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    <http://schema.org/datePublished> "2022-01-31 05:28:09.988036+00:00" ;
    <http://schema.org/description> "Water quality has improved quite a lot in the second half of the last century and dragonflies, as aquatic insects, have recovered in this period. However recently we have seen that numbers have started declining again and this seems to be mostly the case with the common species outside of nature reserves. We know this because there are hundreds of volunteers counting dragonflies every two weeks on fixed transects. By comparing the number of dragonflies that are counted we can see how different species are doing in different locations. Even some of the least critical species seem to be disappearing from certain parts of the Netherlands. Why this is happening is unknown. For other groups of aquatic insects we do not have detailed information but they seem to be following a similar pattern." ;
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    <http://schema.org/license> <https://choosealicense.com/no-permission/> ;
    <http://schema.org/name> "CITIZEN SCIENTISTS, DRAGONFLIES AND PESTICIDES" ;
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    <http://w3id.org/ro/earth-science#Sentence> "By comparing the number of dragonflies that are counted we can see how different species are doing in different locations." , "Water quality has improved quite a lot in the second half of the last century and dragonflies, as aquatic insects, have recovered in this period." , "We know this because there are hundreds of volunteers counting dragonflies every two weeks on fixed transects." ;
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    <http://schema.org/description> "This file contains data on measurements of insecticides and dragonfly counts." ;
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    <http://schema.org/description> "This document describes how transects from the Dutch Dragonfly Monitoring Scheme are to be selected for sampling and how water samples should be collected and stored" ;
    <http://schema.org/license> <https://choosealicense.com/no-permission/> ;
    <http://schema.org/name> "Making a tutorial for water sampling" ;
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    <http://schema.org/description> "Description of the comparison of dragonfly abundance, based on citizen science counts, and insecticides detected in the water at these transects, sampled by the citizen scientists. The dragonfly monitoring is part of the Dutch Dragonfly Monitoring Scheme, coordinated by Dutch Butterfly Conservation. This publication includes a description of the development and testing of a method to analyze insecticides in surface waters by the Leiden Centre for Applied Bioscience." ;
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