Cooperative Fish and Wildlife Research Units Program: Maine
Education, Research and Technical Assistance for Managing Our Natural Resources

Maine Project


The role of marine derived nutrients delivered by anadromous fish in the restoration of freshwater ecosystems in the Penobscot River watershed, Maine

September 2007 - September 2012


Personnel

Participating Agencies

  • National Marine Fisheries Service
UL: carcass analog deployed in bait bag in treatment reach of stream

The ecological role of prominent migratory fish species is a poorly characterized natural history in the Penobscot River and surrounding area. Manipulation of this River through habitat impact and impoundments has resulted in a greatly reduced exchange of nutrients between inland and marine sources. Nutrient exchange is of interest as restoration of anadromous fish runs may depend, in part, on a continuous cycle of nutrient import from the ocean. The proposed study will probe the role of marine derived nutrients (MDN) in the Penobscot River watershed by i) modeling the exchange of nutrients in salmon streams ii) explicitly testing how increased nutrients affect young Atlantic salmon and iii) characterizing historic MDN incorporation in watershed ecosystems. Objective 1. Model the exchange of nutrients in salmon streams Task 1: Compile data on the composition of migratory and non migratory fishes presently and historically found in salmon streams of Maine Task 2: Based on life history and proximate composition, generate a general model of the timing and extent of nutrient fluxes Task 3: Use composition and timing data to generate a biologically realistic schedule for the import of nutrients into small streams in Maine (for Objective 2) Objective 2. Explicitly test how increased nutrients affect young Atlantic salmon Task 1: Identify up to 8 streams (adjacent if possible) in the Penobscot drainage. Criteria will be based on history of migratory fish populations, habitat quality and size. Task 2: Define and characterize stream reaches and habitat collecting baseline water quality and species composition data; � Low level water chemistry (Total and available N, P; C:N ratio). � Stable isotope ratios of terrestrial and aquatic macroinvertebrates, instream algae, and fish. � Species assemblages and indicators of biomass for aquatic inverts (drift) algae (glass plates) and fish. Task 3: Initiate salmon stocking establish monitoring of salmon growth for young of the year. � All streams will be stocked with Atlantic salmon fry (equal numbers into control and treatment sites) � Establish stream control (upstream) and nutrient enhancement treatment (downstream) sections would be identified. � Assess juvenile salmon response (measured in growth/productivity responses as well as changes in tissue stable isotope ratios) to presence and absence of nutrient enhancement.

Research Publications Publication Date
Guyette, M.Q., C.S. Loftin, and J. Zydlewski. (2013) Carcass analog addition enhances juvenile Atlantic salmon (Salmo salar) growth and condition.Canadian Journal of Fisheries and Aquatic Sciences 70:860-870. http://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2012-0496#.UbcWlZyX33A | Download 2013-06-30
Guyette, M.Q., C.S. Loftin, J. Zydlewski, and R.Cunjak. 2014. Carcass analogues provide marine subsidies for macroinvertebrates and juvenile Atlantic salmon in temperate oligotrophic streams. Freshwater Biology 59:392-406. | Download 2014-03-31
Presentations Presentation Date
Guyette, M., C. Loftin , J. Zydlewski, and J. Saros. Historical records of anadromous fish runs from sediment cores in Penobscot River watershed lakes, Maine. Annual meeting of the American Fisheries Society, Nashville, TN, 31 August-4 September, 2009-08-31
Guyette, M., C. Loftin, J. Zydlewski. The role of marine derived nutrients delivered by anadromous fish in freshwater ecosystems within the Penobscot River watershed, Maine. Presented by Margaret Guyette at the Bureau of Sea-run Fisheries and Habitat Monthly Meeting, Bangor, ME. 2009-02-09
Guyette, M., C. Loftin, J. Zydlewski. The role of marine derived nutrients delivered by anadromous fish in freshwater ecosystems within the Penobscot River watershed. Presented by Margaret Guyette, Maine Chapter of The Wildlife Society, Spring Meeting, Brewer, ME. 2009-04-22
Guyette, M., C.S. Loftin, and J. Zydlewski. 2010. Evidence of marine-derived nutrient uptake in Atlantic salmon nursery stream communities. 2010 North American Benthological Society Meeting, June 6-11, Sante Fe, NM. (poster). 2010-06-06
Guyette, M., C.S. Loftin, and J.Zydlewski. 2011. Evidence of marine-derived nutrient uptake in Atlantic salmon nursery stream communities. Presentation for the 2011 Coordinating Committee Meeting of the U.S. Geological Survey, Maine Cooperative Fish and Wildlife Research Unit. Orono, ME. 12 April. Invited. 2011-04-12
Guyette, M., C.S. Loftin, and J. Zydlewski. 2011. Evidence of marine-derived nutrient uptake in Atlantic salmon nursery stream communities. Presentation for the Project SHARE Quarterly Meeting. Whitneyville, ME. 9 June. Invited. 2011-06-09
Guyette, M., C.S. Loftin, and J. Zydlewski. 2011. Marine-derived nutrient uptake in Atlantic salmon nursery stream communities. Presentation at the Annual Meeting of the North American Benthological Society, 22-26 May, Providence, RI. 2011-05-22
Guyette, M., C.S. Loftin, and J. Zydlewski. 2011. The role of marine derived nutrients delivered by anadromous fish in Penobscot River watershed nursery streams. Presentation for the Maine Bureau of Sea Run Fisheries and Habitat, Department of Marine Resources. Bangor, ME. 10 February. Invited. 2011-02-10
Guyette, M., C.S. Loftin, J. Zydleswki. 2011. Effects of marine-derived nutrients on juvenile Atlantic salmon and their communities. Presented at the 21-22 April UMaine Grad Expo, Wells Commons. 2011-04-21
Guyette, M., C.S. Loftin, J.Zydlewski. 2010. The role of marine derived nutrients delivered by anadromous fish in Penobscot River watershed nursery streams. Presentation for the Cunjak Lab, University of New Brunswick. Fredericton, NB. 9 December. Invited. 2010-12-09
Guyette, M.Q., C.S. Loftin, and J. Zydlewski. 2011. Evidence of marine-derived nutrient uptake in Atlantic salmon nursery stream communities, 2011 Maine Water Conference, 16 March, Augusta, ME. 2011-03-16
Guyette, M., Loftin, C., Zydlewski, J. 2012. Evidence of marine-derived nutrient uptake in Atlantic salmon nursery stream communities. Presentation for the 2012 Coordinating Committee Meeting of the U.S. Geological Survey, Maine Cooperative Fish and Wildlife Research Unit. Orono, ME. March 20. 2012-03-20
Guyette, M., Loftin, C., Zydlewski, J. 2012. Marine-derived nutrient uptake in macroinvertebrate communities in Atlantic salmon nursery streams. Presentation for the Society for Freshwater Science Annual Meeting. Louisville, KY. May 24. 2012-05-24
Guyette, M. 2012. Effects of marine-derived nutrients on juvenile Atlantic salmon (Salmo salar) growth and body condition. Presentation for the College of Natural Sciences, Forestry, & Agriculture Graduate Student Research Awards Competition, University of Maine. Orono, ME. February 22, 2012. 2012-02-22
Guyette, M. Loftin, C., Zydlewski, J. 2012. Effects of marine-derived nutrients on juvenile Atlantic salmon (Salmo salar) growth and body condition. Presentation for the Biennial Research Forum: Atlantic Salmon and Their Ecosystems, Bangor, ME. January 10. 2012-01-10
Theses and Dissertations Publication Date
Guyette, Margaret Q. 2012. Responses of Atlantic salmon stream communities to marine-derived nutrients. Ph.D. dissertation, Wildlife Ecology, University of Maine, Ornon, 195pp. 2012-12-31