Dynamic sensitivity to resource availability influences population responses to mismatches in a shorebird

Wilde, Luke R.; Simmons, Josiah E.; Swift, Rose J.; Senner, Nathan R.

doi:10.1002/ecy.3743

Cited by 6 publications

(5 citation statements)

References 52 publications

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“…For instance, when godwits experienced slow, linear changes in climate in the past, information from previous breeding ground conditions strongly predicted godwit breeding ground arrival timing 11 . The Arctic, however, is currently experiencing some of the most rapidly changing climate regimes 39,40 – causing godwits to experience increasingly variable conditions upon arrival in recent years 22 . Thus, knowledge of previous years breeding ground conditions may be increasingly unreliable for godwits, limiting their ability to predict conditions within a given year and inform their subsequent migratory timing accordingly.…”

Section: Discussionmentioning

confidence: 99%

“…As a result, Beluga-breeding godwits advanced both their spring migratory and reproductive timing by 9 days between 1974-2010 11,21 . Nonetheless, in anomalously early and warm years, godwits experience phenological mismatches that significantly reduce reproductive success 22 . Godwits also exhibit high levels of mate fidelity and in some cases, rapid clutch initiation following migration 20 , suggesting that sex-specific goals may affect the strategies each sex can use to adjust their migratory timing.…”

Section: Introductionmentioning

confidence: 99%

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Flexibility in the face of climate change? A rapid and dramatic shift toward later spring migration in Hudsonian Godwits (Limosa haemastica)

Puleo,

Huang,

Stager

et al. 2024

Preprint

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With rapid environmental change, shifts in migration timing are vitally important for maintaining population stability and have been widely documented. However, little remains known about how migrants are driving these shifts and what factors may influence the effective utilization of these strategies, limiting our ability to accurately assess species- and population-level vulnerability to climate change. The Hudsonian godwit (Limosa haemastica) is an extreme long-distance migratory shorebird that has (1) previously shifted its population-level migration timing and (2) exhibits sex-specific morphological differences. Therefore, we combined over a decade of light-level geolocator tracking data from a single breeding population with a historical predictive model to assess on-going shifts in migration timing while determining the time-shifting strategies utilized by each sex. Surprisingly, we found that godwit departure and arrival timing rapidly shifted 6 days later from 2010-2023 with no differences in timing between the sexes. Despite this change in migration timing, the population has maintained an average migratory duration of 24 days, suggesting that godwits are driving shifts in arrival timing entirely by shifting their nonbreeding ground departure, something rarely documented in long-distance migrants. Yet, we also found that godwits are not shifting their migration timing in the direction predicted by our model, providing evidence that this response may not be adaptive. These results emphasize the urgent need for a more holistic approach to assessing the relative vulnerability of migratory species and the adaptiveness of changes in migration timing.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexibility in the face of climate change? A rapid and dramatic shift toward later spring migration in Hudsonian Godwits (Limosa haemastica)

Puleo,

Huang,

Stager

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…That earlier hatching broods had a greater probability of survival supports the idea that if human disturbance is reduced during the nesting period (i.e., beach driving restrictions), perhaps plover adults may nest earlier and thus give broods a higher chance of survival by successfully reaching older age earlier (Walker et al 2019). Many other factors could influence greater chick survival earlier in the season such as prey abundance and predator movement, which should be studied in further detail (Stantial et al 2020, Wilde et al 2022).…”

Section: Discussionmentioning

confidence: 99%

Piping plover chick ecology following landscape‐level disturbance

et al. 2022

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Population declines of disturbance‐dependent species due to suppression of natural disturbances are realized across ecosystems. The piping plover (Charadrius melodus; plover), a disturbance‐dependent and conservation‐reliant shorebird that nests on sandy beaches and barrier islands on the Atlantic Coast, was listed under the United States Endangered Species Act in 1986. In 2012, Hurricane Sandy landed on Fire and Westhampton islands, barrier island nesting sites for plovers in New York, USA. Hurricane Sandy was a natural disturbance in this system, creating abundant nesting habitat. The number of chicks produced by a pair, or a population, is a direct measure of reproductive output, and gaining a better understanding of productivity and chick behavior following large‐scale habitat creation may improve plover habitat management and potentially species persistence. We evaluated the effects of landscape features on habitat selection, behavior, and survival of plover broods using logistic regression, generalized linear mixed effects models, and survival models. Plover broods selected flatter sites with less dense vegetation than available at random. Chick foraging rates were highest in moist substrates and were lower in areas of higher nesting plover density. Chick survival was greater for broods that hatched earlier in the breeding season and increased as chicks aged. Generally, providing access to sites with flatter, moist substrates will likely result in higher quality brood rearing habitat on the landscape. Ultimately, vegetation removal and habitat management may be needed to reduce plover nesting density and ensure sufficient habitat, which may in turn improve plover chick survival. Moreover, sustaining natural landscape disturbances such as those resulting from storms, and not taking actions to prevent hurricane‐created overwash, will allow these landscape features to persist.

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“…This variability in metrics hampers comparisons between studies, as this will not only impact estimates of rates of phenological change [ 32 , 33 ], but also their precision [ 34 ], ultimately impacting inferences regarding the drivers of observed phenological change [ 30 , 35 ]. Fifth, different models have been used to quantify the degree of mismatch between a consumer and its resource [ 23 , 36 ], whereas the choice of a model can influence estimates of mismatch and thereby affect any downstream inference regarding their impact on the vital rates of consumers [ 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

Different currencies for calculating resource phenology result in opposite inferences about trophic mismatches

Versluijs,

Zhemchuzhnikov,

Kutcherov

et al. 2024

Proc. R. Soc. B.

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Shifts in phenology are among the key responses of organisms to climate change. When rates of phenological change differ between interacting species they may result in phenological asynchrony. Studies have found conflicting patterns concerning the direction and magnitude of changes in synchrony, which have been attributed to biological factors. A hitherto overlooked additional explanation are differences in the currency used to quantify resource phenology, such as abundance and biomass. Studying an insectivorous bird (the sanderling) and its prey, we show that the median date of cumulative arthropod biomass occurred, on average, 6.9 days after the median date of cumulative arthropod abundance. In some years this difference could be as large as 21 days. For 23 years, hatch dates of sanderlings became less synchronized with the median date of arthropod abundance, but more synchronized with the median date of arthropod biomass. The currency-specific trends can be explained by our finding that mean biomass per arthropod specimen increased with date. Using a conceptual simulation, we show that estimated rates of phenological change for abundance and biomass can differ depending on temporal shifts in the size distribution of resources. We conclude that studies of trophic mismatch based on different currencies for resource phenology can be incompatible with each other.

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Dynamic sensitivity to resource availability influences population responses to mismatches in a shorebird

Cited by 6 publications

References 52 publications

Flexibility in the face of climate change? A rapid and dramatic shift toward later spring migration in Hudsonian Godwits (Limosa haemastica)

Flexibility in the face of climate change? A rapid and dramatic shift toward later spring migration in Hudsonian Godwits (Limosa haemastica)

Piping plover chick ecology following landscape‐level disturbance

Different currencies for calculating resource phenology result in opposite inferences about trophic mismatches

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