全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

Long-Term Records of Fisheries Yield and Stocking in Kaptai Reservoir (Bangladesh)
—Evidence for Regime Shift?

DOI: 10.4236/oalib.1112682, PP. 1-18

Subject Areas: Hydrology

Keywords: Regime Shift, Reservoir Ecosystem, Supplemental Stocking, Major Carp, Clupeid Species

Full-Text   Cite this paper   Add to My Lib

Abstract

Regime shifts, abrupt switches between alternate states of ecosystems, have repeatedly been described for marine fisheries, but little evidence exists for regime shifts in freshwater fisheries systems. A 41-year long time series (from 1965 until 2005) of fisheries yielded 17 fish species, dried fish and miscellaneous species from Kaptai reservoir, Bangladesh, which were analyzed to detect major trends in fish assemblage composition. Annual rates of supplemental stocking were included to elucidate whether stocking modified fish assemblage structure. Indian major carp species (ruhu, catla, mrigal, kalibaus), which dominated initially, were replaced by pelagic clupeid species (chapila, kechki) after about 20 years. Ordination of time series by nonmetric multidimensional scaling indicated smooth transitions between 1965 and 1980, but demonstrated rather drastic jumps between 1980 and 1986. Afterward, the system’s succession became continuous again, indicating that a regime shift may have occurred between 1980 and 1986. Massive supplemental stocking with major carp fingerlings (ruhu, catla, mrigal) did not reverse the situation, but rather seemed to accelerate the switch. Drastic changes in fish assemblage composition coincided with low water levels in the reservoir in the previous years, thus indicating that blocked access to river spawning grounds due to low water levels may have contributed to the decline of major carp. Accordingly, the regime shift may have been caused by recruitment over-fishing of target fish species (mainly major carp), limitation of natural reproduction by low connectivity of the reservoir to river spawning grounds, failure of supplemental stocking programmes, competition between native and invasive species and ineffectiveness in implementing existing fishing regulations. Perspectives for a more efficient management of these important freshwater fisheries are discussed.

Cite this paper

Ahmed, K. K. U. and Mehner, T. (2024). Long-Term Records of Fisheries Yield and Stocking in Kaptai Reservoir (Bangladesh) —Evidence for Regime Shift?. Open Access Library Journal, 11, e2682. doi: http://dx.doi.org/10.4236/oalib.1112682.

References

[1]  Lluch-Belda, D., Lluch-Cota, D.B., Hernández-Vázquez and Salinas-Zavala, C.A. (1992) Sardine Population Expansion in Eastern Boundary Systems of the Pacific Ocean as Related to Sea Surface Temperature. South African Journal of Marine Sci-ence, 12, 147-155. https://doi.org/10.2989/02577619209504698
[2]  Scheffer, M., Carpenter, S., Foley, J.A., Folke, C. and Walker, B. (2001) Catastrophic Shifts in Ecosystems. Nature, 413, 591-596. https://doi.org/10.1038/35098000
[3]  Carpenter, S.R. (2003) Regime Shifts in Lake Ecosystems: Pattern and Variation. International Ecology Institute.
[4]  Jeppesen, E., Søndergaard, M., Pedersen, A.R., Jürgens, K., Strzelczak, A., Lauridsen, T.L., et al. (2007) Salinity Induced Regime Shift in Shallow Brackish Lagoons. Ecosystems, 10, 48-58. https://doi.org/10.1007/s10021-006-9007-6
[5]  Minobe, S. (2000) Spatio-Temporal Structure of the Pentadecadal Variability over the North Pacific. Progress in Oceanography, 47, 381-408. https://doi.org/10.1016/s0079-6611(00)00042-2
[6]  Kawasaki, T. (2002) Climate Change, Regime Shift and Stock Management. Fisheries science, 68, 148-153. https://doi.org/10.2331/fishsci.68.sup1_148
[7]  Peterson, W.T. and Schwing, F.B. (2003) A New Climate Regime in Northeast Pacific Ecosystems. Geophysical Research Letters, 30, Article No. 1896. https://doi.org/10.1029/2003gl017528
[8]  Collie, J.S., Richardson, K. and Steele, J.H. (2004) Regime Shifts: Can Ecological Theory Illuminate the Mechanisms? Progress in Oceanography, 60, 281-302. https://doi.org/10.1016/j.pocean.2004.02.013
[9]  Kasai, H. and Ono, T. (2007) Has the 1998 Regime Shift Also Oc-curred in the Oceanographic Conditions and Lower Trophic Ecosystem of the Oyashio Region? Journal of Oceanography, 63, 661-669. https://doi.org/10.1007/s10872-007-0058-x
[10]  Francis, R.C., Hare, S.R., Hollowed, A.B. and Wooster, W.S. (1998) Effects of Interdecadal Climate Variability on the Oceanic Ecosystems of the NE Pacific. Fisheries Oceanography, 7, 1-21. https://doi.org/10.1046/j.1365-2419.1998.00052.x
[11]  McFarlane, G.A., King, J.R. and Beamish, R.J. (2000) Have There Been Recent Changes in Climate? Ask the Fish. Progress in Oceanography, 47, 147-169. https://doi.org/10.1016/s0079-6611(00)00034-3
[12]  Clark, W.G. and Hare, S.R. (2002) Effects of Climate and Stock Size on Recruitment and Growth of Pacific Halibut. North American Journal of Fisheries Management, 22, 852-862. https://doi.org/10.1577/1548-8675(2002)022<0852:eocass>2.0.co;2
[13]  King, J. (2005) Coherent Regional Responses. In: King, J.R., Ed., Report of the Study Group on Fisheries and Ecosystem Responses to Recent Regime Shifts, PICES Scientific Report No. 28, North Pacific Marine Organization (PICES), 37-50.
[14]  Holliday, N. (2001) Is There a Connection between High Transport of Water through the Rockall Trough and Ecological Changes in the North Sea? ICES Journal of Marine Sci-ence, 58, 270-274. https://doi.org/10.1006/jmsc.2000.1008
[15]  Omori, M. and Kawasaki, T. (1995) Scrutinizing the Cycles of Worldwide Fluctuations in the Sardine and Herring Populations by Means of Singular Spectrum Analysis. Bulletin of Japanese Society for Fisheries and Oceanography, 59, 361-370.
[16]  Sakurai, Y. (2000) Changes in Inferred Spawning Areas of Todarodes pacificus (Cephalopoda: Ommastrephidae) Due to Changing Environmental Conditions. ICES Journal of Marine Science, 57, 24-30. https://doi.org/10.1006/jmsc.2000.0667
[17]  Tian, Y., Akamine, T. and Suda, M. (2002) Long-Term Variability in the Abundance of Pacific Saury in the Northwestern Pacific Ocean and Climate Changes during the Last Century. Bulletin of Japanese Society of Fisheries and Oceanography, 66, 16-25.
[18]  Yatsu, A. (2002) Monitoring of Pelagic Fish Resources in the Area around Japan. Kaiyo Monthly, 34, 799-802. (In Japanese)
[19]  Worm, B. and Myers, R.A. (2003) Meta-Analysis of COD-Shrimp Interactions Reveals Top-Down Control in Oceanic Food Webs. Ecology, 84, 162-173. https://doi.org/10.1890/0012-9658(2003)084[0162:maocsi]2.0.co;2
[20]  Bundy, A. (2005) Structure and Functioning of the Eastern Scotian Shelf Ecosystem before and after the Collapse of Groundfish Stocks in the Early 1990s. Canadian Journal of Fisheries and Aquatic Sciences, 62, 1453-1473. https://doi.org/10.1139/f05-085
[21]  Frank, K.T., Petrie, B., Choi, J.S. and Leggett, W.C. (2005) Trophic Cascades in a Formerly Cod-Dominated Ecosystem. Science, 308, 1621-1623. https://doi.org/10.1126/science.1113075
[22]  Jackson, J.B.C., Kirby, M.X., Berger, W.H., Bjorndal, K.A., Botsford, L.W., Bourque, B.J., et al. (2001) Historical Overfishing and the Recent Collapse of Coastal Ecosystems. Science, 293, 629-637. https://doi.org/10.1126/science.1059199
[23]  Savenkoff, C., Castonguay, M., Chabot, D., Hammill, M.O., Bourdages, H. and Morissette, L. (2007) Changes in the Northern Gulf of St. Lawrence Ecosystem Estimated by Inverse Modelling: Evi-dence of a Fishery-Induced Regime Shift? Estuarine, Coastal and Shelf Science, 73, 711-724. https://doi.org/10.1016/j.ecss.2007.03.011
[24]  Welcomme, R.L. (2001) Inland Fisheries: Ecology and Management. Blackwell, 358 p.
[25]  Ahmed, K.K.U., Haldar, G.C., Saha, S.B. and Paul, S.K. (1994) Studies on the Primary Production in Kaptai Reservoir. Bangladesh Journal of Zoology, 22, 69-77.
[26]  Hye, M.A. and Alamgir, M. (1992) Investigation on the Natural Spawning of Carps in Lake Kaptai. Bangladesh Journal of Zoology, 20, 27-33.
[27]  Haldar, G.C., Mazid, M.A. and Ahmed, K.K. (1992) Limnology and Primary Production of Kaptai Lake, Bangladesh. Reservoir Fisheries in Asia. Proceedings of the 2nd Asian Reservoir Fisheries Workshop, Hangzhou, 15-19 October 1990, 2-11.
[28]  Aquatic Research Group (ARG) (1986) Hydrobiology of the Kaptai Reservoir. University of Chittagong, FAO/UNDP Final Report No. DP/BGD/79/015/FI, 192.
[29]  Azadi, M.A. (1985) Hydrological Conditions Influencing the Spawning of Major Carps in the Halda River, Chitta-gong, Bangladesh. Bangladesh Journal of Zoology, 13, 163-172.
[30]  Chowdhury, S.C. and Mazumdar, A. (1981) Limnology of Lake Kaptai-1: Physicochemical Features. Bangladesh Journal of Zoology, 9, 59-72.
[31]  Haldar, G.C., Ahmed, K.K.U., Alamgir, M., Akhter, J.N. and Rahman, M.K. (2000) Chapter 12. Fish and Fisheries of Kaptai Reservoir, Bangladesh. In: Cowx, I.G., Ed., Management and Ecology of Lake and Reservoir Fisheries, Fishing News Books, Blackwell Science, 145-158.
[32]  Ahmed, K.K.U., Hambrey, J.B. and Rahman, S. (2001) Trends in Interannual Yield Variation of Reservoir Fisheries in Bangladesh, with Special Reference to Indian Major Carps. Lakes & Reservoirs: Science, Policy and Management for Sustainable Use, 6, 85-94. https://doi.org/10.1046/j.1440-1770.2001.00134.x
[33]  Ahmed, K.K.U. and Hambrey, J.B. (2005) Studies on the Fish Catch Efficiency of Different Types of Fishing Gear in Kaptai Reservoir, Bangladesh. Lakes & Reservoirs: Science, Policy and Management for Sustainable Use, 10, 221-234. https://doi.org/10.1111/j.1440-1770.2005.00280.x
[34]  Ahmed, K.K.U., Rahman, S. and Ahammed, S.U. (2006) Man-aging Fisheries Resources in Kaptai Reservoir, Bangladesh. Outlook on Agriculture, 35, 281-289. https://doi.org/10.5367/000000006779398281
[35]  Ali, L. (1985) Proceedings of the National Conference on Fisheries Development in Bangladesh. 15-19, January 1985. Sponsored by Fisheries and Livestock Division. Ministry of Agriculture, 41.
[36]  Ahmed, K.K.U. (1999) Options for the Management of Major Carp Fishery in the Kaptai Reservoir, Bangladesh. Ph.D. Dissertation, School of Environment, Re-sources and Development, Asian Institute of Technology, i-xxiii 298 p.
[37]  BFRI-RSS (1993) Population Dynamics and Stock Assessment Studies on Kaptai Lake. Annual Progress Report (1991-1992), BFRI-RSS.
[38]  Andersen, T., Carstensen, J., Hernández-García, E. and Duarte, C.M. (2009) Ecological Thresholds and Regime Shifts: Approaches to Identification. Trends in Ecology & Evolution, 24, 49-57. https://doi.org/10.1016/j.tree.2008.07.014
[39]  McCune, B. and Mefford, M.J. (1999) PC-ORD. Multivariate Analysis of Ecological Data, Version 4. MjM Software Design.
[40]  Jenkins, R.M. (1985) Final Report on the Planning, Implementation and Follow-Up Activities Associated with the Survey of Fishery Management of Kaptai Lake Conducted by the Aquatic Re-search Group. University of Chittagong, 7.
[41]  Gulland, J.A. (1983) Fish Stock Assessment: A Manual of Basic Methods. John Wiley and Sons Ltd., 223.
[42]  Ahmed, K.K.U. and Saha, S.B. (1996) Length-Weight Relationships of Major Carps in Kaptai Lake, Bangladesh. NAGA, ICLARM Quarterly April, 28.
[43]  Dewan, S. (2000) Stock Assessment and Population Dynamics of Commercially Important Fishes in Kaptai Lake. Consultancy Report on Population Dynamics. BFRI & BARC, Ag-ricultural Research Management Project (ARMP) Technical Assistance, Winrock International, 32-72.
[44]  Welcomme, R.L. (1970) Studies on the Effects of Abnormally High Water Levels on the Ecology of Fish in Certain Shallow Regions of Lake Victoria. Journal of Zoology, 160, 405-436. https://doi.org/10.1111/j.1469-7998.1970.tb03090.x
[45]  Silva, S.S.D. (1985) Observations on the Abundance of the Exotic Cichlid Sarotherodon mossambicus (Peters) in Relation to Fluctuations in the Water-Level in a Man-Made Lake in Sri Lanka. Aquaculture Research, 16, 265-272. https://doi.org/10.1111/j.1365-2109.1985.tb00315.x
[46]  Jhingran, A.G. (1992) Recent Advances in Reservoir Fisheires Management in India. Reservoir Fisheries of Asia, Proceedings of the 2nd Asian Reservoir Fisheries Workshop, Hangzhou, 15-19 October 1990, 158-175.
[47]  BFRI-RSS (2000) Studies of Production Potentiality and Management of Fisheries of Kaptai Lake. Annual Progress Report (1999-2000), BFRI-RSS.
[48]  Walburg, C.H. (1976) Changes in the Fish Population of Lews and Clark Lake, 1956-1974, and Their Relation to Water Management and the Environment. U.S. Fish and Wildlife Service, Research Report, 79 p.
[49]  Pawaputanon, O. (1986) Fisheries and Fishery Management of Large Reservoirs in Thailand. In: Maclean, J.L., Dizon, L.B. and Hosillos, L.V., Eds., The First Asian Fisheries Forum, Asian Fisheries Society, 389-392.
[50]  Duangsawasdi, M. (1992) Post-Impoundment Studies on Aquatic Ecology and Fisheries in Bhumibol and Sirikit Reservoirs, Thailand. Reservoir Fisheries of Asia: Proceedings of the 2nd Asian Reservoir Fisheries Workshop, Hang-zhou, 15-19 October 1990, 104-110.
[51]  Fernando, C.H. and Holčík, J. (1991) Fish in Reservoirs. Internationale Revue der gesamten Hydrobiologie und Hydrographie, 76, 149-167. https://doi.org/10.1002/iroh.19910760202
[52]  Fernando, C.H. (1998) Lacustrine Fishes and Their Role in Asian Reservoirs. Department of Biology, University of Waterloo, 26.
[53]  Petrere, M. (1996) Fisheries in Large Tropical Reservoirs in South America. Lakes & Reservoirs: Science, Policy and Management for Sustainable Use, 2, 111-133. https://doi.org/10.1111/j.1440-1770.1996.tb00054.x
[54]  Ahmed, K.K.U., Alamgir, M. and Haldar, G.C. (2002) Pen Fish Culture in Lake-Valley as a New Production System of Kaptai Reservoir, Bang-ladesh. In: Islam, Z., Ed., Proceedings of the 2nd ANR Agricultural Conference, ICMH, 20-126.
[55]  Ahmed, K.K.U. and Ham-brey, J.B. (1999) Brush Shelter: A Recently Introduced Fishing Method in the Kaptai Reservoir Fisheries in Bangladesh. NAGA ICLARM Quarterly, 22, 20-23.
[56]  Sandercock, F.K. (1966) Chittagong Hill Tracts Soil and Land Use Survey, Volume 4: Fisheries (Canadian Colombo Plan Project F-475). East Pakistan Agricultural Development Corpora-tion.
[57]  Bhukaswan, T. and Chookajorn, T. (1988) Reservoir Fisheries Management in Thailand. Reservoir Fishery Man-agement and Development in Asia, Proceedings of a workshop, Kathmandu, 23-28 November 1987, 154-157.
[58]  Fernando, C.H. (1993) Impact of Sri Lankan Reservoirs, Their Fisheries, Management and Conservation. In: Erdelen, W., Preu, C., Ishwaran, N. and Madduma Bandara, C.M., Eds., Ecology and Landscape Management in Sri Lanka, Margraf Scientific Books, 351-367.
[59]  Sugunan, V.V. (1997) Fisheries Management of Small Water Bodies in Seven Countries in Africa, Asia and Latin America. FAO Fisheries, Circular 933, 148.
[60]  Sreenivasan, A. (1984) Influence of Stocking on Fish Production in Reservoirs of In-dia. Fisheries Chimes, 13, 18-21.

Full-Text


Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133