Phytoplankton bioassays for evaluating toxicity of in situ sediment contaminants

Munawar, M.; Munawar, I. F.

doi:10.1007/bf00048650

Cited by 64 publications

(32 citation statements)

References 20 publications

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“…Recently, some in situ bioassays have been successfully developed with a great variety of organisms such as estuarine crustaceans (Baughman et al, 1989), periphyton (Lewis et al, 1993), phytoplankton (Munawar and Munawar, 1987), mussels (Salazar et al, 1995;Warren et al, 1995), amphipods (Crane et al, 1995), benthic invertebrates (Hare et al, 1994;Chappie and Burton, 1997), mysids (Clark et al, 1987), oligochaetes (Monson et al, 1995), and also cladocerans (Sasson-Brickson and Burton, 1991;Ireland et al, 1996;Ojala et al, 1995). SnyderConn (1993) conducted chronic bioassays in situ, but only with locally collected cladocerans.…”

Section: Introductionmentioning

confidence: 98%

Water-Column, Sediment, and in Situ Chronic Bioassays with Cladocerans

Pereira

Soares

Gonçalves

et al. 2000

Ecotoxicology and Environmental Safety

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In situ bioassays are becoming very popular for laboratory test validation and field extrapolation. Natural conditions, including environmental variables, affect the "behavior" of contaminants and, consequently, their toxicity. This work aimed to develop protocols for in situ chronic bioassays with cladocerans and to assess the ecological relevance of conventional protocols for laboratory testing (water-column and sediment). An aquatic system impacted with acid mine drainage was chosen for the study. At some stations that were contaminated with heavy metals, water-column bioassays did not reveal any toxicity, while sediment and, especially in situ bioassays, revealed a delay in reproduction and a reduction in fertility. Thus, both laboratory bioassays underestimated the actual toxicity of studied sites: sediment, besides being an important contaminant source, became significantly altered with sampling, transport, storage, and manipulation. Therefore, an extra caution is needed when interpreting laboratory results, since the extrapolation to natural systems could be a very problematic step.

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Section: Introductionmentioning

confidence: 98%

Water-Column, Sediment, and in Situ Chronic Bioassays with Cladocerans

Pereira

Soares

Gonçalves

et al. 2000

Ecotoxicology and Environmental Safety

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“…At the local level, however, and at what may be considered the most sensitive level in the food-web, Munawar & Munawar (1987) observed scarcity of very small size plankton (a1.2-2.0 pm) in the Niagara River, relative to Lake Ontario. Since there are many different contaminants in these waters, it is uncertain what contaminant or group of contaminants might have caused this response.…”

Section: Trace Metalsmentioning

confidence: 97%

The effects of land use and cultural development on the Lake Ontario ecosystem since 1750

Sly¹

1991

Hydrobiologia

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Lake Ontario is the lowest in the chain of live Great Lakes which form part of the boundary between Canada and the United States. Although European exploration began as early as 1615, it was not until the mid-18th Century that permanent settlement began in the Great Lakes basin. Construction of the Erie Canal which links Buffalo with New York via the Hudson River, and its branch to Oswego, strengthened ties between settlements around the lower Great Lakes (lakes Erie and Ontario) and rapidly growing populations along the Atlantic seaboard. The coming of railroads greatly expanded these ties, and provided a direct link between Canadian settlements and the port of Montreal. Over the past 200 years, successive waves of immigrants entered the region, particularly from Europe.Cultural development has resulted in a wide range of environmental impacts throughout the Great Lakes basin. Impacts have been particularly severe in Lake Ontario. Major changes in water quality and the structure of biological communities have resulted from forest clearance, agricultural expansion, intensive fishing, industrial and urban development, and lake level control. Introductions of exotic species, inputs of nutrient and toxic contaminants, and the effects of climatic variation and modification of microclimates have all interacted such that it is often impossible to establish singular cause and effect.

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“…[76] Thus, bioassays have been designed to establish the toxicity of effluents or sediments to organisms. Microalgae are one type of organism sensitive to different pollutants in toxicity bioassays, [77][78] possibly because of their high surface-to-volume ratio.…”

Section: Biosensorsmentioning

confidence: 99%

Hybrid Materials that Integrate Living Cells: Improved Eco‐Adaptation and Environmental Applications

Wang

Tang

2011

ChemSusChem

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Cell of Duty: The integration of living cells into hybrid materials enables the use of these cells in various new applications, under conditions that would normally be too harsh. Material scientists seek to develop materials‐based chemical strategies to allow the cells to survive such environments and be used in, for example, biosensors, bioreactors, and self‐powered devices. This Minireview provides an overview of artificial coatings for cell protection.

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Phytoplankton bioassays for evaluating toxicity of in situ sediment contaminants

Cited by 64 publications

References 20 publications

Water-Column, Sediment, and in Situ Chronic Bioassays with Cladocerans

Water-Column, Sediment, and in Situ Chronic Bioassays with Cladocerans

The effects of land use and cultural development on the Lake Ontario ecosystem since 1750

Hybrid Materials that Integrate Living Cells: Improved Eco‐Adaptation and Environmental Applications

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