Life Sciences Commons^™

Tracking The Hercules 265 Marine Gas Well Blowout In The Gulf Of Mexico, Isabel C. Romero, Tamay Özgökmen, Susan Snyder, Patrick Schwing, Bryan J. O'Malley, Francisco J. Beron‐Vera, Maria J. Olascoaga, Ping Zhu, Edward Ryan, Shuyi S. Chen, Dana L. Wetzel, David Hollander, Steven Murawski

Marine Science Faculty Publications

On 23 July 2013, a marine gas rig (Hercules 265) ignited in the northern Gulf of Mexico. The rig burned out of control for 2 days before being extinguished. We conducted a rapid‐response sampling campaign near Hercules 265 after the fire to ascertain if sediments and fishes were polluted above earlier baseline levels. A surface drifter study confirmed that surface ocean water flowed to the southeast of the Hercules site, while the atmospheric plume generated by the blowout was in eastward direction. Sediment cores were collected to the SE of the rig at a distance of ∼0.2, 8, …

Secchi Disk Depth: A New Theory And Mechanistic Model For Underwater Visibility, Zhongping Lee, Shaoling Shang, Chuanmin Hu, Keping Du, Alan Weidemann, Weilin Hou, Junfang Lin, Gong Lin

Marine Science Faculty Publications

Secchi disk depth (ZSD) is a measure of water transparency, whose interpretation has wide applications from diver visibility to studies of climate change. This transparency has been explained in the past 60 + years with the underwater visibility theory, the branch of the general visibility theory for visual ranging in water. However, through a thorough review of the physical processes involved in visual ranging in water, we show that this theory may not exactly represent the sighting of a Secchi disk by a human eye. Further, we update the Law of Contrast Reduction, a key concept in visibility …

Technology For Ocean Acidification Research: Needs And Availability, Todd R. Martz, Kendra L. Daly, Robert H. Byrne, Jonathan H. Stillman, Daniela Turk

Marine Science Faculty Publications

Diverse instruments, both custom built and commercially available, have been used to measure the properties of the aqueous CO₂ system in seawater at differing levels of autonomy (automated benchtop, continuous underway, autonomous in situ). In this review, we compare the capabilities of commercially available instruments with the needs of oceanographers in order to highlight major shortfalls in the state-of-the art instrumentation broadly available to the ocean acidification (OA) scientific community. In addition, we describe community surveys that identify needs for continued development and refinement of sensor and instrument technologies, expansion of programs that provide Certified Reference Materials, development of …

Southern Exposure: New Paleoclimate Insights From Southern Ocean And Antarctic Margin Sediments, Amelia E. Shevenell, Steven M. Bohaty

Marine Science Faculty Publications

Much of what is known about the evolution of Antarctica’s cryosphere in the geologic past is derived from ice-distal deep-sea sedimentary records. Recent advances in drilling technology and climate proxy methods have made it possible to retrieve and interpret high-quality ice-proximal sedimentary sequences from Antarctica’s margins and the Southern Ocean. These records contain a wealth of information about the individual histories of the East and West Antarctic Ice Sheets and associated temperature change in the circum-Antarctic seas. Emerging studies of Antarctic drill cores provide evidence of dynamic climate variability on both short and long timescales over the past 20 million …

Meta-Omic Signatures Of Microbial Metal And Nitrogen Cycling In Marine Oxygen Minimum Zones, Jennifer B. Glass, Cecilia B. Kretz, Sangita Ganesh, Piyush Ranjan, Sherry L. Seston, Kristen N. Buck, William M. Landing, Peter L. Morton, James W. Moffett, Stephen J. Giovannoni, Kevin L. Vergin, Frank J. Stewart

Marine Science Faculty Publications

Iron (Fe) and copper (Cu) are essential cofactors for microbial metalloenzymes, but little is known about the metalloenyzme inventory of anaerobic marine microbial communities despite their importance to the nitrogen cycle. We compared dissolved O₂, NO3−" role="presentation">−3, NO2−" role="presentation">−2, Fe and Cu concentrations with nucleic acid sequences encoding Fe and Cu-binding proteins in 21 metagenomes and 9 metatranscriptomes from Eastern Tropical North and South Pacific oxygen minimum zones and 7 metagenomes from the Bermuda Atlantic Time-series Station. Dissolved Fe concentrations increased sharply at upper oxic-anoxic transition zones, with the highest Fe:Cu molar ratio (1.8) occurring at …

World’S Largest Macroalgal Blooms Altered Phytoplankton Biomass In Summer In The Yellow Sea: Satellite Observations, Qianguo Xing, Chuanmin Hu, Danling Tang, Liqiao Tian, Shilin Tang, Xiao Hua Wang, Mingjing Lou, Xuelu Gao

Marine Science Faculty Publications

Since 2008, the world’s largest blooms of the green macroalgae, Ulva prolifera, have occurred every summer in the Yellow Sea, posing the question of whether these macroalgal blooms (MABs) have changed the phytoplankton biomass due to their perturbations of nutrient dynamics. We have attempted to address this question using long-term Moderate Resolution Imaging Spectroradiometer (MODIS) observations. A new MODIS monthly time-series of chlorophyll-a concentrations (Chl-a, an index of phytoplankton biomass) was generated after removing the macroalgae-contaminated pixels that were characterized by unexpectedly high values in the daily Chl-a products. Compared with Chl-a during July of 2002–2006 (the pre-MAB period), Chl-a …

Interpretation Of Complexometric Titration Data: An Intercomparison Of Methods For Estimating Models Of Trace Metal Complexation By Natural Organic Ligands, Ivanka Pižeta, Sylvia Sander, Robert Hudson, Dario Omanović, Oliver Baars, Katherine Barbeau, Kristen N. Buck, Randelle Bundy, Gonzalo Carrasco, Peter Croot, Cédric Garnier, Louise Gerringa, Martha Gledhill, Katsumi Hirose, Yoshiko Kondo, Luis Laglera, Jochen Nuester, Micha Rijkenberg, Shigenobu Takeda, Benjamin Twining, Mona C. Wells Mona C. Wells

Marine Science Faculty Publications

With the common goal of more accurately and consistently quantifying ambient concentrations of free metal ions and natural organic ligands in aquatic ecosystems, researchers from 15 laboratories that routinely analyze trace metal speciation participated in an intercomparison of statistical methods used to model their most common type of experimental dataset, the complexometric titration. All were asked to apply statistical techniques that they were familiar with to model synthetic titration data that are typical of those obtained by applying state-of-the-art electrochemical methods – anodic stripping voltammetry (ASV) and competitive ligand equilibration-adsorptive cathodic stripping voltammetry (CLE-ACSV) – to the analysis of natural …

Sedimentation Pulse In The Ne Gulf Of Mexico Following The 2010 Dwh Blowout, Gregg R. Brooks, Rebekka A. Larson, Patrick Schwing, Isabel C. Romero, Christopher Moore, Gert-Jan Reichart, Tom Jilbert, Jeff P. Chanton, David W. Hastings, Will A. Overholt, Kala P. Marks, Joel E. Kostka, Charles W. Holmes, David Hollander

Marine Science Faculty Publications

The objective of this study was to investigate the impacts of the Deepwater Horizon (DWH) oil discharge at the seafloor as recorded in bottom sediments of the DeSoto Canyon region in the northeastern Gulf of Mexico. Through a close coupling of sedimentological, geochemical, and biological approaches, multiple independent lines of evidence from 11 sites sampled in November/December 2010 revealed that the upper ~1 cm depth interval is distinct from underlying sediments and results indicate that particles originated at the sea surface. Consistent dissimilarities in grain size over the surficial ~1 cm of sediments correspond to excess ²³⁴Th depths, which …

Hydrocarbons In Deep-Sea Sediments Following The 2010 Deepwater Horizon Blowout In The Northeast Gulf Of Mexico, Isabel C. Romero, Patrick Schwing, Gregg R Brooks, Rebekka A Larson, David W. Hastings, Greg Ellis, Ethan Goddard, David Hollander

Marine Science Faculty Publications

The Deepwater Horizon (DWH) spill released 4.9 million barrels of oil into the Gulf of Mexico (GoM) over 87 days. Sediment and water sampling efforts were concentrated SW of the DWH and in coastal areas. Here we present geochemistry data from sediment cores collected in the aftermath of the DWH event from 1000-1500 m water depth in the DeSoto Canyon, NE of the DWH wellhead. Cores were analyzed at high-resolution (at 2 mm and 5 mm intervals) in order to evaluate the concentration, composition and input of hydrocarbons to the seafloor. Specifically, we analyzed total organic carbon (TOC), aliphatic, polycyclic …

Strategic Assessment Of Fisheries Independent Monitoring Programs In The Gulf Of Mexico, Paul Mark Suprenand, Michael Drexler, David L. Jones, Cameron H. Ainsworth

Marine Science Faculty Publications

This study evaluates information produced from 14 fisheries independent monitoring programs (FIM) in the Gulf of Mexico. We consider the uniqueness of information from each program and its usefulness in estimating fisheries management indices. Biomass values of 35 functional groups are extracted from an operating model (Ecospace) in such a way as to replicate the patterns of historic FIM samplings. Observation error is added to these data in order to create a set of pseudo data that replicates the type and quality of information obtained from FIM programs. The pseudo data then are put into a separate fishery assessment model …

A Decline In Benthic Foraminifera Following The Deepwater Horizon Event In The Northeastern Gulf Of Mexico, Patrick Schwing, Isabel C. Romero, Gregg R Brooks, David W Hastings, Rebekka A Larson, David Hollander

Marine Science Faculty Publications

Sediment cores were collected from three sites (1000-1200 m water depth) in the northeastern Gulf of Mexico from December 2010 to June 2011 to assess changes in benthic foraminiferal density related to the Deepwater Horizon (DWH) event (April-July 2010, 1500 m water depth). Short-lived radioisotope geochronologies (²¹⁰Pb, ²³⁴Th), organic geochemical assessments, and redox metal concentrations were determined to relate changes in sediment accumulation rate, contamination, and redox conditions with benthic foraminiferal density. Cores collected in December 2010 indicated a decline in density (80-93%). This decline was characterized by a decrease in benthic foraminiferal density and benthic foraminiferal accumulation rate (BFAR) …

Observations Of Hysteresis In The Annual Exchange Circulation Of A Large Microtidal Estuary, Steven D. Meyers, Monica Wilson, Mark E. Luther

Marine Science Faculty Publications

A nonlinear relation between the salinity field and the subtidal exchange circulation in the Tampa Bay estuary is demonstrated using observational data from 1999 to 2011. The data are averaged to form mean monthly climatological values of total freshwater discharge ( ), axial and vertical salinity gradients, and subtidal vertical shear. Well‐known steady state solutions indicate that the exchange circulation is linearly proportional to the horizontal salinity gradient, assuming a constant vertical eddy viscosity ( ). The exchange flow is found to be multivalued with respect to the horizontal salinity gradient, forming a hysteresis loop in parameter space that passes …

Development Of A Serological Assay For The Sea Lion (Zalophus Californianus) Anellovirus, Zcav, Elizabeth Fahsbender, Karyna Rosario, John Cannon, Frances Gulland, Larry Dishaw, Mya Breitbart

Marine Science Faculty Publications

New diseases in marine animals are emerging at an increasing rate, yet methodological limitations hinder characterization of viral infections. Viral metagenomics is an effective method for identifying novel viruses in diseased animals; however, determining virus pathogenesis remains a challenge. A novel anellovirus (Zalophus californianus anellovirus, ZcAV) was recently reported in the lungs of captive California sea lions involved in a mortality event. ZcAV was not detected by PCR in the blood of these animals, creating the inability to assess the prevalence of ZcAV in live sea lions. This study developed an enzyme-linked immunosorbent assay (ELISA) to detect antibodies to …

And On Top Of All That… Coping With Ocean Acidification In The Midst Of Many Stressors, Denise L. Breitburg, Joseph Salisbury, Joan M. Bernhard, Wei-Jun Cai, Sam Dupont, Scott C. Doney, Kristy J. Kroeker, Lisa A. Levin, W. Christopher Long, Lisa M. Milke, Seth H. Miller, Beth Phelan, Uta Passow, Brad A. Seibel, Anne E. Todgham, Ann M. Tarrant

Marine Science Faculty Publications

Oceanic and coastal waters are acidifying due to processes dominated in the open ocean by increasing atmospheric CO2 and dominated in estuaries and some coastal waters by nutrient-fueled respiration. The patterns and severity of acidification, as well as its effects, are modified by the host of stressors related to human activities that also influence these habitats. Temperature, deoxygenation, and changes in food webs are particularly important co-stressors because they are pervasive, and both their causes and effects are often mechanistically linked to acidification. Development of a theoretical underpinning to multiple stressor research that considers physiological, ecological, and evolutionary perspectives is …

Novel Circular Single-Stranded Dna Viruses Identified In Marine Invertebrates Reveal High Sequence Diversity And Consistent Predicted Intrinsic Disorder Patterns Within Putative Structural Proteins, Karyna Rosario, Ryan Schenck, Rachel Harbeitner, Stephanie Lawler, Mya Breitbart

Marine Science Faculty Publications

Viral metagenomics has recently revealed the ubiquitous and diverse nature of single-stranded DNA (ssDNA) viruses that encode a conserved replication initiator protein (Rep) in the marine environment. Although eukaryotic circular Rep-encoding ssDNA (CRESS-DNA) viruses were originally thought to only infect plants and vertebrates, recent studies have identified these viruses in a number of invertebrates. To further explore CRESS-DNA viruses in the marine environment, this study surveyed CRESS-DNA viruses in various marine invertebrate species. A total of 27 novel CRESS-DNA genomes, with Reps that share less than 60.1% identity with previously reported viruses, were recovered from 21 invertebrate species, mainly crustaceans. …

Multidimensional Metrics For Estimating Phage Abundance, Distribution, Gene Density, And Sequence Coverage In Metagenomes, Ramy Aziz, Bhakti Dwivedi, Sajia Akhter, Mya Breitbart, Robert Edwards

Marine Science Faculty Publications

No abstract provided.

Reduction Of Nutrients, Microbes, And Personal Care Products In Domestic Wastewater By A Benchtop Electrocoagulation Unit, E. Symonds, M. Cook, S. Mcquaig, R. Ulrich, R. Schenck, J. Lukasik, E. Van Vleet, Mya Breitbart

Marine Science Faculty Publications

To preserve environmental and human health, improved treatment processes are needed to reduce nutrients, microbes, and emerging chemical contaminants from domestic wastewater prior to discharge into the environment. Electrocoagulation (EC) treatment is increasingly used to treat industrial wastewater; however, this technology has not yet been thoroughly assessed for its potential to reduce concentrations of nutrients, a variety of microbial surrogates, and personal care products found in domestic wastewater. This investigation's objective was to determine the efficiency of a benchtop EC unit with aluminum sacrificial electrodes to reduce concentrations of the aforementioned biological and chemical pollutants from raw and tertiary-treated domestic …

Deep Sequencing Of The Viral Phoh Gene Reveals Temporal Variation, Depth-Specific Composition, And Persistent Dominance Of The Same Viral Phoh Genes In The Sargasso Sea, Dawn Goldsmith, Rachel Parsons, Damitu Beyene, Peter Salamon, Mya Breitbart

Marine Science Faculty Publications

Deep sequencing of the viral phoH gene, a host-derived auxiliary metabolic gene, was used to track viral diversity throughout the water column at the Bermuda Atlantic Time-series Study (BATS) site in the summer (September) and winter (March) of three years. Viral phoH sequences reveal differences in the viral communities throughout a depth profile and between seasons in the same year. Variation was also detected between the same seasons in subsequent years, though these differences were not as great as the summer/winter distinctions. Over 3,600 phoH operational taxonomic units (OTUs; 97% sequence identity) were identified. Despite high richness, most phoH sequences …

Potential Habitat Of Acropora Spp. On Reefs Of Florida, Puerto Rico, And The Us Virgin Islands, Katherine Wirt

Marine Science Faculty Publications

Elkhorn and staghorn corals (Acropora palmata, Acropora cervicornis) were listed in 2006 as threatened under the Endangered Species Act. The goal of this study was to create model potential-habitat maps for A. palmata and A. cervicornis, while identifying areas for possible re-establishment. These maps were created using a database of reported field observations in combination with existing benthic habitat maps. The mapped coral reef and hardbottom classifications throughout Florida, Puerto Rico, and the US Virgin Island reef tracts were used to generate potential-habitat polygons using buffers that incorporated 95% and 99% of reported observations of Acropora spp. …

Quantifying The Resolution Level Where The Grace Satellites Can Separate Greenland's Glacial Mass Balance From Surface Mass Balance, J. A. Bonin, D. P. Chambers

Marine Science Faculty Publications

Mass change over Greenland can be caused by either changes in the glacial dynamic mass balance (DMB) or the surface mass balance (SMB). The GRACE satellite gravity mission cannot directly separate the two physical causes because it measures the sum of the entire mass column with limited spatial resolution. We demonstrate one theoretical way to indirectly separate cumulative SMB from DMB with GRACE, using a least squares inversion technique with knowledge of the location of the glaciers. However, we find that the limited 60 × 60 spherical harmonic representation of current GRACE data does not provide sufficient resolution to adequately …

Using Ocean Bottom Pressure From The Gravity Recovery And Climate Experiment (Grace) To Estimate Transport Variability In The Southern Indian Ocean, Jessica K. Makowski, Don P. Chambers, Jennifer A. Bonin

Marine Science Faculty Publications

Previous studies have suggested that ocean bottom pressure (OBP) from the Gravity Recovery and Climate Experiment (GRACE) can be used to measure the depth-averaged, or barotropic, transport variability of the Antarctic Circumpolar Current (ACC). Here, we use GRACE OBP observations to calculate transport variability in a region of the southern Indian Ocean encompassing the major fronts of the ACC. We use a statistical analysis of a simulated GRACE-like data set to determine the uncertainty of the estimated transport for the 2003.0–2013.0 time period. We find that when the transport is averaged over 60° of longitude, the uncertainty (one standard error) …

Evaluation Of Empirical Mode Decomposition For Quantifying Multi-Decadal Variations And Acceleration In Sea Level Records, D. P. Chambers

Marine Science Faculty Publications

The ability of empirical mode decomposition (EMD) to extract multi-decadal variability from sea level records is tested using three simulations: one based on a series of purely sinusoidal modes, one based on scaled climate indices of El Niño and the Pacific decadal oscillation (PDO), and the final one including a single month with an extreme sea level event. All simulations include random noise of similar variance to high-frequency variability in the San Francisco tide gauge record. The intrinsic mode functions (IMFs) computed using EMD were compared to the prescribed oscillations. In all cases, the longest-period modes are significantly distorted, with …

Recent Trends In The Southern Ocean Eddy Field, Andrew Mcc. Hogg, Michael P. Meredith, Don P. Chambers, E. Povl Abrahamsen, Chris W. Hughes, Adele K. Morrison

Marine Science Faculty Publications

Eddies in the Southern Ocean act to moderate the response of the Antarctic Circumpolar Current (ACC) to changes in forcing. An updated analysis of the Southern Ocean satellite altimetry record indicates an increase in eddy kinetic energy (EKE) in recent decades, contemporaneous with a probable decrease in ACC transport. The EKE trend is largest in the Pacific (14.9 ± 4.1 cm² s⁻² per decade) and Indian (18.3 ± 5.1 cm² s⁻² per decade) sectors of the Southern Ocean. We test the hypothesis that variations in wind stress can account for the observed EKE trends using perturbation …

Evidence For Multidecadal Variability In Us Extreme Sea Level Records, Thomas Wahl, Don P. Chambers

Marine Science Faculty Publications

We analyze a set of 20 tide gauge records covering the contiguous United States (US) coastline and the period from 1929 to 2013 to identify long-term trends and multidecadal variations in extreme sea levels (ESLs) relative to changes in mean sea level (MSL). Different data sampling and analysis techniques are applied to test the robustness of the results against the selected methodology. Significant but small long-term trends in ESLs above/below MSL are found at individual sites along most coastline stretches, but are mostly confined to the southeast coast and the winter season when storm surges are primarily driven by extratropical …

Review Of Wave-Turbulence Interactions In The Stable Atmospheric Boundary Layer, Jielun Sun, Carmen J. Nappo, Larry Mahrt, Danijel Belušić, Branko Grisogono, David R. Stauffer, Manuel Pulido, Chantal Staquet, Qingfang Jiang, Annick Pouquet, Carlos Yagüe, Boris Galperin, Ronald B. Smith, John J. Finnigan, Shane D. Mayor, Gunilla Svensson, Andrey A. Grachev, William D. Neff

Marine Science Faculty Publications

Flow in a stably stratified environment is characterized by anisotropic and intermittent turbulence and wavelike motions of varying amplitudes and periods. Understanding turbulence intermittency and wave-turbulence interactions in a stably stratified flow remains a challenging issue in geosciences including planetary atmospheres and oceans. The stable atmospheric boundary layer (SABL) commonly occurs when the ground surface is cooled by longwave radiation emission such as at night over land surfaces, or even daytime over snow and ice surfaces, and when warm air is advected over cold surfaces. Intermittent turbulence intensification in the SABL impacts human activities and weather variability, yet it cannot …

Subannual Variability Of Total Alkalinity Distributions In The Northeastern Gulf Of Mexico, Bo Yang, Robert H. Byrne, Rik Wanninkhof

Marine Science Faculty Publications

The subannual variability of total alkalinity (TA) distributions in the northeastern Gulf of Mexico was examined through the use of TA data from ship-based water sampling, historical records of riverine TA, and contemporaneous model output of surface currents and salinity. TA variability was restricted to the upper 150 m of the water column, where relationships between salinity and TA were controlled primarily by subannual variations in the extent of mixing between seawater and river water. A transition in TA distribution patterns between the river-dominated northern margin (near the Mississippi-Atchafalaya River System) and the ocean current-dominated eastern margin (West Florida Shelf) …

Colored Dissolved Organic Matter In The Coastal Ocean: An Optical Tool For Coastal Zone Environmental Assessment And Management, Paula Coble, Chuanmin Hu, Richard W. Gould Jr., Grace Chang, A. Michelle Wood

Marine Science Faculty Publications

The phrase “deep blue sea” is so common in English usage that all three words are individually synonymous for “ocean.” Poems, song titles, and movies, have used these words to conjure up images that few people have observed firsthand. The real “deep blue sea” can typically be seen only hundreds of miles offshore. The areas of the ocean that most people are able to observe are coastal waters, which are rarely “deep,” and only in the cleanest, clearest regions of the world, such as along the coast of Australia, do these waters appear blue. Soil runoff from rivers, algal blooms, …

Long-Term Distribution Patterns Of Chlorophyll-A Concentration In China’S Largest Freshwater Lake: Meris Full-Resolution Observations With A Practical Approach, Lian Feng, Chuanmin Hu, Xingxing Han, Xiaoling Chen, Lin Qi

Marine Science Faculty Publications

A new empirical Chl-a algorithm has been developed and validated for the largest freshwater lake of China (Poyang Lake) using a normalized green-red difference index (NGRDI), where the uncertainty was estimated to be <45% for Chl-a ranging between 1.3 and 10.5 mg·m⁻³. The combined approach of using the NGRDI algorithm and atmospherically-corrected Medium Resolution Imaging Spectrometer (MERIS) data showed an advantage over other popular approaches. The algorithm was then applied to 325 carefully-selected MERIS full-resolution (300-m) scenes between 2003 and 2012, with pixels of extreme turbidity (NGRDI < 0.06, corresponding to >~25 mg·L⁻¹ total suspended sediments or TSS) masked. The long-term Chl-a distribution showed significant spatial gradient and temporal variability, …

A Harmful Algal Bloom Of Karenia Brevis In The Northeastern Gulf Of Mexico As Revealed By Modis And Viirs: A Comparison, Chuanmin Hu, Brian B. Barnes, Lin Qi, Alina A. Corcoran

Marine Science Faculty Publications

The most recent Visible Infrared Imager Radiometer Suite (VIIRS) is not equipped with a spectral band to detect solar-stimulated phytoplankton fluorescence. The lack of such a band may affect the ability of VIIRS to detect and quantify harmful algal blooms (HABs) in coastal waters rich in colored dissolved organic matter (CDOM) because of the overlap of CDOM and chlorophyll absorption within the blue-green spectrum. A recent HAB dominated by the toxin-producing dinoflagellate Karenia brevis in the northeastern Gulf of Mexico, offshore of Florida’s Big Bend region, allowed for comparison of the capacities of VIIRS and Moderate Resolution Imaging Spectroradiometer (MODIS) …

Solutions For Recovering And Sustaining The Bounty Of The Ocean: Combining Fishery Reforms, Rights-Based Fisheries Management, And Marine Reserves, Allison K. Barner, Jane Lubchenco, Christopher Costello, Steven D. Gaines, Amanda Leland, Brett Jenks, Steven Murawski, Eric Schwaab, Margaret Spring

Marine Science Faculty Publications

This manuscript is based on a keynote lecture given by Jane Lubchenco at One Planet, One Ocean: The 2nd International Ocean Research Conference, Barcelona, Spain, November 17–21, 2014.

Food security, economic opportunities, and other benefits provided by a healthy ocean are in jeopardy because of years of overexploitation of many fisheries, and the challenges will intensify in many locales as climate and the environment continue to change. The good news is that solutions are gaining traction. Mandates to end overfishing that use scientifically determined catch limits and rights-based approaches to fishery management have produced impressive results in ending overfishing and …