SEMINAR: MBF602 STUDENT SEMINAR *FRIDAY* 2/24 @ 12 NOON---ELIZABETH MARTIN-COUNCILL & DWIGHT EBANKS

[Pam Harris <pharris@rsmas.miami.edu>]

 ****PLEASE NOTE THERE IS NO MBF FACULTY SEMINAR SCHEDULED FOR THIS FRIDAY****

MBF Student Seminar Series

 

Elizabeth Martin-Councill

Advisor: Dr. David Die

“A comparative theoretical study of age-structured

fish subpopulations”

 

Dwight Ebanks

Advisor: Dr. Nelson Ehrhardt

“The influence of increased aquatic CO₂ on the respiration in early life stages of cobia, Rachycentron canadum,

and mahi mahi, Coryphaena hippurus”

 

 

FRIDAY, FEBRUARY 24, 2012

12:00pm

RSMAS campus, S/A 103

Pamela Harris
Administrative Assistant
Marine Biology and Fisheries
Rosenstiel School of Marine and Atmospheric Science
University of Miami
4600 Rickenbacker Causeway/SLAB-118
Miami, FL 33149
(305) 421-4176
fax - (305) 421-4600
pharris@rsmas.miami.edu
http://www.rsmas.miami.edu/academics/divisions/marine-biology-fisheries/

On 2/16/2012 4:16 PM, Pam Harris wrote:

 

MBF Student Seminar Series

 

Jessica Luo

Advisor: Dr. Robert Cowen

“Fine scale distribution of siphonophores and a narcomedusae bloom across a front in the Southern California Bight.”

 

Gelatinous organisms are becoming increasingly recognized as important components of marine ecosystems, but knowledge of their coarse, and particularly, fine scale spatial-temporal distributions are often lacking. Using the towed In Situ Ichthyoplankton Imaging System (ISIIS), which images plankton using a shadowgraph technique, we sampled a frontal feature in the Southern California Bight in October 2010 along three cross-front transects where ISIIS was undulating from the surface to 140m. We present preliminary data on the distribution of gelatinous hydrozoans with respect to the physical environment, the scaling of patch dynamics, and their co-occurrence within a community context.  We discovered a bloom of the seldom-observed narcomedusae Solmaris rhodoloma coincident with the frontal feature, with highest concentrations exceeding 1350 individuals m^-3.  Siphonophores of five taxa were also quantified: Sphaeronectes spp., Diphyidae, Physonectae, Lilyopsis rosea, and Prayidae, listed in order of abundance (27 to 2 individuals m^-3).  The siphonophores appear to be negatively correlated with S. rhodoloma, and also are highly aggregated at different scales of patch size by taxa. Through this research, we are able to begin examining the biophysical drivers of and the role of certain taxa within the community dynamics of gelatinous hydrozoans.

 

 

FRIDAY, FEBRUARY 17, 2012

1:00pm

RSMAS campus, S/A 103