Application of foraminifers in ecotoxicology: Retrospect, perspect and prospect

Nigam, R.; Saraswat, Rajeev; Panchang, Rajani

doi:10.1016/j.envint.2005.08.024

Cited by 78 publications

(27 citation statements)

References 59 publications

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“…Abnormal test morphology in benthic foraminifera are well known from the geological record [10] (Table 3). Here are some of the abnormalities noted in the study area (Plate.1)…”

Section: Foraminiferal Assemblagesmentioning

confidence: 99%

“…Storms, boating activities, dredging, and any other natural or anthropogenic activities that disturb sediments can mix mobile heavy metals from hypoxic pore waters in to the water column, where the heavy metals have greater potential to impact the local biota [18]. This, monitoring and assessment of the risks to coastal ecosystems associated with heavy metal pollution are highly complex problems that require interdisciplinary teams with expertise in biology and ecology of lagoonal biotas [10]. With this contextual background on heavy metal behavior, toxicity, and measurement, we now examine the potential for using foraminifers in monitoring and risk assessment of coastal ecosystems.…”

Section: Anthropogenic Pollutionmentioning

confidence: 99%

“…Although a few experiments have addressed the use of foraminifers as indicators of pollution [10], there is need to elucidate the physiological and biochemical impacts of heavy metals and other contaminants at the community , population and individual physiological and biochemical activity levels. Addressing these needs will require many more field and laboratory based experiments , ranging from microcosm experiments to test responses of individual taxa to macrocosm studies of foraminiferal assemblages.…”

Section: Plate 1 Morphological Abnormalities On Foraminiferamentioning

confidence: 99%

“…The bottom waters were collected by making use of shallow water sampler. The water samples were collected and stored in polyethylene bottles fitted with tight stoppers and screw caps and indexed accordingly [10]. Four paralic environment that exhibit contrasting environmental conditions of Brazilian coast and some estuaries of east coast of India have been selected for comparison ( Table.2).…”

Section: Sample Collectionmentioning

confidence: 99%

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Anthropogenic Impact on the Pulicat Lagoon Monitoring with Foraminifera, East coast of India

C¹,

Jayaraju²,

R³

2012

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Coastal lagoons are well investigated areas because of their economical and ecological importance. Pulicat Lagoon system which is a store house of all resources is under great threat following the anthropogenic pollution. This complex lagoon ecosystem's surface area is about 500 sq.kms. In spite of the System's conservation statutes its structure has been degenerating rapidly because of pressures fishing, tourism and agricultural activities. Fishing production of Pulicat Lagoon System is approximately 52 tons/ha/year. Although a serious fishery pressure has been determined in the area, according to mortality rate and age compositions, it has been found that the growth of marine life in the environment is in unhealthy condition. The date show that land based and atmospheric sources account about two-thirds of the total impact of contaminants in to the marine lagoon constituting 44 % and 33 % respectively. A total of 30 sediment samples were collected with in the depth zone of 5 fathoms from the lagoon. The study yielded 50 benthic foraminiferal species belongs to 24 genera, 16familys, 8 super families and 3 sub-orders. Variations are also reflected on the foraminiferal test morphology, diversity and distribution. A high percentage of foraminifers almost exclusively Ammonia have damaged shells with a few channels to entire whorl missing. The phenomenon is stress response to the anthropogenic pollution. The Ammonia-Elphidium assemblage is dominant in all stations followed by Spiroloculina -Bolivina assemblage.Suggestions for development of the lagoon management and maximum sustainable marine life production have been offered by determining the present lagoon management and some a biotic characteristics of this ecosystem. Many studies assume or conclude that foraminiferal assemblages and the frequency of deformed tests are proxy indicators of pollution, but others present confounding results. Under studying the complexity of anthropogenic pollution, coastal waters and sediment is critical to the design and interpretation of meaningful studies.Keywords Lake, Foraminifera, Ecology, Anthropogenic Pollution, Ecological Parameters 1.IntroductionThe study area, is located in the Survey of India toposheets nos: 66 B/2, 66 B/3, 66 C/2 respectively at the scale of 1: 50,000. The study area lies between longitudes 80o 02' -80o 20' E and latitudes 13o22'-13o 45' N (Fig.1). The total area of the lagoon is about 500 sq kms. The lake is marked by steeply rising ridges, having a height of about 17m from the mean sea level (MSL) and composed of Quartzites of Cuddapah Super group (Proterozoic) [1]. The steep and plain topography is due to the great difference in age between the Archean of the plain country and the Proterozoic of the high lands and also due to the greater resistance for erosion offered by quartzites compared to gneisses. The important ephemeral rivers that join the lake include Arani and Kalangi (Fig.1)[2]. Enormous quantities of fresh water influx along * Corresponding author: sundherreddy@gmail.com (Sundar...

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“…Abnormal test morphology in benthic foraminifera are well known from the geological record [10] (Table 3). Here are some of the abnormalities noted in the study area (Plate.1)…”

Section: Foraminiferal Assemblagesmentioning

confidence: 99%

Section: Anthropogenic Pollutionmentioning

confidence: 99%

Section: Plate 1 Morphological Abnormalities On Foraminiferamentioning

confidence: 99%

Section: Sample Collectionmentioning

confidence: 99%

See 2 more Smart Citations

Anthropogenic Impact on the Pulicat Lagoon Monitoring with Foraminifera, East coast of India

C¹,

Jayaraju²,

R³

2012

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“…variations in pH, pCO 2 , temperature, food type and salinity, organic matter, Cu, Hg and oil) using a series of monospecific cultures (e.g. Ammonia aomoriensis, Ammonia beccarii, Ammonia tepida, Haynesina germanica, Pararotalia nipponica, Bulimina marginata and Rosalina leei), for a review see [10]. Furthermore, along with field studies, these experiments can be integrated with mesocosm tests that effectively represent the natural conditions (i.e.…”

Section: Introductionmentioning

confidence: 99%

The Response of Benthic Foraminiferal Assemblages to Copper Exposure: A Pilot Mesocosm Investigation

Fabrizio¹,

Coccioni

2012

JEP

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Controlled experiments, including mesocosms and laboratory cultures, are used to identify a potential specific causeeffect relationship that has been previously inferred in field studies. In this study, a series of mesocosm experiments are carried out to assess the impact of different concentrations of copper on benthic foraminiferal assemblages over time. This pilot investigation documents that Cu contamination has a detrimental effect on foraminifera when compared to original and control samples. In particular, increased concentrations of Cu (normally higher than 120 µg/l) lead to a lowering of foraminiferal density and diversity and an increased occurrence of abnormalities. This study thus supports that the use of an experimental approach is suitable for investigating the response of benthic foraminifera to stress including pollution. Moreover, the application of mesocosms represents an innovative tool to be placed alongside field studies and culture experiments.

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Impact and Resilience of Benthic Foraminifera in the Aftermath of the Deepwater Horizon and Ixtoc 1 Oil Spills

Schwing

2019

Deep Oil Spills

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Application of foraminifers in ecotoxicology: Retrospect, perspect and prospect

Cited by 78 publications

References 59 publications

Anthropogenic Impact on the Pulicat Lagoon Monitoring with Foraminifera, East coast of India

Anthropogenic Impact on the Pulicat Lagoon Monitoring with Foraminifera, East coast of India

The Response of Benthic Foraminiferal Assemblages to Copper Exposure: A Pilot Mesocosm Investigation

Impact and Resilience of Benthic Foraminifera in the Aftermath of the Deepwater Horizon and Ixtoc 1 Oil Spills

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