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DOI | 10.1038/s41598-018-35901-7 |
Central place foragers select ocean surface convergent features despite differing foraging strategies | |
Oliver, Matthew J.1; Kohut, Josh T.2; Bernard, Kim3; Fraser, William4; Winsor, Peter5; Statscewich, Hank5; Fredj, Erick6; Cimino, Megan7; Patterson-Fraser, Donna4; Carvalho, Filipa8 | |
发表日期 | 2019 |
ISSN | 2045-2322 |
卷号 | 9 |
英文摘要 | Discovering the predictors of foraging locations can be challenging, and is often the critical missing piece for interpreting the ecological significance of observed movement patterns of predators. This is especially true in dynamic coastal marine systems, where planktonic food resources are diffuse and must be either physically or biologically concentrated to support upper trophic levels. In the Western Antarctic Peninsula, recent climate change has created new foraging sympatry between Adelie (Pygoscelis adeliae) and gentoo (P. papua) penguins in a known biological hotspot near Palmer Deep canyon. We used this recent sympatry as an opportunity to investigate how dynamic local oceanographic features affect aspects of the foraging ecology of these two species. Simulated particle trajectories from measured surface currents were used to investigate the co-occurrence of convergent ocean features and penguin foraging locations. Adelie penguin diving activity was restricted to the upper mixed layer, while gentoo penguins often foraged much deeper than the mixed layer, suggesting that Adelie penguins may be more responsive to dynamic surface convergent features compared to gentoo penguins. We found that, despite large differences in diving and foraging behavior, both shallow-diving Adelie and deeper-diving gentoo penguins strongly selected for surface convergent features. Furthermore, there was no difference in selectivity for shallow-versus deep-diving gentoo penguins. Our results suggest that these two mesopredators are selecting surface convergent features, however, how these surface signals are related to subsurface prey fields is unknown. |
WOS研究方向 | Science & Technology - Other Topics |
来源期刊 | SCIENTIFIC REPORTS |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/92166 |
作者单位 | 1.Univ Delaware, Coll Earth Ocean & Environm, 700 Pilottown Rd, Lewes, DE 19958 USA; 2.Rutgers State Univ, Dept Marine & Coastal Sci, 71 Dudley Rd, New Brunswick, NJ 08901 USA; 3.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, 104 CEOAS Admin Bldg, Corvallis, OR 97330 USA; 4.Polar Oceans Res Grp, POB 368, Sheridan, MT 59749 USA; 5.Univ Alaska, Coll Fisheries & Ocean Sci, 905 Koyukuk Dr Suite 245 ONeill Bldg, Fairbanks, AK 99775 USA; 6.Jerusalem Coll Technol, Dept Comp Sci, 21 Havaad Haleumi St,POB 16031, IL-91160 Jerusalem, Israel; 7.Univ Calif San Diego, Scripps Inst Oceanog, Coastal Observing R&D Ctr, 9500 Gilman Dr 0214, La Jolla, CA 92093 USA; 8.Natl Oceanog Ctr, European Way, Southampton SO14 3ZH, Hants, England |
推荐引用方式 GB/T 7714 | Oliver, Matthew J.,Kohut, Josh T.,Bernard, Kim,et al. Central place foragers select ocean surface convergent features despite differing foraging strategies[J],2019,9. |
APA | Oliver, Matthew J..,Kohut, Josh T..,Bernard, Kim.,Fraser, William.,Winsor, Peter.,...&Carvalho, Filipa.(2019).Central place foragers select ocean surface convergent features despite differing foraging strategies.SCIENTIFIC REPORTS,9. |
MLA | Oliver, Matthew J.,et al."Central place foragers select ocean surface convergent features despite differing foraging strategies".SCIENTIFIC REPORTS 9(2019). |
条目包含的文件 | 条目无相关文件。 |
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