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Technical Expert Working Group for River Herring

Alewife photo credit: Jerry Prezioso, NOAAOn August 12, 2013, NOAA Fisheries announced that listing river herring under the Endangered Species Act as either threatened or endangered was not warranted. 78 FR 48944. While neither species is currently endangered or threatened, both species are at low abundance compared to historical levels.  Factoring in this decision was the significant data deficiencies for both species, as well as the uncertainty associated with available data. To help address data gaps, a Technical Expert Working Group (TEWG) was established for river herring throughout both species’ range from Canada to Florida. We worked with various organizations to identify individuals who possess expertise related to river herring, threats to their survival, and/or methods for assessing human and non-human impacts to river herring (e.g., connectivity, water quality/quantity, climate change, etc.) to participate on the TEWG. The TEWG will compile information for use by NMFS and ASMFC in the development of a conservation plan. Conservation of river herring must be holistic. Therefore, the TEWG includes subgroups by topic to focus discussions, and an overarching committee comprised of chairs/co-chairs from the subgroups. The conservation plan will increase public awareness about river herring, stimulate cooperative research efforts, and inform efforts to conserve the species.

Alewife photo credit: Jerry Prezioso, NOAAMeetings

Background Information

For more information on the River Herring TEWG, please contact Sean McDermott at or 978-281-9113.