Species specific vulnerability to increased drought in temperate and Mediterranean floodplain forests

Pericolo, Osvaldo; Camarero, J. Julio; Colangelo, Michele; Valeriano, Cristina; Sánchez‐Salguero, Raúl; Borghetti, Marco; Castellaneta, Maria; Nola, Paola; Ripullone, Francesco

doi:10.1016/j.agrformet.2022.109238

Cited by 6 publications

(3 citation statements)

References 47 publications

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“…Nowadays, PAN is an extremely small (i.e. 64 remaining trees, all surveyed and genotyped) and isolated remnant of lowland forest, mostly surrounded by cultivated fields and coastal pine forests (Travascia et al 2022, Pericolo et al 2023). The population, which has undergone a strong reduction in its census size over the last two centuries due to massive human overexploitation, showed reduced genetic variation, with an average ∼20% decrease in allelic richness with respect to the other studied populations.…”

Section: Discussionmentioning

confidence: 99%

The latitudinal trend in genetic diversity and distinctiveness ofQuercus roburrear edge forest remnants calls for new conservation priorities

Avanzi,

Bagnoli,

Romiti

et al. 2023

Preprint

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Knowledge of the spatial distribution of intraspecific genetic variation is essential for conserving biodiversity, designing rational networks of protected areas, and informing translocation strategies. Although the Italian peninsula likely harbours unique genetic variation as a legacy of Quaternary migrations towards southern Europe, few genetic data are available for many Italian forest tree species and populations.Here, we present the first, comprehensive characterisation of the nuclear genetic variation of Italian populations of pedunculate oak (Quercus roburL.), an iconic broadleaved species of lowland forests. A total of 745 individuals from 25 populations were sampled across the local range of the species and genotyped with 16 microsatellite markers. The genetic layout ofQ. roburpopulations was assessed through various metrics of diversity and distinctiveness, as well as by Bayesian clustering and multivariate methods. Based on the inferred genetic structure, the demographic history ofQ. roburgene pools was evaluated through Approximate Bayesian Computation (ABC) analysis.We found a clear spatial trend in the estimates of genetic diversity and distinctiveness of ItalianQ. roburpopulations. The genetic distinctiveness and private allelic richness values showed a linear decline with increasing latitude, while allelic richness reached its peak in central Italy. We also observed a south-to-north trend in the complexity of genetic structure, with peninsular Italy being characterised by a mosaic of gene pools, in contrast to the homogeneity exhibited by northern Italian populations. Demographic inference indicated that the southern gene pool has had separate dynamics for the last 135,000 years and, therefore, populations in central Italy did not originate from a northward migration route after the Last Glacial Maximum (LGM). Therefore, they were not only a ‘melting pot’ of multiple recolonization routes, but most likely a mosaic of small refugia where pedunculate oak persisted during the LGM.Our results shed new light on conservation priorities for highly fragmentedQ. roburpopulations, and call for consideration of whether treating the southern and central Italian populations as independent conservation units, or intervening to increase their genetic connectivity, is the best strategy for their long-term conservation.

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Section: Discussionmentioning

confidence: 99%

The latitudinal trend in genetic diversity and distinctiveness ofQuercus roburrear edge forest remnants calls for new conservation priorities

Avanzi,

Bagnoli,

Romiti

et al. 2023

Preprint

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“…Nel bosco Pantano di Policoro per il concomitante effetto di alterazioni della regimazione idraulica dell'asta fluviale e di stagioni siccitose, le specie igrofile (frassino ossifillo, ontano e pioppo bianco e, su tutte, la farnia) vengono progressivamente sostituite da specie della macchia mediterranea (Pericolo et al 2023). Ciò mette a rischio la conservazione dei lembi relitti di foresta planiziaria con presenza di farnia, habitat di grande importanza sul piano conservazionistico.…”

Section: Stress Climatico: Casi Ed Effetti In Basilicataunclassified

Caring for the forests of an inland area in the era of climate change: a case study of Basilicata, Southern Italy

Borghetti,

Ferrara,

Moretti

et al. 2024

Forest@

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Caring for the forests of an inland area in the era of climate change: a case study of Basilicata, Southern ItalyThis study provides an overview of the forests of Basilicata, Southern Italy, including their recent history, dominant forest types, current management, and vulnerability to climate change and wildfire. It outlines silvicultural and management proposals that can be implemented in the new forest plan that the Basilicata Region is about to adopt. The proposals are based on the principle of adaptive management to support forest functionality, biodiversity and ecosystem services. Silvicultural methods include continuous cover forestry, natural regeneration, species richness and functional diversity, structural diversification, imitation of natural disturbances, tree retention to increase biodiversity. The characteristics of the forest-wood supply chain have been analyzed, highlighting weaknesses and possible improvements.

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“…In the Mediterranean basin, forest dieback phenomena have been reported in temperate oaks (Quercus robur L., Qurcus petraea Matt. Liebl) in northeastern Italy [18,19] and northern Spain [20], while in southern Italy, dieback has affected oak species such as Quercus cerris L., Quercus pubescens Willd. [21] and Quercus frainetto Ten.…”

Section: Introductionmentioning

confidence: 99%

Assessing Forest Vulnerability to Climate Change Combining Remote Sensing and Tree-Ring Data: Issues, Needs and Avenues

Italiano

Camarero

Colangelo

et al. 2023

Forests

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Forests around the world are facing climate change. Increased drought stress and severe heat waves in recent decades have negatively impacted on forest health, making them more vulnerable and prone to dieback and mortality phenomena. Although the term vulnerability is used to indicate an increased susceptibility of forests to climate change with a worsening of their vigour status that can compromise their ability to respond to further climate extreme events, there are still uncertainties on how to evaluate it. Indeed, evaluation of forest vulnerability is complex both because of some critical issues in the estimation methods used and because of the multiple factors influencing the response of forests to ongoing climate change. A way to assess the vulnerability to environmental stresses is by combining remote sensing and dendroecological data. However, these two approaches entail multiple uncertainties, including growth/photosynthetic relationships, carbon allocation dynamics, biases of tree-ring data and noisy remote sensing data, which require further clarification for proper monitoring of pre- and post-drought forest trajectories. Our review aims to create an overview of the current literature and knowledge to understand the critical issues, needs and possible solutions that forest vulnerability research is addressing. We focus on Mediterranean forests located in a climate warming hotspot and showing a high vulnerability to increased aridification.

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Species specific vulnerability to increased drought in temperate and Mediterranean floodplain forests

Cited by 6 publications

References 47 publications

The latitudinal trend in genetic diversity and distinctiveness ofQuercus roburrear edge forest remnants calls for new conservation priorities

The latitudinal trend in genetic diversity and distinctiveness ofQuercus roburrear edge forest remnants calls for new conservation priorities

Caring for the forests of an inland area in the era of climate change: a case study of Basilicata, Southern Italy

Assessing Forest Vulnerability to Climate Change Combining Remote Sensing and Tree-Ring Data: Issues, Needs and Avenues

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