Effects of multiple stressors on hyporheic invertebrates in a lotic system

Nelson, S. Mark; Roline, Richard A.

doi:10.1016/s1470-160x(03)00012-8

Cited by 22 publications

(13 citation statements)

References 26 publications

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“…The abundance of mayflies particularly, Baetis and Siphlonurus, Coleoptera (Gyrinus, Gerris lacustris) and the near restriction of Trichoptera (Hydropsyche and Stenophylax) to site I is an indication that this site is relatively free from gross pollution. Related studies conducted in similar freshwater bodies in Nigeria (Umeozor 1995(Umeozor , 1996Edokpayi et al 2000;Edema et al 2002) and elsewhere (Miserendino and Pizzolon 2000;Walsh et al 2002;Rueda et al 2002;Nelson and Roline 2003) have associated the presence of these organisms in a site to clean water conditions. These species are very sensitive to reductions in dissolved oxygen and are not found in areas where oxygen levels are consistently low.…”

Section: Discussionmentioning

confidence: 94%

“…These activities cause diversity of stresses to aquatic systems and may affect biota at different spatial and temporal scales. Some identified stressors include discharge of untreated animal wastes from slaughter houses, livestock and fish farms (Mathooko 2001;Ruggiero et al 2003;Kirkague et al 2004), untreated sewage (Rueda et al 2002), wood wastes (Arimoro and Osakwe 2006), Storm water and laundering along urban tracts of stream (Walsh et al, 2002); old mine effluents (Nelson and Roline 2003).…”

Section: Introductionmentioning

confidence: 99%

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Response of macroinvertebrate communities to abattoir wastes and other anthropogenic activities in a municipal stream in the Niger Delta, Nigeria

Arimoro

Ikomi

2007

Environmentalist

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Impacts of co-occurring stressors (organic wastes and various human activities) on macroinvertebrate assemblages and environmental variables were investigated in a municipal stream, River Orogodo in southern Nigeria between the months of June 2004 and July 2005. Four sampling sites, each 25 m long were selected along 15 km stretch of the stream. There was a marked difference in the taxonomic composition of macroinvertebrates in the reference sites (I and IV) and those of the perturbed sites (II and III). A combined total of 78 benthic macroinvertebrate taxa were collected from the four sites of the river. The abundance and community structure patterns showed strong evidence of impact arising from the abattoir waste discharge such that the comparison of abundance values demonstrated high significance between the reference sites and the perturbed sites. Pearson correlation coefficient analysis indicated temporal trends in macroinvertebrate density and community composition. This was related to changes in environmental characteristics of the river especially BOD 5 and amount of nutrients. These factors produced spatial and temporal heterogeneity and exerted major influence on the benthic communities. The preponderance of Oligochaetes and diptera and deterioration in water quality at sites II and III are attributed to the intensity of human activities at these sites. Shannon-wiener diversity and evenness were significantly higher (P \ 0.05) at the reference sites I and IV. Results illustrate the need for careful consideration of the water quality and indicator organisms in restoration and remediation programmes.

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Response of macroinvertebrate communities to abattoir wastes and other anthropogenic activities in a municipal stream in the Niger Delta, Nigeria

Arimoro

Ikomi

2007

Environmentalist

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“…Numerous studies demonstrate that mayfly community structure effectively reflects the environmental situation of water courses (Gupta and Michael 1992;Bauernfeind and Moog 2000;Medina and Vallania 2001;Ogbogu and Akinya 2001;Baptista et al 2001;Rueda et al 2002;Nelson and Roline 2003). In some cases, low mayfly diversity is the result of extreme ecological conditions in the natural environment (Aagaar et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Mayfly (Insecta: Ephemeroptera) community structure as an indicator of the ecological status of a stream in the Niger Delta area of Nigeria

Arimoro

Müller

2009

Environ Monit Assess

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Ephemeroptera is an important group of insects used in the bioassessment and monitoring of freshwater bodies worldwide because of their relative abundance in a wide variety of substrates and their increasing chances of detecting pollution impacts. In this study, their faunistic composition and spatiotemporal variations in density and diversity in River Orogodo (Southern Nigeria) was investigated at five ecologically distinct stations over a 12-month period. The mayfly nymph community responses to environmental variables were evaluated by means of biological measures and multivariate analysis (redundancy analysis [RDA]). Thirteen morphologically distinct taxa belonging to six families were identified. The dominant taxa were Afrobaetodes pusillus (23.1%), Baetis sp. (13.7%), and Caenis cibaria (11.4%). The density of Ephemeroptera differed significantly (p < 0.05) both in space and time. Diversity was influenced by substrate heterogeneity which in turn was influenced by catchment processes such as flooding and anthropogenic activities especially abattoir effluent. Based on the RDA ordination and relative abundance data, Baetis sp. dominated at impacted stations while a more equitable distribution of species were observed in less disturbed sites. Water velocity, canopy cover, nature of bottom sediments, and the amount of dissolved oxygen also accounted for the variations in Ephemeroptera densities at the different stations. Shannon diversity, taxa richness, and evenness were lowest in station 3 (the abattoir discharge site).

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“…Many monitoring programs utilise the EPT (Ephemeroptera, Plecoptera, Trichoptera) index, which is widely used for monitoring efforts. Several studies in the past revealed that mayfly community structure successfully reflected the environmental conditions in terms of water quality and habitat selection (Gupta and Michael, 1992;Bauernfeind and Moog, 2000;Medina and Vallania, 2001;Ogbogu and Akinya, 2001;Baptista et al, 2001;Rueda et al, 2002;Nelson and Roline, 2003;Buss and Salles, 2007;Arimoro and Muller, 2009;Pond, 2010;Savić et al, 2010;2011;Kumar et al, 2012) and mayflies are widely used for monitoring efforts. As such, the importance of mayfly communities as biological indicators of organic pollution in the riverine basins of the KMTR was evaluated and the impact of riparian land use in structuring larval ephemeropteran communities was assessed.…”

Section: Introductionmentioning

confidence: 99%

Impact of riparian land-use patterns on Ephemeroptera community structure in river basins of the southern Western Ghats, India

Selvakumar

Sivaramakrishnan²,

Janarthanan

et al. 2014

Knowl. Managt. Aquatic Ecosyst.

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Key-words: Ephemeroptera, riparian land use, bioindicators, KMTR, Western GhatsThis study analysed the impact of riparian land use in structuring the larval ephemeropteran communities from 25 sites in streams and rivers of Kalakad-Mundanthurai Tiger Reserve (KMTR) of the southern end of the Western Ghats, India. A total of twenty-eight species belonging to twentyfour genera of six families were collected across all the sites. Baetidae and Leptophlebiidae were the most numerous and ubiquitous families, comprising eight genera in each family and eleven and nine species, respectively. The physico-chemical parameters and species richness and abundance of mayflies varied across streams and rivers with different riparian land-use types. Species distribution was influenced by the environmental gradients. Canonical Correspondence Analysis revealed a clear separation of the mayfly assemblages along water quality and riparian landuse gradients. The results of this study suggest that Ephemeroptera taxa can be potentially used as sensitive indicators of riparian land use in lotic ecosystems. RÉSUMÉImpact des modes d'utilisation des terres riveraines sur la structure de la communauté d'éphéméroptères dans les bassins hydrographiques des Ghâts occidentaux du sud, Inde

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Effects of multiple stressors on hyporheic invertebrates in a lotic system

Cited by 22 publications

References 26 publications

Response of macroinvertebrate communities to abattoir wastes and other anthropogenic activities in a municipal stream in the Niger Delta, Nigeria

Response of macroinvertebrate communities to abattoir wastes and other anthropogenic activities in a municipal stream in the Niger Delta, Nigeria

Mayfly (Insecta: Ephemeroptera) community structure as an indicator of the ecological status of a stream in the Niger Delta area of Nigeria

Impact of riparian land-use patterns on Ephemeroptera community structure in river basins of the southern Western Ghats, India

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