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Nacetin forest research plots - Czechia |
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National Park Berchtesgaden - Germany |
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National Park Hainich - Germany |
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Nationalpark Mols Bjerge - Denmark |
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Nationalpark Schwarzwald - Germany |
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Nationalpark Unteres Odertal - Germany |
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Oberes Stubachtal - Austria |
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Obergurgl - Austria |
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Osterseen - Germany |
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Oulanka Research Station (Oulanka LTER) - Finland |