A5004343313- Tree-ring climate responses
- Plant Water Relations and Carbon Dynamics
- Geology and Paleoclimatology Research
- Archaeology and ancient environmental studies
- Blood Pressure and Hypertension Studies
- Isotope Analysis in Ecology
- Ion Transport and Channel Regulation
- Pleistocene-Era Hominins and Archaeology
- Forest ecology and management
- Renal function and acid-base balance
- Nutritional Studies and Diet
- Archaeological and Geological Studies
- Archaeological and Historical Studies
- Obesity, Physical Activity, Diet
- Medieval Architecture and Archaeology
- Electrolyte and hormonal disorders
- Consumer Attitudes and Food Labeling
- Neonatal Health and Biochemistry
- Remote Sensing in Agriculture
- Remote Sensing and LiDAR Applications
- Biochemical Analysis and Sensing Techniques
- Renal and Vascular Pathologies
- Historical Studies of Medieval Iberia
- Magnesium in Health and Disease
- Climate variability and models
Universitat de Lleida
2013-2024
Joint Research Center
2019-2020
École Pratique des Hautes Études
2017
Sanofi (Spain)
2005-2012
Universitat de Barcelona
1989-2011
Hospital Universitari Germans Trias i Pujol
2005
Hospital Clínic de Barcelona
1988-2005
Abstract Winter‐drought induced forest diebacks in the low‐latitude margins of species' distribution ranges can provide new insights into mechanisms (carbon starvation, hydraulic failure) underlying contrasting tree reactions. We analysed a winter‐drought dieback at S cots pine's southern edge through dual‐isotope approach (Δ 13 C and δ 18 O tree‐ring cellulose). hypothesized that differential long‐term performance, mediated by interaction between CO 2 climate, determined fates individuals...
Abstract We present a novel approach to study the sustainability of ancient Mediterranean agriculture that combines measurement carbon isotope discrimination (Δ 13 C) and nitrogen composition ( δ 15 N) along with assessment quality traits in fossil cereal grains. Charred grains naked wheat barley were recovered Los Castillejos , an archaeological site SE Spain, continuous occupation ca. 1500 years starting soon after origin (ca. 4000 BCE) region. Crop water status yield estimated from Δ C...
Submediterranean forests are considered an ecotone between Mediterranean and Eurosiberian ecosystems, very sensitive to global change. A decline of Scots pine (Pinus sylvestris L.) a related expansion oak species (Quercus spp.) have been reported in the Spanish Pre-Pyrenees. Although this has associated with increasing drought stress, underlying mechanisms not fully understood, suitable monitoring protocols lacking. The aim study is bring insight into physiological anticipating selective...
Identifying how physiological responses are structured across environmental gradients is critical to understanding in what manner ecological factors determine tree performance. Here, we investigated the spatiotemporal patterns of signal strength carbon isotope discrimination (Δ13C) and oxygen composition (δ18O) for three deciduous oaks (Quercus faginea (Lam.), Q. humilis Mill. petraea (Matt.) Liebl.) one evergreen oak (Q. ilex L.) co-occurring Mediterranean forests along an aridity gradient....
Abstract Precipitation has been of utmost importance in shaping the evolution landscapes and human settlements Mediterranean. However, information on seasonal precipitation patterns through Holocene is scarce. This study attempts to quantify East Iberian Peninsula (5000 BC AD 600) based carbon isotope composition (δ 13 C) archaeobotanical remains. Data Holm oak, Aleppo pine small‐grain cereals were combined, was inferred from models relating present‐day records δ C modern samples....
Considerable archaeobotanical datasets describe cereal cultivation in north-eastern France, from the Iron Age to Roman period. This study aims complement these by using stable isotope analysis on charred grains. Soil fertility was investigated through δ15N and δ13C analyses of 1480 grains, dated Late La Tène Antiquity periods. In Île-de-France, grain Δ13C values suggested good hydric conditions, with drier episodes 1st 3rd century AD; while Champagne, lower for spelt reflect water holding...
Epidemiological, clinical, and experimental evidence suggests a relation between Mg2+ metabolism essential hypertension. The aim of the present study was detection abnormalities erythrocyte Mg2+/Na+ exchanger in hypertensive patients. We studied 66 untreated patients 36 normotensive control subjects. Maximal efflux rates total Na(+)-dependent Na(+)-independent components were determined Mg(2+)-loaded red blood cells. calculated as component efflux. Mean values clearly elevated subjects with...
Tree-ring studies have been used for over fifty years to date and quantify past flood events. Stable C O isotopes in tree-rings also extensively applied the reconstruction of environmental conditions their changes time. However, two approaches not previously combined. In this study we explore whether meteorological origin precipitation causing events might be assessed by investigating oxygen stable tree rings. It is well known that floods may different origins, e.g. heavy convective...
Abstract Stable isotopes in tree rings provide climatic information with annual resolution dating back for centuries or even millennia. However, deriving spatially explicit climate models from isotope networks remains challenging. Here we propose a methodology to model regional precipitation carbon discrimination (Δ 13 C) by (1) building spatial of Δ C (isoscapes) and (2) maps C‐isoscapes, taking advantage the response seasonally dry climates. As case study, modeled distribution mean (MAP)...
Summary Knowledge of the socio‐demographic distribution eating behaviours can aid our understanding their contribution to obesity epidemic and help address healthy interventions those who benefit most. This cross‐sectional study assessed frequency self‐reported among 11,603 individuals representative non‐institutionalized Spanish population aged ≥18 years in period 2008–2010. In adult Spain, 24.3% had lunch 18.2% dinner away from home >3 times per month. About three‐fourths adults did not...
This study aimed to reconstruct the environmental conditions and crop management practices plant characteristics when agriculture appeared in western Europe. We analyzed oak charcoal a large number of cereal caryopsides recovered from La Draga (Girona, Spain), an early (5300 4800 cal. BC) agricultural site Iberian Peninsula. The carbon isotope discrimination (Δ
The potential for using smartphones extends to forest inventory. Several applications allow the estimation of basal areas, transforming device into a low-cost virtual relascope. accuracy Bitterlich relascope application was analyzed four low-performance devices. results were compared with those Spiegel Relaskop. measurements taken artificial targets; this increased discrimination in comparison tests made by counting trees. To check real field conditions, No significant differences found...
Summary We compared the antihypertensive efficacy of once-daily amlodipine (AM) versus nitrendipine (NTR) by 24-h ambulatory blood pressure monitoring (24-h ABPM) in 32 patients with mild to moderate essential hypertension (EH). After a 2-week single-blind, placebo run-in period, were randomized double-blind, parallel fashion: 14 received AM 5 mg and 18 NTR 10 mg. 2 weeks, dose was adjusted if necessary (AM or 20 mg) continued for another 6-week period. At end period during last week...
Abstract We have performed a kinetic analysis of the interaction Na + ‐K ATPase with internal in erythrocytes 30 normotensive controls and 72 essential hypertensive patients. Neither maximal rate ouabain‐sensitive sodium efflux (Vmax) nor content required for half‐maximal stimulation (K50%) were significantly different between Nevertheless, using 95% confidence limits K50% group as cut‐off point, 13 (18·06%) patients exhibited increased values this parameter (29·16 ± 4·31 mmol l ‐1 cells)...
Abstract Hypsodont teeth molars develop in a short lapse of time. Both dentine and enamel dental tissues do not regenerate once formed. This fact allows the reconstruction isotopic sequences covering moments individual's life span, useful approach current zooarchaeological paleontological studies. Sampling design usually follows serial or sequential extraction bands perpendicular to tooth growth axis, from apex root. However, develops following secretion layers oblique vertical this pattern...