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Counting Terns on Griend with an UAV

Usually nests of Sandwich Terns are counted by observers who walk through the colony and take inventory of the number of nests and eggs. This...
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Rigid raider craft

The boat is equipped with a large flat working deck with a grip coating. There is sufficient mounting options for frames and / or sensors...
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Aerial survey of Zostera Marina

In the Dutch Wadden Sea, efforts are being made to restore intertidal Zostera marina populations. In order to monitor the results of several restoration trials, individual...
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BUILDING MARRAM-GRASS MIMMICKS

For a project of Radboud Nijmegen University we have constructed and build life-size mimicks of marramgrass plots on the beach of the island of Schiermonnikoog....
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READOUT-SURVEY GROUNDWATERLEVEL LAUWERSMEER

Every year we assist in a 1-day survey to ease the process of reading out divers that are placed to monitor groundwaterlevels in the Lauwersmeer...
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Counting geese

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SOWING SEAGRASS SEEDS IN THE GREVELINGEN

With the construction of the Brouwersdam in 1971, the connection between the Grevelingen and the North Sea was closed. As a result the lake slowly...
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DEVELOPING AND BUILDING A TOWCAM

For a PhD project at the University of Groningen aimed at studying the macrofauna community of the seafloor we developed and built a so-called towcam....
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CREATING MUSSELBEDS ON THE REMOTE ISLAND GRIEND

In our line of work you sometimes have to ask strange questions: such as: ‘do you happen to have 42 kilometers of coconut rope laying...
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Mapping Griend

Every few months we conduct an aerial survey to construct a orthomosaic map of the entire island of Griend (about 100 hectares). Orthomosaics provide valuable insights...