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Plants and Trees Expert Witnesses

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John Booth
Director & Principal Consultant
242 Highfields Park
Derby DE22 1JY
GBR
phone: 01332-556307
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Mark WilliamsJohn Booth, the Principal Consultant and Practice Director of Sylvanus Arboricultural Consultants Ltd., is a Chartered Aboricuturalist and Chartered Environmentalist and one of the UK’s most widely qualified Arboricultural Consultants. He has over 25 years experience in both the private and public sectors and has written numerous articles and papers for respected publications including the International Journal of Urban Forestry for which he is also a referee.

Mr. Booth and Sylvanus Ltd. are regularly instructed by both developers and Local Planning Authorities (LPA’s) who are keen to ensure a satisfactory outcome from the planning process, (i.e. an appropriate balance between tree retention and realizing a site's development potential). All such work is carried out in accordance with the guiding principles of British Standard 5837 ‘Trees in Relation to Construction – Recommendations.’

Mr. Booth is a Bond Solon/Cardiff University trained Expert Witness and a member of the Expert Witness Institute. He has many years experience in both courtroom and planning enquiries.

Services Include:

  • Tree Inspection & Survey - Single Tree, Large Population, Mortgage Lending, Safety and Subsidence Issues
  • Tree Preservation Orders (TPO's) and Conservation Areas - Detailed Specifications for Tree Work Applications for Trees with Statutory Protection
  • Trees and Development - Tree Surveys for Submission with Planning Applications
    Tree Constraints Plans (TCP’s)
    Tree Protection Plans (TPP’s)
    Arboricultural Impact Assessments (AIA)
    Arboricultural Method Statements (AMS)

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    John A. Harris
    Principal
    4600 Sheridan Street,Suite 403
    Hollywood FL 33021
    USA
    phone: 1-866-981-1770 or (954) 986-9405
    fax: 954-986-9406
    John A. Harris, Principal of Landscape Economics, LLC, and President of Earth Advisors, Inc., is a LANDSCAPE ECONOMIST who has worked in the Arboriculture, Forestry, landscape and horticultural fields for over 20 years. Mr. Harris has provided reputable consulting, education and project management services for a wide variety of projects across the United States and internationally, in both temperate and tropical ecosystems.

    Areas of Expertise:
  • Expert Witness for Arboricultural, Landscape, Nursery Values and Conditions
  • Landscape and Tree Risk Assessments
  • Landscape and Tree Value Appraisals
  • Landscape and Tree Damage Appraisals
  • Storm Damage Assessments and Recovery Plans
  • Landscape Health and Condition Evaluations
  • Arboricultural Health and Condition Evaluations
  • Landscape, Arboricultural, Forestry, Environmental Project Management
  • Environmental Due Diligence
  • Environmental Permitting and Mitigation Planning
  • Environmental Permit Negotiations
  • Municipal Tree Inventory and Management Plans
  • GPS/GIS Environmental Mapping Projects
  • Forest Resources Management Plans
  • Grounds Maintenance Practices
  • Arboricultural Practices
  • 8/2/2012 · Plants & Trees
    The number of storms in recent years increases the need for better tree and landscape decisions for property owners. Research regarding landscape damages for different storm intensities, what plants get knocked down by winds more often, and priorities for landscape restoration have been intensified by many southern state universities' forestry and horticultural departments.

    Trees and landscapes have been valued since humans were given gardens for food and enjoyment. Once people determined how to harvest seeds, how to plant gardens and landscapes, and how to relocate trees and plants, then decisions about what to use and what not to use began to set values for plants. It is this author's opinion that these practices logically date back to the beginning of history.

    3/7/2012 · Plants & Trees
    The value of a tree can only be determined if we agree. Any value given, whether by a layperson or a professional, is real when another person involved in the process agrees to that value. The value used in the final decision can also be a different value from the one determined by the experts who worked on it (especially when the experts worked on different sides of a valuation case).

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    Julian Forbes-Laird
    Principal Consultant
    Dendron House
    Barford Road
    Blunham Bedford MK44 3ND
    GBR
    phone: 44-1767-641648
    fax: 44-1767-641648
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    Julian Forbes-Laird is a Chartered Arboriculturist, Arboricultural Association Registered Consultant, experienced Expert Witness and Principal Consultant of Forbes-Laird Arboricultural Consultancy Ltd. Mr. Forbes-Laird has a professional practice working throughout the UK and overseas. He covers all aspects of arboriculture, specializing in planning, tree safety and litigation related matters.

    Mr. Forbes-Laird is supported by a team of regionally based consultants, giving him national and international reach. He sets the standard for client service, works throughout the UK and abroad, provides commercially realistic strategic advice, prepares sensitive yet practical management plans, works within project design teams to evolve arboriculturally defensible layouts, wins planning appeals, and handles an enormous amount of work under pressing deadlines helping clients' achieve the best outcome.

    Mr. Forbes-Laird is widely recognised as an authority on legal issues pertaining to trees and is an experienced Expert Witness. His expert services include Pre-Action Case Evaluation, TPO Prosecutions, Forensic Accident Investigation and Tree Root Damage to Buildings.

    Other Services Include:
  • Planning for Developers and Local Authorities
  • Tree Preservation Orders (TPO's)
  • Safety Inspections
  • Subsidence
  • Expert Witness
  • Landscape Design
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    Siegfried Guggenmoos
    President
    Sherwood Park T8A 0T8
    CAN
    phone: 780-467-6389
    fax: 780-467-6389
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    Siegfried Guggenmoos, B.Sc.(Agr.), P.Ag., Principal of Ecological Solutions, Inc. is a Professional Agrologist, with over 30 years of experience in the electric/gas utility corridor vegetation management business.

    Mr. Guggenmoos has designed, implemented and provides assessments of utility vegetation management programs. In evaluating the prudence of vegetation management programs Mr. Guggenmoos has developed methodologies to assess their efficacy by predicting the impact of vegetation management program as practiced, on the future costs and reliability of electric systems.

    Areas of Consultation:
    • Storm hardening electric transmission and distribution systems to quantitatively manage tree-caused service interruptions
    • Advise and develop protocols for assessments of power line tree exposure and mitigation
    • Advise on least cost vegetation management by synchronizing economics and ecology
    • Advise on impacts of vegetation management program alternatives, modifications
    • Provide context for vegetation management, greenhouse gas mitigation measures in a competitive energy market
    • Facilitate for management, staff, contractors and stake holders an actionable understanding of ecological principles and their impacts on vegetation management needs and costs
    • Provide project management; expert review of programs and proposals
    • Develop and advise on quantification, monitoring and verification of biotic greenhouse gas mitigation measures
    Abstract — Severe weather events such as ice and tropical storms routinely cause extensive damage to electrical distribution systems. Much of the damage and service loss can be attributed to trees. Events where service restoration spans days or weeks are generally closely examined through regulator directed hearings. Even when no specific actions are subsequently

    Abstract - For power transmission systems compliant with safety codes and reliability standards there remains a risk of tree-caused interruptions from the in-fall of trees from outside the right-of-way. This paper reports on the quantification of tree exposure outside National Grid’s transmission corridors and examines the variables impacting the risk of a line contact by trees