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MacRo-habitat Preferences by the African Manatee and Crocodiles – Ecological and Conservation Implications : Volume 12, Issue 1 (04/07/2012)

By Luiselli, L.

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Book Id: WPLBN0004023302
Format Type: PDF Article :
File Size: Pages 10
Reproduction Date: 2015

Title: MacRo-habitat Preferences by the African Manatee and Crocodiles – Ecological and Conservation Implications : Volume 12, Issue 1 (04/07/2012)  
Author: Luiselli, L.
Volume: Vol. 12, Issue 1
Language: English
Subject: Science, Ecology
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Angelici, F. M., Ebere, N., Politano, E., Amori, G., Luiselli, L., & Akani, G. C. (2012). MacRo-habitat Preferences by the African Manatee and Crocodiles – Ecological and Conservation Implications : Volume 12, Issue 1 (04/07/2012). Retrieved from http://www.ebooklibrary.org/


Description
Description: Environmental Studies Centre Demetra s.r.l. and Eni s.p.a. Environmental Department, corresponding address: via Olona 7, 00198 Roma, Italy. African manatees (Trichechus senegalensis) and crocodiles are threatened species in parts of their range. In West Africa, crocodiles may constitute the main predators for manatees apart from humans. Here, we explore the macro-habitat selection of manatees and two species of crocodiles (West African crocodiles Crocodylus suchus and dwarf crocodile Osteolaemus tetraspis) in the Niger Delta (Nigeria), testing the hypotheses that (i) manatees may avoid crocodiles in order to minimize risks of predation, and (ii) the two crocodile species do compete. The study was carried out between 1994 and 2010 with a suite of different field techniques. We observed that the main macro-habitat types were freshwater rivers and coastal lagoons for manatees, mangroves for West African crocodiles, and rivers and creeks for dwarf crocodiles, with (i) the three species differing significantly in terms of their macro-habitat type selection, and (ii) significant seasonal influence on habitat selection of each species. Null models for niche overlap showed a significantly lower overlap in macro-habitat type use between manatee and crocodiles, whereas the two crocodiles were relatively similar. Null model analyses did not indicate any competitive interactions between crocodiles. On the other hand, manatees avoided macro-habitats where crocodiles, and especially West African crocodiles, are abundant.

Summary
Macro-habitat preferences by the African manatee and crocodiles – ecological and conservation implications

Excerpt
Akani, G. C. and Luiselli, L.: Diversity and distribution of sea turtles in the Niger Delta, Nigeria, Rev. Ecol. (Terre Vie), 64, 369–374, 2009.; Akani, G. C., Luiselli, L., Angelici, F. M., and Politano, E.: Preliminary data on distribution, habitat and status of crocodiles (\textitCrocodylus niloticus, Crocodylus cataphractus and \textitOsteolaemus tetraspis) in the eastern Niger delta (Nigeria), Bull. Soc. Herp. Fr., 87–88, 35–43, 1998.; Angelici, F. M., Egbide, B., and Akani, G. C.: Some new mammal records from the rainforests of south-eastern Nigeria, Hystrix (N.S.), 12, 37–43, 2001.; Arimoro, F. O., Ogbeibu, A. E., and Raifu, F. F.: Phytophilous macroinvertebrates of floating \textitNymphaea lotus and \textitPistia stratiotes in River Orogodo, Niger Delta, Nigeria, Tropical Freshwater Biology, 16, 75–87, 2007.; Begon, M., Harper, J. L., and Townsend, C. R.: Ecology. Individuals, Populations and Communities, 3rd Edn., Wiley-Blackwell, New York, 1996.; Blench, R.: Mammals of the Niger Delta, Nigeria, Cambridge, 2007.; Bowyer, R. T., Van Ballenberghe, V., Kie, J. G., and Maier, J. A. K.: Birth-site selection by Alaskan moose: maternal strategies for coping with a risky environment, J. Mammal., 80, 1070–1083, 1999.; Connell, J. H.: Diversity and the coevolution of competitors, or the ghost of competition past, Oikos, 35, 131–138, 1980.; Coté, I. M. and Suntherland, W. J.: The effectiveness of removing predators to protect bird populations, Conserv. Biol., 11, 395–405, 1997.; Cott, H. B.: Scientific results of an inquiry into the ecology and economic status of the Nile crocodile (\textitCrocodylus niloticus) in Uganda and northern Rhodesia, Transactions of the Zoological Society of London, 29, 211–358, 1961.; Crowder, L. B. and Cooper, W. E.: Habitat structural complexity and the interaction between bluegills and their prey, Ecology, 63, 1802–1813, 1982.; De Montclos, M. A.: Le Nigéria, Kurthala, Paris, 1984.; Dill, L. M.: Animal decision making and its ecological consequences: the future of aquatic ecology and behaviour, Can. J. Zool., 65, 803–811, 1987.; Domning, D. P. and Hayek, L. A.-C.:. Interspecific and intraspecific morphological variation in manatees (Sirenia: \textitTrichechus), Mar. Mammal Sci., 2, 87–144, 1986.; Dore, M. P. O.: Status of crocodiles in Nigeria. Fauna and Flora Preservation Society, London, 1996.; Drake, N. A., Blench, R. M., Armitage, S. J., Barlow, C. S., and White, K. H.: Ancient watercourses and biogeography of the Sahara explain the peopling of the desert, P. Natl. Acad. Sci. USA, 108, 458–462, 2011.; Dudgeon, D.: The ecology of tropical Asian rivers and streams in relation to biodiversity conservation, Annual Reviews of Ecology and Systematics, 31, 239–263, 2000.; Eaton, M. J., Martin, A., Thorbjarnarson, J., and Amato, G.: Species-level diversification of African dwarf crocodiles (genus \textitOsteolaemus): A geographic and phylogenetic perspective, Mol. Phylogenet. Evol., 50, 496–506, 2009. \hack; Emanoil, M.: Encyclopedia of Endangered Species, IUCN and Gale Research Inc., Washington D.C., 1994.; Fergusson, R. A.: Nile crocodile \textitCrocodylus niloticus, in: Crocodiles. Status Survey and Conservation Action Plan, 3rd Edn., edited by: Manolis, S. C. and Stevenson, C., Crocodile Specialist Group, Darwin, 84–89, 2010,; Fernandes, M. E. B.: Phenological patterns of \textitRhizophora L., \textitAvicennia L. and \textitLaguncularia Gaertn. f. in Amazonian mangrove swamps, Hydrobiologia, 413, 53–62, 1999.; Gilliam, J. F. and Fraser, D. F.: Habitat selection under predation hazard: Test of a model with foraging minnows, Ecology, 68, 1856–1862, 1987.; Fischhoff, I. R., Sundaresana, S. R., Cordingleya, J., and Rubenstein, D. J.: Habitat use and movements of plains zebra (\textitEquus burchelli) in response to predation danger from lions, Behavioural Ecology, 18, 725–729, 2007.; Fortin, D., Beyer, H. L., Boyce, M. S., Smith, D. W., Duchesne, T., and Mao, J. S.: Wolves influence elk movements: beha


 

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