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River Stinchar - United Kingdom |
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River Tweed - United Kingdom |
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River Wye - United Kingdom |
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Rodnei Calimani - Romania |
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Rofental - Austria |
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Roggeveld post-fire plots - South Africa |
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Rothamsted - United Kingdom |
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Ruette - Belgium |
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Samaria National Park - Greece |
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Schaenis - Switzerland |