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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Calibri",sans-serif"><span style="font-size:11pt">Dear MARMAM community,<span></span></span></p>

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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Calibri",sans-serif"><span style="font-size:11pt">My co-authors and I would
like to announce the recent publication of the following paper: “</span><span style="font-size:11pt">A comparison of baleen whale density estimates
derived from overlapping satellite imagery and a shipborne survey”.<span></span></span></p>

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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Calibri",sans-serif"><span style="font-size:11pt">The paper is open access,
and available to all from: <a href="https://doi.org/10.1038/s41598-020-69887-y" style="color:rgb(5,99,193);text-decoration:underline">https://doi.org/10.1038/s41598-020-69887-y</a>.</span><span style="font-size:11pt"><span></span></span></p>

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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Calibri",sans-serif"><span style="font-size:11pt">Abstract:<span></span></span></p>

<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Calibri",sans-serif"><span style="font-size:11pt">As whales recover from
commercial exploitation, they are increasing in abundance in habitats that they
have been absent from for decades. However, studying the recovery and habitat
use patterns of whales, particularly in remote and inaccessible regions,
frequently poses logistical and economic challenges. Here we trial a new
approach for measuring whale density in a remote area, using Very-High-Resolution
WorldView-3 satellite imagery. This approach has capacity to provide sightings
data to complement and assist traditional sightings surveys. We compare at-sea
whale density estimates to estimates derived from satellite imagery collected
at a similar time, and use suction-cup archival logger data to make an
adjustment for surface availability. We demonstrate that satellite imagery can
provide useful data on whale occurrence and density. Densities, when unadjusted
for surface availability are shown to be considerably lower than those
estimated by the ship survey. However, adjusted for surface availability and
weather conditions (0.13 whales per km<sup>2</sup>, CV = 0.38), they fall
within an order of magnitude of those derived by traditional line-transect
estimates (0.33 whales per km<sup>2</sup>, CV = 0.09). Satellite surveys
represent an exciting development for high-resolution image-based cetacean
observation at sea, particularly in inaccessible regions, presenting
opportunities for ongoing and future research.<span></span></span></p>

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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Calibri",sans-serif"><span style="font-size:11pt">Regards,<span></span></span></p>

<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Calibri",sans-serif"><span style="font-size:11pt">Connor<span></span></span></p>

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<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Calibri",sans-serif"><span style="font-size:11pt;color:black" lang="EN-US">Connor
Bamford | PhD Researcher | British Antarctic Survey <span></span></span></p>

<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Calibri",sans-serif"><span style="font-size:11pt;color:black" lang="EN-US">High
Cross, Madingley Road, Cambridge CB3 0ET<span></span></span></p>





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