Search results for "Depth distribution"

showing 3 items of 3 documents

Effect of cactus pear cultivation after Mediterranean maquis on soil carbon stock, δ13C spatial distribution and root turnover

2014

Abstract Mediterranean ecosystems are characterized by nearly complete replacement of natural vegetation by intensive croplands and orchards leading to strong soil degradation. Organic carbon is usually accumulated in soils under maquis leading to partial regeneration of fertility for future agricultural use. The aim of this work was to investigate the effect of land use change from maquis to agriculture on soil organic carbon (SOC) stock and its spatial distribution in a Mediterranean system. Three Mediterranean land use systems (seminatural vegetation, cactus pear crop and olive grove) were selected in Sicily and analysed for soil C stocks and their δ13C. Total SOC and δ13C were measured …

2. Zero hungerMediterranean climatePEARSettore AGR/05 - Assestamento Forestale E SelvicolturaSoil organic matterδ13C natural abundance Soil organic matter Spatial and depth distribution Root turnover Land use change Carbon sequestrationSoil carbon15. Life on landSettore AGR/02 - Agronomia E Coltivazioni ErbaceeAgronomySoil retrogression and degradationSoil waterCactusSoil horizonEnvironmental scienceEarth-Surface ProcessesCATENA
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Distribution of soil organic carbon in Wadi Al-Thulaima, Saudi Arabia: A hyper-arid habitat altered by wastewater reuse

2018

The carbon cycle is being altered as a result of human-induced changes in the Earth's system. Therefore, ecosystems such as wetlands, authentic CO2 sinks, are becoming especially important. Little information exits on the soil organic carbon (SOC) stock for the middle east-countries man-made wetlands making wadis permanent with the outflow of wastewater treatment plants. This paper presents the vertical distribution of SOC content, soil bulk density (SBD) and SOC density in soil of vegetated and bare sites in Wadi Al-Thulaima, one of the artificial wetlands in central Saudi Arabia. The mean distribution of SBD in the vegetated and bare sites increased significantly with depth. Inversely, th…

Hydrologygeographygeography.geographical_feature_categoryCarbon depth distributionGlobal warmingSoil organic matterSaudi ArabiaCarbon sinkKyoto ProtocolWetland04 agricultural and veterinary sciencesSoil carbon010501 environmental sciencesCarbon sequestration01 natural sciencesSoil qualityCarbon cycleCarbon pool040103 agronomy & agriculture0401 agriculture forestry and fisheriesEnvironmental scienceSoil fertility0105 earth and related environmental sciencesEarth-Surface ProcessesCATENA
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Phylogeographic patterns of decapod crustaceans at the Atlantic-Mediterranean transition.

2012

9 páginas, 4 figuras, 3 tablas.

Mediterranean climateGene FlowGenetic SpeciationBiologyOceanographic discontinuitiesPopulation structureDNA MitochondrialGene flowElectron Transport Complex IVMediterranean seaDepth distributionDecapodaGeneticsMediterranean SeaAnimalsMolecular BiologyAtlantic OceanEcology Evolution Behavior and SystematicsPhylogenymtDNAEcologyGenetic VariationLast Glacial MaximumSequence Analysis DNAbiology.organism_classificationCrustaceanPhylogeographyPhylogeographyHaplotypesGlaciationsLiocarcinus depuratorGlobal biodiversityMolecular phylogenetics and evolution
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