Search Results - "SOUTHWELL, Colin"

Continental-scale mapping of Adélie penguin colonies from Landsat imagery by Schwaller, Mathew R., Southwell, Colin J., Emmerson, Louise M.

“…Breeding distribution of the Adélie penguin, Pygoscelis adeliae, was surveyed with Landsat-7 Enhanced Thematic Mapper Plus (ETM+) data in an area covering…”
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Density dependence forces divergent population growth rates and alters occupancy patterns of a central place foraging Antarctic seabird by Southwell, Colin, Emmerson, Louise

“…Density‐dependent regulation is an important process in spatio‐temporal population dynamics because it can alter the effects of synchronizing processes…”
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Adélie penguin population diet monitoring by analysis of food DNA in scats by Jarman, Simon N, McInnes, Julie C, Faux, Cassandra, Polanowski, Andrea M, Marthick, James, Deagle, Bruce E, Southwell, Colin, Emmerson, Louise

“…The Adélie penguin is the most important animal currently used for ecosystem monitoring in the Southern Ocean. The diet of this species is generally studied by…”
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Time-lapse imagery of Adélie penguins reveals differential winter strategies and breeding site occupation by Black, Caitlin, Southwell, Colin, Emmerson, Louise, Lunn, Daniel, Hart, Tom

“…Polar seabirds adopt different over-wintering strategies to survive and build condition during the critical winter period. Penguin species either reside at the…”
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Spatially Extensive Standardized Surveys Reveal Widespread, Multi-Decadal Increase in East Antarctic Adélie Penguin Populations by Southwell, Colin, Emmerson, Louise, McKinlay, John, Newbery, Kym, Takahashi, Akinori, Kato, Akiko, Barbraud, Christophe, DeLord, Karine, Weimerskirch, Henri

“…Seabirds are considered to be useful and practical indicators of the state of marine ecosystems because they integrate across changes in the lower trophic…”
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Delay in Adélie penguin nest occupation restricts parental investment in nest construction and reduces reproductive output by McLatchie, Madi J., Emmerson, Louise, Wotherspoon, Simon, Southwell, Colin

“…Reproductive success is an important demographic parameter that can be driven by environmental and behavioural factors operating on various spatio‐temporal…”
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Sea Ice Cover and Its Influence on Adélie Penguin Reproductive Performance by Emmerson, Louise, Southwell, Colin

“…The relationship between Adélie Penguins (Pygoscelis adeliae) and ice is well established, with sea ice influencing penguin populations through a variety of…”
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Important marine habitat off east Antarctica revealed by two decades of multi-species predator tracking by Raymond, Ben, Lea, Mary-Anne, Patterson, Toby, Andrews-Goff, Virginia, Sharples, Ruth, Charrassin, Jean-Benoît, Cottin, Manuelle, Emmerson, Louise, Gales, Nick, Gales, Rosemary, Goldsworthy, Simon D., Harcourt, Rob, Kato, Akiko, Kirkwood, Roger, Lawton, Kieran, Ropert-Coudert, Yan, Southwell, Colin, van den Hoff, John, Wienecke, Barbara, Woehler, Eric J., Wotherspoon, Simon, Hindell, Mark A.

“…Satellite telemetry data are a key source of animal distribution information for marine ecosystem management and conservation activities. We used two decades…”
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Responses of Antarctic pack-ice seals to environmental change and increasing krill fishing by Forcada, Jaume, Trathan, Philip N., Boveng, Peter L., Boyd, Ian L., Burns, Jennifer M., Costa, Daniel P., Fedak, Michael, Rogers, Tracey L., Southwell, Colin J.

“…► The highest known density of Antarctic pack-ice seals is in the Antarctic Peninsula. ► Crabeater seals could consume approximately 17% of Antarctic krill in…”
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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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Quantifying the role of iron recycling by Adélie and Emperor penguins over the austral spring and summer in Prydz Bay by Ratnarajah, Lavenia, Emmerson, Louise, Southwell, Colin, Lannuzel, Delphine, Townsend, Ashley T., Bowie, Andrew R.

“…In large areas of the Southern Ocean, iron limits phytoplankton production. Although biologically mediated iron recycling has been studied for the higher…”
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Comparative population genomics reveals key barriers to dispersal in Southern Ocean penguins by Clucas, Gemma V., Younger, Jane L., Kao, Damian, Emmerson, Louise, Southwell, Colin, Wienecke, Barbara, Rogers, Alex D., Bost, Charles‐André, Miller, Gary D., Polito, Michael J., Lelliott, Patrick, Handley, Jonathan, Crofts, Sarah, Phillips, Richard A., Dunn, Michael J., Miller, Karen J., Hart, Tom

“…The mechanisms that determine patterns of species dispersal are important factors in the production and maintenance of biodiversity. Understanding these…”
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Phenology-based adjustments improve population estimates of Antarctic breeding seabirds: the case of Cape petrels in East Antarctica by Kliska, Kimberley, Southwell, Colin, Salton, Marcus, Williams, Richard, Emmerson, Louise

“…To monitor and conserve a species, it is crucial to understand the size and distribution of populations. For seabirds, population surveys are usually conducted…”
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Density can be misleading for low-density species: benefits of passive acoustic monitoring by Rogers, Tracey L, Ciaglia, Michaela B, Klinck, Holger, Southwell, Colin

“…Climate-induced changes may be more substantial within the marine environment, where following ecological change is logistically difficult, and typically…”
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Large-scale population assessment informs conservation management for seabirds in Antarctica and the Southern Ocean: A case study of Adélie penguins by Southwell, Colin, Emmerson, Louise, Takahashi, Akinori, Barbraud, Christophe, Delord, Karine, Weimerskirch, Henri

“…Antarctica and the Southern Ocean are increasingly affected by fisheries, climate changeand human presence. Antarctic seabirds are vulnerable to all these…”
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Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adélie penguins by McInnes, Julie C., Emmerson, Louise, Southwell, Colin, Faux, Cassandra, Jarman, Simon N.

“…As central place foragers, breeding penguins are restricted in foraging range by the need to return to the colony to feed chicks. Furthermore, breeding birds…”
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Marine distribution and habitat use by Snow Petrels Pagodroma nivea in East Antarctica throughout the non-breeding period by Viola, Benjamin, Wienecke, Barbara, Green, Cara-Paige, Corney, Stuart, Raymond, Ben, Southwell, Colin, Sumner, Michael D., Virtue, Patti, Wotherspoon, Simon, Emmerson, Louise

“…The relationships between flying Antarctic seabirds and their at-sea environments remain poorly understood, particularly outside of the breeding season…”
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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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Re-constructing historical Adélie penguin abundance estimates by retrospectively accounting for detection bias by Southwell, Colin, Emmerson, Louise, Newbery, Kym, McKinlay, John, Kerry, Knowles, Woehler, Eric, Ensor, Paul

“…Seabirds and other land-breeding marine predators are considered to be useful and practical indicators of the state of marine ecosystems because of their…”
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Environment‐triggered demographic changes cascade and compound to propel a dramatic decline of an Antarctic seabird metapopulation by Emmerson, Louise, Southwell, Colin

“…While seabirds are well‐known for making a living under some of the harshest conditions on the planet, their capacity to buffer against unfavourable conditions…”
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