Detalle Profesor

Nuestros investigadores
Imagen Profesor
Ricardo Ibáñez Gastón
Departamento
Biología Ambiental
Facultad de Ciencias. Universidad de Navarra
Líneas de investigación
Ecología y dinámica de comunidades vegetales, Restauración de espacios degradados, Ecología de poblaciones vegetales
Publicaciones científicas más recientes (desde 2010)
01
Autores: Sperandii, M. G., (Autor de correspondencia); de Bello, F.; Valencia, E.; et al.
Revista: JOURNAL OF VEGETATION SCIENCE
ISSN   1100-9233  Vol.   33    2  2022  págs.   e13115
Analysing temporal patterns in plant communities is extremely important to quantify the extent and the consequences of ecological changes, especially considering the current biodiversity crisis. Long-term data collected through the regular sampling of permanent plots represent the most accurate resource to study ecological succession, analyse the stability of a community over time and understand the mechanisms driving vegetation change. We hereby present the LOng-Term Vegetation Sampling (LOTVS) initiative, a global collection of vegetation time-series derived from the regular monitoring of plant species in permanent plots. With 79 data sets from five continents and 7,789 vegetation time-series monitored for at least 6 years and mostly on an annual basis, LOTVS possibly represents the largest collection of temporally fine-grained vegetation time-series derived from permanent plots and made accessible to the research community. As such, it has an outstanding potential to support innovative research in the fields of vegetation science, plant ecology and temporal ecology.
02
Autores: Valerio Galán, Mercedes (Autor de correspondencia); Ibáñez Gastón, Ricardo; Gazol Burgos, Antonio
Revista: FORESTS
ISSN   1999-4907  Vol.   12    7  2021  págs.   938
The understory of temperate forests harbour most of the plant species diversity present in these ecosystems. The maintenance of this diversity is strongly dependent on canopy gap formation, a disturbance naturally happening in non-managed forests, which promotes spatiotemporal heterogeneity in understory conditions. This, in turn, favours regeneration dynamics, functioning and structural complexity by allowing changes in light, moisture and nutrient availability. Our aim is to study how gap dynamics influence the stability of understory plant communities over a decade, particularly in their structure and function. The study was carried out in 102 permanent plots (sampled in 2006 and revisited in 2016) distributed throughout a 132 ha basin located in a non-managed temperate beech-oak forest (Bertiz Natural Park, Spain). We related changes in the taxonomical and functional composition and diversity of the understory vegetation to changes in canopy coverage. We found that gap dynamics influenced the species composition and richness of the understory through changes in light availability and leaf litter cover. Species with different strategies related to shade tolerance and dispersion established in the understory following the temporal evolution of gaps. However, changes in understory species composition in response to canopy dynamics occur at a slow speed in old-growth temperate forests, needing more than a decade to really be significant.
03
Autores: Valencia, E., (Autor de correspondencia); De Bello, F.; Leps, J.; et al.
Revista: JOURNAL OF VEGETATION SCIENCE
ISSN   1100-9233  Vol.   31    5  2020  págs.   792 - 802
Questions: Compensatory dynamics are described as one of the main mechanisms that increase community stability, e.g., where decreases of some species on a year-to-year basis are offset by an increase in others. Deviations from perfect synchrony between species (asynchrony) have therefore been advocated as an important mechanism underlying biodiversity effects on stability. However, it is unclear to what extent existing measures of synchrony actually capture the signal of year-to-year species fluctuations in the presence of long-term directional trends in both species abundance and composition (species directional trends hereafter). Such directional trends may lead to a misinterpretation of indices commonly used to reflect year-to-year synchrony. Methods: An approach based on three-term local quadrat variance (T3) which assesses population variability in a three-year moving window, was used to overcome species directional trend effects. This "detrending" approach was applied to common indices of synchrony across a worldwide collection of 77 temporal plant community datasets comprising almost 7,800 individual plots sampled for at least six years. Plots included were either maintained under constant "control" conditions over time or were subjected to different management or disturbance treatments. Results: Accounting for directional trends increased the detection of year-to-year synchronous patterns in all synchrony indices considered.
04
Autores: Valencia, E. , (Autor de correspondencia); de Bello, F. ; Galland, T. ; et al.
Revista: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN   0027-8424  Vol.   117    39  2020  págs.   24345 - 24351
The stability of ecological communities is critical for the stable provisioning of ecosystem services, such as food and forage production, carbon sequestration, and soil fertility. Greater biodiversity is expected to enhance stability across years by decreasing synchrony among species, but the drivers of stability in nature remain poorly resolved. Our analysis of time series from 79 datasets across the world showed that stability was associated more strongly with the degree of synchrony among dominant species than with species richness. The relatively weak influence of species richness is consistent with theory predicting that the effect of richness on stability weakens when synchrony is higher than expected under random fluctuations, which was the case in most communities. Land management, nutrient addition, and climate change treatments had relatively weak and varying effects on stability, modifying how species richness, synchrony, and stability interact. Our results demonstrate the prevalence of biotic drivers on ecosystem stability, with the potential for environmental drivers to alter the intricate relationship among richness, synchrony, and stability.
05
Autores: Galicia Paredes, David (Autor de correspondencia); Amezcua Martínez, Ana Belén; Baquero Martín, Enrique; et al.
Revista: BIODIVERSITY INFORMATION SCIENCE AND STANDARDS
ISSN   2535-0897  Vol.   3  2019  págs.   1 - 2
In business, the "long-tail economy" refers to a market strategy where the gravity center shifts from a few high-demand products to many, varied products focused on small niches. Commercialization of individually low-demand products can be profitable as long as their production cost is low and, all taken together, they aggregate into a big chunk of the market. Similarly, in the "business" of biodiversity data acquisition, we can find several mainstream products that produce zillions of bits of information every year and account for most of the budget allocated to increase our primary data-based knowledge about Earth's biological diversity. These products play a crucial role in biodiversity research. However, along with these large global projects, there is a constellation of small-scale institutions that work locally, but whose contribution to our understanding of natural processes should not be dismissed. These information datasets can be collectively referred to as the "long-tail biodiversity data".
06
Autores: Camarero Martínez, J. J.; Gazol Burgos, Antonio; Sangüesa Barreda, G.; et al.
Revista: FRONTIERS IN ECOLOGY AND EVOLUTION
ISSN   2296-701X  Vol.   6  2018  págs.   9
Drought-triggered declines in forest productivity and associated die-off events have increased considerably due to climate warming in the last decades. There is an increasing interest in quantifying the resilience capacity of forests against climate warming and drought to uncover how different stands and tree species will resist and recover after more frequent and intense droughts. Trees form annual growth rings that represent an accurate record of how forest growth responded to past droughts. Here we use dendrochronology to quantify the radial growth of different forests subjected to contrasting climatic conditions in Spain during the last half century. Particularly, we considered four climatically contrasting areas where dominant forests showed clear signs of drought-induced dieback. Studied forests included wet sites dominated by silver fir (Abies alba) in the Pyrenees and beech (Fagus sylvatica) stands in northern Spain, and drought-prone sites dominated by Scots pine (Pinus sylvestris) in eastern Spain and black pine (Pinus nigra) in the semi-arid south-eastern Spain. We quantified the growth reduction caused by different droughts and assessed the short-and long-term resilience capacity of declining vs. non-declining trees in each forest. In all cases, drought induced a marked growth reduction regardless tree vigor. However, the capacity to recover after drought (resilience) at short- and long-term scales varied greatly between declining and non-declining individuals. ..
07
Autores: Gazol Burgos, Antonio; Uría Díez, Jaime; Elustondo Valencia, David; et al.
Revista: JOURNAL OF VEGETATION SCIENCE
ISSN   1100-9233  Vol.   27    4  2016  págs.   728 - 738
08
Autores: Uría Díez, Jaime; Gazol Burgos, A.; Ibáñez Gastón, Ricardo
Revista: AMERICAN JOURNAL OF BOTANY
ISSN   0002-9122  Vol.   101    8  2014  págs.   1286 - 1292
Premise of the study: Plants respond to the prevailing conditions in the surrounding environment, but since they are dynamic systems this response may vary during their life. Thus, the identification of key aspects for the maintenance of plant populations requires the consideration of plant performance across environmental gradients and along life stages. This study examines how abiotic conditions and biotic interactions and processes determine the spatial distribution of two life-story stages that play a key role in the functioning of a representative population of Carex remota. Methods: We used structural equation modeling (SEM) to test for direct and indirect influences of abiotic and biotic factors on seedlings and adults of Carex remota. The variables used in the analysis were number of seedlings, cover of adults, soil moisture, leaf litter cover, relative light, and topographic position. Key results: Population patterns partially depend on direct and indirect effects of abiotic conditions. Whereas adult individuals were only affected by topsoil moisture, seedling emergence was largely affected by multiple environmental conditions. The number of seedlings increased with high topsoil moisture, low leaf-litter values, high light values as well as in low parts of the study area. The importance of adult individuals in determining seedling success is also highlighted: higher abundance provides seed rain in the surroundings and modifies the microenvironmental conditions favoring high seedling establishment. Conclusions: As hypothesized, adults and seedlings responded to the environmental conditions differently. Seedling emergence was a critical aspect in C. remota performance, and abrupt changes in the environment during this stage may strongly influence population performance.
09
Autores: Uría Díez, Jaime; Ibáñez Gastón, Ricardo
Revista: ECOHYDROLOGY
ISSN   1936-0584  Vol.   7    2  2014  págs.   524 - 531
This work explains the effect of microtopography on the spatio-temporal gradient of topsoil moisture in a first-order stream in a forested mountainous area of northern Spain. This gradient was also related with the availability of suitable microsites for a forest riparian sedge (Carex remota). Topsoil moisture, presence of C. remota and height and distance from the stream edges were measured in 385 points along 35 transects perpendicular to the stream. Soil moisture measurements were repeated in three different dates. Topsoil moisture showed a sigmoid trend that defined the limits of a wet riparian zone at 125m of distance from and 055m in elevation above stream banks. Our riparian zone was narrower than other studies because of the steep slopes (25%) of the mountainous area studied. Elevation above stream banks was more influential than distance in defining the limits of the riparian zone. In the riparian zone, values of soil moisture were high and constant even at the end of a dry period due to the continuous water flow. In the adjacent upland forest, soil moisture varied according to rainfall. These high and constant soil moisture values defined the suitable microsites for C. remota.
10
Autores: Uría Díez, Jaime; Ibáñez Gastón, Ricardo; Mateu, J
Revista: STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
ISSN   1436-3240  Vol.   27    1  2013  págs.   59-76
This study attempts to understand the dependence on abiotic factors and on the biotic process of the population development. We used three spatial point process models (Poisson, Area-Interaction and shot-noise Cox processes) in both homogenous and inhomogeneous versions to model the distribution of three Carex remota cohorts in wet zones of a temperate forest in the north of Spain. The cohorts studied were adults and seedlings born in two consecutive years. With the use of these models we are able to simulate separately and jointly the effect on plant distribution of a homogeneous or heterogeneous habitat, and the absence or presence of some biotic processes, as seed dispersal and/or density-dependent interactions. The result of the bivariate function analysis does not reveal sufficient evidences, but suggests a weak positive relation between adults and seedlings that survived a dry period in the first summer. Models from the three cohorts show a decreasing degree of clustering from seedlings to adults. Besides, the results show that the importance of the main factors that explain the population structure changes along the development of Carex stages. Compared to seedlings, the adults pattern shows an increasing dependence on abiotic factors.
11
Autores: Herrero, C.; Uría Díez, Jaime; Ibáñez Gastón, Ricardo; et al.
Revista: REPORTS OF THE FINNISH ENVIRONMENT INSTITUTE
ISSN   1796-1718  Vol.   25  2013  págs.   47 - 50
12
Autores: Ibáñez Gastón, Ricardo
Revista: BOLETÍN DE LA ASOCIACIÓN DE HERBARIOS IBERO-MACARONÉSICOS
ISSN   1136-5048  Vol.   14 - 15  2013  págs.   54
13
Autores: Ariño Plana, Arturo; Bermejo Orduna, Raúl; Ibáñez Gastón, Ricardo; et al.
Revista: THE FINNISH ENVIRONMENT
ISSN   1238-7312    18  2011  págs.   53 - 57
14
Autores: Gazol, A.; Ibáñez Gastón, Ricardo
Revista: Acta Oecologica
ISSN   1146-609X  Vol.   36    6  2010  págs.   634 - 644
15
Autores: Gazol Burgos, Antonio; Ibáñez Gastón, Ricardo
Revista: Plant Ecology (Print)
ISSN   1385-0237  Vol.   211    1  2010  págs.   37 - 48
16
Autores: Gazol Burgos, Antonio; Ibáñez Gastón, Ricardo
Revista: Plant Ecology (Print)
ISSN   1385-0237  Vol.   207    1  2010  págs.   1 - 11
Spatial patterns of vascular plant diversity were studied in an unmanaged temperate forest in northern Spain. Diversity in 102 plots of 400 m(2) was analyzed against environmental and spatial variables. The Principal Coordinates of Neighbor Matrices method was used to create spatial variables that represent spatial structures on multiple scales. Variation partitioning on multiple regression was used to discover pure environmental and spatial fractions and their joint effects on diversity. Additionally, we created maps of the response and some explanatory variables to interpret their patterns. The results show that diversity is heterogeneously distributed in the basin and is explained mainly by environmental factors. Leaf litter cover proved the most important environmental factor. The spatial variables play an important role in structuring the environment but the low amount of variance explained by these when the effect of the environment is removed points to the lesser importance of neighborhood relations to the distribution of diversity values.
01
Autores: Ibáñez Gastón, Ricardo
Libro: Enseñando Biología III. Curso formativo práctico para profesores de Bachillerato
2018  págs.   7 - 14
02
Autores: Ariño Plana, Arturo; Gimeno, Benjamín S.; Pérez de Zabalza, A.; et al.
Libro: Nitrogen Deposition and Natura 2000: Science & Practice in determining environmental impacts
2011  págs.   140 - 146
Actividad docente

Métodos en diversidad vegetal (F.Ciencias) . 
Universidad de Navarra - Facultad de Ciencias.

Trabajo de Fin de Grado (Gr. Biología) . 
Universidad de Navarra - Facultad de Ciencias.

Trabajo de Fin de Grado (Gr. Biología) . 
Universidad de Navarra - Facultad de Ciencias.

Biogeografía (F.Ciencias) . 
Universidad de Navarra - Facultad de Ciencias.

Botánica sistemática aplicada (F.Ciencias) . 
Universidad de Navarra - Facultad de Ciencias.

   

Curso 2020 - 2021

- Trabajo de Fin de Grado (Gr. Biología). Universidad de Navarra - Facultad de Ciencias.

- Biodiversidad vegetal (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

- Métodos en diversidad vegetal (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

- Métodos en diversidad animal. Universidad de Navarra - Facultad de Ciencias.

- Trabajo Fin de Grado (Gr.CCAA). Universidad de Navarra - Facultad de Ciencias.

- Trabajo de Fin de Grado (Gr. Biología). Universidad de Navarra - Facultad de Ciencias.

- Botánica sistemática aplicada (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

Curso 2019 - 2020

- Trabajo de Fin de Grado (Gr. Biología). Universidad de Navarra - Facultad de Ciencias.

- Métodos en diversidad vegetal (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

- Trabajo de Fin de Grado (Gr. Biología). Universidad de Navarra - Facultad de Ciencias.

- Métodos en diversidad animal. Universidad de Navarra - Facultad de Ciencias.

- Trabajo Fin de Grado (Gr.CCAA). Universidad de Navarra - Facultad de Ciencias.

- Biogeografía (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

- Botánica sistemática aplicada (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

- Scientific research skills (F. Ciencias). Universidad de Navarra - Facultad de Ciencias.

Curso 2018 - 2019

- Tratamiento y representación de informacion geográfica (MBPG). Universidad de Navarra - Facultad de Ciencias.

- Paisajes Pirenaicos y Atlánticos (MBPG). Universidad de Navarra - Facultad de Ciencias.

- Biodiversidad vegetal (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

- Métodos en diversidad animal. Universidad de Navarra - Facultad de Ciencias.

- Trabajo de Fin de Grado (Gr. Biología). Universidad de Navarra - Facultad de Ciencias.

- Métodos en diversidad vegetal (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

- Trabajo Fin de Grado (Gr.CCAA). Universidad de Navarra - Facultad de Ciencias.

- Botánica sistemática aplicada (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

Curso 2017 - 2018

- Métodos en diversidad animal. Universidad de Navarra - Facultad de Ciencias.

- Paisajes Pirenaicos y Atlánticos (MBPG). Universidad de Navarra - Facultad de Ciencias.

- Trabajo de Fin de Grado (Gr. Biología). Universidad de Navarra - Facultad de Ciencias.

- Métodos en diversidad vegetal (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

- Scientific research skills (F. Ciencias). Universidad de Navarra - Facultad de Ciencias.

- Biogeografía (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.

- Botánica sistemática aplicada (F.Ciencias). Universidad de Navarra - Facultad de Ciencias.