<commit_before>---
layout: page
title: Research Projects
submenu:
  - { hook: "albatross", title: "Seabirds" }
  - { hook: "deBInfer", title: "Bayesian Inference" }
  - { hook: "seamounts", title: "Seamounts & Islands" }
  - { hook: "SLs", title: "Open ocean" }
---

## Seabird Ecology<a name="albatross">&nbsp;</a>

### Bioenergetics and foraging movements of Antarctic albatrosses
<table style="width:80%"><tr><td>
<img class="img-research" src="http://leah.johnson-gramacy.com/albatross/wp-content/gallery/at-sea/JC66-800px-wm-2573.jpg"> Albatrosses are the largest seabirds and top-predators of the open ocean, but their numbers are declining and many species are now endangered. I am using a combination of mathematical and statistical models and several decades of observational data to understand the factors affecting the population dynamics of these birds by studying their bioenergetics and foraging strategies. 
</td></tr></table>

#### Related Links
Find out more about this project on the <a href="http://leah.johnson-gramacy.com/albatross">Albatross Project website</a>.<br>
<a href="https://figshare.com/articles/Unravelling_physiological_and_ecological_determinants_of_albatross_chick_growth/1591048">Slides from my WSC2015 talk on metabolic models for albatrosses</a> 

### Chick-provisioning in macaroni penguins<a name="weighbridge">&nbsp;</a>
<table style="width:80%"><tr><td>
<img class="img-research" src="/public/images/jumping_out_crop.gif"> With a global population of over 11 million individuals macaroni penguins are not only the most numerous penguins, but also the largest consumers of prey among all seabirds. I am using an automatic weighbridge to study body weights and foraging movements of marked and unmarked penguins at a study colony on Bird Island, South Georgia to better understand how macaronis forage during the breeding season and how they balance provisioning their chicks with the need to maintain their own body condition.

This work relies on a data base of several hundred thousand body mass time series. This poses computational challenges for data processing and analysis. I have addressed part of this challenge by creating an [R wrapper](http://doi.org/10.21105/joss.00100) for some very fast time series similarity search algorithms.

**Paper:** Boersch-Supan (2016): [rucrdtw: Fast time series subsequence search in R](http://doi.org/10.21105/joss.00100)<br>
**Software:** [rucrdtw: R Bindings for the UCR Suite](https://cran.r-project.org/package=rucrdtw)
</td></tr></table>

<commit_msg>shifted content out of table<commit_after>---
layout: page
title: Research Projects
submenu:
  - { hook: "albatross", title: "Seabirds" }
  - { hook: "deBInfer", title: "Bayesian Inference" }
  - { hook: "seamounts", title: "Seamounts & Islands" }
  - { hook: "SLs", title: "Open ocean" }
---

## Seabird Ecology<a name="albatross">&nbsp;</a>

### Bioenergetics and foraging movements of Antarctic albatrosses
<table style="width:80%"><tr><td>
<img class="img-research" src="http://leah.johnson-gramacy.com/albatross/wp-content/gallery/at-sea/JC66-800px-wm-2573.jpg"> Albatrosses are the largest seabirds and top-predators of the open ocean, but their numbers are declining and many species are now endangered. I am using a combination of mathematical and statistical models and several decades of observational data to understand the factors affecting the population dynamics of these birds by studying their bioenergetics and foraging strategies. 
</td></tr></table>

#### Related Links
Find out more about this project on the <a href="http://leah.johnson-gramacy.com/albatross">Albatross Project website</a>.<br>
<a href="https://figshare.com/articles/Unravelling_physiological_and_ecological_determinants_of_albatross_chick_growth/1591048">Slides from my WSC2015 talk on metabolic models for albatrosses</a> 

### Chick-provisioning in macaroni penguins<a name="weighbridge">&nbsp;</a>
<table style="width:80%"><tr><td>
<img class="img-research" src="/public/images/jumping_out_crop.gif"> With a global population of over 11 million individuals macaroni penguins are not only the most numerous penguins, but also the largest consumers of prey among all seabirds. I am using an automatic weighbridge to study body weights and foraging movements of marked and unmarked penguins at a study colony on Bird Island, South Georgia to better understand how macaronis forage during the breeding season and how they balance provisioning their chicks with the need to maintain their own body condition.
</td></tr></table>

This work relies on a data base of several hundred thousand body mass time series. This poses computational challenges for data processing and analysis. I have addressed part of this challenge by creating an [R wrapper](http://doi.org/10.21105/joss.00100) for some very fast time series similarity search algorithms.

**Paper:** Boersch-Supan (2016): [rucrdtw: Fast time series subsequence search in R](http://doi.org/10.21105/joss.00100)<br>
**Software:** [rucrdtw: R Bindings for the UCR Suite](https://cran.r-project.org/package=rucrdtw)


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