5a552e3a-05d3-55fe-20dd-4cb29a1dd323 eng utf8 dataset pointOfContact NIWA National Institute of Water and Atmospheric Research +64 4 386 0300 voice +64 4 386 0574 facsimile 301 Evans Bay Parade Hataitai Wellington 6021 New Zealand curator@niwa.co.nz http://www.niwa.co.nz Website of the National Institute of Water and Atmospheric Research, New Zealand - experts in environmental science Data curator 2015-02-13T11:13:16 creation ISO 19115-3 urn:ogc:def:crs:EPSG::4326 OGP NZST/NZDT Benthic-Optimised Marine Environment Classification (BOMEC) for New Zealand waters 2012-02-01T21:21:00 publication 2012-02-01T21:21:00 publication Distributional data for eight taxonomic groups (asteroids, bryozoans, benthic foraminiferans, octocorals, polychaetes, matrix-forming scleractinian corals, sponges, and benthic fish) have been used to train an environmental classification for those parts of New Zealand's 200 n. mile Exclusive Economic Zone (EEZ) with depths of 3000 m or less. A variety of environmental variables were used as input to this process, including estimates of depth, temperature, salinity, sea surface temperature gradient, surface water productivity, suspended sediments, tidal currents, and seafloor sediments and slope. These variables were transformed using results averaged across eight Generalised Dissimilarity Modelling analyses that indicate relationships between species turnover and environment for each species group. The matrix of transformed variables was then classified using k-medoids clustering to identify an initial set of 300 groups, with relationships between these groups then described using agglomerative hierarchical clustering. Groups at a fifteen group level of classification appropriate for use at a whole-of-EEZ scale are described; the classification can also be used at other levels of detail, for example when higher levels of classification detail are required to discriminate variation within study areas of more limited extent. Although not formally tested in this analysis, we expect the analytical process used here to increase the biological discrimination of the environmental classification. That is, the resulting environmental groups are more likely to have similar biological characteristics than when the input environmental variables are selected, weighted, and perhaps transformed using qualitative methods. The input environmental data were on a 1 km x1 km grid and the 15-group classification output exists as an ESRI shapefile. To generate a marine environment classification with relevance to the benthic environment within New Zealand waters Project was completed by NIWA for the then Ministry of Fisheries (now Ministry for Primary Industries - MPI). completed pointOfContact NIWA National Institute of Water and Atmospheric Research Ltd Wellington New Zealand suze.baird@niwa.co.nz Suze Baird Fisheries scientist author NIWA National Institute of Water and Atmospheric Research Ltd Wellington New Zealand ashley.rowden@niwa.co.nz Ashley Rowden Prinicpal Scientist vector environment New Zealand EEZ in depths of < 3000 m. 160.6,-25.89 188.8,-25.89 188.8,-55.95 160.6,-55.95 160.6,-25.89 160.6 190 -55.95 -25.89 2008-07-01T00:00:00 2009-06-30T00:00:00 https://dc.niwa.co.nz:/niwa_dc/srv/api/records/5a552e3a-05d3-55fe-20dd-4cb29a1dd323/attachments/BOMEC_s.png thumbnail png marine environment classification BOMEC BEN200601 theme NIWA Project Codes 2012-01-01 publication NIWA_ProjectCode See the link to the published report for a description of the input data and analysis. Contact the Research Data Manager at Ministry for Primary Industries (MPI) for permission and access. RDM@mpi.govt.nz Use of data and final output requires permission of Research Data Manager at MPI. RDM@mpi.govt.nz confidential Leathwick, J.R.; Rowden, A.; Nodder, S.; Gorman, R. ; Bardsley, S.; Pinkerton, M.; Baird, S.J.; Hadfield, M.; Currie, K.; Goh, A. (2012). A Benthic-optimised Marine Environment Classification (BOMEC) for New Zealand waters. New Zealand Aquatic Environment and Biodiversity Report No. 88. 54 p. largerWorkCitation eng https://dc.niwa.co.nz/niwa_dc/srv/metadata/5a552e3a-05d3-55fe-20dd-4cb29a1dd323 WWW:LINK-1.0-http--metadata-URL Point of truth URL of this metadata record http://fs.fish.govt.nz/Doc/23073/AEBR_88.pdf.ashx WWW:LINK-1.0-http--link BOMEC report Publication describing objective, input data, analyses, and results. See the link to the published report for a description of the input data and analysis. dataset BOMEC shapefile unclassified