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292<br />

Table 1 continued Selected soil test methodologies<br />

Test Organism Duration Endpoints Reference/Source Comments<br />

Invertebrate Fauna (continued)<br />

Enchytraeus albidus<br />

(Oligochaeta)<br />

Cognettia<br />

sphagnetorum<br />

(Oligochaeta)<br />

Folsomia c<strong>and</strong>ida<br />

(Collembola)<br />

Table 1 continued overleaf<br />

21 - 42d S/R (i) OECD (2000). OECD 220 Enchytraeidae Reproduction Test<br />

(Draft).<br />

(ii) ISO/CD 16387 Soil quality - Effects of soil pollutants on<br />

enchytraeids: Determination of effects on reproduction (draft).<br />

70 d G/R Rundgren & Augustsson (1998). Test on the Enchytraeid<br />

Cognettia sphagnetorum. In H<strong>and</strong>book of Soil Invertebrates<br />

(Eds. Hans Løkke & Cornelis A.M. Van Gestel). John Wiley &<br />

Sons: Chichester, UK.<br />

28d S/R ISO 11267 Soil Quality – Inhibition of reproduction of<br />

Collembola (Folsomia c<strong>and</strong>ida) (1999).<br />

− Adult mortality is assessed after 3 weeks.<br />

− Reproduction (juvenile number) is assessed after a further 3 weeks<br />

(6 weeks total).<br />

− Shorter generation time than earthworms.<br />

− Ease of h<strong>and</strong>ling/culture.<br />

− Enchytraeidae feed on decomposing plant material <strong>and</strong> associated<br />

microorganisms i.e., fungi, bacteria & algae.<br />

− Enchytraeids are abundant in many soil types including those from<br />

which earthworms are often absent. They account <strong>for</strong> approximately<br />

0.5% of the edaphon (soil biota) by mass (up to 50 g per m2 ). This<br />

corresponds to approximately 100,000 per m2 .<br />

− Mortality <strong>and</strong> asexual reproduction (fragmentation rate of adults)<br />

determined weekly over 10 weeks.<br />

− Easy to culture.<br />

− Enchytraeidae feed on decomposing plant material <strong>and</strong> associated<br />

microorganisms i.e., fungi, bacteria & algae.<br />

− C. spagnetorum is common in bogs, <strong>for</strong>ests <strong>and</strong> other highly organic<br />

habitats. They are present at 10,000 – 25,000 per m 2 .<br />

− Survival <strong>and</strong> reproduction after 4 weeks.<br />

− Short generation time.<br />

− Ease of culture.<br />

− Springtails are important soil litter arthropods playing a role in soil<br />

organic matter breakdown <strong>and</strong> nutrients recycling.<br />

− Feed on bacteria <strong>and</strong> fungi.<br />

− Collembola are the most abundant soil fauna present at 40,000 to<br />

70,000 per m2 . Prey <strong>for</strong> epigeic invertebrates such as mites,<br />

centipedes, spiders <strong>and</strong> carabid beetles.<br />

APPENDIX V

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