We are back home! Last post from the Chief Sci

Scientists and crew sign the NF1703/04 NOAA Corps flag 

First of all thank you for following our research expedition by reading our blog! My name is Estrella Malca and I was the chief scientist for this survey (NF1704) aboard the NOAA Ship Nancy Foster. What does that mean? Each project has a designated person that takes a leading role on the logistical, scientific and reporting aspect of the entire survey. 

One last selfie!
Estrella (Chief Sci) and Samantha (Senior survey tech)

I love to figure out the 'tetris' of things, so this year's cruise has been challenging but fun! Why challenging? Well, usually we have 6 months+ to prepare for our surveys: buying equipment, supplies, assigning scientists and volunteers to participate, and most importantly, securing any relevant permits as well as communicating with the ship's officers and crew about the multiple operational aspects of our project at sea. However, because of our very recent NOAA RESTORE project selected for funding, we had just two months to get a brand new project planned, signed and delivered on time! Without the rest of the science team, there is no way we can come out here and successfully achieve all of our research goals and deliverables!


We had the pleasure to continue to collaborate with several of our partners and also obtained new research connections!

NF1704 Leg 1 scientists

NF1704 Leg 2 scientists

Estrella and Niki deploy our very last satellite tracked drifter

Here is a list of our NF1704 accomplishments!! We were quite busy this  past month as you can see!

ü  500++ Tunas collected, more than 600 specimens individually measured at sea

ü  90 CTD casts: Depths were (300m, 500m, 1500m, and 2500m). The sensors we used on the CTD included temperature, oxygen, salinity, chlorophyll-a and CDOM, conductivity, PAR.
ü  Continuous measurements of currents (ADCP) from Key West to Progreso and to Miami

ü  Continuous measurement of flow through (TSG) from Key West to Progreso and to Miami

ü  7 SVP Drifters were deployed

ü  546 Flow cytometry samples (phytoplankton, bacteria, water column abundance)

ü  72 Elemental Nitrogen (N₂)-fixing organism samples

ü  6 casts with PAR (Photosynthetically-Active Radiation) sensor

ü  207 Microbial Abundances and Biomass samples

ü  95 Sediment Trap Flux samples

ü  78 Thorium concentration profiles (dissolved + particulate)

ü  354 Primary Production and Nitrate Uptake

ü  226 Deckboard Incubations for nitrogen utilization rates

ü  120 Shipboard Nitrate Concentrations

ü  57 Deckboard Incubations for δ¹⁵N.

ü  130 Nutrient Profiles for NO₃^- + NO_2,^-PO₄^3- and isotope analyses (δ¹⁵N and δ¹⁸O)

ü  95 Mesozooplankton Biomass and Grazing

ü  48 Growth and Grazing Rate Profiles (8 experiments x 6 depths)

ü  279 Phytoplankton Pigments fluorometric Chla,

ü  210 High-performance liquid chromatography  samples

ü  19 ring net tows (100m)

ü  136 net tows (25m): 120 Bongo-90 (240 jars) & 16 Mini-bongo net tows

ü  16 Mesozooplankton and 16 microzooplankton samples

ü  120 Live-sorted plankton samples
ü  95 specimens selected for genetic analysis
*   40+ Open House attendees. Our outreach event welcomed our scientific counterparts, students, professors, and fishermen in Progresso, Mexico

We hope that our projects will fill in a lot of the gaps about the biogeochemical ecosystem in the Gulf of Mexico as it relates to bluefin tuna research for the Western Atlantic stock. Our results will be shared with local and regional stakeholders like NOAA, ICCAT, among others. Soon, we will get started working up the data! Stay tuned and read our posts!

Group selfie, navigating into to the port of Miami

Featured Scientist: Jose Quintanilla

Our annual surveys would not be possible without our wonderful collaborators from around the world. We'll dedicate several future blog posts to highlight these individuals, so that you can learn more about them, their research, and the valuable contributions they make to the survey. You can find previous posts here. Today we feature Jose Quintanilla from IEO!

Deploying the Bongo-90 in the GOM

My name is Jose Mª Quintanilla Hervás. I am one of the scientists in the Larval Ecology Group belonging to the Spanish Institute of Oceanography (IEO), which is the public organization that carries out research in the oceans of Spain. For the last decade, my research has been focused on larval growth of different species in the Mediterranean sea (such as sardines, anchovy, bluefin tuna) and how it is influenced by environmental and trophic variables.

Jose searches for the elusive bluefin tuna in the plankton sample

Dr. Quintanilla fractions mesozooplankton in the wetlab

This is my first time in this survey in the GOM. I'm very pleased to take part in it and to have the opportunity to continue the collaboration with our colleges from NOAA in order to improve our knowledge of bluefin tuna larval ecology from a multidisciplinary point of view in the framework of ECOLATUN project. One of my main interests is to establish a robust criteria for age reading of bluefin tuna larvae in order to be able to compare growth patterns of populations from Mediterranean and GOM and try to the determine the most important factors related with different growth rates in both areas taking into account that growth is one of the most important factors in larval survival and, therefore, in the recruitment and viability of the species.

Jose discusses his otolith research back in the Malaga, Spain

Nowadays, our group is interested in the study of the potential effect of larvae feeding behaviour on their growth based on Stable Isotope Analysis (SIA) and Compound Specific Isotope Analysis (CSIA)

Featured Scientist: Dr. Raul Laiz Carrion!

Dear reader, today we feature a guest post by Dr. Raul Laiz Carrion. Please scroll down for English. 

Raul and Lulu collect plankton

En esta campaña NF1602, somos muy afortunados de nuevamente contar con la participación del Investigador del Centro Oceanográfico de Málaga del Instituto Español de Oceanografía (IEO) el Dr. Raul Laiz-Carrión! Raul se ha convertido en un “clásico” de nuestro equipo de trabajo en las campañas de investigación del Mar Caribe, gracias a la estrecha colaboración que existe entre el IEO y el FORCES Lab del SEFSC-NOAA. 

Measuring fish before freezing them in Liquid Nitrogen

Esta fructífera colaboración entre las dos instituciones ha dado lugar a que actualmente se haya conseguido financiación de la Secretaria de Estado de Investigación,  Desarrollo e Investigación del Ministerio de Economía y Competitividad de España para realizar el proyecto ECOLATUN (CTM2015-68473-R-MINECO/FEDER), titulado: “ECOLOGIA TROFICA COMPARATIVA DE LARVAS DE ATUN ROJO ATLANTICO (THUNNUS THYNNUS) DE LAS AREAS DE PUESTA DEL MEDTERRANEO-NO Y EL GOLFO DE MEXICO.”


El principal interés del Dr. Laiz-Carrión se centra en la ecología larvaria de 
especies de especial interés no solo desde el punto de vista económico sino fundamentalmente ecológico, como puede es el atún rojo. En los últimos años ha centrado sus investigaciones en tratar de explicar la variabilidad en el crecimiento a través de las diferentes estrategias tróficas en estadios de temprana edad... “Pequeñas variaciones en el crecimiento pueden originar grandes cambios en la supervivencia larvaria y por consiguiente en el reclutamiento de la especie. 

PI Lamkin and PI Laiz-Carrion 

Tratamos de entender estas variaciones en el crecimiento no solo con la caracterización de los diferentes hábitats de puesta, sino también entendiendo la ecología trófica de la especie objeto de estudio y su interacción con otras especies que la acompañan y con las que puede compartir los recursos alimenticios a lo largo de la cadena trófica. Todo esto lo abordamos desde el punto de vista comparativo entre el Golfo de México y áreas adyacentes y las aguas del Mar Balear del Mediterráneo. Para abordar este proyecto tan ilusionante, es una verdadera suerte el poder contar con la participación y el apoyo de expertos de reconocido prestigio internacional de diferentes instituciones americanas (NOAA, Univ. of Miami/CIMAS, CUNY, WHOI), mexicanas (ECOSUR) y españolas (IEO).”

A brief summary in English:

Raul processes data from the Mini-Bongo net

During this research survey (NF1602) we are lucky to once again have the participation of Dr. Raul Laiz-Carrión, a researcher from the Centro Oceanográfico de Málaga del Instituto Español de Oceanografía (IEO). Raul has become a “classic” member of our team during our Gulf/Caribbean surveys as a result of the close-collaborations between his Lab at the IEO and the NOAA NMFS FORCES Lab. Our productive collaboration has proven effective as we recently awarded a proposal from the Research Ministry of Spain (Secretaria de Estado de Investigación,  Desarrollo e Investigación del Ministerio de Economía y Competitividad de España) in a project titled: “Comparative trophic ecology of bluefin tuna (Thunnus thynnus) in spawning areas in the Northwest Mediterranean and the Gulf of Mexico.”

Raul’s research is focused on the larval ecology for species of interest (not just from a commercial emphasis, but mainly from an ecological context). In the last few years, Raul’s work has investigated the natural variability in growth by examining trophic strategies during the earliest larval stages. Recently we have compared the Balearic Sea (Mediterranean) with the Gulf of Mexico thanks to our multidisciplinary and international support from NOAA, UM/CIMAS, CUNY, WHOI, ECOSUR (Mexico), IEO (Spain).