Drought Sensitiveness on Forest Growth in Peninsular Spain and the Balearic Islands

Peña-Gallardo, Marina; Vicente‐Serrano, Sergio M.; Camarero, J. Julio; Gazol, Antonio; Sánchez‐Salguero, Raúl; Domínguez‐Castro, Fernando; Kenawy, Ahmed El; Beguería-Portugés, Santiago; Gutiérrez, Emília; Luis, Martín de; Sangüesa‐Barreda, Gabriel; Novak, Klemen; Rozas, Vicente; Tíscar, Pedro Antonio; Linares, Juan Carlos; Castillo, Edurne Martínez del; Matamoros, Montserrat Ribas; García‐González, Ignacio; Silla, Fernando; Camisón, Álvaro; Génova, Mar; Olano, José Miguel; Longares, Luis Alberto; Hevia, Andrea; Galván, J. Diego

doi:10.3390/f9090524

Cited by 49 publications

(36 citation statements)

References 88 publications

(119 reference statements)

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“…Camarero, Olano, & Parras, 2010; De Luis, Gričar, Čufar, & Raventós, 2007;Gazol, Ribas, Gutiérrez, & Camarero, 2017;Novak et al, 2016;Pasho, Camarero, & Vicente-Serrano, 2012;Peña-Gallardo et al, 2018;Sarris, Christodoulakis, & Körner, 2007) and with the effects of climatic oscillators on tree growth trends in this area (reviewed inCamarero, 2011;Dorado-Liñán et al, 2017;Madrigal-González et al, 2017;Pasho, Camarero, Luis, & Vicente-Serrano, 2011;St George, 2014). Extending this previous evidence, our results highlight a critical importance of sustained, multidecadal negative effects of climatic teleconnections in forest carbon capture and resilience patterns…”

supporting

confidence: 76%

“…We suggest that multiple and non-mutually exclusive mechanisms are jointly operating at different timescales shaping the reported trends on forest carbon capture, including the three analysed climatic mechanisms ( Figure 6), and lagged effects of soil hydrological and tree ecophysiological processes. Referring to the ecophysiological processes, major negative effects of drought on the secondary growth of Aleppo pine have been mainly reported at an 8-12 month timescale after drought, but significant effects have been documented for longer time periods (lasting to 24-30 months; Pasho et al, 2011;Peña Gallardo et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

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Regime shifts of Mediterranean forest carbon uptake and reduced resilience driven by multidecadal ocean surface temperatures

Carnicer

Domingo‐Marimon

Ninyerola

et al. 2019

Global Change Biology

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The mechanisms translating global circulation changes into rapid abrupt shifts in forest carbon capture in semi‐arid biomes remain poorly understood. Here, we report unprecedented multidecadal shifts in forest carbon uptake in semi‐arid Mediterranean pine forests in Spain over 1950–2012. The averaged carbon sink reduction varies between 31% and 37%, and reaches values in the range of 50% in the most affected forest stands. Regime shifts in forest carbon uptake are associated with climatic early warning signals, decreased forest regional synchrony and reduced long‐term carbon sink resilience. We identify the mechanisms linked to ocean multidecadal variability that shape regime shifts in carbon capture. First, we show that low‐frequency variations of the surface temperature of the Atlantic Ocean induce shifts in the non‐stationary effects of El Niño Southern Oscillation (ENSO) on regional forest carbon capture. Modelling evidence supports that the non‐stationary effects of ENSO can be propagated from tropical areas to semi‐arid Mediterranean biomes through atmospheric wave trains. Second, decadal changes in the Atlantic Multidecadal Oscillation (AMO) significantly alter sea–air heat exchanges, modifying in turn ocean vapour transport over land and land surface temperatures, and promoting sustained drought conditions in spring and summer that reduce forest carbon uptake. Third, we show that lagged effects of AMO on the winter North Atlantic Oscillation also contribute to the maintenance of long‐term droughts. Finally, we show that the reported strong, negative effects of ocean surface temperature (AMO) on forest carbon uptake in the last decades are unprecedented over the last 150 years. Our results provide new, unreported explanations for carbon uptake shifts in these drought‐prone forests and review the expected impacts of global warming on the profiled mechanisms.

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supporting

confidence: 76%

Section: Discussionmentioning

confidence: 99%

Regime shifts of Mediterranean forest carbon uptake and reduced resilience driven by multidecadal ocean surface temperatures

Carnicer

Domingo‐Marimon

Ninyerola

et al. 2019

Global Change Biology

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“…These results provide additional support to previous studies on forest decline showing that tree growth is constrained by climatic and site conditions, besides being conditioned by structural factors (competition, defoliation, etc. ), in Mediterranean forests [19,57]. The majority of growth studies are based on the traditional forest inventory with diameter measurements.…”

Section: Effect Of Defoliation On Growthmentioning

confidence: 99%

“…Increased foliage removal increased the depression of growth, due to the lack of photosynthate, which is dependent on the amount of live foliage [59], thereby limiting the production of photosynthate available for maintenance and growth [31]. After crown damage, the available starch will be redirected to photosynthetic tissues (e.g., defoliation) instead of radial growth, which exacerbates the mechanisms leading to tree mortality [57,60]. Our findings also demonstrated that the strength of the correlation response of BAI to drought according to the defoliation level.…”

Section: Effect Of Defoliation On Growthmentioning

confidence: 99%

Contrasting Response to Drought and Climate of Planted and Natural Pinus pinaster Aiton Forests in Southern Spain

Rodriguez-Vallejo

Navarro-Cerrillo

2019

Forests

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Extreme drought events and increasing aridity are leading to forest decline and tree mortality, particularly in populations near the limits of the species distribution. Therefore, a better understanding of the growth response to drought and climate change could show the vulnerability of forests and enable predictions of future dieback. In this study, we used a dendrochronological approach to assess the response to drought in natural and planted forests of the maritime pine (Pinus pinaster Aiton) located in its southernmost distribution (south of Spain). In addition, we investigated how environmental variables (climatic and site conditions) and structural factors drive radial growth along the biogeographic and ecological gradients. Our results showed contrasting growth responses to drought of natural and planted stands, but these differences were not significant after repeated drought periods. Additionally, we found differences in the climate–growth relationships when comparing more inland sites (wet previous winter and late spring precipitation) and sites located closer to the coast (early spring precipitation). Response functions emphasized the negative effect of defoliation and drought, expressed as the June standard precipitation-evapotranspiration index calculated for the 12-month temporal scale and the mean temperature in the current February, on growth. The strong relationship between climatic variables and growth enabled acceptable results to be obtained in a modeling approach. The study and characterization of this tree species’ response to drought will help to improve the adaptive management of forests under climate change.

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“…Compared to SPI, it considers not only the precipitation supply, but also the atmospheric evaporative demand (Beguería et al, 2010;Vicente-Serrano et al, 2012b). This makes the index more informative of the actual drought effects over various natural systems and socioeconomic sectors (Bachmair et al, 2016;Bachmair et al, 2018;Kumar et al, 2016;Peña-Gallardo et al, 2018a;Peña-Gallardo et al, 2018b;Sun et al, 2018;Sun et al, 2016c;Vicente-Serrano et al, 2012b).…”

Section: Introductionmentioning

confidence: 99%

A pan-African high-resolution drought index dataset

Peng¹,

Dadson²,

Hirpa³

et al. 2019

Preprint

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Abstract. Droughts in Africa cause severe problems such as crop failure, food shortages, famine, epidemics and even mass migration. To minimize the effects of drought on water and food security over Africa, a high-resolution drought dataset is essential to establish robust drought hazard probabilities and to assess drought vulnerability considering a multi- and cross-sectorial perspective that includes crops, hydrological systems, rangeland, and environmental systems. Such assessments are essential for policy makers, their advisors, and other stakeholders to respond to the pressing humanitarian issues caused by these environmental hazards. In this study, a high spatial resolution Standardized Precipitation-Evapotranspiration Index (SPEI) drought dataset is presented to support these assessments. We compute historical SPEI data based on Climate Hazards group InfraRed Precipitation with Station data (CHIRPS) precipitation estimates and Global Land Evaporation Amsterdam Model (GLEAM) potential evaporation estimates. The high resolution SPEI dataset (SPEI-HR) presented here spans from 1981 to 2016 (36 years) with 5 km spatial resolution over the whole Africa. To facilitate the diagnosis of droughts of different durations, accumulation periods from 1 to 48 months are provided. The quality of the resulting dataset was compared with coarse-resolution SPEI based on Climatic Research Unit (CRU) Time-Series (TS) datasets, and Normalized Difference Vegetation Index (NDVI) calculated from the Global Inventory Monitoring and Modeling System (GIMMS) project, as well as with root zone soil moisture modelled by GLEAM. Agreement found between coarse resolution SPEI from CRU TS (SPEI-CRU) and the developed SPEI-HR provides confidence in the estimation of temporal and spatial variability of droughts in Africa with SPEI-HR. In addition, agreement of SPEI-HR versus NDVI and root zone soil moisture – with average correlation coefficient (R) of 0.54 and 0.77, respectively – further implies that SPEI-HR can provide valuable information to study drought-related processes and societal impacts at sub-basin and district scales in Africa. The dataset is archived in Centre for Environmental Data Analysis (CEDA) with link: https://doi.org/10.5285/bbdfd09a04304158b366777eba0d2aeb (Peng et al., 2019a)

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Drought Sensitiveness on Forest Growth in Peninsular Spain and the Balearic Islands

Cited by 49 publications

References 88 publications

Regime shifts of Mediterranean forest carbon uptake and reduced resilience driven by multidecadal ocean surface temperatures

Regime shifts of Mediterranean forest carbon uptake and reduced resilience driven by multidecadal ocean surface temperatures

Contrasting Response to Drought and Climate of Planted and Natural Pinus pinaster Aiton Forests in Southern Spain

A pan-African high-resolution drought index dataset

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