A5056505601- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Plant Parasitism and Resistance
- Insect and Arachnid Ecology and Behavior
- Animal Ecology and Behavior Studies
- Species Distribution and Climate Change
- Avian ecology and behavior
- Insect and Pesticide Research
- Genetic diversity and population structure
- Wildlife Ecology and Conservation
- Mediterranean and Iberian flora and fauna
- African Botany and Ecology Studies
- Botany and Plant Ecology Studies
- Forest Ecology and Biodiversity Studies
- Fire effects on ecosystems
- Rangeland Management and Livestock Ecology
- Plant Reproductive Biology
- Plant Physiology and Cultivation Studies
- Horticultural and Viticultural Research
- Animal Nutrition and Physiology
- Forest Management and Policy
- Bird parasitology and diseases
- Conservation, Biodiversity, and Resource Management
- Historical and socio-economic studies of Spain and related regions
- Chromosomal and Genetic Variations
Universidad de Jaén
2015-2024
Instituto Andaluz de Ciencias de la Tierra
2022-2024
Instituto de Investigación Biosanitaria de Granada
2020
Instituto de Investigaciones Agrobiológicas de Galicia
2017
Consejo Superior de Investigaciones Científicas
2002-2005
Estación Biológica de Doñana
2002
Hospital Universitario Ramón y Cajal
1997
Universidad de Granada
1990-1992
Summary The effects of the present biodiversity crisis have been largely focused on loss species. However, a missed component that often accompanies or even precedes species disappearance is extinction ecological interactions. Here, we propose novel model (i) relates diversity both and interactions along gradient environmental deterioration (ii) explores how rate functions, consequently ecosystem services, can be accelerated restrained depending covaries with loss. We find are decoupled,...
Summary 1 Little is known about the consequences of seed‐disperser activity for plant demography. We compared spatial patterns seed dispersal generated by frugivorous birds with those seedling survival shrub Olea europaea . examined relative importance in determining recruitment and tested whether initial pattern persisted throughout recruitment. 2 quantified processes affecting each stage regeneration (seed within a ripe fruit, dispersed seed, sapling) different microhabitats, evaluated...
Grazing represents the most extensive use of land worldwide. Yet its impacts on ecosystem services remain uncertain because pervasive interactions between grazing pressure, climate, soil properties, and biodiversity may occur but have never been addressed simultaneously. Using a standardized survey at 98 sites across six continents, we show that soil, are critical to explain delivery fundamental drylands Increasing pressure reduced service in warmer species-poor drylands, whereas positive...
Different kinds of plant–animal interactions are ordinarily studied in isolation, yet considering the combined fitness effects mutualistic and antagonistic is essential to understanding plant character evolution. Functional, structural, or phylogenetic associations between attractive defensive traits may be nonadaptive result from correlational selection on sets herbivory- pollination-linked traits. Nonadditivity mutualists antagonists, a requisite for selection, was experimentally tested...
• The ecological and adaptive significance of plant polyploidization is not well understood no clear pattern association between polyploid frequency environment has emerged. Climatic factors are expected to predict cytotype distribution. However, the relationship among climate, distribution variation abiotic stress tolerance traits rarely been examined. Here, we use flow cytometry root-tip squashes examine in temperate annual grass Brachypodium distachyon 57 natural populations distributed...
Fruit availability and its relation to bird abundance at different spatio—temporal scales were examined in olive orchards southern Spain. Because can be manipulated, this system provides an opportunity examine the link between populations of fruit—eating birds fruiting plants much more detail than possible natural systems. Olive varied space time as a result differences yield ripening harvesting rates. The most abundant frugivorous (Sylvia atricapilla Turdus philomelos) frequently able track...
Abstract By analysing patterns of phenotypic integration and multivariate covariance structure five metric floral traits in nine Iberian populations bumblebee-pollinated Helleborus foetidus (Ranunculaceae), this paper attempts to test the general hypothesis that pollinators enhance selectively modify correlations between functionally linked traits. The examined exhibited significant at all populations, both magnitude pattern differed widely among populations. Variation extent was neither...
Recent evidence indicates that fruit size has evolved according to dispersers' size. This is hypothesized result from a balance between factors favouring large seeds and dispersers setting the maximum hypothesis assumes (1) of fruits can be consumed by limited, (2) seed are positively correlated, (3) multiple selection pressures on positive. Our studies dispersal mutualism Olea europaea have supported first second assumptions, but valid tests third assumption still lacking. Here we confirm...
Summary 1. The balance between facilitation and competition through time is at the core of models for successional dynamics. However, since 1980s, studies have shifted away from processes. In a return to traditional roots study facilitation, we assessed phylogenetic signatures in Mediterranean communities compared them with those recently quantified non‐successional Mexican desert. 2. Based on previous work, hypothesized that distantly related lineages an important driver dynamics, as has...
Summary 1. Frugivorous birds are a priority for conservation. They experiencing the transformation of natural habitats to agro‐ecosystems worldwide and some taking advantage agricultural production fleshy‐fruited plants. However, mechanisms through which able thrive in landscapes while others become extinct poorly known. 2. This manuscript provides an overview avian frugivory olive orchards, one principal Mediterranean region important winter refuge birds. The hypothesis that frugivores...
• Premise of the study: We conducted environmental niche modeling (ENM) Brachypodium distachyon s.l. complex, a model group two diploid annual grasses ( B. , stacei ) and their derived allotetraploid hybridum) native to circum‐Mediterranean region. (1) investigated ENMs three species in range based on present past climate data; (2) identified potential overlapping niches diploids hybrid across four Quaternary windows; (3) tested whether speciation was associated with divergence/conservatism...
Abstract Agri‐Environmental Schemes (AES) have been proposed to mitigate the impact of agriculture on both taxonomic and functional biodiversity. However, a better knowledge mechanisms involved in loss agrobiodiversity is needed implement efficient AES. An unbalanced effort research towards arable lands compared permanent crops, fauna relative plants, patent, which limits generalization AES effectiveness. We evaluated effects agricultural management landscape simplification diversity ground...
The spatial distribution of seeds can influence several parameters the natural regeneration plant populations. Factors shaping seedfall patterns have been typically explored from tree perspective (seed shadow) or population rain). However, seed rain is actually composed multiple shadows. In this paper, we use framework to explore variables pattern wild olive (Olea europaea var. sylvestris), a fleshy-fruited Mediterranean scrublands. We monitored movement avian dispersers and around each...
1 We explored geographical variation in the interaction between elaiosome-bearing seeds of Helleborus foetidus and ant dispersers. looked for correlation across nine Iberian localities, diaspore traits structural functional characteristics communities. 2 Mean did not show a distance-dependent pattern. Seed size-related (length, width, mass seed mass) varied mostly among localities reward-related (elaiosome elaiosome to ratio) mainly within plants. 3 Ant communities showed patterns...
1. The response of frugivorous birds to an enlargement fruit size, and the consequences for both plants, are analysed interaction between avian seed dispersers olives ( Olea europaea) . 2. size promotes a shift in birds’ feeding behaviour, from swallowing fruits whole pecking pieces pulp. relative frequency olive consumption using each behaviour was assessed by combining field data on appearance pulp seeds with laboratory trials. 3. Sardinian Warblers Sylvia melanocephala ) European Robins...
Differences in tolerance to water stress may underlie ecological divergence of closely related ploidy lineages. However, the mechanistic basis physiological variation governing ecogeographical cytotype segregation is not well understood. Here, using Brachypodium distachyon and its derived allotetraploid B. hybridum as model, we test hypothesis that, for heteroploid annuals, polyploids drier environments based on trait differentiation enabling drought escape. We demonstrate that under...
Autonomous self‐pollination may be considered as a mechanism enhancing plant reproductive success when access to pollen sources limit seed production. We have studied the relationship between geographical patterns of variation in pollinator service Helleborus foetidus and ability three widely spaced regions Iberian Peninsula. As could expected from its early flowering period, visitation rates both plants flowers H. were very low at all sites. Pollinator composition remained consistent among...
We analysed two potential effects of post‐dispersal seed predation on recruitment the wild olive tree ( Olea europaea var. sylvestris ), a Mediterranean bird‐dispersed tree: (a) limitation abundance and distribution seedlings after dispersal, (b) selection certain characteristics recruited plants. An observational approach was used to compare rain among microhabitats, how it affected by predation. The relation microhabitat, scrub density, size with risk explored field experiment. Seed...
Summary Based on short‐term experimental data, facilitative interactions between woody plants (nurse‐recruit interactions) have been described as essential for the restoration of Mediterranean forests. However, long‐term effects nurse vegetation dynamics are unknown. This study aims to project post‐fire from easily retrieved and asses contribution forest restoration. In an area burned 20 years ago, we compared in three states regeneration: pioneer scrubland; spontaneous pine regeneration...