Search Results - "Palka, Debra"

Environmental predictors of habitat suitability and occurrence of cetaceans in the western North Atlantic Ocean by Chavez-Rosales, Samuel, Palka, Debra L., Garrison, Lance P., Josephson, Elizabeth A.

“…The objective of this study was to identify the main environmental covariates related to the abundance of 17 cetacean species/groups in the western North…”
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Habitat-based cetacean density models for the U.S. Atlantic and Gulf of Mexico by Roberts, Jason J., Best, Benjamin D., Mannocci, Laura, Fujioka, Ei, Halpin, Patrick N., Palka, Debra L., Garrison, Lance P., Mullin, Keith D., Cole, Timothy V. N., Khan, Christin B., McLellan, William A., Pabst, D. Ann, Lockhart, Gwen G.

“…Cetaceans are protected worldwide but vulnerable to incidental harm from an expanding array of human activities at sea. Managing potential hazards to these…”
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Consumption by marine mammals on the Northeast U.S. continental shelf by Smith, Laurel A, Link, Jason S, Cadrin, Steven X, Palka, Debra L

“…The economic and ecological impacts of fish consumption by marine mammals, the associated interactions with commercial fish stocks, and the forage demands of…”
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Subseasonal forecasts provide a powerful tool for dynamic marine mammal management by Stepanuk, Julia EF, Kim, Hyemi, Nye, Janet A, Roberts, Jason J, Halpin, Pat N, Palka, Debra L, Pabst, D Ann, McLellan, William A, Barco, Susan G, Thorne, Lesley H

“…Adaptive approaches are needed to effectively manage dynamic marine systems, and ecological forecasts can help managers anticipate when and where conservation…”
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Combining passive acoustic data from a towed hydrophone array with visual line transect data to estimate abundance and availability bias of sperm whales ( Physeter macrocephalus ) by Sigourney, Douglas B., DeAngelis, Annamaria, Cholewiak, Danielle, Palka, Debra

“…Visual line transect (VLT) surveys are central to the monitoring and study of marine mammals. However, for cryptic species such as deep diving cetaceans VLT…”
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Detection of Habitat Shifts of Cetacean Species: A Comparison Between 2010 and 2017 Habitat Suitability Conditions in the Northwest Atlantic Ocean by Chavez-Rosales, Samuel, Josephson, Elizabeth, Palka, Debra, Garrison, Lance

“…The simultaneous effects of human activities in the ocean and climate change have already produced a series of responses from the marine ecosystems. With the…”
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Towards a better characterisation of deep-diving whales' distributions by using prey distribution model outputs? by Virgili, Auriane, Hedon, Laura, Authier, Matthieu, Calmettes, Beatriz, Claridge, Diane, Cole, Tim, Corkeron, Peter, Dorémus, Ghislain, Dunn, Charlotte, Dunn, Tim E, Laran, Sophie, Lehodey, Patrick, Lewis, Mark, Louzao, Maite, Mannocci, Laura, Martínez-Cedeira, José, Monestiez, Pascal, Palka, Debra, Pettex, Emeline, Roberts, Jason J, Ruiz, Leire, Saavedra, Camilo, Santos, M Begoña, Van Canneyt, Olivier, Bonales, José Antonio Vázquez, Ridoux, Vincent

“…In habitat modelling, environmental variables are assumed to be proxies of lower trophic levels distribution and by extension, of marine top predator…”
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Developing and assessing a density surface model in a Bayesian hierarchical framework with a focus on uncertainty: insights from simulations and an application to fin whales ( Balaenoptera physalus ) by Sigourney, Douglas B, Chavez-Rosales, Samuel, Conn, Paul B, Garrison, Lance, Josephson, Elizabeth, Palka, Debra

“…Density surface models (DSMs) are an important tool in the conservation and management of cetaceans. Most previous applications of DSMs have adopted a two-step…”
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Beaked whales demonstrate a marked acoustic response to the use of shipboard echosounders by Cholewiak, Danielle, DeAngelis, Annamaria I., Palka, Debra, Corkeron, Peter J., Van Parijs, Sofie M.

“…The use of commercial echosounders for scientific and industrial purposes is steadily increasing. In addition to traditional navigational and fisheries uses,…”
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Vulnerability to climate change of United States marine mammal stocks in the western North Atlantic, Gulf of Mexico, and Caribbean by Lettrich, Matthew D., Asaro, Michael J., Borggaard, Diane L., Dick, Dorothy M., Griffis, Roger B., Litz, Jenny A., Orphanides, Christopher D., Palka, Debra L., Soldevilla, Melissa S., Balmer, Brian, Chavez, Samuel, Cholewiak, Danielle, Claridge, Diane, Ewing, Ruth Y., Fazioli, Kristi L., Fertl, Dagmar, Fougeres, Erin M., Gannon, Damon, Garrison, Lance, Gilbert, James, Gorgone, Annie, Hohn, Aleta, Horstman, Stacey, Josephson, Beth, Kenney, Robert D., Kiszka, Jeremy J., Maze-Foley, Katherine, McFee, Wayne, Mullin, Keith D., Murray, Kimberly, Pendleton, Daniel E., Robbins, Jooke, Roberts, Jason J., Rodriguez- Ferrer, Grisel, Ronje, Errol I., Rosel, Patricia E., Speakman, Todd, Stanistreet, Joy E., Stevens, Tara, Stolen, Megan, Moore, Reny Tyson, Vollmer, Nicole L., Wells, Randall, Whitehead, Heidi R., Whitt, Amy

“…Climate change and climate variability are affecting marine mammal species and these impacts are projected to continue in the coming decades. Vulnerability…”
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Known and inferred distributions of beaked whale species (Cetacea: Ziphiidae) by MacLeod, Colin D., Perrin, William F., Pitman, Robert, Barlow, Jay, Ballance, Lisa, D'Amico, Angela, Gerrodette, Tim, Joyce, Gerald, Mullin, Keith D., Palka, Debra L., Waring, Gordon T.

“…Information regarding beaked whales is so sparse that even the most basic aspects of their biology, such as their distribution, remain poorly defined for some…”
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Tight spatial coupling of a marine predator with soniferous fishes: Using joint modelling to aid in ecosystem approaches to management by Roberts, Sarah M., Jacoby, Ann-Marie, Roberts, Jason J., Leslie, Jaelyn, Payne, Khadijah L., Read, Andrew J., Halpin, Patrick N., Barco, Susan, Garrison, Lance, McLellan, William, Palka, Debra, Nye, Janet A.

“…Aim Understanding the distribution of marine organisms is essential for effective management of highly mobile marine predators that face a variety of…”
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Combining multiple visual surveys to model the habitat of deep‐diving cetaceans at the basin scale: Large‐scale modelling of deep‐diving cetacean habitats by Virgili, Auriane, Authier, Matthieu, Boisseau, Oliver, Cañadas, Ana, Claridge, Diane, Cole, Tim, Corkeron, Peter, Dorémus, Ghislain, David, Léa, Di‐Méglio, Nathalie, Dunn, Charlotte, Dunn, Tim E., García‐Barón, Isabel, Laran, Sophie, Lauriano, Giancarlo, Lewis, Mark, Louzao, Maite, Mannocci, Laura, Martínez‐Cedeira, José, Palka, Debra, Panigada, Simone, Pettex, Emeline, Roberts, Jason J., Ruiz, Leire, Saavedra, Camilo, Santos, M. Begoña, Van Canneyt, Olivier, Vázquez Bonales, José Antonio, Monestiez, Pascal, Ridoux, Vincent

“…Abstract Aim Deep‐diving cetaceans are oceanic species exposed to multiple anthropogenic pressures including high intensity underwater noise, and knowledge of…”
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Simulations of IDCR and SOWER Antarctic minke whale abundance surveys by Palka, Debra L., Smith, Daniel W.

“…The International Whaling Commission (IWC) conducted abundance line‐transect surveys of Antarctic minke whales (Balaenoptera bonaerensis) during the…”
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Combining multiple visual surveys to model the habitat of deep‐diving cetaceans at the basin scale by Virgili, Auriane, Authier, Matthieu, Boisseau, Oliver, Cañadas, Ana, Claridge, Diane, Cole, Tim, Corkeron, Peter, Dorémus, Ghislain, David, Léa, Di‐Méglio, Nathalie, Dunn, Charlotte, Dunn, Tim E., García‐Barón, Isabel, Laran, Sophie, Lauriano, Giancarlo, Lewis, Mark, Louzao, Maite, Mannocci, Laura, Martínez‐Cedeira, José, Palka, Debra, Panigada, Simone, Pettex, Emeline, Roberts, Jason J., Ruiz, Leire, Saavedra, Camilo, Santos, M. Begoña, Van Canneyt, Olivier, Vázquez Bonales, José Antonio, Monestiez, Pascal, Ridoux, Vincent, Keith, Sally

“…Aim Deep‐diving cetaceans are oceanic species exposed to multiple anthropogenic pressures including high intensity underwater noise, and knowledge of their…”
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The Northeast U.S. continental shelf Energy Modeling and Analysis exercise (EMAX): Ecological network model development and basic ecosystem metrics by Link, Jason, Overholtz, William, O'Reilly, John, Green, Jack, Dow, David, Palka, Debra, Legault, Chris, Vitaliano, Joseph, Guida, Vincent, Fogarty, Michael, Brodziak, Jon, Methratta, Lisa, Stockhausen, William, Col, Laurel, Griswold, Carolyn

“…During the past half-century notable changes have occurred in the Northeast U.S. (NEUS) Continental Shelf Large Marine Ecosystem (LME). To understand how the…”
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Towards a better characterisation of deep-diving whales’ distributions by using prey distribution model outputs? by Auriane Virgili, Laura Hedon, Matthieu Authier, Beatriz Calmettes, Diane Claridge, Tim Cole, Peter Corkeron, Ghislain Dorémus, Charlotte Dunn, Tim E. Dunn, Sophie Laran, Patrick Lehodey, Mark Lewis, Maite Louzao, Laura Mannocci, José Martínez-Cedeira, Pascal Monestiez, Debra Palka, Emeline Pettex, Jason J. Roberts, Leire Ruiz, Camilo Saavedra, M. Begoña Santos, Olivier Van Canneyt, José Antonio Vázquez Bonales, Vincent Ridoux

“…In habitat modelling, environmental variables are assumed to be proxies of lower trophic levels distribution and by extension, of marine top predator…”
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To Touch a Wild Dolphin: A Journey of Discovery with the Sea’s Most Intelligent Creatures . By Rachel  Smolker. Anchor Books. New York: Random House. $26.00 (hardcover); $14.95 (paper). ix + 274 p + 16 pl; ill.; no index. ISBN: 0–385–49176‐X (hc); 0–385–49177–8 (pb). 2001 by Palka, Debra

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Handbook of Marine Mammals. Volume 6: The Second Book of Dolphins and the Porpoises . Sam H. Ridgway , Richard Harrison by Palka, Debra

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Response of balanced network models to large-scale perturbation: Implications for evaluating the role of small pelagics in the Gulf of Maine by Link, Jason, Col, Laurel, Guida, Vincent, Dow, David, O’Reilly, John, Green, Jack, Overholtz, William, Palka, Debra, Legault, Chris, Vitaliano, Joseph, Griswold, Carolyn, Fogarty, Michael, Friedland, Kevin

“…Exploring the response of an ecosystem, and subsequent tradeoffs among its biological community, to human perturbations remains a key challenge for the…”
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