A5044167452- Turtle Biology and Conservation
- Marine animal studies overview
- Ichthyology and Marine Biology
- Amphibian and Reptile Biology
- Oil Spill Detection and Mitigation
- Marine and coastal ecosystems
- Marine and coastal plant biology
- Fish Ecology and Management Studies
- Physiological and biochemical adaptations
- Wildlife Conservation and Criminology Analyses
- Rabies epidemiology and control
- Avian ecology and behavior
- Marine Invertebrate Physiology and Ecology
- Marine Toxins and Detection Methods
- Remote Sensing and Land Use
- Air Quality and Health Impacts
- Cephalopods and Marine Biology
- Hydrocarbon exploration and reservoir analysis
- Marine and fisheries research
- Marine Biology and Ecology Research
- Bat Biology and Ecology Studies
- Fisheries and Aquaculture Studies
- Wildlife Ecology and Conservation
- Cardiovascular Conditions and Treatments
- Per- and polyfluoroalkyl substances research
Florida Fish and Wildlife Conservation Commission
2014-2024
University of Amsterdam
2024
NOAA National Marine Fisheries Service Southeast Fisheries Science Center
2022
NOAA National Marine Fisheries Service
2019-2022
University of South Florida St. Petersburg
2010-2018
College of Marin
2010-2018
Idaho Department of Fish and Game
2005
Met Office
1999
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 463:1-22 (2012) - DOI: https://doi.org/10.3354/meps09970 FEATURE ARTICLE Young sea turtles of pelagic Sargassum-dominated drift community: habitat use, population density, and threats Blair Witherington1,*, Shigetomo Hirama1, Robert Hardy2,3 1Fish Wildlife Research Institute, Florida Fish Conservation...
Abstract Somatic growth is an integrated, individual‐based response to environmental conditions, especially in ectotherms. Growth dynamics of large, mobile animals are particularly useful as bio‐indicators change at regional scales. We assembled rate data from throughout the West Atlantic for green turtles, Chelonia mydas , which long‐lived, highly migratory, primarily herbivorous mega‐consumers that may migrate over hundreds thousands kilometers. Our dataset, largest ever compiled sea has...
ABSTRACT Mortality from being struck by a motorized watercraft is considerable for many aquatic vertebrates around the world, including sea turtles. We studied stranded (i.e., dead, sick, or injured) turtles found in Florida, USA, during 1986–2014 and identified those with sharp force blunt injuries indicative of vessel strike. About third loggerheads ( Caretta caretta ), green Chelonia mydas leatherbacks Dermochelys coriacea ) had vessel‐strike injury (VSI). The frequency this was lower but...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 9:105-116 (2010) - DOI: https://doi.org/10.3354/esr00245 Size-class partitioning and herding in a foraging group of green turtles Chelonia mydas Michael J. Bresette1,*, Blair E. Witherington2, Richard M. Herren1, Dean A. Bagley1, Jonathan C. Gorham1, Steve L. Traxler1, Carrie K. Crady1, Robert Hardy3 1Inwater Group...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 21:191-203 (2013) - DOI: https://doi.org/10.3354/esr00516 Using an ocean model predict likely drift tracks of sea turtle carcasses in north central Gulf Mexico Redwood W. Nero1,*, Melissa Cook2, Andrew T. Coleman3, Moby Solangi3, Robert Hardy4 1NOAA Fisheries, Southeast Fisheries Science Center, Bldg 1021, Stennis...
Abstract To understand the demographic responses of green turtles to seagrass decline, we examined a data set from study mixed-stock foraging aggregation immature turtles, Chelonia mydas, collected in Bermuda (32 o 18’N, − 64 46’W) over five decades. Average turtle size (SCL min ) and mass declined by 22.3% 58.2%, respectively. Aggregation structure shifted smaller sizes now consists more small fewer large turtles. Density (turtles ha −1 increased significantly but biomass (kg remained...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 21:129-142 (2013) - DOI: https://doi.org/10.3354/esr00512 Postnesting migratory behavior of loggerhead sea turtles Caretta caretta from three Florida rookeries Allen M. Foley1,*, Barbara A. Schroeder2, Robert Hardy3, Sandra L. MacPherson4, Mark Nicholas5, Michael S. Coyne6 1Florida Fish and Wildlife Conservation...
We used satellite telemetry to study behavior at foraging sites of 40 adult female loggerhead sea turtles (Caretta caretta) from three Florida (USA) rookeries. Foraging were located in four countries (USA, Mexico, the Bahamas, and Cuba). able determine home range for 32 loggerheads. One turtle moved through several temporary residence areas, but rest had a primary area which they spent all or most their time (usually >11 months per year). Twenty-four that was <500 km2 (mean = 191). Seven...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 33:83-93 (2017) - DOI: https://doi.org/10.3354/esr00794 Impact of Deepwater Horizon oil spill on loggerhead turtle Caretta caretta nest densities in northwest Florida Ann Marie Lauritsen1,*, Philip M. Dixon2, Dave Cacela3, Beth Brost4, Robert Hardy4, Sandra L. MacPherson1, Anne Meylan4, Bryan P. Wallace3,5, Blair...
AbstractSea turtles exhibit behavioral responses to cope with metabolic changes caused by seasonal water temperature fluctuations. Extremely low temperatures (below 10 °C) may result in a mass hypothermic stunning (cold-stun) event, and very limited time window exists within which sea can be rescued rehabilitated. Accurately recognizing predicting weather patterns that cause abrupt cold snaps alert turtle rescue groups rehabilitation facilities advance of the cold-stun improving their...
Information on the spatial and temporal distribution of protected marine species is critical for development conservation strategies. We examined a 12-year dataset describing postnesting residence areas 81 adult female loggerhead turtles (Caretta caretta) West Florida Shelf (WFS) in northeastern Gulf Mexico. The aggregation loggerheads WFS represents at least four US recovery units this species. identified several seasonally persistent that were shared by multiple WFS. majority (69%)...
In late October and early November 2013 2017, hundreds of sea turtles were found dead along the Pacific coastline El Salvador. The in good body condition did not have any injuries or other major anomalies. order to determine role paralytic shellfish toxins (PSTs) this mass mortality, tissue samples, including blood, flipper, liver, kidney, stomach intestinal contents, green (Chelonia mydas) olive ridley (Lepidochelys olivacea) analyzed for PSTs using a radioactive receptor binding assay,...
Burbot Lota lota movement and river discharge were studied in the Kootenai River, Idaho, U.S.A. British Columbia, Canada, downstream of Libby Dam, Montana, A total 24 adult burbot with transmitters tracked from 1994 to 2000, for analysis a travel distance ≥5 km ≤10 days termed ‘stepwise movement’. Of 44 movements’, significantly greater movements during pre‐spawning spawning observed when average daily discharges Dam <300 m 3 s −1 , mean 176 similar pre‐dam conditions. travelled at rate...
The marine environment in the Ekofisk area was assayed for presence of oil components after blowout on Platform Bravo brought under control. Several methods assay were used but results not always strictly comparable. Relatively high fluorescence values observed water samples vicinity platform. However, gas–liquid chromatography these indicated that although some hydrocarbon fractions now resembled crude oil, none had increased markedly concentration. could be detected biota and taste panels...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 601:215-226 (2018) - DOI: https://doi.org/10.3354/meps12693 Mixed stock analyses indicate population-scale connectivity effects of active dispersal by surface-pelagic green turtles Brian M. Shamblin1,*, Blair E. Witherington2, Shigetomo Hirama2,3, Robert F. Hardy3, Campbell J. Nairn1 1Daniel B. Warnell School...
Despite the widespread presence of per- and polyfluoroalkyl substances (PFAS) in freshwater environments, only a few studies have addressed their bioaccumulation macrophytes benthic invertebrates. This study therefore aimed at investigating 40 PFAS sediments, assessing rooting macrophyte (Myriophyllum spicatum) invertebrate (Lumbriculus variegatus) examining effects bioturbation activity on plants. The were exposed to sediments originating from reference PFAS-contaminated site. worms...
Compared with our understanding of most aspects sea turtle biology, knowledge the surface-pelagic juvenile life stages remains limited. Young North Atlantic cheloniids (hard-shelled turtles) are closely associated drift communities (SPDCs), which dominated by macroalgae genus Sargassum. We quantified SPDCs in eastern Gulf Mexico, a region that hosts four species during their stage. Landsat satellite imagery was used to identify and measure areal coverage 2003-2011 (1323 images). Although...
Marine Spatial Planning (MSP) provides a process that uses spatial data and models to evaluate environmental, social, economic, cultural, management trade-offs when siting (i.e., strategically locating) ocean industries. Aquaculture is the fastest-growing food sector in world. The United States (U.S.) has substantial opportunity for offshore aquaculture development given size of its exclusive economic zone, habitat diversity, variety candidate species cultivation. However, promising areas...
The use of marine offshore benthic habitats by sea turtles is poorly characterized due to the difficulty obtaining in situ data. Understanding habitat that important species’ reproduction, foraging, and migrations critical for guiding management decisions. A towed camera-based assessment survey system (C-BASS) equipped with environmental sensors was used characterize assess on West Florida Shelf (WFS) from 2014 2018. During these cruises, were opportunistically observed during surveys, data...