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Who We Are

Ecotone is based in Santa Fe, New Mexico, and its owner Jan-Willem Jansens has over 28 years of experience in complex ecological restoration work in this bioregion. Ecotone’s expertise encompasses a wide array of ecosystems, including watersheds, wetlands, riparian areas, forestlands, woodlands, and public and private open spaces and trails. Our clients include individual landowners, non-profit groups, educational institutions, local governments, and state and federal natural resource departments. We are leaders in the field of ecological restoration planning and design, known for our unique expertise in the diverse and complex ecosystems of northern New Mexico, focused analysis, comprehensive planning processes, diverse team management, and connections to professional networks in the western US.


Ecotone Staff

Jan-Willem Jansens

Owner | Principal 

A landscape architect and ecological planner by training,

Jan-Willem Jansens specializes in landscape management planning, ecological restoration planning and design, and land stewardship education. He has developed particular expertise in forest and woodland ecology, watershed health, soil health, and collaborative stewardship work with communities and landowners. He has 30 years of work experience New Mexico.


Adrienne Rosenberg

Monitoring and Educational Outreach Coordinator

Adrienne has lived a few lives as a farmer, writer and editor, social scientist, and audio documentarian. She joined Ecotone in 2019 to contribute her skills to restoration ecology. The common themes throughout her life are the observance of sacred landscapes, devotion to social justice, and active participation in the interconnection of all beings. Adrienne has a master's degree in International Human Rights, a B.S. in Forestry, and a B.S. in Global Studies. She previously worked for New Mexico State University's Sustainable Agricultural Science Center editing a book on acequias and conducting research on native bees, the Cerro Negro Forestry Project gathering forest data, the BLM documenting rare plants, and with Dr. Olivia Carril collecting data on native bees across the Southwest. With her company, Woven Web Designs, Adrienne installs native bee habitat across northern New Mexico. Adrienne lives in Apodaca, New Mexico.

A Sample of Ecotone’s Network of Clients and Partners:


Albuquerque Wildlife Federation

Arid Lands Institute

Beulah Wildland Refuge

Chelenzo Farm

Cimarron Watershed Alliance

Climate Change Leadership Institute

Dixon Community Fire Department

Eldorado Community Improvement Association

Embudo Valley Library and Community Center

Embudo Valley Regional Acequia Association

Forest Reserve Company

Forest Stewards Guild

Forest Trust

Glorieta Freedom Ranch, LLC

Hacienda Dominguez & Chelenzo Farm

Lazy S Ranch and Cattle Company, LLC

New Mexico Environment Department, Surface     Water Quality Bureau

New Mexico Department of Agriculture, Soil Health   Program

New Mexico Healthy Soil

New Mexico Forestry Division

New Mexico State Land Office

Quay Ranch, LLC

Quivira Coalition

Rio Grande Return

River Source

San Isidro Permaculture

Santa Fe Conservation Trust

Santa Fe County – Open Space & Trails Program

Santa Fe Watershed Association

State of New Mexico (various departments: see above)

Surroundings Studios

Sustainable Ecosystems, LLC

Synergia Ranch

Terrasophia, LLC

The Nature Conservancy

Tooley’s Trees

Wild Earth Guardians

UNM Wilderness Alliance

Upper Pecos Watershed Association

William J. Miller Engineers, Inc.

Wood Sharks, LLC

Zeedyk Ecological Consulting, LLC

various private landowners

Ecotones of wet meadows to dry meadows and the mixed-conifer forest.

The Story of Ecotone

An “ecotone” is an ecological transition area where two or more landscape types, biotopes or ecosystems come together. As a result, an ecotone shows characteristics of different ecological areas and can therefore be rich in biodiversity. Ecotones are often also areas with a great amount of change and movement, or more technically said, with considerable ecological dynamics.

Ecotones are edge areas where wildlife hangs out and moves through, water flows or stops flowing, shade and light meet each other, and where plant life ebbs and flows with the changing circumstances.


People often like areas that are diverse, that form a protective edge, that are between wet and dry, low and high, that are shaded but have a view, and therefore feel secure and comfortable.



As larger weather patterns and human activities change, ecotones show signs of flooding, drought, and erosion, plant regeneration and plant die off, rich biomass and wildfire, and competition or conflict between animal and human habitat.  It is therefore important to understand what is happening in such dynamic transition areas that we humans like as much as many animals do.


It is in the ecotone of natural and human habitat that we will need to plan carefully and perhaps more often. Landscape planning activities often take place in areas that are in transition, where new adaptations must be made, and where a new balance has to be found between the forces of nature and the needs and wishes of people. In many places, such transition areas have suffered from poor reconciliation between natural processes and people’s activities. Therefore, they often are degraded and need to be restored to a new level of functionality, health and beauty.


That is where the business Ecotone comes in, and why it bears the name of this critical part of the landscape. Ecotone as a business represents the power of restorative planning of landscapes in transition. 


Ecotone of a grassy forest opening to oak brush and conifer forest.

The Story of the Ginkgo Leaf Logo

The Ginkgo tree is a unique and ancient plant species (Ginkgo biloba). It has evoked many musings and meanings over the centuries because of its unusual characteristics. It’s a tree that cannot easily be categorized. It’s a conifer but looks and behaves in certain ways like a broadleaf tree as its leaves turn yellow and are shed in the fall; it appears to have one leaf or a leaf with two lobes but in fact has many needles fused into one; it’s strong and adaptable but also slow growing and sensitive; young tree are only male or female but older specimen can be bi-sexual. The tree now only grows in the wild in eastern China and has been disseminated in temperate climates across the world for ornamental purposes, but millions of years ago the Ginkgo covered vast areas across Earth, including the western US.




Old European folklore celebrated the tree as a sign of resilience and wisdom, given its survival over millions of years, and as a species signifying unity and reconciliation because of how it combines two different appearances, as expressed in the single bilobate leaf, its conifer and broadleaf character, and its bisexuality. When Jan-Willem Jansens started a precursor to Ecotone in 1998, the unique characteristics of this tree were a great inspiration to him.The aspects of resilience and (re)conciliation are key aspects of ecological approaches to healing our landscapes on Earth, as described by authors such as E.O. Wilson and Courtney White, who informed and inspired Ecotone’s work approach.   

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