ORCID Profile
0000-0001-5286-4773
Current Organisations
Department of Biodiversity, Conservation and Attractions
,
Murdoch University
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Publisher: Wiley
Date: 27-01-2022
DOI: 10.1111/MEC.16351
Abstract: Temperature and precipitation regimes are rapidly changing, resulting in forest dieback and extinction events, particularly in Mediterranean-type climates (MTC). Forest management that enhance forests' resilience is urgently required, however adaptation to climates in heterogeneous landscapes with multiple selection pressures is complex. For widespread trees in MTC we hypothesized that: patterns of local adaptation are associated with climate precipitation is a stronger factor of adaptation than temperature functionally related genes show similar signatures of adaptation and adaptive variants are independently sorting across the landscape. We s led 28 populations across the geographic distribution of Eucalyptus marginata (jarrah), in South-west Western Australia, and obtained 13,534 independent single nucleotide polymorphic (SNP) markers across the genome. Three genotype-association analyses that employ different ways of correcting population structure were used to identify putatively adapted SNPs associated with independent climate variables. While overall levels of population differentiation were low (F
Publisher: Agentschap Plantentuin Meise
Date: 14-07-2016
Publisher: Informa UK Limited
Date: 03-07-2016
Publisher: Wiley
Date: 24-04-2023
DOI: 10.1002/PEI3.10108
Abstract: Climate change is shifting temperatures from historical patterns, globally impacting forest composition and resilience. Seed germination is temperature‐sensitive, making the persistence of populations and colonization of available habitats vulnerable to warming. This study assessed germination response to temperature in foundation trees in south‐western Australia's Mediterranean‐type climate forests ( Eucalyptus marginata (jarrah) and Corymbia calophylla (marri)) to estimate the thermal niche and vulnerability among populations. Seeds from the species' entire distribution were collected from 12 co‐occurring populations. Germination thermal niche was investigated using a thermal gradient plate (5–40°C). Five constant temperatures between 9 and 33°C were used to test how the germination niche (1) differs between species, (2) varies among populations, and (3) relates to the climate of origin. Germination response differed among species jarrah had a lower optimal temperature and thermal limit than marri ( T o 15.3°C, 21.2°C ED 50 23.4°C, 31°C, respectively). The thermal limit for germination differed among populations within both species, yet only marri showed evidence for adaptation to thermal origins. While marri has the capacity for germination at higher thermal temperatures, jarrah is more vulnerable to global warming exceeding safety margins. This discrepancy is predicted to alter species distributions and forest composition in the future.
Publisher: Authorea, Inc.
Date: 25-09-2021
DOI: 10.22541/AU.163253767.78828867/V1
Abstract: Temperature and precipitation regimes are rapidly changing, resulting in forest dieback and local extinction events, particularly in Mediterranean-type climates. Strategic forest management approaches that enhance forests’ resilience to future climates are urgently required, however adaptation to climates in heterogeneous landscapes with multiple selection pressures may be complex. For widespread trees in Mediterranean-type climates we hypothesized that patterns of local adaptation are associated with climate precipitation is a stronger factor of adaptation than temperature functionally related genes show similar signatures of adaptation and adaptive variants are independently sorting across the landscape. To test our hypotheses, we s led 28 populations across the geographic and climatic distribution of Eucalyptus marginata (jarrah), in south-west Western Australia, and obtained 13,534 independent single nucleotide polymorphic (SNP) markers across the genome. While overall levels of population differentiation were low (FST=0.04), environmental association analyses found a total of 2,336 unique SNPs potentially associated with five climate variables of temperature and precipitation. Allelic turnover was identified for SNPs associated with temperate seasonality and mean precipitation of the warmest quarter (39.2% and 36.9% deviance explained, respectively), suggesting that both temperature and precipitation are important factors in adaptation. SNPs within similarly function genes, according to gene ontology enrichment analysis, had analogous allelic turnover along climate gradients, while SNPs among temperature and precipitation variables had orthogonal patterns of adaptation. These contrasting patterns of adaptation provide evidence that there may be standing genomic variation adapted to changing climates, providing the substrate needed to promote adaptive management strategies to bolster forest resilience in the future.
Publisher: Wiley
Date: 29-08-2020
DOI: 10.1002/FES3.245
Location: Australia
No related grants have been discovered for João Filipe.