170,265 research outputs found
Le Messager, Edition-Souvenir du Messager - Section C, October 1938
No full textDédicace de la nouvelle église Saint-Pierre et Saint-Paulhttps://digitalcommons.usm.maine.edu/fac-le-messager-print/1128/thumbnail.jp
C\u27etait a cote du Messager Article with Attachments
No full textArticle clipping from Le Messager of a photo depicting a collapsed building that was near the Le Messager offices 45 years prior.
Also included: A photocopy of the Le Messager staff on their 47th anniversary with separate notation identifying the persons in the photo.https://digitalcommons.usm.maine.edu/le-messager/1012/thumbnail.jp
Le Messager dans ses Debuts [Article]
No full textUndated article clipping from Le Messager c. 1940 with a photograph of their first location near Lincoln Street in Lewiston, Maine.https://digitalcommons.usm.maine.edu/le-messager/1018/thumbnail.jp
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
Paramètres et groupes spatiaux de quelques α˗cyanocinnamonitriles substitués
No full textMessager J.-C. Paramètres et groupes spatiaux de quelques α˗cyanocinnamonitriles substitués. In: Bulletin de la Société française de Minéralogie et de Cristallographie, volume 89, 1, 1966. p. 134
Staff of Le Messager c.1880
No full textStaff of Le Messager outside their first Lincoln St Office, in Lewiston, Maine, c. 1880.
Note 1 included with photo:
The Office staff of Le Messager
Note 1 included with photo:The Office staff of Le Messager1st row (l-R)M. J. B. Couture, directeur, M. P. S. Guilbault, contremaitreM. Henri Carpentier, M. Omer Gauvin, M. Arthur Brunelle,2nd Row:M. F. X. Gray, M. Albert Bedard, M. Odule Laplante, M. Joseph Belanger, M. N. L. Gendreau, M. Runeau,3rd rowMiss Corine Gauthier (Mrs. Eugene Dumais), [^Loretta Vachon] Miss Blanche Verville(Mrs. ALfred Sutton, and Miss Camile Lessard (Mrs. Bissonnette)Miss Lessard is the author of the famous book Canuk Note 2 included with photo:Le personel du Messager avant de guitter les atelieres de la rue Lincoln pour ceux de la rue Lisbon. Corrine Gauthier, Loretta Vachon, Blanche Verville, Camille Lessard (LIANE) nom de plumeXavier Guay, ---Bedard, Oudule Laplante, ---Belanger, --- ---.J. B. Couture, -- Guilbalt, ---Carpentier, omer Gauvin, ---Brunelle, L. N. Gendreauhttps://digitalcommons.usm.maine.edu/le-messager/1000/thumbnail.jp
Le Messager Office [Photograph]
No full textUndated photograph of Le Messager Office, c. 1938https://digitalcommons.usm.maine.edu/le-messager/1037/thumbnail.jp
Part 1, Series C, Number 9: Messager de Taiti
No full textPhotocopies of "Messager de Taiti", newspaper for French Oceania, as part of H.E.Maude's research for his book, "Slavers in Paradise"
Almanach historique nommé le Messager boiteux
No full textVariante(s) de titre : Le Messager boiteux, imprimé avec privilège du RoyVariante(s) de titre : Le Véritable Messager boiteux de ColmarVariante(s) de titre : Almanac historique nommé le Messager boiteux : contenant des observations astrologiques sur chaque mois, le cours du soleil & de la lune, & le changement de l'air de jour en jour exactement calculé ... Avec les foires de France, d'Allemagne, Suisse, Savoie, Haut- & Bas-Rhin, Bourgogne, Lorraine, &c. Enfin une relation exacte & curieuse des choses les plus remarquables arrivées en Europe dans l'année précédentele tout fidèlement composé & recueilli par Antoine Souci, astrolog. & hist.Variante(s) de titre : Almanac historique nommé le Messager boiteux : contenant des observations astronomiques sur chaque mois, le cours du soleil & de la lune, & le tems présumable des lunaisons & des jours ... Les principales foires. Enfin une relation exacte & curieuse des choses les plus remarquables arrivées en Europe dans l'année précédente, le tout fidèlement composé & recueilli par Antoine Souci, astronome & hist.Variante(s) de titre : Almanach historique nommé le Messager boiteux : contenant des observations astronomiques sur chaque mois, le cours du soleil et de la lune, et le tems présumable des lunaisons et des jours ... ; en outre les principales foires ; et enfin des histoires instructives, curieuses et amusantes ; le tout fidèlement composé & recueilli par Antoine Souci, astronome & historiographeEtat de collection : 1811Appartient à l’ensemble documentaire : Alsace
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
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