Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. ...
-
Upload
clarissa-horton -
Category
Documents
-
view
221 -
download
0
Transcript of Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. ...
![Page 1: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/1.jpg)
Gitanjali Gnanadesikan
![Page 2: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/2.jpg)
Princeton University’s Ecology and Evolutionary Biology Department.
Working with Allison Shaw in Simon Levin’s theoretical ecology lab.
Original internship title: “What factors ultimately drive migration?”
![Page 3: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/3.jpg)
Often applied definition: long distance, round trip, seasonal movements between two “worlds”: breeding grounds and wintering grounds (as studied in birds).
Problems with this definition: What is “long” distance? What if the trip is made on a different
timescale: multiple times a year or once a lifetime?
What about distinct locations that are not wintering or breeding grounds?
![Page 4: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/4.jpg)
As described by Dingle (2007):Migration is movement that…1) Is persistent, undistracted, and directed.2) Is of greater scale and longer duration
than normal daily activities.3) Is a seasonal back-and-forth between
regions which are temporarily favorable.4) Results in geographic redistribution
within a widespread population.
Dingle, Hugh. What is Migration? Bioscience. Vol. 57, Iss. 2. Pp 113-121. Feb 2007.
![Page 5: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/5.jpg)
Most information about migration is species-specific.
Look at migration as phenomenon across taxa.
Focused on mammals to start.
Task: conduct extensive literature –based research to compile a database of migratory behaviors using new definition.
Synthesize collected to data and look for patterns.
![Page 6: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/6.jpg)
![Page 7: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/7.jpg)
A-to-B: Directed movement by a group of animals between two distinct locations.
Examples: Humpback whales, Arctic Terns, and many iconic migrations.
Dispersal-recongregation: movement away from some location and then returning to some common location. Involves individuals utilizing different resources and paths.
Examples: many bats (caves), pinnipeds (breeding territories).
![Page 8: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/8.jpg)
![Page 9: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/9.jpg)
![Page 10: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/10.jpg)
![Page 11: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/11.jpg)
Confirmation of major choice. Valuable research experience and
familiarity with the field and current research.
Basis of research to be continued this year: Continue researching species (about ¼ of
mammals done). Look at more geographic data for patterns
and relationships to climate, resources, etc.
![Page 12: Gitanjali Gnanadesikan. Princeton University’s Ecology and Evolutionary Biology Department. Working with Allison Shaw in Simon Levin’s theoretical.](https://reader035.fdocuments.us/reader035/viewer/2022062305/5697bf771a28abf838c815c9/html5/thumbnails/12.jpg)
To PEI, the EEB department, and especiallyAllison Shaw for a great summer internship experience. Also the AOS department for collaborations and journal club.