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Benthic diatom and macroinvertebrate assemblages, a key for evaluation of river health and pollution in the Shahrood River, Iran
- Source :
- Limnology. 17:95-109
- Publication Year :
- 2015
- Publisher :
- Springer Science and Business Media LLC, 2015.
-
Abstract
- The pre sent study analyzed the relationships of two different biological assemblages (diatom and macroinvertebrate) when they are used to characterize a set of stations (from reference stations to impacted stations) within the Shahrood River. In particular, we examined the issue of concordance among these assemblages and the physicochemical parameters detected, using both multivariate and multimetric methods. In addition, the trophic diatom index and Hilsenhoff family-level biotic index for macroinvertebrate assemblages were used to evaluate the ecological status of the Shahrood River. Diatom and macroinvertebrate assemblages in the Shahrood River differed significantly between reference and impacted stations. ANOSIM showed a significant difference in the composition and abundance of diatoms and macroinvertebrates among reference, influence and impact stations, especially between reference and impact stations. Results of CCA ordination showed that benthic diatoms and macroinvertebrate assemblages were mainly affected by DO, TSS, NO3 −, PO4 3− concentrations and heavy metals such as Zn and Cd. Biotic indices for the Shahrood River suggested a water quality category of “fair” with fairly substantial organic pollution for the impacted stations. Finally, our results suggest that an appropriate management and restoration policy needs to be implemented for the Shahrood basin.
- Subjects :
- 0106 biological sciences
Pollution
Hydrology
Ecology
biology
010604 marine biology & hydrobiology
media_common.quotation_subject
010501 environmental sciences
Aquatic Science
biology.organism_classification
01 natural sciences
Diatom
Benthic zone
Abundance (ecology)
Environmental science
Ordination
Water quality
0105 earth and related environmental sciences
Water Science and Technology
Trophic level
media_common
Biotic index
Subjects
Details
- ISSN :
- 1439863X and 14398621
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Limnology
- Accession number :
- edsair.doi...........84fb0d6134242737cbb76ae67cb54256
- Full Text :
- https://doi.org/10.1007/s10201-015-0464-5