305,809 research outputs found
Valse entr'acte de François les bas bleus / opéra comique en 3 actes de F. Bernicat & A. Messager ; transcr. pour piano par A. Messager ; [ill. par] E. Buval
No full textTitre uniforme : Messager, André (1853-1929). Compositeur. [François les bas bleus. Valse entr'acte]Piano, Musique de (musique)Opéras-comiques -- +* 1800......- 1899......+:19e siècle
Global and local estimates of environmental flow requirements to sustain river ecosystems are poorly correlated
No full textData repository for ‘Global and local estimates of environmental flow requirements to sustain river ecosystems are poorly correlated ‘
prepared by Mathis L. Messager ([email protected])
1. Overview and background ----------------------------------------------------------
This documentation describes the input and output data associated with the analysis presented in: Messager, M. L., Dickens, W. S. C., Eriyagama, N., Tharme, R. E., Stassen, R. (2024). Limited comparability of global and local estimates of
environmental flow requirements to sustain river ecosystems. https://doi.org/10.1088/1748-9326/ad1cb5.
Environmental flows (e-flows) are a central element of sustainable water resource management to mitigate the detrimental impacts of hydrological alteration on freshwater ecosystems and their benefits to people. Many nations strive to protect e-flows through policy, and thousands of local-scale e-flows assessments have been conducted globally, leveraging data and knowledge to quantify how much water must be provided to river ecosystems, and when, to keep them healthy. However, e-flows assessments and implementation are geographically uneven and cover a small fraction of rivers worldwide. This hinders globally consistent target-setting, monitoring and evaluation for international agreements to curb water scarcity and biodiversity loss. Therefore, dozens of models have been developed over the past two decades to estimate the e-flows requirements of rivers seamlessly across basins and administrative boundaries at a global scale.There has been little effort, however, to benchmark these models against locally derived e-flows estimates, which may limit confidence in the relevance of global estimates. The aim of this study was to assess whether current global methods reflect e-flows estimates used on the ground, by comparing global and local estimates for 1194 sites across 25 countries. We found that while global approaches broadly approximate the bulk volume of water that should be precautionarily provided to sustain aquatic ecosystems at the scale of large basins or countries, they explain a remarkably negligible 0%–1% of the global variability in locally derived estimates of the percentage of river flow that must be protected at a given site. Even when comparing assessments for individual countries, thus controlling for differences in local assessment methods among jurisdictions, global e-flows estimates only marginally compared (R2 ⩽ 0.31) to local estimates. Such a disconnect between global and local assessments of e-flows requirements limits the credibility of global estimates and associated targets for water use. To accelerate the global implementation of e-flows requires further concerted effort to compile and draw from the thousands of existing local e-flows assessments worldwide for developing a new generation of global models and bridging the gap from local to global scales..
The data repository includes data required to perform this analysis as well as the data outputs from this analysis. Input data from local e-flow assessments included herein were either provided by collaborators or extracted from published governmental and academic reports by the authors. Input hydrographic data not available for download elsewhere were provided by Dr. Bernhard Lehner and hydrological simulations from PCR-GLOBWB 2.0 at a spatial resolution of 5 arc-min (not provided herein) were provided by Dr. ir. Edwin H. Sutanudjaja.
All scripts necessary to reproduce this analysis are freely available for all purposes (and can be copied, modified and distributed) at: https://github.com/messamat/globalEF_testPy (for data-preformatting and global e-flow calculations) and https://github.com/messamat/globalEF_testR (for comparing global and local MAF and e-flow estimates). The structure of the analysis relies as much as possible on good enough practices in scientific computing, which users are encouraged to read.
2. Repository content ----------------------------------------------------------
The data repository has the following structure, which must be conserved to run the analysis workflow:
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data/
Formatted_data_Chandima_20211018: pre-formatted local e-flow assessment sites.
Formatted_data_Chandima_20211102: pre-formatted local e-flow assessment sites.
GEFIS_test_data/:
Master Data Table_20230424.xlsx: final database of local e-flow assessments.
HydroATLAS/: hydrographic data required for downscaling and mapping global MAF and e-flow estimates
HydroATLAS_metadata_MLMv11.xlsx: metadata of RiverATLAS attributes used in producing distribution histogram in Supplementary Material.
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results/
france_preprocessing.gdb: outputs from spatial formatting of local e-flow assessment data for the Rhone River basin in France. The main output file is /Rhone_EFpoints_cleanjoin.
mexico_preprocessing.gdb: outputs from spatial formatting of local e-flow assessment data for Mexico. The main output file is /Mexico_EFpoints_cleanjoin.
processing_outputs.gdb: outputs from overall spatial formatting of local e-flow assessment data. The fully formatted point data of the sites is: EFpoints_20230424_clean_riverjoin. Associated with global e-flow estimates: EFpoints_20230424_clean_globalEF.
victoria_preprocessing.gdb: outputs from spatial formatting of local e-flow assessment data for the state of Victoria, Australia. The main output file is /Victoria_EFpoints_cleanjoin.
EFpoints_20230424_clean_globalEF.csv: all global e-flow estimates extracted for local e-flow assessment sites.
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isimp2_qtot_accumulated15s.gdb.zip: all global MAF and e-flow estimates in raster format. In the analytical workflow, these data are in the results/ folder but here they have been placed outside to conform with the maximum file size limit of this dataverse.
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README_Technical_documentation_globalEFcomparison_Messageretal2023.pdf : documentation for this repository
3. Data format and projection ----------------------------------------------------------
The spatial datasets are distributed in ESRI® file geodatabase format. Please contact the author should you want the data in another format. These datasets are available in compressed zip file format. To use the data files, the zip files must first be decompressed.
All data layers are provided in geographic (latitude/longitude) projection, referenced to datum WGS84. In ESRI® software this projection is defined by the geographic coordinate system GCS_WGS_1984 and datum D_WGS_1984 (EPSG: 4326).
4. License and citations ----------------------------------------------------------
4.1 License agreement
This documentation and datasets are licensed under a Creative Commons Attribution-ShareAlike 4.0 International License (CC-BY-4.0 License). For all regulations regarding license grants, copyright, redistribution restrictions, required attributions, disclaimer of warranty, indemnification, liability, waiver of damages, and a precise definition of licensed materials, please refer to the License Agreement (https://creativecommons.org/licenses/by/4.0/legalcode). For a human-readable summary of the license, please see https://creativecommons.org/licenses/by/4.0/.
4.2 Citations and acknowledgements.
Citations and acknowledgements of this dataset should be made as follows:
Messager, M. L., Dickens, W. S. C., Eriyagama, N., Tharme, R. E., Stassen, R. (2024). Limited comparability of global and local estimates of
environmental flow requirements to sustain river ecosystems. Environmental Research Letters. https://doi.org/10.1088/1748-9326/ad1cb5.
We kindly ask users to cite this study in any published material produced using it. If possible, online links to this repository (DOI) should also be provided
Voici le groupe du personnel du Messager [Article]
No full textUndated article clipping from Le Messager identifying some of the staff of 1928: Elmyra Tremblay, Albert Bédard Philibert Buteau, Edmond Martin, Yvonne Blais, Dominique Dionne, F. X. Guay, Louis-Philippe Gagné. Valdor-L. Couture, Jean-Baptiste Couture, Faust Couture, Adélard Roy, Omer Gauvin, Liane Michaud (Mme. Gérard Marcotte), Fernand Martin, Irma Poirier (Mme. J.-Raoul Plante), Léonard Michaud, J.-E.-N. Bohémier, Mme. Henri F. Roy (Loretta Vachon), Eugène Gélinas, Delia DeBlois (Mme Flavius Dionne), and Joseph Girard.https://digitalcommons.usm.maine.edu/le-messager/1016/thumbnail.jp
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Committed, distanced, displaced, writer: Roland Barthes by Mathieu Messager
No full textResenha do livro Roland Barthes (2019), por Mathieu Messager, publicado na coleção Que sais-je ?, da editora francesa Presses Universitaires de France. Aliando aspectos biográficos e bibliográficos, Messager logra oferecer aos leitores possibilidades de diálogo entre Barthes e a contemporaneidade.Review of Roland Barthes (2019), by Mathieu Messager, published in Que sais-je? book collection by Presses Universitaires de France. Combining biographic and bibliographic aspects, Messager succeeds in offering to the readers possibilities for approaching Barthes and the contemporaneity
Mission de carottage 2013 - Plateau de Javakheti (Géorgie)
No full textEntre 2009 et 2012, quatre lacs ont fait l'objet de carottages sur le plateau : Paravani, Saghamo, Tabatskuri et Kartsakhi (fig. 1). Figure 1 : Localisation des carottages effectués sur le plateau de Javakheti. En rouge : carottages antérieurs au LIA (2009-2011), en blanc : carottages de 2012, en vert : carottages de 2013 (E. Messager) Suite aux résultats prometteurs issus de la séquence de Paravani (Messager et al., 2013), nous voulions poursuivre l'exploitation des archives lacustres du Pl..
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
The gardens of Villa A at Olpontis through pollen and phytolith analysis of soil samples
No full textPollen analysis of a soil sample from room 20 in Villa A at Oplontis revealed the presence of a garden with peculiar characters with respect to the other gardens of the Pompeian region, all dated to the A.D. 79. The age of the soil level analyzed in this study is still under determination but it is certainly older that the A.D. 79. At that time, the garden of room 20 was characterized by the significant presence of myrtle and lemon while the analysis of the A.D. 79 levels of room 93 in the same Villa as well as those of the other Pompeian villas, revealed the constant occurrence of olive trees and vines. This fact could indicate either the change in composition of gardens from the I century B.C. (presumed age of the analyzed sample) to the I century A.D. or the occurrence of contamination of more modern pollen grains in the soils of room 20. However, it cannot be excluded that, being olive and vine insect-pollinated, their pollen did not reach room 20, which is a rather restricted room within Villa A. The presence of probably cultivated vegetables (cabbage) indicates the vicinity of vegetable gardens. This is in agreement with the traditional way of Roman land use and management where small vegetable gardens were cultivated close or within gardens or orchards.
Phytolith analysis was performed for the first time in a garden of Roman age. The most interesting result consists in the abundance of bulliform cells which could indicate either dry summer conditions or exceptional water availability related to irrigation in the garden
Messager du tzar : galop pour piano / par E. Beïsson,... ; [ill. par] J. Eoch
No full textTitre uniforme : Beïsson, E. (18..-19.. ; compositeur). Compositeur. [Messager du tzar. Piano]Piano, Musique de -- +* 1800......- 1899......+:19e siècle:Galops (piano) -- +* 1800......- 1899......+:19e siècle
J. Messager et E. Colin, 25 danses normandes, avec photographies
No full textDubuc André. J. Messager et E. Colin, 25 danses normandes, avec photographies. In: Annales de Normandie, 3ᵉ année, n°3-4, 1953. p. 353
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