An in situ test to explore the responses of Scenedesmus acutus and Lepocinclis acus as indicators of the changes in water quality in lowland streams
This bioassay was designed with the aim of exploring the responses of two wild planktonic microalgae exposed in situ (72. h) as indicators of the changes in water quality. Monocultures of both strains within dialysis membrane bags were placed at two sites in a small lowland stream. Site 1 is located...
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todo:paper_01476513_v77_n_p71_Bauer2023-10-03T15:00:47Z An in situ test to explore the responses of Scenedesmus acutus and Lepocinclis acus as indicators of the changes in water quality in lowland streams Bauer, D.E. Conforti, V. Ruiz, L. Gómez, N. In situ bioassay Lepocinclis acus Monitoring Scenedesmus acutus Water quality industrial chemical bioassay bioindicator horticulture in situ test lowland environment microalga monitoring monoculture plankton population decline risk assessment streamwater water quality algal growth article bioassay cell shape cell volume controlled study cost benefit analysis dialysis membrane ecosystem environmental exposure environmental monitoring fungal cell horticulture land use Lipocinclis acus microalga monoculture nonhuman population growth risk assessment Scenedesmus scenedesmus acutus sensitivity analysis stream (river) suburban area urban area water quality bioassay chemistry drug effect environmental monitoring methodology river water pollutant water quality algae Lepocinclis acus Scenedesmus acutus Biological Assay Environmental Monitoring Microalgae Rivers Scenedesmus Water Pollutants Water Quality This bioassay was designed with the aim of exploring the responses of two wild planktonic microalgae exposed in situ (72. h) as indicators of the changes in water quality. Monocultures of both strains within dialysis membrane bags were placed at two sites in a small lowland stream. Site 1 is located at a suburban area with low horticultural activity and Site 2 is impacted by toxic industrial discharges and urban land use.There was a decrease in population growth of both species at Site 2 compared with Site 1. The comparison of the algae exposed in situ with the normal specimens cultured at the laboratory indicated a significant increase in the cellular volume for both species at both sites. Abnormal shape was recorded at both sites, the percentage being significantly greater for Scenedesmus acutus at Site 2. Significant changes in pyrenoids size were observed in S. acutus and in the percentage of fragmented nuclei in Lepocinclis acus. Also in the latter abnormal paramylon grains were observed. These responses were accentuated at Site 2.This bioassay was sensitive, short term, low cost, and therefore is a suitable tool to contribute with the monitoring and ecological risk assessment of lowland streams. © 2011 Elsevier Inc. Fil:Conforti, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ruiz, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01476513_v77_n_p71_Bauer |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
In situ bioassay Lepocinclis acus Monitoring Scenedesmus acutus Water quality industrial chemical bioassay bioindicator horticulture in situ test lowland environment microalga monitoring monoculture plankton population decline risk assessment streamwater water quality algal growth article bioassay cell shape cell volume controlled study cost benefit analysis dialysis membrane ecosystem environmental exposure environmental monitoring fungal cell horticulture land use Lipocinclis acus microalga monoculture nonhuman population growth risk assessment Scenedesmus scenedesmus acutus sensitivity analysis stream (river) suburban area urban area water quality bioassay chemistry drug effect environmental monitoring methodology river water pollutant water quality algae Lepocinclis acus Scenedesmus acutus Biological Assay Environmental Monitoring Microalgae Rivers Scenedesmus Water Pollutants Water Quality |
| spellingShingle |
In situ bioassay Lepocinclis acus Monitoring Scenedesmus acutus Water quality industrial chemical bioassay bioindicator horticulture in situ test lowland environment microalga monitoring monoculture plankton population decline risk assessment streamwater water quality algal growth article bioassay cell shape cell volume controlled study cost benefit analysis dialysis membrane ecosystem environmental exposure environmental monitoring fungal cell horticulture land use Lipocinclis acus microalga monoculture nonhuman population growth risk assessment Scenedesmus scenedesmus acutus sensitivity analysis stream (river) suburban area urban area water quality bioassay chemistry drug effect environmental monitoring methodology river water pollutant water quality algae Lepocinclis acus Scenedesmus acutus Biological Assay Environmental Monitoring Microalgae Rivers Scenedesmus Water Pollutants Water Quality Bauer, D.E. Conforti, V. Ruiz, L. Gómez, N. An in situ test to explore the responses of Scenedesmus acutus and Lepocinclis acus as indicators of the changes in water quality in lowland streams |
| topic_facet |
In situ bioassay Lepocinclis acus Monitoring Scenedesmus acutus Water quality industrial chemical bioassay bioindicator horticulture in situ test lowland environment microalga monitoring monoculture plankton population decline risk assessment streamwater water quality algal growth article bioassay cell shape cell volume controlled study cost benefit analysis dialysis membrane ecosystem environmental exposure environmental monitoring fungal cell horticulture land use Lipocinclis acus microalga monoculture nonhuman population growth risk assessment Scenedesmus scenedesmus acutus sensitivity analysis stream (river) suburban area urban area water quality bioassay chemistry drug effect environmental monitoring methodology river water pollutant water quality algae Lepocinclis acus Scenedesmus acutus Biological Assay Environmental Monitoring Microalgae Rivers Scenedesmus Water Pollutants Water Quality |
| description |
This bioassay was designed with the aim of exploring the responses of two wild planktonic microalgae exposed in situ (72. h) as indicators of the changes in water quality. Monocultures of both strains within dialysis membrane bags were placed at two sites in a small lowland stream. Site 1 is located at a suburban area with low horticultural activity and Site 2 is impacted by toxic industrial discharges and urban land use.There was a decrease in population growth of both species at Site 2 compared with Site 1. The comparison of the algae exposed in situ with the normal specimens cultured at the laboratory indicated a significant increase in the cellular volume for both species at both sites. Abnormal shape was recorded at both sites, the percentage being significantly greater for Scenedesmus acutus at Site 2. Significant changes in pyrenoids size were observed in S. acutus and in the percentage of fragmented nuclei in Lepocinclis acus. Also in the latter abnormal paramylon grains were observed. These responses were accentuated at Site 2.This bioassay was sensitive, short term, low cost, and therefore is a suitable tool to contribute with the monitoring and ecological risk assessment of lowland streams. © 2011 Elsevier Inc. |
| format |
JOUR |
| author |
Bauer, D.E. Conforti, V. Ruiz, L. Gómez, N. |
| author_facet |
Bauer, D.E. Conforti, V. Ruiz, L. Gómez, N. |
| author_sort |
Bauer, D.E. |
| title |
An in situ test to explore the responses of Scenedesmus acutus and Lepocinclis acus as indicators of the changes in water quality in lowland streams |
| title_short |
An in situ test to explore the responses of Scenedesmus acutus and Lepocinclis acus as indicators of the changes in water quality in lowland streams |
| title_full |
An in situ test to explore the responses of Scenedesmus acutus and Lepocinclis acus as indicators of the changes in water quality in lowland streams |
| title_fullStr |
An in situ test to explore the responses of Scenedesmus acutus and Lepocinclis acus as indicators of the changes in water quality in lowland streams |
| title_full_unstemmed |
An in situ test to explore the responses of Scenedesmus acutus and Lepocinclis acus as indicators of the changes in water quality in lowland streams |
| title_sort |
in situ test to explore the responses of scenedesmus acutus and lepocinclis acus as indicators of the changes in water quality in lowland streams |
| url |
http://hdl.handle.net/20.500.12110/paper_01476513_v77_n_p71_Bauer |
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