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Ana López-Ballesteros

Ana López-Ballesteros
Agrifood Research and Technology Centre of Aragon (CITA) · Agricultural and Forest Systems and the Environment

PhD

About

45
Publications
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751
Citations

Publications

Publications (45)
Article
The preservation of nutrient capital, soil fertility, and carbon (C) sequestration capacity in Mediterranean olive groves requires evaluation of agricultural practices beyond short-term productivity. We aim to contribute with a mechanistic understanding on the effects that the preservation of herbaceous cover and the use of chemical fertilizers hav...
Article
Full-text available
Besides the benefits of plant protection products (PPPs) for agricultural production, there is an increasing acknowledgement of the associated potential environmental risks. Here, we examine the feasibility of summarizing the extent of PPP usage at the country level, using Ireland as a case study, as well as at the European level. We used the area...
Article
Subterranean ventilation is a non-diffusive transport process that provokes the abrupt transfer of CO2 -rich air (previously stored) through water-free soil pores and cracks from the vadose zone to the atmosphere, under high-turbulence conditions. In dryland ecosystems, whose biological carbon exchanges are poorly characterized, it can strongly det...
Article
The objective of this paper is to contribute to improve ETa estimation in semiarid environments by proposing two variations to the TDMT model. These variations are based on the use of MODIS products from TERRA or AQUA satellites and on the use of NDVI instead of EVI, to estimate the fraction of vegetation cover. The proposed changes were validated...
Article
Full-text available
Global population projections foresee the biggest increase to occur in Africa with most of the available uncultivated land to ensure food security remaining on the continent. Simultaneously, greenhouse gas emissions are expected to rise due to ongoing land use change, industrialisation, and transport amongst other reasons with Africa becoming a maj...
Article
Full-text available
To the Editor — Access to pesticide-use data is essential to accurately evaluate the adverse effects of pesticides on human and ecosystem health. In Europe, applicators are usually required to record the location and date of pesticide applications1. A subset of these data is periodically sampled to produce heavily aggregated estimates of pesticide...
Conference Paper
Full-text available
Está demostrado que una ciencia más inclusiva produce mejores resultados en la participación y desarrollo de las mujeres en las carreras científicas y en la sociedad en general. En el ámbito universitario enfocado en el medio ambiente, las excursiones y salidas de campo son una parte esencial para el desarrollo y la puesta en práctica de las habili...
Article
Full-text available
p>The following authors were omitted from the original version of this Data Descriptor: Markus Reichstein and Nicolas Vuichard. Both contributed to the code development and N. Vuichard contributed to the processing of the ERA-Interim data downscaling. Furthermore, the contribution of the co-author Frank Tiedemann was re-evaluated relative to the co...
Article
Full-text available
An optimal network design was carried out to prioritise the installation or refurbishment of greenhouse gas (GHG) monitoring stations around Africa. The network was optimised to reduce the uncertainty in emissions across three of the most important GHGs: CO2, CH4, and N2O. Optimal networks were derived using incremental optimisation of the percenta...
Article
Full-text available
The FLUXNET2015 dataset provides ecosystem-scale data on CO2, water, and energy exchange between the biosphere and the atmosphere, and other meteorological and biological measurements, from 212 sites around the globe (over 1500 site-years, up to and including year 2014). These sites, independently managed and operated, voluntarily contributed their...
Article
Full-text available
The FLUXNET2015 dataset provides ecosystem-scale data on CO2, water, and energy exchange between the biosphere and the atmosphere, and other meteorological and biological measurements, from 212 sites around the globe (over 1500 site-years, up to and including year 2014). These sites, independently managed and operated, voluntarily contributed their...
Article
Full-text available
A crucial aspect of coordinated climate action is the ability to measure, attribute, report and verify the drivers of climate change not only globally, but down to national level. This requires the enhancement of current observation infrastructures around the world, particularly in less-studied regions such as the African continent. Methodological...
Article
Full-text available
Wetlands are crucial ecosystems modulating climate change due to their great potential to capture carbon dioxide (CO2), emit methane (CH4), and regulate local climate through evapotranspiration (ET). Common reed wetlands are particularly interesting given their high productivity, abundance, and highly efficient internal gas‐transport mechanism. How...
Article
Full-text available
In the case of the African continent, the estimates of most climate forcing components are associated with large uncertainties, above all the greenhouse gas budget. The EU-funded SEACRIFOG project is designing an observation network which aims at reducing these uncertainties. In this practice paper, we present the various steps towards the design o...
Article
Full-text available
Due to their large carbon storage capacity and ability to exchange subterranean CO 2 with the atmosphere, soils are key components in the carbon balance in semi-arid ecosystems. Most studies have focused on shallow (e.g., <30 cm depth) soil CO 2 dynamics neglecting processes in deeper soil layers where highly CO 2 -enriched air can be stored or tra...
Technical Report
Full-text available
In line with the SEACRIFOG WP4 objective of improving technical harmonisation and data quality in environmental monitoring and experimentation, this report presents the requirements for observations of the essential variables identified by SEACRIFOG and derived data products. Existing observation infrastructures and data products are then assessed...
Article
Full-text available
There are many factors that influence ecosystem scale carbon, nitrogen and greenhouse gas dynamics, including the inherent heterogeneity of soils and vegetation, anthropogenic management interventions, and biotic and abiotic disturbance events. It is important therefore, to document the characteristics of the soils and vegetation and to accurately...
Article
Full-text available
Research infrastructures play a key role in launching a new generation of integrated long-term, geographically distributed observation programmes designed to monitor climate change, better understand its impacts on global ecosystems, and evaluate possible mitigation and adaptation strategies. The pan-European Integrated Carbon Observation System co...
Technical Report
Full-text available
In line with the SEACRIFOG WP4 objective of improving technical harmonisation and data quality in environmental monitoring and experimentation, this report presents ‘a minimal dataset of mandatory climatic parameters and ecological and land-use assessment criteria, together with an ‘ideal’ set of criteria’. The primary aim is to identify the essent...
Article
The metabolic activity of water-limited ecosystems is strongly linked to the timing and magnitude of precipitation pulses that can trigger disproportionately high (i.e., hot-moments) ecosystem CO 2 fluxes. We analyzed over 2-years of continuous measurements of soil CO 2 efflux (Fs) under vegetation (Fs veg) and at bare soil (Fs bare) in a water-lim...
Article
Full-text available
There is currently a lack of representative, systematic and harmonised greenhouse gas (GHG) observations covering the variety of natural and human-altered biomes that occur in Africa. This impedes the long-term assessment of the drivers of climate change, in addition to their impacts and feedback loops at the continental scale, but also limits our...
Article
Full-text available
The soil CO2 efflux (Fs) remains the least constrained component of the terrestrial carbon cycle; its estimates are still largely uncertain, mainly because of its considerable variation related to the many factors that interact over different temporal and spatial scales. Therefore, our aims were to: (i) identify the biophysical factors that control...
Poster
Full-text available
Climate and environmental change observation in Africa • Closing the Earth's energy balance and the carbon and water cycles through observations remain outstanding scientific issues that require high quality records of key variables [1] • In the case of the African continent, there are still large observational gaps, resulting in major uncertaintie...
Poster
Full-text available
Climate change is threatening ecosystems and societies in Africa. At the same time, population growth causing land-use change, increased energy demand and the development of industry and transport infrastructure contributes to increasing greenhouse gas (GHG) emissions. It is estimated that the majority of GHG emissions in Africa at present occur du...
Poster
Full-text available
Highlights: - Explored the variation of soil CO2 in relation to its biophysical drivers. - Used a top-down statistical analysis and a wavelet time-frequency decomposition. - Identified poorly regarded drivers of soil CO2 dynamics: microhabitat and wind. - Provided new insight into soil CO2 production and transport, and improves CO2 emission modelli...
Poster
Full-text available
Ecosystems and societies on the African continent are threatened by the consequences of climate change. Similarly, the continuing trend of population growth jointly occurring with rapid land-use change, increased energy demand and the development of industry and transport infrastructure contribute to increasing greenhouse gas (GHG) emissions and su...
Article
Full-text available
Currently, drylands occupy more than one-third of the global terrestrial surface and are recognized as areas vulnerable to land degradation. The concept of land degradation stems from the loss of an ecosystem's biological productivity due to long-term loss of natural vegetation or depletion of soil nutrients. Drylands' key role in the global carbon...
Article
Estimation of high-resolution terrestrial evapotranspiration (ET) from Landsat data is important in many climatic, hydrologic, and agricultural applications, as it can help bridging the gap between existing coarse-resolution ET products and point-based field measurements. However, there is large uncertainty among existing ET products from Landsat t...
Article
Full-text available
The concept of land degradation stems from the loss of an ecosystem's biological productivity, which in turn relies on several degradation processes, such as long-term loss of natural vegetation, depletion of soil nutrients, soil compaction or water and wind erosion, to which drylands are especially vulnerable. Currently, drylands occupy more than...
Article
No-till management and the establishment of plant cover have been implemented in olive crops in recent years in order to prevent soil erosion and increase soil organic carbon. However, the effect of these conservation practices on the net CO2 exchange at the ecosystem scale has not been explored so far. In this study, we analyze the influence of re...
Conference Paper
Full-text available
Recent research has highlighted the important role of arid and semiarid ecosystems in the global carbon (C) cycle. However, investigation of the biophysical processes involved is still necessary in order to fully understand how drylands behave and to determine the main factors affecting their C balance. In the present study, we explore the potentia...
Article
Occasional rain events occur over the dry season in semiarid ecosystems and cause immediate, large increases in the net CO2 efflux which gradually decrease over a few days following the rain event. In a semiarid grassland located in SE Spain, these precipitation pulses represent only 7% of dry season length but provoked approximately 40% of the car...
Conference Paper
Full-text available
Climate change may alter soil ecosystem functioning, as assessed via the net carbon ecosystem exchange (NEE) with the atmosphere, assumed to be related to the balance of biological processes of photosynthesis (gross primary production) and ecosystem respiration. Recent studies in carbonate ecosystems show a contribution of subsoil ventilation (VE)...
Article
Full-text available
Aims Gas exchange measurements on individual plants depend largely on chamber systems, and uncertainties and corrections in current flux calculation procedures require further assessment. Methods We present a practical study with novel methods for analyses of flux uncertainties in an original chamber design excluding soil fluxes and allowing simult...
Conference Paper
In semiarid climates, water is the fundamental factor determining ecosystem productivity and thereby the capacity for carbon sequestration. Increased water use efficiency (WUE), the ratio of carbon dioxide assimilation (canopy photosynthesis, Pc) to water transpired (canopy evaporation, Ec), is assumed to be an adaptive strategy for sclerophyll shr...
Conference Paper
Full-text available
The measurement of canopy photosynthesis and transpiration is crucial to understand the carbon and water cycles, specially, in water-limited ecosystems. When the objective is to quantify fluxes of carbon at whole-plant level, scaling up from leaf to canopy by using multi-layer models is always a tricky approach, because of the complexity in obtaini...

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Projects

Projects (4)
Project
The forestry practices to which the Atlantic forests of the Iberian Peninsula have been subjected to in the last century have generated a forest dominated by monospecific plantations of exotic species (especially Eucalyptus globulus from Australia and Pinus radiata from California, Unites States). This trend has perpetuated the loss of both plant and animal biodiversity and the proliferation of forest diseases and fires, along with important losses of soil functioning, soil biodiversity, and soil organic matter (soil erosion), which have increased the incidence of floods and landslides. The ATLANTIS project aims to develop knowledge to reverse these current trends that call into question the long-term soil conservation of the Iberian Atlantic Forests, the stability of these forest ecosystems and the sustainable provision of key ecosystem services. With these purposes in mind, this coordinated project proposal has been designed: (1) to collect robust evidence on how, and to which extent, the current forestry practices determine trends of soil erosion, including losses of soil physical (e.g. soil structure, water infiltration), chemical (e.g. nutrient content, soil organic matter) and biological (soil microbiota diversity and functioning) properties; (2) to link the current status of soil conservation with tree and ecosystem health and with key ecosystem services that forests provide; (3) to develop smart, ecologically friendly forest management practices, which could improve soil conservation and hence the long-term sustainability of the Iberian Atlantic Forests; and (4) to develop tools that may be used to detect early stages of forest vulnerability in order to understand current trends and improve decision-making to optimize forest conservation
Project
The project IBERYCA brings together an international and multidisciplinary team of experts (microbial ecologists, modelers, ecophysiologists, phytopathologists and biogeochemists) that will use the latest generation of "omics" techniques (metabarcoding and metabolomics) to deepen the multifunctional role of the microbiota (Prokaryotes, archaeas and fungi) in the health of Holm-oaks and their resilience to the increasing incidence of, e.g. extreme summer droughts and/or pathogen attacks.