Logo NoMBSI

Project NoMBSI

(Non-lethal Method of Benthos Sampling and Identification)

Index NoASPT
Calculating of the values of NoASPT index

Index NoASPT is intended to present ecological status of the watercourse in numerical form on the basis of the structure of macrobenthos, sampled and analysed in accordance to the procedure NoMBSI. Preliminary range values of the index calculated for different biocoenotic types of watercourse are based on the digital images analysed independently by four researchers/. Values presented as "ModBMWP" are in fact values of BMWPpl index (Bis & Mikulec 2013), adapted and averaged as results of different requirements for the levels of identification between both methods.
Animals found in samples should be identified with using the Key.

The calculation of NoASPT values is very similar to the methods of calculation of ASPT index (Average Score Per Taxon) in BMWPpl procedure. Scores for particular taxa are presented in table 1. Average value should be calculated from summed values of ModBMWP of each taxa found in a sample. Taxa ocurred in a sample as 10-20 individuals should be counted twice and those occured as more than 20 individuals should be counted three times. Suggested, preliminary range of NoASPT index for III, IV and VI abiotic types and for different ecological states are presented in table 2.

Table 1. Values of ModBMWP for particular taxa, which could be identified in samples arranged in accordance with NoMBSI.
Acroloxus 3 Ephemerellidae 7 Perlidae 8
Aeschnidae 5 Ephemeridae 8 Perlodidae 7
Ametropodidae,  Siphlonuridae 7 Ephydridae, Empididae 6 Phryganeidae 5
Ancylus 8 Erpobdellidae 3 Physidae 3
Aphelocheiridae 7 Gammaridae Pontogammaridae, Crangonyctidae 6 Piscicolidae 6
Argyroneta 3 Gerridae 3 Planorbidae 4
Asellidae 2 Glossiphonidae 3 Platycnemidae 6
Athericidae 8 Glossosomatidae 10 Pleidae 5
Baetidae 6 Goeridae 9 Polycentropodidae, Psychomyidae, Ecnomidae 6
Bithynia tentaculata 6 Gomphidae 7 Polychaeta 5
Blephariceridae 10 Gyrinidae 5 Polymitarcidae 7
Caenidae 7 Heptagenidae 9 Potamanthidae 7
Calopterygidae 8 Hirudinidae 3 Potamopyrgus antipodarum 5
Cambaridae Astacidae 5 Hydrachnidia 3 Ptychopteridae 3
Capniidae  Leuctridae 8 Hydrometridae 3 Ryacophilidae 7
Ceratopogonidae 4 Hydropsychidae 5 Sciomyzidae, Muscidae, Dolichopodidae 4
Chaoboridae 2 Hydroptilidae 6 Sialis 3
Chironomidae 2 Isonychiidae, Oligoneuriidae 8 Simuliidae 6
Chloroperlidae 8 Lepidoptera 2 Sphaeriidae 5
Coenagrionidae 6 Lepidostomatidae, Brachycentridae, Beraeidae, Sericostomatidae, Odontoceridae 6 Stratiomyidae 3
Coleoptera imago 3 Leptoceridae 10 Syrphidae 1
Coleoptera larvae 3 Leptophlebiidae 7 Tabanidae 3
Cordulegasteridae 9 Lestidae 5 Taeniopterygidae, Nemouridae 8
Corduliidae, Libellulidae 5 Limnephilidae   7 Theodoxus 6
Corixidae 5 Lymnaeidae 3 Tipulidae, Limoniidae 5
Corophiidae 6 Molannidae 10 Tricladida 3
Culicidae 2 Naucoridae 5 Unionidae 7
Cyrenidae 4 Nepidae 5 Valvata 4
Dixidae 3 Notonectidae 5 Veliidae, Mesoveliidae, Hebridae 5
Dreissenidae 7 Oligochaeta 1 Viviparus 6

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Table 2. Preliminary ranges of NoASPT values for particular ecological states in different biocoenotic types of the watercourses.

stan ekologiczny

typ biocenotyczny

I II III IV V
III ? >5,00 ,99-4,30 4,29-3,80 <3,80
IV ? >5,50 5,49-4,10 4,09-3,50 <3,50
VI ? >5,50 5,49-5,20 5,19-4,00 <4,00

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© PK, kwantyzacja, 2014.