Phycoperiphyton (Algae) as Indicators of Water Quality

Collins, Gary B.; Weber, Cornelius I.

doi:10.2307/3225682

Cited by 53 publications

(30 citation statements)

References 14 publications

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“…The AFDM represents the combined mass of heterotrophic and autotrophic biomass (and organic detritus), and Chl a reflects the autotrophic component (Biggs and Kilroy 2000). Biofilm is considered to be more heterotrophic for values higher than 400 (Collins and Weber 1978). Another aliquot was fixed with 4% formalin and used for species identification and density calculations.…”

Section: Experimental Design and Laboratory Methodsmentioning

confidence: 99%

Succession of algal communities in headwaters: a comparison of pine afforested and natural grassland streams

Cibils‐Martina

Príncipe

Márquez

et al. 2017

Ecological Research

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We evaluated changes in the succession process in benthic algal communities of an afforested stream by comparing them with those in a grassland stream through analysis of temporal changes in composition, structure and functional traits in a 3-month experiment. We hypothesized that sunlight intensity reduction as a result of streamside implanted tree shading reduces the succession rate and community physiognomic complexity. We selected two streams with different riparian cover (grassland and pine afforestation) for installation of unglazed tiles as artificial substrates. The tiles were collected from each stream after 23, 45 and 73 days of exposure. Afforestation produced changes in algal succession, with lower biomass, lower diversity at the beginning of the experiment, and an increase in the proportion of small, low-profile, tolerant, unicellular and stalked algae, coinciding with the predominance of Achnanthidium. However, the grassland stream contained a higher proportion of intermediate-size algae, as well as a larger proportion of high-profile algae, coinciding with the expected results. In the afforested stream, succession proceeded toward the dominance of low-profile species, that were tolerant of low-light conditions. However, in grassland streams with higher sunlight availability, high-profile algae prevailed without the displacement of tolerant forms. Overall, our results indicate that algal communities in afforested stream remain structurally simpler.

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Section: Experimental Design and Laboratory Methodsmentioning

confidence: 99%

Succession of algal communities in headwaters: a comparison of pine afforested and natural grassland streams

Cibils‐Martina

Príncipe

Márquez

et al. 2017

Ecological Research

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“…Therefore, AI values of 50-100 are characteristic of non-polluted conditions with little organic detritus (where autotrophy dominates). Values greater than 400 indicate communities affected by organic pollution, where heterotrophy dominates (Collins & Weber 1978).…”

Section: Periphytonmentioning

confidence: 99%

Biomonitoring of organic pollution using periphyton, South Branch, Canterbury, New Zealand

Biggs¹

1989

New Zealand Journal of Marine and Freshwater Research

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The use of periphyton to monitor the effects of organic pollution in shallow, swift New Zealand rivers was tested using a slaughterhouse effluent discharge to the South Branch, Canterbury. Eight 1 -week long artificial substrate accrual periods were used. A range of taxonomic and biomass determinands were analysed for during the first 2 periods. However, only chlorophyll a, ash-free dry weight (AFDW) and their derivative the Autotrophic Index (AI), were used for subsequent monitoring as they provided the most efficient means of discriminating the effluent impacts. Intensive chemical monitoring during these first 2 sampling periods identified a highly concentrated organic waste with high daily variability (x total Kjeldahl nitrogen = 5.04 and 1.90 mg 1 -1 , %CV = 74 and 79). Effluent volumes were slowly reduced over a 4-month period. This resulted in reductions in the AI (maximum of 4377 down to 191) of downstream communities and demonstrated the benefit of effluent diversion. The community also responded to lowlevel organic contamination at the control site as shown by the AI. There was a highly significant correlation (r=0.926) between biochemical oxygen demand and the AI. There were no significant differences in the AI between control and impact sites for 2 sampling periods after the effluent had been diverted from the river. It is concluded that periphyton have the potential to provide good data on the biological effects of organic discharges to shallow, swift New Zealand rivers to complement water quality monitoring data.

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“…(1999 (1,42 -28,08 ug/cm 2 , 0,2 -28 ug/cm 2 et 4,63 -24,4 ug/cm 2 , respectivement). Le périphyton des eaux de surface ayant un ratio PSO/Chl a compris entre 50 et 100 est généralement dominé par les algues (COLLINS et WEBER, 1978). Les ratios PSO/Chl a élevés (> 250) de la rivière Boyer indiquent que le périphyton est dominé par les organismes hétérotrophes et/ou riche en matières organiques détritiques (COLLINS et WEBER, 1978).…”

Section: -Discussionunclassified

“…Le périphyton des eaux de surface ayant un ratio PSO/Chl a compris entre 50 et 100 est généralement dominé par les algues (COLLINS et WEBER, 1978). Les ratios PSO/Chl a élevés (> 250) de la rivière Boyer indiquent que le périphyton est dominé par les organismes hétérotrophes et/ou riche en matières organiques détritiques (COLLINS et WEBER, 1978). La présence de fortes biomasses suggère que les apports d'éléments nutritifs sont un facteur de contrôle important de la croissance algale.…”

Section: -Discussionunclassified

Effet du débit sur la dynamique temporelle des algues périphytiques dans une rivière influencée par les activités agricoles

Lavoie¹,

Warwick²,

Reinhard³

et al. 2005

rseau

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Le périphyton de la rivière Boyer Nord, une rivière affectée par les activités agricoles dans le sud du Québec (Canada), a été échantillonné toutes les deux semaines de la mi-mai à la fin septembre 1999 afin d'évaluer son évolution temporelle et d'identifier les variables potentielles qui le contrôlent. Les résultats montrent la grande variabilité temporelle de la biomasse périphytique (poids sec organique et chlorophylle a) et de la structure de la communauté de diatomées. La communauté d'algues benthiques dans la rivière Boyer était principalement composée de diatomées (Nitzschia, Cocconeis, Cymbella, Cyclotella), d'algues vertes (Scenedesmus, Pediastrum, Cosmarium, Closterium) et de cyanobactéries (Phormidium, Oscillatoria, Merismopedia). La pointe de débit observée durant la semaine précédant l'échantillonnage était fortement corrélée à plusieurs variables physico-chimiques (N-total, NH3-N, NO3-N, P-total, turbidité) et était le plus fortement corrélée aux changements temporels de la biomasse. La biomasse (chlorophylle a et poids sec organique) était négativement corrélée au phosphore total, ce qui reflète la relation avec le débit. Les changements temporels dans la composition spécifique des diatomées étaient régis par différentes variables physico-chimiques, selon les limites de tolérances et la valence écologique des espèces. Les algues périphytiques de cette communauté ont réagi aux variations de l'environnement à l'intérieur d'une période de 2 semaines puisque des changements majeurs dans la structure de l'assemblage de diatomées ont été observés lors de chaque échantillonnage. Ces observations montrent la forte variabilité de la biomasse et de la structure de la communauté périphytique dans les rivières enrichies par les éléments nutritifs et souligne l'influence majeure du débit dans ce type d'environnement.Periphyton in an agriculturally enriched river (Boyer River, Québec, Canada) was sampled from mid-May to the end of September 1999 to evaluate the temporal succession of periphyton and to identify potential controlling variables. The river is located on the south shore of the St. Lawrence River and discharges into it approximately 30 kilometres downstream (east) of Québec City. Land-use in the Boyer River watershed is 60% farmland and 40% forests. The site was chosen for its intense farming, accessibility and proximity to an automatic sampling station for water quality operated by the Québec Ministry of the Environment that continuously recorded pH, temperature, dissolved oxygen and discharge. Event water samples were collected for nutrients, turbidity, conductivity and suspended solids according to discharge. Periphyton growth was scraped every two weeks from rocks over a 10 meter reach, between mid-May and the end of September using a template, blade and toothbrush. Samples for chlorophyll a (Chl a) and ash-free-dry-weight (AFDW) were filtered on to Whatman GF/C glass fiber filters the same day and additional samples were preserved with paraformaldehyde-glutaraldehyde for taxonomic analysis. Chl a...

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Phycoperiphyton (Algae) as Indicators of Water Quality

Cited by 53 publications

References 14 publications

Succession of algal communities in headwaters: a comparison of pine afforested and natural grassland streams

Succession of algal communities in headwaters: a comparison of pine afforested and natural grassland streams

Biomonitoring of organic pollution using periphyton, South Branch, Canterbury, New Zealand

Effet du débit sur la dynamique temporelle des algues périphytiques dans une rivière influencée par les activités agricoles

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