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 Expert  107884

Expert in Forestry, Soil, environmental (atmospheric) pollution

Available for your Consulting and Expert Witness Needs

Minnesota (MN)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

Expert considers himself to be a forest ecologist, with an emphasis on the effects of disturbances on forests. Many of the disturbances which effect forests are related to humans, such as air pollution (acid rain and ozone) and forest harvesting. Expert's research experience includes issues of forest vegetation, silviculture, and lumbering, especially forest use and environmental impact.



forest vegetation




forest-use environmental impact


lumber manufacturing



As an ecosystem ecologist, Expert has conducted extensive research on forest and grassland ecosystems and has advised the National Science Foundation and other governmental agencies on funding research dealing with terrestrial ecosystems. His academic background is heavily weighted toward forests. His B.S. and M.S. degrees are in Forestry and his professional specialization at the University of Minnesota is Forest Soils.





land use environmental impact

One area of Expert's expertise and experience is in peatlands, especially those of Minnesota. He taught an advanced undergraduate/graduate level class at the University of Minnesota that dealt exclusively with peatlands. Expert has conducted extensive studies of peatlands. He has studied both bogs and fens, the two major hydrologic groupings of peatlands, and he understands the role of peatlands in the hydrologic cycle. He can knowledgeably converse on the topic of peatland formation, both terrestrialization and paludification. He has evaluated peatlands, including extensive studies of their vegetation, water chemistry, hydrology, and the properties of the peat that is resident in those peatlands. Such evaluations relate to the suitability of peatlands for development.



peat research


peatland development


peatland evaluation


peatland hydrology

Expert has been involved in conducting, reviewing, and evaluating research dealing with the effects of acid deposition, including acid rain, on natural aquatic and terrestrial ecosystems. The deposition of both natural and man-influenced chemicals from the atmosphere to terrestrial ecosystems is a continuing concern. Expert is conversant in much of the work related to deposition of acidic materials and heavy metals, including mercury, to terrestrial systems.

acid deposition


acid rain

He has measured biomass of plant communities (natural vegetation) and is acquainted with global distribution of biomass in terrestrial ecosystems.




Expert's technical training and much of his work have focused on the relationship between vegetation and soil in forests. He has extensive experience in soil classification and mapping, and understands the relationships between soil map units and forest productivity, and the effects of forest harvest activities on soil properties.

soil science


soil chemistry

As a component of his professional activities, Expert has personally characterized many soils and has advised fellow scientists, students, and other professionals in soil characterization.



soil characterization

Expert has conducted research on wetland structure and function, specifically peatlands.

wetland ecology

Expert has conducted extensive research on terrestrial ecosystems, especially forested systems, but also has knowledge and experience in many other terrestrial systems. Such research includes many kinds of ecosystem measurement, and he understands the advantages and disadvantages of various measurement systems. As part of his study of ecosystems, he has conducted multivariate analysis of vegetation data in order to understand its variation in time and space. He has published extensively on vegetation ecology, especially with emphasis on the abiotic portions of the ecosystem.

ecosystem measurement


terrestrial ecosystem


vegetation analysis


vegetation ecology

Expert understands and is acquainted with concepts such as hydrography, base flow, storm flow, runoff, and variable source area. Wetland hydrology is a subcategory of watershed hydrology, is misunderstood by many. Expert understands the unique hydrology of wetlands and how their hydrologic behavior is included within the more general category of watershed hydrology.

watershed hydrology


wetland hydrology

Show Secondary and Basic Areas of Expertise
Dave Expert may consult nationally and internationally, and is also local to the following cities: Minneapolis, Minnesota;  Saint Paul, Minnesota;  Rochester, Minnesota;  Burnsville, Minnesota;  Saint Cloud, Minnesota;  Eden Prairie, Minnesota;  Minnetonka, Minnesota;  and Eau Claire, Wisconsin.

Year   Degree   Subject   Institution  
1968   Ph.D.   Soil Science   University of Minnesota  
1965   M.S.   Forestry   University of Minnesota  
1963   B.S.   Forestry   University of Minnesota  
1961   As.S.   Pre-Forestry   Virginia Junior College  

Work History:
Years   Employer   Department   Title   Responsibilities

1970 to 2000


University of Minnesota


Soil Science and Forestry


Emeritus Professor


Expert's responsibilities included research and teaching dealing with the role of soils in forest ecosystems, estimating forest productivity, and effects of forest harvesting on forest systems.

Career Accomplishments:

Expert is a member of AAAS, the American Society of Agronomy, the Ecological Society of America, the Classification Society, and the Minnesota Association of Professional Soil Scientists.

Professional Appointments

He has been a Technical Advisor for the Electric Power Research Institute on research projects related to acidic deposition.He has served as a Reviewer and as a Workshop Participant for the EPA.

Publications and Patents Summary

Expert has spoken at several workshops and conferences, and has authored or co-authored numerous technical publications in his field of expertise.

Selected Publications and Publishers  
 - Biomass and Bioenergy  
 - Journal of Environmental Quality  
 - Nature  
 - Soil Science Society America Journal  
 - Wetlands  

Consulting Services:
Click the green button above to contact Dave Expert for a free initial screening call regarding your expert consulting needs.  Dave Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Dave Expert is free.

Expert Witness:
Recent Litigation Client Requests:
  • Pollution expert for consulting on effects of acid rain in Chicago.
  • Forestry expert for consulting on Auburn - Toomers Corner Oak Tree poisening.
  • Expert in vegetation for consulting on tree-trimming.
  • Groundwater litigation expert in California for consulting on flooding caused by a broken levy.
Click the green button above to contact Dave Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Dave Expert is free.


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