Licht en vleermuizen - KNAW · 2019. 1. 31. · Marcel E. Visser Frank Berendse . Title: PowerPoint...
Transcript of Licht en vleermuizen - KNAW · 2019. 1. 31. · Marcel E. Visser Frank Berendse . Title: PowerPoint...
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Kamiel Spoelstra
Gemeente Amsterdam, 21 januari 2019
Licht en vleermuizenOver de effecten van nachtelijk licht op vleermuizen, en hoe deze afhangen van het spectrum
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NASA Earth Observatory images by Joshua Stevens
83% World99% US and EU
Falchi et al 2016 Sci. Adv.
~2% increase/yearKyba et al. 2017 Sci. Adv.
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Glare
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Sky glow
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physiology
behaviour
life-history traits
fitness
light at night
population of focal species
environment
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Stone et al. 2012 GC Biol.
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?South Limburg,The Netherlands
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Prevent light:
• Lower intensity• Shield and direct• Time restrict light
Change light: Adapt the spectrum
LoNNe COST action
Azam et al. 2016 GC Biol.
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Prevent light:
• Lower intensity• Shield and direct• Time restrict light
Change light: Adapt the spectrum
Spoelstra et al. 2015 Phil. Trans. R. Soc. B
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8 replicates
2011, 2012 - nu
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Jip Ramakers Ilse ScholtenSalome van ‘t Riet
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not abundant2.4 rec/night/site
Abundant>600 rec/night/site
Common~70 rec/night/site
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dark white green red
tota
l passes*t
ransect-1
(e
st. ±
1 s
.e.m
.)
0
20
40
60
80
100
120
AA B B
Spoelstra et al. 2017 Proc. B
dark white green red
tota
l passes*t
ransect-1
(e
st. ±
1 s
.e.m
.)
0.0
5.0e+3
1.0e+4
1.5e+4
2.0e+4
2.5e+4
3.0e+4
ACA B BC
dark white green red
tota
l passes*t
ransect-1
(est. ±
1 s
.e.m
.)
0
200
400
600
800
1000
1200
1400
1600
1800
AA A A Pipistrellus sp. (with lights off)
dark white green red
tota
l passes*t
ransect-1
(est. ±
1S
EM
)
0
100
200
300 AA A A
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Donners et al. 2018 J. Ecol. Int. Phys. Stone et al. 2015 Phil. Trans. R. Soc.
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Pipistrellus sp. (during insect sampling)
dark white green red
tota
l passes*t
ransect-1
(est. ±
1S
EM
)
0
5e+2
1e+3
2e+3
2e+3
BA A A
Insects
dark white green red
log
are
a (
mm
2)
(est. ±
1S
EM
)
0
1
2
3
4
CA B B
Pipistrellus sp.
dark white green red
tota
l p
asse
s*t
ran
se
ct-1
(e
st. ±
1S
EM
)
0
5e+3
1e+4
2e+4
2e+4
3e+4
3e+4
ACA B BC
Spoelstra et al. 2017 Proc. B
Kim Ferguson
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Zeale et al. 2018 GC Biol.
Zeale et al. 2018 GC Biol.
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keuze tussenlichtkleuren?
Jip Ramakers
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foraging area
roosts
Google Maps (2018)
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Natalie van Dis
Jan-Martijnvan der Stouwe
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night 1
2
3
4
5
6
7
8
…
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2 Jul 15 Jul 1 Aug 15 Aug
Passin
g b
ats
* n
igh
t-1
0
25
50
75
100
125 Culvert West
Culvert East night 1
2
3
4
5
6
7
8
…
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2 Jul 15 Jul 1 Aug 15 Aug
Passin
g b
ats
* n
igh
t-1
0
25
50
75
100
125 Culvert West
Culvert East
Kuijper et al. 2005 Lutra
Passing batslight treatment
dark white green red
Passin
g b
ats
* n
ight-1
(avera
ge ±
1 s
.e.m
.)
0
20
40
60
Passing batsper culvert over time
2 Jul 15 Jul 1 Aug 15 Aug
Passin
g b
ats
* n
ight-1
0
25
50
75
100
125Culvert West
Culvert East
Spoelstra et al. 2018 J. Exp. Zool. A
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Downs et al. 2003
Laidlaw & Fenton 1971
Boldogh et al. 2007
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Martijn Broekman
Gerrit Tuinstra
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Hutterer et al. 2005
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Light intensity?
Light Intensity
Activity
0.0
1.0
Hale et al. 2015 – GC Biol.
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mm
m
m
m
m
Lighton
Landscape
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The CHIROLUM project
Kévin Barré Clémentine Azam
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*
(avoid green except for migrating birds above a dark sea)
• Use warm white light (3000 K or less)• Limit light intensity• Use well-directed, downward light
Avoiding and minimizing light remains very important
white
red
green
*( )
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Roy van Grunsven
Maurice Donners
Elmar Veenendaal
Marcel E. Visser
Frank Berendse
www.lichtopnatuur.org