Earlier spring staging in Iceland amongst Greenland White-fronted Geese Anser albifrons flavirostris achieved without cost to refuelling rates

Fox, Anthony D.; Boyd, Hugh; Walsh, Alyn; Stroud, David A.; Nyeland, Jens; Cromie, Ruth

doi:10.1007/s10750-012-1174-1

Cited by 9 publications

(6 citation statements)

References 19 publications

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“…This likely indicates that more time spent foraging is related to greater resource reserves for breeding once geese arrive in the Arctic. We hypothesize that the negative relationship in probability of deferral and energy expenditure could be from geese meeting their energetic requirements and loafing in Iceland until moving to Greenland (Fox et al 2012 ), and any birds that are still moving and foraging heavily have likely not acquired sufficient resources to breed. The increase in energy expenditure associated with higher deferral rates in midcontinent geese could be a result of disturbance preventing geese from obtaining necessary resources due to increased flight during stopovers (Béchet et al 2004 ).…”

Section: Discussionmentioning

confidence: 99%

Time-varying effects of local weather on behavior and probability of breeding deferral in two Arctic-nesting goose populations

et al. 2022

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Arctic-nesting geese face energetic challenges during spring migration, including ecological barriers and weather conditions (e.g., precipitation and temperature), which in long-lived species can lead to a trade-off to defer reproduction in favor of greater survival. We used GPS location and acceleration data collected from 35 greater white-fronted geese of the North American midcontinent and Greenland populations at spring migration stopovers, and novel applications of Bayesian dynamic linear models to test daily effects of minimum temperature and precipitation on energy expenditure (i.e., overall dynamic body acceleration, ODBA) and proportion of time spent feeding (PTF), then examined the daily and additive importance of ODBA and PTF on probability of breeding deferral using stochastic antecedent models. We expected distinct responses in behavior and probability of breeding deferral between and within populations due to differences in stopover area availability. Time-varying coefficients of weather conditions were variable between ODBA and PTF, and often did not show consistent patterns among birds, indicating plasticity in how individuals respond to conditions. An increase in antecedent ODBA was associated with a slightly increased probability of deferral in midcontinent geese but not Greenland geese. Probability of deferral decreased with increased PTF in both populations. We did not detect any differentially important time periods. These results suggest either that movements and behavior throughout spring migration do not explain breeding deferral or that ecological linkages between bird decisions during spring and subsequent breeding deferral were different between populations and across migration but occurred at different time scales than those we examined.

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Section: Discussionmentioning

confidence: 99%

Time-varying effects of local weather on behavior and probability of breeding deferral in two Arctic-nesting goose populations

et al. 2022

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“…Some species show earlier departure dates today than in the past, but spend more time at migration stopovers. Consequently, arrival dates at the breeding grounds have not changed despite the fact that northern areas are experiencing faster rates of relative warming compared to those further south (Bauer et al 2008, Fox et al 2012).…”

Section: Ducks and Climate Change: What Do We Know?mentioning

confidence: 99%

“…Advanced migration phenology may result from milder winter conditions reducing thermoregulatory challenges and/or enhancing food resources, enabling earlier acquisition of optimal body reserves which allows early departure (e.g. Bridge et al 2010, Fox & Walsh 2012, Fox et al 2012). Fouquet et al (2009) showed that the first greylag goose Anser anser migratory flights in western France were recorded three weeks earlier in the mid‐2000s than in the 1980s, while Greenland white‐fronted geese Anser albifrons flavirostris departed 15 days earlier in 2007 than in 1993 (Fox & Walsh 2012).…”

Section: Ducks and Climate Change: What Do We Know?mentioning

confidence: 99%

Effects of climate change on European ducks: what do we know and what do we need to know?

Guillemain

Pöysä²,

Fox³

et al. 2013

Wildlife Biology

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The consequences of climate change for bird populations have received much attention in recent decades, especially amongst cavity-nesting songbirds, yet little has been written on ducks (Anatidae) despite these being major elements of wetland diversity and important quarry species. This paper reviews the major known consequences of climate change for birds in general, and relates these to the limited information available specifically for ducks. Climate change can influence migration distance and phenology, potentially affecting patterns of mortality, as well as distribution and reproductive success in ducks. Studies addressing effects of climate change are, however, restricted to very few duck species, including mallard Anas platyrhynchos and common eider Somateria mollissima. Shifts in winter duck distributions have been observed, whereas the mismatch hypothesis (mistiming between the periods of peak energy requirements for young and the peak of seasonal food availability) has received limited support with regard to ducks. We propose a range of monitoring initiatives, including population surveys, breeding success monitoring schemes and individual duck marking, which should later be integrated through population modelling and adaptive management to fill these gaps.

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“…At the individual-level the decline in productivity of the (Inger et al, 2010;Norris et al, 2004). However, carry-over effects are less plausible since the fat and mass accumulation of Wexford birds staging in Iceland was unchanged between 1998 and 2007 (Fox et al, 2012). For the Islay sub-population, it is unclear what factors currently drive nest survival.…”

Section: Integrating Population-level and Individual-level Resultsmentioning

confidence: 99%

“…This suggests that either breeding ground abiotic/biotic factors that limit breeding success are having greater impacts in the north of the breeding range or a constraint earlier in the annual cycle, where the sub‐populations use broadly different areas, could be having negative carry‐over effects on reproductive success for the Wexford sub‐population (Inger et al, 2010; Norris et al, 2004). However, carry‐over effects are less plausible since the fat and mass accumulation of Wexford birds staging in Iceland was unchanged between 1998 and 2007 (Fox et al, 2012). For the Islay sub‐population, it is unclear what factors currently drive nest survival.…”

Section: Discussionmentioning

confidence: 99%

Differing drivers of decline within a migratory metapopulation has implications for future conservation

Ozsanlav‐Harris,

Hilton,

Griffin

et al. 2023

Ecology and Evolution

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Researchers generally ascribe demographic drivers in a single sub-population and presume they are representative. With this information, practitioners implement blanket conservation measures across metapopulations to reverse declines. However, such approaches may not be appropriate in circumstances where sub-populations are spatiotemporally segregated and exposed to different environmental variation.

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Earlier spring staging in Iceland amongst Greenland White-fronted Geese Anser albifrons flavirostris achieved without cost to refuelling rates

Cited by 9 publications

References 19 publications

Time-varying effects of local weather on behavior and probability of breeding deferral in two Arctic-nesting goose populations

Time-varying effects of local weather on behavior and probability of breeding deferral in two Arctic-nesting goose populations

Effects of climate change on European ducks: what do we know and what do we need to know?

Differing drivers of decline within a migratory metapopulation has implications for future conservation

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