Jaime Madrigal-González

Jaime Madrigal-González
Universidad de Valladolid | UVA · Departamento de Ciencias Agroforestales

PhD

About

68
Publications
18,811
Reads
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Introduction
I am primary interested in mechanisms underlying species assembly and the emergent functional and structural properties at the community and ecosystem levels. My current research is focused in the role of climatic extreme events and biodiversity driving tree growth and forest productivity in European forests (projects: CARBO-EXTREME and FUNDIV-Europe)
Additional affiliations
November 2017 - November 2018
Institute for Environmental Sciences, University of Geneva
Position
  • Scientific collaborator II
October 2017 - December 2019
Institute for Environmental Sciences, University of Geneva
Position
  • Scientific collaborator

Publications

Publications (68)
Article
Full-text available
The evolution of resource use in herbivores has been conceptualized as an analog of the theory of island biogeography, assuming that plant species are islands separated by phylogenetic distances. Despite its usefulness, this analogy has paradoxically led to neglecting real biogeographical processes in the study of macroevolutionary patterns of herb...
Article
Full-text available
Neglecting tree size and stand structure dynamics might bias the interpretation of the diversity-productivity relationship in forests. Here we show evidence that complementarity is contingent on tree size across large-scale climatic gradients in Europe. We compiled growth data of the 14 most dominant tree species in 32,628 permanent plots covering...
Article
Full-text available
The North Atlantic Oscillation (NAO) depicts annual and decadal oscillatory modes of variability responsible of dry spells over the European continent. The NAO therefore holds a great potential to evaluate the role, as carbon sinks, of water-limited forests under climate change. However, uncertainties related to inconsistent responses of long-term...
Article
Full-text available
According to the competitive exclusion principle, species with low competitive abilities should be excluded by more efficient competitors; yet, they generally remain as rare species. Here, we describe the positive and negative spatial association networks of 326 disparate assemblages, showing a general organization pattern that simultaneously suppo...
Article
Full-text available
More tree species can increase the carbon storage capacity of forests (here referred to as the more species hypothesis) through increased tree productivity and tree abundance resulting from complementarity, but they can also be the consequence of increased tree abundance through increased available energy (more individuals hypothesis). To test thes...
Article
Full-text available
Key message In the Mediterranean region, the recovery of riparian trees after wounds can be jeopardized under drier climate condition and cooccurrence of extreme flood events. Abstract Climate change could impair riparian vegetation dynamics through more intense and frequent climatic extreme events such as flash flooding. However, it is still poor...
Article
Full-text available
Legacies of past climate conditions and historical management govern forest productivity and tree growth. Understanding how these processes interact and the timescales over which they influence tree growth is critical to assess forest vulnerability to climate change. Yet, few studies address this issue, likely because integrated long-term records o...
Poster
Full-text available
tring and easyclimate: two R packages to analyze long-term responses of forest ecosystems
Chapter
The Mediterranean Basin is highly exposed to climate change, particularly to increased aridity and to more intense and frequent extreme climatic events such as severe droughts. Several temperate pine species have their southern distribution limit in the Mediterranean Basin, with low-altitude populations and dense, even-aged reforestations being esp...
Article
Full-text available
Forests are intrinsically coupled to human dynamics, both temporally and spatially. This evolution is conditioned by global changes in climatic conditions (teleconnections) and distant so-cio-economical processes (telecoupling). The main goal of this study is to describe the teleconnec-tions and telecoupling dynamics that have shaped structure and...
Article
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Key message Competitive interactions change over time and their influence on tree growth is intensified during drought events in marginal Scots pine populations. Abstract Competition is a key factor driving forest dynamics and stand structure during the course of stand development. Although the role neighbourhood competition on stand dynamics has...
Article
The influence of climate on seed or fruit production and tree growth is a central question in forest ecology, with a key role on forest dynamics. However, the mechanisms linking inter- and intra-annual climate variability, fruiting and growth remain poorly understood, although they seem to be largely species-specific. The resource-matching hypothes...
Article
Large-scale climate indices, such as the Atlantic Multidecadal Oscillation (AMO), the East-Atlantic pattern (EA), the North-Atlantic Oscillation (NAO) and the Western Mediterranean Oscillation (WeMO), are recognized as important drivers of tree growth and forest productivity in south-western Europe. However, it is still poorly understood whether sp...
Article
Full-text available
Abstract. Forest research has addressed the importance of an improved understanding of droughts -tocks interactions in the dry edge of tree species range. Nonetheless, more efforts are still critically needed to link up the multiple ways by which climatic stressors can trigger tree mortality, including population-level determinants and management....
Article
Full-text available
Mediterranean holm oak forests are subjected to chronic seasonal droughts coinciding with the warmest conditions during the summer. Importantly, climate change projections support increased frequency and intensity of droughts in the future. In order to evaluate whether thinning practices can be used as efficient adaptation strategies to climate cha...
Article
Global warming can jeopardize important ecosystem functions and services in sensitive Neotropical mountain areas. However, untangling the relative roles of natural climate variability pattern from current global warming trends still represent a major challenge. Here, we propose a novel analytical approach based on Structural Equation Models to eval...
Article
Full-text available
Climate-vegetation relations in alpine systems play a pivotal role in regulating hydrology and have thus become a research priority in a context of ongoing climate change. In this paper, we investigate how one of the most dominant shrub species in alpine páramo ecosystems of Central America, Hypericum irazuense, responds to changes in precipitation...
Article
Research in the last decades supports the idea that certain species, namely ‘nurse species’, can enhance ecosystem function and species diversity in their vicinity through amelioration of the abiotic environment. However, few studies have explored whether nurse plants can promote functional diversity at the microhabitat level. Here, we evaluated th...
Article
Understanding species' tolerance to recurrent extreme droughts is key to predict species' performance and forest dynamics under ongoing climate change. Inter-specific differences in juvenile responses can largely shape forest composition and structure. However, the vulnerability of tree species is typically evaluated in adult canopy dominant indivi...
Article
Techniques for retrospective analysis of size dynamics at annual resolution remain poorly developed in lichens in general, and fruticose lichens in particular. Only a few attempts in very high latitudes suggested that growth might be studied as a chronosequence of inter-nodal branch elongations. Here we evaluated, for the first time, this hypothesi...
Article
Full-text available
Research Highlights. This research highlights the importance of environmental gradients in shaping tree growth responses to global change drivers and the difficulty of attributing impacts to a single directional driver. Background and Objectives: Temperature increase associated with climate change might strongly influence tree growth and forest pro...
Article
Full-text available
Los efectos del cambio global son cada vez más evidentes en los ecosistemas forestales. La implantación de un sistema de indicadores de adaptación al cambio climático (ACC) permite evaluar el estado del sistema y establecer medidas que favorezcan capacidades para responder y ajustarse al cambio climático. El presente trabajo desarrolla un sistema d...
Article
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There are many biometric differences between the males and females of the European pond turtle (Emys orbicularis) as regards their size, colouring, the shape of the plastron, tail, etc. The males use their claws to grasp the female during copulation and hence sexual selection should favour the males that have larger claws, which allow them to grasp...
Poster
Full-text available
Increased temperatures and more frequent extreme droughts are inducing alterations in forest functioning and composition, especially in Mediterranean forests. Understanding coexistence and how tree species respond to drought events along the ontogeny is essential to evaluate forest dynamics under climate change. Here, we evaluated growth resilience...
Article
Full-text available
Aims Lianas are expected to influence composition, structure and functioning of forest systems due to unequal distribution across the potential set of host plants. However, our understanding of mechanisms associated with preferences for specific hosts is still limited, and so is our ability to discern between endogenous and exogenous forces drivin...
Article
Climate change can impair ecosystem functions and services in extensive dry forests worldwide. However, attribution of climate change impacts on tree growth and forest productivity is challenging due to multiple inter-annual patterns of climatic variability associated with atmospheric and oceanic circulations. Moreover, growth responses to rising a...
Article
Full-text available
Recruitment is a bottleneck for forest regeneration especially in semi-arid Mediterranean environments. Ensuring natural forest regeneration is vital for preserving ecosystem function under climate warming and increased frequency and intensity of extreme droughts. Interspecific positive interactions are of paramount importance in these ecosystems....
Article
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Ongoing climate warming has been demonstrated to impact the cryosphere in the Indian Himalayas, with substantial consequences for the risk of disasters, human well-being, and terrestrial ecosystems. Here, we present evidence that the warming observed in recent decades has been accompanied by increased snow avalanche frequency in the Western Indian...
Article
With ongoing degradation of natural forests and spread of forest plantations, plantations must play an increasingly important role in biodiversity conservation. Study of habitat selection and reproductive success of surrogate species in plantations can guide forest management decisions for increasing biodiversity. In this paper we studied the suita...
Chapter
Oaks are a widely represented woody species across the main European forest biomes, ranging from semi-arid Mediterranean shrub lands to cool temperate and transitional boreal forests. We provide quantitative evidence of large-scale distribution and abundance patterns of oaks across Europe. In addition, we present key demographic processes, such as...
Article
Full-text available
Climate change in the Mediterranean, associated with warmer temperatures and more frequent droughts, is expected to impact forest productivity and the functioning of forests ecosystems as carbon reservoirs in the region. Climate warming can positively affect forest growth by extending the growing season, whereas increasing summer drought generally...
Article
Intense droughts combined with increased temperatures are one of the major threats to forest persistence in the 21(st) century. Despite the direct impact of climate change on forest growth and shifts in species abundance, the effect of altered demography on changes in the composition of functional traits is not well known. We sought to: (1) quantif...
Article
Full-text available
Human activities and traditional land uses are recognized as major determinants of species distribution and landscape configuration worldwide. This is particularly true in the Mediterranean Basin where a strong imprint of human activities over millennia on natural ecosystems has been recognized. One of the most important anthropogenic factors in th...
Article
Nestedness is a common pattern in interaction networks. However, its ecological and evolutionary meaning is under debate. Evidence shows that nestedness in mutualistic networks may be just a consequence of the species–abundance distribution. This has been questioned as abundance itself could be influenced by differences in generalism between specie...
Article
Concern is rising on whether forest function and structure will recover from drought-related impacts, which are expected to increase under global warming. Understanding demographic mechanisms underlying resilience (i.e. capacity of a system or individual to restore its structure and function prior to a disturbance) is critical for properly assessin...
Article
Biodiversity loss and climate-driven ecosystem modification are leading to substantial changes in forest structure and function. However, the effects of diversity on demographic responses to the environment are poorly understood. We tested the diversity hypothesis (measured through functional diversity) and the mass ratio hypothesis (measured throu...
Article
The relative contribution of community functional diversity and composition to ecosystem functioning is a critical question in ecology in order to enable better predictions of how ecosystems may respond to a changing climate. However, there is little consensus about which modes of functional biodiversity are most important for tree growth at large...
Article
Full-text available
Increased aridity may have severe effects on productivity of dry forests. However, it remains unclear to which degree the positive effects of elevated CO2 (both increased carboxylation rates and enhanced water-use efficiency) may offset the negative effects of drought and climate warming. In forest ecosystems it is particularly challenging to evalu...
Presentation
Full-text available
Scots pine forests subjected to continental Mediterranean climates undergo cold winter temperatures and drought stress. Recent climatic trends towards warmer and drier conditions across the Mediterranean Basin might render some of these pine populations more vulnerable to drought-induced growth decline at the Southernmost limit of the species distr...
Article
Full-text available
The modification of typical age-related growth by environmental changes is poorly understood, In part because there is a lack of consensus at individual tree level regarding age-dependent growth responses to climate warming as stands develop. To increase our current understanding about how multiple drivers of environmental change can modify growth...
Article
Full-text available
European forests have a prominent role in theglobal carbon cycle and an increase in carbon storage has been consistently reported during the twentieth century. Any further increase in forest carbon storage, however, could be hampered by increases in aridity and extreme climatic events. Here, we use forest inventory data to identify the relative imp...
Article
Likely tree growth responses to climate change remain a controversial issue, in part because these responses may differ across biomes and forest communities. In the Mediterranean basin - one of the most vulnerable regions according to climatic change scenarios- there are experimental and modeling evidences of both positive and negative tree growth...
Article
Questions: (1) Does shrub encroachment affect the regeneration of two contrasting species of oak along an elevation gradient in the west-central Iberian Peninsula? (2) Do different nurse shrubs have any relevant species-specific effects along the gradient? (3) Does shrub encroachment affect the location of the bioclimatic limit between these two oa...
Data
Full-text available
This report describes an international summer course, ‘‘Tree Rings, Climate, Natural Resources, and Human Interaction’’, held in Valsaín, Spain, in summer of 2012. The course, with 14 participants from three countries (Spain, Algeria, and Russia), included basic training in dendrochronology skills as well as applied projects in dendroclimatology, d...
Article
Full-text available
The Atacama Desert is one of the most stressful environments worldwide and represents a strong barrier for the establishment of native and non-native plants. In this study, we report the establishment of a non-native annual plant through facilitation by a native endemic cactus in a relatively undisturbed coastal area in north-central Chile. Soil co...
Article
Full-text available
This report describes an international summer course, ‘‘Tree Rings, Climate, Natural Resources, and Human Interaction’’, held in Valsaín, Spain, in summer of 2012. The course, with 14 participants from three countries (Spain, Algeria, and Russia), included basic training in dendrochronology skills as well as applied projects in dendroclimatology, d...
Chapter
Full-text available
Mediterranean forests may undergo important changes with climate warming. Among the most important forest functions, productivity and carbon storage could dramatically diminish as a consequence of increasing water deficits and recurrent extreme drought events. Management of forest stand structure and age distributions can be efficient practices to...
Article
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Durante los años 2006-09 se ha llevado a cabo en Castilla y León un proyecto sobre galápagos autóctonos con el fin de aportar datos actuales de su esta do de distribución y su estado de conservación. Los resultados muestran que el sur-oeste de Zamora y alguna zona del norte, oeste de Salamanca y el sur de Ávila presentan las mejores poblaciones tan...
Article
Full-text available
Question: Could inter- and intra-specific shrub variability override abiotic stress in driving shrub-grass interactions along an altitudinal gradient? Location: Eleven sites along an altitudinal gradient in the mediterranean-temperate transition of the central western Iberian Peninsula (Salamanca province, Spain). Methods: Among study sites, differ...
Article
Full-text available
The abundance of exotic plants is thought to be limited by competition with resident species (including plants and generalist herbivores). In contrast, observations in semiarid Chile suggest that a native generalist rodent, the degu (Octodon degus), may be facilitating the expansion of exotic annual plants. We tested this hypothesis with a 20-year...
Article
Full-text available
In arid and semi-arid ecosystems, the presence of woody neighbours affects the existence of several herbaceous species by modifying critical aspects of the environment (e.g., soil humidity, nutrient content or light availability) beneath their canopies. Herbaceous species growing in the understory of Pinus pinaster may be distinct from those in ope...
Conference Paper
Background/Question/Methods The separate effects of shrubs, herbivores and winter rainfall on ephemeral communities have been studied for decades in a worldwide range of arid/semi-arid ecosystems. These three abiotic/biotic factors appear to be determining elements for the assembly of ephemeral herbaceous species in xeric environments. However, li...