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Table 2 Detritus-based assemblages in the six pools studied, ordered by increasing salinity

From: Detritus-based assemblage responses under salinity stress conditions in a disused aquatic artificial ecosystem

POOL P5 P1 P2 P3 P4 P6
Taxon FrN FrB FrN FrB FrN FrB FrN FrB FrN FrB FrN FrB
Chironomus sp. (larvae) 0.167 0.014 0.239 0.014 0.536 0.371 0.757 0.180 0.928 0.586 0.994 0.980
Gammarus aequicauda 0 0 0.268 0.023 0.034 0.008 0 0 0 0 0 0
Perinereis culltrifera 0 0 0.058 0.062 0.003 0.010 0 0 0 0 0 0
Nereis diversicolor 0 0 0.262 0.490 0.034 0.175 0 0 0 0 0 0
Hydrobia acuta (complex) 0 0 0.087 0.072 0.140 0.312 0.216 0.728 0.003 0.028 0 0
Cerastoderma glaucum 0 0 0.003 0.013 0.003 0.042 0.004 0.070 0.005 0.225 0 0
(other) Coleoptera (larvae) 0.014 0.002 0.026 0.002 0 0 0 0 0 0 0 0
Cerithium vulgatum 0 0 0.052 0.324 0 0 0 0 0 0 0 0
Gordiidae 0 0 0.003 0 0 0 0 0 0 0 0 0
Spio decorates 0 0 0 0 0.007 0.004 0 0 0 0 0 0
(other) Diptera (larvae) 0.007 0.001 0 0 0.003 0.001 0 0 0 0 0 0
Monocorophium insidiosum 0 0 0 0 0.225 0.063 0 0 0 0 0 0
Idotea balthica 0 0 0 0 0.014 0.012 0 0 0 0 0 0
Haliplus sp. 0.530 0.182 0 0 0 0 0.023 0.022 0.064 0.162 0.004 0.015
Micronecta sp 0.035 0.008 0 0 0 0 0 0 0 0 0 0
Anisoptera (nymphae) 0.220 0.705 0 0 0 0 0 0 0 0 0 0
Acilius sp (larvae) 0.021 0.086 0 0 0 0 0 0 0 0 0 0
Hydrophilus sp 0.007 0.002 0 0 0 0 0 0 0 0 0.002 0.005
Taxonomic units 8   9   10   4   4   3  
Abundance (total N ind) 287   343   293   518   643   519  
Biomass (grams, AFDW)   2.679   4.727   1.483   1.739   0.815   0.421
  1. Abundance frequency (frN) and biomass frequency (frB) for each taxon, number of taxonomic units, total number of macrozoobenthic individuals (N) and total macrozoobenthic biomass (B) are reported.