Programme of International Symposium on Erosion and sediment yield : Global and Regional Perspectives , Exeter, Great Britain, 15-19 July, 1996

Monday 15 July

Registration 08.15 - 09.15, Peter Chalk Centre


Chairperson : D. Walling

09.15 - 10.25   Introduction

09.25 - 09.40   F. Fournier - UNESCO IHP activities in the field of erosion and sedimentation


Chairperson : D. Walling 09.40 - 10.05 D.E. Walling & B.W. Webb - Erosion and sediment yield : a global view 10.05 - 10.30 W. Ludwing & J-L. Probst - A global modelling of the climatic, morphological, and lithological control of river sediment discharges to the oceans 10.30 - 10.45 E. Ongley - The United Nations GEMS/Water Programme and the global sediment agenda COFFEE 10.45 - 11.15 REGIONAL AND NATIONAL PERSPECTIVES Chairperson : D. Walling 11.15 - 11.40 D. Archer - Suspended sediment yield in the Nairobi area of Kenya and environmental controls 11.40 - 12.05 A.G. Brown et al. - Multi scale estimates of erosion and sediment yields in the Upper Tana Basin, Kenya 12.05 - 12.30 J.L. Guyot et al. - Dissolved solids and suspended sediment yields in the Rio Madeira basin, from the Bolivian Andes to the Amazon 12.30 - 12.55 F. Ozturk - Suspended sediment yields of rivers Turkey LUNCH 13.00 - 14.15 Chairperson : F. Fournier 14.15 - 14.40 J. Bogen - Erosion and sediment yield in Norwegian rivers 14.40 - 15.05 D.N. Collins - Sediment transport from glacierized basins in the Karakoram mountains 15.05 - 15.30 A.M. Gurnell et al. - Suspended sediment yield from glacier basins 15.30 - 15.55 B. Hasholt - Sediment transport in Greenland TEA 16.00 - 16.30 Chairperson : F. Fournier 16.30 - 16.55 N.N. Bobrovitskaya et al. - Discharge and yields of suspended sediment in the Ob and Yenisey Rivers of Siberia 16.55 - 17.20 M. Stone & H. Saunderson - Regional patterns of sediment yield in the Laurentian Great Lakes basin 17.20 - 17.45 J. Branski & K. Banasik - Sediment yields and denudation rates in poland RECEPTION 18.00, Peter Chalk Centre Hall 2 Tuesday 16 July REGIONAL AND NATIONAL PERSPECTIVES (continued) Chairperson : C. Onstad 09.00 - 09.25 R.J. Wasson et al. - Rates of erosion and sediment transport in Australia 09.25 - 09.50 D.M. Hicks et al. - Variation of suspended sediment yields around New Zealand : the relative importance of rainfall and geology 09.50 - 10.15 J. McManus & R.W. Duck - Regional variations of fluvial sediment yield in eastern Scotland 10.15 - 10.40 P. White et al. - Sediment yield estimates from reservoir studies : an apprisal of variability in the southern Pennines of the UK COFFEE 10.45 - 11.15 Chairperson : C. Onstad 11.15 - 11.40 K.D. Sharma - Soil erosion and sediment yield in the Indian arid zone. 11.40 - 12.05 V. Subramanian - The sediment load of Indian rivers - an update. 12.05 - 12.30 D.L. Higgitt & X. Lu - Patterns of sediment yield in the Upper Yangtze Basin, China. 12.30 - 12.55 D. Dai & Y. Tan - Soil erosion and sediment yield in the upper Yangtze River basin. LUNCH 13.00 - 14.15 Chairperson : B. Hasholt 14.15 - 14.40 A. Gupta - Erosion and sediment yield in South East Asia : a regional perspective. 14.40 - 15.05 F.S. Lai et al. - Sediment yield from selected catchments in Peninsular Malaysia. 15.05 - 15.30 S. White - Erosion, sediment delivery and sediment yield paterns in the Phillippines. 15.30 - 15.55 M.R. Peart - Patterns of erosion and sediment production in Hong Kong. TEA AND POSTERS 16.00 - 17.30 Wednesday 17 July SOIL EROSION PERSPECTIVES Chairperson : B. Hasholt 09.00 - 09.25 J.W. Poesen et al. - Contribution of fully erosion to sediment production on cultivated lands and rangelands. 10.15 - 10.40 A.D. Nicks & J.R. Williams - Regional analysis of erosion from agricultural fields using global change scenarios. 09.25 - 09.50 R.J. Loughran & G.L. Elliott - Rates of soil erosion in Australia determined byb the caesium-137 technique : a national reconnaissance survey. 09.50 - 10.15 L. Oygarden - Erosion and surface runoff in small agricultural catchments. COFFEE 10.45 - 11.15 SEDIMENT SYNAMICS IN CONTRASTING ENVIRONMENTS Chairperson : W. Froehlich 11.15 - 11.40 H.M. Sichingabula - Estimation of contemporary suspended sediment loads of the Kafue and Luangwa Rivers, Zambia. 11.40 - 12.05 I.D.L. Foster et al. - Sediment-associated phosphorus transport in the Warwickshire River Avon, UK. 12.05 - 12.30 E.L. Petticrew - Sediment aggregation and transport in nothern interior British Columbia streams. 12.30 - 12.55 S. Kostadinov & S. Markovic - Soil erosion and effects of erosion control works in the torrential drainage basins of Southeast Serbia. LUNCH 13.00 - 14.15 EXCURSION 14.45 - 22.00, Departs from Prince of Wales Road at junction of St Germans Road. Thursday 18 July SEDIMENT DYNAMICS IN CONTRASTING ENVIRONMENTS (continued) Chairperson : L. Olive 09.00 - 09.25 D.H. De Boer & G. Crosby - Specific sediment yield and drainage basin scale. 09.25 - 09.50 V.N. Golosov - Redistribution of sediments within small catchments of the temperate zone. 09.50 - 10.15 P.J. Wallbrink et al. - The contribution of subsoil to sediment yield in the Murrumbidgee River basin, NSW, Australia. 10.15 - 10.40 H.K. Watson et al. -The distribution of erosion in the Mfolozi drainage basin - implications for sediment yield control. COFFEE 10.45 - 11.15 Chairperson : L. Olive 11.15 - 11.40 J.D. Milliman et al. - Catastrophic discharge of fluvial sediment to the ocean: evidence of Jokulhlaaups events in the Alsek Sea Valley, Southeast Alaska (USA). 11.40 - 12.05 W.D. Erskine & M.J. Saynor - Effects of catastrophic floods on sediment yields in southeastern Australia. 12.05 - 12.30 D.M. Powell et al. - Bed load as a component of sediment yield from a semiarid watershed of the nothern Negev. 12.30 - 12.55 T. Bednarczyk & M. Madeyski - Erosional processes in small Carpathian watersheds. LUNCH 13.00 - 14.15 TRENDS IN SEDIMENT YIELD Chairperson : T. Quine 14.15 - 14.40 N.N. Bobrovitskaya - Long-term variations in mean erosion and sediment yield from the rivers of the former Soviet Union. 14.40 - 15.05 D.M. Lawler & L.J. Wright - Sediment yield decline and climate change in southern Iceland. 15.05 - 15.30 U. Rozin & A.P. Schick - Land-use change, conservation measures and stream channel response in the Mediterranean/ semiarid transition zone: Nahal Hoga, Southern Coastal Plain, Israel. 15.30 - 15.55 A. Sidorchuk - Sediment budget change in the fluvial system of the central part of the Russian plain due to human impact. TEA 16.00 - 16.30 Chairperson : T. Quine 16.30 - 16.5 A.G. Greer et al. - Long term natural forest management and land use change in a developing tropical catchment, Sabah, Malaysia. 16.55 - 17.20 I. Douglas - The impact on land use changes, especially logging, shifting cultivation, mining and urbanisation, on sediment yields in humid tropical South-East Asia: a review with special reference to Borneo. 17.20 - 17.45 W. Summer et al. - Trends in soil erosion and sediment yield in the alpine basin of the Austrian Danube. CONFERENCE BANQUET 19.00,Departs from Prince of Wales Road at junction of St Germans Road. Friday 19 July SEDIMENTATION PROBLEMS AND SEDIMENT MANAGEMENT Chairperson : N. Al Ansari 09.00 - 09.25 M. Demissie - Patterns of erosion and sedimentation in the Illinois River basin. 09.25 - 09.50 A. Lahlou - Environmental and socio-economic impacts of erosion and sedimentation in North Africa countries. 09.50 - 10.15 A. Lajczak - Reservoir sedimentation problems in the Vistula River basin, Poland. 10.15 - 10.40 W.H. Renwick - Continent-scale reservoir sedimentation patterns in the United States. COFFEE 10.45 - 11.15 Chairperson : N. Al Ansari 11.15 - 11.40 W.D. Erskine & M.J. Saynor - Success of soil conservation works in reducing soil erosion rates and sediment yields in central eastern Australia. 11.40 - 12.05 U.C. Kothyari - Erosion and sedimentation problems in India. 12.05 - 12.30 J. Mou - Recent studies of the role of soil conservation in reducing erosion and sediment yield in the loess plateau area of the Yellow River basin. 12.30 - 12.55 J. Adinarayana - Prioritization of basins on a slit yield index - an integrated approach. LUNCH 13.00 - 14.15 Chairperson : B. Webb 14.15 - 14.40 J.B. Ellis - Sediment yield and BMP control strategies in urban catchments. 14.40 - 15.05 H.M. Habersack - Lack and surplus of sediments being transported by river systems. 15.05 - 15.30 F.H. Weiss - Sediments monitoring, long-term loads, balances and management strategies in Southern Bavaria. 15.30 - 15.55 J.N. Nayak - Sediment mangement of the Kosi River in Nepal. TEA 16.00 - 16.30 CLOSING DISCUSSION 16.30 - 17.00 Chairpersons : F. Fournier, D. Walling, B. Webb.



The workshop is planned to be structured into eight thematic sessions, four Working Group sessions and four general plenary sessions. Each session deals with topics that cut across BAHC s and GCTE s interests. The outcome of each thematic block, for which Working Groups are suggested to be established, should be

(a) to identify the specific research problems to be addressed;

(b) to formulate an implementation plan for the studies.

For each thematic session one or several speaker(s) have been identified. They are requested to leave 5 minutes for discussion at the end of the time allocated for their presentations. Other scientists (specifically those representing case studies) will be asked to make shortcontributions during the discussion. Case studies should be used to highlight scientific questions and identify potential appracheds to answering them.


Saturday, 30 March 1996

Session 1 : Opening session and introduction

9.00    Welcome addresses:
        A. Becker/W. Steffen(IGBP)
        S. Chalise (ICIMOD)

        Adoption of the Agenda (A. Becker)
        Domestic arrangements (S. Chalise)

9.30    Workshop introduction: Rationale for coupled hydrological-ecological studies in
        mountainous regions (Steffen/Becker)  
10.00   Mountain ecosystems in a changing world (Korner)

10.30   Coffee break

Session 2: Sustainable development in mountainous regions:challenges for hydrological and
           ecological research.

11.00   Changes in mountain hydrology and ecosystems: the human dimension (Price)
11.30   Land use change pressures, hazards and hydrological and ecological responses to
        global change (Singh)
12.00   General discussion

12.30   Lunch

Session 3: Atmospheric driving forces of hydrological and ecological processes in mountainous
           regions and their predictability with respect to global change.

14.00   Use of coupled mesoscale atmospheric and land-surface process modelling to derive
        precipitation along altitudinal gradients (Avissar)
14.30   Design and use of ground-based networks, modelling and remote sensing to assess the
        areal precipitation pattern in mountainous regions (Sevruk)
15.00   Altitudinal variation of UV-B radiation (Blumthaler)
15.20   Distribution of winter and summer precipitation over the Himalayan region (Bahadur)

15.40   Coffee break.

Session 4: Hydrological and ecological processes and their interaction in mountainous terrain

Sub-session 4.1: Process studies at the patch scale along altitudinal gradients

16.10   Evapotranspiration along altitudinal gradients as a function of topography, land cover
        and other land surface characteristics (Lang)
16.40   Crop and biomass modelling in mountainous terrain: considerations, problems and
        challenges (Schulze)
17.10   Altitudinal distribution patterns of vascular plants and their relations to local/regional
        climate regimes (Holten)
17.30   General discussion

18.00   Adjourn

Sunday, 31 March 1996

Sub-session 4.2: Studies at hillslope and catchment scales

08.30   Experimental studies coupled with modelling to identify water pathways and
        residence times (Hermann).
08.55   Proposed BAHC related activities in India (Subramanian)
09.20   Landscape assessment of hydrology and nutrient flux in an agrarian watershed of the
        Sikkim Himalaya (Rai)

Session 5: Identification and prediction of global change impacts on hydrological and ecological
        processes in mountainous terrain.

Sub-session 5.1: Long-term shifts of ecotones

09.45   Long-term shifts of alpine ecotones, with special reference to the alpine/nival ecotone
10.10   Use of snow line data to assess snow accumulation, precipitation and runoff in high
        mountain systems (krenke)

10.35   Coffee break

Sub-session 5.2: Global change impacts on hydrology, water resources and ecosystem function 

11.00   High mountain aquatic ecosystems as indicators of environmental variability and
        change (Hanselmann)
11.25   Climate Change Impacts on the Hydrology of the Thur/Rhine River Basin (Lang).
11.50   Form and functional changes in mountain plants with changing climatic conditions
12.15   General discussion

12.30   Lunch

14.00   Global ecoregional gradient baseline studies in the humid tropics: The CIFOR Forest
        Ecosystem Management Project (Gillison).
14.25   CO2 and temperature in relation to wheat (Abrol)
14.50   The influence of elevated CO2 on high mountain ecosystems (Korner)
15.00   Hypload lowland linkage in water & sediment discharge (N.R.K. Lemal)

Session 6: Scaling, regionalization, and large-scale integration

15.15   Multiscale modelling and the nested drainage basin approach (Becker)

15.40   Coffee break

16.10   Performance of patch models of ecosystem dynamics at single sites, along
        altitudinal gradients, and in mountain landscapes (Bugmann)

16.35   Scale issues and land-use change: the challenge of integrating biophysical and
        social science data (Graumlich)
16.55   Assessment of land use change and the need for transect studies (Adhikary)

17.10   General discussion

17.30   Definition and initial meeting of Working Groups (WGs)

18.00   Adjourn

Monday, 1 April 1996

08.30   WG Session 1

10.30   Coffee break
11.00   WG Session 2

12.30   Lunch

Session 7: Design of combined hydrological-ecological studies along altitudinal gradients and
           in research catchments in mountainous regions

14.00   Experimental design of ecological and hydrological studies in mountain
        research catchments (Bowmann)
14.30   Requirements for long-term ecological studies in mountainous regions

15.00   General discussion

15.30   Coffee break

16.00   WG session 3

17.40   Adjourn

DINNER 20.00 Sherpa Hotel

Tuesday, 2 April 1996

08.30   Plenary meeting to present and discuss results of the three WG sessions (WG
        chairs or rapporteurs) and to decide on the further proceeding.

10.30   Coffee break

11.00   Working Group session 4

12.30   Lunch

14.00   Presentation and finalization of the Draft Programme Proposal and discussion.

15.30   Coffee break

16.00   Completion of the work in groups

17.00   Final plenary meeting and closing of the workshop

17.50   Adjourn


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