25 documents found, page 1 of 3

Changing pasture management practices on the Greek island of Samothraki: Obstac...

Context On the Greek island of Samothraki, decades of overgrazing by the large domestic population of small ruminants accelerated soil degradation and surface erosion, with direct consequences for ecosystem functioning and the delivery of ecosystem services. Objective This manuscript reports on a 5-year research project to achieve more sustainable pasture management practices among small ruminant farmers on the...

Satellite-based estimation of soil organic carbon in Portuguese grasslands

Soil organic carbon (SOC) sequestration is one of the main ecosystem services provided by well-managed grasslands. In the Mediterranean region, sown biodiverse pastures (SBP) rich in legumes are a nature-based, innovative, and economically competitive livestock production system. As a co-benefit of increased yield, they also contribute to carbon sequestration through SOC accumulation. However, SOC monitoring in...

Characterization of portuguese sown rainfed grasslands using remote sensing and...

Grasslands are crucial ecosystems that support and provide a diverse number of ecosystem services. Sown biodiverse pastures rich in legumes (SBP) were developed with the main goal of increasing grassland production while minimizing fertilizers inputs. In this paper, the main properties of SBP in Portugal were estimated using remote sensing and machine learning in six different farms and two production years (sp...

Alternativas económicas na suplementação de ovinos de leite em pastagem : resul...

O presente trabalho foi desenvolvido no âmbito do Projecto Sheep 4.0, com o objetivo de potenciar a sustentabilidade dos sistemas de produção de ovinos de leite, integrando uma avaliação de efeitos alimentares, económicos, sociais e ambientais que permitirá imprimir um selo de sustentabilidade à produção extensiva.

Characterization of portuguese sown rainfed grasslands using remote sensing and...

Grasslands are crucial ecosystems that support and provide a diverse number of ecosystem services. Sown biodiverse pastures rich in legumes (SBP) were developed with the main goal of increasing grassland production while minimizing fertilizers inputs. In this paper, the main properties of SBP in Portugal were estimated using remote sensing and machine learning in six different farms and two production years (sp...

Evaluation of near infrared spectroscopy (NIRS) for estimating soil organic mat...

The Montado is an agro-silvo-pastoral ecosystem characteristic of the Mediterranean region. Pasture productivity and, consequently, the possibilities for intensifying livestock production depend on soil fertility. Soil organic matter (SOM) and phosphorus (P2O5) are two indicators of the evolution of soil fertility in this ecosystem. However, their conventional analytical determination by reference laboratory me...

Estimating soil organic carbon of sown biodiverse permanent pastures in Portuga...

Grasslands in Portugal are key managed ecosystems, supporting and providing a diverse number of ecosystem services. Here, we developed a procedure for rapid estimation of soil organic carbon (SOC) in soil samples of sown biodiverse permanent pastures rich in legumes (SBP) in Portugal. We combined laboratory NIR spectral data analysis with artificial neural networks (ANN) to estimate the SOC content of SBP soil ...

Parâmetros reprodutivos de efetivos de vacas aleitantes no Alentejo

A área de pastagens permanentes tem vindo a aumentar no Alentejo representando atualmente mais de 1,15 milhões de ha, dos quais cerca de 700 mil ha sob coberto de sobreiros e azinheiras, em que mais de 80% são consideradas “pobres”. Os bovinos, cuja população tem aumentado consistentemente nos últimos 20 anos, são a espécie zootécnica dominante, constituindo, em termos de cabeças normais 54,9% do efetivo (INE, ...

Nutritional and sensory characterization of semi-intensively and intensively gr...

Comparison between semi-intensively and intensively grown beef