Evaluación de los riegos de la Comunidad de Regantes V del Canal de las Bardenas

14 Pag., 2 Tabl., 1 Fig.[ES] En este artículo se presentan los resultados de las evaluaciones de riego que se han llevado a cabo dentro de la segunda fase del trabajo denominado “Mejora de la Gestión Integral del Agua de Riego en la Comunidad de Regantes V del Canal de Bardenas”. El 80 % de la superficie de esta comunidad está ocupado por suelos de plataformas residuales, mientras que el resto son suelos de aluvial. Para caracterizar la capacidad de retención de agua de los suelos (CRA) se realizó un muestro en el que se describieron 50 perfiles. Para determinar la infiltración de los suelos y los índices de calidad del riego por superficie se realizaron 50 evaluaciones de riego. Un adecuado manejo del agua a nivel de parcela y unas texturas francas-franco arenosas permiten alcanzar niveles de eficiencia medios en las parcelas de las plataformas (53 % de media), cuyos suelos se caracterizan por una baja CRA (60 mm de media). En aluviales la eficiencia llega hasta un 80 % de media, gracias a las elevadas capacidades de retención de agua de estos suelos (182 mm de media). Actualmente se está realizado un reaprovechamiento de las aguas de desagüe que posiblemente provoque que la eficiencia a nivel de comunidad sea mayor que la obtenida a nivel de parcela. Estos resultados permiten pensar que la modernización de los regadíos, mediante el cambio a un sistema de riego presurizado, tendría un fuerte impacto sobre la eficiencia en parcela, aunque el impacto sobre la eficiencia en la comunidad sería menor. La modernización tendría resultados muy beneficiosos social y económicamente para los agricultores, además de mejorar la calidad de las aguas de los ríos que atraviesan la comunidad.[EN] Results of the irrigation evaluations performed in the second phase of the project “Improvement of the Water Irrigation Integral Management in the Comunidad de Regantes V del Canal de Bardenas” are presented in this paper. An 80 % of the area of the Irrigation District is occupied by soils of residual platforms, and the rest of the soils are alluvial. A soil survey was performed for characterising the water holding capacity (WHC) of the soils, using 50 soil profiles. A total of 50 irrigation evaluations was performed for determining soil infiltration and the performance indexes of surface irrigation in the study area. An adequate water management in border irrigation and loam-sandy loam textures permit to attain 53 % application efficiency in platforms, whose soils are characterized by a low WHC (with an average of 60 mm). In alluvial soils the application efficiency is higher, with an average of 80 %, due to the high water holding capacity of these soils (an average of 182 mm). Currently, The district is enforcing a program for irrigation return flows reuse. This program surely results in an irrigation district efficiency substantially higher that the average application efficiency. With these results is possible to think that an irrigation modernization, through a change to a pressurized irrigation system will severely improve the application efficiency, but the effect on the irrigation district efficiency will only be moderate. However, this modernisation would have great social and economical benefits for farmers, and also, the water quality of rivers crossing the irrigation district will be improved.Este proyecto de investigación ha sido cofinanciado por la CICYT, por Fondos FEDER, por el CONSI+D y por la Comunidad de Regantes V de Bardenas.Peer reviewe

The Gdap1 knockout mouse mechanistically links redox control to Charcot-Marie-Tooth disease

Mutations in the mitochondrial fission factor GDAP1 are associated with severe peripheral neuropathies, but why the CNS remains unaffected is unclear. Using a Gdap1−/− mouse, Niemann et al. demonstrate that a CNS-expressed Gdap1 paralogue changes its subcellular localisation under oxidative stress conditions to also act as a mitochondrial fission facto

Idiopathic Hypersomnia Patients Revealed Longer Circadian Period Length in Peripheral Skin Fibroblasts

The vast majority of living organisms have evolved a circadian rhythm of roughly 24 h in adaptation to ever-changing environmental conditions, such as the cycle of light and darkness. In some sleep disorders like idiopathic hypersomnia (IH) this adaptation is defective. As the etiology of this disease is largely unknown, we examined the in vitro circadian period length of patients suffering from IH. The patients were diagnosed according to the ICSD3-criteria by clinical history, polysomnography (PSG), and multiple sleep latency testing (MSLT). In order to gain insight into the molecular mechanism of this sleep disorder we collected fibroblasts from skin biopsies of IH patients and healthy subjects. We determined the circadian period length of the primary fibroblast cells by lentiviral infection with a construct expressing a luciferase gene under the control of a BMAL1 promoter. The group of IH patients revealed on average a prolonged circadian period length. In comparison to the group of healthy controls (HC) the mean period length was estimated to be 0.82 h (95%-CI 0.44–1.20 h) longer in the patient group. This finding further stresses a disturbed regulation of the circadian rhythm in IH patients as part of the pathophysiology of this complex and poorly understood primary sleep disorder