{"id":30872,"date":"2018-12-27T10:51:22","date_gmt":"2018-12-27T14:51:22","guid":{"rendered":"https:\/\/www.fondriest.com\/news\/?p=30872"},"modified":"2022-08-29T08:50:15","modified_gmt":"2022-08-29T12:50:15","slug":"harmful-algal-bloom-research-and-underwater-imaging-are-some-of-the-many-highlights-at-florida-atlantic-university-harbor-branch-oceanographic-institute","status":"publish","type":"post","link":"https:\/\/www.fondriest.com\/news\/harmful-algal-bloom-research-and-underwater-imaging-are-some-of-the-many-highlights-at-florida-atlantic-university-harbor-branch-oceanographic-institute.htm","title":{"rendered":"Harmful Algal Bloom Research and Underwater Imaging Are Some of the Many Highlights at Florida Atlantic University Harbor Branch Oceanographic Institute"},"content":{"rendered":"

Just a few of the major research foci at Florida Atlantic University-Harbor Branch Oceanographic Institute (<\/span>FAU-HBOI<\/span><\/a>) are: aquaculture and stock enhancement, marine biomedicine and biotechnology, the Indian River Lagoon Observatory, coral reef health and conservation, optics and underwater imaging, marine mammal research and conservation, marine ecosystem health, fisheries and conservation, ocean engineering and technology, population biology and behavioral ecology, harmful algal blooms (HAB), ocean dynamics and modeling to name a few. There is also a collaboration with NOAA through the Cooperative Institute for Ocean Exploration, Research and Technology (<\/span>CIOERT)<\/span><\/a>.<\/span><\/p>\n

While research has been ongoing at Harbor Branch for over 45 years, the Florida Center for Coastal and Human Health at Harbor Branch Oceanographic Institute has only been in existence since July 2018. Amy Wright, Administrative Director of the Center and Research Professor at FAU-HBOI in Chemistry and Biology, explains the research going on at the new center in particular:<\/span><\/p>\n

\u201cA major research focus of the Center is Harmful Algal Blooms (HAB), primarily on the East Coast of Florida,\u201d says Wright. \u201cIn the Indian River Lagoon, one of the most common places for us to see blooms, we are on the lookout for Aureoumbra, Pyrodinium, Pseudo-nitzschia, and Microcystis, all of which can cause blooms. Certain sites are more typical for HABs than others. We often see blooms of the cyanobacteria Microcystis in the St. Lucie Estuary and southern Indian Lagoon. The microalga, Aureoumbra, is responsible for brown tides, which block light to seagrass beds and cause fish kills. The dinoflagellate Pyrodinium produces saxitoxin, which can cause paralytic shellfish poisoning. A relatively new microbe that we see now, Pseudo-nitzschia, makes domoic acid, which causes amnesic shellfish poisoning. There are many different types of microorganisms in the IRL prior to an algal bloom\u2026how do they interact…what causes the blooms? Quite a few of our FAU students are working on that question.\u201d<\/span><\/p>\n

\"Harbor

The LOBO package of underwater sensors at IRLON site SLE-ME is being deployed by HBOI Engineer Ben Metzger and Scientist Jon Richardson. (Credit: IRLON, FAU Harbor Branch)<\/span><\/p><\/div>\n

One of Wright\u2019s colleagues, Dennis Hanisak, FAU Harbor Branch Research Professor and Education Director and Integrative Biology PhD program faculty member, oversees the Indian River Lagoon Observatory (IRLO) data gathering and its network of environmental sensors (IRLON) which provide real-time water quality data to users that include scientists, lagoon managers, students and the public.<\/span><\/p>\n

\u201cThe Indian River Lagoon Observatory Network of Environmental Sensors (IRLON) provides continuous, high-resolution measurements for physical parameters: temperature, conductivity, depth, turbidity, and current speed and direction; chemical parameters: chromophoric dissolved organic matter (water color), nitrate, orthophosphate, dissolved oxygen, and pH; and a biological parameter: chlorophyll-a fluorescence (an indicator of algal abundance). A weather station integrated into each IRLON site is concomitantly measuring the following parameters: air temperature, barometric pressure, humidity, rain, photosynthetically active radiation (PAR), wind direction, wind gust, and wind speed,\u201d says Hanisak.<\/span><\/p>\n

Below is a chart (from their website) which summarizes manufacturers, instruments and measurements made at IRLO:<\/span><\/p>\n\n\n\n\n\n\n\n\n\n
Manufacturer<\/b><\/td>\nInstrument<\/b><\/td>\nMeasurements<\/b><\/td>\n<\/tr>\n
Satlantic<\/span><\/a><\/td>\nLOBO<\/span><\/a><\/td>\nPower distribution<\/span><\/a>,\u00a0Sensor control<\/span><\/a>,\u00a0Wireless communication<\/span><\/a>,\u00a0Data management<\/span><\/a><\/td>\n<\/tr>\n
Satlantic<\/span><\/a><\/td>\nSeaFET pH<\/span><\/a><\/td>\npH<\/span><\/a><\/td>\n<\/tr>\n
Satlantic<\/span><\/a><\/td>\nSUNA Nitrate<\/span><\/a><\/td>\nNitrate Concentration<\/span><\/a><\/td>\n<\/tr>\n
WET Labs<\/span><\/a><\/td>\nWQMX Water Quality Monitor<\/span><\/a><\/td>\nSalinity<\/span><\/a>,<\/span> Temperature<\/span><\/a>,<\/span> Dissolved Oxygen<\/span><\/a>,<\/span> Turbidity<\/span><\/a>,<\/span> Chlorophyll Concentration<\/span><\/a>,<\/span> CDOM (Water Color)<\/span><\/a>,<\/span> Depth (Pressure)<\/span><\/a><\/td>\n<\/tr>\n
WET Labs<\/span><\/a><\/td>\nCycle PO<\/span>4<\/span> Meter<\/span><\/a><\/td>\nPhosphate<\/span><\/a><\/td>\n<\/tr>\n
Nortek<\/span><\/a><\/td>\nAquadopp<\/span><\/a><\/td>\nCurrent Speed<\/span><\/a>,<\/span> Current Direction<\/span><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

View data, here.<\/a><\/span>\u00a0 The current data are available on that page. \u00a0For all archived data, see the LoboViz tab.<\/span><\/p>\n

\"Harbor

It takes a team of scientists and engineers to deploy the underwater sensors and weather stations at each IRLON site (left to right: Jon Richardson, Dave Bourdette, Ben Metzger, and Dennis Hanisak) (Credit: IRLON, FAU Harbor Branch)<\/span><\/p><\/div>\n

\u201cWe also employ more traditional methods for data gathering at Harbor Branch in addition to the LOBO sites,\u201d says Wright. For example, during sampling trips, Secchi disks are still used to gather data on water clarity. \u201cTraditional methods can be significantly cheaper but don\u2019t provide continuous monitoring. Each IRLON site initially costs about $120,000 to set up,\u201d Wright explains. Hanisak adds, \u201cFAU-HBOI invested in the first IRLON site in 2013 and then a grant from Harbor Branch Oceanographic Institute Foundation expanded the network to four sites, all in Indian River and St. Lucie Counties. State funding through the Florida Department of Environmental Protection expanded the network with five sites in the St. Lucie Estuary and the nearby Indian River Lagoon. The final site in the C-44 Canal of the South Fork of the St. Lucie Estuary was added in 2016 with a grant from the South Florida Water Management District.\u201d<\/span><\/p>\n

One of Wright\u2019s colleagues, FAU Associate Professor Laurent Ch\u00e9rubin, has developed smart sensor enabled drifters that are being used to measure ocean dynamics and recently, red tide blooms. \u00a0The drifters perform real-time sensing and send the data back wirelessly.<\/span><\/p>\n

\u201cOur drifters were designed to operate in the coastal environment and therefore they are connected via cellular to a web server that displays the data collected and the drifter location in real-time. They measure temperature, salinity, CDOM, chlorophyll, and light scattering,\u201d says Ch\u00e9rubin. \u201cThese drifters are made to be deployed and recovered. They can be quickly mobilized to monitor any sort of bloom, release, discharge, etc. We have used them to study the water exchange between the nearshore and the IRL through Fort Pierce inlet and identified the factors that affect this exchange. More recently we have deployed them during the red tide event. Their measurements and pathways captured the general northward movement of the red tide. Through a sudden southward reversal in their path we were able to anticipate that the red tide was moving south again, which was confirmed by the IRL county warning messages. Chlorophyll measurements also confirmed the near shore concentration of the algal bloom.\u201d More about the drifters can be found <\/span>here<\/span><\/a>. <\/span><\/p>\n

In addition to gathering chemical data, Harbor Branch also wants to gather information on the genomics of the IRL in an effort to understand the whole system, specifically HABs. \u201cWe are doing metabolomic studies that monitor many organic molecules, not just toxins,\u201d says Wright. We are also monitoring for toxicity using a panel of cell lines.\u201d Nick Dickens does genomics and gathers eDNA data. Various researchers also collect water samples which contain fish cells in the Indian River Lagoon. These are used for eDNA analysis in the DNAngler citizen science program.<\/span><\/p>\n

\"Harbor

All IRLON sites are strategically located to capture freshwater and\/or oceanic inputs into the estuary, such as this site located in the \u201ccrossroads\u201d, where the St. Lucie Estuary, Indian River Lagoon, and St. Lucie Inlet intersect. (Credit: IRLON, FAU Harbor Branch)<\/span><\/p><\/div>\n

FAU-HBOI is also looking at toxin distributions in rays and sea turtles. \u201cA variety of optical measurements of HAB using Seabird technology as well as multi-spectral forward and backward light scatter data are also collected.\u201d<\/span><\/p>\n

One of the special technologies Harbor Branch has that most research stations do not is an underwater holographic microscope. Jim Sullivan, Director of Harbor Branch Oceanographic Institute and PI on the holographic microscope project, is one of the creators of the system.<\/span><\/p>\n

\u201cThe Holographic Microscope has been sponsored by the <\/span>NSF OTIC program<\/span><\/a>. The microscope is a second generation device that operates under water. It can scan a few milliliters of water at a time, with each holographic image capturing about a half liter of water. It is autonomous, not connected to a boat, and programmed to operate on its own. It weighs about 70 lbs. in air,\u201d says Sullivan. \u201cEach particle detected by the microscope is represented in 3D in terms of the sampled volume and location in space. The first generation of this device was attached to a boat with a fiber optic cable. It weighed about 200 lbs. Its development was sponsored by the Office of Naval Research. In terms of environmental monitoring, we can put the microscope on a mooring in the sea and deploy it for about three weeks. We can look at HABs as they develop in real time, in 3D, and monitor the population as it changes. We can also look at phenomena such as coral spawning and larval fish recruitment, again, in real time and in 3D. A great thing about this technology is you can monitor plankton populations in their natural environment without disturbing them. You can also look at predator\/prey relationships in a way not available through other techniques. For example, you may want to know: how do zooplankton prey on algae? To look at that, we can take pulse-pair images that look at the displacement of particles, in this case, looking at phytoplankton in a fluid environment, to look at how the images change as the \u2018chase\u2019 happens, and see how the microorganisms respond to flow.\u201d<\/span><\/p>\n

\"Harbor

Top Left: Housing and internal components of the next generation autonomous holographic microscope (AUTOHOLO). Top Right: Deployment of the first generation in situ holographic microscope (HOLOCAM). Bottom: Images of various plankton and particles from the first generation HOLOCAM. (Credit: James Sullivan)<\/span><\/p><\/div>\n

When it comes to students, FAU-HBOI has many FAU undergraduate and graduate students working on a variety of projects, many focused on aspects of HABs. In the summer, interns come to Harbor Branch from all over the country to do research, including the University of New Hampshire and the University of Connecticut.<\/span><\/p>\n

In terms of the history of Harbor Branch Oceanographic Institute, Wright had this to say: \u201cHBOI has a long history of ocean exploration, engineering and environmental research. The Center started in July, so that\u2019s one of the latest developments. Eleven years ago, Harbor Branch became part of Florida Atlantic University. It has since added 12 new principal investigators. IRLON has been going on for five years.\u201d<\/span><\/p>\n

Wright has been at Harbor Branch for 34 years. \u201cThere is so much great work being done here, I have not really been able to mention everything,\u201d she admits. \u201cI myself spend a lot of time trying to discover new medicines. But that\u2019s another story entirely.\u201d<\/span><\/p>\n

Top image:\u00a0The first HBOI IRLON site was deployed in 2013 on an HBOI channel marker in the Indian River Lagoon. (Credit: IRLON, FAU Harbor Branch)<\/span><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

With research ranging from harmful algal bloom mitigation to development of a holographic microscope, Harbor Branch work benefits scientists and the general public.<\/p>\n","protected":false},"author":21,"featured_media":30847,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,79,6,8,44,510],"tags":[1322,60,896,619,1320,1326,1321,1325,1178,109,1324,1323,503],"class_list":["post-30872","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-featured-articles","category-monitoring-gear-2","category-monitoring_tech-htm","category-newsfeed","category-oceans-coasts","category-water-quality","tag-aureoumbra","tag-featured","tag-florida-atlantic-university","tag-hab","tag-harbor-branch-oceanographic-institute","tag-holographic-microscope","tag-indian-river-lagoon-observatory","tag-irlon","tag-microcystis","tag-news-ticker","tag-pseudo-nitschia","tag-pyrodinium","tag-water-quality"],"remote_post_permalink":false,"remote_post_featured_image":false,"yoast_head":"\nHarmful Algal Bloom Research and Underwater Imaging Are Some of the 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