comparing the abundances of birds on the river and the forest edge
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Mohelno 2013
Martin Hůlka, Eva Švamberková,Veronika Schaabová, Ludmila Vlková,Veronika Otisková, Alexandra Průchová
Comparing the abundances of birds on the river and the forest edge
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Methods
8 nets› 4 on the river edge› 4 on the forest edge
2 days (3 hours) + 1 day (6 hours) Check every 30 minutes Birds: trap → determine → ring → write
down → release Comparison of two years (2013 and 2011)
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Map of nets
River edgeForest edge
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Results 2013 Total number of birds 28 (10 species)
› 17 birds on the river edge› 11 birds on the forest edge
60.71%39.29% River edge
Forest edge
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Number of species 2013
Great
Tit
Euro
pean
Rob
in
Blac
kcap
Eura
sian
Nutha
tch
Blue
Tit
Blac
kbird
Long
-toed
Tre
ecre
eper
Goldc
rest
Gray W
agta
il
Willow
Tit
0
1
2
3
4
5
6
River edge
Forest edge
Species
N
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Number of trapped birds
Great
Tit
Euro
pean
Rob
in
Blac
kcap
Eura
sian
Nutha
tch
Blue
Tit
Blac
kbird
Mar
sh T
it
Shor
t-toe
d Tr
eecr
eepe
r
Long
-toed
Tre
ecre
eper
Goldc
rest
Eura
sian
Wre
n
Willow
Tit
Gray W
agta
il0
0.002
0.004
0.006
0.008
Total 2011 Total 2013
How many birds were trapped during 1 hour on 1 m2 ?Number of birds is standardized (we considered length of nets and time of catching in hours)
Species
Trap
ped
– 1
hou
r/1m
2
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Habitat characteristics used
Canopy openness (% of foliage on photo of canopy)
Shrub density (% of shrub coverage in 5x5 m)
Grass coverage (% of grass on 1 x 1 m square on forest floor)
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CCA
2011
2013
E1 – grassE2 – shrubsE3 - canopy
River edgeForest edge
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Years 2011 and 2013 together
River edgeForest edge
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BirdsRobin
Long-toed Treecreeper
Goldcrest
European Nuthatch
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BirdsGreat tit Blue tit
Grey wagtail Blackcap
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Treecreeper
Long-toed
http://www.stephenmenzie.com/2012/04/brachydactyla.html
Short-toed
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Thank you for your attention