Annual and seasonal movements of migrating short-tailed shearwaters reflect environmental variation in sub-Arctic and Arctic waters

Yamamoto, Takashi; Hoshina, Kenji; Nishizawa, Bungo; Meathrel, Catherine E.; Phillips, Richard A.; Watanuki, Yutaka

doi:10.1007/s00227-014-2589-1

Cited by 21 publications

(12 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, a warmer shelf would provide them with a larger area of suitable habitat (Ciannelli and Bailey, 2005;Kotwicki et al, 2005). In addition, distribution and availability of euphausiids and copepods, the prey species for juvenile walleye pollock (Schabetsberger et al, 2000;Ciannelli et al, 2002), likely change in relation to interannual differences in water temperatures in the shelf region (Smith, 1991;Ohashi et al, 2013;Yamamoto et al, 2015). Hence, we assume that the abundance/availability of pollock on the shelf was probably relatively higher in 2014 (the year of warmer SSTs and earlier sea-ice retreat) compared to 2013 (the year of cooler SSTs and later sea-ice retreat).…”

Section: Discussionmentioning

confidence: 99%

“…shown to affect the ecosystem, including the seasonality and biomass of primary production, metabolic rates, distribution, and abundance of consumers, and changes in pelagic-benthic coupling (Grebmeier et al, 2006;Mueter and Litzow, 2008;Hunt et al, 2011;Wassmann et al, 2011;Dorresteijn et al, 2012). The Bering Sea is a transition region between Arctic and sub-Arctic seas, and, hence, physical and biological changes in this region may also influence the extent of sea-ice cover and species abundance and composition in the adjacent Arctic Sea (i.e., the Chukchi Sea) (Shimada et al, 2006;Matsuno et al, 2012;Yamamoto et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Differential responses of seabirds to environmental variability over 2 years in the continental shelf and oceanic habitats of southeastern Bering Sea

et al. 2016

Self Cite

View full text Add to dashboard Cite

Abstract. Seasonal sea-ice cover has been decreasing in the southeastern Bering Sea shelf, which might affect ecosystem dynamics and availability of food resources to marine top predators breeding in the region. In this study, we investigated the foraging responses of two seabird species, surface-foraging red-legged kittiwakes Rissa brevirostris (hereafter, RLKI) and pursuit-diving foraging thick-billed murres Uria lomvia (TBMU) to different marine environmental conditions over 2 years. At-sea distributions of RLKI and TBMU breeding on St. George Island, the largest seabird colony in the region, were recorded using GPS loggers, and blood samples were taken to examine their physiological condition and isotopic foraging niche in a given year. Between the study years, winter ice retreated earlier and summer water temperatures were relatively warmer in 2014 compared to those in 2013. RLKI foraging occurred mostly over the oceanic basin in both years. TBMU, however, foraged mostly over the shelf but showed a relatively higher use of the shelf break and oceanic basin in 2013. The foraging distances from the colony peaked at 250–300 km in 2013 and bimodally at 150–250 and 300–350 km in 2014 for RLKI and tended to be farther in 2013 compared to those in 2014 for TBMU. Plasma levels of corticosterone did not differ between the years in RLKI but differed in TBMU, showing higher levels of physiological stress incurred by murres in 2013, the year of relatively cooler sea surface temperatures with later sea-ice retreat. δ13N (a proxy of trophic level of prey) did not differ between the years in either RLKI or TBMU. These results suggest that the response of ecosystem dynamics to climate variability in the southeastern Bering Sea may differ between the ocean basin and continental shelf regions, which, in turn, may generate differential responses in seabirds relying on those habitats for foraging.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Differential responses of seabirds to environmental variability over 2 years in the continental shelf and oceanic habitats of southeastern Bering Sea

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…them with a larger area of suitable habitat (Kotwicki et al, 2005;Ciannelli and Bailey, 2005). In addition, distribution and availability of euphausiids and copepods, the prey species for juvenile walleye pollock (Schabetsberger et al, 2000;Ciannelli et al, 2002), likely change in relation to inter-annual differences in water temperatures in the shelf region (Smith, 1991;Ohashi et al, 2013;Yamamoto et al, 2015). Hence, we assume that the abundance/availability of pollock on the shelf was probably relatively higher in 2014, the warmer year.…”

Section: Discussionmentioning

confidence: 99%

Differential responses of seabirds to inter-annual environmental change in the continental shelf and oceanic habitats of southeastern Bering Sea

Yamamoto

Kokubun

Kikuchi

et al. 2015

Preprint

View full text Add to dashboard Cite

Abstract. Seasonal sea-ice cover has been decreasing in the southeastern Bering Sea shelf, which might affect ecosystem dynamics and availability of food resources to marine top predators breeding in the region. In this study, we investigated the foraging responses of two seabird species, surface-foraging red-legged kittiwakes Rissa brevirostris (hereafter, RLKI) and pursuit-diving foraging thick-billed murres Uria lomvia (TBMU) to the inter-annual change in environmental conditions. Between the study years, winter ice retreated earlier and summer water temperatures were warmer in 2014 compared to those in 2013. At-sea distributions of RLKI and TBMU breeding on St. George Island, the largest seabird colony in the region, were recorded using GPS loggers, and blood samples were taken to examine their physiological condition and isotopic foraging niche in a given year. RLKI foraging occurred mostly over the oceanic basin in both years. TBMU, however, foraged mostly over the shelf, but showed a relatively higher use of the shelf break and oceanic basin in the colder year, 2013. The foraging distances from the colony peaked at 250–300 km in 2013 and, bimodally, at 150–250 and 300–350 km in 2014 for RLKI, and tended to be farther in 2013 compared to those in 2014 for TBMU. Plasma levels of corticosterone did not differ between years in RLKI, but differed in TBMU, showing higher levels of physiological stress incurred by murres during the colder year, 2013. δ13N (a proxy of trophic level of prey) did not differ between the years in either RLKI or TBMU, while δ13C (a proxy of prey origin) were lower in 2014 than in 2013 in both species, suggesting possible differences in influx of oceanic prey items into foraging areas. These results suggest that the response of ecosystem dynamics to climate variability in the southeast Bering Sea may differ between the ocean basin and continental shelf regions, which, in turn, may generate differential responses in seabirds relying on those habitats for foraging.

show abstract

“…Recently, increasing availability of species distribution data together with broadscale remote sensing data has resulted in a rapid growth of research using species distribution models (i.e., habitat modeling; Guisan and Zimmermann 2000, Manly et al 2002, Franklin 2009, Peterson et al 2011, and it has advanced quickly in the past fifteen years particularly for mobile marine predators (Redfern et al 2006, Tremblay et al 2009, Wakefield et al 2009, Ž ydelis et al 2011. Species distribution modeling has also been termed habitat modeling when trying to understand the factors that influence habitat choice, particularly for highly mobile species such as seabirds (Ž ydelis et al 2011, Catry et al 2013b, Yamamoto et al 2015. Habitat modeling is a powerful tool because it can be used to estimate current distribution ranges of a species and relationships among occurrence or behavior and environmental covariates, and using species-environment relationships to predict responses to current and future environmental conditions (Elith and Leathwick 2009, Nur et al 2011, Oppel et al 2012, Hazen et al 2013a, as significant effects of global climate change (e.g., range shifts) have already been observed for a variety of ecosystems (review by Walther et al 2002, Parmesan and Yohe 2003, Burrows et al 2011, Pinsky et al 2013.…”

Section: Introductionmentioning

confidence: 99%

Statistical integration of tracking and vessel survey data to incorporate life history differences in habitat models

Yamamoto

Watanuki

Hazen

et al. 2015

Ecological Applications

Self Cite

View full text Add to dashboard Cite

Habitat use is often examined at a species or population level, but patterns likely differ within a species, as a function of the sex, breeding colony, and current breeding status of individuals. Hence, within-species differences should be considered in habitat models when analyzing and predicting species distributions, such as predicted responses to expected climate change scenarios. Also, species' distribution data obtained by different methods (vessel-survey and individual tracking) are often analyzed separately rather than integrated to improve predictions. Here, we eventually fit generalized additive models for Streaked Shearwaters Calonectris leuconelas using tracking data from two different breeding colonies in the Northwestern Pacific and visual observer data collected during a research cruise off the coast of western Japan. The tracking-based models showed differences among patterns of relative density distribution as a function of life history category (colony, sex, and breeding conditions). The integrated tracking-based and vessel-based bird count model incorporated ecological states rather than predicting a single surface for the entire species. This study highlights both the importance of including ecological and life history data and integrating multiple data types (tag-based tracking and vessel count) when examining species-environment relationships, ultimately advancing the capabilities of species distribution models.

show abstract

Annual and seasonal movements of migrating short-tailed shearwaters reflect environmental variation in sub-Arctic and Arctic waters

Cited by 21 publications

References 80 publications

Differential responses of seabirds to environmental variability over 2 years in the continental shelf and oceanic habitats of southeastern Bering Sea

Differential responses of seabirds to environmental variability over 2 years in the continental shelf and oceanic habitats of southeastern Bering Sea

Differential responses of seabirds to inter-annual environmental change in the continental shelf and oceanic habitats of southeastern Bering Sea

Statistical integration of tracking and vessel survey data to incorporate life history differences in habitat models

Contact Info

Product

Resources

About