Climate-forced seasonal mismatch between the hatching of rhinoceros auklets and the availability of anchovy
Predator-prey relationships are key to understanding complex marine ecosystem dynamics. The match-mismatch hypothesis posits that predators time energy-intensive activities, such as reproduction, to periods of high food availability. However, predators may be constrained by various ecological or phy...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/40079 2023-05-15T15:16:00+02:00 Climate-forced seasonal mismatch between the hatching of rhinoceros auklets and the availability of anchovy Watanuki, Yutaka Ito, Motohiro Deguchi, Tomohiro Minobe, Shoshiro http://hdl.handle.net/2115/40079 https://doi.org/10.3354/meps08264 eng eng Inter-Research http://hdl.handle.net/2115/40079 Marine Ecology Progress Series, 393: 259-271 http://dx.doi.org/10.3354/meps08264 © 2009 Inter-Research Climate change Match-mismatch Seabirds Atmospheric pressure systems Reproductive consequences 468 article fthokunivhus https://doi.org/10.3354/meps08264 2022-11-18T01:01:56Z Predator-prey relationships are key to understanding complex marine ecosystem dynamics. The match-mismatch hypothesis posits that predators time energy-intensive activities, such as reproduction, to periods of high food availability. However, predators may be constrained by various ecological or physiological processes, leading to mistimed activities relative to prey availability. We investigated inter-annual variation in the timing of breeding for a piscivorous seabird (rhinoceros auklet Cerorhinca monocerata) in relation to availability of a preferred prey item, Japanese anchovy Engraulis japonicus, using data collected over 18 yr between 1984 and 2006 at Teuri Island in the northern Japan Sea. Our primary goals were (1) to identify the climatic factors that affect the seabirds' timing of breeding, proxied by hatching date, and anchovy seasonal availability, and (2) to quantify the fitness effects of predator-prey matches and mismatches relative to climate variability. Hatching date was later in years with lower spring air temperatures. Auklets switched their feeding from sandlance and juvenile greenling to anchovy when it was transported into the birds' foraging range with the seasonal northern expansion of 13 degrees C warm water from the south. The mismatch between hatching date and the period of high anchovy availability was most pronounced when spring air temperatures were warm, and there was a weak Tsushima (warm) Current. Spring air temperature was influenced by spring atmospheric pressure gradients in the Arctic and northern Eurasia, which drive the east Asian winter monsoon, whereas timing of the Tsushima warm water expansion was influenced by winter surface pressures over the western North Pacific. Chick growth rates, mass at fledging, and overall fledging success (fitness) were lower during mismatch years when the auklets fed less on anchovy. The auklets were constrained to adjust hatching date because the seasonal mismatch appeared to be driven by independent and unpredictable surface pressure ... Article in Journal/Newspaper Arctic Climate change Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Arctic Pacific Marine Ecology Progress Series 393 259 271 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Climate change Match-mismatch Seabirds Atmospheric pressure systems Reproductive consequences 468 |
spellingShingle |
Climate change Match-mismatch Seabirds Atmospheric pressure systems Reproductive consequences 468 Watanuki, Yutaka Ito, Motohiro Deguchi, Tomohiro Minobe, Shoshiro Climate-forced seasonal mismatch between the hatching of rhinoceros auklets and the availability of anchovy |
topic_facet |
Climate change Match-mismatch Seabirds Atmospheric pressure systems Reproductive consequences 468 |
description |
Predator-prey relationships are key to understanding complex marine ecosystem dynamics. The match-mismatch hypothesis posits that predators time energy-intensive activities, such as reproduction, to periods of high food availability. However, predators may be constrained by various ecological or physiological processes, leading to mistimed activities relative to prey availability. We investigated inter-annual variation in the timing of breeding for a piscivorous seabird (rhinoceros auklet Cerorhinca monocerata) in relation to availability of a preferred prey item, Japanese anchovy Engraulis japonicus, using data collected over 18 yr between 1984 and 2006 at Teuri Island in the northern Japan Sea. Our primary goals were (1) to identify the climatic factors that affect the seabirds' timing of breeding, proxied by hatching date, and anchovy seasonal availability, and (2) to quantify the fitness effects of predator-prey matches and mismatches relative to climate variability. Hatching date was later in years with lower spring air temperatures. Auklets switched their feeding from sandlance and juvenile greenling to anchovy when it was transported into the birds' foraging range with the seasonal northern expansion of 13 degrees C warm water from the south. The mismatch between hatching date and the period of high anchovy availability was most pronounced when spring air temperatures were warm, and there was a weak Tsushima (warm) Current. Spring air temperature was influenced by spring atmospheric pressure gradients in the Arctic and northern Eurasia, which drive the east Asian winter monsoon, whereas timing of the Tsushima warm water expansion was influenced by winter surface pressures over the western North Pacific. Chick growth rates, mass at fledging, and overall fledging success (fitness) were lower during mismatch years when the auklets fed less on anchovy. The auklets were constrained to adjust hatching date because the seasonal mismatch appeared to be driven by independent and unpredictable surface pressure ... |
format |
Article in Journal/Newspaper |
author |
Watanuki, Yutaka Ito, Motohiro Deguchi, Tomohiro Minobe, Shoshiro |
author_facet |
Watanuki, Yutaka Ito, Motohiro Deguchi, Tomohiro Minobe, Shoshiro |
author_sort |
Watanuki, Yutaka |
title |
Climate-forced seasonal mismatch between the hatching of rhinoceros auklets and the availability of anchovy |
title_short |
Climate-forced seasonal mismatch between the hatching of rhinoceros auklets and the availability of anchovy |
title_full |
Climate-forced seasonal mismatch between the hatching of rhinoceros auklets and the availability of anchovy |
title_fullStr |
Climate-forced seasonal mismatch between the hatching of rhinoceros auklets and the availability of anchovy |
title_full_unstemmed |
Climate-forced seasonal mismatch between the hatching of rhinoceros auklets and the availability of anchovy |
title_sort |
climate-forced seasonal mismatch between the hatching of rhinoceros auklets and the availability of anchovy |
publisher |
Inter-Research |
url |
http://hdl.handle.net/2115/40079 https://doi.org/10.3354/meps08264 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_relation |
http://hdl.handle.net/2115/40079 Marine Ecology Progress Series, 393: 259-271 http://dx.doi.org/10.3354/meps08264 |
op_rights |
© 2009 Inter-Research |
op_doi |
https://doi.org/10.3354/meps08264 |
container_title |
Marine Ecology Progress Series |
container_volume |
393 |
container_start_page |
259 |
op_container_end_page |
271 |
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1766346324628733952 |