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Project Information

Title: Presence and Effects of Marine Derived Nutrients (MDN) in Stream, Riparian and Nearshore Ecosystems on Southern Kenai Peninsula, Alaska

Project Year and Number: 2004: 040726

Other Fiscal Years and Numbers for this Project: None

Principal Investigator (PI): Coowe Walker, Alaska Department of Fish & Game

Assisting Personnel: Craig Stricker, Mark Wipfli

Research Location: Southern Kenai Peninsula

Restoration Category: Research

Injured Resources Addressed: Not Specified

Abstract: Marine derived nutrients and carbon (MDN) delivered by salmon and other anadromous fishes are considered important drivers in riverine ecosystems, providing nutrients and food to these land-based food webs. However, we know little about the relative value of MDN compared to other nutrient and carbon sources (e.g., watershed-derived) in the Gulf of Alaska region. The objectives of this study are to develop a water chemistry proxy for monitoring salmon returns, and to track and measure MDN effects in stream, riparian and nearshore environments, on the southern Kenai Peninsula. We will accomplish this by linking stream chemistry, marine isotope signatures, marine terrestrail fatty acid ratios, and key animal and plant community density, growth, and lipid measures along a gradient from river mouth to headwaters in key watersheds. This study will be integrated with related studies proposed in other areas of southcentral Alaska to develop a broader retinal understanding and widely-applicable long-term monitoring program for the GEM region.


Geographic Regions Cook Inlet
Species Fish - Salmon
Fields of Expertise Chemistry
Resource Management
Technological Methods Tissue sampling/biopsy

Proposal: View PDF (2,290 KB)

Funding Recommendations: View

Funding Detail For: 2004 , 2005 , 2006

Quarterly Project Tasks For: 2004 , 2005 , 2006

Annual Reports: 2004: View (102 KB) 2005: View (144 KB) 2006: View (359 KB)

Final Report: In Review Prior to Publication - For More Information Please Contact Us

Publications from this Project: None Available