RIVM (NL) - Earthworm Observations i…

Occurrence dataset published by National Institute for Public Health and the Environment (RIVM)

  • 2,212

    Occurrences
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Summary

Full Title

RIVM (NL) - Earthworm Observations in Soil Samples

Description

The dataset contains density data (number per square meter) of earthworms in The Netherlands. The data were collected from 1997 up to and including 2011.

Temporal coverages

Date range: May 1, 1997 - May 30, 2011

Language of Data

 

Administrative contact
Ton Schouten
Staff
RIVM
P.O. Box 1 NL-3720 BA Bilthoven Netherlands +31 30 2749111
Metadata author
Jaap Bogte
Staff
RIVM
P.O. Box 1 NL-3720 BA Bilthoven Netherlands +31 30 2749111
Originator
Jaap Bogte
Staff
RIVM
P.O. Box 1 NL-3720 BA Bilthoven Netherlands +31 30 2749111

Published by

National Institute for Public Health and the Environment (RIVM)

Publication Date

Feb 24, 2014

Registration Date

Jul 5, 2013

Hosted by

Netherlands Biodiversity Information Facility (NLBIF)

Served by

NLBIF IPT

Alternative Identifiers

External Data

Metadata Documents

Taxonomic Coverage

Earthworms

FAMILY
Lumbricidae (Earthworms)

2,212 Georeferenced data

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Description

The Netherlands

About

What does this map show?

Geographic Coverage

Project

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Associated parties

Publisher
Cees H.J. Hof
Node Manager
NLBIF
P.O. Box 93102 NL-1090 BC Amsterdam Netherlands +31 20 5255496

Methodology

Study extent

n/a

Sampling description

Soil samples were taken in The Netherlands almost every year from 1997 up to and including 2011. Each year about 40 locations were sampled, several of them more than once, in a five years cycle. Altogether about 390 different locations were sampled in the period 1997 - 2011. Per location six soil samples (cubes of 20x20x20 cm of topsoil) were taken and analyzed for earthworms.

Method Steps

  1. Earthworm density was calculated as number per square meter. The coordinates of the locations are accurate up till 1 km. Higher taxonomic groups (kingdom, phylum, class, order, family) were abstracted form the Fauna Europaea (http://www.faunaeur.org/) database for each species and added to the dataset.