Hydrogeochemical characterization of oilfield waters from southeast Maracaibo Basin (Venezuela): Diagenetic effects on chemical and isotopic composition

2016 ◽  
Vol 73 ◽  
pp. 228-248 ◽  
Author(s):  
Tiziano Boschetti ◽  
Beatriz Angulo ◽  
Frank Cabrera ◽  
Jhaisson Vásquez ◽  
Ramón Luis Montero
Keyword(s):  
Isotopic Composition ◽  
Maracaibo Basin ◽  
Hydrogeochemical Characterization

Hydrogeochemical characterization of small coastal wetlands and forests in the Southern Po plain (Northern Italy)

Ecohydrology ◽  
2011 ◽  
Vol 4 (4) ◽  
pp. 597-607 ◽  
Author(s):  
V. Marconi ◽  
M. Antonellini ◽  
E. Balugani ◽  
E. Dinelli
Keyword(s):  
Coastal Wetlands ◽  
Northern Italy ◽  
Po Plain ◽  
Hydrogeochemical Characterization

Ecological and isotopic discrimination of syntopic rodents in a neotropical rain forest of French Guiana

2003 ◽  
Vol 19 (2) ◽  
pp. 209-214 ◽  
Author(s):  
Jean-François Mauffrey ◽  
François Catzeflis
Keyword(s):  
Stable Isotopes ◽  
Isotopic Composition ◽  
Rain Forest ◽  
French Guiana ◽  
Ecological Studies ◽  
Carbon Isotope Ratios ◽  
Photosynthetic Pathways ◽  
Feeding Process ◽  
Neotropical Rain Forest

Stable isotopes are commonly used in ecological studies to infer food resources (Ambrose & DeNiro 1986, Bocherens et al. 1990,1991,1994;Yoshinaga et al. 1991) since isotopic composition is conserved during the feeding process. Moreover,for herbivorous (sensu lato) species, it is often possible to identify the main resource because different photosynthetic pathways generate different values of carbon isotope ratios (Park & Epstein 1961, Sternberg et al. 1984). This allows the characterization of broad biota such as savannas or forest and discrimination of grazers from sympatric folivorous species (DeNiro & Epstein 1978).

scholarly journals Hydrogeochemical characterization of Jaffna’s aquifer systems in Sri Lanka

2013 ◽  
Author(s):  
T. Mikunthan ◽  
M. Vithanage ◽  
S. Pathmarajah ◽  
S. Arasalingam ◽  
R. Ariyaratne ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Aquifer Systems ◽  
Hydrogeochemical Characterization

scholarly journals Hydrogeochemical characterization of groundwater in alluvial plains of river Yamuna in northern India: An insight of controlling processes

2019 ◽  
Vol 31 (4) ◽  
pp. 1245-1253 ◽  
Author(s):  
Lakhvinder Kaur ◽  
Madhuri S. Rishi ◽  
Sakshi Sharma ◽  
Bhavika Sharma ◽  
Renu Lata ◽  
...  
Keyword(s):  
Northern India ◽  
Hydrogeochemical Characterization ◽  
River Yamuna ◽  
Controlling Processes

scholarly journals Chemical and isotopic characterization of nitrate retained and leached from soil after manure fertilization-by lysimeter experiments

2019 ◽  
Vol 98 ◽  
pp. 12016 ◽  
Author(s):  
Neus Otero ◽  
Alba Llovet ◽  
Raúl Carrey ◽  
Angela Ribas ◽  
Xavier Domene ◽  
...  
Keyword(s):  
Isotopic Composition ◽  
Soil Fertilization ◽  
Manure Application ◽  
Isotopic Characterization ◽  
N Compounds

Increase of soil fertilization produces an increase of N exported to the hydrosphere. The amount of nitrate that reaches the aquifers is controlled by processes affecting N-species within the soils. The most relevant processes are nitrification, denitrification, assimilation, mineralization, and immobilization. This work studies the fate of N compounds in soil after manure application in a lysimeter study. To this end the isotopic composition of N and O of dissolved nitrate (δ15N-NO3- and δ18O-NO3-) was studied coupled with the evolution of N-compounds retained and leached from the soil. Results showed an increase in the δ15N-NO3- of the leached nitrate towards values similar to the δ15N-NH4+ from the applied manure. The highest δ15N-NO3- values were measured after 100 days of manure application, and thereafter, values decreased progressively towards the initial δ15N-NO3- of the soil before manure application.

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