Butterfly Monitoring From a Volunteerc2b4s Perspective Sergiu Mocan
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Transcript of Butterfly Monitoring From a Volunteerc2b4s Perspective Sergiu Mocan
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BUTTERFLY MONITORING
FROM A VOLUNTEER´S
PERSPECTIVE
Transecting while having fun with friends
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CONTENT
1. Introduction
2. Transects
3. Collected data
4. Example
5. Useful links
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1. INTRODUCTION
Monitoring butterflies helps assess population-trends.
This allows the tracking of population-scale fluctuations
on a local, regional or national level.
These trends can be then used as indicators of
biodiversity and local environmental changes.
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Butterflies are
particularly
vulnerable to habitat
fragmentation.
1. INTRODUCTION
http://vnrc.org/wp-content/uploads/typo3/clip_image001.jpg
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Many species are sensitive to
climate change, which is why
they were used and still are used
in models forecasting the
impact of climate change on
local fauna.
1. INTRODUCTION
http://earthtechling.com/wp-content/uploads/2014/08/climate-change_SS_142619857_0819132-617x416.jpg
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1. INTRODUCTION
Monitoring is based on a standard method that
can be used in the field, called Transect.
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Changes in the number of
butterflies can be easily
identified by regular
counting, on fixed routes,
known as transects.
2. TRANSECT
http://butterflies.biodiversityireland.ie/wordpress/wp-content/uploads/Transect-map-resized.png
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2. TRANSECT
Transects should be chosen in an easily accessible area, close
to the volunteers residence, and are divided into parcels of
50 or 100 meters long and 5 meters wide. It is recommended
to meet the minimum number of 5 plots.
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2. TRANSECT
Ideally counts should be done weekly.
Transects for individual species should be done only in
the period of activity of the target-species.
Transects can be done for counting all species or an
individual species and even for larvae and eggs.
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2. TRANSECT
Conditions for walking a valid transect.
• Between 10:00h and 17:00h
• Temperature must exceed 13° C
• Degree of cloudiness should be less than 60%
• Wind speed less than 5 on the Beaufort scale
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3. COLLECTED DATA
It is important that the counts made
become accessible for trend calculations
and analysis.
Combining data from several transects
improves data quality on a regional or
national level.
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3. COLLECTED DATA
Data can be entered into the database on the website
"Butterfly Monitoring Recording webpage" via
www.bc-europe.eu
Data will be used for indicators at an European level
such ass "European Grassland Butterfly Indicator" and
"European Butterfly Climate Change Indicator"
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4. EXAMPLE
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5. USEFUL LINKS
http://bc-europe.eu/
http://fluturomania.wordpress.com/
http://www.lepidoptera.ro/
http://lepidoptera.eu/
http://lepiforum.de/