Factors controlling seed germination of the Iberian critically endangered Pseudomisopates (Antirrhinaceae)

Amat, María E.; Vargas, Pablo; Gómez, José M.

doi:10.1007/s00606-014-1045-5

Cited by 3 publications

(4 citation statements)

References 40 publications

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“…(Amat et al ., , ). Pseudomisopates is a pyrophyte in which germination is strongly stimulated by fire (Amat, ; Amat et al ., ). It has been shown to be self‐incompatible and reproduction is pollen‐limited (Amat et al ., ).…”

Section: Methodsmentioning

confidence: 97%

“…These ranges were included in the model in order to estimate parameters on demographic scales. Given that fire is needed for the species to germinate, and the long‐life span of the species (Amat, ; Amat et al ., ), we considered two generation times of 10 and 20 years, based on the estimated recurrence of fire events in Mediterranean shrublands (Trabaud, ; Mouillot et al ., ). For each input tree, we ran six I Ma 2 analyses with 20 parallel Markov chains each.…”

Section: Methodsmentioning

confidence: 99%

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Narrow endemics in European mountains: high genetic diversity within the monospecific genus Pseudomisopates (Plantaginaceae) despite isolation since the late Pleistocene

Jiménez‐Mejías

Fernández‐Mazuecos

Amat

et al. 2015

Journal of Biogeography

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Aim The evolutionary history of narrow endemic species has received little attention compared with that of more widely distributed species. Small effective population sizes and long-term isolation of many narrow endemic species make research on their genetic make-up important for their future conservation. In this study we investigated the genetic variation and historical distribution of an isolated plant, the monospecific genus Pseudomisopates, as an example of the phylogeographical history of narrow endemics.Location Central Range, Iberian Peninsula, Mediterranean Europe.Methods We used amplified fragment length polymorphisms (AFLPs), nuclear and plastid DNA sequences and species distribution modelling. Sequence data were analysed using statistical parsimony, molecular dating, and a coalescent-based Bayesian model of isolation with migration. Genetic diversity and differentiation analyses based on AFLP data were performed. We compared the detection of clones using AFLPs with the results of a previous study that used simple sequence repeats (SSRs).Results AFLP analysis revealed that SSRs underestimate clone number. The coalescent-based Bayesian model of isolation with migration suggested a late Pleistocene divergence between the populations of Pseudomisopates on two mountain massifs (Gredos and La Serrota), despite the presence of a large area suitable for population admixture. Moderate to high levels of genetic diversity and high effective population sizes were inferred.Main conclusions Our results imply that the levels of genetic diversity within narrow endemic species from Mediterranean mountains could primarily be driven by extrinsic historical factors, rather than by intrinsic species-specific factors depending on their own biological characteristics. Narrow endemics are widely believed to harbour low genetic diversity because of small effective population sizes. However, this study and others on narrow endemic angiosperms demonstrate that narrow endemism does not necessarily result in low genetic diversity.

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Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

Narrow endemics in European mountains: high genetic diversity within the monospecific genus Pseudomisopates (Plantaginaceae) despite isolation since the late Pleistocene

Jiménez‐Mejías

Fernández‐Mazuecos

Amat

et al. 2015

Journal of Biogeography

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“…; Giménez‐Benavides & Milla ; Amat et al . ). However, in the Mediterranean mountains a high proportion of species seem to be physiologically prepared for rapid germination or have a lower requirement for a cold stratification period (Giménez‐Benavides et al .…”

Section: Impacts Of Climate Change On Reproduction and Regeneration Omentioning

confidence: 97%

How does climate change affect regeneration of Mediterranean high‐mountain plants? An integration and synthesis of current knowledge

et al. 2017

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Mediterranean mountains are extraordinarily diverse and hold a high proportion of endemic plants, but they are particularly vulnerable to climate change, and most species distribution models project drastic changes in community composition. Retrospective studies and long-term monitoring also highlight that Mediterranean highmountain plants are suffering severe range contractions. The aim of this work is to review the current knowledge of climate change impacts on the process of plant regeneration by seed in Mediterranean high-mountain plants, by combining available information from observational and experimental studies. We also discuss some processes that may provide resilience against changing environmental conditions and suggest some research priorities for the future. With some exceptions, there is still little evidence of the direct effects of climate change on pollination and reproductive success of Mediterranean high-mountain plants, and most works are observational and/or centred only in the post-dispersal stages (germination and establishment). The great majority of studies agree that the characteristic summer drought and the extreme heatwaves, which are projected to be more intense in the future, are the most limiting factors for the regeneration process. However, there is an urgent need for studies combining elevational gradient approaches with experimental manipulations of temperature and drought to confirm the magnitude and variability of species 0 responses. There is also limited knowledge about the ability of Mediterranean high-mountain plants to cope with climate change through phenotypic plasticity and local adaptation processes. This could be achieved by performing common garden and reciprocal translocation experiments with species differing in life history traits.

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“…As técnicas de análise estatística preocupadas em estudar o tempo até a ocorrência de um determinado evento, conhecidas como análise de sobrevivência, oferecem o conjunto mais adequado e poderoso de análise de dados de germinação (McNAIR; SUNKARA; FORBISH, 2012), embora tenham sido pouco usadas para esta nalidade (AMAT; VARGAS; GOMÉZ, 2014;MANSO et al, 2013;ONOFRI et al, 2010;SCOTT;JONES;WILLIAMS, 1984 Os dados na análise de sobrevivência podem ser escritos como um par ordenado (t i , δ i ) em que t i é o tempo de falha ou censura e δ i é o indicador de censura, tal que,…”

Section: Análise De Sobrevivênciaunclassified

Modelos de dose-resposta com censura intervalar aplicados a dados de germinação de sementes

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Factors controlling seed germination of the Iberian critically endangered Pseudomisopates (Antirrhinaceae)

Cited by 3 publications

References 40 publications

Narrow endemics in European mountains: high genetic diversity within the monospecific genus Pseudomisopates (Plantaginaceae) despite isolation since the late Pleistocene

Narrow endemics in European mountains: high genetic diversity within the monospecific genus Pseudomisopates (Plantaginaceae) despite isolation since the late Pleistocene

How does climate change affect regeneration of Mediterranean high‐mountain plants? An integration and synthesis of current knowledge

Modelos de dose-resposta com censura intervalar aplicados a dados de germinação de sementes

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