Luka Valencic

Potential green bacteria. Sample obtained at 6:50 pm on 4/8/19 at BBB Lily Pad Pond by sticking falcon tube into pond. The green organisms are most likely of domain bacteria as there do not appear to be any organelles inside of it. It cannot be archea as the Lily pond is not an extreme environment in which they are found. #caltechbi1

<figure class="wp-block-image">
 <img alt="IMG_20190408_194229967" class="wp-image-140986 gcloudimg" data-attachment-id="140986" data-comments-opened="1" data-image-meta='{"aperture":"1.7","credit":"","camera":"Moto G (5) Plus","caption":"","created_timestamp":"1554752549","copyright":"","focal_length":"4.28","iso":"125","shutter_speed":"0.033333333333333","title":"","orientation":"0"}' data-image-title="IMG_20190408_194229967" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_140972/IMG_20190408_194229967.jpg"/>
</figure>

Green bacteria in pond water

<figure class="wp-block-image">
 <img alt="Pollen_Microscope" class="wp-image-145995 gcloudimg" data-attachment-id="145995" data-comments-opened="1" data-image-meta='{"aperture":"1.7","credit":"","camera":"Moto G (5) Plus","caption":"","created_timestamp":"1556568727","copyright":"","focal_length":"4.28","iso":"1600","shutter_speed":"0.066666666666667","title":"","orientation":"0"}' data-image-title="Pollen_Microscope" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_145994/Pollen_Microscope.jpg"/>
 <figcaption>
 Pollen sample with structure similar to dandelion seeds (fluffy attachments so can drift on wind).
 </figcaption>
</figure>
<figure class="wp-block-image">
 <img alt="Pollen_Flower_Picture" class="wp-image-145996 gcloudimg" data-attachment-id="145996" data-comments-opened="1" data-image-meta='{"aperture":"1.7","credit":"","camera":"Moto G (5) Plus","caption":"","created_timestamp":"1556568423","copyright":"","focal_length":"4.28","iso":"2500","shutter_speed":"0.066666666666667","title":"","orientation":"0"}' data-image-title="Pollen_Flower_Picture" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_145994/Pollen_Flower_Picture.jpg"/>
 <figcaption>
 Location by Southwest corner of Page House on Caltech Campus were pollen sample was obtained at 8 PM on 4/29/2019 by brushing anthers and collecting pollen that fell off.
 </figcaption>
</figure>

 According to foldscope.com FAQ’s, the magnification of the foldscope is 140x. The vertical and horizontal dimensions of the main part of the pollen in the original photograph are 5mm and 2mm. Thus the actual dimensions of the pollen are 26 um by 14 um.


 The pollen sample appears to have structures similar to dandelion seeds (fluffy attachments so can drift on wind). How much do these structures increase the distance pollen grains are able to travel?


 One possible way to calculate the change in distance distance the pollen grains can travel is to create a computer simulation with a pollen with and without the structures and simulate the difference in distances the pollen travels based on wind speed.


 #caltechbi1

Luka Valencic

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Green bacteria in pond water

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