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Mason Mason, Macdonald Macdonald (1983)
Some factors influencing the distribution of Lutra lutra ’Mammal Review, 13
Mason Mason, Macdonald Macdonald (1993a)
Impact of organochlorine residues and PCBs on otters in East EnglandThe Science of the Total Environment, 138
R. Clarke, M. Greenacre (1985)
Theory and Applications of Correspondence AnalysisJournal of Animal Ecology, 54
J. Thioulouse (1990)
MacMul and graphMu: two Macintosh programs for the display and analysis of multivariate data: 1235Computers & Geosciences, 16
Callejo Callejo, Delibes Delibes (1987)
Dieta de la nutria Lutra lutra (Linnaeus 1758) en la cuenca del alto Ebra, norte de EspanaMiscellania Zoologica Barcelona, 11
Erlinge Erlinge (1967)
Food habits of the fish otter Lutra lutra L. in south Swedish habitatsViltrevy, 4
T. Lodé (1993)
The decline of otter Lutra lutra populations in the region of the pays de loire, Western FranceBiological Conservation, 65
I. Kozena, P. Urbán, I. Stouracova, I. Mazur (1992)
The diet of the otter (Lutra lutra Linn.) in the Pol'ana protected landscape regionFolia Zoologica, 41
Mason Mason, Madsen Madsen (1990)
Mortality and condition in otters Lutra lutra from Denmark and BritainNatura Jutlandica, 22
C. Mason, S. Macdonald (1993)
Impact of organochlorine pesticide residues and PCBs on otters (Lutra lutra): a study from western Britain.The Science of the total environment, 138 1-3
C. Mason, S. Macdonald (1993)
Impact of organochlorine pesticide residues and PCBs on otters (Lutra lutra) in eastern England.The Science of the total environment, 138 1-3
P. Chanin (1985)
The Natural History of Otters
Hlavác Hlavác, Toman Toman (1991)
Finding of dead otters Lutra lutra and preliminary results of analyses of dead animalsVydra, 2
Mason Mason (1991)
Acidification of freshwaters—a problem for otters?Habitat, 6
Kruuk Kruuk, Carss Carss, Conroy Conroy, Durbin Durbin (1993)
Otter Lutra lutra numbers and fish productivity in rivers of North East ScotlandSymposium of the Zoological Society of London, 65
Wise Wise, Linn Linn, Kennedy Kennedy (1981)
A comparison of the feeding biology of mink Mustela vison and otterLutra lutra’, Journal of Zoology, 195
S. Macdonald, C. Mason (1983)
Some factors influencing the distribution of otters (Lutra lutra)Mammal Review, 13
Dulfer Dulfer (1993)
Trebon Biosphere Reserve Otter ProjectIUCN Otter Specialist Group Bulletin, 8
H. Gauch (1984)
Multivariate analysis in community ecology
D. Jefferies, P. Wayre, R. Jessop, A. Mitchell-Jones (1986)
Reinforcing the native Otter Lutra lutra population in East Anglia: an analysis of the behaviour and range development of the first release groupMammal Review, 16
Mason Mason (1992)
Do otter releases make sense?Habitat, 7
1 The distribution and diet of two groups of captive‐bred, re‐introduced otters Lutra lutra (L.) was assessed through the collection and analysis of spraints (faeces), collected between July 1992 and March 1994 from the Rivers Stort, Lee and Rib in Hertfordshire (UK). 2 Almost immediately after release in 1991, both groups of otters moved upstream of their release sites. In February 1992, one male was found dead on a road near the River Stort, and both groups appeared to have moved downstream, their total range eventually extending to about 40 km, from 8 km downstream of the confluence of the Rivers Stort and Lee to about 16 km up the Stort and 16 km up the Lee. 3 Fish, principally cyprinids, formed the major dietary element, with spatial differences in prey availability influencing the range of secondary items taken. Eels were the only prey category to show significant seasonal variation in spraints, occurring more often than expected in spring and summer spraints. Mammals/amphibia and birds were taken as prey only occasionally. Where environmental quality and/or prey species diversity were low, small‐bodied fish species, such as three‐spined stickleback Gasterosteus aculeatus, bullhead Cottus gobio and stone loach Barbatula barbatula, occurred more frequently in the diet. 4 Only two of the seven IUCN criteria for re‐introductions appear to have been met before the otters' release, and subsequent assessments suggest that most other criteria were not. As there has been only one possible, but unconfirmed, sighting of a female with cubs, it remains unclear whether the released otters have reproduced and thus the success of the re‐introduction is doubtful.
Aquatic Conservation: Marine and Freshwater Ecosystems – Wiley
Published: Jun 1, 1995
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