Scots pine (Pinus sylvestris L.) mortality is explained by the climatic suitability of both host tree and bark beetle populations

Jaime, Luciana; Batllori, Enric; Margalef-Marrase, Jordi; Navarro, María Ángeles Pérez; Lloret, Francisco

doi:10.1016/j.foreco.2019.05.070

Cited by 55 publications

(30 citation statements)

References 102 publications

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“…Importantly, these possible niche underestimations could vary depending on species distribution ranges, being particularly relevant for rare species. In addition to the error derived from the non‐inclusion of climatic variability, using systematically 30‐50 years averaged climatic periods could be especially pernicious when characterizing the climatic niche of short‐lived species, as in pests (Jaime et al., 2019)―since these emerge explosively as a consequence of specific climatic conditions that appear in particular years of the period―, or in case of non‐sessile organisms―which can buffer their environment variability by movement, thus only perceiving the climate of the locations during specific favourable time periods (Lembrechts et al., 2019)―. In these cases, it is particularly important to know the specific moment of species occurrence and use the corresponding temporal resolution (Bateman et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Temporal variability is key to modelling the climatic niche

Pérez‐Navarro

Broennimann

Esteve

et al. 2020

Diversity and Distributions

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Aim Niche‐based species distribution models (SDMs) have become a ubiquitous tool in ecology and biogeography. These models relate species occurrences with the environmental conditions found at these sites. Climatic variables are the most commonly used environmental data and are usually included in SDMs as averages of a reference period (30–50 years). In this study, we analyse the impact of including inter‐annual climatic variability on the estimation of species niches and predicted distributions when assessing plant demographic response to extreme climatic episodes. Location Mediterranean basin, SE Iberian Peninsula. Methods We first characterized species niches with inter‐annual and average climate in the same environmental space. We then compare the respective capacities of climatic suitability obtained from averaged climate‐based and from inter‐annual variability‐based niches to explain population demographic responses to extreme drought. Furthermore, we assessed the relative increase in niche size when including climatic variability for a set of Mediterranean species exhibiting a wide range of distribution areas. Results We found that climatic suitability obtained from inter‐annual variability‐based niches showed higher explanatory capacity than average climate‐based suitability, especially for populations living in climatically marginal conditions, although both niches quantifications significantly explained species demographic responses. In addition, species with restricted distribution ranges increased relatively more their niche space when considering climatic variability, probably because in widely distributed species spatial variability compensates for temporal variability. Main conclusions The common use of climatic averages when characterizing species niches could lead to underestimations of species distribution and misunderstanding of demographic behaviour, with implications for conservation plans derived from SDMs, for example, overestimations of species extinction risk under climate change, or underestimations of alien species invasion’ risk. We highlight that including climatic variability in niche modelling can be particularly important when dealing with species with restricted distribution and populations at the margin of their species niche.

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Section: Discussionmentioning

confidence: 99%

Temporal variability is key to modelling the climatic niche

Pérez‐Navarro

Broennimann

Esteve

et al. 2020

Diversity and Distributions

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“…In total, 59 species had DT information for at least one metric (Table S1). Although localized insect outbreaks have damaged some forests in the study area (Cardil et al, 2017; Jaime et al, 2019), the impact of such pests is typically much lower than in North America (cf. van Lierop et al, 2015), and they are not known to impact forest demography at broad spatial scales in the study area.…”

Section: Methodsmentioning

confidence: 99%

Low forest productivity associated with increasing drought‐tolerant species is compensated by an increase in drought‐tolerance richness

García‐Valdés

Vayreda

Retana

et al. 2021

Global Change Biology

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Many temperate forests are changing in composition due to a combination of changes in land‐use, management and climate‐related disturbances. Previous research has shown that in some regions these changes frequently favour drought‐tolerant tree species. However, the effects of these changes in composition on forest functioning (e.g. productivity) are unclear. We studied 25 years of change in individual tree biomass growth, ingrowth and mortality, and community composition and total plot biomass across 2663 permanent forest plots in Catalonia (NE Spain) comprising 85,220 trees of 59 species. We focused on the relationship between community‐level forest productivity and drought tolerance (DT), which was estimated using hydraulic traits as well as biogeographic indicators. We found that there was a small increase (1.6%–3.2% on average) in community‐mean DT (DTcwm) during the study period, concurrent with a strong increase (12.4%–19.4% on average) in DT richness (DTric; i.e. trait range). Most importantly, we found that the mean DT was negatively related to forest productivity, which was explained because drought‐tolerant tree species have lower tree‐level growth. In contrast, DT richness was strongly and positively related to forest productivity, probably because it allowed for a more stable production along wet and dry periods. These results suggest a negative impact of ongoing climate change on forest productivity mediated by functional composition shifts (i.e. selection of drought‐tolerant species), and a positive effect of increased DT richness as a consequence of land‐use legacies. Such a trend towards functional diversification, although temporary, would increase forests’ capacity to resist drought and place them in a better position to face the expected change in climate.

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“…Sanitary felling is carried out primarily in the most vulnerable stands . In the last decade, in many regions, the health condition of Scots pine (Pinus sylvestris L.) forests has sharply deteriorated due to a change in climate and an increasing anthropogenic load (Shvidenko et al 2017), which has created conditions for mass propagation of stem pests (Wermelinger et al 2008;Colombari et al 2012Colombari et al , 2013Siitonen 2014;Björkman et al 2015;Jaime et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Forest site conditions and the threat for insect outbreaks in the Scots pine stands of Polissya

Andreieva

Goychuk

2020

Folia Forestalia Polonica

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Scots pine (Pinus sylvestris L.) is the most spread forest tree species in Polissya and the most damaged by foliage browsing and stem insects. The aim of this study was to reveal the changes in the distribution of different forest site conditions for 2010–2019 in Scots pine forests of the selected forestry enterprises of Polissya and possible consequences for the spread of foliage browsing insects. Database of Production Association ‘Ukrderzhlisproekt’ (by 2010 and 2019) was analysed for five State Forest Enterprises (FE) that are located in the Central (Zhytomyr Region) and Western (Rivne and Volyn Regions) Polissya, where the large scale outbreaks of stem pests were registered last decade.The types of forest site conditions were designated in accordance with the Ukrainian typology. Distribution of the forest area by trophotops and hygrotops was evaluated for the forest-covered area, for Scots pine stands, and for pure Scots pine stands in 2010 and in 2019.For 2010–2019, the area of all Scots pine forests and its proportion in the forest-covered area has significantly decreased in the most of analysed forest enterprises. The change for 2010–2019 in the distribution both by the tropho-tops and by hygrotops of the entire forest-covered area, the area of all Scots pine forests and pure pine forests is not statistically significant. However, in assessment year 2019, the proportion of stands in the moist types of forest site conditions slightly increased. It may be the result of the stands’ mortality in the driest sites after an outbreak of bark beetles. A greater decrease in the proportion of Scots pine forest area in the dry poor, fresh poor, and dry relatively poor forest site conditions was found in the western direction. Therefore, the noted decrease in the foci areas of foliage browsing insects in Polissya in 2010–2012 compared to the 2000–2002 could be associated with a decrease in the most preferred stands, namely the poorest and driest types of forest site conditions.

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Scots pine (Pinus sylvestris L.) mortality is explained by the climatic suitability of both host tree and bark beetle populations

Cited by 55 publications

References 102 publications

Temporal variability is key to modelling the climatic niche

Temporal variability is key to modelling the climatic niche

Low forest productivity associated with increasing drought‐tolerant species is compensated by an increase in drought‐tolerance richness

Forest site conditions and the threat for insect outbreaks in the Scots pine stands of Polissya

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