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DEMNA : Monitoring the biological quality of water bodies in Wallonia through Macrophytes diversity (Since 2005)

Latest version published by Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA) on Jun 22, 2017 Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA)

The dataset includes occurrences from the macrophytic inventories carried out by the hydrobiological unit at the department for the study of the natural and argicultural environment (DEMNA-DGO3-public service of Wallonia) within a network for monitoring the quality of surface water masses in Wallonia, since 2005 (monitoring biological, physico-chemical, hydromorphological aspects of the water bodies).

Macrophytic inventories arise from assignments related to the Water Framework directive on water (FWD - 2000/60/CE). Macrophytes consitute one of the 4 biological indicator groups used to estimate and follow the biological quality of surface water bodies, with macroinvertebrates, diatoms and fishes (doi:10.15468/jgddny). The monitoring network on which they are based is composed of more than 440 sites, distributed among the hydrographic districts of the Meuse, the Scheldt, the Rhine and the Seine (Wallonia). Sampling is usually performed along a 100 meters section of the water stream. Field observations are supplemented by laboratory identification of taken specimens.

More information, or quality evaluation results are available upon request adressed to the DEMNA, and we intend to increase the amount of information available through the dataset in the upcoming updates, which will be done annually. This dataset does not replace any official convention on the provision of biological data delivered by the department.

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 13,288 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Downloads

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 13,288 records in English (364 KB) - Update frequency: annually
Metadata as an EML file download in English (21 KB)
Metadata as an RTF file download in English (17 KB)

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Origin of the information: SPW-DGO3-DEMNA-Hydrobiology Unit

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA). This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 32eaab4b-f0cf-4a06-9ddc-0f6dd4fce9fb.  Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA) publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Belgium Biodiversity Platform.

Keywords

Occurrence; macrophytes; Wallonia; Rivers; water bodies; freshwater; Belgium; Water directive; algae; IBMR; Monitoring; control Network; Observation

Contacts

Who created the resource:

Jonathan DEVRIESE
Principal adjoint
Department d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE

Who can answer questions about the resource:

Coupremanne Maxime
Data liaison officer
Belgian Biodiversity Platform 22 Avenue de la faculté 5030 Gembloux Namur BE
Jonathan DEVRIESE
Principal adjoint
Department d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE

Who filled in the metadata:

Maxime Coupremanne
Data Liaison officer
Department d'étude du milieu naturel et agricole 22 Avenue de la faculté 5030 Gembloux Namur BE
Frédéric Cherot
Biodiversity experty
Department d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE
Jonathan DEVRIESE
Principal adjoint
Department d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur

Who else was associated with the resource:

Principal Investigator
François Darchambeau
Adjunct
Department d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE
Originator
Jonathan DEVRIESE
Principal adjunct
Department d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE
Curator
Maxime Coupremanne
Belgian Biodiversity Platform 22 Avenue de la faculté 5030 Gembloux Namur BE

Geographic Coverage

Wallonia, southern belgium

Bounding Coordinates South West [49.497, 2.681], North East [50.806, 6.383]

Taxonomic Coverage

Macrophyes from southern Belgium. The dataset includes more than 200 taxa with a taxonomic resolution ranging from the family to variety/subspecies, but consisting mostly in species (more than 160) or genus (more than 30).

Kingdom  Plantae (Plants),  Chromista (Chromists),  Fungi (mycetes),  Bacteria (bacterium)
Phylum  Ascomycota (Ascomycetes),  Bryophyta (Mosses),  Charophyta (Charophytes -Green algae),  Chlorophyta (Clorophytes -Green algae),  Cyanobacteria (Cyanophytes),  Marchantiophyta (Liverworts),  Ochrophyta (Golden and brown algae),  Rhodophyta (Red algae),  Tracheophyta (Vascular plants)

Temporal Coverage

Start Date / End Date 2005-05-12 / 2015-09-29

Project Data

This Directive covers a complex set of objectives, instruments and obligations. The directive is mainly concerned with the organization and management of water at the river basin level.

Title Water Framework Directive (FWD)
Identifier 2000/60/CE
Funding Countries are responsible for achieving the objectives of the Directive. In the context of this dataset, funding is provided by the Public Service of Wallonia (SPW).
Study Area Description Water bodies from Europe,Managed at the basin scale. According to six-year management cycles (2010-2015, 2016-2021, etc.). International or national basin districts have been delineated. These districts encompass not only the entire hydrographic network but also the drainage area and the estuaries, including groundwater, marine and related associated environments.
Design Description The aim of this Directive is to achieve a good biological and chemical quality of the waters masses. Attention is focused on: - the composition of fauna and flora - the amount of oxygen or nutrients (fertilizer) in the water - pH - Hydromorphological aspects (current,etc.) of river beds

The personnel involved in the project:

Principal Investigator
François Darchambeau

Sampling Methods

Survey protocol is based on the document from the European Comittee for Standardization : CEN 230165. Sampling period extends from may to september. A section of the river of about 100 meters long is determined to include both slow and fast flowing areas. The GPS position is recorded at the most downstream point of this sampling station. The transect is traveled a first time by operators to position milestones every 25 meters, using a decameter, which will serve as visual benchmarks for sampling. This first run is done from the river banks, but if there is no other choice to cross it through the river bed, and a few minutes break will be observed so that the turbidity of the water does not affect the sampling. Prospecting the transect is usually performed by two operators, each one sampling his own side of the water bed, and going upstream. For larger rivers (river bed higher 8 meters), the operators will walk together, crossing to the other bank when the ending point of the station is reached. During the prospecting, operators pick up macrophytes samples (by hand or using a knife for substrate scraping). Samples are taken in the river bed, on the bottom or any other substrate (rocks, deadwood, etc.) located in the bed. Samples are also taken within the river banks, when not overpassing more than 30 cm above the water level. Smaller specimens are stored into Small pots of formaldehyde (35-40%) or water (hydrophytes, helophytes). Plastic bags are used for larger specimens. A preliminary field identification is done by the operators with the help of a magnifying glass (x12 or x20).The pre-identifications are noted, as are their abundance, the croqui of the facies of the river and the substrates encountered.

Study Extent The monitoring at the basis of this dataset started in 2005 and is focused on surface water bodies from Wallonia. The current permanent monitoring network is composed of more than 440 control stations, distributed among the hydrographic districts of the Meuse, the Scheldt, the Rhine, and the Seine.
Quality Control Back to the laboratory, samples of algae and bryophytes are examined with a binocular (magnification 0 to 100X). Cellular examination of the samples can be done under a microscope (magnification 40x, 100x, 250x, 400x, 1000X). Cross-sections in the stems and leaves allow observation of the cells, of the walls, pores, the possible presence of oil bodies and any other elements that are part of the determination keys. 108/5000 The list of taxa established in the field is compared and verified with laboratory identification.

Method step description:

  1. Implantation or identification of the segment to be inventoried.
  2. Prospection of the station, Observation of facies and substrate
  3. Sampling and preliminary identification.
  4. Packaging and labeling of the samples.
  5. Laboratory identifications, validation of field observations.
  6. Importing results into the DEMNA hydrobiology unit's database : AQUABIO

Additional Metadata

We expect to implement the data completeness with other informations (such as substrates, relative coverages, etc.) into the upcoming updates (expected for early 2018 and following republications).

Purpose The curent network supports EU Water Framework Directive relative tasks, for the southern Belgium. The biological quality of surface water bodies is determined by 4 biological indicators groups (macrophytes, macroinvertebrates, diatoms and fishes). The reporting to Europe for macrophytes is done through the biological macrophytic index in river (IBMR). Even if the data can be used for other activites, the monitoring and sampling designs highly rely on the guidelines provided by the FWD.
Maintenance Description Data are reported to Europe annually, which requires a consequent validation work. Thereby, updates of this data set will be performed by implementing previous-year new data in parallel with this reporting (eg. data from 2016 will be available early 2017).
Alternative Identifiers http://ipt.biodiversity.be/resource?r=gfgh