North Shore Volunteer River Herring Counts
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https://cmr.earthdata.nasa.gov/search/concepts/C1214586136-SCIOPS.html
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资源简介：
An expanding program of NGO-sponsored and citizen-based monitoring
programs has collected data on the spring upstream spawning runs of river
herring in the Great Marsh and the North Coastal Watershed, Essex County
Massachusetts. Monitoring began with the Parker River in 1997 and now includes
the Essex, Ipswich. Little and Saugus Rivers. Despite some modest efforts at
restoration, it appears that population levels are much below historic levels
and well below the production capacity of the spawning habitats of the lakes
and ponds of these river systems. More study is needed to determine the
apparent decline of river herring.
Waterbody or Watershed Names: Little River (Gloucester); Saugus River (Saugus);
Parker River (Georgetown and Newbury); Ipswich River (Ipswich); Essex
River/Alewife Brook (Essex)
提供机构：
SCIOPS
