Documents
Atlantic Salmon Recovery Plan
Atlantic Salmon Recovery Proposal Guidelines
Publication Date: 2020
Modification Date: Mon 05 Oct 2020 02:59:23 PM
Contributors: Maine DMR , USFWS , NOAA-Fisheries , Penobscot Indian Nation
Proposal TEMPLATE.docx — application/vnd.openxmlformats-officedocument.wordprocessingml.document, 14 kB (15,317 bytes)Section 6 Informational Presentation
Publication Date: 2016
Modification Date: Wed 23 May 2018 01:26:15 PM
Contributors: L. Manning
Sec6 Workshop_Maine_2016_clean.pdf — PDF document, 1,295 kB (1,326,843 bytes)US Atlantic Salmon Assessment Committee reports
US Atlantic Salmon Assessment Committee reports - Read More…
Review of Atlantic Salmon Hatchery Protocols, Production, and Product Assessment
Publication Date: 2007
Modification Date: Thu 13 Jun 2019 01:36:55 PM
Contributors: Mr. Lee Blankenship , Dr. Deborah Brosnan , Dr. Ian Fleming , Dr. Scott McKinley , Dr. Kerry Naish , Dr. David Secor , Lisa Sztukowski , Dr. Steven Courtney
HatcheryReview.pdf — PDF document, 669 kB (686,004 bytes)Atlantic Salmon Research Joint Venture (ASRJV) Annual Report
Publication Date: 2020
Modification Date: Mon 18 May 2020 10:12:34 AM
Contributors: ASRJV , Atlantic Science Enterprise Centre
ASRJV_Annual Report 2019_ENG.pdf — PDF document, 3,713 kB (3,802,713 bytes)Workshop Report: Diadromous fish as marine prey
Publication Date: 2021
Modification Date: Thu 15 Apr 2021 08:59:26 AM
Contributors: TSheehan , JStevens
Workshop Report: Diadromous fish as marine prey
Over the past 20 years, efforts to restore diadromous fish in Maine’s river systems have led to significant increases in run size for many species, namely river herring. As the abundance of river herring populations have increased, it has become more pertinent to understand role of river herring as prey for marine predators in the Gulf of Maine (GoM). To assess our current understanding of this ecological connection, we organized a workshop for scientists who are actively researching the role of diadromous fish as prey in the GoM. Over two days, scientists shared current research and preliminary results to foster discussion on the “state of the science”. Preliminary results from Maine Department of Marine Resources trawl survey and traditional diet sampling indicate that river herring abundance is variable at spatial and temporal scales in the nearshore GoM, with indications of overall increased abundance in recent years. Despite the perceived increases in river herring abundance, river herring detection in diets has been relatively low among the small number of sampled marine predators. Of these sampled marine predators are Atlantic cod (Gadus morhua), a groundfish with low abundance and truncated size distribution. However, river herring have recently been detected for the first time in the diet of Atlantic Bluefin tuna (Thunnus thynnus) sampled in the GoM. Further, stable isotope analysis is proving to be a powerful tool for detecting the presence of freshwater prey contributions to the diets of marine predators at a broader temporal scale than traditional diet sampling. Participants discussed potential synergies within these investigations and committed to a future meeting to explore these topics further and formalize connections by coordinating sample collection, comparing methodologies, and sharing results. This suite of studies is slated to continue and therefore strengthen our understanding of the role of diadromous fish, especially river herring, as marine prey.
For more information contact Justin Stevens at UMaine SeaGrant ([email protected])
Document Actions