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VIMS Articles

2018

Physical Sciences

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Full-Text Articles in Life Sciences

Likely Locations Of Sea Turtle Stranding Mortality Using Experimentally- Calibrated, Time And Space-Specific Drift Models, Bianca S. Santos, Marjorie A.M. Friedrichs, Sarah A. Rose, Susan G. Barco, David M. Kaplan Oct 2018

Likely Locations Of Sea Turtle Stranding Mortality Using Experimentally- Calibrated, Time And Space-Specific Drift Models, Bianca S. Santos, Marjorie A.M. Friedrichs, Sarah A. Rose, Susan G. Barco, David M. Kaplan

VIMS Articles

Sea turtle stranding events provide an opportunity to study drivers of mortality, but causes of strandings are poorly understood. A general sea turtle carcass oceanographic drift model was developed to estimate likely mortality locations from coastal sea turtle stranding records. Key model advancements include realistic direct wind forcing on carcasses, temperature driven carcass decomposition and the development of mortality location predictions for individual strandings. We applied this model to 2009–2014 stranding events within the Chesapeake Bay, Virginia. Predicted origin of vessel strike strandings were compared to commercial vessel data, and potential hazardous turtle-vessel interactions were identified in the southeastern Bay …


The Contribution Of Local And Transport Processes To Phytoplankton Biomass Variability Over Different Timescales In The Upper James River, Virginia, Qubin Quin, Jian Shen Sep 2018

The Contribution Of Local And Transport Processes To Phytoplankton Biomass Variability Over Different Timescales In The Upper James River, Virginia, Qubin Quin, Jian Shen

VIMS Articles

Although both local processes (photosynthesis, respiration, grazing, and settling), and transport processes (advective transport and diffusive transport) significantly affect local phytoplankton dynamics, it is difficult to separate their contributions and to investigate the relative importance of each process to the local variability of phytoplankton biomass over different timescales. A method of using the transport rate is introduced to quantify the contribution of transport processes. By combining the time-varying transport rate and high-frequency observed chlorophyll a data, we can explicitly examine the impact of local and transport processes on phytoplankton biomass over a range of timescales from hourly to annually. For …