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Effetto della gestione del territorio sullo stato di salute del suolo valutato attraverso indicatori microbici
No full textFactors regulating functional diversity of soil microbial community in Mediterranean environment
No full textSoil microbial biomass, activities and diversity in Southern Italy areas chronically exposed to trace element input from industrial and agricultural activities
No full textHigh concentrations of trace elements in the soil can have toxic effects on the microbial community which plays a
key role in fundamental ecosystem processes like the organic matter decomposition and nutrient cycles. The aim
of this study was to evaluate if trace element concentrations in soils chronically exposed to industrial and
agricultural activities did affect the soil microbial community, in terms of biomass, activity and diversity. Soil
samples differing in trace elements (As, Cd, Co, Cr, Cu, Ni, Pb, V, Zn) concentrations were analysed for the total
microbial biomass (Cmic), fungal mycelium, microbial activity, indexes of microbial community structure (fungal
percentage of total Cmic) and microbial metabolism (metabolic quotient or qCO2; carbon mineralization rate or
CMR), and genetic bacterial diversity (richness, Shannon index and evenness of bacterial groups). Relationships
of the microbial variables with individual trace element concentrations, relative Overall Contamination Index
(OCI), and ordinary soil properties (pH, water content, organic C content, electrical conductivity) were assessed
by simple and multivariate statistical analysis. Neither OCI nor single element concentrations determined a
significant reduction in soil microbial biomass, activity and diversity, these variables being mainly driven by soil
organic C and water content. Only soil Cr concentration affected indexes of the microbial metabolism and
structure, without causing stressful conditions. Even Cmic and bacterial diversity showed higher values in soils
richer of Cr. The results suggest that the concentrations of considered trace elements measured in our soils, or
probably their bioavailable fractions, did not cause toxic effects on the microbial community. However, the
chronic exposure to different patterns of trace element contamination probably elicited site-specific adaptive
responses in microbial populations
Relationship between soil quality and land use evaluated by chemical and biological indicators
No full textMassive mesenteric ischemia resulting from a giant strangulated umbilical hernia
No full textHernia repair is the most commonly practiced operation in the departments of surgery in developed countries. Huge abdominal hernias are uncommon in western civilization. We present a rare case of a 73-year-old woman with a diagnosis at admission of intestinal obstruction caused by a giant strangulated umbilical hernia. At the clinical and radiological examination, the patient showed an enormous strangulated umbilical hernia with acute abdomen, atrial fibrillation, and pulmonary subedema. Emergency laparotomy showed a huge peritoneal umbilical sac containing massive mesenteric ischemia starting from 40 cm after the Treitz ligament and extended to the right colonic flexure. A near-total resection of the small bowel, a right colectomy with double terminal stomas, and a direct hernia repair without prosthetic mesh were performed. Twenty days after the operation, the patient was discharged and begun domiciliary total parenteral nutrition, and 24 months after surgical treatment she is still alive
Relationship between subsoil architecture and land use in the north-eastern Campania plain
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Caratterizzazione geoambientale del margine nordest della Piana Campana in provincia di Caserta
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