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

Outreach & Education: Nancy Opens her doors during our Progreso Open House

The ship Nancy Foster arrived for the first time to Progreso in Yucatán on May 19. On Saturday, May 20, we held an Open House event to explain the scientific research activities we carried out in the Gulf of Mexico. On this occasion we were accompanied by Dr. Mario González Espinosa, Director of ECOSUR, Dr. Magda Estela Domínguez Machín, Assistant Director of Fisheries Resources in the Atlantic of INAPESCA, Dr. Josefina del Carmen Santos Valencia, Chief of CRIP Yucalpetén, and Dr. Alvaro Hernández Flores, Professor-Researcher at MARISTA University, together with Doctorate students in Fisheries and Aquaculture Bioeconomics at the university. The students of Marine Biology (UADY), led by Dr. Alfonso Aguilar Perera, Professor-Researcher of UADY Marine Biology Faculty, were present as well as Mr. Manuel Sánchez González, President of the Yucatán Shipowners Union.

Mike Stukel explains the sediment traps to local fishers

Student explores plankton in the microscope!

While everyone explored the ship, scientists explained the main activities carried out during our campaign in the different laboratories. In the “wetlab,” everyone got an opportunity to see the many organisms that make up the plankton using microscopes. 

The wetlab is also where each sample is carefully examined to search for tuna larvae and multiple filtrations of seawater take place. In the “dry lab” all the controls for deployment and recovery of of equipment take place. On the back deck, we saw the equipment used to ascertain nitrogen sources in relation to the plankton food-web dynamics in the habitats of the BFT. 

Scientists examine specimens under the microscope

Chief Sci Estrella Malca discusses the project goals

This is novel and exciting because, despite its importance, these research activities are being conducted for the first time in the Gulf of Mexico! Finally, on the bridge, the NOAA Corps officers showed us the state of the art navigation equipment and instruments utilized to safely and accurately lead the ship to and from our sampling locations.

Mexico and US collaborators

Students and researchers asked questions about our various activities and were surprised by the great diversity of organisms observed in the microscope and those captured on the computer screen during this survey. We would like to thank everyone for participating and to all of the port agents, the scientists, crew and officers for making this a fun and well organized event!

Featured Scientist: Meet Lulu!

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 Lourdes Vásquez Yeomans from ECOSUR!

Today’s blog features our long-time collaborator and friend Lourdes Vásquez Yeomans, or “Lulu,” who is one of our most enthusiastic colleagues from Mexico’s ECOSUR (El Colegio de la Frontera Sur) Chetumal campus. Lulu is an ichthyologist in the Zooplankton Laboratory in the Departamento de Sistemática y Ecología Marina.

Lulu sorts plankton samples in search of bluefin tuna larvae

“I work with coastal and oceanic ichthyoplankton (eggs and fish larvae) mainly from the Mesoamerican Reef System, with emphasis on the Mexican Caribbean. ECOSUR has one of the best collections of larval fishes in Mexico! I am also one of the curators of this collection, and always facilitating its expansion. Thousands of fishes in the museum have been archived from the multiple joint-oceanographic surveys carried out with NOAA in Mesoamerican waters, the Eastern Caribbean, Cuba, and the Gulf of Mexico. An added value of this collection is that more than 4,000 specimens so far have been analyzed for genetic ID, so we know with certainty which species it is. One of our partners in this endeavor is the MEXBOL network as well as the BOLD consortium.

L-R: Jason, Lulu, Sydney, and Sarah rinse down the Bongo net

Lulu and Chief Scientist Estrella model their cruise shirts

“On this survey, I am using my skills as a taxonomist to help the team identify bluefin tuna larvae and other resources of high commercial value such as dorado, marlin, grouper, and snapper. My main goal on this survey is to increase my country’s understanding of bluefin tuna spawning events in our territorial waters. Bluefin tuna is a resource of high commercial value that has suffered a significant decrease in its abundance, which is an alarming situation. Bluefin tuna are also a shared resource between USA and Mexico, so we have to make collaborative academic partnerships like our 10-year academic and research partnership between NOAA’s FORCES lab and my Larval Fish Lab in ECOSUR.

The Night Shift! L-R: Sydney, Lulu, Jason, and Sarah

“I hope that many young marine biology students are motivated by this field of research! I think that it is necessary to continue these efforts. I am happy to participate in this project, and I am grateful to Dr. John Lamkin for being part of his team and the Mexican authorities (SEMAR, DIGAOHM, INAPESCA, SRE) for understanding the importance of these investigations and granting our project the scientific permits to work in Mexican waters."

Cozumel Open House: Guest Post by Lourdes Vasquez Yeomans

Dear readers, today we feature a guest post written by one of our long-time collaborators Lourdes Vasquez Yeomans (Lulu!). While the ship was in Cozumel, we opened our doors once again to another group of enthusiastic students that wanted to learn a bit about our research in the region. Lulu's post is in Spanish, please ask (in the comments) if you have any questions and I will be happy to answer them.

La M. en C. Lourdes Vasquez Yeomans con nuestros
 invitados comparte sobre su experiencia en la campana NF1602

Desde el 6 mayo al 19 del año en curso, la M. en C. Lourdes Vásquez Yeomans de la Unidad Chetumal participó en el crucero oceanográfico a bordo del buque Nancy Foster. Durante 14 días de travesía se obtuvieron muestras de plancton en el NE de Cuba y norte del Caribe mexicano con el objetivo de localizar áreas de desove de valiosos recursos pesqueros, sobre todo atunes, dorados y picudos. También se midieron variables físicas y registraron procesos oceanográficos. 

Estudiantes, profesores, e investigadores con la oficial ENS S. Thompson

El 19 de mayo el Nancy Foster arribó al puerto de Cozumel y el día 20 abrió sus puertas a miembros de la comunidad académica de Quintana Roo recibiendo la visita de estudiantes del Instituto tecnológico de Chetumal (ITCH) y la Universidad de Quintana Roo (UQROO).  También participaron de este recorrido, varios  miembros del personal administrativo de la Unidad Chetumal de ECOSUR. La oficial Ensign Sara Thompson dio una clara explicación de las maniobras y equipos de navegación del buque. Adicionalmente los científicos participantes en la travesía explicaron los objetivos centrales que justifican la realización de este tipo de cruceros de investigación, se explicaron también el funcionamiento de los equipos utilizados para los muestreos biológicos en la columna de agua así como para la obtención de las variables físicas medidas con equipos oceanográficos especializados.  Todo ello implica un esfuerzo coordinado de equipos bien definidos de trabajo que cubren dos horarios de muestreo. 

Lief comparte detalels sobre el esfuerzo de multibeam del Banco San Antonio

Los estudiantes, profesores y personal participante hicieron diversas preguntas sobre las actividades realizadas por los científicos especialmente las que implican el reconocimiento de las especies objetivo, medición y toma de fotografías,  sobre las fuentes de financiamiento para lograr cubrir los costos de un buque de este magnitud, así como de los equipos utilizados para las mediciones de variables físicas. Manifestaron su interés de participar en una de las últimas estaciones de trabajo, si vuelve el Nancy Foster el próximo año, dijeron “queremos subir al NF ver directamente como trabajan los científicos!” una propuesta  para los jefes de campaña John Lamkin, Estrella Malca y Ryan Smith.

Eloy y Lulu explican la maniobra de la MOCNESS abordo