Unionacean Clams as Indicators of Persistent Substances in Fresh Water

1983 ◽  
Vol 15 (S1) ◽  
pp. 37-42
Author(s):  
A Forester
Keyword(s):  
Fresh Water ◽  
Food Chain ◽  
Toxic Metals ◽  
Aquatic Environment ◽  
Extended Period ◽  
Coastal Pollution ◽  
Biological Availability ◽  
Abundance Distribution ◽  
Secondary Function ◽  
Shield Lakes

Measurement of total or nominal pollutant concentration in the physical compartment of the aquatic environment (water, sediments, etc.) seldom gives a valid indication of the ultimate threat to the ecosystem. An alternative is to use a living organis to reflect the biological availability of the contaminant and to integrate its changing levels in the environment by monitoring over an extended period. Pelecypods have been used as indicators of marine coastal pollution, but have received relatively little attention in fresh waters. The large, unionacean clams and mussels show a number of features which suggest that they would be useful as monitors of biological availability of freshwater pollutants: ability to accumulate a wide variety of contaminants; mode of feeding; position on food chain; longevity; sedentary habits; facility with which their age can be determined; abundance; distribution; size and hardiness. The current programme is concerned with: (1) evaluating unionaceans as potential indicators and the factors that affect pollutant uptake; (2) development of the methodology for monitoring; and (3) characterisation of the pollutant status of Ontario shield lakes which are subject to direct inputs of toxic metals with the precipitation and their mobilisation through the ecosystem as a secondary function of environmental acidification.

scholarly journals Establishing the baseline for using plankton as biosensor

2019 ◽  
Author(s):  
Vito P. Pastore ◽  
Thomas Zimmermann ◽  
Sujoy K. Biswas ◽  
Simone Bianco
Keyword(s):  
Artificial Intelligence ◽  
Food Chain ◽  
Aquatic Environment ◽  
Morphological Features ◽  
Woods Hole Oceanographic Institution ◽  
Large Dataset ◽  
Environmental Threat ◽  
Detection Approach ◽  
Basic Set ◽  
Plankton Species

ABSTRACTPlankton is at the bottom of the food chain. Microscopic phytoplankton account for about 50% of all photosynthesis on Earth, corresponding to 50 billion tons of carbon each year, or about 125 billion tonnes of sugar[1]. Plankton is also the food for most species of fish, and therefore it represents the backbone of the aquatic environment. Thus, monitoring plankton is paramount to infer potential dangerous changes to the ecosystem. In this work we use a collection of plankton species extracted from a large dataset of images from the Woods Hole Oceanographic Institution (WHOI), to establish a basic set of morphological features for supporting the use of plankton as a biosensor. Using a perturbation detection approach, we show that it is possible to detect deviation from the average space of features for each species of plankton microorganisms, that we propose could be related to environmental threat or perturbations. Such an approach can open the way for the development of an automatic Artificial Intelligence (AI) based system for using plankton as biosensor.

scholarly journals Metabolic, Bioproductive and Reproductive Effects of Aquatic Exposure to Cadmium in Dish- A Review

2017 ◽  
Vol 74 (1) ◽  
pp. 1
Author(s):  
Bogdan GEORGESCU ◽  
Daniel MIERLITA ◽  
Danut STRUTI ◽  
Hermina KISS ◽  
Anca BOUARU
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Food Security ◽  
Natural Resources ◽  
Food Chain ◽  
Aquatic Environment ◽  
Reproductive Effects ◽  
Human Food Chain ◽  
Growth Development ◽  
Cd Exposure

Cadmium (Cd) exposure in fish is the result of aquatic pollution with heavy metals, which is mainly caused byanthropic interventions. Rarely, Cd mobilization from natural resources takes place. Bioaccumulation in tissues and organs is a property of this heavy metal, to generate various pathological effects and major risks due to bio-propagation within the human food chain. Wehereby reviewed the main circumstances and levels of exposure to Cd in the aquatic environment, and effects on growth, development and reproduction induced by its bioaccumulation in fish, as well as the possible ramifications for food security in humans. 

Alleviative Effects of C60 on the Trophic Transfer of Cadmium along the Food Chain in Aquatic Environment

2019 ◽  
Vol 53 (14) ◽  
pp. 8381-8388 ◽  
Author(s):  
Zuohong Chen ◽  
Xiaoshan Zhu ◽  
Xiaohui Lv ◽  
Yuxiong Huang ◽  
Wei Qian ◽  
...  
Keyword(s):  
Food Chain ◽  
Aquatic Environment ◽  
Trophic Transfer

scholarly journals Fresh-Water Mollusks as Biomonitors for Ecotoxicity of Nanomaterials

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 944
Author(s):  
Natalia Abramenko ◽  
Petr Mashkin ◽  
Sergey Volkov ◽  
Vladimir Olshanskiy ◽  
Leonid Kustov
Keyword(s):  
Fresh Water ◽  
Aquatic Environment ◽  
Field Studies ◽  
Physiological Parameters ◽  
Toxic Effects ◽  
Neural Systems ◽  
Unio Tumidus

The use of different nanoparticles (NPs) is growing every year since discoveries of their unique properties. The wide use of nanomaterials has raised concerns about their safety and possible accumulation in the aquatic environment. Mussels are being considered as one of the most suitable organisms for bioaccumulation monitoring. Within our study, we focused on developing the method that can be applied in field studies of ecotoxicity and can be nondestructive and informative at early times of exposure, while at the same time being based on changes of physiological parameters of fresh water mussels. The changes in the cardiovascular and neural systems of mollusks (Anodonta anatina and Unio tumidus) were measured as biomarkers of toxic effects. Different monometallic and bimetallic NPs, silicon NPs with various ligands were applied as test substances. Changes in cardiovascular and neural functions were in good correlation with accumulation tests for all tested NPs.

scholarly journals Plastic Litter as Pollutant in the Aquatic Environment: A mini-review

2020 ◽  
Vol 12 (1) ◽  
pp. 167
Author(s):  
Rifka Rimbi Anggraini ◽  
Yenny Risjani ◽  
Uun Yanuhar
Keyword(s):  
Environmental Health ◽  
Trophic Level ◽  
Food Chain ◽  
Aquatic Environment ◽  
Negative Impact ◽  
Trophic Levels ◽  
Aquatic Biota ◽  
Chain Process ◽  
Special Concern ◽  
Entire World

HighlightThe issue of plastic litter and microplastics which is currently of special concern in global particularly IndonesiaThe review of size, colour and shape of microplastics that becomes part of the plastic litterThe observed review highlight of plastic litter and microplastics impact on environmental health particularly aquatic biotaAbstractThe negative impact that comes from plastic litter in the aquatic environment is a scourge for the entire world including Indonesia.Plastic litter has a huge influence on the most biota who lives in symbiosis with along the aquatic environment as it is able to sustainability. Moreover, there are other factors that cause the death of aquatic biota. Nowadays, the negative impact of plastic litter occurs on an ongoing basis through the food chain process which until now has not been well studied. Therefore, it is necessary to do further studies on the influence of the food chain as a vector of plastic litter distribution, particularly microplastic on aquatic biota from the first trophic level to high trophic levels. 

scholarly journals ENTEROCOCCUS SP ISOLATED FROM AQUATIC ENVIRONMENT : RESISTANCE TO TOXIC METALS

2019 ◽  
pp. 82-97
Author(s):  
Luciana Furlaneto-Maia ◽  
Gabriela Batista Gomes Bravo ◽  
Sharise Beatriz Roberto ◽  
Naiara de Oliveira Batista ◽  
Alex Kiyomassa Watanabe ◽  
...  
Keyword(s):  
Toxic Metals ◽  
Aquatic Environment

scholarly journals Refocusing on Nonpriority Toxic Metals in the Aquatic Environment in China

2017 ◽  
Vol 51 (6) ◽  
pp. 3117-3118 ◽  
Author(s):  
Zhiyou Fu ◽  
Wenjing Guo ◽  
Zhi Dang ◽  
Qing Hu ◽  
Fengchang Wu ◽  
...  
Keyword(s):  
Toxic Metals ◽  
Aquatic Environment

Nano-plastics in the aquatic environment

2015 ◽  
Vol 17 (10) ◽  
pp. 1712-1721 ◽  
Author(s):  
K. Mattsson ◽  
L.-A. Hansson ◽  
T. Cedervall
Keyword(s):  
Food Web ◽  
Food Chain ◽  
Aquatic Environment ◽  
Aquatic Food Chain ◽  
Aquatic Food

Nano-sized plastics originate from direct release of nanoparticles or from degradation of discarded plastic and mainly enter the aquatic food chain through uptake by algae or herbivorous invertebrates, and then continue up the food web.

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