Sap Quality at Study Sites in the Northeast
type: Dataset
description: 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.
issued: 2025-11-22T15:09:38.655167
modified: 2018-10-26
spatial: Location
contact point: Organization
  fn: University of Massachusetts (Point of Contact)
keyword: acer-saccharum
keyword: amerigeo
keyword: amerigeoss
keyword: ckan
keyword: climate-change
keyword: forest-ecosystem-service
keyword: geo
keyword: geoss
keyword: maple-syrup
keyword: national
keyword: north-america
keyword: predictive-model
keyword: united-states
keyword: yield
theme: {geospatial}

Digital Data
type: Distribution
description: CSDGM IMPORT ERROR: No digtinfo/formcont
issued: 2022-06-23T18:51:14.114851
modified: 2025-11-22T15:09:38.645991
access URL: https://doi.org/10.5066/P9PF7WF8

Web Resource
type: Distribution
issued: 2022-06-23T18:51:14.114862
modified: 2025-11-22T15:09:38.646404
access URL: https://doi.org/10.5066/P9PF7WF8

Original Metadata
type: Distribution
description: The metadata original source
format: XML
issued: 2022-06-23T18:51:14.114867
modified: 2025-11-22T15:09:38.646810
access URL: https://data.doi.gov/harvest/object/2131e2d7-2a08-4e23-ace6-1daba727909b
media type: text/xml

US Migrating
type: Agent