Search Results - "Hinke, Jefferson T"

An accurate and adaptable photogrammetric approach for estimating the mass and body condition of pinnipeds using an unmanned aerial system by Krause, Douglas J, Hinke, Jefferson T, Perryman, Wayne L, Goebel, Michael E, LeRoi, Donald J

“…Measurements of body size and mass are fundamental to pinniped population management and research. Manual measurements tend to be accurate but are invasive and…”
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Impacts of rising sea temperature on krill increase risks for predators in the Scotia Sea by Klein, Emily S, Hill, Simeon L, Hinke, Jefferson T, Phillips, Tony, Watters, George M

“…Climate change is a threat to marine ecosystems and the services they provide, and reducing fishing pressure is one option for mitigating the overall…”
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Variability in krill biomass links harvesting and climate warming to penguin population changes in Antarctica by Trivelpiece, Wayne Z, Hinke, Jefferson T, Miller, Aileen K, Reiss, Christian S, Trivelpiece, Susan G, Watters, George M

“…The West Antarctic Peninsula (WAP) and adjacent Scotia Sea support abundant wildlife populations, many of which were nearly extirpated by humans. This region…”
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Identifying Risk: Concurrent Overlap of the Antarctic Krill Fishery with Krill-Dependent Predators in the Scotia Sea by Hinke, Jefferson T, Cossio, Anthony M, Goebel, Michael E, Reiss, Christian S, Trivelpiece, Wayne Z, Watters, George M

“…Mitigating direct and indirect interactions between marine predators and fisheries is a motivating factor for ecosystem-based fisheries management (EBFM),…”
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A method to estimate prey density from single-camera images: A case study with chinstrap penguins and Antarctic krill by Hermanson, Victoria R, Cutter, George R, Hinke, Jefferson T, Dawkins, Matthew, Watters, George M

“…Estimating the densities of marine prey observed in animal-borne video loggers when encountered by foraging predators represents an important challenge for…”
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Serendipitous observations from animal-borne video loggers reveal synchronous diving and equivalent simultaneous prey capture rates in chinstrap penguins by Hinke, Jefferson T., Russell, Tamara M., Hermanson, Victoria R., Brazier, Laura, Walden, Stephanie L.

“…Seabirds often engage in coordinated, cooperative foraging to improve detection and capture of prey. An extreme example of such coordinated behavior is…”
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Individual variation in migratory movements of chinstrap penguins leads to widespread occupancy of ice-free winter habitats over the continental shelf and deep ocean basins of the Southern Ocean by Hinke, Jefferson T, Santos, Maria M, Korczak-Abshire, Malgorzata, Milinevsky, Gennadi, Watters, George M

“…A goal of tracking migratory animals is to characterize the habitats they use and to interpret population processes with respect to conditions experienced en…”
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Drones Minimize Antarctic Predator Responses Relative to Ground Survey Methods: An Appeal for Context in Policy Advice by Krause, Douglas J., Hinke, Jefferson T., Goebel, Michael E., Perryman, Wayne L.

“…Unoccupied aerial systems (UAS) have become common tools for ecological monitoring and management. However, UAS use has the potential to negatively affect…”
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Circumpolar analysis of the Adélie Penguin reveals the importance of environmental variability in phenological mismatch by Youngflesh, Casey, Jenouvrier, Stephanie, Li, Yun, Ji, Rubao, Ainley, David G., Ballard, Grant, Barbraud, Christophe, Delord, Karine, Dugger, Katie M., Emmerson, Louise M., Fraser, William R., Hinke, Jefferson T., Lyver, Phil O'B., Olmastroni, Silvia, Southwell, Colin J., Trivelpiece, Susan G., Trivelpiece, Wayne Z., Lynch, Heather J.

“…Evidence of climate-change-driven shifts in plant and animal phenology have raised concerns that certain trophic interactions may be increasingly mismatched in…”
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The foraging behavior of nonbreeding Adélie penguins in the western Antarctic Peninsula during the breeding season by Oosthuizen, W. Chris, Pistorius, Pierre A., Korczak‐Abshire, Malgorzata, Hinke, Jefferson T., Santos, Mercedes, Lowther, Andrew D.

“…Information on marine predator at‐sea distributions is key to understanding ecosystem and community dynamics and an important component of spatial management…”
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Spatial and isotopic niche partitioning during winter in chinstrap and Adélie penguins from the South Shetland Islands by Hinke, Jefferson T, Polito, Michael J, Goebel, Michael E, Jarvis, Sharon, Reiss, Christian S, Thorrold, Simon R, Trivelpiece, Wayne Z, Watters, George M

“…Closely related species with similar ecological requirements should exhibit segregation along spatial, temporal, or trophic niche axes to limit the degree of…”
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Evaluating Thermal and Color Sensors for Automating Detection of Penguins and Pinnipeds in Images Collected with an Unoccupied Aerial System by Hinke, Jefferson T., Giuseffi, Louise M., Hermanson, Victoria R., Woodman, Samuel M., Krause, Douglas J.

“…Estimating seabird and pinniped abundance is central to wildlife management and ecosystem monitoring in Antarctica. Unoccupied aerial systems (UAS) can collect…”
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Marine Important Bird and Biodiversity Areas for Penguins in Antarctica, Targets for Conservation Action by Handley, Jonathan, Rouyer, Marie-Morgane, Pearmain, Elizabeth J., Warwick-Evans, Victoria, Teschke, Katharina, Hinke, Jefferson T., Lynch, Heather, Emmerson, Louise, Southwell, Colin, Griffith, Gary, Cárdenas, César A., Franco, Aldina M. A., Trathan, Phil, Dias, Maria P.

“…Global targets for area-based conservation and management must move beyond threshold-based targets alone and must account for the quality of such areas. In the…”
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Variable vital rates and the risk of population declines in Adélie penguins from the Antarctic Peninsula region by Hinke, Jefferson T., Trivelpiece, Susan G., Trivelpiece, Wayne Z.

“…Predicting population responses in changing environments is an important task for ecologists. In polar regions, climate warming, loss of sea ice, and more…”
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Identification of marine Important Bird and Biodiversity Areas for penguins around the South Shetland Islands and South Orkney Islands by Dias, Maria P., Carneiro, Ana Paula Bertoldi, Warwick‐Evans, Victoria, Harris, Colin, Lorenz, Katharina, Lascelles, Ben, Clewlow, Harriet L., Dunn, Michael J., Hinke, Jefferson T., Kim, Jeong‐Hoon, Kokubun, Nobuo, Manco, Fabrizio, Ratcliffe, Norman, Santos, Mercedes, Takahashi, Akinori, Trivelpiece, Wayne, Trathan, Philip N.

“…Aim To provide a method of analyzing penguin tracking data to identify priority at‐sea areas for seabird conservation (marine IBAs), based on pre‐existing…”
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Long-term observations from Antarctica demonstrate that mismatched scales of fisheries management and predator-prey interaction lead to erroneous conclusions about precaution by Watters, George M., Hinke, Jefferson T., Reiss, Christian S.

“…Low catch limits for forage species are often considered to be precautionary measures that can help conserve marine predators. Difficulties measuring the…”
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Conservation in the Scotia Sea in light of expiring regulations and disrupted negotiations by Watters, George M., Hinke, Jefferson T.

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A small unmanned aerial system for estimating abundance and size of Antarctic predators by Goebel, Michael E., Perryman, Wayne L., Hinke, Jefferson T., Krause, Douglas J., Hann, Nancy A., Gardner, Steve, LeRoi, Donald J.

“…Quantifying the distribution and abundance of predators is integral to many ecological studies, but can be difficult in remote settings such as Antarctica…”
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Are the diets of sympatric Pygoscelid penguins more similar than previously thought? by Wawrzynek-Borejko, Justyna, Panasiuk, Anna, Hinke, Jefferson T., Korczak-Abshire, Małgorzata

“…In recent years, functional changes in Southern Ocean are becoming more noticeable, due to climate change and increasing human impacts, including a growing…”
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Influence of migration range and foraging ecology on mercury accumulation in Southern Ocean penguins by Sontag, Philip T., Godfrey, Linda V., Fraser, William R., Hinke, Jefferson T., Reinfelder, John R.

“…In order to evaluate mercury (Hg) accumulation patterns in Southern Ocean penguins, we measured Hg concentrations and carbon (δ13C) and nitrogen (δ15N) stable…”
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