Contribution to the knowledge on the distribution of recent free-living freshwater ostracods (Podocopida, Ostracoda, Crustacea) in Slovenia

The invertebrate indices for assessing water quality have not been widely developed in tropical regions where invertebrate diversity is generally high and severe water quality degradation is ongoing. We compared the applicability of six existing invertebrate indices using the dataset from 23 Indonesian streams and developed a new index by modifying an existing one using Threshold Indicator Taxa Analysis (TITAN). Analyses using general linear models (GLMs) revealed that among the six existing indices, the biological monitoring working party (BMWP)-based scoring system for Thailand streams (BMWP THAI) exhibited the strongest negative relationship with phosphate (PO4-P) concentration, a proxy for stream water quality. Based on the results of TITAN, five taxa were added to develop a modified invertebrate index, namely BMWP IDN, by assigning taxon scores in accordance with the responses to the water quality gradient. The relationship between the BMWP IDN and PO4-P concentration was found to be stronger than any of the existing invertebrate indices, indicating the superiority of the new index. Therefore, the extraction of uncovered sensitive taxa was important for modifying the existing index, and this study can contribute to improving the invertebrate index for assessing water quality of Indonesian streams.

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Redefinition of the genus Typhlocypris Vejdovský, 1882 (Ostracoda, Candonidae)

Namiotko

Danielopol

Meisch

et al. 2014

Crustac

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The taxonomy of the genus Vejdovský, 1882 is reviewed. New morphological information on (Vejdovský, 1882), the type species of the genus, is provided, and a new reference material is presented. The generic diagnosis is emended with details derived from the developmental trajectory of the valves, from the juvenile stage A-3 to the adult. Those criteria clearly differentiate from the related genus Kaufmann, 1900. As here redefined, is a phylogentic lineage of the subfamily Candoninae containing extant species presently living in aquatic subterranean habitats and fossil species recovered from non-marine Late Palaeogene to Neogene and Quaternary deposits in Europe and western Asia. The type species of is considered a metaspecies, taxonomically treated as (), which includes populations resembling the newly designated reference material. The homeomorphic triangular valve shape of the Candoninae is discussed. Careful examination of the valve morphology of combined with the analysis of limb traits helps to distinguish representatives of this genus from unrelated phylogenetic groups presenting similar triangularly shaped valves. It is emphasised that for a useful description of taxa both transmitted light and scanning electron microscopy are necessary.

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Contribution to the knowledge on the distribution of recent free-living freshwater ostracods (Podocopida, Ostracoda, Crustacea) in Slovenia

Cited by 5 publications

References 14 publications

The groundwater fauna of the Classical Karst: hydrogeological indicators and descriptors

The groundwater fauna of the Classical Karst: hydrogeological indicators and descriptors

Application and development of invertebrate indices for water quality assessment in Indonesian streams

Redefinition of the genus Typhlocypris Vejdovský, 1882 (Ostracoda, Candonidae)

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