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Environment · Citizen science · Citizen science · Lyon

Street tree mapping in La Guillotière

How would you like to take part?

Knowing where trees are, and where they are missing, helps plan shade.

Understand the issueAsk or contributeWeigh the argumentsHelp build itSee what happened
  1. Draft
  2. Submitted
  3. Under review
  4. Open for discussion
  5. Developing
  6. Proposal
  7. Prioritisation
  8. Decision / recommendation
  9. Implementation
  10. Monitoring
  11. Completed
  12. Evaluation

What this is: Community idea

Written by residents. It carries no official status.

Who decides: Nobody has decided anything yet. A community idea can become a recommendation through a group or assembly; only the organisation with authority can make an authorised decision, and it must record it here.

You are discovering this initiative

  1. Discover
  2. Understand
  3. Ask
  4. Contribute
  5. Discuss
  6. Deliberate
  7. Propose
  8. Collaborate
  9. Prioritise
  10. Decide
  11. Implement
  12. Monitor
  13. Evaluate
  14. Continue
Follow · 16Support · 29I would help build it · 14 ShareCalendar (.ics)

Understand

Overview

Knowing where trees are, and where they are missing, helps plan shade.

Understand first, then take part: ask a question or add what you know →

Participate

Deliberation (3)

Questions (1)

  • Question A resident (collected by Jean-Marc O.) 2026-08-12 · At a meeting

    When will we know whether the proposal is eligible?

Arguments (0)

None yet.

Evidence (0)

None yet.

Concerns (0)

None yet.

Alternatives (0)

None yet.

Common ground (0)

None yet.

Unresolved issues (0)

None yet.

Experiences, opinions & suggestions (2)

  • Suggestion Odile C. 2026-07-12

    Start with a one-month trial using removable furniture.

    6 agree · 1 disagree · 1 unsure

  • Personal experience A resident (collected by Raphaël D.) 2026-07-25 · With a facilitator

    My children’s school is next door; parents have raised it at every meeting.

Consensus map

Broad agreement (1)

70 % or more of respondents agree

  • Start with a one-month trial using removable furniture.8 responses · Suggestion

Partial agreement (0)

50–69 % agree

    Disagreement (0)

    under 50 % agree and at least 30 % disagree

      Needs more information (0)

      40 % or more unsure, or no clear pattern

        Not enough responses yet (0)

        fewer than 8 responses

          How this is calculated. Only statements (arguments, concerns, alternatives, suggestions, common ground) can be weighed, once per person, as agree, disagree or unsure. Shares are of the people who responded to that statement — not of residents, and not of everyone on the platform. Popularity is not truth: a statement with broad agreement can still be wrong, and a minority concern can be decisive. Nothing here is a vote or a decision. Full methodology

          People & project

          Find people to build this with you

          • 5 people in Lyon are interested in this subject
          • 8 have skills this needs (Facilitation, Event logistics, Project management, Design)
          • 0 have organised events before
          • 0 local Cercles discuss related subjects

          Counts include everyone whose profile is visible to members; only people who chose to be visible to you appear below. Nobody’s location is shown beyond their city.

          Jean-Marc O.Community gardener and bird counterLyonGardeningBirdwatchingCitizen scienceLooking to: find a group to belong toYou share: Citizen science, BirdwatchingJustine Z.Cooks for too many peopleLyonBakingVegetarian cookingCheese & terroirLooking to: share a skillYou share: Citizen scienceNadia K.Parent of two, organiser by necessityLyonIntergenerationalGardeningBoard gamesLooking to: find a group to belong toYou share: BiodiversityRaphaël D.New in town, curious about everythingLyonBoard gamesWelcoming newcomersLanguagesLooking to: learn somethingThomas F.Parent of two, organiser by necessityLyonIntergenerationalParentingLibrariesLooking to: find a group to belong toVictor D.Ceramicist with an open studioLyonSewingCeramicsGalleriesLooking to: share a skillYasmine D.Weekend hiker, weekday engineerLyonMountainsStargazingForestsLooking to: travel with othersYou share: Citizen science, Stargazing

          The team

          No project team yet.

          Volunteer roles

          Photographer for the outcome storyLyon · A few sessions · 0 of 2 places open · visitors welcomeHomework helperLyon · 2 hours a week · 10 of 10 places open

          Resources needed

          Observations & dataset

          48Observations
          18Verified by the programme
          30Submitted, not yet verified
          20Observers
          ObservationRecordsVerifiedAverage value
          Tree in poor health1863.9
          Empty tree pit1782.9
          Tree recorded1344.0

          Submitted observations are shown separately from those verified by the organisation running the programme. This dataset is participatory: it shows what volunteers recorded, not an official measurement.

          Process & meetings

          Meetings

          No meeting yet.

          Response

          No response published yet. When the responsible organisation answers, it appears here with its status, actions, timeline and next steps — and everyone following is notified.

          The chain: public contribution → responsible organisation → review → response → action → implementation → outcome. A response is not a decision unless it is recorded as one by the organisation with authority.

          Implementation

          1. Protocol
          2. Training
          3. Observation season
          4. Dataset published
          5. Results
          59%Progress

          No implementation updates yet.

          Community monitoring

          Follow progress, ask questions, give feedback, report problems, submit evidence, suggest improvements.

          Outcome

          No outcome yet. When it is completed, the outcome is documented here: what was asked, answered, built and learnt.

          Continue

          Start the next initiative from this one

          Network

          1. People60 taking part
          2. OrganisationStreet tree mapping in La Guillotière — volunteer network

          History on the record

          1. Submitted — Published; waiting to be read.
          2. Under review — Moderators or the responsible organisation are reading it.
          3. Open for discussion — Questions, evidence, arguments and alternatives are welcome.
          4. Developing — People are working the idea into something buildable.
          5. Proposal — A structured plan with costs, risks and outcomes.
          6. Prioritisation — Where the process allows, people help set priorities.
          7. Decision / recommendation — A recommendation is made, or an authorised body decides.
          8. Implementation — It is being built, run or carried out.

          Local discovery profile

          Get the participation briefing for your city

          One email a month: new initiatives, meetings and outcomes near you. No political profiling — you choose the subjects.

          1. You tell us what you are looking for.
          2. A person — the organiser, host or our team — answers by email.
          3. You meet in person, when you are ready.