dc.creator | Gillard, Morgane B. | es |
dc.creator | Castillo Segura, Jesús Manuel | es |
dc.creator | Mesgaran, Mohsen B. | es |
dc.creator | Futrell, Caryn J. | es |
dc.creator | Grewell, Brenda J. | es |
dc.date.accessioned | 2023-04-20T09:24:33Z | |
dc.date.available | 2023-04-20T09:24:33Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Gillard, M.B., Castillo Segura, J.M., Mesgaran, M.B., Futrell, C.J. y Grewell, B.J. (2022). Germination niche breadth of invasive Iris pseudacorus (L.) suggests continued recruitment from seeds with global warming. American Journal of Botany, 109 (7), 1108-1119. https://doi.org/10.1002/ajb2.16026. | |
dc.identifier.issn | 0002-9122 | es |
dc.identifier.issn | 1537-2197 | es |
dc.identifier.uri | https://hdl.handle.net/11441/144688 | |
dc.description.abstract | Premise: Understanding recruitment processes of invasive species is central to
conservation and management strategies. Iris pseudacorus, an emergent macrophyte,
has established invasive populations across a broad global range, and reduces
biodiversity in wetland ecosystems. Climate change is altering germination cues, yet
studies on the invasion of wetland macrophytes often ignore germination ecology
despite its importance to their establishment and spread.
Methods: We explored germination of seeds from invasive I. pseudacorus populations
in California in response to seed coat presence or absence, and several environmental
factors. Using experimental results in a thermal time model, we derived germination
temperature thresholds.
Results: Germination of I. pseudacorus seeds did not require cold or warm stratification,
and was not affected by seed coat presence or absence. Germination occurred in the
dark, although germinability was two‐ to threefold times greater under light. At constant
temperature, thermal time model estimates included 18.3 ± 1.8°C base germination
temperature (Tb); 28.2 ± 0.5°C optimal temperature (To); and 41.0 ± 1.7°C ceiling
temperature (Tc). Seeds exposed to 36.0°C achieved over 10% germination, and embryos
of ungerminated seeds presented 76% viability. Overall, germinability remained relatively
low at constant temperatures (≤25%) but was close to 90% under alternating daily
temperatures.
Conclusions: Exposure to diurnally fluctuating temperatures is essential for this
species to achieve high germination rates. Our study reveals that I. pseudacorus has a
broad germination niche supporting its establishment in a relatively wide range of
environments, including at high temperatures more frequent with climate change. | es |
dc.format | application/pdf | es |
dc.format.extent | 12 p. | es |
dc.language.iso | eng | es |
dc.publisher | Wiley-Blackwell | es |
dc.relation.ispartof | American Journal of Botany, 109 (7), 1108-1119. | |
dc.rights | Atribución-NoComercial 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ | * |
dc.subject | Climate change | es |
dc.subject | Germination ecology | es |
dc.subject | Global warming | es |
dc.subject | Invasive species | es |
dc.subject | Plant invasions | es |
dc.subject | Seed coat | es |
dc.subject | Seed dormancy | es |
dc.subject | Thermal time models | es |
dc.title | Germination niche breadth of invasive Iris pseudacorus (L.) suggests continued recruitment from seeds with global warming | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Biología Vegetal y Ecología | es |
dc.relation.publisherversion | https://doi.org/10.1002/ajb2.16026 | es |
dc.identifier.doi | 10.1002/ajb2.16026 | es |
dc.journaltitle | American Journal of Botany | es |
dc.publication.volumen | 109 | es |
dc.publication.issue | 7 | es |
dc.publication.initialPage | 1108 | es |
dc.publication.endPage | 1119 | es |