Tag: Oceanography

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Exploring Ocean Worlds

NOAA’s Chief Scientist Charts Course Toward a New Blue Economy (IEEE Earthzine, March 2016)

From energy to forecasting capabilities, oceans hold answers to big questions. Image Credit: NOAA

In 2016, I interviewed Dr. Rick Spinrad for IEEE Earthzine; Sprinrad was serving as chief scientist of the National Oceanic and Atmospheric Administration (NOAA), the country’s premier agency on climate science. In May of 2021, President Biden announced that he would be nominating Spinrad to lead NOAA. I thought back on this conversation, where I learned so very much, and thought it would be worth sharing again.

Dr. Richard Spinrad is a busy fellow. As the National Oceanic and Atmospheric Administration’s (NOAA) first chief scientist in 18 years, he’s a man on a mission. Spinrad attends conferences, goes to meetings on Capitol Hill, speaks with industry players, and talks to stakeholders all over the country.

Spinrad speaks passionately about ocean observations, a changing climate, and a new emerging blue economy where information potentially translates to money in the bank.

While a concrete definition of the blue economy is still emerging, it is clear that it represents a healthy marriage between the economic and the sustainable – a shift away from a solely extraction-based approach to one that considers the health of our ocean ecosystems both now and in the future.

When asked for examples of how ocean data can be transformative, the floodgates open. Spinrad and his colleagues say the ocean services community could be riding a wave to incredible opportunities for economic development, from oil spill prevention and cleanup to ocean temperature forecasts, coastal land management and pharmaceutical research.

For example, harmful algal blooms (HABs) or red tides in the Gulf Coast region produce aerosols, which cause major respiratory problems for many people. NOAA is monitoring HABs and collecting copious amounts of data. Spinrad sees this as an opportunity for the research community to develop HAB forecasts, which can be used just like weather forecasts for effective decision-making.

“Like a weather forecast, it doesn’t tell you take an umbrella today; it tells you it will rain today. It’s up to you to decide, will I take an umbrella or not?” he explained.

From there, a third party can use the HAB forecast and build a tailored product specifically for the public health sector to help clinics and hospitals know when to order extra supplies and prep for an influx of patients with severe asthma.

On the West Coast, where shellfish are part of a $260 million dollar aquaculture industry, integrated observations have helped hatcheries monitor corrosive waters caused by ocean acidification, which upwells and moves into the bays and estuaries.

Ocean acidification is the result of excess carbon dioxide from the atmosphere absorbed by the ocean; it is also part of natural cycles. The phenomenon negatively impacts early development of calcifying organisms like clams and oysters, and new research suggests that coral reefs are seriously endangered by corrosive waters as well.

A network of buoys, sensors, and observing tools fall under the umbrella of NOAA’s U.S. Integrated Ocean Observing System (IOOS), which also is connected to regional networks around the globe. By working with NOAA and ocean researchers, shellfish farmers have been able to use IOOS and regional data to adapt their practices and stay in business in spite of changing ocean chemistry as a result of ocean acidification.

This image shows how a pteropod, a small ocean snail many ocean critters rely on for food, is affected by ocean acidification. Image Credit: NOAA Pacific Marine Environmental Laboratory

NOAA’s vastly improved forecasting was evident in 2012 during Hurricane Sandy, which wrought havoc up and down the eastern seaboard, killing 145 people and causing $50 billion in property damage. Spinrad says spot-on forecasts enabled retailers and transportation officials to redirect shipments during the hurricane, allowing goods to make it to the shelves in time for Christmas in 2012. 

To Spinrad, data and predictive services like these are the currency of the realm. While government agencies and research institutions are collecting tremendous amounts of data, given limited available resources, an agency like NOAA cannot develop all these consumer products. However, the data is ready for some enterprising person to turn information into a product that people want and need.

In October 2015, at an xPrize panel on using ocean data to the fullest, Spinrad told the room full of industry leaders that NOAA collects 20 terabytes of data a day. There are, however, cultural obstacles to turning this data into services. According to Spinrad, while other research-based industries like medical, engineering, and tech have been capitalizing on the fruits of their labors for years, the ocean research community may have not fully embraced this way of thinking, yet.

“One might argue that we’re in the same place the engineering community was decades ago and it’s going to take a recognition that by commercializing, by monetizing our research, we are not giving up the posture that we have in basic research,” Spinrad said.

In the early days of engineering, research was driven by a curiosity to understand how things worked, but as that research unearthed discoveries that led to things people wanted, like automobiles and superfast computer processors, there was a public demand for those products. This demand fundamentally transformed engineering in many ways.

He added: “So the examples we’ve just talked about don’t have a lot of pull just yet. There’s not a demand and a pounding on the table for operationalized harmful algal bloom forecasts around the country.”

Spinrad laughing at the MTS/IEEE OCEANS ’15 conference in Maryland. Image Credit: Jenny Woodman

Of course, Spinrad understands the pull of basic or fundamental research. “There’s a romance,” he said. “I don’t have any colleagues that I can really think of who went into oceanography to make big money.” He adds that there is nothing wrong with setting out to make money, but he knows many researchers want to be on the leading edge of fundamental discoveries.

He was lured to oceanography by a failed eighth-grade science project and a fantastic New York City public school teacher. Spinrad set out to build an echo sounder, which he planned to use in the East River in New York City. His teacher put him in contact with an oceanography graduate student at Columbia University and pushed him to move forward with the project.

“Well, it failed miserably and I was hooked,” he said with a characteristic grin. “The teacher could have given me an F. He didn’t. He asked me to explain why I thought it wasn’t working. I was fascinated.”

Spinrad also recalls making his father bring home vials of water from each and every business trip. He would boil the sample down and look at the precipitate, hoping to compare one part of the country to another. Although he now suspects his busy father may have simply added salt to tap water, he was fascinated nonetheless.

It may just be this sort of patient persistence combined with his enthusiasm for science that makes Spinrad the right person to get people to see the enormous untapped potential in ocean research.With half of the anti-cancer drug discoveries coming from marine products and marine organisms, and millions of undiscovered species in our ocean, he says ocean services could see a future similar to that of his colleagues in other fields like engineering.In order to make this happen, society will need to make a substantial commitment to sustained ocean observation. This is an area where he sees dramatic room for improvement.

At an MTS/IEEE OCEANS ’15 panel, Chris Sabine, lab director for NOAA’s Pacific Marine Environmental Lab, spoke about ocean acidification and the huge expanses of ocean for which there are few measurements. Sabine is a leader in ocean acidification research, a phenomenon that was little understood 10 years ago, but presents real concerns today. He warns that ocean acidification “is something happening right now, not something we are predicting for the future, and it will only continue as long as we continue to produce carbon dioxide.”

Sabine expressed a need for incredibly durable instruments able to detect small variations in waters out in the open ocean where pH levels are harder to understand. The coastal waters have much more variation and more detectable levels so sensors can be designed around affordability.
Spinrad concurred: “We’re woefully deficient in our observations and monitoring capacity in the oceans in general.”

Without sustained observations, it may not be possible to understand processes like ocean acidification, because critical data will be missing– data that can be used for modeling what is happening in the carbon system.
Spinrad says there aren’t arguments against sustaining NOAA National Weather Service’s Doplar Radar system every year, because people understand the economic impacts of weather on transportation, commerce, tourism and hospitality. Add in the cost of rebuilding communities after major disasters, and people understand why an investment is needed in weather observation satellites and sensors.

Oceans observations are not at that point yet, but Spinrad sees this emerging blue economy, based on information and predictive services, as the way to get much-needed support for ocean observations.
He emphasizes that researchers have only been looking at something like ocean acidification for a few years. It’s happening everywhere, but they haven’t been able to study it in places like the Arctic, because it isn’t easy to make observations underneath the ice.

Data from more than 3,500 Argo floats are combined with satellite data to provide accurate information to guide research and decision-making. Image Credit: NOAA Pacific Marine Environmental Laboratory

“Imagine if we said that we were going to provide the weather forecast for the lower 48 states by having one temperature measurement every five states. That’s about the density of observations we’ve got from the Argo float system that’s drifting around the world’s oceans,” he argues. “It looks great when you’re looking at it on a map – it’s got all sorts of dots on it, but it’s really not that well-populated.”

Spinrad remains optimistic and sees positive momentum based on the number of young people who are interested and passionate about addressing problems like ocean acidification.

“I’m encouraged as an old guy,” he joked before getting serious. “I’m encouraged to see that the next generation of researchers understands this and is willing to invest in this, and that the federal government and other agencies are willing to put resources towards this as well.”

Ultimately, Spinrad would rather see a substantial investment in sustained and robust observations to address problems now, rather than leave them for future generations. And, a new blue economy may the best hope for making that happen.

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Exploring Ocean Worlds

What’s in the Water?

Deep sea coral in Cordell Bank National Marine Sanctuary. Image Credit: OET/Nautilus Live

Nicknamed the Dragon’s Cave, this hydrothermal vent site on the Lōihi Seamount was covered in microbial mats. Using remotely operated vehicles, scientists on board the E/V Nautilus collected eDNA samples near these mats for NOAA scientists working to develop technologies to better know our ocean. Image Credit: OET/Nautilus Live

All organisms shed cells. Just as you constantly slough skin cells, creatures in the ocean also leave traces behind, from enormous blue whales to deep sea corals to tiny microbes living at hydrothermal vents. These cells contain DNA, the molecule responsible for carrying genetic information for all living things.

Remains of an organism’s genetic material can tell scientists about the overall health of the ecosystem and the inhabitants. Environmental DNA or eDNA is an emerging area of study that may help researchers to better know the ocean and its inhabitants. eDNA is a DNA sample collected via an environmental medium such as soil or water; by examining the genetic traces left behind in that medium, scientists can study creatures without direct contact. This has been extremely useful for studying species that are particularly difficult to collect samples from such as Orcas and deep sea corals.

In the ocean, eDNA collection relies on water sampling in close proximity to specimens of interest. The sloughed cells from a species like a deep sea coral are pulled in with water samples, and those cells contain small amounts of DNA from the corals nearby. By amplifying sets of specific DNA sequences, coral biologists can use the small amount of eDNA captured in the water sample to identify the coral by its genetic fingerprint. This non-invasive technique could replace physical sampling for any species for which this technique is validated.

Coral sclerites imaged with a scanning electron microscope. Image Credit: NOAA NW Fisheries Science Center

Deep sea coral biologists have long been limited by the fact that physical specimens must be collected to make a species-level identification and taking coral samples, even prudently, is somewhat invasive. To make a species-level identification, the ultrastructure of the coral skeleton, specifically the sclerites, must be visualized by a scanning electron microscope. To minimize sampling, coral biologists have been searching for a new way to accurately identify corals to the species level.

Carol Stepien on board the Reseach Vessel Tatoosh deploying a device for sampling water for eDNA in the Olympic Coast National Marine Sanctuary. Image Credit: NOAA/Kim Andrews

Today, eDNA sampling is changing the way corals and other sea life are identified, and this technology may prove invaluable in future research. With only five percent of the world’s ocean explored, to some it is a race against time to learn as much as we can before some biodiversity is lost forever.

Carol Stepien is the Ocean Environment Research Division leader at NOAA’s Pacific Marine Environmental Laboratory in Seattle. Her Genetics and Genome Group is working to develop technologies that will help researchers in the future to assess oceanic communities and how, or if, they are being impacted by changes in the ocean using eDNA.

“We know almost nothing about creatures in the ocean,” said Stepien, adding that whole groups of species are being discovered, sometimes daily. “What we know is a drop in the bucket about who is in the ocean, especially when you get into the deep sea.”

To help expand that limited knowledge, she envisions building large DNA databases for species identification.

Stepien’s lab is collecting eDNA samples from Axial Seamount, an active underwater volcano in the NE Pacific Ocean, and from methane seeps along the Oregon and Washington Coast. They are focused on invertebrate communities such as clams and chemosynthetic organisms; her team is collaborating with other researchers who are looking at microbes. Ultimately Stepien hopes to develop genetic markers for DNA sequences that would aid identification through a massive collaboration between government, academia, and scientific institutions.

“We’re in the beginning of a scientific revolution of how to do this,” said Stepien. “It’s going to take a lot of different researchers working together — communicating, publishing, and developing these applications. We’re looking at developing highly diagnostic, fast and inexpensive tools for the future.”

Stepien thinks within ten years we will see something similar to Monterey Bay Aquarium Research Institute’s environmental sample processor (ESP), but with the capacity for eDNA monitoring, using drones and satellite transmission. The ESP instrument is basically a high-tech lab in a can that can be loaded onto an autonomous vehicle and deployed to collect and process samples without returning to land.

We need better records of creatures and organisms in the ocean and eDNA is an exciting tool because you don’t need to disturb the habitats or the sea life, according to Stepien. She sees a future where technology and scientific ingenuity are going to allow us to understand what is happening in the ocean in real time — problems like ocean acidification and hypoxia could be studied in situ without disturbing the ecosystem.

Her enthusiasm for the subject is contagious when she starts to talk about what is possible today and what we’ll be able to to in the future. “You’re able to start to focus and solve problems I never even dreamed of when I was in grad school,” Stepien said. “It is very fun and exciting as a scientist — I’m having such a good time working on this.”

Jenny Woodman, Proteus founder and executive director, is a science writer and educator living in the Pacific Northwest; she is a 2018 lead science communication fellow for the Exploration Vessel Nautilus. Follow her on Twitter @JennyWoodman.

Dr. Amber Hale is an assistant professor of biology at McNeese State University in Lake Charles, Louisiana. She uses molecular biology techniques in non-traditional model organisms. She is passionate about STEM education and science communication in her community.

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Environmental DNA – An emerging tool in conservation for monitoring past and present biodiversity by Philip Francis Thomsen and Eske  Willerslev

Self-driving robots collect water samples to create snapshots of ocean microbes by University of Hawai‘i and MBARI

The Power of ‘Environmental DNA’ For Monitoring Whales by GrrlScientist

Why We Need to Protect Deep Sea Corals Now by Sandra Brooke

Deep-Sea Coral Habitat by NOAA FIsheries

Deep-Sea Coral Protections Storymap by NOAA Deep Sea Coral Research & Technology Program Data Portal

Deep Sea Corals 101

Deep sea corals are colonial organisms made up of many individual organisms called polyps, working in concert to survive. Each individual has a job to perform in order for the entire colony to grow and thrive. While most people are familiar with colorful warm water corals found in shallow, tropical waters, these only represent about 15 percent of the world’s corals, according to the California Academy of Sciences’ Curator of Invertebrate Zoology and Geology, Gary Williams.

California Academy of Sciences’ Curator of Invertebrate Zoology and Geology Gary Williams, holding a coral sample in the E/V Nautilus wet lab. Image Credit: OET/Nautilus Live

The other 85 percent of corals are deep sea or cold water corals, which are hard to study because it isn’t easy to get to the deep ocean with any frequency. Cold water corals differ from their shallow water counterparts in many ways, but one major distinction is that they do not rely on a symbiotic relationship with the photosynthetic algae, zooxanthellae (pronounced zoo-uh-zan-thella), that live inside warm water corals.

In the upper layers of the water column where the sun’s rays penetrate, most organisms like zooxanthellae rely on photosynthesis for food production. The algae barters food for rent in the relationship with their coral homes.

The sun’s light cannot reach the deep waters where cold water corals live, so these corals must eat nutrients found in debris that falls from the shallower layers of the ocean – this mixed debris is often called marine snow. Due to the limited amount of marine snow reaching the seafloor and the harsh environment of the deep sea, these corals are slow growing, but can be extremely long-lived. Bamboo corals have been aged to be more than 450 years old!

ROV Hercules hovers over a deep sea coral in Cordell Bank National Marine Sanctuary. Image Credit: OET/Nautilus Live
Deep sea coral in Cordell Bank National Marine Sanctuary. Image Credit: OET/Nautilus Live
ROV Hercules collecting coral sample. Image Credit: OET/Nautilus Live
Deep sea coral in Cordell Bank National Marine Sanctuary. Image Credit: OET/Nautilus Live

Environmental or eDNA is a DNA sample collected via an environmental medium such as soil or water; by examining the genetic traces left behind in that medium, scientists can study creatures without direct contact. During the 2016 and 2017 E/V Nautilus expedition seasons, water samples were taken in close proximity to deep sea coral species of interest in Cordell Bank and Greater Farallones National Marine Sanctuaries. Corresponding physical samples were taken as well. With both the eDNA sample and the physical specimen, coral biologists worked to validate coral-specific eDNA protocols.

Biologists first amplify and sequence a set of DNA regions of interest from the eDNA sample, then these sequences are compared to corresponding sequences from the physical specimen. This creates a species-specific “DNA fingerprint.” Repeating this process for many species allows scientists to build a library of coral DNA fingerprints, enabling future biologists to confidently use eDNA samples to identify corals without the need for physical sampling.

 

 

Categories
Exploring Ocean Worlds

Discovering Ocean Worlds

The Exploration Vessel (E/V) Nautilus is a 211 foot former East German "fishing boat" fully outfitted for scientific exploration. Image Credit: OET/Nautilus Live

Copy of NAUTILUS DISTANCE-147
The Exploration Vessel (E/V) Nautilus is a 211 foot former East German “fishing boat” fully outfitted for scientific exploration. Image Credit: OET/Nautilus Live

I stood on the sidewalk swaying on solid ground, a phenomenon dubbed “dock rock” or “land sickness” by those who’ve spent time on boats. I looked over my shoulder at the big blue and white ship from which I had just disembarked with my usual grace and style. High tide made the gangway incredibly steep; I lost my footing and slid all the way down with my gear to the chorus of onlookers gasping.

After being at sea, a combination of exhaustion, adrenaline, and homesickness fueled a multitude of feelings. With a lump in my throat, I thought I might never get the chance to do something so unbelievably cool again. I had just spent two weeks with truly amazing people exploring the ocean floor – with robots.

Last summer, I served as a science communication fellow on board the Oceanographer Bob Ballard’s Exploration Vessel (E/V) Nautilus.

Our expedition took place in Cordell Bank National Marine Sanctuary. The 1,296 square mile sanctuary had nearly doubled in size since receiving its designation as a protected place in 1989. Prior to the expedition, the scientists responsible for managing the sanctuary lacked the resources to fully explore and understand what lived on the ocean floor, miles below the surface. We traveled along the Continental Shelf, exploring underwater canyons and steep cliff faces, collecting video footage and samples that were sent to hundreds of researchers around the country.

These observations were aided by two remotely operated vehicles (ROVs), or robots, named Hercules and Argus. The ROVs work in tandem, tethered to the ship and each other. Argus absorbs the ship’s movements and shines bright lights down on Hercules as it performs delicate maneuvers and operations below. Hercules is outfitted with multiple high definition cameras, a Kraft Predator arm, and a host of sampling tools that aid the Nautilus team in their mission to explore the biology, geology and archeology of wild and unexplored places in the ocean.

Whenever the robots are deployed the video is live streamed all over the world, allowing students, scientists, and fans to explore with the team. This technology takes humans to locations too costly, distant, and dangerous for in-person observations like active underwater volcanoes and hydrothermal vents.

Using the Nautilus’s technology and expertise in Cordell Bank, NOAA scientists were able to identify new deep sea habitats teaming with life. There were jellies, sharks, skates, and over 40 species of rockfish, swimming among deep sea corals and sponge communities – it was a remarkable experience from beginning to end. And, it turns out that last summer was not the last time I’d set foot on the Nautilus.

From August 20 to September 13, I’ll rejoin Ballard’s Corps of Exploration as lead science communication fellow for a joint mission with NASA, NOAA, and various academic centers. The expedition is part of a multi-year SUBSEA (Systematic Underwater Biogeochemical Science and Exploration Analog) Research Program.

We’ll be exploring the Lō’​ihi Seamount – an active underwater volcano off the coast of Hawaii. The hydrothermal venting and geologic features found at Lō`ihi (sounds like low-ee-hee) are thought to be similar to what scientists expect to find on other, distant, ocean worlds. We will be testing equipment and protocols as well as collecting samples and video to learn more about this geologically active and unique environment.

NASA is watching how the oceanographic community works in unusual environments in order to develop protocols for space exploration. When astronauts eventually make it to distant planets, it is unlikely that they will be able to land their spacecraft and walk on the surface right away. Using robotic technologies similar to what is used in ocean science, those astronauts will conduct their observations from the relative safety of their spacecraft – just like many ocean explorers here on Earth.

In order to allow a very large team of scientists and collaborators to participate from land, most of our dives will run from midnight to 4 p.m., Hawaiian time (HST). You can follow these dives online at www.nautiluslive.org and updates will be posted regularly on the Nautilus’s Twitter feed.

I’ll be standing watch from midnight to 4 a.m. and noon to 4 p.m. – moderating the questions coming in from the audience and helping translate the complexities of this work whenever the robots are deployed.

Last summer, I had no idea what to expect as I nervously put on my headset and sat down at my station for my first watch shift. Over the subsequent hours and days, I  learned about the science and biology of the deep ocean and the technology and teamwork that took us to this otherworldly place. I saw my first octopuses in the wild, graneledone boreopacifica, who brood their eggs for 4 years, and I learned that skate egg pouches are called mermaid’s purses. As I prepare to head back out, the work is more familiar, but I’m just as eager to see new and exciting wonders.

I hope you’ll come along and explore this blue planet with us!

Jenny Woodman, Proteus founder and executive director, is a science writer and educator living in the Pacific Northwest. Follow her on Twitter @JennyWoodman.

Read more

Why protect 600,000 square miles that most people will never see? by Jenny Woodman

E/V Nautilus 2018 Expedition Season Summaries

Mapping the Deep: The Extraordinary Story of Ocean Science by Robert Kunzig

Notes from the Nautilus by Jenny Woodman

 

Categories
Exploring Ocean Worlds Sea Sentries

Being On Station

Chase-CTD
The deck crew works to return the CTD rosette to the side deck. Image Credit: Julie Chase/ACCESS/NOAA/Point Blue

We’re on the fourth day of an Applied California Current Ecosystem Studies, or ACCESS, cruise — a long-term effort, now in its 15th year, to monitor and understand the oceanographic conditions, prey availability, and abundance and distribution of seabirds and whales in the region. The data collected on these cruises, which take place three to five times per year, are used to help inform decision-making and research priorities in North-Central California National Marine Sanctuaries. ACCESS is a partnership between NOAA National Marine Sanctuaries and Point Blue Conservation Science.

On the flying bridge, the observers and data logger are bundled for what is shaping up to be the coldest and windiest day of the expedition so far. The radios many of us wear, click and buzz in unison, “Bridge to flying bridge, 15 minutes to the end of the line.”

“Copy that, thank you,” Data Logger Taylor Nairn replies.

Yesterday, the ocean merged into the sky at the horizon point with rich shades of blue, but today grey blends into grey. The quiet is peaceful.

Once we reach the end of this transect line, we will be “on station.” At set points along each transect line, there are five to six stations where the ship stops so a team can collect samples using a variety of equipment and techniques. As the wildlife observers’ work for the morning concludes, the wet lab team and deck crew spring into action.

Jamie Jahncke is the director of the California Current Group for Point Blue Conservation Science. He selected these points along the transect for sample collection. To Jahncke, the greater number of sampling locations allow his team to paint a more accurate portrait of what is happening where the warm, surface layer of water rests on top of the cold nutrient-rich layer.

He explains, when people look at water, everyone thinks it all looks the same, but it’s not. There are all these points where tiny differences in temperature will impact the distribution of food and prey. “We’re looking for places where critters tend to aggregate, attracting seabirds and whales,” says Jahncke.

Down on the side deck, the Conductivity, Temperature, Depth (CTD) rosette is deployed. The CTD carries 12 Niskin bottles with levers that allow the team to open them strategically, collecting water samples at various depths up to 500 meters. (A detailed explanation of this can be found here and here.)

According to Jahncke, measuring how well a water sample conducts electricity, also known as conductivity, is directly related to salinity. Salinity is the concentration of salt and other inorganic compounds in seawater. Salty seawater is heavier than freshwater, as is cold water. Combined with temperature data, scientists are able to better understand how water properties and nutrients are distributed throughout the water column.

While crew and wet lab team are out on the side deck, Grace Kumaishi is inside prepping labels and materials for the samples that will come in. There’s a great deal of labeling and packaging to do, so it is clear when and where the materials were gathered. Additionally, the findings will be shared with least 10 different federal, state, and non-government research institutions.

Kumaishi was really nervous for this, her first big cruise. She’s a research assistant at Point Blue. Having just completed her bachelor’s in ecology, behavior, and evolution at University of California Los Angeles, she’s in that nebulous period between undergraduate work and grad school. She’s debating the pros and cons of masters and Ph.D. programs. This internship with Point Blue offers her the opportunity to build relationships with mentors, watch graduate students conduct their research, and see firsthand what a career in ocean science might look like.

Most days for Kumaishi are spent in the lab processing samples collected on cruises such as this one. “It’s really nice to get out of the lab and do some field work,” she says.

Chase-carinactd
Carina Fish collects water samples for her research on the ways climate change is altering ocean chemistry. Image Credit: Julie Chase/ACCESS/NOAA/Point Blue

Outside, the CTD is back on the deck and Carina Fish collects her samples first. Fish is doctoral candidate in marine biogeochemistry at University of California Davis’s Bodega Marine Laboratory. Using a small tube from the bottom of the bottle on the rosette, she rinses out a small brown glass bottle with seawater to make sure there are no contaminants. Then, she gives it a good shake, dumps the contents, and collects her sample. When Fish finishes she calls out, “Ryan, you ready?” He is there in a flash, using same process as Fish.

Ryan Anderson is working on a master’s in marine science with an emphasis on physical and chemical oceanography at San Francisco State University. The samples he gathers will be sent to a San Francisco State University lab to determine the amount of nutrients in the water.

Once Fish fills all her bottles, she adds mercuric chloride to each one; the chemical halts growth of any biological materials in the water without interacting with the carbonate chemistry that interests her.

Yesterday, Fish and I were up on the bow looking at a massive bloom of Chrysaora, or sea nettles. I asked her about the jellies; laughing loudly, she joked that she doesn’t know anything about “the living stuff.” Fish studies aragonite saturation states, which are used to track ocean acidification, a condition caused by climate change.

There’s a constant hum from the winch overhead and the deck vibrates beneath our feet. Everyone is wearing brightly colored foul weather gear, life jackets, and hard hats. On the side deck, we’re only about 12 feet above the water with heavy machinery and the ever-present threat of rough seas — safety is key.

Chase-GraceMeredith
Grace Kumaishi and Meredith Elliott retrieve zooplankton collected in a hoop net from the side deck of the NOAA Ship Bell M. Shimada. Image Credit: Julie Chase/ACCESS/NOAA/Point Blue

After the CTD is pulled in, the hoop net is carefully lowered over the side. Ship speed and the amount of cable released impact the success of this process, so there’s a great deal of coordination between the bridge, the winch operator, the deck crew, and the wet lab team. If the cable is not at the correct angle, the net will drag at a depth that doesn’t pull in the zooplankton.

Once retrieved, Point Blue Senior Scientist and Program Biologist for ACCESS Meredith Elliott and Kumaishi rinse the hoop net to direct everything captured down into a container at the bottom of the net called a cod end. The contents are dumped into a sieve and filtered. Elliott carefully rinses everything several times to make sure she gets all the biological samples.

The nets are used to measure the quantity and variety of food sources available for the wildlife being observed and counted on the flying bridge. This process will be repeated at each station on the transects completed every day.

People mill; everyone has to wait for the moment when it’s time to perform their individual part in the production. Since timing is of the essence, no one leaves until the deck ops are complete, in spite of the aroma of pulled pork and warm spices wafting from mess.

It is time for lunch, but not until the work is done.

Jenny Woodman, Proteus founder and executive director, is a science writer and educator living in the Pacific Northwest. Follower her on Twitter @JennyWoodman.

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Climate Change and Ocean Acidification by Cordell Bank National Marine Sanctuary

Searching for Answers at Sea: 2016 West Coast Ocean Acidification Cruise by Jenny Woodman