Effect of industrial discharges on the ecology of phytoplankton production in the river Periyar (India)

Joy, CS; Balakrishnan, K. P.; Joseph, Ammini

doi:10.1016/0043-1354(90)90037-7

Cited by 24 publications

(17 citation statements)

References 3 publications

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“…The industrial revolution initiated during 1940s and has intensified after 1970 leading to Long term variation in nitrate, phosphate, chlorophyll 'a' and organic carbon in the Z1 during premonsoon season (Sources: Qasim et al 1969;Reddy and Sankaranarayan 1972;Qasim 1974;Sumithra et al 1974;Joseph and Kunjukrishnapillai 1975;Remani et al 1980;Gopinathan et al 1984;Saraladevi 1986;Joy et al 1990;Nair et al 1990;Aravindakshan et al 1992;Sheeba 2000;Balachandran 2001;Akram 2002;Qasim 2003;Selvaraj et al 2003;Jyothibabu et al 2006;Martin et al 2008; 2005-Present study) Table 3 Long-term changes (pre-monsoon) in the macrobenthos distribution during pre-monsoon in Z1 (sources : Saraladevi 1986;Sheeba 2000Sheeba , 2005 (Balachandran et al 2002(Balachandran et al , 2003Madhu et al 2007). The concentrations of nutrients and chlorophyll a are relatively high in the Cochin estuary, when compared to other estuaries such as Hudson (Clerk et al 1992), the San Francisco Bay (Flegal et al 1991), Schedt (Zwolsman 1994), Girode estuary (Irigoien and Castel 1997), Baixada Santista (Braga et al 2000), and Pearl estuary (Huang et al 2003).…”

Section: Discussionmentioning

confidence: 98%

Eutrophication induced changes in benthic community structure of a flow-restricted tropical estuary (Cochin backwaters), India

Martin

Nisha

Balachandran

et al. 2010

Environ Monit Assess

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The influence of anthropogenic loading on the distribution of soft bottom benthic organisms of a tropical estuary (Cochin backwaters) was examined. The industrial activities were found to be high in the northern and central part of the estuary, where dissolved inorganic nitrogen (DIN > 210 μM) and phosphorus (DIP > 6.5 μM) have caused high abundance of chlorophyll a (up to 73 mg m(-3)) and accumulation of organic carbon in sediments (up to 5%). Principal component analysis distinguished three zones in the estuary. The central zone (Z1) was characterized by organic enrichment, low species diversity, and increased number of pollution tolerant species. Long-term deterioration of the estuary is indicated by an increase in the nutrients and chlorophyll a levels by sixfold during the last few decades. Flow restrictions in the lower estuary have lead to a fourfold increase in sediment organic carbon over the period of three decades. The reduced benthic diversity followed by an invasion of opportunistic polychaetes (Capitella capitata), are indicative of a stress in the estuary.

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Section: Discussionmentioning

confidence: 98%

Eutrophication induced changes in benthic community structure of a flow-restricted tropical estuary (Cochin backwaters), India

Martin

Nisha

Balachandran

et al. 2010

Environ Monit Assess

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“…Nous avons vu que l'effluent provenant du lavage de phosphate brut de l'industrie minière de Kpémé n'est pas chargé en matière organique comme l'ont montré les valeurs de la DCO et de la DBO 5 . Le premier problème de cet effluent est sa concentration très élevée en MES dont plus de 90 % sont décantables.…”

Section: Discussionunclassified

Caractérisation de deux effluents industriels au Togo :étude d’impact sur l’environnement

Bawa¹,

Djanéyé-Boundjou²,

Boukari³

2010

Afrique Science: Revue Internationale Des Sciences Et Technologie

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RésuméCette étude a eu pour but de montrer la pollution du milieu environnemental apportée par deux effluents industriels au Togo. Les résultats montrent que l'effluent du lavage de phosphate de Kpémé est très chargé en matières en suspension décantables (plus de 90% des matières en suspension). Ces matières en suspension (MES) sont essentiellement argileuses et contiennent des éléments métalliques. Environ 17,5 μg.g On comprend que le manque de législation, ou la non application des réglementations en vigueur en matière de gestion des eaux usées industrielles expose les milieux aquatiques et terrestres à toute forme de pollution dont les conséquences, à court ou à long terme, finiront par atteindre l'homme. Mots-clés :Effluents industriels, paramètres de pollution, cadmium, mercure, impact environnemental. Abstract Characterization of two industrial effluents in Togo : environment impact studyEnvironment pollution due to two industrial effluents has been investigated. Results show that effluent derive from the factory of the treatment of Kpémé phosphate ore was ).

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“…Syrett (1981) reported that nitrate and ammonia stimulate the growth of almost all chlorophyll-containing algae. However, in the present study, the recorded increase of nitrate and ammonia concentrations in alum-treated ponds (Table 3) with synchronous decrease in phytoplankton counts (Table 4) might be attributed to accumulation of nitrate and ammonia in the pond as a result of death of algae, which consume nitrate and ammonia for their nutrition (Boyd 1998;Joy et al 1990). Although ammonia concentrations in alum-treated ponds were increased with respect to the corresponding control (Table 3), the recorded values of ammonia were still in the safe range recommended by the European Inland Fisheries Advisory Commission (EIFAC 1973).…”

Section: Discussionmentioning

confidence: 51%

Influence of alum on cyanobacterial blooms and water quality of earthen fish ponds

Dawah

Soliman

Abomohra

et al. 2015

Environ Sci Pollut Res

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Eruption of blue-green algal blooms occurs frequently in eutrophic lakes and fish ponds, with associated unpleasant odor and horrid scums. In the present study, we conducted a pre-test experiment in 3 m(3) outdoor concrete ponds to determine the optimum concentration of aluminum sulfate (alum) required for reduction of the cyanobacterial blooms without negative effect on fish growth. As a consequence, 10 mg L(-1) alum was named as the optimum concentration that was applied in 1000 m(3) earthen fish ponds. Obtained results showed that Secchi disc values significantly increased from 10 to 24 cm after 14 days of alum application. Alum-treated ponds showed a reduction in total phytoplankton counts by 94 and 96% compared to the corresponding controls after 10 and 14 days, respectively. Abundance of blue-green algae in the treated ponds was decreased by 98% compared to the corresponding control after 14 days of alum application. Consequently, dissolved oxygen, pH, total phosphorus, orthophosphate, and chlorophyll "a" content declined significantly. Our study revealed that using 10 mg L(-1) of alum is an effective way to control cyanobacterial blooms in eutrophic waters, especially in fish ponds, without negative effect in water quality.

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Effect of industrial discharges on the ecology of phytoplankton production in the river Periyar (India)

Cited by 24 publications

References 3 publications

Eutrophication induced changes in benthic community structure of a flow-restricted tropical estuary (Cochin backwaters), India

Eutrophication induced changes in benthic community structure of a flow-restricted tropical estuary (Cochin backwaters), India

Caractérisation de deux effluents industriels au Togo :étude d’impact sur l’environnement

Influence of alum on cyanobacterial blooms and water quality of earthen fish ponds

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