotic marker grains encountered during charcoal analysis number 1 whole NA missing value pollen.sum number of pollen grains and spores of upland taxa encountered during pollen analysis number 0.1 real NA missing value exotic.pollen number of exotic maker grains encountered during pollen analysis number 1 whole NA missing value exotic.added total number of exotic marker grains added to sample numberPerCentimeterCubed 1 whole NA missing value sed.vol volume of the sediment samples centimeterCubed 1 whole NA missing value 59 historical paleological numberPerCentimeterCubed