A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Landscape fragmentation overturns classical metapopulation thinking (2024)

Tao, Y., Hastings, A., Lafferty, K. D., Hanski, I., & Ovaskainen, O. (2024). Landscape fragmentation overturns classical metapopulation thinking. Proceedings of the National Academy of Sciences of the United States of America, 121(20), Article e2303846121. https://doi.org/10.1073/pnas.2303846121

JYU-tekijät tai -toimittajat

Ovaskainen, Otso

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Tao, Yun; Hastings, Alan; Lafferty, Kevin D.; Hanski, Ilkka; Ovaskainen, Otso

Lehti tai sarja: Proceedings of the National Academy of Sciences of the United States of America

ISSN: 0027-8424

eISSN: 1091-6490

Julkaisuvuosi: 2024

Ilmestymispäivä: 06.05.2024

Volyymi: 121

Lehden numero: 20

Artikkelinumero: e2303846121

Kustantaja: National Academy of Sciences

Julkaisumaa: Yhdysvallat (USA)

Julkaisun kieli: englanti

DOI: https://doi.org/10.1073/pnas.2303846121

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Tiivistelmä

Habitat loss and isolation caused by landscape fragmentation represent a growing threat to global biodiversity. Existing theory suggests that the process will lead to a decline in metapopulation viability. However, since most metapopulation models are restricted to simple networks of discrete habitat patches, the effects of real landscape fragmentation, particularly in stochastic environments, are not well understood. To close this major gap in ecological theory, we developed a spatially explicit, individual- based model applicable to realistic landscape structures, bridging metapopulation ecology and landscape ecology. This model reproduced classical metapopulation dynamics under conventional model assumptions, but on fragmented landscapes, it uncovered general dynamics that are in stark contradiction to the prevailing views in the ecological and conservation literature. Notably, fragmentation can give rise to a series of dualities: a) positive and negative responses to environmental noise, b) relative slowdown and acceleration in density decline, and c) synchronization and desynchronization of local population dynamics. Furthermore, counter to common intuition, species that interact locally (“residents”) were often more resilient to fragmentation than long- ranging “migrants.” This set of findings signals a need to fundamentally reconsider our approach to ecosystem management in a noisy and fragmented world.

YSO-asiasanat: pirstoutuminen; metapopulaatiot; kannanvaihtelut; populaatiodynamiikka; maisemaekologia

Vapaat asiasanat: metapopulation; fragmentation; population dynamics; landscape ecology

Liittyvät organisaatiot

Hankkeet, joissa julkaisu on tehty

OKM-raportointi: Kyllä

Raportointivuosi: 2024

Alustava JUFO-taso: 3