Gulf of Mexico

Publications

Filter Total Items: 123
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Year Published: 2020

Development of a modeling framework for predicting decadal barrier island evolution

Predicting the decadal evolution of barrier island systems is important for coastal managers who propose restoration or preservation alternatives aimed at increasing the resiliency of the island and its associated habitats or communities. Existing numerical models for simulating morphologic changes typically include either long-term (for example,...

Mickey, Rangley C.; Long, Joseph W.; Dalyander, P. Soupy ; Jenkins, Robert L.; Thompson, David M.; Passeri, Davina L.; Plant, Nathaniel G.
Mickey, R.C., Long, J.W., Dalyander, P.S., Jenkins, R.L., III, Thompson, D.M., Passeri, D.L., and Plant, N.G., 2019, Development of a modeling framework for predicting decadal barrier island evolution: U.S. Geological Survey Open-File Report 2019–1139, 46 p., https://doi.org/10.3133/ofr20191139.

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Year Published: 2019

Prediction and inference of flow-duration curves using multi-output neural networks

We develop multi-output neural network models (MNNs) to predict flow-duration curves (FDCs) in 9,203 ungaged locations in the Southeastern United States for six decades between 1950-2009. The model architecture contains multiple response variables in the output layer that correspond to individual quantiles along the FDC. During training,...

Worland, Scott C.; Steinschneider, Scott; Asquith, William H.; Knight, Rodney; Wieczorek, Michael E.

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Year Published: 2019

Loggerhead sea turtle (Caretta caretta) diving changes with productivity, behavioral mode, and sea surface temperature

The relationship between dive behavior and oceanographic conditions is not well understood for marine predators, especially sea turtles. We tagged loggerhead turtles (Caretta caretta) with satellite-linked depth loggers in the Gulf of Mexico, where there is a minimal amount of dive data for this species. We tested for associations between four...

Iverson, Autumn; Fujisaki, Ikuko; Lamont, Margaret; Hart, Kristen

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Year Published: 2019

Council Monitoring and Assessment Program (CMAP): Inventory of existing water quality and habitat monitoring, and mapping metadata for Gulf of Mexico Programs

Under the Council-Selected Restoration Component of the RESTORE Act, the Council develops Funded Priority Lists (FPLs) that describe the projects and programs it will fund. Projects and programs funded through this component must be in furtherance of the goals and objectives of the Council’s Comprehensive Plan and address at least one of the...

Meyers, Michelle; Bosch, Julie; Burkart, Heidi; Clement, Chris; Enwright, Nicholas; Giordano, Steve; Jeffery, Chris; Hart, Rheannon; Hile, Sarah; Howell, Jacob; Lee, Michael; Laurenzano, Claudia ; McCloskey, Terrance; Mize, Scott; Monaco, Mark E.; Owen, Kevin; Rebich, Richard; Sample, Thomas; Steyer, Gregory D.; Suir, Kevin J.; Smith, Christopher G.; Watson, Katie; Bosch, Julie; Burkart, Heidi; Chivoiu, Bogdan; Clark, Randy; Clement, Chris; Enwright, Nicholas; Giordano, Steve; Jeffrey, Chris; Johnson, Edward; Hart, Rheannon M.; Hile, Sarah; Howell, Jacob; Laurenzano, Claudia ; Lee, Michael T.; McCloskey, Terrence A.; McTigue, Terry; Meyers, Michelle B.; Mize, Scott; Monaco, Mark E.; Owen, Kevin; Rebich, Richard A.; Rendon, Samuel H.; Robertson, Ali; Sample, Thomas; Steyer, Gregory D.; Suir, Kevin J.; Swarzenski, Christopher M.; Watson, Katie

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Year Published: 2019

Modeling barrier island habitats using landscape position information

Barrier islands are dynamic environments because of their position along the marine–estuarine interface. Geomorphology influences habitat distribution on barrier islands by regulating exposure to harsh abiotic conditions. Researchers have identified linkages between habitat and landscape position, such as elevation and distance from shore, yet...

Enwright, Nicholas; Lei Wang; Wang, Hongqing; Osland, Michael; Feher, Laura; Borchert, Sinéad M.; Day, Richard

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Year Published: 2019

Advancing barrier island habitat mapping using landscape position information

Barrier islands are dynamic ecosystems that change gradually from coastal processes, including currents and tides, and rapidly from episodic events, such as storms. These islands provide many important ecosystem services, including storm protection and erosion control to the mainland, habitat for fish and wildlife, and tourism. Habitat maps,...

Enwright, Nicholas; Wang, Lei; Borchert, Sinéad M.; Day, Richard; Feher, Laura; Osland, Michael
.

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Year Published: 2019

Mississippi river sediment diversions and coastal wetland sustainability: Synthesis of responses to freshwater, sediment, and nutrient inputs

Management and restoration of coastal wetlands require insight into how inundation, salinity, and the availability of mineral sediment and nutrients interact to influence ecosystem functions that control sustainability. The Mississippi River Delta, which ranks among the world's largest and most productive coastal wetland complexes, has experienced...

Elsey-Quirk, Tracy; Graham, Sean A.; Mendelssohn, Irving A.; Snedden, Gregg; Day, John W.; Shaffer, Gary P.; Sharp, Leigh Anne; Twilley, Robert R.; Pahl, James; Lane, R.R.

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Year Published: 2019

Florida Coastal Mapping Program—Overview and 2018 workshop report

The Florida Coastal Mapping Program is a nascent but highly relevant program that has the potential to greatly enhance the “Blue Economy” of Florida by coordinating and facilitating sea-floor mapping efforts and aligning partner and stakeholder activities for increased efficiency and cost reduction. Sustained acquisition of modern coastal mapping...

Hapke, Cheryl J.; Kramer, Philip A. ; Fetherston-Resch, Elizabeth H.; Baumstark, Rene D.; Druyor, Ryan; Fredericks, Xan; Fitos, Ekaterina
Hapke, C.J., Kramer, P.A., Fetherston-Resch, E.H., Baumstark, R.D., Druyor, R., Fredericks, X., and Fitos, E., 2019, Florida Coastal Mapping Program—Overview and 2018 workshop report: U.S. Geological Survey Open-File Report 2019–1017, 19 p., https://doi.org/10.3133/ofr20191017.

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Year Published: 2018

Sympatry or syntopy? Investigating drivers of distribution and co‐occurrence for two imperiled sea turtle species in Gulf of Mexico neritic waters

Animals co‐occurring in a region (sympatry) may use the same habitat (syntopy) within that region. A central aim in ecology is determining what factors drive species distributions (i.e., abiotic conditions, dispersal limitations, and/or biotic interactions). Assessing the degree of biotic interactions can be difficult for species with wide ranges...

Hart, Kristen M.; Iverson, Autumn R.; Fujisaki, Ikuko; Lamont, Margaret M.; Bucklin, David N.; Shaver, Donna J.

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Year Published: 2018

Assessing the impact of open-ocean and back-barrier shoreline change on Dauphin Island, Alabama, at multiple time scales over the last 75 years

Dauphin Island and Little Dauphin Island, collectively, make up a geomorphically complex barrier island system located along Alabama’s southern coast, separating Mississippi Sound from the Gulf of Mexico and Mobile Bay. The barrier island system provides numerous economical (tourism, fisheries) and natural (habitat for migratory birds, natural...

Smith, Christopher G.; Long, Joseph W.; Henderson, Rachel E.; Nelson, Paul R.
Smith, C.G., Long, J.W., Henderson, R.E., and Nelson, P.R., 2018, Assessing the impact of open-ocean and back-barrier shoreline change on Dauphin Island, Alabama, at multiple time scales over the last 75 years: U.S. Geological Survey Open-File Report 2018–1170, 20 p., https://doi.org/10.3133/ofr20181170.

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Year Published: 2018

Shared habitat use by juveniles of three sea turtle species

The first step in understanding how sympatric species share habitat is defining spatial boundaries. While home range data for juvenile sea turtles exists, few studies have examined spatial overlap of multiple species in foraging habitat. Using satellite tracking technology, we define home ranges for juveniles of 3 sea turtle species (loggerhead,...

Lamont, Margaret M.; Iverson, Autumn R.

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Year Published: 2018

Marine threats overlap key foraging habitat for two imperiled sea turtle species in the Gulf of Mexico

Effective management of human activities affecting listed species requires understanding both threats and animal habitat-use patterns. However, the extent of spatial overlap between high-use foraging areas (where multiple marine species congregate) and anthropogenic threats is not well known. Our modeling approach incorporates data on sea turtle...

Hart, Kristen M.; Iverson, Autumn R.; Fujisaki, Ikuko; Lamont, Margaret M.; Bucklin, David N.; Shaver, Donna J.
Hart, K.M., Iverson, A.R., Fujisaki, I., Lamont, M.M., Bucklin, D., and Shaver, D.J., 2018, Marine threats overlap key foraging habitat for two imperiled sea turtle species in the Gulf of Mexico: Frontiers in Marine Science, Provisionally Accepted, https://doi.org/10.3389/fmars.2018.00336 or https://www.frontiersin.org/articles/10.3389/fmars.2018.00336/abstract.