Bioavailability, Bioaccumulation and Tolerance of Chromium: Consequences in the Food Chain of Freshwater Ecosystems

2004 ◽  
Vol 94 (78) ◽  
pp. 505-513 ◽  
Author(s):  
Gessica Gorbi ◽  
Marion Invidia ◽  
Corrado Zanni ◽  
Anna Torelli ◽  
Maria Grazia Corradi
Keyword(s):  
Food Chain ◽  
Freshwater Ecosystems

scholarly journals Existence of Microplastic as Pollutant in Harike Wetland: An Analysis of Plastic Composition and First Report on Ramsar Wetland of India

2021 ◽  
Vol 16 (1) ◽  
pp. 123-133
Author(s):  
Shaista Manzoor ◽  
Harpreet Kaur ◽  
Rahul Singh
Keyword(s):  
Surface Water ◽  
Marine Environment ◽  
Food Chain ◽  
High Density Polyethylene ◽  
Migratory Birds ◽  
Freshwater Ecosystems ◽  
Environmental Issue ◽  
Fish Diversity ◽  
Ramsar Wetland ◽  
Harike Wetland

Wetlands are ecologically important and productive environments which help in several global processes. Microplastic pollution is an environmental issue of great concern. The studies related to this issue have been reported chiefly on the marine environment whereas freshwater ecosystems especially wetlands are receiving less consideration. Harike wetland is a northern largest wetland of India with area at present of 86km2. It is home to several migratory birds along with being rich in fish diversity. In this study the presence and type of microplastic in surface water of Harike wetland were investigated. Two types of microplastic are found in harike wetland namely nylon (Nylon 6) and high density polyethylene with size ranging from 4mm to 60µm. Results from the FTIR, RAMAN and GC-MS confirmed the presence of microplastic in Harike wetland. Rivers Sutlej and Beas could be a source of sewage input towards Harike wetland thereby being the reason of microplastic contamination in it. This study insights better understanding of microplastic pollution in wetlands giving way towards the threat that microplastic transfer could cause through the food chain and affect other organisms.

scholarly journals Consumptive water use associated with food waste: case study of fresh mango in Australia

2009 ◽  
Vol 6 (4) ◽  
pp. 5085-5114 ◽  
Author(s):  
B. G. Ridoutt ◽  
P. Juliano ◽  
P. Sanguansri ◽  
J. Sellahewa
Keyword(s):  
Water Content ◽  
Water Use ◽  
Food Chain ◽  
Food Production ◽  
Product Life Cycle ◽  
Virtual Water ◽  
Freshwater Ecosystems ◽  
Consumptive Water Use ◽  
Freshwater Resource ◽  
Consumptive Water

Abstract. In many parts of the world, freshwater is already a scarce and overexploited natural resource, raising concerns about global food security and damage to freshwater ecosystems. This situation is expected to intensify with the FAO estimating that world food production must double by 2050. Food chains must therefore become much more efficient in terms of consumptive water use. For the small and geographically well-defined Australian mango industry, having an average annual production of 44 692 t of marketable fresh fruit, the average virtual water content (sum of green, blue and gray water) at orchard gate was 2298 l kg−1. However, due to wastage in the distribution and consumption stages of the product life cycle, the average virtual water content of one kg of Australian-grown fresh mango consumed by an Australian household was 5218 l. This latter figure compares to an Australian-equivalent water footprint of 217 l kg−1, which is the volume of direct water use by an Australian household having an equivalent potential to contribute to water scarcity. Nationally, distribution and consumption waste in the food chain of Australian-grown fresh mango to Australian households represented an annual waste of 26.7 Gl of green water and 16.6 Gl of blue water. These findings suggest that interventions to reduce food chain waste will likely have as great or even greater impact on freshwater resource availability as other water use efficiency measures in agriculture and food production.

Moving Up The Food Chain

2011 ◽  
pp. 030811155447 ◽  
Author(s):  
Lauren Wolf
Keyword(s):  
Food Chain

Clones and the Human Food Chain

2008 ◽  
Vol 38 (3) ◽  
pp. 48
Author(s):  
GREG FEERO
Keyword(s):  
Food Chain ◽  
Human Food ◽  
Human Food Chain

Tracing pathogens in the food chain

2011 ◽  
Author(s):  
Stanley Brul ◽  
Pina M. Fratamico ◽  
Tom A. McMeekin
Keyword(s):  
Food Chain

The concept of local explosion in freshwater ecosystems

2013 ◽  
Vol 25 (1-2) ◽  
pp. 136-148
Author(s):  
I. V. Gryb
Keyword(s):  
Species Composition ◽  
Aquatic Environment ◽  
Arid Zone ◽  
Fish Fauna ◽  
River Basins ◽  
Freshwater Ecosystems ◽  
Human Society ◽  
Living Matter ◽  
Ecosystem Recovery ◽  
Average Temperature

The concept of an explosion in freshwater ecosystems as a result of the release of accumulated energy, accompanied by the destruction of the steady climax successions of hydrocenoses is presented. The typification of local explosions as well as methods for assessing their risk during the development of river basins are shown. The change in atmospheric circulation, impaired phases of the hydrological regime of rivers, increasing the average temperature of the planet, including in Polesie to 0,6 ºC, deforestation leads to concentration and release of huge amounts of unmanaged terrestrial energy, which manifests itself in the form of disasters and emergencies. Hydroecological explosion is formed as a result of multifactorial external influence (natural and anthropogenic) on the water body in a certain period of time. Moreover, its level at wastewater discharge depends on the mass of recycled impurities and behaved processing capacity of the reservoir, and the mass of dumped on biocides and the possibility of the water flow to their dilution and to the utilization of non-toxic concentrations. In all these cases the preservation of "centers of life" in the tributaries of the first order – local fish reproduction areas contributed to ecosystem recovery, and the entire ecosystem has evolved from equilibrium to non-equilibrium with further restructuring after the explosion and environmental transition to a new trophic level. It means that hydroecological explosion can be researched as the logical course of development of living matter in abiotic environmental conditions, ending abruptly with the formation of new species composition cenoses and new bio-productivity. The buffer capacity of the water environment is reduced due to re-development and anthropic transformation of geobiocenoses of river basins, which leads to a weakening of life resistance. This applies particularly to the southern industrial regions of Ukraine, located in the arid zone that is even more relevant in the context of increased average temperature due to the greenhouse effect, as well as to Polesie (Western, Central and Chernihiv), had been exposed to large-scale drainage of 60-80th years, which contributed to the degradation of peatlands and fitostroma. Imposing the western trace of emissions from the Chernobyl accident to these areas had created the conditions of prolonged hydroecological explosion in an intense process of aging water bodies, especially lakes, change in species composition of fish fauna and the occurrence of neoplasms at the organismal level. Under these conditions, for the existence of man and the environment the vitaukta should be strengthened, i.e. buffer resistance and capacitance the aquatic environment, bioefficiency on the one hand and balanced using the energy deposited - on the other. This will restore the functioning of ecosystems "channel-floodplain", "riverbed-lake", reducing the energy load on the aquatic environment. Hydroecological explosions of natural origin can not be considered a pathology – it is a jump process of natural selection of species of biota. Another thing, if they are of anthropogenic origin and if the magnitude of such an impact is on the power of geological factors. Hydroecological explosions can be regarded as a manifestation of environmental wars that consciously or unconsciously, human society is waging against themselves and their kind in the river basins, so prevention of entropy increase in the aquatic environment and the prevention of hydroecological explosions is a matter of human survival. While the man - is not the final link in the development of living matter, it can develop without him, as matter is eternal, and the forms of its existence are different.

Influence of planting density and planting date on the occurrence ofFusariumroot rot on winter wheat — A phytosanitary food chain problem

2006 ◽  
Vol 34 (1) ◽  
pp. 769-772 ◽  
Author(s):  
Jasenka Cosic ◽  
Karolina Vrandecic ◽  
Dario Novoselovic ◽  
Georg Drezner ◽  
Drazenka Jurkovic
Keyword(s):  
Winter Wheat ◽  
Food Chain ◽  
Planting Date ◽  
Planting Density ◽  
Chain Problem
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