Jessica Roth

MS candidate at Northeastern University committed to studying marine biology and #oceanconservation @NU_ThreeSeas 🦈 #CornellUniversity

[Jessica Roth @Jessica_Roth88]

@Shotgun_kelp @DanvonScience Happy bday Danielllllll

[Jessica Roth @Jessica_Roth88]

The stream of dye that flows closest to the top hole is strait because sponges have a #diffusive boundary layer keeping flow steady. It isn't until their filtered water reaches the edge of their #DBL where the turbulence takes over.

[Jessica Roth @Jessica_Roth88]

One of the most exciting ways to study fluid dynamics on reefs is by watching the pumping power of sponges by squirting a little green dye at their base. They suck it in and spew it out their #osculums, filtering the water as they go, until turbulent eddies spiral the water away.

[Jessica Roth @Jessica_Roth88]

#WhatJessDoin you might ask? Learning about #RandomWalks of particals in a fluid. Single partical moment is unpredictable BUT the probability of position after dispersion of a group of particals can be predicted! Often net movement is NO MOVEMENT @NU_ThreeSeas

[Jessica Roth @Jessica_Roth88]

Who knew there was so much math involved in pipe-shaped anaimal metabolism....Giving me a head ache but these organisms couldn’t function without the physics! #important #WhatJessDoin @NU_ThreeSeas

[Jessica Roth @Jessica_Roth88]

A couple more rounds of plankton counts but this time the class is looking at samples from the upright nets. My group counted samples over coral... we found a total of 2 copopods and one ostracod over 4 samples...#WhatJessDoin

[Jessica Roth @Jessica_Roth88]

Hey follow #WhatJessDoin to see a live tweet of what Im doing in our Reef Zooplankton lab today! My dream team included @SmlThgsSci @iris_seto @kelldooling @StrangeIcedTea #3Cs37

[Jessica Roth @Jessica_Roth88]

Currently in the middle of lecture but soon we will be compiling all of the dive teams zooplankton data and have a graph making party... stay tuned #WhatJessDoin

[Jessica Roth @Jessica_Roth88]

The shape of this mounding coral creates roughness and has three boundary layers controlling the bio-processes and H2O movement into and around the colony. The upper benthic boundary layer (BL), the middle momentum BL and the diffusive BL at the polyp level #3Cs37 @NU_ThreeSeas

[Jessica Roth @Jessica_Roth88]

@kelldooling Oh man. Our results looked pretty different and we were in a sand channel at the base of the reef, what part of the reef were you in?

[Jessica Roth @Jessica_Roth88]

@theChachonator @NUMarSci I too think soft coral wave movement is mesmerizing 🌀which boundary layer do u think is effecting their movement?

[Jessica Roth @Jessica_Roth88]

The unsuspecting green cloud is actually a puff of organic fluorescein dye used for understanding how turbulent diffusion behaves at different distances from the sandy bottom. The faster it spreads the more turbulence there is! #3Cs37

[Jessica Roth @Jessica_Roth88]

New physical perspective on #coralprocesses! Today's sedimentation lab showed the speed with which corals can remove sand from their surface using #polyp behavior, #BoundaryLayer #currents and #mucous production. Extra sand was cleared after experiments 🤗 @NU_ThreeSeas #3Cs37

[Aust Coral Reef Soc @AustCoralReefs]

How can #Coral dwelling #fish moderate bleaching susceptibility of coral hosts? Coral Colonies with #damselfish = higher #Symbiodinium densities & #chlorophyll @plosone @coralcoe @CuttotheChase6 @MorganPratchett @GraceEFrank https://t.co/8ai7gxL0Ga

[Jessica Roth @Jessica_Roth88]

@NU_ThreeSeas

[Jessica Roth @Jessica_Roth88]

Fact: marine biology students are part fish. We even take our exams underwater! Our Caribbean corals ID exam was written on dive slates at -25ft. Fun fact: Scolymia cubensis and Scolymia lacera are very difficult to tell apart #20CoralSpecies #Panama #3Cs37 @MaggieDJohnson

[Jessica Roth @Jessica_Roth88]

@NU_ThreeSeas

[Jessica Roth @Jessica_Roth88]

Here’s something cool! Mangrove rhizomes (hanging root-like structures) are in a mutual relationship with brightly colored sponges. These salty trees actually grow faster with their spongy occupants #mangrove #interactions #3Cs37 @MaggieDJohnson