ISO-19115 compatible metadata of our vent database

We thank the UNEP World Conservation Monitoring Centre (UNEP-WCMC) for preparing ISO-19115 compatible metadata for the InterRidge Vents Database. There are PDF and XML versions for these metadata below. The PDF file is a revised version of that provided in Annex 3 of: Martin, C.S., et al. (2014) Manual of marine and coastal datasets of biodiversity importance. May 2014 release. Cambridge (UK): UNEP World Conservation Monitoring Centre. 28 pp. (+ 4 annexes totalling 174 pp. and one e-supplement), ISBN: 978-92-807-3393-8,