This paper investigates water repellency and soil moisture under 4 different Eucalyptus globulus plantations in Portugal. On 8 occasions over a 16-month period, measurements were made at 3 depths (surface, 0.10 0.20 m) 60 points on four 10 by 18 m grids. The main results are: (i) all sites depths, spatial frequency of (defined as percentage repellent grid points) followed moisture-related seasonal cycle, its amplitude being greatest for the longest established site, where surface was...

In addition to the incineration of vegetation and litter layer, fires are also responsible for formation a water repellent layer with significantly different severity spatial distribution patterns following burning intensities. Those have an enormous influence on soil wetting patterns, hydrological processes at scales. This study attempts understand role repellence soil, slope, catchment processes, transmission between The comparison microplot (0.24 m2), plot (16 (<1.2 km2) scales shows...

The present paper studies the hydrological implications of forest fire and associated export nutrients as solutes at micro-plot, plot catchment scales immediately after fire. use three different spatial provides improved insights into mechanisms that drive solute movement processes they change with time following Rainfall simulations were performed for 1 h, right fires. Plots monitored during rainfall events, catchments instrumented continuously water level recorders. Samples collected...

Fire induces important changes in vegetation and soil structure, which can have major impacts on overland flow generation processes, runoff amounts erosion yields. This paper presents the results of an investigation into impact different fire intensities water, sediment solute Wildfire, prescribed experimental were investigated at two scales: (1) a temporary circular bounded plot 0.24 m 2 (rainfall simulation plot); (2) permanent 16 (natural rainfall conditions). In addition, spatial...

Abstract. The north-central region of Portugal has undergone significant land cover change since the early 1900s, with large-scale replacement natural vegetation types plantation forests. This transition consisted an initial conversion primarily to Pinus pinaster, followed by a secondary Eucalyptus globulus. is likely have altered hydrologic functioning this region; however, these potential impacts are not fully understood. To contribute better understanding change, study examines temporal...

Water is crucial for enduring horticultural productivity, but high water-use requirements and declining water supplies with the changing climate challenge economic viability, environmental sustainability, social justice. While scholarly literature pertaining to management in horticulture abounds, knowledge of practices technologies that optimize use scarce. Here, we review scientific relating crops, impacts on resources, opportunities improving water- transpiration-use efficiency. We find...

Abstract The extensive afforestation of the Mediterranean rim Europe in recent decades has increased number wildfire disturbances on hydrological and sediment processes, but impacts headwater catchments is still poorly understood, especially when compared with previous agricultural landscape. This work monitored an agroforestry catchment north‐western Iberian Peninsula, plantation forests mixed traditional agriculture using soil conservation practices, for one year before fire three years...

Vines are one of the most ancient crops, with great relevance worldwide but especially in wine-growing areas Southern Europe. In Bairrada wine region north-central Portugal, vineyards have long been managed intensively, frequent tillage and application fertilizers phytochemical products. During last decade, however, these conventional practices increasingly becoming substituted by more sustainable management practices, particular integrated production (IP) and, to a lesser degree, no-tillage...

Forest areas of the Mediterranean regions Portugal, Morocco, and Tunisia are suffering major land use changes, with replacement traditional evergreen Quercus species (i.e. suber ilex) by fast-growing Eucalyptus species. Since amongst those a higher impact on soil water repellency, this study examined effect properties, hydrological processes erosion rates. Measurements were performed in that correspond to climatic distribution suber: at Mação Portel Portugal; Ben Slimane Morocco; Cap Bon,...

Abstract In the Baixo Vouga region of north-central Portugal, forests occupy half territory, which two thirds are Eucalypts plantations. The hydrological implications this large-scale introduction eucalypt unknown and aim exploratory study, realized in Caramulo Mountains, was to describe overland flow (OLF), subsurface (SSF) stream (Q) a catchment dominated by Eucalyptus main conclusions that annual OLF rate is low, spatially heterogeneous between 0.1% 6% concentrated during wet season as...

Abstract Grain corn is the main cereal produced in Portugal. It grown intensive monoculture cropping systems that may have negative effects on soil quality, affecting long-term fertility and productivity, and, therefore, sustainability of production. A promising management practice to mitigate degradation grow winter cover crops used as green manure. This study examined effectiveness six legume (LCCs) species providing agro-ecological services for grain Mediterranean region, specifically...

Mediterranean headwater catchments have experienced major land-use changes in recent centuries, namely characterized by afforestation with fast-growing tree species (e.g., pine and eucalyptus). This paper investigates differences the hydrological response of two forested distinct Pinus pinaster Aiton (PIN) Eucalyptus globulus Labill. (EUC) covers over 6 years, from 2010 to 2016. The study was developed paired located North–Central Portugal, under wet climate schist bedrock. Based on rainfall...

Abstract. The north-central region of Portugal has undergone significant afforestation the species Pinus pinaster and Eucalyptus globulus since early 1900s; however, long-term hydrologic impacts this land cover change are not fully understood. To contribute to a better understanding potential change, study examines temporal trends in 7 years data from Águeda watershed (part Vouga Basin) over period 1936 2010. Meteorological hydrological records were analysed using combined...

[es] - En el presente trabajo se describe y analiza la repelencia al agua detectada en una pequeña cuenca hidrográfica afectada por fuego controlado área montañosa central de Portugal. También establece discusión acerca los métodos utilizados para medir hidrofobia grado correspondencia entre resultados obtenidos campo laboratorio. Los muestran escasa influencia del sobre parámetros físicos contenido materia orgánica suelo, indicando, sin embargo, estrecha relación distribución espacial Erica...

The ongoing intensification of grazing as well the replacement traditional land management systems in Maghreb has brought to forefront fundamental role land-use determining soil erosion hazard. This paper reports on rates and hydrological characteristics a variety uses Morocco Tunisia. results were obtained through rainfall simulation experiments carried out field using portable simulator, following design CERDÀ et al. (1997). Traditional - typically involving combination agriculture, animal...

<p>Conservation of agriculture soils is a topic major concern, namely through the increase soil organic matter. SoilCare project (https://www.soilcare-project.eu/) aims to enhance quality agricultural in Europe, implementation and testing Soil Improving Cropping Systems 16 study sites. In Portugal, application urban sewage sludge amendments has been investigated. However, this sensitive topic, due risk long term accumulation heavy metals consequent contamination soil. The...

<p>Land degradation is a major challenge, particularly in intensive agriculture areas such as typical vineyards. Soil contamination with heavy metals widespread phenomenon vineyards, due to the use of pesticides, fertilizers, manure and slurry. As result, vineyard soils have accumulated other trace elements that may be phytotoxic, non-biodegradable persistent, which represents long term threat crop system food chain. In Portugal, area fourth largest Europe (178770 ha), being...