196 resultados para South-west
Resumo:
This is the report from the South and West Cumberland Fisheries Advisory Committee meeting, which was held on the 26th June, 1978. It covers information on the monitoring of radioactivity in migratory fish, fishing offences and prosecutions and the income from the sale of rod and line licences. It also includes the review of discharge consent conditions, illegal netting and water quality. It also covers the report by the area fisheries officer on river conditions and fishing, migratory fish movements, and an update on Holmwrangle hatchery. Included in this report is also the fish mortalities, survey and research work on Ennerdale Lake, In-River engineering works on the Derwent, Calder, Irt and Esk, and the stocking numbers of salmon and sea trout by the Water Authority. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.
Resumo:
This is the report from the South and West Cumberland Fisheries Advisory Committee meeting, which was held on the 16th October, 1978. It covers information on fisheries income and expenditure, the study of salmon propagation in England and Wales, work on the future programme of fisheries work, keep nets, and the drought order for the reduction of compensation water from Lake Ennerdale. It also covers the report by the area fisheries officer on fishing activities including river conditions and fishing, migratory fish movements, and an update on Holmwrangle hatchery. The report also looks at stocking numbers of salmon and sea trout in various rivers, predator counts for various rivers, fish mortalities and fish disease. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.
Resumo:
This is the report from the South and West Cumberland Fisheries Advisory Committee meeting, which was held on the 10th January, 1977. The report contains information on water resources development in West Cumbria, Branthwaite Weir regarding the construction of a fish pass, fisheries activities, fish stocking, eel fishing on estuarial waters, and infectious Pancreatic Necrosis which highlights its prevention on imports of salmonid fish and ova. The section on fisheries activities includes general information on the River Derwent; diseases; fish mortalities; Holmwrangle hatchery and land drainage works. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.
Resumo:
This is the report from the South and West Cumberland Fisheries Advisory Committee meeting, which was held on the 18th October, 1976. The report contains sections on fish stocking, the drought situation, Branthwaite Weir, and fisheries activities. The section on fish stocking includes background information about fish stocking by the authority; difficulties; migratory fish; non-migratory trout and coarse fish; stocking after pollution; stocking of waters within the region; stocking with coarse fish; and recommendations. The section on the fisheries activities includes general information of several Rivers (Derwent, Ellen, Ehen, Irt and Calder); stocking; surveys/experiments; fish transfers/mortalities/disease; and an update on Holmewrange hatchery. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.
Resumo:
This is the report from the South and West Cumberland Fisheries Advisory Committee meeting, which was held on the 28th June, 1976. The report contains sections on Branthwaite Weir and fisheries activities. The section on fisheries activities during the period 13th January-2nd March includes stocking; biological surveys; fish mortalities; hatcheries and redd counting. The section on fisheries activities during the period 2nd March-20th May includes a general report of the area; fry stocking/rearing; River works (River Ehen, Calder, Derwent, and Glenderamackin); coarse fish removal; and fish transfers. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.
Resumo:
This is the report on the strategic fisheries stock assessment survey of the minor catchments in South West Cumbria 1996 with particular reference to salmonids, produced by North West Water in 1994. The 1996 Minor Catchment survey indicates variations in salmonid production within these catchments. Survey results indicate that production may be reaching its limit in certain areas whilst others are underachieving and others are unsuitable for salmonid production. Trout production within the catchments is higher and more widespread than that of salmon. Water quality levels vary considerably between catchments and intra-annually within individual catchments. The need for selective habitat surveys, with a view to habitat improvement schemes (H.I.S) is discussed. This report formed a basis for subsequent reports, thus, allowing data comparisons and analysis of production level fluctuations. It was the most extensive assessment of these catchments to date, taking into account comparisons with the new National Database on salmonid production in England and Wales.
Resumo:
Dissolved nutrients (PO sub(4)-P, NO sub(3)-N, NO sub(2)-N and SiO sub(4)-Si) estimated in the surface and bottom waters of five selected stations of the Paravur Lake, Kerala, India, during February 1987 to January 1988 revealed distinct seasonal variations. Rainfall and land drainage play significant roles in the nutrient economy, particularly NO sub(3)-N and SiO sub(4)-Si, of this water body. Abnormally high values of PO sub(4)-P indicated extremely polluted condition at the wetting zone of the lake during the premonsoon season. SiO sub(4)-Si showed significant negative relationship with salinity.
Resumo:
Relative abundance and diurnal variations of zooplankton from six anchor stations along Kerala coast were investigated. Samples were collected during April-May 1988 at three hour intervals from depths varying between 15 and 40 m from the traditional fishing grounds of Kerala coast. Average biomass values ranged from 45-95 ml 100/mˉ³. Increase in zooplankton at night was discernible at most of the stations and the highest biomass noticed was 131 ml 100/mˉ³. Copepods formed the most abundant group, of which calanoids predominated. A swarm of the hydromedusan species, Aequorea conica, (181/mˉ³) was seen at night. Quantitative and qualitative variations of various zooplankton groups from six stations in relation to selected physicochemical factors are discussed. Maximum fish larvae were observed in the night samples. Relatively high abundance of sardines, carangids and flat fish larvae in the collections is in agreement with the predominance of fish catch from the area of study.
Resumo:
An experimental culture practice of P. monodon on extension approach was conducted in two brackish water earthen ponds of Demonstration Farm and Training Center (DFTC), Kaliganj, Satkhira. The experiment was aimed to provide farmers with appropriate technology that can immediately improve pond yield with keeping the environment in friendly condition. For optimization of stocking density of a cost effective environmental friendly improved extensive shrimp farming, the ponds were stocked with coastal river post larvae of P. monodon at the stocking rates of 2 pls/m² and 2.5 pls/m² without supplementary feeding. To control experimental error another five farmer's gher were used as replicates of each demo-pond. Considering the farmers buying ability, cost of inputs and other facilities kept minimal. The impact of stocking density was evaluated on the basis of growth, survival rate, production and economic return. Better production (average 299.01 kg/ha) with same survival rate (39.33%) were found with a stocking density of 2.5 pls/m² without causing any deterioration in the culture environment.
Resumo:
Sargassum is a brown seaweed from which alginic acid is extracted. A survey was carried out off the south-west coast of Ceylon in December 1963 and January 1964 with the view to determining the quantity of Sargassum available.
Resumo:
According to the statistical data published annually in the Administration Report of the Director of Fisheries, the bloodfish production in 1967-68 showed about 100% increase over a period of five years and the production figures for none of the other groups of fishes have exhibited a parallel to this. Furthermore, the bloodfish group ranks first in the order of production, having displaced the herring and sardine group which had been in the lead for over a decade. This indicates that increasing attention was paid on the production of this group of fishes, in the coastal waters of Sri Lanka.
Resumo:
Sri Lanka is a comparatively small island (65.584 km²) within the equatorial belt of calms. There are only slight seasonal variations in temperature, air humidity and day length. A description is given of the amphibian and reptile material brought back from the Austrian Indo-Pacific expedition, 1970-71. Some notes on the habitat of the animals are included.
Resumo:
Hydrographic data collected from east coast of India during 1994 monsoon period revealed that these waters are highly characterized by upwelling especially in the coastal waters with more intensity in the southern part of the region. However, the near surface salinity stratification consequent to high fresh water inflow into the bay was absent in the present study. Oil sardines are directly influenced by hydrographic parameters such as salinity and temperature and stratification of these parameters are the major reasons for non-availability/migration of oil sardine from this region in the earlier years. Considering the recent topographical change in the east coast coupled with hydrological stability an attempt has been made in this paper to give reasonable justification to the reported bumper catches of oil sardines from 1994 on wards in the east coast of India.
Resumo:
A participatory on-farm trial was carried out to evaluate the production performance of
GIFT (genetically improved farmed tilapia) strain of Oreochmis sp., either alone or
with silver barb (Barbodes gonionotus), in six rain-fed freshwater ponds of coastal area.
There vvere two treatments; (i) GIFT alone at a stocking density of 24,700/ha (T1) and
(ii) 1:1 combination of GIFT and silver barb (T1). Each of the treatments had three
replications. A significantly (p
Resumo:
Nine different categories of stakeholders in shrimp farming industry ·were assessed to show the socioeconomic impact of shrimp farming in south-west Bangladesh. Among all the stakeholders the shrimp farmer's average own land was 4 ha whereas the seed collectors and faria's had lowest amount of average land, 0.1 and 0.5 ha respectively. The shrimp farming positively impacted to the livelihood of stakeholders. Income of the coastal people, sanitation, working facilities of women, employment, health condition and the literacy rate increased due to shrimp farming. On the other hand shrimp farming had negative impact on the rice production, livestock, drinking water supply, and social conflict and violence had increased due to shrimp farming. There were internal conflicts between different stakeholders; the farias conflict with the depot owners and shrimp farmers, marginal farmers' conflict with the rich shrimp farmers about leasing lands and saline water control, the rice farmers conflicts with the shrimp farmers about agricultural crop production.