1997 fisheries statistics, Lake Kariba - Zimbabwe shore

The report provides catch records for the kapenta (Limnothrissa miodon) and inshore fisheries in the Zimbabwean waters of Lake Kariba for the year 1997. Kapenta usually constitute about 94% of the total catch from Lake Kariba; for statistical purposes catches are recorded for the 5 hydrological basins - Mlibizi, Binga, Sengwa, Bumi and Kariba. The kapenta, which occupy the open pelagic waters of the lake, represent a unit stock which is harvested by both Zimbabwe and Zambia; the artisanal fishery exploits inshore species which generally occupy water less than 10m deep along the shoreline. The Zambian and Zimbabwean inshore fisheries may therefore be considered to be exploiting 2 separate stocks. The main species in the inshore fishery are Oreochromis mortimeri, Sargochromis codringtonii, Tilapia rendalli, Labeo altivelis, Hydrocynus vittatus, Mormyrus longirostris, M.anguilloides and Clarias gariepinus.

1998 fisheries statistics, Lake Kariba - Zimbabwe shore

The report contains data, statistics and information for both the pelagic and inshore fisheries of Lake Kariba for the year 1998. Time series data and notes for the 2 fisheries are included. The pelagic fishery exploits kapenta, the freshwater sardine Limnothrissa miodon, and is carried out all year round using light for attracting the fish. Two types of fishing vessel designs are in use (the pontoon-catamarans and the displacement monohulls) and the type of gear used is the lift net. The inshore fishery distinguishes the fishery that uses gillnets and exploits the indigenous Zambezi River fish species. This fishery is restricted to the lakeshore and uses 3 types of boats - the dugout canoe, fibreglass and metal boats.

National Fisheries Laboratory Category 2 parasite guide

This report provides a guide into Category 2 parasites affecting freshwater fish and salmonids. First a brief summary is given of distinctions between parasites of Category 1 and 2. The Guide then provides a list of category 2 parasites, highlighting damage they can cause, species of fish affected, if it can be treated, how widespread the parasite is and how it is transferred.

Environmental effects of drought and abstractions of River Ouse fisheries, summer 1997

This survey was the second year of a three year study to examine fish populations in relation to low flows, drought and abstraction in the River Ouse. To fully evaluate the possible effects on fisheries the study set out to encompass fish population surveys from fry to adult stock, analysis of angler catch data, reports from anglers and river reports from Environment Agency Fisheries staff.

River Wharfe fisheries monitoring report - summer 2001

This is a report on monitoring carried out in 2001 specifically in relation to effects of flows and abstractions on fisheries in the River Wharfe. The monitoring is a continuation of that started in relation to the Time Limited Abstraction Licences in 1996 and required by the new licences granted in 1999. It gives information regarding fish populations at a range of sites in the River Wharfe and also two tributary sites. It also gives recommendations for future investigations in relation to both Time Limited Licences and general broader issues.

River Ure fisheries monitoring report - summer 2001

Fish population studies in the River Ure have continued for their sixth successive year in order to examine and evaluate the effects of low flows and drought conditions particularly in relation to the Time Limited Licence abstraction at Kilgram Bridge, currently granted to Yorkshire Water Services. This monitoring report looks at the different fish populations and growth rates in the main river and tributaries, comparing the results to previous years. The report also looks at the general findings from angling, the medium term drought impacts, the abstraction impacts, and recommendations for investigations for 2002.

Central area fisheries annual report 1994

The purpose of this report is to record key events/data and to outline the activities of the NRA Central Area Fisheries Function during 1994. The Rivers looked at include the Ribble, Lune, Hodder and Wyre. The issues that the report looks at includes Hydrological and meterological data, catch data for salmon and sea trout, fish kills, and fish stocking. It also lists the Micro-tag returns for 1994 and the six key objectives that the Central Area Fisheries Function has set itself for 1995. The report uses a range of different graphs and tables to display their data.

Central area fisheries annual report 1995

The purpose of this report is to record key events and achievements of the NRA Central Area Fisheries Function in 1995. Rivers include the Ribble, Hodder and Lune. The report looks at Hydrological and meteorological data, site visits made during the year, communications and reports, Capital works and purchases, Stock assessment, monitoring and specific investigations, Fisheries Management advice, Fish kills and rescues, Fish rearing and stocking. It also looks at rod and net catches for salmon and sea trout, micro-tag returns, the drought, the results of the 1995 objectives set the year before and the key objectives for 1996.

Central area fisheries annual report 1996

The purpose of this report is to record key events and achievements of the NRA Central Area Fisheries Function in 1996. Rivers are Ribble, Hodder and Lune. The report looks at Hydrological and meteorological data, site visits made during the year, promotional events that it was involved with; communications and reports, Capital works and purchases, Stock assessment, monitoring and specific investigations, Fisheries Management advice, Fish kills and rescues, Fish rearing and stocking. It also includes catch data for net and rod catches for Salmon and Sea trout; the results of the objectives made last year and key objectives for next year.

Coarse and stillwater trout fisheries. Paper in evidence to the review of fisheries policy and legislation

This paper highlights the social and economic importance of coarse and stillwater trout fisheries and explains the UK Environment Agency's aim, its policies and processes, and its powers for managing and regulating these fisheries, concluding with reasoned proposals for change.

A coarse fish close season on canals. Paper in evidence to the review of fisheries policy and legislation. Paper number: EA-12

This paper gives the results of the Environment Agency's research into the canal close season to the Salmon and Freshwater Fisheries Review Group. It presents the findings of the research, explains why the research was undertaken and how it relates to the Agency's duties. The background for this report includes that angling representative bodies have long argued that the existing situation in which somecanals have a close season and others do not, is unsatisfactory.

Report on eight weeks at the Fisheries Department of the Lancashire River Authority [including a Leeds / Liverpool Canal survey]

This report looks at the interests of the Fisheries Department for the Lancashire River Board, focusing on the Liverpool and Leeds Canal Survey. It looks at finding parasites in fish from an electrofishing survey (roach and perch). This was to contribute towards the main survey with a possible view to suggesting whether or not the parasites were one reason for the poor fish population. Methods of finding parasites are given, and results of what parasites that were found in the fish are discussed.

Fisheries in a changing scene [includes section on proposed Morecambe Bay barrage scheme]: paper presented at Association of River Authorities, Annual Conference, Morecambe, 1967

The report looks at trends developing in the area of the Lancashire River Authority which will, by the turn of the century, bring tremendous pressures to bear on its natural resources, particularly land and water. It looks at difficulties maintaining an environment suitable for all, human or otherwise, including construction of energy plants and increasing population. It explores the scheme of harnessing water on Morecambe Bay, including fishery advantages and disadvantages. The report looks at fish deaths and diseases in Morecambe Bay and the Lancashire area, providing statistics.

Uganda and Malawi field pilots of proposed LSMS fisheries module: summary report

While an overwhelming majority of sub-Saharan African countries exhibit serious weaknesses in statistics pertaining to crop and livestock sectors, the deficiencies in terms of nationally representative data on the fishery sector are even more acute. The very little data available on the sector are essentially derived from case studies of selected fisheries, and the limited nationally representative data available are generally derived from a few questions included in the livestock section of household surveys. These do not permit the detailed characterization of the fishery production systems. As a consequence in many countries the decision-makers and planners lack the most basic information about the role and importance of the fisheries sector to their national economy. As part of an initiative called the Living Standards Measurement Study-Integrated Surveys on Agriculture (LSMS-ISA) project, a collaboration was developed between the World Bank and the WorldFish Center to address this situation. This report provides detail on pilot testing of a fisheries module for living standards measurement surveys.

Prey preference of lingcod (Ophiodon elongatus), a top marine predator: implications for ecosystem-based fisheries management

Many highly exploited ecosystems are managed on the basis of single-species demographic information. This management approach can exacerbate tensions among stakeholders with competing interests who in turn rely on data with notoriously high variance. In this case study, an application of diet and dive survey data was used to describe the prey preference of lingcod (Ophiodon elongatus) in a predictive framework on nearshore reefs off Oregon. The lingcod is a large, fast-growing generalist predator of invertebrates and fishes. In response to concerns that lingcod may significantly reduce diminished populations of rockfishes (Sebastes spp.), the diets of 375 lingcod on nearshore reefs along the Oregon Coast were compared with estimates of relative prey availability from dive surveys. In contrast to the transient pelagic fishes that comprised 46% of lingcod diet by number, rockfishes comprised at most 4.7% of prey items. Rockfishes were the most abundant potential prey observed in dive surveys, yet they were the least preferred. Ecosystem-based fisheries management (EBFM) requires information about primary trophic relationships, as well as relative abundance and distribution data for multiple species. This study shows that, at a minimum, predation relative to prey availability must be considered before predator effects can be understood in a management context.