Changing spring snow cover dynamics and early season forage availability affect the behavior of a large carnivore

Rickbeil, Gregory J. M.; Coops, Nicholas C.; Berman, Ethan E.; McClelland, Cameron J.R.; Bolton, Douglas K.; Stenhouse, Gordon B.

doi:10.1111/gcb.15295

Cited by 5 publications

(1 citation statement)

References 69 publications

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“…The start of the seed availability time was determined by the end of snowmelt in spring because after the snow melt seeds (remaining from previous year's harvest) could be easily dug out from the ground. Following the method of Rickbeil, Coops [49] we used the MODIS Terra Snow Cover daily 500 m spatial resolution product MOD10A1 to measure the different degree of snowmelt (i.e., the onset and the end of snowmelt). We first created a time-series to capture the daily percent of snow cover (from day 1 to day 210) for each stopover and breeding site, for each track.…”

Section: Calculating the Timing Of The Seed Wave And The Green Wavementioning

confidence: 99%

Migratory herbivorous waterfowl track multiple resource waves during spring migration

Wei

et al. 2023

Preprint

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In 1980s, many wetlands in China have been transformed into farmlands. In response, East Asian waterfowl populations have taken advantage of spilled seeds left after harvest and now intensively use farmlands during migration. Accordingly, waterfowl might have expanded their migration strategy from merely surfing the green wave of newly emerging vegetation to also incorporating post-harvest agricultural seeds for refueling en route. However, how migratory birds use the phenology of multiple food resources to time their seasonal migration is yet to be explored. Here, we use 166 spring migration tracks of five East Asian herbivorous waterfowl species with a mixed-effect resource selection function model to test how waterfowl use the newly emerging vegetation (the green wave) and the post-harvest agricultural seeds (the seed wave) during spring migration. We find waterfowl arrive at their core stopover sites in the Northeast China Plain after agricultural seeds become available and extend their stay after spring vegetation emerges. Smaller-bodied species tend to arrive at this area later to better use the newly emerged vegetation. Regarding the breeding site, four geese species arrive after the emergence of vegetation, while tundra swans are slightly earlier. Our findings suggest that a strategy of resource coupling has allowed waterfowl to cope with the environmental change that has occurred along their migration routes: they time their migration to exploit both natural and anthropogenic food resources. Management initiatives that combine the preservation of natural habitats with adaptive agricultural practices could safeguard these threatened, long-distance migratory bird species.

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Section: Calculating the Timing Of The Seed Wave And The Green Wavementioning

confidence: 99%

Migratory herbivorous waterfowl track multiple resource waves during spring migration

Wei

et al. 2023

Preprint

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A systematic review of the effects of climate variability and change on black and brown bear ecology and interactions with humans

Kurth,

Malpeli,

Clark

et al. 2024

Biological Conservation

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SnowWarp: An open science and open data tool for daily monitoring of snow dynamics

Laurin¹,

Francini²,

Penna³

et al. 2022

Environmental Modelling & Software

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Changing spring snow cover dynamics and early season forage availability affect the behavior of a large carnivore

Cited by 5 publications

References 69 publications

Migratory herbivorous waterfowl track multiple resource waves during spring migration

Migratory herbivorous waterfowl track multiple resource waves during spring migration

A systematic review of the effects of climate variability and change on black and brown bear ecology and interactions with humans

SnowWarp: An open science and open data tool for daily monitoring of snow dynamics

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