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The First Global Deep-Sea Stable Isotope Assessment Reveals The Unique Trophic Ecology Of Vampire Squid Vampyroteuthis Infernalis (Cephalopoda), A. V. Golikov, F. R. Ceia, R. M. Sabirov, J. D. Ablett, Ian G. Gleadall, Gudmundur Gudmundsson, Henk-Jan T. Hoving, Heather L. Judkins
The First Global Deep-Sea Stable Isotope Assessment Reveals The Unique Trophic Ecology Of Vampire Squid Vampyroteuthis Infernalis (Cephalopoda), A. V. Golikov, F. R. Ceia, R. M. Sabirov, J. D. Ablett, Ian G. Gleadall, Gudmundur Gudmundsson, Henk-Jan T. Hoving, Heather L. Judkins
USF St. Petersburg campus Faculty Publications
Vampyroteuthis infernalis Chun, 1903, is a widely distributed deepwater cephalopod with unique morphology and phylogenetic position. We assessed its habitat and trophic ecology on a global scale via stable isotope analyses of a unique collection of beaks from 104 specimens from the Atlantic, Pacific and Indian Oceans. Cephalopods typically are active predators occupying a high trophic level (TL) and exhibit an ontogenetic increase in δ15N and TL. Our results, presenting the first global comparison for a deep-sea invertebrate, demonstrate that V. infernalis has an ontogenetic decrease in δ15N and TL, coupled with niche broadening. Juveniles are mobile zooplanktivores, while larger …
Ecological And Indigenous Community Impacts Of Oil Spill Mortality In Alaskan Marine Ecosystems, Paul M. Suprenand, Carie Hoover, Cameron H. Ainsworth, L. Dornberger, C. J. Johnson
Ecological And Indigenous Community Impacts Of Oil Spill Mortality In Alaskan Marine Ecosystems, Paul M. Suprenand, Carie Hoover, Cameron H. Ainsworth, L. Dornberger, C. J. Johnson
Marine Science Faculty Publications
While hydrocarbon exploration and extraction in the Arctic ebbs and flows, reduced sea ice has opened new travel routes across the Arctic. The opening of the Northwest Passage has allowed larger ships (including oil tankers) and higher traffic into remote regions. More ice loss is expected in the future. With this comes the potential for hydrocarbon spills. To quantify the ecosystem impacts of a spill in the Alaska North Slope region, an Ecospace model using the Ecopath with Ecosim software was developed. We highlight the impacts of four potential hydrocarbon contamination scenarios: a subsurface crude oil pipeline release, a surface …
Cold Event In The South Atlantic Bight During Summer Of 2003: Anomalous Hydrographic And Atmospheric Conditions, Alfredo Aretxabaleta, James R. Nelson, Jack O. Blanton, Harvey E. Seim, Francisco E. Werner, John M. Bane, Robert H. Weisberg
Cold Event In The South Atlantic Bight During Summer Of 2003: Anomalous Hydrographic And Atmospheric Conditions, Alfredo Aretxabaleta, James R. Nelson, Jack O. Blanton, Harvey E. Seim, Francisco E. Werner, John M. Bane, Robert H. Weisberg
Marine Science Faculty Publications
Unusually cold seawater temperatures were observed along much of the U.S. eastern seaboard during the summer of 2003. In this study, hydrographic and atmospheric observations from spring through summer were analyzed to track the evolution of the cold water event in the South Atlantic Bight (SAB) and investigate links to various forcing mechanisms. The hydrographic observations included 13 cross‐shelf transects over the central region of the SAB, surface temperature time series from several NDBC stations, and bottom temperatures from a mid shelf mooring. Atmospheric data were obtained from NDBC stations. Additional data included water level from NOS stations and river …
Tide, Buoyancy, And Wind-Driven Circulation Of The Charlotte Harbor Estuary: A Model Study, Lianyuan Zheng, Robert H. Weisberg
Tide, Buoyancy, And Wind-Driven Circulation Of The Charlotte Harbor Estuary: A Model Study, Lianyuan Zheng, Robert H. Weisberg
Marine Science Faculty Publications
The circulation of the Charlotte Harbor (CH) estuary is explored with a primitive equation model that encompasses the estuary and the adjacent West Florida Shelf. Tidal forcing is from the shelf through the inlets. We use the M2, S2, K1, and O1 constituents that account for 95% of the shelf tidal variance. River inflows are by the Peace, Myakka, and Caloosahatchee Rivers at their spring 1998 mean values. Wind effects are considered for upwelling or downwelling favorable winds that are either held constant or allowed to oscillate with varying periodicities. These factors are …
Structure And Trophic Ecology Of A Low Latitude Midwater Decapod And Mysid Assemblage, Thomas L. Hopkins, Mark E. Flock, John V. Gartner Jr, Joseph J. Torres
Structure And Trophic Ecology Of A Low Latitude Midwater Decapod And Mysid Assemblage, Thomas L. Hopkins, Mark E. Flock, John V. Gartner Jr, Joseph J. Torres
Marine Science Faculty Publications
The micronektonic crustacean assemblage in the eastern Gulf of Mexico is an extension of the low latitude Atlantic and Caribbean faunas. Species showed highly varying diel distribution patterns ranging from a strong vertical migration to the epipelagic zone to absence of any migration resulting in a permanent residence deep in the mesopelagic zone. As in other low latitude areas, decapod species with variegated pigment patterns centered above 650 m during the day, whereas 'all-red' species centered below this depth. Standing stocks were estimated at 0.18 g dry wt m-2 and 3 ind. m-2 in the upper 1000 m. Diet analysis …