DEMNA-DNE : Occurrences of benthic macroinvertebrates in running waters of Wallonia, Belgium

最新版本 由 Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA) 發佈於 Apr 30, 2020 Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA)

"DEMNA: Occurrences of macroinvertebrates in running waters of Wallonia" is an occurrence-only dataset created by the Hydrobiology unit of the Direction de la Nature et de l’Eau [Département de l'Étude du Milieu Naturel et Agricole (SPW-DEMNA-DNE)].

The data come from an ongoing network for the monitoring of the biological quality of running waters in Wallonia maintained under the Water Framework Directive of European Union (Directive 2000/60/CE) (European Council, 2000). The current monitoring network is composed of more than 400 sites, distributed among all streams (brooks to largest rivers/canals) from the hydrographic districts of the Meuse, the Scheldt, the Rhine and the Seine in Wallonia. Macroinvertebrates are one of the 4 indicator groups used to assess the biological quality with macrophytes, diatoms, and fishes. The macroinvertebrate occurrences are obtained by the analysis of standardized IBGN/IBGA samplings, done according a methodology derived from T90-350 (2004) French standard (see Vanden Bossche & Usseglio-Polatera, 2005 in Hydrobiologia, 551: 253-271). Some taxa encountered during the monitoring are not included into this GBIF dataset (when identification level is particularly imprecise, i.e. higher than family E.G: 'poriferans', 'Bryozoa', etc...).

More information and macroinvertebrate samples are available upon request addressed to the DEMNA.

Data Records

The data in this 出現紀錄 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 134,201 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.

下載

下載最新版本的Darwin Core Archive (DwC-A)資源,或資源元數據的EML或RTF文字檔。

DwC-A資料集 下載 134,201 紀錄 在 English 中 (2 MB) - Update frequency: 每年一次
元數據EML檔 下載 在 English 中 (26 KB)
元數據RTF文字檔 下載 在 English 中 (21 KB)

版本

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

如何引用

研究者應依照以下指示引用此資源。:

Hydrobiology Unit (2019)- DEMNA-DNE : Occurrences of benthic macroinvertebrates in running waters of Wallonia (1990-2016). v1. Service Public de Wallonie – Département de l’Etude du Milieu naturel et agricole (SPW – DEMNA). Dataset/Occurrence.

Rights

研究者應尊重以下權利聲明。:

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 註冊

此資源已向GBIF註冊,並指定以下之GBIF UUID: 59b549c0-7da9-4095-98c1-56da90837723。  Service Public de Wallonie – Département d’Etude du Milieu Naturel et Agricole (SPW – DEMNA) 發佈此資源,並經由Belgian Biodiversity Platform同意向GBIF註冊成為資料發佈者。

關鍵字

Occurrence; Surface Waters; DEMNA; Wallonia; Macroinvertebrates; Rivers; Specimen

聯絡資訊

資源建立者:

François Darchambeau
Unit director
Département d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE
Frédéric Chérot
Expert
Département d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE
- All members of the Hydrobiology Unit (DEMNA-DNE)
Officers
Département d'étude du milieu naturel et agricole BE

可回覆此資源相關問題者:

Maxime Coupremanne
Data liaison officer
Belgian Biodiversity Platform Avenue Maréchal Juin 23 5030 Gembloux Namur BE
Frédéric Chérot
Expert
Département d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE
François Darchambeau
Unit director
Département d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE

元數據填寫者:

Frédéric Chérot
Expert
Département d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE

與此資源的相關者:

研究主持人
François Darchambeau
Unit director
Département d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE
內容提供者
Frédéric Chérot
Expert
Département d'étude du milieu naturel et agricole Avenue Maréchal Juin 23 5030 Gembloux Namur BE
內容提供者
Etienne Delooz
Expert
Université Libre de Bruxelles BE
內容提供者
Roger Cammaerts
Expert
Département d'étude du milieu naturel et agricole BE
內容提供者
Pierre Gérard
Expert
Département d'étude du milieu naturel et agricole BE
內容提供者
Frédéric Grisez
Expert
Département d'étude du milieu naturel et agricole BE
內容提供者
Guy Josens
Expert
Université Libre de Bruxelles BE
內容提供者
Christine Keulen
Expert
Département d'étude du milieu naturel et agricole BE
內容提供者
Sébastien Richez
Expert
Département d'étude du milieu naturel et agricole BE
內容提供者
Jean-Pierre Vanden Bossche
Expert
Département d'étude du milieu naturel et agricole BE
發布者
Maxime Coupremanne
Data liaison officer
Belgian Biodiversity Platform Avenue Maréchal Juin 23 5030 Gembloux Namur BE

地理涵蓋範圍

Wallonia, Southern Belgium.

界定座標範圍 緯度南界 經度西界 [49.506, 2.909], 緯度北界 經度東界 [50.842, 6.342]

分類群涵蓋範圍

Freshwater macroinvertebrates from Wallonia. The observations include 644 taxa, mainly Arthropoda and Molluscs, identified at the following levels: species (225), genera (249) and famillies (170) in the last version.

Kingdom  Animalia (Animals)
Phylum  Annelida (Ringed worms),  Arthropoda (Arthropods),  Cnidaria (Cnidarians),  Mollusca (Molluscs),  Platyheminthes (Flat worms),  Porifera (Sponges)

時間涵蓋範圍

起始日期 / 結束日期 1990-01-15 / 2018-10-24

取樣方法

The T90-350 (2004) French standard describing the “Indice Biotique Global Normalisé” (IBGN) provides for sampling (with a Surber net and at hand) 8 microhabitats on each site, i.e. 8 areas of watercourse having a well-defined bottom substrate and surface velocity.

研究範圍 The current monitoring network is composed of more than 400 sampling sites 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. The current network and method designs were set up in 2004, but the dataset also includes older data coming from different sampling events performed by the hydrobiology unit since 1990. Given the methodologies used for collecting samples (cf. infra), only information on the presence of species (positive occurrence) can be drawn from it, nothing can be concluded from absences.
品質控管 The Department is ISO9001 certified.

方法步驟描述:

  1. [Sampling Shallow watercourses, possible to walk] - methodology derived from French IBGN: The site is defined as a section of the watercourse equal to about ten times the width of the wet bed. Practically, the water course section length must be adapted to sample eight different microhabitats. For the small brooks (width inferior to one meter), this value of ten times the width defined in T90-350 (2004) French standard is frequently too low and for the wide streams (width superior to about twenty meters) it is unnecessarily high. Practically, the length of the site varies generally between 20 and 30 m. Ideally, each microhabitat selected for sampling is characterized by well-defined bottom substrate and surface velocity areas, the 8 microhabitats being distributed between lotic and lentic zones, between mineral and vegetable substrates, between the bed, the left and the right banks. The substrates of microhabitats (and then the microhabitats themselves) are selected according to a decreasing order of habitability as defined in T90-350 (2004) French standard. Each microhabitat or substrate-velocity area is sampled 1 to 5 times through the site (and not just one time as in the French standard), depending on the substrate, using a push net (‘Haveneau’) with a maximum 500µm mesh size. In the derived methodology used in Wallonia, the litters are sampled by kick sampling one time, the roots and macrophytes three times, the stones and pebbles five times for the same surface velocity category [the velocity categories A-E being defined according to T90-350 (2004) French standard]. Consequently, the final sample includes three or five replicates for some substrates. A surface of substrate equivalent to 1/20 m² (about 20*25 cm) is sieved by the operator for each replicate. Net samples, usually composed of a mixture of plants, mineral fragments, and macroinvertebrates, are dumped into a bucket of water once this part of the sampling is completed. Independently, a tuft of Bryophytes, 10-20 stones and 1-3 blocks (stones and blocks each equivalent to 1/20 m²), are collected at hand in a lotic and in a lentic areas of the site, transferred in a bucket and “cleaned” to detach the fixed animals. The solid contents of both buckets are removed with a 500 μm mesh sieve. The sieve is then held in a light stream of water to remove the fine elements (vase, fine sand, etc.) and the largest debris are eliminated. Afterwards, the remaining contents of the sieve are introduced into a labelled flask (numbered with the site code, dated etc.). Subsample of fragile or very small sized organisms (mainly Plecoptera and Ephemeroptera) and organisms easily destroyed by freezing (flat worm, earthworm) are packaged separately in ethanol, itself introduced in the labelled flask.
  2. [Sampling Deep watercourses] : In deep watercourses, such the Meuse or the Scheldt, where the kick and hand samplings are impossible or very difficult, an adapted methodology corresponding to French “Indice Biotique Global Adapté” (IBGA) is used. It differs essentially of the methodology for shallow watercourses by the length of the site (about 1000m), by the use of (3) artificial substrates to replace the kick sampling and by the use of a dredger to explore the river bed from a small boot. Artificial substrates are standardized in size bags full of stones and pebbles, submerged in the watercourse for about 5-6 weeks and fixed on the bank by a rope (fastened to a tree or a tent peg). The artificial substrates work as small traps, being attractive for numerous organisms in an environment generally poor in stones, a minimal delay for colonization being necessary. When the delay is elapsed, the artificial substrates are removed of water and their content “cleaned” at hand in buckets to extract all organisms. The solid contents of buckets are then removed with a 500 μm mesh sieve. The sieve is held in a light stream of water to remove the fine elements (vase, fine sand, etc.) and the largest debris are eliminated. Afterwards, the remaining contents of the sieve are introduced into a labelled flask (numbered with the site code, dated etc.). Subsample of fragile or very small sized organisms (mainly Plecoptera and Ephemeroptera) and organisms easily destroyed by freezing (flat worm, earthworm) are packaged separately in ethanol, itself introduced in the labelled flask. Other groups (Bryozoans etc.): Family level (or higher level, in this case the data not included in GBIF dataset).
  3. [Samples transport] : The flasks including the samples are carried in a fridge from field to laboratory and freezed to minus 18° at laboratory.
  4. Laboratory treatment of samples
  5. [Laboratory treatment 1 - identification of organisms] : According to T90-350 (2004) French standard, organisms must be identified at family level except for some difficult groups treated at a higher rank (Acarina, Nematoda etc.) However, to be able to follow some recent changes in macroinverteabrate communities of Walloon watercourses following mainly from arrival of exotic (invasive) species, (at least a subsample of) different taxa are identified at genus or species level. The present identification level per taxon is the following: Crustaceans: Species level, Flatworms: Species level, Insects: Level variable depending to the order: Ephemeroptera: Genus level (except Caenidae, Ephemerellidae, Ephemeridae, Polymitarcidae, Potamanthidae and Sipholnuridae at species level), Coleoptera: Family level, Diptera: Family level (except Athericidae and Stratiomyiidae at species level), Heteroptera: Species level for adults, genus or family level for nymphs, Megaloptera: Species level, Odonata: Genus level, Plecoptera: Genus level (except Perlidae at species level), Trichoptera: Family level (except Ecnomidae, some Hydropsychidae and Odontoceridae at species level), Other orders: Family level. Leechs: Genus level (except Erpbodellidae at family level, some Glosiphoniidae and Piscicolidae at species level), Molluscs: Species level.
  6. [Laboratory treatment 2 - The sorting of organisms] : Animals collected in the samples must be separated of debris (plants fragments, small stones, sand, vase) and stored in 70-80% denatured ethanol, a long and difficult task. First, each sample is thawed in water, then transferred on a (or several depending its size) column(s) of sieves partially submerged in water and cleaned with a fine water jet. Content of each sieve of same mesh is transferred independently in a tray, subdivided in smaller trays and the organisms sorted individually with entomological forceps to be stored in ethanol until identification.
  7. [Laboratory treatment 3 - Data encoding and determination of site biological quality] : When the identification is finished, the results (i.e. the species list) are encoded in the unit database Aquabio, verified and validated. The IBGN/IBGA indices and biological quality of the site are established and the sample definitively labelled and stored permanently in the DEMNA collection.

額外的元數據

目的 Provide free online access to the main occurrence data following from the monitoring of the biological quality of running waters in Wallonia complying with our legal obligations (‘PSI’ Directive (EU) 2019/1024 and regional decrees about open data including the "Décret conjoint de la Région wallonne et de la Communauté française du 12 juillet 2017 relatif à la réutilisation des informations du secteur public et visant à l’établissement d’une politique de données ouvertes”).
維護說明 The dataset is updated on an annual basis.
替代的識別碼 59b549c0-7da9-4095-98c1-56da90837723
https://ipt.biodiversity.be/resource?r=demna_mi