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Articles 1 - 30 of 37
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Regeneration Of Macronutrients And Trace Metals During Phytoplankton Decay: An Experimental Study, Adrienne P. Hollister, Makenzie Kerr, Kema Malki, Eric Muhlbach, Maya Robert, Charles L. Tilney, Mya Breitbart, Katherine A. Hubbard, Kristen N. Buck
Regeneration Of Macronutrients And Trace Metals During Phytoplankton Decay: An Experimental Study, Adrienne P. Hollister, Makenzie Kerr, Kema Malki, Eric Muhlbach, Maya Robert, Charles L. Tilney, Mya Breitbart, Katherine A. Hubbard, Kristen N. Buck
Marine Science Faculty Publications
Macronutrients and trace metals are incorporated into phytoplankton during growth and regenerated back into the water column when phytoplankton decay, a process that contributes to the distributions of dissolved trace metals and macronutrients in depth profiles. To study this, we incubated mixed Gulf of Mexico phytoplankton assemblages and monocultures of the diatom Pseudo-nitzschia dolorosa and the dinoflagellate Karenia brevis in the dark. Over 6 months, macronutrients (phosphate, silicic acid, nitrate + nitrite, nitrite, ammonium), chlorophyll-a, particulate organic carbon and nitrogen, and prokaryotes were monitored alongside dissolved manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), cadmium (Cd), …
Dna Barcoding Of Fish Eggs Collected Off Northwestern Cuba And Across The Florida Straits Demonstrates Egg Transport By Mesoscale Eddies, Makenzie Kerr, Jeremy Browning, Eva‐Maria Bønnelycke, Yingjun Zhang, Chuanmin Hu, Maickel Armenteros, Steven Murawski, Ernst B. Peebles, Mya Breitbart
Dna Barcoding Of Fish Eggs Collected Off Northwestern Cuba And Across The Florida Straits Demonstrates Egg Transport By Mesoscale Eddies, Makenzie Kerr, Jeremy Browning, Eva‐Maria Bønnelycke, Yingjun Zhang, Chuanmin Hu, Maickel Armenteros, Steven Murawski, Ernst B. Peebles, Mya Breitbart
Marine Science Faculty Publications
Identifying spawning sites for broadcast spawning fish species is a key element of delineating critical habitat for managing and regulating marine fisheries. Genetic barcoding has enabled accurate taxonomic identification of individual fish eggs, overcoming limitations of morphological classification techniques. In this study, planktonic fish eggs were collected at 23 stations along the northwestern coast of Cuba and across the Florida Straits to United States waters. A total of 564 fish eggs were successfully identified to 89 taxa within 30 families, with the majority of taxa being resolved to species. We provide new spawning information for Luvarus imperialis (Louvar), Bothus lunatus …
In Situ Measurements Of Circulation Features Influencing Cross-Shelf Transport Around Northwest Cuba, Matthieu Le Hénaff, Vassiliki H. Kourafalou, Yannis Androulidakis, Ryan H. Smith, Heesook Kang, Chuanmin Hu, John T. Lamkin
In Situ Measurements Of Circulation Features Influencing Cross-Shelf Transport Around Northwest Cuba, Matthieu Le Hénaff, Vassiliki H. Kourafalou, Yannis Androulidakis, Ryan H. Smith, Heesook Kang, Chuanmin Hu, John T. Lamkin
Marine Science Faculty Publications
We analyzed circulation processes sampled in the Gulf of Mexico in May 2016 by the National Oceanic and Atmospheric Administration (NOAA) Ship Nancy Foster. This data set is one of the first in situ surveys in Cuban waters available to the international community. Along northwest Cuba, these data suggested coastal upwelling and revealed, for the first time, a ~50 km diameter Cuban ANticyclonic (CubAN) eddy and a ~25 km diameter cyclonic eddy, which together advected upwelled waters offshore. The CubAN eddy was associated with downwelling, and the cyclonic eddy with upwelling. At the western tip of Cuba, local currents …
Photic Stress On Coral Reefs In The Maldives: The Amphistegina Bleaching Index, Stephanie Stainbank, Silvia Spezzaferri, Valentina Beccari, Pamela Hallock, Arthur Adams, Auriele Angeloz, Daniela Basso, Annalisa Caragnano, Nicolo Del Piero, Patrick Dietsche
Photic Stress On Coral Reefs In The Maldives: The Amphistegina Bleaching Index, Stephanie Stainbank, Silvia Spezzaferri, Valentina Beccari, Pamela Hallock, Arthur Adams, Auriele Angeloz, Daniela Basso, Annalisa Caragnano, Nicolo Del Piero, Patrick Dietsche
Marine Science Faculty Publications
The Amphistegina Bleaching Index (ABI) was applied to three Maldivian reefs in the Rasdhoo and North Ari Atolls in 2018, during normal sea surface temperature conditions. This dataset was then compared with a 2015, pre-coral bleaching study. The results provide a context for the verification and application of the ABI in outlining the photo-inhibitory stress status of coral reefs outside of the Florida Reef Tract where it was originally developed. The sampling periods encompass different seasons and temperature regimes. The 2015 field sampling preceeded the El Niño induced, mass coral-bleaching events of 2015 and 2016. It was carried out in …
Responses Of Reef Bioindicators To Recent Temperature Anomalies In Distinct Areas Of The North Ari And Rasdhoo Atolls (Maldives), V. Beccari, S. Spezzaferri, S. Stainbank, Pamela Hallock, D. Basso, A. Caragnano, C. Pisapia, A. Adams, A. Angeloz, N. Del Piero
Responses Of Reef Bioindicators To Recent Temperature Anomalies In Distinct Areas Of The North Ari And Rasdhoo Atolls (Maldives), V. Beccari, S. Spezzaferri, S. Stainbank, Pamela Hallock, D. Basso, A. Caragnano, C. Pisapia, A. Adams, A. Angeloz, N. Del Piero
Marine Science Faculty Publications
Assessments of reef sediments in the North Ari Atoll (Maldives) were conducted in 2015 and 2018 on reefs of three islands with different management strategies: community, resort, and uninhabited. Indices applied were the Foraminifera in Reef Assessment and Monitoring Index (FI) and the Sediment Constituents Index (SI). Both indices are based on shells or fragments of functional groups, which for the FI are foraminiferal shells and for the SI are sediment components. The FI is considered to be an indicator of water quality and the SI an indicator of water quality, community structure, and processes such as grazing and bioerosion. …
Multi-Sensor Observations Of Submesoscale Eddies In Coastal Regions, Gang Li, Yijun He, Guoqiang Liu, Yingjun Zhang, Chuanmin Hu, William Perrie
Multi-Sensor Observations Of Submesoscale Eddies In Coastal Regions, Gang Li, Yijun He, Guoqiang Liu, Yingjun Zhang, Chuanmin Hu, William Perrie
Marine Science Faculty Publications
The temporal and spatial variation in submesoscale eddies in the coastal region of Lianyungang (China) is studied over a period of nearly two years with high-resolution (0.03◦ , about 3 km) observations of surface currents derived from high-frequency coastal radars (HFRs). The centers and boundaries of submesoscale eddies are identified based on a vector geometry (VG) method. A color index (CI) representing MODIS ocean color patterns with a resolution of 500 m is used to compute CI gradient parameters, from which submesoscale features are extracted using a modified eddy-extraction approach. The results show that surface currents derived from HFRs and …
Mg/Ca-Temperature Calibration Of Polar Benthic Foraminifera Species For Reconstruction Of Bottom Water Temperatures On The Antarctic Shelf, Elaine M. Mawbey, Katharine R. Hendry, Mervyn J. Greaves, Claus-Dieter Hillenbrand, Gerhard Kuhn, Charlotte L. Spencer-Jones, Erin L. Mcclymont, Kara J. Vadman, Amelia E. Shevenell, Patrycja E. Jernas, James A. Smith
Mg/Ca-Temperature Calibration Of Polar Benthic Foraminifera Species For Reconstruction Of Bottom Water Temperatures On The Antarctic Shelf, Elaine M. Mawbey, Katharine R. Hendry, Mervyn J. Greaves, Claus-Dieter Hillenbrand, Gerhard Kuhn, Charlotte L. Spencer-Jones, Erin L. Mcclymont, Kara J. Vadman, Amelia E. Shevenell, Patrycja E. Jernas, James A. Smith
Marine Science Faculty Publications
Benthic foraminifera Mg/Ca is a well-established bottom water temperature (BWT) proxy used in paleoclimate studies. The relationship between Mg/Ca and BWT for numerous species has been determined using core-top and culturing studies. However, the scarcity of calcareous microfossils in Antarctic shelf sediments and poorly defined calibrations at low temperatures has limited the use of the foraminiferal Mg/Ca paleothermometer in ice proximal Antarctic sediments. Here we present paired ocean temperature and modern benthic foraminifera Mg/Ca data for three species, Trifarina angulosa, Bulimina aculeata, and Globocassidulina subglobosa, but with a particular focus on Trifarina angulosa. The core-top data from several …
Mapping Hurricane Damage: A Comparative Analysis Of Satellite Monitoring Methods, Matthew J. Mccarthy, Brita Jessen, Michael J. Barry, Marissa Figueroa, Jessica Mcintosh, Tylar Murray, Jill Schmid, Frank E. Muller-Karger
Mapping Hurricane Damage: A Comparative Analysis Of Satellite Monitoring Methods, Matthew J. Mccarthy, Brita Jessen, Michael J. Barry, Marissa Figueroa, Jessica Mcintosh, Tylar Murray, Jill Schmid, Frank E. Muller-Karger
Marine Science Faculty Publications
Wetlands are the second-most valuable natural resource on Earth but have declined by approximately 70 % since 1900. Restoration and conservation efforts have succeeded in some areas through establishment of refuges where anthropogenic impacts are minimized. However, these areas are still prone to wetland damage caused by natural disasters. Severe storms such as Hurricane Irma, which made landfall as a Category 3 hurricane in southwest Florida (USA) on September 11, 2017, can cause the destruction of mangroves and other wetland habitat. Multispectral images from commercial satellites provide a means to assess the extent of the damage to different wetland habitat …
Revealing The Intensity Of Turbulent Energy Transfer In Planetary Atmospheres, Simon Cabanes, Stefania Espa, Boris Galperin, Roland M. Young, Peter L. Read
Revealing The Intensity Of Turbulent Energy Transfer In Planetary Atmospheres, Simon Cabanes, Stefania Espa, Boris Galperin, Roland M. Young, Peter L. Read
Marine Science Faculty Publications
Images of the giant planets Jupiter and Saturn show highly turbulent storms and swirling clouds that reflect the intensity of turbulence in their atmospheres. Quantifying planetary turbulence is inaccessible to conventional tools, however, since they require large quantities of spatially and temporally resolved data. Here we show, using experiments, observations, and simulations, that potential vorticity (PV) is a straightforward and universal diagnostic that can be used to estimate turbulent energy transfer in a stably stratified atmosphere. We use the conservation of PV to define a length scale, LM, representing a typical distance over which PV is mixed by planetary turbulence. …
Eddy–Wave Duality In A Rotating Flow, Stefania Espa, Simon Cabanes, Gregory P. King, Gabriella Nitto, Boris Galperin
Eddy–Wave Duality In A Rotating Flow, Stefania Espa, Simon Cabanes, Gregory P. King, Gabriella Nitto, Boris Galperin
Marine Science Faculty Publications
A series of experiments with rotating, electromagnetically forced, turbulent flows were carried out at the Sapienza University of Rome to investigate the eddy–wave duality in flows with a β-effect and the electromagnetic force acting in the westward direction. When the β-effect is significant, i.e., as in planetary atmospheric and oceanic circulations, nonlinear eddy/wave interactions facilitate flow self-organization into zonal patterns in which Rossby waves and westward propagating cyclonic and anticyclonic eddies coexist. Upon time averaging, eddies disappear and the flow pattern transforms into a system of alternating zonal jets. What is the relationship between eddies, jets, and Rossby …
Increasing Rates Of Carbon Burial In Southwest Florida Coastal Wetlands, Joshua L. Breithaupt, Joseph M. Smoak, Thomas S. Bianchi, Derrick R. Vaughn, Christian J. Sanders, Kara R. Radabaugh, Michael J. Osland, Laura C. Feher, James C. Lynch, Donald R. Cahoon, Gordon H. Anderson, Kevin R.T. Whelan, Brad E. Rosenheim, Ryan P. Moyer, Lisa G. Chambers
Increasing Rates Of Carbon Burial In Southwest Florida Coastal Wetlands, Joshua L. Breithaupt, Joseph M. Smoak, Thomas S. Bianchi, Derrick R. Vaughn, Christian J. Sanders, Kara R. Radabaugh, Michael J. Osland, Laura C. Feher, James C. Lynch, Donald R. Cahoon, Gordon H. Anderson, Kevin R.T. Whelan, Brad E. Rosenheim, Ryan P. Moyer, Lisa G. Chambers
Marine Science Faculty Publications
Rates of organic carbon (OC) burial in some coastal wetlands appear to be greater in recent years than they were in the past. Possible explanations include ongoing mineralization of older OC or the influence of an unaccounted-for artifact of the methods used to measure burial rates. Alternatively, the trend may represent real acceleration in OC burial. We quantified OC burial rates of mangrove and coastal freshwater marshes in southwest Florida through a comparison of rates derived from 210Pb, 137Cs, and surface marker horizons. Age/depth profiles of lignin: OC were used to assess whether down-core remineralization had depleted the …
Ocean Deoxygenation And Copepods: Coping With Oxygen Minimum Zone Variability, Karen F. Wishner, Brad Seibel, Dawn Outram
Ocean Deoxygenation And Copepods: Coping With Oxygen Minimum Zone Variability, Karen F. Wishner, Brad Seibel, Dawn Outram
Marine Science Faculty Publications
Increasing deoxygenation (loss of oxygen) of the ocean, including expansion of oxygen minimum zones (OMZs), is a potentially important consequence of global warming. We examined present-day variability of vertical distributions of 23 calanoid copepod species in the Eastern Tropical North Pacific (ETNP) living in locations with different water column oxygen profiles and OMZ intensity (lowest oxygen concentration and its vertical extent in a profile). Copepods and hydrographic data were collected in vertically stratified day and night MOCNESS (Multiple Opening/Closing Net and Environmental Sensing System) tows (0–1000 m) during four cruises over a decade (2007–2017) that sampled four ETNP locations: Costa …
West Florida Shelf Pipeline Serves As Sea Turtle Benthic Habitat Based On In Situ Towed Camera Observations, Heather A. Broadbent, Sarah E. Grasty, Robert F. Hardy, Margaret M. Lamont, Kristen M. Hart, Chad Lembke, Jennifer L. Brizzolara, Steven Murawski
West Florida Shelf Pipeline Serves As Sea Turtle Benthic Habitat Based On In Situ Towed Camera Observations, Heather A. Broadbent, Sarah E. Grasty, Robert F. Hardy, Margaret M. Lamont, Kristen M. Hart, Chad Lembke, Jennifer L. Brizzolara, Steven Murawski
Marine Science Faculty Publications
The use of marine offshore benthic habitats by sea turtles is poorly characterized due to the difficulty of obtaining in situ data. Understanding benthic habitat use that is important to the species’ reproduction, foraging, and migrations is critical for guiding management decisions. A towed camera-based assessment survey system (C-BASS) equipped with environmental sensors was used to characterize and assess benthic habitats on the West Florida Shelf (WFS) from 2014 to 2018. During these cruises, sea turtles were opportunistically observed during the surveys, and critical in situ data such as spatiotemporal information, species identification, habitat use, behavior, and environmental data were …
Geospatial Simulations Of Airborne Ice-Penetrating Radar Surveying Reveal Elevation Under-Measurement Bias For Ice-Sheet Bed Topography, Oliver T. Bartlett, Steven J. Palmer, Dustin M. Schroeder, Emma J. Mackie, Timothy T. Barrows, Alastair G. Graham
Geospatial Simulations Of Airborne Ice-Penetrating Radar Surveying Reveal Elevation Under-Measurement Bias For Ice-Sheet Bed Topography, Oliver T. Bartlett, Steven J. Palmer, Dustin M. Schroeder, Emma J. Mackie, Timothy T. Barrows, Alastair G. Graham
Marine Science Faculty Publications
Airborne radio-echo sounding (RES) surveys are widely used to measure ice-sheet bed topography. Measuring bed topography as accurately and widely as possible is of critical importance to modelling ice dynamics and hence to constraining better future ice response to climate change. Measurement accuracy of RES surveys is influenced both by the geometry of bed topography and the survey design. Here we develop a novel approach for simulating RES surveys over glaciated terrain, to quantify the sensitivity of derived bed elevation to topographic geometry. Furthermore, we investigate how measurement errors influence the quantification of glacial valley geometry. We find a negative …
A Revised Diet Matrix To Improve The Parameterization Of A West Florida Shelf Ecopath Model For Understanding Harmful Algal Bloom Impacts, Holly A. Perryman, Joseph H. Tarnecki, Arnaud Grüss, Elizabeth A. Babcock, Skyler R. Sagarese, Cameron H. Ainsworth, Alisha M. Gray Dileone
A Revised Diet Matrix To Improve The Parameterization Of A West Florida Shelf Ecopath Model For Understanding Harmful Algal Bloom Impacts, Holly A. Perryman, Joseph H. Tarnecki, Arnaud Grüss, Elizabeth A. Babcock, Skyler R. Sagarese, Cameron H. Ainsworth, Alisha M. Gray Dileone
Marine Science Faculty Publications
Harmful algal blooms (HABs) are a growing concern in the West Florida Shelf (WFS) region. An Ecopath with Ecosim (EwE) model of the WFS explicitly simulating HABs was previously developed to illuminate the potential impacts of blooms of the dinoflagellate Karenia brevis (colloquially referred to as “red tides”) on the WFS ecosystem. However, the diet matrix of the Ecopath component of this EwE model (referred to as “WFS-HAB Ecopath”) was based largely on sparse, cursory information and not on local survey data. Here, we revise the diet matrix of the WFS-HAB Ecopath model using predictions of a robust statistical model …
Stakeholder Participation In Ipbes: Connecting Local Environmental Work With Global Decision Making, Cornelia B. Krug, Eleanor Sterling, Timothy Cadman, Jonas Geschke, Paula F. Drummond De Castro, Rainer Schliep, Isimemen Osemwegie, Frank E. Muller-Karger, Tek Maraseni
Stakeholder Participation In Ipbes: Connecting Local Environmental Work With Global Decision Making, Cornelia B. Krug, Eleanor Sterling, Timothy Cadman, Jonas Geschke, Paula F. Drummond De Castro, Rainer Schliep, Isimemen Osemwegie, Frank E. Muller-Karger, Tek Maraseni
Marine Science Faculty Publications
The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services(IPBES) strengthens the science-policy interface by producing scientific assessments on biodiversity and ecosystem services to inform policy. IPBES fosters knowledge exchange across disciplines, between researchers and other knowledge holders, practitioners, societal actors and decision makers working at different geographic scales. A number of avenues for participation of stakeholders across the four functions if IPBES exist. Stakeholders come from diverse backgrounds, including Indigenous Peoples and local communities, businesses, and non-governmental organization. They represent multiple sources of information, data, knowledge, and perspectives on biodiversity. Stakeholder engagement in IPBES seeks to 1. communicate, disseminate, and …
Environmental Dna Reveals Seasonal Shifts And Potential Interactions In A Marine Community, Anni Djurhuus, Collin J. Closek, Ryan P. Kelly, Kathleen J. Pitz, Reiko P. Michisaki, Hilary A. Starks, Kristine R. Walz, Elizabeth A. Andruszkiewicz, Emily Olesin, Katherine Hubbard, Enrique Montes, Daniel Otis, Frank E. Muller-Karger, Francisco P. Chavez, Alexandria B. Boehm, Mya Breitbart
Environmental Dna Reveals Seasonal Shifts And Potential Interactions In A Marine Community, Anni Djurhuus, Collin J. Closek, Ryan P. Kelly, Kathleen J. Pitz, Reiko P. Michisaki, Hilary A. Starks, Kristine R. Walz, Elizabeth A. Andruszkiewicz, Emily Olesin, Katherine Hubbard, Enrique Montes, Daniel Otis, Frank E. Muller-Karger, Francisco P. Chavez, Alexandria B. Boehm, Mya Breitbart
Marine Science Faculty Publications
Environmental DNA (eDNA) analysis allows the simultaneous examination of organisms across multiple trophic levels and domains of life, providing critical information about the complex biotic interactions related to ecosystem change. Here we used multilocus amplicon sequencing of eDNA to survey biodiversity from an eighteen-month (2015–2016) time-series of seawater samples from Monterey Bay, California. The resulting dataset encompasses 663 taxonomic groups (at Family or higher taxonomic rank) ranging from microorganisms to mammals. We inferred changes in the composition of communities, revealing putative interactions among taxa and identifying correlations between these communities and environmental properties over time. Community network analysis provided evidence …
Insights Into The Bioavailability Of Oceanic Dissolved Fe From Phytoplankton Uptake Kinetics, Yeala Shaked, Kristen N. Buck, Travis Mellett, Maria. T. Maldonado
Insights Into The Bioavailability Of Oceanic Dissolved Fe From Phytoplankton Uptake Kinetics, Yeala Shaked, Kristen N. Buck, Travis Mellett, Maria. T. Maldonado
Marine Science Faculty Publications
Phytoplankton growth in large parts of the world ocean is limited by low availability of dissolved iron (dFe), restricting oceanic uptake of atmospheric CO2. The bioavailability of dFe in seawater is however difficult to appraise since it is bound by a variety of poorly characterized organic ligands. Here, we propose a new approach for evaluating seawater dFe bioavailability based on its uptake rate constant by Fe-limited cultured phytoplankton. We utilized seven phytoplankton species of diverse classes, sizes, and provenances to probe for dFe bioavailability in 12 seawater samples from several ocean basins and depths. All tested phytoplankton acquired …
Understanding Of Contemporary Regional Sea-Level Change And The Implications For The Future, Benjamin D. Hamlington, Alex S. Gardner, Erik Ivins, Jan T. Lenaerts, J. T. Reager, David S. Trossman, Edward D. Zaron, Surendra Adhikari, Anthony Arendt, Andy Aschwanden, Brian D. Beckley, David P. Bekaert, Geoffrey Blewitt, Lambert Caron, Don P. Chambers, Hrishikesh A. Chandanpurkar, Knut Christianson, Beata Csatho, Richard I. Cullather, Robert M. Deconto, John T. Fasullo, Thomas Frederikse, Jeffrey T. Freymueller, Daniel M. Gilford, Manuela Girotto, William C. Hammond, Regine Hock, Nicholas Holschuh, Robert E. Kopp, Felix Landerer, Eric Larour, Dimitris Menemenlis, Mark Merrifield, Jerry X. Mitrovica, R. Steven Nerem, Isabel J. Nias, Veronica Nieves, Sophie Nowicki, Kishore Pangaluru, Christopher G. Piecuch, Richard D. Ray, David R. Rounce, Nicole-Jeanne Schlegel, Hélène Seroussi, Manoochehr Shirzaei, William V. Sweet, Isabella Velicogna, Nadya Vinogradova, Thomas Wahl, David N. Wiese, Michael J. Willis
Understanding Of Contemporary Regional Sea-Level Change And The Implications For The Future, Benjamin D. Hamlington, Alex S. Gardner, Erik Ivins, Jan T. Lenaerts, J. T. Reager, David S. Trossman, Edward D. Zaron, Surendra Adhikari, Anthony Arendt, Andy Aschwanden, Brian D. Beckley, David P. Bekaert, Geoffrey Blewitt, Lambert Caron, Don P. Chambers, Hrishikesh A. Chandanpurkar, Knut Christianson, Beata Csatho, Richard I. Cullather, Robert M. Deconto, John T. Fasullo, Thomas Frederikse, Jeffrey T. Freymueller, Daniel M. Gilford, Manuela Girotto, William C. Hammond, Regine Hock, Nicholas Holschuh, Robert E. Kopp, Felix Landerer, Eric Larour, Dimitris Menemenlis, Mark Merrifield, Jerry X. Mitrovica, R. Steven Nerem, Isabel J. Nias, Veronica Nieves, Sophie Nowicki, Kishore Pangaluru, Christopher G. Piecuch, Richard D. Ray, David R. Rounce, Nicole-Jeanne Schlegel, Hélène Seroussi, Manoochehr Shirzaei, William V. Sweet, Isabella Velicogna, Nadya Vinogradova, Thomas Wahl, David N. Wiese, Michael J. Willis
Marine Science Faculty Publications
Global sea level provides an important indicator of the state of the warming climate, but changes in regional sea level are most relevant for coastal communities around the world. With improvements to the sea-level observing system, the knowledge of regional sea-level change has advanced dramatically in recent years. Satellite measurements coupled with in situ observations have allowed for comprehensive study and improved understanding of the diverse set of drivers that lead to variations in sea level in space and time. Despite the advances, gaps in the understanding of contemporary sea-level change remain and inhibit the ability to predict how the …
Altered Tropical Seascapes Influence Patterns Of Fish Assemblage And Ecological Functions In The Western Indian Ocean, D. H. Chacin, C. D. Stallings, M. Eggertsen, C. Åkerlund, C. Halling, C. Berkström
Altered Tropical Seascapes Influence Patterns Of Fish Assemblage And Ecological Functions In The Western Indian Ocean, D. H. Chacin, C. D. Stallings, M. Eggertsen, C. Åkerlund, C. Halling, C. Berkström
Marine Science Faculty Publications
The arrangement and composition of habitats within landscapes and fine-scale habitat characteristics influence community structure and ecological processes. These aspects can be altered by anthropogenic activities, thus influencing associated assemblages. Farming of macroalgae is a common practice in tropical settings and alters the natural composition of seascapes by introducing monoculture patches. The farmed macroalgae may also differ in palatability compared to naturally-occurring macroalgae, influencing herbivory. This study assessed how these farms may differ from natural macroalgal beds in terms of habitat heterogeneity, fish assemblages, and herbivory. We surveyed fish assemblages and deployed macroalgal assays within macroalgal beds, farms and at …
Climate-Driven Aerobic Habitat Loss In The California Current System, Evan M. Howard, Justin L. Penn, Hartmut Frenzel, Brad A. Seibel, Daniele Bianchi, Lionel Renault, Fayçal Kessouri, Martha A. Sutula, James C. Mcwilliams, Curtis Deutsch
Climate-Driven Aerobic Habitat Loss In The California Current System, Evan M. Howard, Justin L. Penn, Hartmut Frenzel, Brad A. Seibel, Daniele Bianchi, Lionel Renault, Fayçal Kessouri, Martha A. Sutula, James C. Mcwilliams, Curtis Deutsch
Marine Science Faculty Publications
Climate warming is expected to intensify hypoxia in the California Current System (CCS), threatening its diverse and productive marine ecosystem. We analyzed past regional variability and future changes in the Metabolic Index (Φ), a species-specific measure of the environment’s capacity to meet temperature-dependent organismal oxygen demand. Across the traits of diverse animals, Φ exhibits strong seasonal to interdecadal variations throughout the CCS, implying that resident species already experience large fluctuations in available aerobic habitat. For a key CCS species, northern anchovy, the long-term biogeographic distribution and decadal fluctuations in abundance are both highly coherent with aerobic habitat volume. Ocean warming …
Observations Of Water Transparency In China’S Lakes From Space, Dong Liu, Hongtao Duan, Steven Loiselle, Chuanmin Hu, Guoqing Zhang, Junli Li, Hong Yang, Julian R. Thompson, Zhigang Cao, Ming Shen, Ronghua Ma, Min Zhang, Weixiao Han
Observations Of Water Transparency In China’S Lakes From Space, Dong Liu, Hongtao Duan, Steven Loiselle, Chuanmin Hu, Guoqing Zhang, Junli Li, Hong Yang, Julian R. Thompson, Zhigang Cao, Ming Shen, Ronghua Ma, Min Zhang, Weixiao Han
Marine Science Faculty Publications
Water transparency, usually denoted by Secchi disk depth (SSD), represents the first-order description of water quality and has important implications for the diversity and productivity of aquatic life. In China, lakes supply freshwater and ecosystem services to nearly a billion people. Therefore, real time monitoring of lake transparency is of great significance. Moreover, understanding how and why transparency varies in space and time in response to different driving forces is needed to understand, manage, and predict lake water quality. Based on the time-saving and low-cost Google Earth Engine cloud platform, this study developed a new algorithm for quickly mapping SDDs …
Mapping Benthic Habitat On The West Florida Shelf Using Multibeam Acoustics And Towed Underwater Video To Improve Fisheries Science And Management, Alexander Ilich, Jennifer Brizzolara, Sarah Grasty, John Gray, Matthew Hommeyer, Chad Lembke, Stanley Locker, Alex Silverman, Theodore Switzer, Abigail Vivlamore, Steven Murawski
Mapping Benthic Habitat On The West Florida Shelf Using Multibeam Acoustics And Towed Underwater Video To Improve Fisheries Science And Management, Alexander Ilich, Jennifer Brizzolara, Sarah Grasty, John Gray, Matthew Hommeyer, Chad Lembke, Stanley Locker, Alex Silverman, Theodore Switzer, Abigail Vivlamore, Steven Murawski
Marine Science Faculty Publications
The West Florida Shelf (WFS) is an extremely important area for both commercial and recreational fisheries. However, the lack of habitat maps in this area makes planning fisheries independent monitoring surveys difficult, and hinders the ability to manage and monitor fish stocks and ecosystems over time. As of 2015, only 5% of the WFS had been mapped in high resolution using a multibeam echosounder with little effort expended to infer and verify habitat type. In 2015, The Continental Shelf Characterization, Assessment, and Mapping Project (C-SCAMP) began using a multibeam echosounder and towed underwater video to map benthic habitats and improve …
New Gravity-Derived Bathymetry For The Thwaites, Crosson, And Dotson Ice Shelves Revealing Two Ice Shelf Populations, Tom A. Jordan, David Porter, Kirsty Tinto, Romain Millan, Atsuhiro Muto, Kelly Hogan, Robert D. Larter, Alastair G. Graham, John D. Paden
New Gravity-Derived Bathymetry For The Thwaites, Crosson, And Dotson Ice Shelves Revealing Two Ice Shelf Populations, Tom A. Jordan, David Porter, Kirsty Tinto, Romain Millan, Atsuhiro Muto, Kelly Hogan, Robert D. Larter, Alastair G. Graham, John D. Paden
Marine Science Faculty Publications
Ice shelves play a critical role in the long-term stability of ice sheets through their buttressing effect. The underlying bathymetry and cavity thickness are key inputs for modelling future ice sheet evolution. However, direct observation of sub-ice-shelf bathymetry is time-consuming, logistically risky, and in some areas simply not possible. Here we use new compilations of airborne and marine gravity, radar depth sounding, and swath bathymetry to provide new estimates of sub-ice-shelf bathymetry outboard of the rapidly changing West Antarctic Thwaites Glacier and beneath the adjacent Dotson and Crosson ice shelves. This region is of special interest, as the low-lying inland …
The Establishment Of A Pelagic Sargassum Population In The Tropical Atlantic: Biological Consequences Of A Basin-Scale Long Distance Dispersal Event, Elizabeth M. Johns, Rick Lumpkin, Nathan F. Putman, Ryan H. Smith, Frank E. Muller-Karger, Digna T. Rueda-Roa, Chuanmin Hu, Mengqiu Wang, Maureen T. Brooks, Lewis J. Gramer, Francisco E. Werner
The Establishment Of A Pelagic Sargassum Population In The Tropical Atlantic: Biological Consequences Of A Basin-Scale Long Distance Dispersal Event, Elizabeth M. Johns, Rick Lumpkin, Nathan F. Putman, Ryan H. Smith, Frank E. Muller-Karger, Digna T. Rueda-Roa, Chuanmin Hu, Mengqiu Wang, Maureen T. Brooks, Lewis J. Gramer, Francisco E. Werner
Marine Science Faculty Publications
Starting in 2011, coastal areas of the Caribbean Sea and tropical Atlantic Ocean began to experience extraordinary yearly accumulations of pelagic Sargassum brown alga. Historical reports place large quantities of Sargassum only in the North Atlantic (mostly in the Gulf of Mexico and the Sargasso Sea). Accumulations of Sargassum in the tropical Atlantic have continued. We used a numerical particle-tracking system, wind and current reanalysis data, drifting buoy trajectories, and satellite imagery to determine the origin of the Sargassum that is now found persistently in the tropical Atlantic. Our analyses suggest that during the extreme negative phase of the winter …
Revealing The Former Bed Of Thwaites Glacier Using Sea-Floor Bathymetry: Implications For Warm-Water Routing And Bed Controls On Ice Flow And Buttressing, Kelly A. Hogan, Robert D. Larter, Alastair G. Graham, Robert Arthern, James D. Kirkham, Minzoni, Rebecca Totten Minzoni, Tom A. Jordan, Rachel Clark, Victoria Fitzgerald, Anna K. Wåhlin, John B. Anderson, Claus-Dieter Hillenbrand, Frank O. Nitsche, Lauren Simkins, James A. Smith, Karsten Gohl, Jan Erik Arndt, Jongkuk Hong, Julia Wellner
Revealing The Former Bed Of Thwaites Glacier Using Sea-Floor Bathymetry: Implications For Warm-Water Routing And Bed Controls On Ice Flow And Buttressing, Kelly A. Hogan, Robert D. Larter, Alastair G. Graham, Robert Arthern, James D. Kirkham, Minzoni, Rebecca Totten Minzoni, Tom A. Jordan, Rachel Clark, Victoria Fitzgerald, Anna K. Wåhlin, John B. Anderson, Claus-Dieter Hillenbrand, Frank O. Nitsche, Lauren Simkins, James A. Smith, Karsten Gohl, Jan Erik Arndt, Jongkuk Hong, Julia Wellner
Marine Science Faculty Publications
The geometry of the sea floor immediately beyond Antarctica’s marine-terminating glaciers is a fundamental control on warm-water routing, but it also describes former topographic pinning points that have been important for ice-shelf buttressing. Unfortunately, this information is often lacking due to the inaccessibility of these areas for survey, leading to modelled or interpolated bathymetries being used as boundary conditions in numerical modelling simulations. At Thwaites Glacier (TG) this critical data gap was addressed in 2019 during the first cruise of the International Thwaites Glacier Collaboration (ITGC) project. We present more than 2000 km2 of new multibeam echo-sounder (MBES) data acquired …
Cliff Feature Delineation Tool And Baseline Builder Tool, Version 1.0 User Guide, Alexander C. Seymour, Cheryl J. Hapke, Jonathan Warrick
Cliff Feature Delineation Tool And Baseline Builder Tool, Version 1.0 User Guide, Alexander C. Seymour, Cheryl J. Hapke, Jonathan Warrick
Marine Science Faculty Publications
Coastal cliffs constitute 80 percent of the world’s coastline, with seacliffs fronting a large proportion of the U.S. West Coast shoreline, particularly in California. Erosion of coastal cliffs can threaten infrastructure and human life, yet the spatial and temporal scope of cliff studies have been limited by cumbersome traditional methods that rely on the manual interpretation of seacliff features—especially seacliff toes and top edges. The Cliff Feature Delineation Tool (CFDT) and the Baseline Builder Tool are designed to increase the efficiency of deriving seacliff features from remote sensing datasets by utilizing an automated, quantitative approach that eliminates traditional interpretive methods …
Disturbances Drive Changes In Coral Community Assemblages And Coral Calcification Capacity, Travis A. Courtney, Brian B. Barnes, Iliana Chollett, Robin Elahi, Kevin Gross, James R. Guest, Ilsa B. Kuffner, Elizabeth A. Lenz, Hannah R. Nelson, Caroline S. Rogers, Lauren T. Toth, Andreas J. Andersson
Disturbances Drive Changes In Coral Community Assemblages And Coral Calcification Capacity, Travis A. Courtney, Brian B. Barnes, Iliana Chollett, Robin Elahi, Kevin Gross, James R. Guest, Ilsa B. Kuffner, Elizabeth A. Lenz, Hannah R. Nelson, Caroline S. Rogers, Lauren T. Toth, Andreas J. Andersson
Marine Science Faculty Publications
Anthropogenic environmental change has increased coral reef disturbance regimes in recent decades, altering the structure and function of many coral reefs globally. In this study, we used coral community survey data collected from 1996 to 2015 to evaluate reef-scale coral calcification capacity (CCC) dynamics with respect to recorded pulse disturbances for 121 reef sites in the Main Hawaiian Islands and Mo'orea (French Polynesia) in the Pacific and the Florida Keys Reef Tract and St. John (U.S. Virgin Islands) in the western Atlantic. CCC remained relatively high in the Main Hawaiian Islands in the absence of recorded widespread disturbances; declined and …
A Synthesis Of Deep Benthic Faunal Impacts And Resilience Following The Deepwater Horizon Oil Spill, Patrick T. Schwing, Paul A. Montagna, Samantha B. Joye, Claire B. Paris, Erik E. Cordes, Craig R. Mcclain, Joshua P. Kilborn, Steven A. Murawski
A Synthesis Of Deep Benthic Faunal Impacts And Resilience Following The Deepwater Horizon Oil Spill, Patrick T. Schwing, Paul A. Montagna, Samantha B. Joye, Claire B. Paris, Erik E. Cordes, Craig R. Mcclain, Joshua P. Kilborn, Steven A. Murawski
Marine Science Faculty Publications
The Deepwater Horizon (DWH) oil spill significantly impacted the northern Gulf of Mexico (nGoM) deep benthos (>125 m water depth) at different spatial scales and across all community size and taxa groups including microbes, foraminifera, meiofauna, macrofauna, megafauna, corals, and demersal fishes. The resilience across these communities was heterogeneous, with some requiring years if not decades to fully recover. To synthesize ecosystem impacts and recovery following DWH, the Gulf of Mexico Research Initiative (GOMRI) Core 3 synthesis group subdivided the nGoM into four ecotypes: coastal, continental shelf, open-ocean, and deep benthic. Here we present a synopsis of the deep …
Future Vision For Autonomous Ocean Observations, Christopher Whitt, Jay Pearlman, Brian Polagye, Frank Caimi, Frank Muller-Karger, Andrea Copping, Heather Spence, Shyam Madhusudhana, William Kirkwood, Ludovic Grosjean, Bilal Muhammad Fiaz, Satinder Singh, Sikandra Singh, Dana Manalang, Ananya Sen Gupta, Alain Maguer, Justin J. H. Buck, Andreas Marouchos, Malayath Aravindakshan Atmanand, Ramasamy Venkatesan, Vedachalam Narayanaswamy, Pierre Testor, Elizabeth Douglas, Sebastien De Halleux, Siri Jodha Khalsa
Future Vision For Autonomous Ocean Observations, Christopher Whitt, Jay Pearlman, Brian Polagye, Frank Caimi, Frank Muller-Karger, Andrea Copping, Heather Spence, Shyam Madhusudhana, William Kirkwood, Ludovic Grosjean, Bilal Muhammad Fiaz, Satinder Singh, Sikandra Singh, Dana Manalang, Ananya Sen Gupta, Alain Maguer, Justin J. H. Buck, Andreas Marouchos, Malayath Aravindakshan Atmanand, Ramasamy Venkatesan, Vedachalam Narayanaswamy, Pierre Testor, Elizabeth Douglas, Sebastien De Halleux, Siri Jodha Khalsa
Marine Science Faculty Publications
Autonomous platforms already make observations over a wide range of temporal and spatial scales, measuring salinity, temperature, nitrate, pressure, oxygen, biomass, and many other parameters. However, the observations are not comprehensive. Future autonomous systems need to be more affordable, more modular, more capable and easier to operate. Creative new types of platforms and new compact, low power, calibrated and stable sensors are under development to expand autonomous observations. Communications and recharging need bandwidth and power which can be supplied by standardized docking stations. In situ power generation will also extend endurance for many types of autonomous platforms, particularly autonomous surface …