Weather and biotic interactions as determinants of seasonal shifts in abundance measured through nest-box occupancy in the Siberian flying squirrel

Selonen, Vesa; Hongisto, Kari; Hänninen, Mikko; Turkia, Tytti; Korpimäki, Erkki

doi:10.1038/s41598-020-71391-2

Cited by 4 publications

(2 citation statements)

References 55 publications

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“…We assert that for population dynamics of migrants, it is important to consider the weather in regions where individuals are currently not located. Similarly as observed, for example, for migrating ungulates, for which winter weather that determines plant growth in spring ranges of the species has major influence on reproductive success (Post and Forchhammer 2008, see also Selonen et al 2020). It is also well known that weather has a major influence on population fluctuations of a wide group of different organisms (Post and Forchhammer 2002;Sheppard et al 2015).…”

Section: Discussionmentioning

confidence: 65%

Identifying the paths of climate effects on population dynamics: dynamic and multilevel structural equation model around the annual cycle

et al. 2021

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How environmental factors influence population dynamics in long-distance migrants is complicated by the spatiotemporal diversity of the environment the individuals experience during the annual cycle. The effects of weather on several different aspects of life history have been well studied, but a better understanding is needed on how weather affects population dynamics through the different associated traits. We utilise 77 years of data from pied flycatcher (Ficedula hypoleuca), to identify the most relevant climate signals associated with population growth rate. The strongest signals on population growth were observed from climate during periods when the birds were not present in the focal location. The population decline was associated with increasing precipitation in the African non-breeding quarters in the autumn (near the arrival of migrants) and with increasing winter temperature along the migration route (before migration). The number of fledglings was associated positively with increasing winter temperature in non-breeding area and negatively with increasing winter temperature in Europe. These possible carry-over effects did not arise via timing of breeding or clutch size but the exact mechanism remains to be revealed in future studies. High population density and low fledgling production were the intrinsic factors reducing the breeding population. We conclude that weather during all seasons has the potential to affect the reproductive success or population growth rate of this species. Our results show how weather can influence the population dynamics of a migratory species through multiple pathways, even at times of the annual cycle when the birds are in a different location than the climate signal.

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Section: Discussionmentioning

confidence: 65%

Identifying the paths of climate effects on population dynamics: dynamic and multilevel structural equation model around the annual cycle

et al. 2021

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“…Abiotic factors such as temperature and precipitation impact species abundance and sometimes behavior, potentially influencing interactions between species ( Mason-Romo et al 2018 ). Similarly, biotic factors such as food availability also impact on population density and behavior, influencing interspecific interactions ( Selonen et al 2020 ). In some circumstances, biotic and abiotic elements synergistically modify the ecosystem and the behavioral responses of species, eliciting a cascade of events that can have significant impacts on the structure of animal populations.…”

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Lower marine productivity increases agonistic interactions between sea lions and fur seals in Northern Pacific Patagonia

et al. 2022

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Interspecific interactions are key drivers of individual and population level fitness in a wide range of animals. However, in marine ecosystems, it is relatively unknown which biotic and abiotic factors impact behavioral interactions between competing species. We assessed the impact of weather, marine productivity and population structure on the behavioral agonistic interactions between South American fur seals (SAFS), Arctocephalus australis, and South American sea lions (SASL), Otaria byronia, in a breeding colony of SAFS. We hypothesized that agonistic interactions between SAFSs and SASLs respond to biotic and abiotic factors such as SAFS population structure, marine productivity and weather. We found that SASL and SAFS interactions almost always resulted in negative impacts on the social structure or reproductive success of the SAFS colony. SASL adult males initiated stampedes of SAFS and/or abducted and predated SAFS pups. Adult SAFS males abundance and severe weather events were negatively correlated with agonistic interactions between species. However, proxies for lower marine productivity such as higher sea surface temperature and lower catches of demerso-pelagic fish were the most important predictors of more frequent agonistic interactions between SAFS and SASL. Under the current scenario of decline in marine biomass due to global climate change and overfishing, agonistic interactions between competing marine predators could increase and exacerbate the negative impacts of environmental change in these species.

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Behavioral plasticity of nocturnal marine organisms under interspecific competitive pressure

Luo

Zhang

Lin

et al. 2023

Global Ecology and Conservation

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Weather and biotic interactions as determinants of seasonal shifts in abundance measured through nest-box occupancy in the Siberian flying squirrel

Abstract: the effect of winter food availability, that is, the lack of food is assumed to affect juveniles (boxes occupied only in autumn) more than adults (boxes occupied whole summer).

Cited by 4 publications

References 55 publications

Identifying the paths of climate effects on population dynamics: dynamic and multilevel structural equation model around the annual cycle

Identifying the paths of climate effects on population dynamics: dynamic and multilevel structural equation model around the annual cycle

Lower marine productivity increases agonistic interactions between sea lions and fur seals in Northern Pacific Patagonia

Behavioral plasticity of nocturnal marine organisms under interspecific competitive pressure

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