Murrelet Report Cover photos

The marbled murrelet is a seabird that spends most of its life in coastal waters, while nesting primarily in the trees of late-successional and old-growth forests. The marbled murrelet monitoring program assesses status and trends in marbled murrelet populations and nesting habitat to answer the basic questions:

  1. Are the marbled murrelet populations associated with the Northwest Forest Plan area stable, increasing, or decreasing?
  2. Is the Plan maintaining and restoring marbled murrelet nesting habitat?

Murrelet monitoring is an interagency cooperative effort. We monitor marbled murrelet population size and trends by annual sampling of populations in near-shore waters, using a standardized, boat-based line transect method. Trends in the amount and quality of nesting habitat in the Plan area are evaluated periodically using habitat suitability models applied to current vegetation maps developed by the Late-Successional and Old Growth Forest monitoring program.

Contacts

Name Phone E-mail
Bill McIver - Program Manager   bill_mciver@fws.gov

Reports

5-year Monitoring Reports Format
20-year Falxa, Gary A.; Raphael, Martin G., tech. coords. 2016. Northwest Forest Plan—the first 20 years (1994–2013): status and trend of marbled murrelet populations and nesting habitat. Gen. Tech. Rep. PNW-GTR-933. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 132 p. (2-page summary) PDF
15-year habitat Raphael, Martin G.; Falxa, Gary A.; Dugger, Katie M.; Galleher, Beth M.; Lynch, Deanna; Miller, Sherri L.; Nelson, S. Kim; Young, Richard D. 2011. Northwest Forest Plan—the first 15 years (1994–2008):  Status and trend of nesting habitat for the marbled murrelet under the Northwest Forest Plan. Gen. Tech. Rep. PNW-GTR-848. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 52 p. PDF
15-year population Miller, Sherri L.; Raphael, Martin G.; Falxa, Gary A.; Strong, Craig; Baldwin, Jim; Bloxton, Thomas; , Galleher, Beth M.; Lance, Monique; Lynch, Deanna; Pearson, Scott F.; Ralph, C. John; Young, Richard D. 2012. Recent population decline of the Marbled Murrelet in the Pacific Northwest. Condor 114:771-781, plus appendix. PDF
10-year Huff, Mark H.; Raphael, Martin G.; Miller, Sherri L.; Nelson, S. Kim; Baldwin, Jim, tech. coords. 2006. Northwest Forest Plan—the first 10 years (1994-2003): status and trends of populations and nesting habitat for the marbled murrelet. Gen. Tech. Rep. PNW-GTR-650. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 149 p. PDF
Monitoring plan Madsen, Sarah; Evans, Diane; Hamer, Thomas; Henson, Paul; Miller, Sherri; Nelson, S. Kim; Roby, Daniel; Stapanian, Martin. 1999. Marbled murrelet effectiveness monitoring plan for the Northwest Forest Plan. Gen. Tech. Rep. PNW-GTR-439. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 51 p. PDF
Other Reports  
  Pearson, S.F. et al. 2018. Marbled murrelet effectiveness monitoring, Northwest Forest Plan: 2017 summary report. PDF
  D. Lynch et al. 2017. Marbled murrelet effectiveness monitoring, Northwest Forest Plan: 2016 summary report. PDF
  D. Lynch et al. 2016. Marbled murrelet effectiveness monitoring, Northwest Forest Plan: 2015 summary report. PDF

For older reports see the document archive.

Data

Description Format
20-year Report 2012 habitat suitability map (grid)
Marbled Murrelet Analysis Areas (shapefile)
15-yearReport Marbled Murrelet Nesting Habitat Suitability, Washington (2006)
Marbled Murrelet Nesting Habitat Suitability, Oregon (2006)
Marbled Murrelet Nesting Habitat Suitability, California (2007)