Tufted puffin reproduction reveals ocean climate variability

Gjerdrum, Carina; Vallée, Anne M. J.; Clair, Colleen Cassady St.; Bertram, Douglas F.; Ryder, John L.; Blackburn, Gwylim S.

doi:10.1073/pnas.1133383100

Cited by 134 publications

(123 citation statements)

References 40 publications

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“…of the 12 major taxa, copepods were by far the dominant group in 1966 (%I ri = 97.0) and 1968 (99.9), but not in 1967 (21.5), when cladocerans (33.1), larvaceans (18.0), and teleosts (25.7) also were common (figure 2) ( (1966, 1967, and 1968). (Beacham 1986;Gjerdrum et al 2003), so there is need for a thorough understanding of its trophic relations. in the protected inner waters of the Salish Sea, 12 major prey taxa were found in its diet: 8 crustacean groups, plus trematodes, molluscs, larvaceans, and teleosts.…”

Section: Methodsmentioning

confidence: 99%

Diet of the Pacific Sand Lance (<em>Ammodytes hexapterus</em>) in the Salish Sea, British Columbia, in the 1960s

Hipfner

Galbraith

2014

Can Field Nat

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The diet of the Pacific Sand Lance (Ammodytes hexapterus) was quantified from the stomach contents of 115 Pacific Sand Lance caught in the Strait of Georgia and Saanich Inlet (Vancouver Island) in the Salish Sea, British Columbia, in the spring and summer of 1966, in the Strait of Georgia in the spring and summer of 1967, and in the Strait of Georgia and Saanich Inlet in the spring and summer of 1968. There were 12 major taxa of prey in diets, 8 of which were Crustacea. Based on an index of relative importance, copepods were the dominant prey in 1966 and 1968, but not in 1967, when cladocerans, larvaceans, and teleosts also were common. The copepods Pseudocalanus spp. and Calanus marshallae were the only taxa to appear in diets in all three years. Pseudocalanus dominated the copepod component of diets in 1966, when sampling occurred in July; unspecified copepod nauplii (an early larval stage) were dominant in 1967 and 1968, when sampling occurred earlier (April to June). With the profound changes that have occurred in the Salish Sea over recent decades, these data can serve as a baseline for comparison.

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Section: Methodsmentioning

confidence: 99%

Diet of the Pacific Sand Lance (<em>Ammodytes hexapterus</em>) in the Salish Sea, British Columbia, in the 1960s

Hipfner

Galbraith

2014

Can Field Nat

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“…Coincident with the strong La Nina event in 1999, zooplankton biomass increased and the community composition changed within coastal regions of British Columbia , Mackas & Galbraith 2002, Zamon & Welch 2005. In 1999, the reproductive performance of both planktivorous (Cassin's auklet) and piscivorous seabirds (rhinoceros auklet Cerorhinca monocerata and tufted puffin Fratercula cirrhata) on Triangle Island, the largest seabird colony in western Canada, improved dramatically compared to previous years in the 1990s (Bertram et al 2001;Hedd et al 2002;Gjerdrum et al 2003). The trend toward improved breeding performance for these species continued through 2001.…”

Section: Introductionmentioning

confidence: 99%

Effects of interdecadal climate variability on marine trophic interactions: rhinoceros auklets and their fish prey

Hedd

Bertram²,

Ryder³

et al. 2006

Mar. Ecol. Prog. Ser.

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This paper presents time-series information on the diet composition and breeding performance of rhinoceros auklet Cerorhinca monocerata at Triangle Island, British Columbia, Canada, during 15 breeding seasons between 1976 and 2001. Three shifts in ocean climate occurred within British Columbia during this period (1976-77, 1989-90, 1998-99), allowing us to evaluate associations between marine environmental conditions and the reproduction of this piscivorous seabird. Lipid-rich Pacific sand lance Ammodytes hexapterus was the single most important prey delivered to chicks across years (15 yr avg. 38%; annual range 4 to 86%). Interannual variability was high, but in general breeding performance was strongest when 0+ sand lance predominated chick diets. Other annually important prey taxa included Pacific saury Cololabis saira, juvenile rockfishes Sebastes spp., Pacific herring Clupea pallasi and juvenile salmonid Oncorhynchus spp. The dietary importance of these prey also varied seasonally. Marine environmental conditions (evaluated using sea surface temperatures, SSTs) were clearly associated with reproduction of rhinoceros auklet, as both occurrence of sand lance in the diet and the growth rates of chicks diminished as spring SSTs increased (r = -0.680, p < 0.01, and r = -0.697, p < 0.01, respectively). We hypothesized that recruitment to local sand lance populations was temperature dependent. The strong negative relationship between dietary occurrence of 0+ sand lance and spring SST (r = -0.560, p < 0.05), coupled with the lack of a similar relationship for 1+ sand lance (p > 0.20), was consistent with the temperature-dependent recruitment hypothesis. Our data suggest that SSTs could interact with population age structure to affect the recruitment dynamics of Pacific sand lance. We estimated the annual dietary importance of 0+ sand lance to rhinoceros auklets using spring SST and the importance of 0+ sand lance in the diet the previous year.

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“…Climate change, however, has varied consequences for animal species: higher mortality in sheep (Hallett et al, 2004), variation in reproductive performance in marine birds (Croxall et al, 2002;Gjerdrum et al, 2003), changes in abundance, mortality and distribution of fishes (i.e. Finney et al, 2000;McFarlane et al, 2000, MacKenzie & Koster 2004.…”

Section: Introductionmentioning

confidence: 99%

Impact of climate change and human-mediated introgression on southern European Atlantic salmon populations

Hórreo

Machado‐Schiaffino

Ayllón

et al. 2010

Global Change Biology

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This study focuses on temporal changes in Atlantic salmon (Salmo salar) populations from the vulnerable periphery of the species range (northern Spain). Using microsatellite markers to assess population structuring and introgression of exogenous genes in four different temporal samples collected across 20 years, we have determined the relative weights of climate and stocking practices in shaping contemporary regional population genetic patterns. Climate, represented by the North Atlantic Oscillation Index, was identified as the main factor for determining the level of population genetic differentiation. Populations within the region have become homogenized through gene flow enhanced by straying of adult salmon from natal rivers and subsequent interchange of genes among rivers due to warmer temperatures. At the same time, and in line with documented changes in stock transfer strategies, evidence of genetic introgression from past stock transfers has decreased throughout the study period, becoming a secondary factor in erasing population structuring. The ability to disentangle the effects of climatic changes and anthropogenic factors (fisheries management practices) is essential for effective long-term conservation of this iconic species. We emphasize the importance of evaluating all factors which may be linked to stocking practices in vulnerable species, particularly those sensitive to climate change.

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Tufted puffin reproduction reveals ocean climate variability

Cited by 134 publications

References 40 publications

Diet of the Pacific Sand Lance (<em>Ammodytes hexapterus</em>) in the Salish Sea, British Columbia, in the 1960s

Diet of the Pacific Sand Lance (<em>Ammodytes hexapterus</em>) in the Salish Sea, British Columbia, in the 1960s

Effects of interdecadal climate variability on marine trophic interactions: rhinoceros auklets and their fish prey

Impact of climate change and human-mediated introgression on southern European Atlantic salmon populations

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