Spatial characterization of surface water vulnerability to diffuse pollution related to pesticide contamination: case of the Gimone watershed in France

2021 ◽  
Author(s):  
Chaima Grimene ◽  
Oussama Mghirbi ◽  
Samuel Louvet ◽  
Jean-Paul Bord ◽  
Philippe Le Grusse
Keyword(s):  
Surface Water ◽  
Diffuse Pollution ◽  
Pesticide Contamination ◽  
Spatial Characterization ◽  
Water Vulnerability

scholarly journals Fast camera spatial characterization of photonic polarization entanglement

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Christopher Ianzano ◽  
Peter Svihra ◽  
Mael Flament ◽  
Andrew Hardy ◽  
Guodong Cui ◽  
...  
Keyword(s):  
Spatial Characterization

scholarly journals Visualization and Temporal/Spatial Characterization of Cardiac Radiofrequency Ablation Lesions Using Magnetic Resonance Imaging

Circulation ◽  
2000 ◽  
Vol 102 (6) ◽  
pp. 698-705 ◽  
Author(s):  
Albert C. Lardo ◽  
Elliot R. McVeigh ◽  
Pitayadet Jumrussirikul ◽  
Ronald D. Berger ◽  
Hugh Calkins ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Radiofrequency Ablation ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Spatial Characterization

The habitable zone of Earth-mass planets around 47 UMa: results for land and water worlds

2003 ◽  
Vol 2 (1) ◽  
pp. 35-39 ◽  
Author(s):  
S. Franck ◽  
M. Cuntz ◽  
W. von Bloh ◽  
C. Bounama
Keyword(s):  
Surface Water ◽  
System Approach ◽  
Distinct Type ◽  
Integrated System ◽  
Habitable Zone ◽  
Stable Orbit ◽  
The Earth ◽  
Earth Like Planets ◽  
Very High

In a previous paper, we showed that Earth-type habitable planets around 47 UMa are in principle possible if a distinct set of conditions is warranted. These conditions include that the Earth-type planets have successfully formed and are orbitally stable and, in addition, that the 47 UMa star–planet system is relatively young ([lsim ]6 Gyr). We now extend this study by considering Earth-like planets with different land/ocean coverages. This study is again based on the so-called integrated system approach, which describes the photosynthetic biomass production taking into account a variety of climatological, biogeochemical and geodynamical processes. This approach implies a special characterization of the habitable zone defined for a distinct type of planet. We show that the likelihood of finding a habitable Earth-like planet on a stable orbit around 47 UMa critically depends on the percentage of the planetary land/ocean coverage. The likelihood is significantly increased for planets with a very high percentage of ocean surface (‘water worlds’).

Spatiotemporal assessment of surface water vulnerability to road construction

2021 ◽  
Author(s):  
Mehrdad Ghorbani Mooselu ◽  
Hamid Amiri ◽  
Sama Azadi ◽  
Helge Liltved
Keyword(s):  
Surface Water ◽  
Road Construction ◽  
Water Vulnerability

scholarly journals Protozooplankton characterization of two contrasting sites in a tropical coastal ecosystem (Guanabara Bay, RJ)

2007 ◽  
Vol 55 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Eli Ana Traversim Gomes ◽  
Viviane Severiano dos Santos ◽  
Denise Rivera Tenenbaum ◽  
Maria Célia Villac
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Food Web ◽  
Warm Season ◽  
Descriptive Study ◽  
Cold Season ◽  
Guanabara Bay ◽  
Trophic Conditions ◽  
Plankton Dynamics

Much time and resources have been invested in understanding plankton dynamics in Guanabara Bay (Brazil), but no attention has been devoted to the protozooplankton. To fulfill this lacuna, abundance and composition of protozooplankton were investigated from January to December - 2000 in fortnightly surface water samplings at two distinct water quality sites (Urca - closer to the bay entrance, more saline and cleaner waters; Ramos - inner reaches, hypereutrophic waters). The density at Urca (10³ - 10(5) cell.l-1) was one to three orders of magnitude lower than at Ramos (10(4) - 10(5) cell.l-1). A seasonal trend for nanoplankton and protozooplankton was more evident at Urca, but both sites had lower densities during the colder period. Small heterotrophic dinoflagellates (20-30 mm) were dominant in over 50% of the samples. The protozooplankton abundance and composition reflected the distinct trophic conditions states found at the bay. During the wet-warm season, non-oligotrich ciliates were representative of Ramos site with Gymnodiniaceae dinoflagellates, while tintinnids and heterotrophic dinoflagellates were predominantly found at Urca mainly during the dry-cold season. This first descriptive study towards the understanding of the intricate relationships among the microbial food web components reveals that protozooplankton can be a good indicator of water quality conditions at the bay.

scholarly journals Characterization of pesticide consumption in the county of Santarém, Pará, Brazil

2000 ◽  
Vol 30 (4) ◽  
pp. 615-615 ◽  
Author(s):  
Nicolas SOUMIS ◽  
Marc ROULET ◽  
Marc LUCOTTE
Keyword(s):  
Methyl Parathion ◽  
Synthetic Pyrethroids ◽  
Toxic Substances ◽  
Organophosphate Insecticide ◽  
Pesticide Contamination ◽  
Annual Consumption ◽  
Per Capita ◽  
Future Work ◽  
Pesticide Usage

Many potentially harmful pesticides for both human health and the environment are used in Brazilian Amazon. However, no scientific datum on pesticide usage is presently available for this region. Consequently, it is difficult to assess which substances arc used and in which quantities. As an important premise for future work on pesticide contamination in the county of Santarém (State of Pará, Brazil), a survey was conducted in order to qualify and quantify the use of some pesticides in this region. This investigation was made between January and March 1997 and August and October 1998 and revealed use of several organophosphates, synthetic pyrethroids and carbamates insecticides. Furthermore, many herbicides and fungicides were listed. These pesticides are used for agriculture, domestic, and sanitary programs. This paper also provides a first estimation of quantities of some insecticides commonly used in agriculture (chlorpyrifos, malathion, metamidophos and methyl-parathion). The annual consumption for these four compounds is estimated at ca. 1 910 kg. Organophosphate insecticide consumption in the county of Santarém seems to be lower than the Brazilian average in terms of «per capita» and «per agricultural area» consumptions. Nevertheless, this county uses toxic substances on sensitive environments such as floodplains (várzeas), making relevant a thorough study on the potential contamination of this environment and its biota.

A CONTINUOUS SPATIAL CHARACTERIZATION OF TEXTURAL FRACTIONS AND CACO3 CONTENT OF THE TOPSOIL OF THE POLDER REGION OF NORTHWEST EAST-FLANDERS, BELGIUM

Soil Science ◽  
1990 ◽  
Vol 150 (4) ◽  
pp. 710-716 ◽  
Author(s):  
M. VAN MEIRVENNE ◽  
G. HOFMAN ◽  
J. VAN HOVE ◽  
M. VAN RUYMBEKE
Keyword(s):  
Spatial Characterization ◽  
Caco3 Content
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