The Updated Silvics of North America Project (USNAP) is currently conducting a full revision to the Silvics of North America (SNA)! This project is a collaborative effort by the USDA Forest Service, the Canadian Forest Service, and the National Forestry Commission of Mexico.
Many exciting features will be incorporated into the SNA for the very first time. One of the primary updates is that the SNA will now be published digitally as opposed to hardcopy books. The digital publication will be interactive and free to access, will support readability across devices (e.g., tablets, cell phones, laptops), and will include the option to download as a PDF file for offline reading. Chapters will also be published in Spanish and French for the first time to ensure equal access to users throughout North America.
In addition to the new access methods, chapter content is also being updated. This will include an expanded species list (especially for Canada and Mexico), new range and projection maps, and new chapter sections on important topics such as disturbances, goods and services, urban forestry, and research gaps. All SNA chapters will be newly written, peer reviewed, and individually citable. Once a chapter is published, it will be put on a maintenance schedule to assess the need for future updates so that the SNA continually reflects modern science.
Preview of the Silvics of North America digital publication in development.
Website in Development
The Silvics of North America has been the go-to reference for foresters and natural resource managers in the United States since 1965 and is considered an essential resource for understanding the fundamental silvics and species ranges of important trees species in North America. Though it was updated in 1990, the 30-plus years since have seen significant changes in species importance, improvements in understanding of species ecology, growth and genetics, and a better understanding of how climate change will impact individual species.
Read Bringing the Silvics of North America into the 21st Century from The Forestry Source to learn more about the need for this revision and how the framework for leading this project will be structured.
To see key project details at a glance, download the USNAP Fact Sheet in your preferred language:
The USNAP is accepting lead author applications for all species chapters. Applications are being reviewed on a first-come, first-served basis. The geographic scope of the updated Silvics of North America will be North America (defined as the conterminous United States, Canada, and Mexico). Species found only in Central and South America (defined as the region south of Mexico), the Caribbean, and Pacific Islands will not be included in the update. Please review the Chapter Outline and adhere to the instructions and timelines indicated below. All applications will be reviewed by the USNAP. If you are selected, you will be provided an onboarding package which specifies formatting, provides a Fillable Chapter Template, and provides supplemental resources.
Selected authors will be required to submit their first draft in English within 1 year of being onboarded. All submitted chapters will then go through a peer review (i.e., there is no guarantee that a submitted chapter will be accepted). If your chapter passes the peer review and is accepted, it will be published on a digital web platform and translated into Spanish and French. All editorial, peer review, and translation services will be performed for authors by the established USNAP team. All chapters will be released as individually citable publications with credit given to all authors and associated reviewers at the beginning of each chapter. Lead authors will also be the primary contact for all future updates to their associated chapter.
In addition to the traditional authorship route described above, the USNAP is evaluating opportunities to develop a graduate-level symposium course to guide students through chapter development with oversight from a lead professor. This authorship model is still in development. However, you can remain current with any progress by indicating this particular interest in the General Interest Survey.
Applications will be reviewed on a first-come, first-served basis. At this time, there is no expected end date for the application period.
Since 2019, more than 135 leading forestry experts from throughout North America have come together to address what content and format should be reflected in the revised Silvics of North America. Thanks to these contributions, we are pleased to share the USNAP Chapter Outline, which details the revised structure for the chapters. Chapter sections, headings, and subheadings are formatting delineations which will be standard for all chapters. Author Guidance statements describe what information authors should address for each topic in the chapter, but delineations found within are for informational purposes only. Customization of the outline may be approved according to need on a per species basis and can be requested in the application process.
Please view the Chapter Outline in your preferred language below:
USDA Forest Service
USDA Forest Service
Canadian Forest Service
Pedro Antonio Plateros Gastelum
Federal Representative for Mexico
National Forestry Commission of Mexico
Web Development Contact
USDA Forest Service
The USNAP consists of four Committees that manage, facilitate, and produce content for the project:
The Leadership Committee is divided into co-equal representatives from the current participating nations: the United States, Canada and Mexico. The primary responsibility of the Leadership Committee is to provide country-level approval, encourage participation, and solicit funding and personnel to sustain the project. Members from each nation are listed below:
The Project Support Committee is designed to manage critical processes of the USNAP. This committee includes the following:
- Principal Investigator - Steve McNulty
- U.S. Coordinator - Cameron Stelly
- Canada Coordinator - Sébastien Meunier
- Mexico Coordinator - Pedro Antonio Plateros Gastelum
- University Authorship Team (Co-Leads - Michael Saunders, Marlyse Duguid)
- Lead Editor - Cynthia F. Moser
- Web Development Team (Lead - Witne Neil)
- Translation Team
- Co-Author Pool
The Core Committee is the primary instrument for:
- Developing the content for the updated Silvics of North America
- Conducting peer reviews
- Managing species-specific or discipline-specific concerns related to the project
Within the Core Committee are three Species Group Teams which address the different chapter types. Each team is managed by 1 - 4 Team Leads and supported by 10 - 20 Team Members. These teams are:
In addition to Species Group Teams, the Core Committee has 9 Section Teams which address the standardized topics represented in each chapter. Each team is managed by 1 - 4 Team Leads and supported by 10 - 20 Team Members. These teams are:
- Distribution and Environmental Associations Team (Co-Leads: Lauro López Mata, Dan McKenney, John Pedlar, Anantha Prasad)
- Regeneration and Management Team (Co-Leads: Laura S. Kenefic, Rongzhou Man, Wilfred Previant)
- Genetics Team (Co-Leads: Nathalie Isabel, Ron Zalesny)
- Insect and Disease Team (Co-Leads: Mohammad Bataineh, Véronique Martel, Michael Stastny)
- Wildland Fire Team (Co-Leads: Lori Daniels, Sharon Hood, Dante Arturo Rodriguez Trejo )
- Drought Team (Co-Leads: Charles Luce, William C. Parker, Nelson Thiffault)
- Additional Disturbances Team (Co-Leads: Tara Barrett, Olivier Villemaire-Côté)
- Goods and Services Team (Co-Leads: Richard Bergman, Lisa Venier)
- Urban Forestry Team (Co-Leads: Ken Farr, Rich Hallet, Max Piana)
The Maintenance Committee is designed to manage future updates to any species chapter after it passes the USNAP peer review process, and is published online. All chapters will be assigned to a maintenance schedule to ensure that the Silvics of North America stays current and reflects the most recent scientific literature.
If you would like to indicate other interests, such as volunteering for a Core Committee team or receiving email notifications regarding project updates, please fill out our survey and we will follow up with any relevant opportunities or information.
The following are Frequently Asked Questions regarding the Updated Silvics of North America Project (USNAP). This is will be updated as the project progresses, so if you do not see your particular question addressed here, you may find it incorporated at a later date.
To provide a comprehensive revision to the Silvics of North America that will:
- Make the SNA the keystone reference for North American silviculture
- Reflect the most current silviculture science
- Modernize the document to current standards of technological engagement
- Allow for updating
The Updated Silvics of North America Project is officially led and managed by the U.S. Forest Service, the Canadian Forest Service, the National Forestry Commission of Mexico, and the Postgraduate College of Mexico.
The USNAP is guided by the project's Leadership
Committee. Serving underneath the
Committee is the Core Committee, which represents
the primary working group responsible
template development and peer review.
After a chapter is successfully completed and uploaded to the new SNA, it will move into the jurisdiction of the Maintenance Team. This is the group that will manage all future revisions and updates to the SNA.
Additionally, the USNAP is facilitated by the Project Support Committee.
Currently, the USNAP is preparing to accept lead author applications beginning on June 5th, 2023. The first completed chapters are expected to be online for public access during May of 2024.
Beginning on June 5th, 2023, individuals can formally apply for a specific species chapter using the authorship application process on the project's main web page. All chapter requests will go through the same evaluation process. Once selected, lead authors will have the authority to choose their co-authors.
Yes, a chapter template, formatting requirements, and supplemental guidance will be provided to all authors.
The Silvics of North America will focus on including the most important species within the North American continent. Initially, 300+ species will be targeted, but as a living document it will continually receive additions.
Typically, variations of a species will remain under a single chapter. The virtual nature of the document will allow for extending a chapter to include variant specific information. Species Group Co-Leads will provide guidance for particular cases in question.
No, these maps will be developed by the project's Distribution and Environmental Associations Team as a resource for lead authors. All developed maps will be provided to authors in a centralized shared drive. It will be the chapter author's responsibility as the subject expert to evaluate the range maps.
The SNA is not a climate change impacts document. The SNA has been and will continue to be a silvics guide. All impacts to species management will be explored within each chapter, including but not exclusively climate change/variability.
The entire revised Silvics of North America will be available in English, Spanish, and French.
There are 2 main routes to become involved in the project. The primary way is to apply for a lead author position. To apply, please follow the instructions on the project website starting June 5th.
Secondarily, you can indicate your interest to join as a member of our Core Committee Teams (e.g., Wildland Fire, Genetics) to assist in the peer review process. Currently these roles are all volunteer based, but any involved participant will receive proper credit in the updated SNA. If you would like to join the Core Committee, please indicate your interest here.