Stinson, K., Rapp, J., Ahmed, S., Lutz, D., Huish, R., Dufour, B., and Morelli, T.L., 2019, Sap Quality at Study Sites in the Northeast: U.S. Geological Survey data release, https://doi.org/10.5066/P9PF7WF8.
Summary
Maple syrup is produced from the sap of sugar maple collected in the late winter and early spring. Native American tribes have collected and boiled down sap for centuries, and the tapping of maple trees is a cultural touchstone for many people in the northeast and Midwest. Because the tapping season is dependent on weather conditions, there is concern about the sustainability of maple sugaring as climate changes throughout the region. Our research addresses the impact of climate on the quantity and quality of maple sap used to make maple syrup. Sap was sampled at 6 sites across the native range of sugar maple over 2 years as part of the ACERnet collaboration. At each site we sampled 15-25 mature sugar maple trees, and an additional [...]
Summary
Maple syrup is produced from the sap of sugar maple collected in the late winter and early spring. Native American tribes have collected and boiled down sap for centuries, and the tapping of maple trees is a cultural touchstone for many people in the northeast and Midwest. Because the tapping season is dependent on weather conditions, there is concern about the sustainability of maple sugaring as climate changes throughout the region. Our research addresses the impact of climate on the quantity and quality of maple sap used to make maple syrup. Sap was sampled at 6 sites across the native range of sugar maple over 2 years as part of the ACERnet collaboration. At each site we sampled 15-25 mature sugar maple trees, and an additional 10 red maple trees at 3 sites. Sap from mature trees was collected using traditional gravity tapping methods following accepted tapping guidelines for gravity tapping. Xylem sap was collected from mid-February through late April, depending on the site, on all days of sap flow. Sap volume and sugar content were measured for each tree during each collection at site. Sap samples were then frozen and send to the Food and Health Lab at Montana State University for analysis of Total Phenolic Concentration as an additional measure of quality. A sub-set of samples from each site were analyzed for individual secondary metabolites.
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Sap Quality_6_29_19.xml Original FGDC Metadata
View
28.15 KB
application/fgdc+xml
ACERnet_SecondaryMetabolites.csv
20.86 KB
text/csv
ACERnet_TotalPhenolics.csv
188.93 KB
text/csv
Purpose
Evaluate Climate Effects on Maple Syrup Quality: Across a latitudinal gradient in the northeastern U.S., we will quantify the effects that climate has on sugar and red maple sap quality. We hypothesize that sap quality vary according to climatic conditions.
