What Hudsonia does

Hudsonia Ltd is a 501(c)(3) nonprofit environmental science organization founded around 1980 by three regional ecologists and headquartered at the Bard College Field Station in Annandale, New York. It conducts applied field biology and ecological survey research across the Hudson Valley, Catskill Mountains, and New York Metropolitan region, producing biodiversity surveys, habitat assessments, Natural Resource Inventories, expert review of environmental documents, and educational workshops for municipalities, land trusts, conservation NGOs, and private landowners. Its core technology combines field biology with GIS-based habitat mapping (including the Dutchess County Habitat Mapper interactive portal), remote sensing, species surveys across taxonomic groups, and a digital archive of more than 40 years of survey data and 6,000+ herbarium specimens.

The organization's offerings are organized under the Biodiversity Resources Center (BRC), which functions as the public-facing gateway for planning boards, agencies, and conservation professionals. Hudsonia maintains a non-advocacy stance that positions it as a neutral scientific voice in land-use disputes, and it runs long-running programs including the Saw Kill glass eel citizen science survey (active since 2003 and integrated into the NYSDEC network) and the 'Best Management Practices for Priority Invasive Plants in the Lower Hudson Valley' for LHPRISM. Revenue is generated through a mix of sliding-scale fees for technical services to municipalities and land trusts, individual donations, foundation and government grants, and corporate sponsorships via 1% for the Planet (joined February 2026); pricing for commissioned services is negotiated per engagement rather than published as standard rate cards. Distribution is primarily direct and relationship-based — commissioned engagements, in-person workshops, and open-access publications and datasets via hudsonia.org — and the organization reports mapping or surveying more than 2,000 square miles in total.

Name

Hudsonia

Legal name

Hudsonia Ltd

Website

https://hudsonia.org

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

1–10 employees

Short description

Hudsonia Ltd is a 501(c)(3) nonprofit environmental consulting organization founded circa 1980 that conducts applied field biology, habitat mapping, and biodiversity research for municipalities, land trusts, and conservation NGOs across the Hudson Valley and Catskills.

Ownership category

akta.pro rank

Product category

Environmental Consulting

NAICS

Environmental Consulting Services (54162), Support Activities for Forestry (1153)

SIC

Services-Commercial Physical & Biological Research (8731), Services-Membership Organizations (8600)

akta.pro primary industry

Biodiversity & Habitat Conservation (BPAGAGAA)

akta.pro secondary industries

Biodiversity Baseline Studies & Long-Term Monitoring Programs (EUAHAHAE), Terrestrial Ecology & Habitat Surveys (EUAHAHAA), Threatened & Endangered Species (TES) / Protected Species Surveys & Compliance (EUAHAHAD), Natural Resource Inventory & Forest/Woodland Assessments (Timber, Vegetation, Invasives) (EUAHAHAG)

Keywords

• Environmental consulting
• Habitat assessment
• Biodiversity surveys
• Natural resource inventories
• Conservation research

Headquarters

HQ city

Annandale

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Donations and Charitable Contributions: Individual donors contribute to support Hudsonia's scientific research and conservation mission. Hudsonia is a 501(c)(3) tax-exempt nonprofit organization.
2. Grants and Foundation Funding: Funding from foundations and government agencies supports specific research projects and operational costs. The organization actively pursues grant funding for digitization, archiving, and conservation research.
3. Fees for Technical Services: Hudsonia charges municipalities, land trusts, and private landowners for biodiversity surveys, habitat assessments, technical document reviews, and Natural Resource Inventories. A sliding scale is offered for communities with fewer resources.
4. Sponsorships (1% for the Planet): Hudsonia joined 1% for the Planet, connecting with businesses that commit 1% of revenue to environmental causes, generating sponsorship income.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels8 records

Core offering

Hudsonia Ltd provides field-based ecological consulting services including biodiversity surveys, habitat assessments, Natural Resource Inventories (NRIs), and GIS-based habitat mapping for municipalities, planning boards, land trusts, conservation NGOs, and private landowners in the Hudson Valley and New York region. The organization also runs the Biodiversity Resources Center (BRC), an umbrella program for habitat mapping and education, and the long-running Saw Kill glass eel citizen science monitoring project.

Product overview

Hudsonia Ltd offers a suite of conservation science services focused on biodiversity research and education in the Hudson Valley region. The core offerings include the Scientific Services program (biodiversity surveys, habitat assessments, and technical assistance), the Biodiversity Resources Center (BRC) as an umbrella for habitat mapping and education, Habitat Maps and Reports with Natural Resource Inventories, educational workshops, fact sheets, the Glass Eel Survey citizen science project, and Open Access Data Sets. These products work together to provide comprehensive field biology services that translate ecological data into practical conservation strategies for land-use decision-makers.

Differentiator

Problem solved

Functional benefit

Brands

• Biodiversity Resources Center (BRC): The umbrella for Hudsonia's habitat mapping and education programs, serving as the most direct route for planning boards, governmental agencies, land trusts, and other conservation NGOs to access Hudsonia's services.

Products and services

• Scientific Services Biodiversity surveys, habitat assessments, and technical assistance for public agencies, NGOs, landowners, and private parties. Includes original field research, rare species surveys, and review of environmental assessment documents.
• Biodiversity Resources Center (BRC) Umbrella program for habitat mapping and education programs that promotes protection of species, habitats, and ecosystems by providing biological information to agencies and individuals involved in land development and conservation decisions.
• Habitat Maps and Natural Resource Inventories (NRIs) Townwide and regional projects identifying and mapping habitats of special ecological importance, including Natural Resource Inventories covering geology, soils, groundwater, streams, lakes, farmland, and scenic areas with stewardship recommendations.
• Workshops and Education Programs Webinars, in-person courses, and workshops for municipal leaders, landowners, land trusts, and community groups covering biodiversity conservation and land use planning.
• Glass Eel Survey (Citizen Science Project) Annual citizen science project monitoring juvenile American eels (glass eels) migrating from the Sargasso Sea up the Hudson River tributaries, conducted at the Bard College Field Station.
• Technical Assistance Expert consultation for state and local agencies, NGOs, and individuals including biological assessments, rare species surveys, and review of environmental assessment documents using a sliding scale for communities with fewer resources.
• Open Access Data Sets and Herbarium Archive Digitized and archived data from surveys and herbarium specimens including vegetation analysis, snapping turtle studies, Blanding's turtle radio-tracking data, fen reports, and herbarium collections with over 6,000 catalogued vascular plant specimens.
• Dutchess County Habitat Mapper Interactive web map portal providing public access to Hudsonia's habitat maps for Dutchess County, used by regional land-use decision makers.

Quantifiable outcome

• 2,000+ square miles mapped or surveyed and in use by regional land-use decision makers
• +3 more outcomes

Named customers9 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Twelve partnerships are on record, tiered minor, major and core.

• 1% for the PlanetminorGTM or Marketing Partner · 18 February 2026Hudsonia joined 1% for the Planet as an environmental partner in February 2026. The network connects businesses committed to donating 1% of revenue to vetted environmental organizations, providing Hudsonia with exposure to new donor and corporate sponsorship channels.
• Applied Farmscape Ecology Research Collaborative (AFERC)majorStrategic or Co-development Partner · 1 January 2018AFERC is co-coordinated by Hawthorne Valley Farmscape Ecology Program and Hudson Valley Farm Hub. Hudsonia and Jason Tesauro Consulting began analyzing wood turtle farm hazards in 2018 in collaboration with AFERC. The project develops buffer management recommendations to reduce farm equipment mortality of wood turtles.
• New York State Department of Environmental Conservation (NYSDEC)coreStrategic or Co-development Partner · 1 January 2008Hudsonia's Saw Kill glass eel monitoring site, established in 2003 by co-founder Robert Schmidt, became part of the NYSDEC citizen science project in 2008. The Saw Kill is one of approximately 14 sites monitored annually. Hudsonia collaborates on data collection and contributes to statewide eel population monitoring.
• Bard CollegecoreStrategic or Co-development PartnerHudsonia is partnered with Bard College at the Bard College Field Station on South Tivoli Bay in Annandale, NY. The field station provides Hudsonia's primary operational base. This partnership is foundational to the organization's ability to conduct field research, host volunteers and interns, and maintain its herbarium and datasets.
• Hudson River National Estuarine Research Reserve (HRNERR)coreStrategic or Co-development PartnerHRNERR coordinates the broader Hudson River eel monitoring network. Hudsonia's Saw Kill site is part of the HRNERR citizen science framework. HRNERR also publishes reports on eel monitoring data and provides administrative support for the program.
• Cornell University / NYSDEC Hudson River Estuary ProgrammajorStrategic or Co-development PartnerHudsonia partners with Cornell University's Hudson River Estuary Program and NYSDEC Hudson River Estuary Program on workshops, webinars, Natural Resource Inventories, and the Forest Condition Index. Multiple co-presented workshops address wetlands, headwater streams, and municipal training.
• Cary Institute of Ecosystem StudiesmajorTechnology or IntegrationHudsonia collaborated with the Cary Institute on a report covering 25 fens — critical habitats for rare species. The Cary Institute contributes ecological expertise to Hudsonia's research network.
• Hawthorne Valley Farmscape Ecology ProgrammajorStrategic or Co-development PartnerHudsonia co-authored 'From the Hudson to the Taconics: An Ecological and Cultural Field Guide to the Habitats of Columbia County, New York' with Hawthorne Valley Farmscape Ecology Program. The two organizations also co-present workshops on field guide topics.
• Raritan Headwaters AssociationminorStrategic or Co-development PartnerKristi MacDonald, now Hudsonia's Science Director, spent a decade as Director of Science at Raritan Headwaters. Hudsonia maintains collaborative relationships with the organization on regional conservation research.
• Lower Hudson Partnership for Regional Invasive Species Management (LHPRISM)majorStrategic or Co-development PartnerHudsonia prepared the 'Best Management Practices for Priority Invasive Plants in the Lower Hudson Valley' for LHPRISM, with updated editions in 2016 and 2025. This partnership supports regional invasive species management coordination.
• Greene County Planning BoardminorChannel Partner/ Reseller/ DistributorGreene County Planning Board honored Hudsonia alongside Greene Land Trust and Cornell Cooperative Extension for contributions to county natural resource planning.
• New York-New Jersey Harbor & Estuary ProgramminorStrategic or Co-development PartnerThe NY-NJ Harbor & Estuary Program honored Hudsonia for contributions to regional conservation and estuary research.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Scenic Hudson: A regional land conservation and advocacy nonprofit headquartered in the Hudson Valley, focused on land protection and habitat stewardship across the same geography as Hudsonia. Directly comparable as a regional environmental NGO targeting municipalities and land-use decision makers in the Hudson Valley.
• Cary Institute of Ecosystem Studies: An independent ecological research nonprofit based in Millbrook, NY (Hudson Valley) conducting long-term ecosystem research and partnering with Hudsonia on fen reports. Closely comparable in mission (basic/applied field ecology), funding model (nonprofit grants), and regional focus.
• Raritan Headwaters Association: A regional watershed conservation nonprofit in New Jersey whose former Director of Science (Kristi MacDonald) is now Hudsonia's Science Director. Directly comparable as a habitat/watershed assessment and conservation nonprofit serving municipalities and landowners with ecological field services.

Broad incumbents

• Defenders of Wildlife: A national wildlife conservation nonprofit focused on imperiled species and habitat protection. Comparable in mission around biodiversity and threatened species (Hudsonia conducts Blanding's turtle and other rare-species work), but operates nationally and through advocacy rather than local technical assistance.
• The Nature Conservancy (NY Chapter): The largest global conservation nonprofit with deep NY operations. Comparable as a habitat/conservation nonprofit using science to inform land protection, but operates at vastly larger scale and on a global footprint rather than a regional Hudson Valley focus.
• Audubon New York: The state chapter of the National Audubon Society, a major bird and habitat conservation nonprofit operating across New York. Comparable as a conservation science and education nonprofit, but with broader geographic scope, advocacy orientation, and significantly larger membership infrastructure.
• Center for Biological Diversity: A national nonprofit working to protect endangered species and wild places through science, policy, and litigation. Comparable in biodiversity and threatened-species focus, but operates through advocacy/legal channels rather than the technical field-assistance and NRI work that defines Hudsonia.
• Wildlife Conservation Society: A global wildlife conservation organization (operator of Bronx Zoo and other NY facilities) that has employed Hudsonia's current Science Director (Kristi MacDonald) in the past. Comparable in biodiversity research and habitat conservation mission, but operates globally and at much larger scale.

Emerging players

• New York Flora Association: A New York State nonprofit dedicated to documenting and conserving the state's flora; awarded Hudsonia its 2023 Plant Conservationist Award. Comparable as a niche botanical/conservation nonprofit with overlapping audience but smaller scale and an exclusively botanical focus.

Regional players

• Scenic Hudson Land Trust: A regional land trust affiliated with Scenic Hudson that uses Hudsonia's habitat maps and NRIs to guide acquisition and stewardship decisions. Comparable as a regional Hudson Valley land-protection organization that consumes Hudsonia's ecological data products in its land-use decisions.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/hudsonia-limited
• Instagraminstagram.com/hudsonialtd/?hl=en

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Hudsonia