Estuaries

Report filed on behalf of Greater Chennai Corporation regarding Cooum river pollution, Chennai, Tamil Nadu, 10/11/2023

Report filed on behalf of Greater Chennai Corporation regarding pollution of Adyar estuary. Under the Chennai Rivers Restoration Trust (CRRT) project of eco restoration of Cooum river, construction of compound wall, boundary fence of the Cooum river have been taken up for a length of 23.92 km for preventing encroachments …

Role of estuaries in sustainability of coastal environment

A general survey of the fertility of 25 estuaries, based on their concentrations of nutrients, phytoplankton and zooplankton assemblage and fish production in each, as far as these are known, has been enumerated. In all 25 estuaries, of both the coasts 8 from the east coast which end up in …

Detecting and understanding drivers of natural and eco-environmental vulnerability due to hydro geophysical parameters, ecosystem and land use change through multispectral satellite data sets in …

The Apodi estuarine located in the north coast of Rio Grande do Norte State; it is a typical and key valley region with apparent upland ecosystem vulnerability and sensitivity. In order to analyze natural and eco­environmental vulnerability, remote sensing (RS) and geographical information system (GIS) technologies are adopted and an …

Eco-restoration of Adyar estuary may begin in a month

B. Aravind KumarChennai: The master plan for eco-restoration of the Adyar estuary is ready and work is expected to begin in a month.IL&FS Ecosmart, consultant for eco-restoration of Adyar estuary, submitted the master plan to the Tamil Nadu Urban Infrastructure Financial Services Limited (TNUIFSL) last week. Ecosmart has proposed three …

Industrial sewage has been a major pollutant

MUMBAI: The survey of coastal waters suggests that the influx of industrial waste into inner estuarine zones-tidal areas where the sea meets rivers-should be discouraged for new industries. Stringent measures are also suggested for the treatment of effluents that are presently released into the sea without any controls. The study, …

Physico chemical properties of water collected from Dhamra estuary

The temporal and spatial distribution of salinity, DO, BOD, turbidity, pH, hardness and dissolved nutrients of surface water collected from different points of Dhamra estuary were measured during February-2007 to January-2008. The pH of water was alkaline throughout the year. The salinity, conductance, hardness increased towards the river mouth as …

Arsenite tolerance and biotransformation potential in estuarine bacteria

Bacterial isolates from water and sediment samples from freshwater, estuarine and marine regions were tested for their growth in the presence of different concentrations of arsenic. Despite the generation times being longer in case of all bacterial isolates tested in nutrient broth with 200 ppm Arsenite (As3+), many of them …

Influence of anthropogenic activities on the existing environmental conditions of Kandla Creek (Gulf of Kutch)

Water characteristics of Kandla creek, monitored seasonally from 2002 to 2006 at four locations (mouth, cargo jetty, oil jetty and junction), indicated significant increases in nutrients, petroleum hydrocarbons (PHc) and phenols from anthropogenic additions, while increases in turbidity, total suspended solids (TSS) and salinity from natural effects. Principal Component Analyses …

Chemical imbalance

The waters in the Sunderban delta are fast changing in quality. The western waters are fresher, lighter and less saline while the eastern sector is saltier and less transparency. Both are warmer—a sure consequence of climate change. Abhijit Mitra’s team from the department of marine science in the University of …

Effect of salinity and dissolved nutrients on the occurrence of some seaweeds in Manakkudy estuary

Manakkudy estuary, located on the South-West coast of India has production of seaweeds to an amount of 15.59 kg/m2/yr. Four different types of seaweeds viz., Chaetomorpha aerea, Enteromorpha compressa, Gracilaria verrucosa and Hypnea musciformis were observed in this estuary. Highest production of biomass (C. aerea = 842.33

The environmental case of Sindh

This study documents the deteriorating riverine environment of Sindh. Previous studies have also highlighted this issue but the referencing and documentation is generally fragmentary. The environmental case of Sindh is contested by the federal government so for the purpose of this study the authors have decided to use predominantly official …

A study on the physico-chemical characters in a minor estuary of West Coast of India

The study on physico chemical characteristics of estuary (Rajakkamangalam) water samples were collected in four sampling stations were studied in 2001.

Study on the distribution of 226 Ra and 228 Ra activities in the Cochin backwater ecosystem

Studies on the environmental distribution of radionuclides, namely 226 Ra and 228 Ra are important in the context of external and ingestion hazards evaluation. The Cochin backwater, located in the south-west coast of India is a potential sink for anthropogenic inputs of natural radionuclides. The estuary in its surroundings is …

Estuarine characteristics of lower Krishna river

Present study consist the spatial and temporal variations of depth, temperature and salinity, currents, flushing times and classification of the Krishna estuary. Temperature exhibited a distinct seasonal variation with higher values in premonsoon (30.0

Shellfish reefs 'more imperilled than coral'

Reefs built in cooler waters by oysters and other shellfish are the world's most imperilled marine habitats, according to a report.

Physico-chemical characteristics of the coastal water off Devi estuary, Orissa and evaluationof its seasonal changes

Devi estuary is one of the major tributaries of the Mahanadi riverine system in Orissa. Modernization and industrialization in its neighbourhood in the north in the recent past have greatly influenced many tributaries of the Mahanadi and the adjacent coastal environments. To trace the influence of this modernization activity further …

Mouth of Narmada turning into shipbuilding hub

GANDHINAGAR: The estuary of Narmada river, considered lifeline of Gujarat, is all set to become the lifeline for shipbuilding activities of India. In a move with far-reaching consequences, the Gujarat government has decided to develop the 12-km stretch south of Dahej - at the point where the Narmada river meets …

Green and mean: The downside of clean energy

How do you choose between a wilderness and a power station? The tough choices associated with large-scale renewable energy projects are dividing the green movement.

Environmental flows in water resources policies, plans, and projects: findings and recommendations

This report addresses one of the greatest shortcomings of water resource development projects: the inadequate protection of environmental flow conditions in rivers, lakes, wetlands, estuaries, and groundwater systems. This deficiency has affected hundreds of millions of people whose lifestyles and well-being depend upon natural ecosystem services provided by healthy freshwater …

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