Luis Cayuela

Luis Cayuela
King Juan Carlos University | URJC · Biology and Geology, Physics and Inorganic Chemistry

PhD

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126
Publications
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Publications

Publications (126)
Book
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El libro va dirigido a estudiantes, profesores e investigadores del ámbito de las ciencias naturales que deseen iniciarse en el mundo de la investigación, entender en profundidad algunas de las principales técnicas de análisis de datos utilizadas en el ámbito de la ecología, o conocer la implementación de dichas técnicas en R, uno de los lenguajes...
Article
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Aim Holm oak (Quercus ilex L.) is regarded as a keystone plant species. Trophic interactions may affect the distribution and abundance of phytophagous species, but the number of arthropod species that use holm oak as a food resource and their levels of host specificity are not yet known. Here, we aimed to quantify these species, their feeding strat...
Article
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Assessing biodiversity status and trends in plant communities is critical for understanding, quantifying and predicting the effects of global change on ecosystems. Vegetation plots record the occurrence or abundance of all plant species co‐occurring within delimited local areas. This allows species absences to be inferred, information seldom provid...
Article
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Gradients in elevation impose changes in environmental conditions, which in turn modulate species distribution and abundance as well as the interactions they maintain. Along the gradient, interacting species (e.g., predators, parasitoids) can respond to changes in different ways. This study aims to investigate how egg parasitism of a forest pest, t...
Article
Prey detection and selection by birds can be influenced by prey coloration. Whereas certain colours can indicate to predators the unpalatability of prey (i.e. aposematism), other colours can render prey cryptic against the background. However, there are discrepancies in the response of birds to prey coloration reported in different studies. Such di...
Article
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Distinguising between natural forests from exotic tree plantations is essential to get an accurate picture of the world’s state of forests. Most exotic tree plantations support lower levels of biodiversity and have less potential for ecosystem services supply than natural forests, and differencing them is still a challenge using standard tools. We...
Article
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Our knowledge about the structure and function of Andean forests at regional scales remains limited. Current initiatives to study forests over continental or global scales still have important geographical gaps, particularly in regions such as the tropical and subtropical Andes. In this study, we assessed patterns of structure and tree species dive...
Article
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Many studies have tried to assess the role of both deterministic and stochastic processes in community assembly, yet a lack of consensus exists on which processes are more prevalent and at which spatial scales they operate. To shed light on this issue, we tested two non‐mutually exclusive, scale‐dependent hypotheses: 1) that competitive exclusion d...
Article
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Tropical montane forests (TMFs) play an important role as a carbon reservoir at a global scale. However, there is a lack of a comprehensive understanding on the variation in carbon storage across TMF compartments [namely aboveground biomass (AGB), belowground biomass (BGB), and soil organic matter] along altitudinal and environmental gradients and...
Article
Habitat destruction is the single greatest anthropogenic threat to biodiversity. Decades of research on this issue have led to the accumulation of hundreds of data sets comparing species assemblages in larger, intact, habitats to smaller, more fragmented, habitats. Despite this, little synthesis or consensus has been achieved, primarily because of...
Article
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Questions: Vegetation-plot records provide information on presence and cover or abundance of plants co-occurring in the same community. Vegetation-plot data are spread across research groups, environmental agencies and biodiversity research centers, and thus, are rarely accessible at continental or global scales. Here we present the sPlot database,...
Article
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Plant functional traits directly affect ecosystem functions. At the species level, trait combinations depend on trade-offs representing different ecological strategies, but at the community level trait combinations are expected to be decoupled from these trade-offs because different strategies can facilitate co-existence within communities. A key r...
Article
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Background: Discrepancies in the shape of the productivity-diversity relationship may arise from differences in spatial scale. We hypothesised that there is a grain size effect on the productivity-diversity relationship. Aims: To determine the effect of three sampling grain sizes on the productivity- diversity relationship. Methods: We applied gen...
Article
1.Facilitation studies have previously focused on the effects of plant‐plant interactions on species richness and, more recently, on functional traits or phylogenetic aspects. Little is known, however, about the simultaneous effects that facilitation have on overall biodiversity, jointly considering taxonomic, functional and phylogenetic diversity....
Article
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The idea that noncrop habitat enhances pest control and represents a win-win opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on p...
Article
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Background Canopy structure, defined by leaf area index (LAI), fractional vegetation cover (FCover) and fraction of absorbed photosynthetically active radiation (fAPAR), regulates a wide range of forest functions and ecosystem services. Spatially consistent field-measurements of canopy structure are however lacking, particularly for the tropics. Me...
Article
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Research institutions from the Global North have made significant contributions to the knowledge of tropical ecosystems, but contributions have varied greatly between countries. We show that European nations that share a language, cultural affinity, and/or retain social and political ties with tropical countries (e.g., those with an overseas histor...
Article
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The study by Bastin et al. (Reports, 12 May 2017, p. 635) is based on an incomplete delimitation of dry forest distribution and on an old and incorrect definition of drylands. Its sampling design includes many plots located in humid ecosystems and ignores critical areas for the conservation of dry forests. Therefore, its results and conclusions may...
Article
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Regulation of agricultural pests managing their natural enemies represents an alternative to chemical pesticides. We assessed the potential of insectivorous birds as pest regulators in woody crops located in central Spain. A total of 417 nest boxes installed in five field study sites (one vineyard, two fruit orchards, and two olive groves) were mon...
Data
Model-averaged estimates, standard errors (Std. Error) and relative importance (wi) of selected variables in the best models of bird breeding at the Abadía Retuerta vineyard and the Concejiles and Chaparrito fruit tree orchards. The intercept summarizes the level in 2013. Estimated variance and standard deviation (Std. Dev) are shown for random eff...
Data
Model-averaged estimates and standard errors (Std. Error) of the best models of predation of sentinel caterpillar samples (%) at the Abadía Retuerta vineyard and the Concejiles and Chaparrito fruit tree orchards. The intercept summarizes the levels close to active nest boxes and distant areas without nest boxes. Estimated variance and standard devi...
Data
Disaggregated estimates of food consumption (grams) by insectivorous birds during the breeding season, based on published consumption rates for breeding Great tit (Parus major), weight of the other breeding insectivorous bird species relative to the weight of Great tit, number of breeding pairs and number of chicks per breeding pair in the studied...
Data
Mean temperature and precipitation at the studied vineyard and fruit orchards between February and June in 2012–2016. Except for a preliminary trial at the vineyard, all field work was carried out from 2013 to 2016, and nest box exploration, occupancy and breeding by insectivorous birds occurred between February and July each year. Data are not rep...
Data
Predation of sentinel samples of Greater wax moth (Galleria mellonella) caterpillars close to, or farther away from, active nest boxes and of paired sentinel samples in distant areas without nest boxes. Values shown are percentage means ± standard deviations. (DOC)
Data
Use of nest boxes at each field site and year. Category 6 refers mostly to rodents, particularly Garden dormouse. (DOC)
Preprint
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The recent Global Drylands Assessment of forests is based on both an incomplete delimitation of dry forests distribution and on an old and incorrect delimitation of drylands. Its sampling design includes a large proportion of plots located in humid ecosystems and ignores critical areas for the conservation of dry forests. Therefore its results and...
Article
Full-text available
Premise of the study: Two, nonmutually exclusive, mechanisms-competition for resources and architectural constraints-have been proposed to explain the proximal to distal decline in flower size, mass, and/or femaleness in indeterminate, elongate inflorescences. Whether these mechanisms also explain unusual positional effects such as distal to proxi...
Article
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Understanding and predicting the likely response of ecosystems to climate change are crucial challenges for ecology and for conservation biology. Nowhere is this challenge greater than in the tropics as these forests store more than half the total atmospheric carbon stock in their biomass. Biomass is determined by the balance between biomass inputs...
Data
Relationship between measured biomass with the Chave et al. (2005) and Alvarez et al. (2012) models, for 156 plots of Colombia. The lines represent the adjusted generalized linear model: ln (AGB B1) = a + b * ln (AGB B2) + C. Where B1 = measured biomass in this study with Alvarez et al. (2012), B2 = measured biomass with the Chave et al. (2005), an...
Data
Relations between the biomass predicted by the pantropical maps of Baccini et al. (2012) and Saatchi et al. (2011), and the biomass measured in this study. The black solid line represents the adjusted linear model and the red dotted line the 1: 1 ratio between both values. For this analysis, we only use the 156 Colombian plots for which we have the...
Article
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The understanding of the spatial and temporal patterns in land use and land cover (LULC) change is a key issue for conservation efforts. In the Chilean hotspot, different studies have attempted to understand variations of LULC change. Nevertheless, a broader understanding of common patterns and variability of LULC over the entire range of the hotsp...
Article
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Approaches based on the concept of ecosystem services need analyses of the sets of spatially correlated services (i.e. bundles) and of the external factors that modify the ecosystem service supply (i.e. drivers of change). At present, appropriate methods to analyse bundles and drivers of change are still under development. This study proposes a met...
Chapter
World population is exponentially growing and with it, the need for quality food that supports this expansion. Current agricultural techniques rely on a massive use of chemical inputs that at the end jeopardise the sustainability of crops. New approaches are oriented towards the promotion of natural control mechanisms that guarantee biodiversity th...
Article
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The Guadiamar River (SW Iberian Peninsula) received a major toxic spill (6 hm3) from a tailing pond in 1998 that defaunated 67 km of the main stem. Following early mud removal works, the fish assemblage was annually monitored at four affected sampling sites and one located in the upstream non-affected reach of the Guadiamar River as reference. Fish...
Article
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The statistical framework of rarefaction curves and asymptotic estimators allows for an effective standardization of biodiversity measures. However, most statistical analyses still consist of point comparisons of diversity estimators for a particular sampling level. We introduce new randomization methods that incorporate sampling variability encomp...
Article
Although trees have high economic, cultural and ecological value, increasing numbers of species are potentially at risk of extinction because of forest loss and degradation as a result of human activities, including overharvesting, fire and grazing. Emerging threats include climate change and its interaction with the spread of pests and diseases. T...
Article
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Keywords: Deforestation Timber plantation Chilean temperate forest Land use e land cover change a b s t r a c t Temperate forest represents the smallest area among the main world's forest biomes, but is one of those most threatened by forest loss. Chile contains most of the temperate forest in South America and more than half of the temperate fores...
Article
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The third largest biodiversity hotspot of the world, Mesoamerican forests are declining due to human pressures. Based on species distribution models calibrated for 1224 native tree species in Mesoamerica, we identified high-value forest conservation areas (FCA) at the resolution of a 10 km × 10 km cells using the Zonation Reserve Selection software...
Article
QuestionWhat are the conditions necessary for the establishment and development of seedlings and an early stage sapling community in an old-growth cloud forest? Cloud forests are one of the most threatened ecosystems in the world; however, recruitment patterns in these forests remain largely unknown.LocationCloud Forest, Northern Peruvian Andes.Met...
Article
Although several studies have reported rates of deforestation and spatial patterns of native forest fragmentation , few have focused on the role of natural forest regeneration and exotic tree plantations on landscape dynamics. The objective of this study was to analyze the dynamics of land cover change in order to test the hypothesis that exotic tr...
Article
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Ground cover vegetation is often added or allowed to generate to promote conservation bio-logical control, especially in perennial crops. Nevertheless, there is inconsistent evidence of its effectiveness, with studies reporting positive, nil or negative effects on pest control. This might arise from differences between studies at the local scale (e...
Article
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Many studies analyzing the relative contribution of soil properties versus distance-related processes on plant species composition have focused on lowland tropical forests. Very few have investigated two forest types simultaneously, to contrast ecological processes that assemble the communities. This study analyses-at the landscape scale-the relati...
Article
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Though biodiversity can have an effect on biological control of pests, there is debate about whether a single species or a more complex assemblage of natural enemies will exert better control of the pest population. We explore the relationship between numbers of different taxa of natural enemies in an olive grove to identify cases of significant po...