A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Demographic Basis of Spatially Structured Fluctuations in a Threespine Stickleback Metapopulation (2023)
Phillips, J. S., Einarsson, Á., Strickland, K., Ives, A. R., Kristjánsson, B. K., & Räsänen, K. (2023). Demographic Basis of Spatially Structured Fluctuations in a Threespine Stickleback Metapopulation. American Naturalist, 201(3), E41-E55. https://doi.org/10.1086/722741
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Phillips, Joseph S.; Einarsson, Árni; Strickland, Kasha; Ives, Anthony R.; Kristjánsson, Bjarni K.; Räsänen, Katja
Lehti tai sarja: American Naturalist
ISSN: 0003-0147
eISSN: 1537-5323
Julkaisuvuosi: 2023
Ilmestymispäivä: 20.01.2023
Volyymi: 201
Lehden numero: 3
Artikkelin sivunumerot: E41-E55
Kustantaja: University of Chicago Press
Julkaisumaa: Yhdysvallat (USA)
Julkaisun kieli: englanti
DOI: https://doi.org/10.1086/722741
Julkaisun avoin saatavuus: Ei avoin
Julkaisukanavan avoin saatavuus:
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/93411
Tiivistelmä
Uncovering the demographic basis of population fluctuations is a central goal of population biology. This is particularly challenging for spatially structured populations, which require disentangling synchrony in demographic rates from coupling via movement between locations. In this study, we fit a stage-structured metapopulation model to a 29-year time series of threespine stickleback abundance in the heterogeneous and productive Lake Mývatn, Iceland. The lake comprises two basins (North and South) connected by a channel through which the stickleback disperse. The model includes time-varying demographic rates, allowing us to assess the potential contributions of recruitment and survival, spatial coupling via movement, and demographic transience to the population’s large fluctuations in abundance. Our analyses indicate that recruitment was only modestly synchronized between the two basins, whereas survival probabilities of adults were more strongly synchronized, contributing to cyclic fluctuations in the lake-wide population size with a period of approximately 6 years. The analyses further show that the two basins were coupled through movement, with the North Basin subsidizing the South Basin and playing a dominant role in driving the lake-wide dynamics. Our results show that cyclic fluctuations of a metapopulation can be explained in terms of the combined effects of synchronized demographic rates and spatial coupling.
YSO-asiasanat: populaatioekologia; populaatiodynamiikka; metapopulaatiot; järvet; kalat; kolmipiikki
Vapaat asiasanat: demographic transience; Gasterosteus aculeatus; Mývatn; population cycles; spatial synchrony; state-space model
Liittyvät organisaatiot
OKM-raportointi: Kyllä
Raportointivuosi: 2023
Alustava JUFO-taso: 3
