Restricted Dispersal in the Late Successional Forest Tree Species <i>Nothofagus Pumilio</i>: Consequences Under Global Change
| hal.structure.identifier | Instituto de Investigaciones Forestales y Agropecuarias Bariloche [IFAB] | |
| dc.contributor.author | SOLIANI, C. | |
| hal.structure.identifier | Philipps Universität Marburg = Philipps University of Marburg | |
| hal.structure.identifier | Université de Fribourg = University of Fribourg [UNIFR] | |
| dc.contributor.author | SEKELY, J. | |
| hal.structure.identifier | Université de Fribourg = University of Fribourg [UNIFR] | |
| dc.contributor.author | ZAMORA‐BALLESTEROS, C | |
| hal.structure.identifier | Université de Fribourg = University of Fribourg [UNIFR] | |
| dc.contributor.author | HEER, K. | |
| hal.structure.identifier | Biodiversité, Gènes & Communautés [BioGeCo] | |
| dc.contributor.author | LEPAIS, Olivier | |
| hal.structure.identifier | Instituto Nacional de Tecnología Agropecuaria [Mendoza] [INTA] | |
| dc.contributor.author | MONDINO, V. | |
| hal.structure.identifier | Philipps Universität Marburg = Philipps University of Marburg | |
| dc.contributor.author | OPGENOORTH, L. | |
| hal.structure.identifier | Instituto de Investigaciones Forestales y Agropecuarias Bariloche [IFAB] | |
| dc.contributor.author | PASTORINO, M. | |
| hal.structure.identifier | Instituto de Investigaciones Forestales y Agropecuarias Bariloche [IFAB] | |
| dc.contributor.author | MARCHELLI, P. | |
| dc.date.accessioned | 2025-07-19T02:02:04Z | |
| dc.date.available | 2025-07-19T02:02:04Z | |
| dc.date.issued | 2025-05 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/207360 | |
| dc.description.abstractEn | Plants rely on gamete dispersal to ensure the inheritance of their genes. Gene flow, mediated by pollen and seed dispersal, also fosters species' cohesion across space, facilitates population migration, and influences local adaptation. Nothofagus pumilio is an ecologically important wind-dispersed tree species of the Patagonian Andes. We aim to uncover its current and historic effective dispersal distances and characterize its fine-scale genetic structure. In a naturally monospecific stand of N. pumilio, we sampled 200 adults and 400 seedlings. Using a modern sequencing approach (SSRseq), we developed 15 nuclear microsatellite markers for genotyping and used them to characterize genetic diversity and fine-scale genetic structure. We estimated dispersal distances using direct methods (i.e., neighborhood models) and indirect (i.e., inferred from fine-scale spatial genetic structure). Short average seed and pollen dispersal distances were estimated (δs = 13.33 m and δp = 24.08 m respectively), but the fat-tailed distribution of dispersal kernels also suggests some immigration and long-distance dispersal events. Indirect estimates (σ2g = 21.62) are closely aligned with direct estimates. The majority of seedlings (84%) could be assigned to at least one sampled adult within the plot, and these seedlings were produced by just 43% of sampled adults. Reproductive success was significantly associated with seed donors' diameters at breast height. N. pumilio's distribution expansion capacity may be limited by short seed dispersal distances, especially in the context of global change. Natural and assisted migration actions should be prioritized to mitigate future change effects. | |
| dc.language.iso | en | |
| dc.publisher | Wiley Open Access | |
| dc.rights.uri | http://creativecommons.org/licenses/by/ | |
| dc.subject.en | direct method | |
| dc.subject.en | gene flow | |
| dc.subject.en | pollen dispersal | |
| dc.subject.en | seed dispersal | |
| dc.subject.en | seed donors | |
| dc.subject.en | spatial genetic structure | |
| dc.title.en | Restricted Dispersal in the Late Successional Forest Tree Species <i>Nothofagus Pumilio</i>: Consequences Under Global Change | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1002/ece3.71002 | |
| dc.subject.hal | Sciences de l'environnement | |
| bordeaux.journal | Ecology and Evolution | |
| bordeaux.volume | 15 | |
| bordeaux.hal.laboratories | BioGeCo (Biodiversité Gènes & Communautés) - UMR 1202 | * |
| bordeaux.issue | 5 | |
| bordeaux.institution | Université de Bordeaux | |
| bordeaux.institution | INRAE | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-05168694 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| dc.description.abstractEs | Para garantizar la herencia de sus genes, las plantas dependen de la dispersi & oacute;n efectiva de sus gametas. El flujo gen & eacute;tico, mediado por la dispersi & oacute;n del polen y las semillas, promueve la cohesi & oacute;n en el espacio a nivel intra-espec & iacute;fico, facilita la migraci & oacute;n de las poblaciones e incide en la adaptaci & oacute;n local. Nothofagus pumilio es una especie arb & oacute;rea de gran importancia ecol & oacute;gica de los bosques Andino -Patag & oacute;nicos que se dispersa por el viento. En este trabajo, nuestro objetivo es conocer sus distancias de dispersi & oacute;n efectivas, actuales e hist & oacute;ricas, y caracterizar su estructura gen & eacute;tica a peque & ntilde;a escala. En un rodal monoespec & iacute;fico de N. pumilio, tomamos muestras de 200 adultos y 400 pl & aacute;ntulas. Utilizando una moderna metodolog & iacute;a de secuenciaci & oacute;n (SSRseq), desarrollamos 15 marcadores microsat & eacute;lites nucleares para el genotipado de los individuos y los utilizamos para caracterizar la diversidad y la estructura gen & eacute;tica a peque & ntilde;a escala. Estimamos las distancias de dispersi & oacute;n utilizando m & eacute;todos directos (por medio de modelos de vecindad) e indirectos (inferidos a partir de la estructura gen & eacute;tica espacial a peque & ntilde;a escala). Estimamos las distancias medias de dispersi & oacute;n de las semillas y el polen (delta s = 13.33 m y delta p = 24.08 m respectivamente), que indicaron una dispersi & oacute;n efectiva a corta distancia. La distribuci & oacute;n de los n & uacute;cleos de dispersi & oacute;n sugiere adem & aacute;s la ocurrencia de algunos eventos de inmigraci & oacute;n y dispersi & oacute;n a larga distancia, o bien desde las inmediaciones de la parcela. Las estimaciones indirectas (sigma 2g = 21.62) coinciden con las directas. Logramos asignar al menos un progenitor a la mayor & iacute;a de las pl & aacute;ntulas (84%), que fueron producidas por s & oacute;lo el 43% de los adultos muestreados. Tambi & eacute;n se midi & oacute; la altura y el di & aacute;metro a la altura del pecho (DAP) de los adultos, y el & eacute;xito reproductivo se asoci & oacute; significativamente con el DAP de los & aacute;rboles que actuaron como donantes de semillas (flores femeninas). Las cortas distancias de dispersi & oacute;n de las semillas sugieren que la capacidad de expansi & oacute;n de la distribuci & oacute;n de N. pumilio puede ser limitada, especialmente en el contexto del cambio global. Proponemos que deber & iacute;an priorizarse las acciones de migraci & oacute;n natural y/o asistida para mitigar los futuros efectos del cambio clim & aacute;tico. | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-05168694v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Ecology%20and%20Evolution&rft.date=2025-05&rft.volume=15&rft.issue=5&rft.au=SOLIANI,%20C.&SEKELY,%20J.&ZAMORA%E2%80%90BALLESTEROS,%20C&HEER,%20K.&LEPAIS,%20Olivier&rft.genre=article |
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