Descrição
'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 de Dados
Os dados deste recurso de ocorrência foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 125.374 registros.
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.
Versões
A tabela abaixo mostra apenas versões de recursos que são publicamente acessíveis.
Como citar
Pesquisadores deveriam citar esta obra da seguinte maneira:
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
Direitos
Pesquisadores devem respeitar a seguinte declaração de direitos:
O editor e o detentor dos direitos deste trabalho é 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
Este recurso foi registrado no GBIF e atribuído ao seguinte GBIF UUID: 658e39ee-33ea-40e5-b1d3-b0c0282e20d7. Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA) publica este recurso, e está registrado no GBIF como um publicador de dados aprovado por Belgian Biodiversity Platform.
Palavras-chave
Occurrence; diatoms; rivers; biological quality; Wallonia; DEMNA; algae; Observation
Contatos
- Provedor Dos Metadados ●
- Originador ●
- Ponto De Contato
- Originador
- Publicador
https://orcid.org/0000-0002-9052-9500
Cobertura Geográfica
The sampling network is composed of about 440 sites in Wallonia
| Coordenadas delimitadoras | Sul Oeste [49,506, 2,94], Norte Leste [50,978, 6,341] |
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Cobertura Taxonômica
Diatoms
| Reino | Chromista (Kelp, Diatoms, And Allies) |
|---|---|
| Class | Bacillariophyceae Dangeard, 1933[1] (diatoms) |
Cobertura Temporal
| Data Inicial / Data final | 2005-06-17 / 2021-11-16 |
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Métodos de Amostragem
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 Estudo | 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. |
|---|---|
| Controle de Qualidade | 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. |
Descrição dos passos do método:
- 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
Metadados Adicionais
| Descrição da manutenção | 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 |