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id="docs-internal-guid-508de9a5-7fff-7feb-490b-565dd1108976">
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style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Biology Department Virtual Seminar</span></p>
<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Thursday, April 29 at Noon</span></p>
<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Zoom link: </span><a
href="https://whoi-edu.zoom.us/j/98338871942"
style="text-decoration:none;"><span style="font-size:11pt;font-family:Arial;color:#1155cc;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">https://whoi-edu.zoom.us/j/98338871942</span></a></p>
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<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">MIT-WHOI Joint Program students </span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">
</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Seth Cones: “</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Swimming behaviors during vertical migration in veined squid (</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:italic;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Loligo</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;"> </span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:italic;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">forbesii</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">)”</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">
</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Alexandra Jones: “</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Exploring the Biological Response to Eddy Trapping in the North Pacific Subtropical Gyre</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">”</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">
</span></p>
<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Seth Cones</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;"><u>:</u> </span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Swimming behaviors during vertical migration in veined squid (</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:italic;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Loligo forbesii</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">)</span></p>
<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Abstract: Many squid taxa undergo daily vertical migrations from deeper daytime depths to shallower waters at night. Locomotory strategies that animals use to complete these vertical migrations define the metabolic costs of migrations and influence the risk of detection and capture by predators. Yet, there is little understanding of the fine-scale movements squid employ during these migrations. In 2019, we affixed 5 veined squid (</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:italic;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Loligo forbesii</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">) with custom-built biologging tags (ITags) containing high-resolution inertial measurement units coupled with depth and temperature sensors for ca. 24 hours. Here, we present the first high-resolution (> 1 Hz) movement data set for any free-ranging squid. This work uses these novel data to broadly define squid habitat use and its diel variability, and at a finer-scale, to quantify gait and swim direction during ascent and descent swimming. Each animal underwent normal diel vertical migrations roughly aligned with sunset and sunrise. Ascent periods varied in swimming strategy and vertical speed; two squid exhibited cyclic climb-and-glide ascents, while the remaining three individuals swam vertically at a lower vertical speed with no repetitive depth modulation patterns. While all squid swam in both the arms-first and mantle-first direction, mantle-first swimming was preferred during ascents, which underscores its importance during frequent upward migrations that are more energetically expensive than horizontal swimming. Our results indicate that </span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:italic;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">L. forbesii</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;"> vertical migrations are variable in aspects such as animal posture, swim direction, and swimming strategy. Taken together, such data provide new insights about energy conservation and predator-prey dynamics of marine predators in their natural environment.
</span></p>
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<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Alexandra Jones</span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">: </span><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:700;font-style:normal;font-variant:normal;text-decoration:underline;-webkit-text-decoration-skip:none;text-decoration-skip-ink:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Exploring the Biological Response to Eddy Trapping in the North Pacific Subtropical Gyre</span></p>
<p dir="ltr"
style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Abstract: Mesoscale eddies are universal spinning masses of water that are analogous to atmospheric weather systems and account for most of the kinetic energy in the ocean. Eddies drive biophysical interactions with phytoplankton populations by inducing vertical and horizontal mixing, altering nutrient concentrations, and transporting ecosystems. Despite the ubiquity of ocean eddies and the abundance of studies dedicated to understanding their dynamics, much is unknown with respect to the biological response to eddy trapping. Computational fluid dynamics tools have been recently developed to identify rotationally coherent Lagrangian vortices, a distinct set of eddies characterized by their ability to trap fluid over significant periods of time. Notably, the phytoplankton community structure inside rotationally coherent Lagrangian vortices remains unexplored. This study uses a combined Lagrangian and Eulerian framework to identify eddies with a range of trapping strengths in the North Pacific subtropical gyre using satellite observations and a high-resolution MITgcm-Darwin Model simulation. By examining changes in chlorophyll and phytoplankton community structure, our preliminary results suggest that coherent eddies stimulate a unique biological response compared to leaky eddies. This motivates future analysis to better understand how eddy trapping affects phytoplankton populations and the potential impacts for biogeochemical cycling.</span></p>
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style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">Meeting ID: 983 3887 1942</span></p>
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<pre class="moz-signature" cols="72">--
Margot McKlveen | she/her
Senior Administrative Assistant
Woods Hole Oceanographic Institution
Redfield Building Room 305 | MS 32
266 Woods Hole Rd.
Woods Hole, MA 02543
508-289-2334
<a class="moz-txt-link-abbreviated" href="mailto:mmcklveen@whoi.edu">mmcklveen@whoi.edu</a></pre>
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