Data · collection
North Shore Volunteer River Herring Counts
Listed in NASA Earthdata CMR
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.
Description
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)
Links
Documentation and papers
- 8tb.org /projects/alewife.htm ↗
Additional information about this monitoring program and data are available from this web site.
project · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214586136-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214586136-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Fish · Marine Ecosystems · Not provided
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214586136-SCIOPS | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biological-classification/animals-vertebrates/fish | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecosystems/marine-ecosystems | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |