board on agriculture and natural …nas-sites.org/dels/files/2019/01/report-release...report release...
TRANSCRIPT
![Page 1: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/1.jpg)
Report Release Event
January 8, 2019
nas.edu/forestbiotech
#ForestBiotechStudy
Forest Health and
Biotechnology:
Possibilities and
Considerations
BOARD ON AGRICULTURE AND NATURAL RESOURCES
![Page 2: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/2.jpg)
![Page 3: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/3.jpg)
Committee on the Potential for Biotechnology to
Address Forest HealthSusan E. Offutt, Chair
U.S. Government Accountability Office (retired)
Vikram E. Chhatre, University of Wyoming
Jason A. Delborne, North Carolina State
University
Stephen DiFazio, West Virginia University
Doria R. Gordon, Environmental Defense Fund
Inés Ibáñez, University of Michigan
Gregory Jaffe, Center for Science in
the Public Interest
Mark D. Needham, Oregon State University
Clare Palmer, Texas A&M University
Jeanne Romero-Severson, University of
Notre Dame
Ronald R. Sederoff (NAS), North Carolina
State University (emeritus)
Diana L. Six, University of Montana
Richard A. Sniezko, U.S. Forest Service
Forest population genetics
Tree gene flow and reproductive biology
Genomics and quantitative genetics
Forest ecology and entomology
Selective breeding and genetic engineering of
forest trees
Sociology and ethics
Economics
U.S. environmental and regulatory law
![Page 4: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/4.jpg)
• Examine the potential use of biotechnology for mitigating threats
to forest tree health
• Identify the ecological, economic, and social implications of
deploying biotechnology in forests, and develop a research agenda
to address knowledge gaps about its application
• Focus on trees and consider at least two cases that consider the
use of biotechnology to protect a tree species from an insect
and/or disease where negative consequences for forest health are
anticipated.
Statement of Task
![Page 5: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/5.jpg)
Impetus for the Study
• A healthy forest sustains ecosystems over time and space and
provides value to humans
• Forest health is threatened by invasive pests, exacerbated by
climate change
• Existing regulatory system has not yet reviewed biotech plants to be
released into unmanaged forest ecosystems
• Public sector plays an important role in protecting forest health
![Page 6: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/6.jpg)
A condition that sustains the structure, composition,
processes, function, productivity, and resilience of forest
ecosystems over time and space.
An assessment of this condition is based on the current
state of knowledge and can be influenced by human
needs, cultural values, and land management objectives.
Definition of Forest Health
![Page 7: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/7.jpg)
Aquatic
Terrestrial
Atmospheric
Water
Flora
Fauna
Other Biotic
Components
Atmospheric
Components
Soil
Other Abiotic
Components
Composite
End-Products
Other End-Products
Extractive Use
In-situ Use
Non-Use
- Existence
- Bequest
- Other Non-Use
Industries
Households
Government
Environment End-Products Direct Use/Non-Use Direct User
SOURCE: EPA. 2015.
Forest Ecosystem Functions and Services
Flows of Final
Ecosystem Services
![Page 8: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/8.jpg)
Harmful introductions Lack of resistance Climate change More than one threat
SOURCE: Krist et al., 2014.
Dark red areas represent estimates of at least 25% loss of tree vegetation
between 2013 and 2027 due to insects and diseases.
Increasing Threats to Forest Health: Insect Pests and Pathogens
![Page 9: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/9.jpg)
Harmful Introductions: Nonnative Insect Pests and Pathogens
• 455 known insect species introductions since 1600s
• 62 high-impact insect species
• 16 high-impact pathogen species
Sap feeders Phloem and wood borers
SOURCE: Aukema et al., 2010.
![Page 10: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/10.jpg)
Lack of Resistance: Novel Insect Pests and Pathogens
Ash: Emerald Ash Borer
Chestnut: Chestnut Blight, Root Rot Whitebark Pine: White Pine Blister RustSOURCE: U.S. Forest Service SOURCE: R. Sniezko
SOURCE: iStock Photo
Poplar: Canker (Septoria)SOURCE: S. Simon
![Page 11: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/11.jpg)
Climate Change: Synergistic Effects with
Native and Nonnative Insect Pest and Pathogens
• Warmer winters
• Fewer cold spells
• Longer active seasons
Estimated development of spruce beetle in a single year in North American spruce forestsSOURCE: Bentz et al. 2010.
![Page 12: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/12.jpg)
More than One Threat:
Diseases, Insect Pests, Environmental Stressors
Chestnut: Chestnut Blight,
Root Rot
SOURCE: U.S. Forest Service
Whitebark Pine: White Pine Blister Rust,
Mountain Pine BeetleSOURCE: R. Sniezko
![Page 13: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/13.jpg)
Measures to Curtail the Attacks from Insect
Pests and Pathogens
SOURCE: Adapted from GAO, 2015.
![Page 14: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/14.jpg)
Using Biotechnology to Mitigate Threats to Forest Health
• Biotechnology provides a means to introduce or modify genes in trees to
increase resistance to pests
– 2 tree species have been altered with biotechnology for forest health purposes, but both are
still in field trials
• Challenges to using biotechnology include:
– Lack of knowledge about the mechanisms of pest resistance in trees
– Large genome size and long life span
– Lack of information on the effects of releasing new genotypes into the environment
– Need for resistant trees to be suitably adapted to specific environments
– Many tree species under pest attack do not have adequate or sustained breeding programs in
which to integrate biotechnology
Caveats
• Prevention of the introduction of nonnative species and eradication are the most cost-
effective and lowest impact approaches to managing nonnative pests.
• No single management practice is likely to be effective in combatting major pest outbreaks.
![Page 15: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/15.jpg)
Using Biotechnology to Mitigate Threats to Forest Health
Recommendations
• Sufficient investment of time and resources should be made to successfully identify or
introduce resistance into tree species threatened by insects and pathogens.
• More research should be conducted on the fundamental mechanisms involved in trees’
resistance to pests and adaptation to diverse environments under a changing climate.
• The deployment of any biotechnological solution with the goal of preserving forest
health should be preceded by developing a reasonable understanding in the target
species of (a) rangewide patterns of distribution of standing genetic variation, if
known; (b) magnitude of local adaptation; and (c) identification of spatial regions
that are vulnerable to genetic offset.
• Entities concerned about forest health should devote resources to identifying
resistant trees within a population that have survived a pest outbreak. Research to
understand the role of resistance in coevolved systems from the perspective of a
global host–pest system, where the nonnative pathogen or insect originate, would
help guide efforts in North America.
• Research should address whether resistance imparted to tree species through a
genetic change will be sufficient to persist in trees that are expected to live for
decades to centuries as progenitors of future generations.
![Page 16: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/16.jpg)
Improving Impact Assessment
• Any decision framework for assessing the potential impacts of introducing a
biotech tree on forest health needs to enable evaluation of trade-offs
between positive, negative, and neutral impacts
• An impact assessment framework accommodates an assessment of ecological
risk to forest function as well as consideration of the ecosystem services lost
or maintained with or without an intervention to address forest health
• Field trials are needed to gather data on biotech trees in terms of gene flow,
durability and effectiveness of resistance, seed generation and dispersal,
genetic fitness, and some ecosystem impacts
• Sources of uncertainty need to be incorporated into evaluations with models
– Address large spatial and temporal scales and stochasticity of forests
– Quantify reliability of impact assessments
– Estimate predictive capacity of models
– Identify data needs for models
– Account for climate change in areas targeted for species restoration
![Page 17: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/17.jpg)
Improving Impact Assessment
Recommendations
• Federal agencies should continue efforts to improve the incorporation of all
components of ecosystem services into the integrated impact assessment.
• Modeling and other approaches should be developed to address questions
about biotech tree gene flow, dispersal, establishment, performance, and
impact that are precluded where flowering of field trial material is
restricted.
• Models for tree biotech assessments should identify, quantify, and account
for sources of uncertainty.
• An adaptive management approach to forest health should be used to ensure
continued learning and address impacts to both the environment and
society.
• Impact assessment should be a continuous and iterative process.
![Page 18: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/18.jpg)
Research and Investment Needs Beyond Biotechnology
• Biotechnology is one of many approaches to address forest health and should
not be pursued to the exclusion of other options
• Multiple management practices may need to be used to address forest
health threats
• Interventions to address forest health using biotechnology should also
consider social values
– Biotechnological interventions are likely to impose varying risks, costs, and
benefits on different groups of people over time
– Social impacts should be investigated, research into the perspectives of
individuals and communities likely to be affected should be carried out, and
affected communities should be engaged transparently and respectfully
– Engagement processes could include surveys, focus groups, town hall meetings,
science cafes
• A conceptual framework to account for forests’ intrinsic value is needed to
complement impact assessment
![Page 19: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/19.jpg)
Research and Investment Needs Beyond Biotechnology
Recommendations
• Investment in effective prevention and eradication approaches
should be the first line of defense against nonnative species in
efforts to maintain forest health.
• Management for forest health should make use of multiple practices
in combination to combat threats to forest health.
• Public funders should support and expand breeding programs to
encompass the genetic diversity needed to preserve tree species
essential to ecosystem services.
• Investment in human capital should be made in professions, including
tree breeding, forest ecology, and rural sociology, to guide the
development and potential deployment of pest-resistant trees
effectively.
![Page 20: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/20.jpg)
Research and Investment Needs Beyond Biotechnology
Recommendations (cont.)
• More studies of the societal responses to the use of biotechnology to address forest health
threats in the United States are needed. Such studies might investigate (1) the responses of
different social and cultural groups to the deployment of biotechnology in forests, (2) the
stability and consistency of attitudes toward the different applications of biotechnology in a
range of circumstances, (3) differences in attitudes toward biotechnology strategies (e.g.,
cisgenesis, transgenesis, genome editing), (4) the relationship between deeper value
orientation and attitudes toward biotechnology, and (5) how people consider trade-offs
between values such as wilderness and species protection.
• Studies of societal responses to the use of biotechnology to address forest health threats
should be used to help in developing a complementary framework to ecosystem services
that takes into account intrinsic values, related spiritual and ethical concerns, and social
justice issues raised by the deployment of biotechnology in forests.
• Respectful, deliberative, transparent, and inclusive processes of engaging with people
should be developed and deployed, both to increase understanding of forest health threats
and to uncover complex public responses to any potential interventions, including those
involving biotechnology.
• Developers, regulators, and funders should experiment with analytical deliberative methods
that engage stakeholders, communities, and the public.
![Page 21: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/21.jpg)
U.S. Regulatory System for Biotechnology
and Forest Health• The current regulatory system does not consider forest health
• Study’s definition of forest health considers entire forest ecosystem
and its value to humans
• Current regulatory system has more narrow focus
– Deliberate release of resistant tree into the environment intended to protect
forest health
– Geographic scope of release means involvement of large, diverse group of
stakeholders
– Contrast with regulatory experience with agronomic crops
Recommendation: Regulatory agencies should explore ways to incorporate into
their regulatory oversight responsibilities the ability to assess the impact on
ecosystem services for biotech and nonbiotech products developed for
improving forest health.
![Page 22: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/22.jpg)
Public Sector as Catalyst
• Public (and private non-profit) sector would logically
lead in development and assessment of potential of
biotech trees
• Evaluating trade-offs
– Establish connection between ecosystem functions and the goods
and services provided to humans
– Consider both positive and negative effects on ecosystem services
and identify distribution of effects across stakeholders
![Page 23: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/23.jpg)
Filling Knowledge Gaps
• Preparing for effective responses to threats to forest
health
• Understanding tree response to biotic and abiotic stress
– Forest genetics
– Tree breeding
• Understanding societal values and perspectives on
interventions
– Effective engagement with stakeholders and communities
– Linkage between ecosystem functions and services
![Page 24: BOARD ON AGRICULTURE AND NATURAL …nas-sites.org/dels/files/2019/01/Report-Release...Report Release Event January 8, 2019 nas.edu/forestbiotech #ForestBiotechStudy Forest Health and](https://reader034.vdocument.in/reader034/viewer/2022042802/5f388bdd753a594a136c0f34/html5/thumbnails/24.jpg)
Download the report for FREE
www.nap.edu
Study Sponsored by
www.nas.edu/forestbiotech @NASEM.Ag @NASEM_Ag #ForestBiotechStudy
Thank YouCommittee members
Reviewers
Speakers and members of the public
Sponsors
National Academies staff