Citizen science contributing to biodiversity monitoring: a French experience - Romain Julliard - Trees4Future
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Citizen science contributing to
biodiversity monitoring:
a French experience
Romain Julliard
Why being concerned by the fate of
ordinary nature?
(from a conservation biologist point of view)
• Common species are good indicators
• Appropriate for studying global changes
• The general public is interested
=> Biodiversity monitoring
Scientists + Citizen ! Scientists alone….
Monitoring scheme: a matter of
trade-offs
(1) Observer network :
Skills vs numbers
(2) Sampling design:
Better representativity, but
send observers where they do not chose to go
=> (3) Simple Protocole
The French Breeding Bird Survey:
Animations locales :
Plan d’échantillonnage :
> 2000 carrés
suivis au moins
une fois entre
1989 et 2015
L’indicateur STOC
Gradient thermique : ‐ 0.4 °C pour 100 km vers le nord
Climat: Communautés
250 km d’oiseaux:
90 km
(1989‐2006)
Common bird
Bats
Butterfly
Skilled amater schemes
Flore commune
Vigie Nature- Museum National d’Histoire NaturelleSchemes open to
‐ Observatoire des Papillons des
anyone
Jardins
‐ Opération Escargots
Avec Noé Conservation
Avec Téla‐Botanica
Suivi Photographique des
Insectes Pollinisateurs
Avec l’OPIE
Avec la LPO
Avec Planète MerSuivi Photographique des Insectes POLLinisateurs
A flower‐dwelling Insects
Survey ?
Pollination, a degraded ecological function (and
service)
Pollination : diversity matters
Multi‐factor pressure : climate warming,
urbanisation, agriculture intensificationA flower‐dwelling Insects
Survey ?
Many sampling sites required, but very few
specialists
a few thousands flower‐dweling insects in France!!
A solution : a survey based on amateur
photographsHave fun ! First step A 20 minutes safari‐photo
20 minutes
Have fun ! Step 2 Go through your pictures and select 1 per species that you can distinguish
Have fun ! Step 3 Found a name for each selected insect… among 600!
Online Identification key for insects
r pictures: Found in the online guide:
Le syrphe ceinturé
Les chloropides
jaunesHave fun ! Step 4 Share your collection on the Internet and comment collections of other participants
icipants are encouraged to check others’ identification
entifications are eventually checked by experts Alexis Borges Lepidoptera Mathieu de Flores Arthropoda Serge Gadoum Hymenoptera, Syrphidae Hervé Guyot Arthropoda
Data can be browsed by anyone
Some results
Data distribution uis 2010 0 regular participants 000 collections 0,000 photos
Who are the observers?
me skills
Beginners in
taking
biodiversity
tosParticipants are learning
% correct identification
Rank of the collectionThe most frequent insect :
The Honney Bee
852 photos pour 2010Wild bees 2010 : 3 527 photos,
that is, 80% of all beestat characterization at sampling sites
e land-use types within 1km
nd each collection:
ban % farmland % naturals
Compared to other collections
within 100 km
culate for each species,
ihood of appearance as a 100 km
ction of relative % habitataverage, common
linating species
Habitat affinity
oid cities and tend
favor farmland
urban farmland naturalsInsect affinity for urban
landscape
ly hymenoptera
erate cities
Habitat affinityHymenoptera affinity
for urban landscape
few solitary bees Mégachilides
Habitat affinity
tually enjoy city
e!
Anthidium
sawflye rarer pollinators
Habitat affinity
en more avoid cities,
t strongly favor the
re natural habitats
urban farmland naturalsRaisons for success Motivation to participate: – > contribute to science – > self-learning ! Before, in my garden, there were only butterflies, now, there are painted laidies, red admirals, swallowtails »
unteers to Vigie‐Nature Citizen‐science programs
Do you think your
biodiversity knowledge …
… did not increase
… increases and reached a
maximum
… increased and can increase
more
Lay Expert
Self‐reported level before volunteering
Self‐reported knowledge acquisition for lay‐peopleNichoirs à
abeilles solitaires
Placettes «Vers
de terre »
Planches
«invertébrés
terrestres »Offer teachers to participate to Vigie Nature while
implementing the official school program
- Biodiversity education through experience
- Science education through participation
11-2012 : adaptation of 3 schemes for implementing the
hool program (11-15 years old)
=> 9 interdisciplinary course with associated> Tested by 80
classes (1900
children) in 2012-
2013 and between
200 and 400 since
each year.2015 - 2019
Merci de votre attention
Julliard@mnhn.frThe issue of data quality…
Precision (observers skills)
Repeatability (stick to the protocole)
Representativity (sampling design, post‐
stratification)Ex: « I’ve seen three
whites in my garden »
Protocole : « maximum number
of individuals seen
simultaneously »
cies assemblage:
leues
eacock
eadow brown 100- 300 m2
other species not seen No fongicide
Part of lauwn unmowed
Less than 100m from a forestEx: « I’ve seen three
whites in my garden »
Protocole : « maximum number
of individuals seen
simultaneously »
cies assemblage:
leues
eacock
eadow brown 100- 300 m2
other species not seen No fongicide
Part of lauwn unmowed
Less than 100m from a forestEx: « I’ve seen three
whites in my garden »
Protocole : « maximum number
of individuals seen
simultaneously »
cies assemblage:
leues
eacock
eadow brown 100- 300 m2
other species not seen No fongicide
Part of lauwn unmowed
Less than 100m from a forestEx: « I’ve seen three
whites in my garden »
Protocole : « maximum number
of individuals seen
simultaneously »
cies assemblage:
leues
eacock
eadow brown 100- 300 m2
other species not seen No fongicide
Part of lauwn unmowed
Less than 100m from a forestr solution : participatory monitoring scheme
-Cost / Benefit
- Legitimity
Volunteer
Observer network
Validation
- Cost / Benefit
Data - Quality control
Coordination :
Animation / Researchdiversity monitoring: But a complex
a simple equation organization
Observers Animation
network
+ Conception
Field methods
=
Data Analysisdiversity monitoring: But a complex
a simple equation organization
Observers Animation
network
+ Conception
Field methods
=
Data Analysisrspectives
Propose new activities !
Studying parasitism rate around Paris
Cotesia glomeratarspectives
Studying parasitism rate in 30 gardens
around Paris
Taux de parasitisme
% urbanisationYou can also read
