1a73cb42-1b3a-400a-9b98-5510e2f7f8cd Hólmgrímur Helgason Conservation of Arctic Flora and Fauna (CAFF) Data Manager +354 462 3357 Borgir, Nordurslod Akureyri 603 Iceland hoddi@caff.is 2023-02-13T13:59:31 ISO 19115:2003/19139 1.0 WGS 1984 SAMBR - Inter-annual change MDS 2017-05 http://localhost:8080/demodem/editioin Ice algal community similarity of central Russian Arctic drifting stations from the 1980s to 2010s based on unpublished data by I.A. Melnikov, Shirshov Institute of Oceanology. The closer two samples (symbols) are to each other in this multi-dimensional scaling plot, the more similar their algal communities were, based on presence/absence of algal species. Samples from the same year tend to be similar and group together on the plot, with some exceptions. Dispersion across the plot suggests that community structure has changed over the decades, although sampling locations in the central Arctic have also shifted, thus introducing bias. An analysis of similarity (PRIMER version 6) with a high Global R=0.80 indicates strong community difference among decades (global R=0 indicates no difference, R=1 indicates complete dissimilarity). Regional differences were low (global R=0.26) and difference by ice type moderate (global R=0.38). Grey arrows point to the very different and only two samples from 2013. STATE OF THE ARCTIC MARINE BIODIVERSITY REPORT - <a href="https://arcticbiodiversity.is/findings/sea-ice-biota" target="_blank">Chapter 3</a> - Page 47 - Figure 3.1.8 "For the analysis of possible interannual trends in the ice algal community, we used a data set from the Central Arctic, the area most consistently and frequently sampled (Melnikov 2002, I. Melnikov, Shirshov Institute, unpubl. data). Multivariate community structure was analysed based on a presence-absence matrix of cores from 1980 to 2013. The analysis is biased by the varying numbers of analysed cores taken per year ranging widely from 1 to 24, ice thickness between 0.6 and 4.2 m, and including both first-year as well as multiyear sea ice. Locations included were in a bounding box within 74.9 to 90.0 °N and 179.9°W to 176.6°E and varied among years." Mikko Vihtakari mikko.vihtakari@gmail.com Igor Melnikov migor39@yandex.ru Tom Barry Conservation of Arctic Flora and Fauna (CAFF) Executive Secretary +354 4623350 Borgir, Nordurslod Akureyri 600 Iceland abds@caff.is http://caff.is WWW:LINK-1.0-http--link 08:00 - 16:00 GMT https://geo.abds.is/geonetwork/srv/api/records/1a73cb42-1b3a-400a-9b98-5510e2f7f8cd/attachments/fig_3_1_8.png large_thumbnail png CHAPTER3 Ice algae composition inter-annual change Marine Seaicebiota oceans 1980-03-24 2013-05-05 -180 180 50 89 You can customize the template to suit your needs. You can add and remove fields and fill out default information (e.g. contact details). Fields you can not change in the default view may be accessible in the more comprehensive (and more complex) advanced view. You can even use the XML editor to create custom structures, but they have to be validated by the system, so know what you do :-) WWW:LINK-1.0-http--link OGC:WMS-1.1.1-http-get-map https://geo.abds.is/geonetwork/srv/api/records/1a73cb42-1b3a-400a-9b98-5510e2f7f8cd/attachments/fig_3_1_8.png WWW:DOWNLOAD-1.0-http--download fig_3_1_8.png Image