Abstract
Biotic and abiotic factors that influence the avian distribution in a dry zone wetland was investigated by studying the distribution of Asian Openbill (Anastomus oscitans), Cotton Pygmy-goose (Nettapus coromandelianus) and Pheasant-tailed Jacana (Hydrophasianus chirurgus) in Anavilundawa Ramsar sanctuary in Sri Lanka in 2006. Their distribution was recorded in Anavilundawa, Suruwila and Maiyawa reservoirs, their catchments and respective paddy fields, through line transects. The floral cover of surface water was recorded by floating quadrates. Water lily (Nymphea spp.) was the dominant flora in Anavilundawa reservoir, invasive water hyacinth (Eichhornia crassipes) in Suruwila reservoir and a native lotus (Nelumbo nucifera) in Maiyawa reservoir, respectively. Anavilundawa area had a higher distribution of birds than in the other two areas. Among the three species observed, Asian Openbill distribution was mainly restricted to Anavilundawa whereas Pheasant-tailed Jacana was present in all three areas. Nesting of Asian Openbill occurred only in Anavilundawa while nesting of Pheasant-tailed Jacana was only observed in Maiyawa. Among the three species recorded, Cotton Pygmy-goose numbers were the least. Asian Openbill preferred dead trees and trees with no leaves for nesting and perching over live trees. It is concluded that the spread of invasives such as Water hyacinth and Salvinia (Salvinia molesta) forming mats over surface water have reduced the abundance of habitat specialists like Cotton Pygmy-goose.
Similar content being viewed by others
References
Begon M, Townsend CR, Harper JL (2006) Ecology, 4th edn. Blackwell Publishing Ltd., UK
Benoit LK, Askins RA (1999) Impact of the spread of Phragmites on the distribution of birds in Connecticut tidal marshes. Wetlands 19:194–208
Blossey B, Skinner LC, Taylor J (2001) Impact and management of purple loosestrife (Lythrum salicaria) in North America. Biodivers Conserv 10:1787–1807. doi:10.1023/A:1012065703604
Brockerhoff EG, Ecroyd CE, Leckie AC, Kimberley MO (2003) Diversity and succession of adventive and indigenous vascular understorey plants in Pinus radiata plantation forests in New Zealand. For Ecol Manage 185:307–326. doi:10.1016/S0378-1127(03)00227-5
Ceylon Bird Club Reports of Annual Bird Counts (1986–2005) Ceylon Bird Club, Sri Lanka
Evans DM, Day KR (2002) Hunting disturbance on large shallow lake: the effectiveness of waterfowl refuges. Ibis 144:2–8. doi:10.1046/j.0019-1019.2001.00001.x
Fernandez-Juricic E (2004) Spatial and temporal analysis of the distribution of forest specialists in an urban-fragmented landscape (Madrid, Spain): Implications for local and regional bird conservation. Landsc Urban Plan 69:17–32. doi:10.1016/j.landurbplan.2003.09.001
Hails AJ (ed) (1997) Wetlands, biodiversity and Ramsar convention: the role of the convention wetlands in the conservation and wise use of biodiversity. Ramsar Convention Bureau, Gland
Harrison J (2005) A field guide to the birds of Sri Lanka. Oxford University Press, Oxford
Hobday AJ, Okey TA, Poloczanska ES, Kunz TJ, Richardson AJ (eds) (2006) Impacts of climate change on Australian marine life: part C. Australian Greenhouse Office, Canberra
Johnson RJ, Beck MM (1988) Influences of shelterbelts on wildlife management and biology. Agric Ecosyst Environ 22–23:301–335. doi:10.1016/0167-8809(88)90028-X
Kázmér M (1990) Birth, life and death of the Pannonian Lake. Palaeogeogr Palaeoclimatol Palaeoecol 79:171–188. doi:10.1016/0031-0182(90)90111-J
Korschgen EC, Dahlgren RB (1992) Human disturbances of waterfowl: causes, effects, and management, waterfowl management hand book. Fish and Wildlife Service, Department of the Interior, United States
Lafferty KD (2001) Distribution to wintering western snowy plovers. Biol Conserv 101:315–325. doi:10.1016/S0006-3207(01)00075-1
Lapointe S, Giroux JF, Bélanger L, Filion B (2000) Benefits of rotational grazing and dense nesting cover for island-nesting waterfowl in southern Quebec. Agric Ecosyst Environ 78:261–272. doi:10.1016/S0167-8809(99)00132-2
Leyse KE, Lawler SP, Strange T (2004) Effects of an alien fish, Gambusia affinis, on an endemic California fairy shrimp, Linderiella occidentalis: implications for conservation of diversity in fishless waters. Biol Conserv 118:57–65. doi:10.1016/j.biocon.2003.07.008
Ligeza S, Smal H (2003) Accumulation of nutrients in soils affected by perennial colonies of piscivorous birds with reference to biogeochemical cycles of elements. Chemosphere 52:595–602. doi:10.1016/S0045-6535(03)00241-8
Lynch EA, Saltonstall K (2002) Pale ecological and genetic analyses provide evidence for recent colonization of native Phragmites australis populations in a Lake Superior wetland. Wetlands 22:637–646. doi:10.1672/0277-5212(2002)022[0637:PAGAPE]2.0.CO;2
Marchant JH, Freeman SN, Crick HQP, Beaven LP (2004) The BTO Heronries Census of England and Wales 1928–2000: new indices and a comparison of analytical methods. Ibis 146:323–334. doi:10.1111/j.1474-919X.2004.00272.x
McConnachie AJ, de Wit MP, Hill MP, Byrne MJ (2003) Economic evaluation of the successful biological control of Azolla filiculoides in South Africa. Biol Control 28:25–32. doi:10.1016/S1049-9644(03)00056-2
Murphy KJ (1988) Aquatic weed problems and their management: a review I. The worldwide scale of the aquatic weed problem. Crop Prot 7:232–248. doi:10.1016/0261-2194(88)90044-0
OldeVenterink H, Davidsson TE, Kiehl K, Leonardson L (2002) Impact of drying and re-wetting on N, P and K dynamics in a wetland soil. Plant Soil 243:119–130. doi:10.1023/A:1019993510737
Shochat E, Wolfe DH, Patten MA, Reinking DL, Sherrod SK (2005) Tallgrass prairie management and bird nest success along roadsides. Biol Conserv 121:399–407. doi:10.1016/j.biocon.2004.05.012
Siebert SF (1987) Land use intensification in tropical uplands: effects on vegetation, soil fertility and erosion. For Ecol Manage 21:37–56. doi:10.1016/0378-1127(87)90071-5
Skagen SK, Knight RL, Orians GH (1991) Human disturbance of an avian scavenging guild. Ecol Appl 1:215–225. doi:10.2307/1941814
Smith RM, Thompson K, Hodgson JG, Warren PH, Gaston KJ (2006) Urban domestic gardens (IX): composition and richness of the vascular plant flora, and implications for native biodiversity. Biol Conserv 129:312–322. doi:10.1016/j.biocon.2005.10.045
Sri Lanka IUCN (2004) Wetland conservation in Sri Lanka. In: Proceedings of the national symposium on wetland conservation and management, Sri Lanka
Steadman DW, Martin PS (2003) The late quaternary extinction and future resurrection of birds on Pacific islands. Earth Sci Rev 61:133–147. doi:10.1016/S0012-8252(02)00116-2
Sutherland WJ (1996) Ecological census techniques. Cambridge University Press, UK
www.issg.org/database/welcome/. IUCN Global Invasive Species Database. Accessed 09 May 2007
www.ramsar.org/about/about_sustainabletourism_anawilundawa.pdf. Ecotourism Development Plan for Anawilundawa Wildlife Sanctuary and Ramsar Wetland. IUCN. Accessed 11 May 2007
Zar JH (1984) Biostatistical analysis, 2nd edn. Prentice-Hall Inc., New Jersey
Zedler JB, Kercher S (2004) Causes and consequences of invasive plants in wetlands: opportunities, opportunists, and outcomes. Crit Rev Plant Sci 23:431–452
Acknowledgements
The authors thank Department of Wildlife Conservation, Sri Lanka for their permission to conduct field work at Anavilundawa Ramsar sanctuary. M. D. S. T de Croos, K. Wijenayake, G. Thilakeratne and C. Pathirage are acknowledged for assistance in the field. We appreciate the help of Anavilundawa temple and villagers. Wayamba University of Sri Lanka funded the study.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Gunaratne, A.M., Jayakody, S. & Bambaradeniya, C.N.B. Spatial distribution of aquatic birds in Anavilundawa Ramsar wetland sanctuary in Sri Lanka. Biol Invasions 11, 951–958 (2009). https://doi.org/10.1007/s10530-008-9307-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10530-008-9307-1