Diet and foraging areas of Southern Ocean seabirds and their prey inferred from stable isotopes: review and case study of Wilsons storm-petrel

Quillfeldt, Petra; McGill, Rona A. R.; Furness, Robert W.

doi:10.3354/meps295295

Cited by 149 publications

(159 citation statements)

References 47 publications

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“…As in previous studies (Quillfeldt et al 2005, Cherel & Hobson 2007, recent data collated from the literature indicated a marked decrease in stable carbon isotope ratios in Southern Ocean predators with latitude (Appendices 1 & 2, Fig. 1).…”

Section: Breeding Season Distributionsupporting

confidence: 79%

“…Data analysis. For the literature survey (Appendices 1 & 2 available at: www.int-res.com/articles/ suppl/m373p137_app.pdf), we included stable isotope data of pelagic prey species as well as seabirds and seals of the Southern Ocean, which are updated from Quillfeldt et al (2005). Particularly for seabirds and seals, there has been a huge increase in the available information since the last review.…”

Section: Methodsmentioning

confidence: 99%

“…This would be explained by migration into Antarctic waters during moulting as indicated by the low δ 13 C values of feathers grown in winter, which is best comparable to birds breeding in the South Shetland Islands (62°S, Fig. 1; Quillfeldt et al 2005). Thinbilled prions from the Kerguelen Islands showed similarly low δ 13 C values .…”

Section: Wintering Distributionmentioning

confidence: 97%

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Stable isotope analysis reveals sexual and environmental variability and individual consistency in foraging of thin-billed prions

Quillfeldt¹,

McGill²,

Masello³

et al. 2008

Mar. Ecol. Prog. Ser.

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Section: Breeding Season Distributionsupporting

confidence: 79%

Section: Methodsmentioning

confidence: 99%

Section: Wintering Distributionmentioning

confidence: 97%

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Stable isotope analysis reveals sexual and environmental variability and individual consistency in foraging of thin-billed prions

Quillfeldt¹,

McGill²,

Masello³

et al. 2008

Mar. Ecol. Prog. Ser.

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“…Large-scale changes in latitude (e.g. Quillfeldt et al 2005Quillfeldt et al , 2008 can be superimposed on smaller-scale changes like nearshore vs. offshore habitats or benthic vs. pelagic food webs. Furthermore, a change in δ 13 C can indicate a switch be tween isotopically distinctive prey types that can migrate to a foraging habitat.…”

Section: Methodsmentioning

confidence: 99%

Flexible foraging behaviour of a sexually dimorphic seabird: large males do not always dive deep

Quillfeldt¹,

Schroff²,

Noordwijk³

et al. 2011

Mar. Ecol. Prog. Ser.

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Sex differences in foraging behaviour have been explained by size dimorphism and/or avoidance of inter-sexual competition for depletable resources. To distinguish between these 2 hypotheses, we examined how intrinsic factors (sex-related differences) and extrinsic factors (year differences) shape the foraging behaviour of size-dimorphic imperial shags Phalacrocorax atriceps albiventer breeding at New Island, Falkland Islands/Islas Malvinas. We deployed time-depth and compass loggers to male and female imperial shags over 3 consecutive chick-feeding seasons. Males and females partly overlapped in coastal foraging areas, which were used mainly for benthic diving. Males additionally used offshore areas over deep water for shallow pelagic diving, suggesting that spatial segregation is involved in the avoidance of inter-sexual competition for food. Stable isotope data suggested differences in prey composition between the sexes, with consistently higher trophic levels in males, as expected for their larger size. Males were 27% heavier than females and reached greater maximum dive depths (98.9 ± 5.3 m) than females (54.1 ± 2.9 m). However, contrary to predictions based on body size dimorphism, the median dive depths of males were similar to those of females. While females used mainly benthic diving, males were more flexible in their benthic and pelagic foraging behaviour. Females also carried out more dives per day in all years, and deeper and longer dives than males in one year. As dive parameters differed strongly among the years, our results suggest that body size dimorphism and the avoidance of inter-sexual competition for food are involved in the evolution of sex-related differences in foraging in this species.

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“…In contrast, the lower δ 15 N of caledonica (11.0 to 14.0‰) suggests 387 the additional consumption of prey from lower trophic levels, such as cephalopods or marine 388 crustaceans (δ 15 N of 8.1 to 10.2‰, and 3.6 to 6.5‰, ) (Quillfeldt et al 2005). This interpretation 389 assumes there are no differences in regional baselines for δ 15 N, which is supported by the similarity in 390 δ…”

Section: Pterodroma Externa and Pterodroma Sandwichensis (Ballance Ementioning

confidence: 99%

Niche partitioning by three Pterodroma petrel species during non-breeding in the equatorial Pacific Ocean

Rayner¹,

Carlile²,

Priddel³

et al. 2016

Mar. Ecol. Prog. Ser.

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43Niche divergence is expected for species that compete for shared resources, including migrants that 44 occupy similar regions during the non-breeding season. Studies of temperate seabirds indicate that 45 both spatial and behavioural segregation can be important mechanisms for reducing competition, but 46there have been few investigations of resource partitioning by closely-related taxa in low productivity, 47 tropical environments. We investigated niche partitioning in three gadfly petrel taxa, Pterodroma 48 leucoptera leucoptera (n = 22) , P. leucoptera caledonica (n = 7) and P. pycrofti (n = 12) during their 49 non-breeding season in the eastern tropical Pacific Ocean by combining tracking data from 50 geolocator-immersion loggers with remotely-sensed environmental data in species distribution models 51 (SDMs), and by comparing feather stable isotope ratios. The three taxa showed spatial partitioning; 52 two foraged in the North Equatorial Counter Current and one in the South Equatorial Current. This 53 reflected differences in their realised habitat niches, with significant taxon-specific responses to 54 thermocline depth, sea surface temperature and bathymetry. There were also differences among taxa 55 in activity patterns, and all birds spent a much larger proportion of time in flight at night than during 56 the day, suggesting predominance of nocturnal foraging behaviour. Comparison of stable isotope 57 ratios in feathers suggests that P. leucoptera leucoptera and P. pycrofti mainly consume vertically-58 migrating mesopelagic fishes, whereas the diet of P. leucoptera caledonica also include some lower 59

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Diet and foraging areas of Southern Ocean seabirds and their prey inferred from stable isotopes: review and case study of Wilsons storm-petrel

Cited by 149 publications

References 47 publications

Stable isotope analysis reveals sexual and environmental variability and individual consistency in foraging of thin-billed prions

Stable isotope analysis reveals sexual and environmental variability and individual consistency in foraging of thin-billed prions

Flexible foraging behaviour of a sexually dimorphic seabird: large males do not always dive deep

Niche partitioning by three Pterodroma petrel species during non-breeding in the equatorial Pacific Ocean

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Diet and foraging areas of Southern Ocean seabirds and their prey inferred from stable isotopes: review and case study of Wilsons storm-petrel

Cited by 149 publications

References 47 publications

Stable isotope analysis reveals sexual and environmental variability and individual consistency in foraging of thin-billed prions

Stable isotope analysis reveals sexual and environmental variability and individual consistency in foraging of thin-billed prions

Flexible foraging behaviour of a sexually dimorphic seabird: large males do not always dive deep

Niche partitioning by three Pterodroma petrel species during non-breeding in the equatorial Pacific Ocean

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Diet and foraging areas of Southern Ocean seabirds and their prey inferred from stable isotopes: review and case study of Wilsons storm-petrel