Quadra Island: clam gardens and tended coastal landscapes - History, Government, Language, and Sources

Download PDF creates a visual, rasterized copy. Use Print for selectable text and better assistive-technology support.

Pacific Coast North American Worlds: Coastal Communities, River Networks, and Living Homelands
Coastal British Columbia (orientation only) · Source-reviewed profile

Quadra Island: clam gardens and tended coastal landscapes

Reviewed community and place names are preserved where supported; no otherwise unknown ancient self-designation is invented.

The original study combines samples and changing sea level; different methods and disturbed deposits complicate construction dates. SFU's collaborative project describes intertidal terraces that expanded clam habitat, not untouched wilderness.

Intertidal cultivation and landscape context Approximately 3500 years ago–1700 CE; later disruption and restoration distinguished Radiocarbon and sea-level analysis, ecological research and Indigenous collaborative knowledge Campbell River, British Columbia, Canada (orientation only): approximate public-town or distant institutional orientation, not an excavation, burial, sacred-site, private compound or vulnerable-deposit location; never a territorial, ethnic, linguistic, cultural, political, religious, sovereignty, fishing, farming, water-rights or route boundary. The orientation may be far from the archaeological context. No access, collecting or travel permission is implied.
Overview

Coastal households, river connections, and the evidence

Coastal, island, estuary, and river connections

Campbell River, British Columbia, Canada is a modern orientation, not an ancient capital or boundary. House-group management and changing local practices must not become a claim that every beach had one owner or one coastal government.

Political organization and community scale

House-group management and changing local practices must not become a claim that every beach had one owner or one coastal government. Clam-garden dates are difficult and method-dependent; archaeological evidence does not authorize harvesting, ownership or restricted knowledge claims.

Later transformation, living heritage, and modern reception

Living communities and heritage institutions retain their own authority; this atlas cannot establish identity, ancestry, descent, recognition or membership. Laich-kwil-tach and Coast Salish community contexts are distinct; a garden wall does not identify every builder's language. Later colonial, research, reconstruction and stewardship events are dated separately from the main archaeological context.

Dating limits The original study combines samples and changing sea level; different methods and disturbed deposits complicate construction dates.

Brief DNAGENICS AI-assisted paraphrase of registered evidence, not author or community endorsement. Retain chronological, sampling and interpretive limits.

Source review: 2026-10-20 [S1]
Built food landscapes SFU's collaborative project describes intertidal terraces that expanded clam habitat, not untouched wilderness.

Brief DNAGENICS AI-assisted paraphrase of registered evidence, not author or community endorsement. Retain chronological, sampling and interpretive limits.

Source review: 2026-10-20 [S2]
Stewardship comparison Lepofsky's Xwe’etay account explains tending and present restoration as a separate regional comparison, not proof of identical histories everywhere.

Brief DNAGENICS AI-assisted paraphrase of registered evidence, not author or community endorsement. Retain chronological, sampling and interpretive limits.

Source review: 2026-10-20 [S3]
Historical sequence

A concise, sourced timeline

These milestones are orientation points, not a complete history.

  1. Early garden evidence

    The original study proposes this antiquity for sampled contexts with explicit dating qualifications.

    [S1]

  2. Changing shorelines and tending

    The collaborative project describes adjustment of gardens as coastal conditions changed.

    [S2]

  3. Colonial disruption

    The project relates reduced construction to multiple consequences of colonization, not cultural extinction.

    [S2]

  4. Published dating study

    Researchers evaluated multiple dating approaches and excluded samples that could not securely date garden use.

    [S1]

  5. Collaborative stewardship

    SFU reports work involving First Nations and researchers; the atlas is not a partner in that project.

    [S2]
Culture and language

Foodways, craft, household work, and tended landscapes

Languages named in this profile

  • Laich-kwil-tach and Coast Salish community contexts are distinct; a garden wall does not identify every builder's language.

Language family: Language, material classification, political allegiance, residence and living identity are distinct; this record does not classify every ancient speaker.

Research focus: Radiocarbon and sea-level analysis, ecological research and Indigenous collaborative knowledge.

House-group management and changing local practices must not become a claim that every beach had one owner or one coastal government.

Clam-garden dates are difficult and method-dependent; archaeological evidence does not authorize harvesting, ownership or restricted knowledge claims.

No artifact, sacred-site, burial or human-remains imagery or restricted knowledge is reproduced.

DNAGENICS provides AI-assisted, source-checked educational paraphrases. Cited authors, institutions and communities did not author or endorse this atlas. Public availability does not establish cultural consent or permission to reproduce objects, sacred knowledge or human remains. No imagery is reproduced. Specialist and community review is recommended; use the website contact channel for corrections, rights concerns or removal requests.

AI research guide

Ask about this reviewed profile

The guide can explain and connect facts already present on this page. It cannot search the open web, establish identity or citizenship, or evaluate ancestry and genetic information.

Grounded in approved profile content Citations use the source IDs below No account or DNA context

AI-generated interpretation of genetic similarity, not proof of ancestry. Informational only, not professional advice.

Read full notice

Before you continue: the analysis you are about to generate is produced by an AI model. AI output can be incomplete, inaccurate, or simply wrong. It describes statistical genetic similarity to reference populations and is not proof of ancestry, ethnicity, identity, or descent. It is provided for informational and educational purposes only, and is not medical, diagnostic, genealogical, legal, or other professional advice. Do not rely on it to make health, financial, legal, or family decisions. To the fullest extent permitted by applicable law, DNA Genics, S.L. accepts no liability for any loss or decision arising from your use of this AI output.

Do not enter names, contact details, family-tree information, account or kit identifiers, or genetic data.

Evidence register

Sources used for this page

Prefer Indigenous governments, museums, heritage organizations, accountable field projects and public heritage institutions. Give source title, author or organization, date and stable link. Brief summaries are DNAGENICS AI-assisted interpretations, not author or community endorsement, reproduction permission or community review.

  1. C1

    About the Makah Cultural and Research Center

    Makah Cultural and Research Center · Institutional research, heritage interpretation or community account; brief attributed paraphrase · Undated institutional record; consulted 2026-10-20

  2. C2

    3500 years of shellfish mariculture on the Northwest Coast of North America

    Nicole F. Smith and coauthors; PLOS ONE · Institutional research, heritage interpretation or community account; brief attributed paraphrase · 2019-02-27

  3. C3

    Reevaluating the antiquity of the Palmrose site

    Gabriel M. Sanchez; PLOS ONE · Institutional research, heritage interpretation or community account; brief attributed paraphrase · 2021-08-17

  4. C4

    Historic Timeline

    Musqueam Teaching Resource; Musqueam and UBC Museum of Anthropology · Institutional research, heritage interpretation or community account; brief attributed paraphrase · Undated institutional record; consulted 2026-10-20

  5. C5

    History

    Federated Indians of Graton Rancheria · Institutional research, heritage interpretation or community account; brief attributed paraphrase · Undated institutional record; consulted 2026-10-20

  6. C6

    History

    Santa Ynez Band of Chumash Indians · Institutional research, heritage interpretation or community account; brief attributed paraphrase · Undated institutional record; consulted 2026-10-20

  7. C7

    Gwaii Haanas Management Plan 2018

    Parks Canada · Institutional research, heritage interpretation or community account; brief attributed paraphrase · 2018

  8. C8

    Collaborative digital curation and recursive publics: The making of Sq’éwlets

    Project team; Museums and the Web · Institutional research, heritage interpretation or community account; brief attributed paraphrase · 2018

  9. S1

    3500 years of shellfish mariculture on the Northwest Coast of North America

    Nicole F. Smith and coauthors; PLOS ONE · Institutional research, heritage interpretation or community account; brief attributed paraphrase · 2019-02-27

  10. S2

    University-community collaboration extends reach of ancient clam gardens

    Simon Fraser University · Institutional research, heritage interpretation or community account; brief attributed paraphrase · 2021-09-01

  11. S3

    Clam Gardens of Xwe’etay

    Dana Lepofsky; Simon Fraser University · Institutional research, heritage interpretation or community account; brief attributed paraphrase · Undated institutional record; consulted 2026-10-20

Sources and names remain the property of their respective publishers and communities. Their inclusion is for citation and education; it does not imply endorsement of DNAGENICS. Summaries are original editorial paraphrases and should be checked against the linked source for important use.

Editorial review: October 20, 2026

Continue exploring
Coastal British Columbia (orientation only) c̓əsnaʔəm: Musqueam history and the changing Fraser delta Reviewed community and place names are preserved where supported; no otherwise unknown ancient self-designation is invented. Read profile Coastal British Columbia (orientation only) Gwaii Haanas: changing shores and Haida stewardship Reviewed community and place names are preserved where supported; no otherwise unknown ancient self-designation is invented. Read profile Coastal British Columbia (orientation only) K’ómoks and Comox Harbour: fishing landscapes and heritage care Reviewed community and place names are preserved where supported; no otherwise unknown ancient self-designation is invented. Read profile
Use code for 35% off • Expires Nov 01