Conceptid (2) | Preflabel |
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AHBDM181 | Ash-free dry weight biomass of Heptagenia orbiticola per unit area of the bed by identification by optical microscopy and gravimetric determination of loss on ignition |
ZBN00680 | Abundance of Heptagenia orbiticola per unit area of the bed by sieving and picking under an optical microscope |