RAP Publication 2004/16

Proceedings of the Second International Symposium on the Management of Large Rivers for Fisheries

Sustaining Livelihoods and Biodiversity in the New Millennium
11 - 14 February 2003, Phnom Penh, Kingdom of Cambodia

Edited by Robin L. Welcomme and T. Petr

Volume 1


Table of Contents

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Fishing Gear Illustrations from:
Fishing Gears of the Cambodian Mekong
Compiled by: Deap Loeung, Peter Degen and Nicolaas van Zalinge
Illustrations and Layout by: Arijan Jansonius
©MRC 2003

For bibliographic purposes, please reference this publication as in the examples below:

For Volume I

Cowx I.G., Almeida O., Bene C, Brummett R., Bush S., Darwall W, Pittock J. & van Brakel M. (2004). Value of river fisheries. In: Proceedings of the Second International Symposium on the Management of Large Rivers for Fisheries Volume I. Welcomme R. and T. Petr, Eds., FAO Regional Office for Asia and the Pacific, Bangkok, Thailand. RAP Publication 2004/16, pp. 1-20.

For Volume II

Abell R., Thieme M.& Brenner B.L. (2004). Ecoregion conservation for freshwater systems, with a focus on large rivers. In: Proceedings of the Second International Symposium on the Management of Large Rivers for Fisheries Volume II. Welcomme R. and T. Petr, Eds., FAO Regional Office for Asia and the Pacific, Bangkok, Thailand. RAP Publication 2004/17, pp. 1-14.


The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations (FAO) and the Mekong River Commission (MRC) concerning the legal or constitutional status of any country, territory or sea area or concerning the delimitation of frontiers or boundaries.


All rights reserved Food & Agriculture Organization of the United Nations and Mekong River Commission. Reproduction and dissemination of material in this information product for educational or other non-commercial purposes are authorized without any prior written permission from the copyright holders provided the source is fully acknowledged. Reproduction of material in this information product for resale or other commercial purposes is prohibited without written permission of the copyright holders. Application for such permission should be addressed to the Aquaculture Officer, FAO Regional Office for Asia and the Pacific, Maliwan Mansion, 39 Phra Athit Road, Bangkok 10200, Thailand.

Images courtesy of the Mekong River Commission Fisheries Programme

© FAO & MRC 2004

Table of Contents

Origins of the symposium

Recommendations for action

Summary conclusions

Value of River Fisheries - Ian I.G., Cowx O., Almeida C., Bene R., Brummett S., Bush W., Darwall J., Pittock J. & M. van Brakel

Table 1: Different strategies for management of inland waters for fisheries in developed and developing countries (from Welcomme 2000, 2001, slightly modified)
Table 2: Socio-economic benefits of inland fisheries and impacts on inland fisheries (modified from Weithman 1999)
Table 3: Classification of environmental valuation techniques based on individual preferences (modified from Navrud 2001)

River Fisheries: Ecological Basis for Management and Conservation - A.H. Arthington, K. Lorenzen, B.J. Pusey, R. Abell, A.S. Halls, K.O. Winemiller, D.A. Arrington, E. Baran

People and Fisheries Management - Wolf Hartmann, Patrick Dugan, Simon Funge-Smith, Kent G., Hortle Blaise Kuemlangan, Kai Lorenzen, Gerd Marmulla, Niklas Mattson, Robin Welcomme

Table 1: Resource users, approaches and consequences (Uphoff 1998)
Table 2: Fishery paradigms, policy objectives and concepts (adapted from Charles 1992)
Table 3: Difference in management strategies

Information, Knowledge and Policy - D. Coates, T. Boivin, W.R.T. Darwall, R. Friend, P. Hirsch, A.F. Poulsen, R. Quirós, T.A.M. Visser & M. Wallace

Table 1: A sample range of states of river fisheries and the potential applicability of stock assessment based management approaches
Table 2: Contributions to this symposium by subjects related to Integrated Water Resources Management

The Present Status of the River Rhine with Special Emphasis on Fisheries Development - T. Brenner, A.D. Buijse, M. Lauff, J.F. Luquet, E. Staub

Table 1: Hydrological characteristics of the River Rhine
Table 2: The most important tributaries of the River Rhine
Table 3: Fish species in the River Rhine (Modified after IKSR 2002 a)
Table 4: Fish distribution in the river Rhine 1990-2000 (Modified after IKSR 2002 a)
Table 5: Number of fish species ascending in the fish pass in Iffezheim in the years 2000 - 2002. (Data from Association Saumon Rhin and Conseil Supérieur de la Pêche)

Rivers of the Lower Guinean Rainforest: Biogeography and Sustainable Exploitation - R.E. Brummett & G.G. Teugels

Table 1: Major rainforest river systems in the Lower Guinean icthyological province. Main tributaries are in parentheses. Alternative names are indicated with a slash. Data from: Hugueny (1989), Peyrot (1991a), Vivien (1991), Teugels, Reid & King (1992), Mahé & Olivry (1999).
Table 2: General patterns of fish family distribution across habitats and ecological niches within rainforest rivers. Habitats are modified from the system adopted by Lowe-McConnell (1975) based on the categories of Matthes (1964).

Status and Management of Fishery Resources of the Yangtze River - D. Chen, X. Duan, S. Liu, W. Shi

Table 1: The distribution of fish species along the Yangtze River

Human Impact on Rivers and Fish in the Ponto-Caspian Basin - B. Fashchevsky

Table 1: Morphometric and hydrographic characteristics of the Volga reservoirs
Table 2: Chemical composition of the Volga River water before and after the regulation of the Lower Volga (Tarasov & Beschetnova 1989)
Table 3: Numbers (millions) and catches (tonnes) of sturgeons in the Caspian Sea (Lukyanenko 2002)
Table 4: Fish catches (tonnes) in the rivers of the Caspian Sea

Review of the Present State of the Environment, Fish Stocks and Fisheries of the River Niger (West Africa) - R. Laë, S. Williams, A. Malam Massou, P. Morand & O. Mikolasek

Table 1: Climatic characteristics of the whole Niger basin (temperature T, relative humidity U and inter-annual precipitations).

A Review of the Ganges Basin: Its Fish and Fisheries - A.I. Payne, R. Sinha, H.R. Singh, S. Huq

Table 1: Hydrologiccal data for various sites along the Ganges basin by altitude
Table 2: Changes in catch composition downstream from Allahabad between 1958 and 1994
Table 3: Annual catch (tonnes) records from Padma River (Lower Ganges) upper and lower combined. From Department of Fisheries Annual Reports, Bangladesh. For explanation of categories, see text.

The Plata River Basin: International Basin Development and Riverine Fisheries - R. Quirós

Table 1: Total country area and total country population in the basin (from Barberis 1990).
Table 2: National and basin gross national products (GNP) (modified from Barberis 1990).
Table 3: Energy consumption in the Plata river basin (source World Bank, 1998).
Table 4: Flood pulse amplitude in the middle Parana river (Santa Fe City) for non-developed and developed river periods.
Table 5: Main fish species taken by fisheries in the Plata river basin.
Table 6: Catch per unit effort in the Parana River below the Itaipu dam for the 1982-1984 period (from Quiros & Cuch (1990) compared with catch per unit effort for Brazilian reservoirs situated in the upper Parana basin (from Petrere & Agostinho (1993) and Petrere et al. (2002)). CPUE, catch per unit effort (kg/fisher/day).

Ecological Status and Problems of the Danube River and its Fish Fauna: A Review - F. Schiemer, G. Guti, H. Keckeis & M. Staras

Table 1: Comparison of the present state of the fish fauna of the Danube in Austria, Hungary and Romania. Occ.= Occurrence, Cat.= Category: EX = extinct; exotic; Imm. = Immigrants; CE = critically endangered; E = endangered; VU = vulnerable; DD = data deficient
Table 2: Studies on the ecology and eco-physiology of critical stages of Danubian fish

Status and Management of Mississippi River Fisheries - H.L. Schramm Jr.

Table 1: Distribution and abundance of fishes in the headwaters (HW), upper (UMR), or open river (OR) segments of the Mississippi River. Fish are resident in the Mississippi River unless noted otherwise (Residence). Data were compiled from Fremling et al. (1989), Baker et al. (1991), Pitlo et al. (1995), and Warren et al. (2000). Fish categorized as strays by Fremling et al. (1989) and marine fishes collected only in the lower 150 km of the Mississippi River are excluded. Backwater dependent or riverine dependent indicates those taxa that are dependent on backwater or riverine conditions to complete their life cycle. Probable zone is the area of the river from which the fish have been or are likely to be collected.
Table 2: Fish biomass estimates in Mississippi River habitats. Values in parentheses are standard error, sample size.
Table 3: Trends in commercial harvest (metric tons) of fish in the upper Mississippi River and Tennessee waters of the lower Mississippi River. N is sample size (number of years).

The Mekong River System - N. van Zalinge, P. Degen, C. Pongsri, S. Nuov, J.G. Jensen, V.H. Nguyen, X. Choulamany

Table 1: Estimated annual consumption of freshwater fish products, including other aquatic animals in the lower Mekong basin by country and by source, in 2000, expressed in whole fresh weight equivalents (as recalculated by Hortle & Bush 2003)