Table 1 Number of Natura 2000 sites established for the direct protection of subterranean habitats across the European Union.

From: Perspectives and pitfalls in preserving subterranean biodiversity through protected areas

Code

Designation

N of sites

%

H8310

Caves not open to the public

1999

7.40

H8320

Fields of lava and natural excavations

79

0.29

H8330

Submerged or partially submerged sea caves

434

1.61

Total *

2407

8.90

 
  1. *Some Natura 2000 sites have been designed to cover multiple subterranean habitats, so the total number of sites (and associated percentage) is not the sum of the column “N of sites”.
  2. Numbers in the percentage column (%) are calculated out of 27,027 total Natura 2000 sites.
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