Descripción
'DEMNA-DNE : Occurrences of Diatoms (Bacillariophyceae) in running waters of Wallonia, Belgium' is a presence-only occurrence dataset resulting of the biological monitoring of surface water bodies carried out by the hydrobiology unit of the Département d'Etude du Milieu Naturel et Agricole and its partners (SPW-ARNE-DEMNA).
The diatoms monitoring is running since 2005, in order to assess the trends of the biological status of surface water bodies in Wallonia, together with macrohpytes, fishes and macro invertebrates indicators. The current monitoring network is composed of more than 440 sites, distributed among all streams from the hydrographic districts of the Meuse, the Scheldt, the Rhine and the Seine in Wallonia.
The monitoring is ongoing in the context of the EU Water Framework Directive, and thus follows standardised sampling protocols (IPS -Specific Pollution Sensitivity Index, according a methodology derived from the French standard AFNOR XP T90-354).
The data has been cleaned for quality issues prior to GBIF publication and thus is not prefectly comparable to the expertised data basis used for the IPS calculation and biological quality reporting. Please feel free to get in touch for any request or return regarding this dataset or the underlying monitoring work.
Registros
Los datos en este recurso de registros biológicos han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 125.374 registros.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
Msaaf M, DEMNA-DNE hydrobiology unit and collaborators (2023). "DEMNA-DNE : Occurrences of Diatoms (Bacillariophyceae) in running waters of Wallonia, Belgium." Version 1.0. Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA). Occurrence dataset. https://ipt.biodiversity.be/resource?r=demnadiatoms&v=1.0
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA). Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento (CC-BY 4.0).
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: 658e39ee-33ea-40e5-b1d3-b0c0282e20d7. Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA) publica este recurso y está registrado en GBIF como un publicador de datos avalado por Belgian Biodiversity Platform.
Palabras clave
Occurrence; diatoms; rivers; biological quality; Wallonia; DEMNA; algae; Observation
Contactos
- Proveedor De Los Metadatos ●
- Originador ●
- Punto De Contacto
- Originador
- Publicador
https://orcid.org/0000-0002-9052-9500
Cobertura geográfica
The sampling network is composed of about 440 sites in Wallonia
| Coordenadas límite | Latitud Mínima Longitud Mínima [49,506, 2,94], Latitud Máxima Longitud Máxima [50,978, 6,341] |
|---|
Cobertura taxonómica
Diatoms
| Reino | Chromista (Kelp, Diatoms, And Allies) |
|---|---|
| Class | Bacillariophyceae Dangeard, 1933[1] (diatoms) |
Cobertura temporal
| Fecha Inicial / Fecha Final | 2005-06-17 / 2021-11-16 |
|---|
Métodos de muestreo
The sampling methodology is derived from the french standard (NF T90-354). Sampling is generally carried out on well-lit sections, preferably on submerged stones, pebbles or boulders, so as to present a diatomic population representative of environmental conditions. Biofilm is collected by scraping the substrate surface with a toothbrush or scraper over a total area of at least 100 cm².
| Área de Estudio | The current monitoring network is composed of more than 440 sampling stations distributed among the Wallonia. The concerned habitats include lentic and lotic brooks, streams, largest rivers and canals from the hydrographic districts of the Meuse, the Scheldt, the Rhine and the Seine. |
|---|---|
| Control de Calidad | The Department is ISO9001 certified. Some sampling was performed by external contractors, also certified. Data are submitted to a procedural validation by experts during samling, sorting, identification and encoding of records within the AQUABIO database. |
Descripción de la metodología paso a paso:
- Choice of surfaces to be sampled
- Diatom film sampling according to NF T90-354 standard
- Recovery of the biofilm in a pillbox with alcohol
- Mounting on microscope coverslips
- Identification and counting
- Import of the samling results into the AQUABIO Database
- Control and validation of content
- Cleaning and DarwinCore transformation of validated data and publication to GBIF
Metadatos adicionales
| Descripción de mantenimiento | the dataset will be updated annually, to incorporate validated field season data. |
|---|---|
| Identificadores alternativos | 658e39ee-33ea-40e5-b1d3-b0c0282e20d7 |
| https://ipt.biodiversity.be/resource?r=demnadiatoms |