Todd Speakman
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View article: Vulnerability to climate change of United States marine mammal stocks in the western North Atlantic, Gulf of Mexico, and Caribbean
Vulnerability to climate change of United States marine mammal stocks in the western North Atlantic, Gulf of Mexico, and Caribbean Open
Climate change and climate variability are affecting marine mammal species and these impacts are projected to continue in the coming decades. Vulnerability assessments provide a framework for evaluating climate impacts over a broad range o…
View article: Associations and ranging patterns of common bottlenose dolphins near Brunswick, Georgia, USA
Associations and ranging patterns of common bottlenose dolphins near Brunswick, Georgia, USA Open
The Southern Georgia Estuarine System (SGES) stock of common bottlenose dolphins ( Tursiops truncatus ) resides in estuarine waters near Brunswick, Georgia, USA. There are concerns for this population due to the presence of anthropogenic s…
View article: Mark-recapture estimates of seasonal abundance and survivorship for bottlenose dolphins (Tursiops truncatus) near Charleston, South Carolina, USA
Mark-recapture estimates of seasonal abundance and survivorship for bottlenose dolphins (Tursiops truncatus) near Charleston, South Carolina, USA Open
The stock structure of western North Atlantic bottlenose dolphins (Tursiops truncatus) is complex, with seasonally migratory stocks often overlapping with year-round resident stocks. High rates of exchange between northernmost sites have b…
View article: An expert‐based system to predict population survival rate from health data
An expert‐based system to predict population survival rate from health data Open
Timely detection and understanding of causes for population decline are essential for effective wildlife management and conservation. Assessing trends in population size has been the standard approach, but we propose that monitoring popula…
View article: Poor pulmonary health in Barataria Bay dolphins in the eight years following the Deepwater Horizon oil spill
Poor pulmonary health in Barataria Bay dolphins in the eight years following the Deepwater Horizon oil spill Open
The Deepwater Horizon (DWH) disaster resulted in large-scale contamination of bays, sounds, and estuaries in the northern Gulf of Mexico, home to multiple stocks of common bottlenose dolphins (Tursiops truncatus). Inhalation, aspiration, i…
View article: Modeling population effects of the <i>Deepwater Horizon</i> oil spill on a long‐lived species
Modeling population effects of the <i>Deepwater Horizon</i> oil spill on a long‐lived species Open
The 2010 Deepwater Horizon (DWH) oil spill exposed common bottlenose dolphins ( Tursiops truncatus ) in Barataria Bay, Louisiana to heavy oiling that caused increased mortality and chronic disease and impaired reproduction in surviving dol…
View article: Estimating spatially-varying density and time-varying demographics with open population spatial capture-recapture: a photo-ID case study on bottlenose dolphins in Barataria Bay, Louisana, USA
Estimating spatially-varying density and time-varying demographics with open population spatial capture-recapture: a photo-ID case study on bottlenose dolphins in Barataria Bay, Louisana, USA Open
1. From long-term, spatial capture-recapture (SCR) surveys we infer a population's dynamics over time and distribution over space. It is becoming more computationally feasible to fit these open population SCR (openSCR) models to large data…
View article: Age determination of common bottlenose dolphins (Tursiops truncatus) using dental radiography pulp:tooth area ratio measurements
Age determination of common bottlenose dolphins (Tursiops truncatus) using dental radiography pulp:tooth area ratio measurements Open
Age is an important parameter to better understand wildlife populations, and is especially relevant for interpreting data for fecundity, health, and survival assessments. Estimating ages for marine mammals presents a particular challenge d…
View article: <i>finFindR</i>: Computer-assisted Recognition and Identification of Bottlenose Dolphin Photos in R
<i>finFindR</i>: Computer-assisted Recognition and Identification of Bottlenose Dolphin Photos in R Open
Photographic identification is an essential research and management tool for studying population size and dynamics of common bottlenose dolphins ( Tursiops truncatus ). Photographic identification involves recognizing individuals based on …
View article: Common bottlenose dolphin (<scp><i>Tursiops truncatus</i></scp>) abundance and distribution patterns in St Andrew Bay, Florida, USA
Common bottlenose dolphin (<span><i>Tursiops truncatus</i></span>) abundance and distribution patterns in St Andrew Bay, Florida, USA Open
Common bottlenose dolphins ( Tursiops truncatus ) are found in temperate and tropical waters of the world across a wide range of habitats. Along Florida's north‐western coast, this species resides in the bays, sounds, and estuaries (BSE) a…
View article: Ranging patterns, spatial overlap, and association with dolphin morbillivirus exposure in common bottlenose dolphins <i>(Tursiops truncatus)</i> along the Georgia, USA coast
Ranging patterns, spatial overlap, and association with dolphin morbillivirus exposure in common bottlenose dolphins <i>(Tursiops truncatus)</i> along the Georgia, USA coast Open
During 2013–2015, an outbreak of dolphin morbillivirus (DMV) occurred in the western North Atlantic, which resulted in the stranding of over 1,600 common bottlenose dolphins (Tursiops truncatus) . There are currently five coastal and 10 ba…
View article: Density, abundance, survival, and ranging patterns of common bottlenose dolphins (Tursiops truncatus) in Mississippi Sound following the Deepwater Horizon oil spill
Density, abundance, survival, and ranging patterns of common bottlenose dolphins (Tursiops truncatus) in Mississippi Sound following the Deepwater Horizon oil spill Open
After the Deepwater Horizon (DWH) oil spill began in April 2010, studies were initiated on northern Gulf of Mexico common bottlenose dolphins (Tursiops truncatus) in Mississippi Sound (MSS) to determine density, abundance, and survival, du…
View article: Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA
Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA Open
Little is known about common bottlenose dolphin (Tursiops truncatus) seasonal migration along the United States southeastern Atlantic coast, or what factors influence migratory patterns. Therefore, our objectives were to: 1) document evide…