Monitoring Of Rocky-Bottom Macrobenthic Communities On Locations At Svalbard And Jan Mayen Using Digital Image Analysis ...
No abstracts are to be cited without prior reference to the author.Temporal and spatial variations of epibenthic hard-bottom communities on high-arctic Svalbard and subarctic Jan Mayen are investigated by digital image analyses. The underwater photographs are taken using a metal frame (50 x 50 cm) a...
| Main Authors: | , |
|---|---|
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
ASC 2003 - J - Theme session
2024
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.17895/ices.pub.25348483 https://ices-library.figshare.com/articles/conference_contribution/Monitoring_Of_Rocky-Bottom_Macrobenthic_Communities_On_Locations_At_Svalbard_And_Jan_Mayen_Using_Digital_Image_Analysis/25348483 |
| Summary: | No abstracts are to be cited without prior reference to the author.Temporal and spatial variations of epibenthic hard-bottom communities on high-arctic Svalbard and subarctic Jan Mayen are investigated by digital image analyses. The underwater photographs are taken using a metal frame (50 x 50 cm) and a Hasselblad SWC in an underwater housing. The technique is based on stereo- photographs developed by Thomas Lundälv. Digital image analysis was carried out using Adobe Photoshop and the plug-in Fovea Pro for measurements. An efficient method using the RGB- model of Photoshop was developed to retrieve community data of macrobenthic solitary and colonial organisms. The method is “non destructive” and therefore suitable for repetitively sampling. A long-term study (1977- today) of temporal variations and succession in Kongsfjord/Svalbard showed a correlation between increase of brown-algae and the sea urchin Strongylocentrotus sp. and the decline of the actinia Urticina sp. ... |
|---|