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MBI offers specialized expertise in aquatic and terrestrial biological assessment, monitoring, and technical evaluation. Our goal is to assist our clients toward better management, restoration, protection, and improvement of our nation’s natural resources. MBI also offers specialized training in aquatic resource ecology, evaluation, and restoration, as well as personalized training to meet the unique needs of individuals and organizations.
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New England Rivers Fish Assemblage Study Completed

Author: Chris Yoder


MBI with support from U.S. EPA conducted an assessment of the fish assemblages in the rivers of New England during 2002-9. This included a survey of Maine Rivers in 2002-7 and the development of a fish Index of Biotic Integrity (IBI). Two project reports were recently posted on the MBI publications pages and include Development of Methods and Designs for the Assessment of the Fish Assemblages of Non-Wadeable Rivers in New England (Final Report and Appendices) and Maine Rivers Fish Assemblage Assessment: Development of an Index of Biotic Integrity for Non-wadeable Rivers. (Addendum December 31, 2015). The New England report includes an assessment of the status of more than 370 sites in 36 individual rivers, an analysis of the most limiting stressors to the fish assemblage, and case studies of specific impacts observed in the Connecticut River. The report is complete with appendices including a fish distribution atlas for New England rivers. The development of the Maine IBI was originally published in 2008 and this version is an update that includes the diadromous IBI metrics. Data collection continues today in the lower Kennebec and Sebasticook Rivers to develop a long term database and to assess the effectiveness of diadromous fish restoration efforts. We encourage feedback about these reports with any questions or inquires being directed to Chris Yoder, Research Director.

Mid Field Season Update

Author: Allison Boehler


Our 2016 field season is well underway, and is keeping us busy! A major focus this year is our participation in the National Wetlands Condition Assessment, which began early this spring and has us at wetland sites across the country.


Our river and stream work is also underway, with fish and/or macroinvertebrate surveys in Ohio, Illinois, Indiana, and Maine. Other current field work includes crayfish surveys in Ohio and Tennessee, and herpetological surveys in Ohio.


This field season has presented us with new opportunities, and some challenges (see photo). We look forward to sharing some stories this field season from our hardworking crews, so be sure to visit us again soon.

Lon and Tyson digging a soil pit at a MN site

Education Update


Our 2016 training courses are complete. Thank you to everyone who attended!


If we have enough requests, we might still add a course or two, so please visit our training page again soon.


Our 2017 courses will be available for registration in November or December of this year, so please check back then.





2016 Ohio Vernal Pools Partnership Activities


The Ohio Vernal pools partnership had a great spring season. We hosted two Vernal Pool Workshops as well as the Vernal Pools Follow-up Expedition. We're looking forward to the 2017 season, and will have the workshops scheduled early next year. Check back soon for more details, and for more information on partnership activities.




Lon makes laborious headway through hybrid cat tails - MN Agassiz National Wildlife Refuge.