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Article
Carl Johan Svensson, Auteur ; Anders Eriksson, Auteur ; Tero Harkonen, Auteur ; Karin C. Harding, AuteurTime series of abundance estimates are commonly used for analyses of population trends and possible shifts in growth rate. We investigate if trends in age composition can be used as an alternative to abundance estimates for detection of decelera[...]
Article
Mart Jussi, Auteur ; Tero Harkonen, Auteur ; Eero Helle, Auteur ; Ivar Jussi, AuteurBaltic grey seals (Halichoerus grypus) alternate between land and ice breeding, depending on ice conditions. We show that the fitness of grey seal females in terms of pup mortality and quality is reduced when breeding on land as compared with ic[...]
Article
Lisa Sundqvist, Auteur ; Tero Harkonen, Auteur ; Carl Johan Svensson, Auteur ; Karin C. Harding, AuteurA global trend of a warming climate may seriously affect species dependent on sea ice. We investigated the impact of climate on the Baltic ringed seals (Phoca hispida botnica), using historical and future climatological time series. Availability[...]
Article
Ailsa J. Hall, Auteur ; Paul D. Jepson, Auteur ; Simon J. Goodman, Auteur ; Tero Harkonen, AuteurTWO outbreaks of phocine distemper have severely affected harbour seal (Phoca vitulina) populations in European and UK waters. The first occurred in 1988 when the causative virus was identified as a new member of the genus morbillivirus. The sec[...]
Article
Tero Harkonen, Auteur ; Mart Jussi, Auteur ; Mirgaly Baimukanov, Auteur ; Anders Bignert, Auteur ; Lilia Dmitrieva, Auteur ; Yesbol Kasimbekov, Auteur ; Mikhail Verevkin, Auteur ; Susan Wilson, Auteur ; Simon Goodman, AuteurAerial surveys of Caspian seals on the winter ice field in Kazakhstan territorial waters were carried out in February 2005 and 2006 to assess the annual pup production for the species and natural predation on newborn pups. Estimated pup producti[...]
