A blind spot in climate change vulnerability assessments

Small-Lorenz, Stacy; Culp, Leah A.; Ryder, Thomas B.; Will, Tom; Marra, Peter P.

doi:10.1038/nclimate1810

Cited by 97 publications

(104 citation statements)

References 17 publications

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“…Understanding migratory connectivity patterns is a critical component to the conservation of migratory birds and to understanding the consequences of habitat loss and climate change on biodiversity [1,2]. By identifying a species' migratory geography, we can increase our knowledge of the factors that limit populations, and in which season(s) of their annual cycle the limitations occur [3,4].…”

Section: Introductionmentioning

confidence: 99%

Migratory connectivity of Golden-crowned Sparrows from two wintering regions in California

et al. 2016

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Knowledge of migratory connectivity is critical to understanding the consequences of habitat loss and climate change on migratory species. We used light-level geolocators to determine breeding locations and migratory routes of wintering Golden-crowned Sparrows (Zonotrichia atricapilla) in two regions of California, USA. Eight out of 9 birds tagged at coastal-wintering sites in Marin County went to breeding sites along the Gulf Coast of Alaska, while 7 out of 8 inland-wintering birds in Placer County migrated to interior sites in the Yukon, Northwest Territories, and British Columbia, Canada. Our estimate of the strength of migratory connectivity was relatively high (rm = 0.66). Coastal-wintering birds followed a coastal migration route while inland-wintering birds migrated inland. Coastalwintering birds migrated significantly farther than inland birds (3,624 km versus 2,442 km). Coastal birds traveled at a greater rate during spring migration (179 km/d) than did inland birds (118 km/d), but there was no statistical difference in the rate of fall migration (167 km/d and 111 km/d, respectively). Dates of arrival and departure, and duration of spring and fall migration, did not differ between groups, nor did return rates. Rates of return also did not differ between tagged and control birds. The distinct migration routes and breeding areas suggests that there may be more structuring in the migratory geography of the Golden-crowned Sparrow than in a simple panmictic population.

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Section: Introductionmentioning

confidence: 99%

Migratory connectivity of Golden-crowned Sparrows from two wintering regions in California

et al. 2016

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“…However, a growing body of literature demonstrates that these temporally and often geographically distinct periods of the annual cycle are inextricably linked (Harrison et al 2011). This bias in research towards studies focussing on the breeding season limits our understanding of the ecology of many species, and how individuals and populations are affected by major stressors such as rapid environmental change (Ådahl et al 2006, Small-Lorenz et al 2013.…”

Section: Introductionmentioning

confidence: 99%

Consistent variation in individual migration strategies of brown skuas

Krietsch¹,

Hahn²,

Kopp³

et al. 2017

Mar. Ecol. Prog. Ser.

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Seabirds show remarkable variability in migration strategies among individuals and populations. In this study, we analysed 47 migrations of 28 brown skuas Catharacta antarctica lonnbergi breeding on King George Island in the Maritime Antarctic. Brown skuas from this population used a large area during the non-breeding period north of 55°S, including parts of the Patagonian Shelf, Argentine Basin and South Brazil Shelf, areas which are characterised by high levels of marine productivity. However, individual birds utilised only a subset of these areas, adopting 1 of 4 distinct migration strategies to which they were highly faithful between years, and showed high repeatability in departure and arrival dates at the breeding ground. Although they spent the majority of the non-breeding season within a particular region, almost all individuals used the same area in the late winter, exploiting its seasonal peak in productivity. Overall, these results indicate consistent individual variation in migration strategies that may reflect a combination of genetic control and individual experience, but with considerable flexibility to shift distribution in response to prevailing environmental conditions. KEY WORDS: Catharacta antarctica lonnbergi · Seabird ecology · Light-level geolocation · Non-breeding distribution · Individual consistency · Ocean primary productivity · Migratory connectivity Contribution to the Theme Section 'Individual varability in seabird foraging and migration'

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“…There is increasing awareness of the potential for linkages between breeding and wintering ground conditions to affect migrant populations [5]. Carry-over effects can occur if wintering ground climate influences the condition of birds when they come to depart on spring migration, potentially altering arrival time on breeding grounds and affecting reproductive success [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Climatic effects on breeding grounds are more important drivers of breeding phenology in migrant birds than carry-over effects from wintering grounds

Ockendon

Leech²,

Pearce‐Higgins³

2013

Biol. Lett.

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Population ecologyClimatic effects on breeding grounds are more important drivers of breeding phenology in migrant birds than carryover effects from wintering grounds Nancy Ockendon, Dave Leech and James W. Pearce-Higgins British Trust for Ornithology, The Nunnery, Thetford, Norfolk IP24 2PU, UK Long-distance migrants may be particularly vulnerable to climate change on both wintering and breeding grounds. However, the relative importance of climatic variables at different stages of the annual cycle is poorly understood, even in well-studied Palaearctic migrant species. Using a national dataset spanning 46 years, we investigate the impact of wintering ground precipitation and breeding ground temperature on breeding phenology and clutch size of 19 UK migrants. Although both spring temperature and arid zone precipitation were significantly correlated with laying date, the former accounted for 3.5 times more inter-annual variation. Neither climate variable strongly affected clutch size. Thus, although carry-over effects had some impact, they were weaker drivers of reproductive traits than conditions on the breeding grounds.

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A blind spot in climate change vulnerability assessments

Cited by 97 publications

References 17 publications

Migratory connectivity of Golden-crowned Sparrows from two wintering regions in California

Migratory connectivity of Golden-crowned Sparrows from two wintering regions in California

Consistent variation in individual migration strategies of brown skuas

Climatic effects on breeding grounds are more important drivers of breeding phenology in migrant birds than carry-over effects from wintering grounds

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