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Updated QOD May 2022 (markdown)

Amy B 2022-05-17 14:23:54 +02:00
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QOD-May-2022.md

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**Description:** **Description:**
A QGIS user needs community advice! Penny Clarke, a PhD student at the British Antarctic Survey, is studying whale mass strandings from space, using satellite imagery. A QGIS user needs community advice! Penny Clarke, a PhD student at the British Antarctic Survey, is studying whale mass strandings from space, using satellite imagery.
Most efforts to analyze satellite imagery for wildlife have used ArcGIS and in an effort to make this an accessible tool, I hope to move towards using QGIS. The current challenge to using QGIS is the need to PanSharpen satellite imagery before analysis. In ArcGIS, there are the option to pansharpen using Brovey, ESRI, Gram Schmidt etc. As I understand there is a plugin, Orfeo Toolboox, for QGIS. I hoped to discuss with the QGIS community this plugin and understand the comparability to those available in ArcGIS, and to discuss if the community can recommend options/solutions to making this transition possible. Most efforts to analyze satellite imagery for wildlife have used ArcGIS and in an effort to make this an accessible tool, I hope to move towards using QGIS. The current challenge to using QGIS is the need to PanSharpen satellite imagery before analysis. In ArcGIS, there are the option to pansharpen using Brovey, ESRI, Gram Schmidt etc. As I understand there is a plugin, Orfeo Toolboox, for QGIS. I hoped to discuss with the QGIS community this plugin and understand the comparability to those available in ArcGIS, and to discuss if the community can recommend options/solutions to making this transition possible.
Monitoring whales and particularly understanding the threats to whales is critical, as they are influential to the structuring of marine ecosystems. Whales highly mobile and inaccessible lifestyle present considerable challenges for monitoring and conservation; however, as sentinel species, whale strandings can act as early warning systems. Rising multifaceted anthropogenic and environmental threats across the globe are likely to coincide with an increase in reported strandings, but monitoring is biased towards populated coastlines. Very High Resolution (VHR) satellite imagery offers the prospect of upscaling monitoring of mass strandings in unpopulated and inaccessible areas, over broader spatial and temporal scales not possible with traditional monitoring methods, and can be used to retrospectively analyse historical stranding events. VHR satellite imagery is an emerging, complementary tool to monitor mass strandings; however, for this to be a viable tool for the long-term monitoring of mass strandings, significant technical, practical, and environmental considerations and challenges must be addressed.
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