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SAMBR - Inter-annual change MDS

Ice algal community similarity of central Russian Arctic drifting stations from the 1980s to 2010s based on unpublished data by I.A. Melnikov, Shirshov Institute of Oceanology.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."

Simple

Date (Publication)
2017-05
Edition
http://localhost:8080/demodem/editioin
Status
Completed
Author
  - Mikko Vihtakari
Resource provider
  - Igor Melnikov
Point of contact
  Conservation of Arctic Flora and Fauna (CAFF) - Tom Barry ( Executive Secretary )
Borgir, Nordurslod , Akureyri , 600 , Iceland
+354 4623350
http://caff.is
Hours of service
08:00 - 16:00 GMT
Maintenance and update frequency
Unknown
Theme
  • CHAPTER3
  • Ice algae
  • composition
  • inter-annual
  • change
  • Marine
Place
  • Seaicebiota
Access constraints
Copyright
Use constraints
otherRestictions
Spatial representation type
Vector
Metadata language
English
Character set
UTF8
Topic category
  • Oceans
Begin date
1980-03-24
End date
2013-05-05
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Reference system identifier
WGS 1984
Protocol
WWW:LINK-1.0-http--link
Protocol
OGC:WMS-1.1.1-http-get-map
OnLine resource
fig_3_1_8.png ( WWW:DOWNLOAD-1.0-http--download )

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Date (Publication)
File identifier
1a73cb42-1b3a-400a-9b98-5510e2f7f8cd XML
Metadata language
English
Character set
UTF8
Date stamp
2023-02-13T13:59:31
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
  - ( )
Publisher
  Conservation of Arctic Flora and Fauna (CAFF) - Hólmgrímur Helgason ( Data Manager )
Borgir, Nordurslod , Akureyri , 603 , Iceland
+354 462 3357
 
 

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Keywords

CHAPTER3 Ice algae Marine change composition inter-annual

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