Results 21 to 30 of about 142,562 (156)
Behavioral evidence of thermal stress from overheating in UK breeding gray seals [PDF]
, 2002 Gray seals (Halichoerus grypus) in the UK exhibit clear preferences for pupping close to pools of water on inland breeding sites. The reasons for this are unclear as seals are thought to derive all their water requirements from the metabolism of fat ...
Redman, P. +11 more
core +1 more source
Background of Harp in Sasanian period and its comparison with other civilizations in Ancient Near East [PDF]
پژوهش های تاریخی, 2019 Among the existing chordophones it is harp (in Persian, Chang) that had a special position in ancient civilizations. No investigation has yet been conducted on the history of harp and its development in different periods; however, in this regard ...
Keyvan Hajian +2 more
doaj +1 more source
A Bayesian approach to modelling field data on multi-species predator prey-interactions [PDF]
, 2007 Multi-species functional response models are required to model the predation of generalist preda- tors, which consume more than one prey species. In chapter 2, a new model for the multi-species functional response is presented.
Asseburg, Christian
core +2 more sources
The diet and feeding ecology of harbour seals around Britain [PDF]
, 2015 Since 2000, there has been a marked decline in the number of harbour seals in some regions around Britain; one possible contributing cause is competition for prey with sympatric grey seals.
Wilson, Lindsay J.
core +2 more sources
A review of the battle for food in the Barents Sea: Cod vs. marine mammals
Frontiers in Ecology and Evolution, 2015 Cod, harp seal and minke whale are the main top predators in the Barents Sea ecosystem. In the last decade, the abundance of cod has increased considerably, and is at a record high level.
Bjarte eBogstad +4 more
doaj +1 more source
Harp Seals: Monitors of Change in Differing Ecosystems
Frontiers in Marine Science, 2020 Harp seals are the most abundant marine mammal in the north Atlantic. As an ice obligatory predator, they reflect changes in their environment, particularly during a period of climatic change.
Garry B. Stenson +2 more
doaj +1 more source
NAMMCO Scientific Publications, 2000 Diet data were collected in the Greenland Sea pack ice (the West Ice) from March to June from harp seals (Phoca groenlandica) in 1987, 1990-1992 and 1997, and from hooded seals (Cystophora cristata) in 1992 and 1994, during Soviet Russian commercial ...
Vladimir Potelev +3 more
doaj +1 more source
Investigation of olfaction of gray and harp seals by the operant training method
Vestnik MGTU, 2018 The results of studying the possibility of producing a motor conditioned reflex in the gray and harp seals on the smell of an object and the ability of experimental seals to differentiate certain odours have been presented.
Litvinov Yu. V. , Pakhomov M. V.
doaj +1 more source
Polar Research, 2021 This study presents comprehensive mapping of the current distribution of pinnipeds and polar bears (Ursus maritimus) around Svalbard based on a regional marine mammal sightings programme and explores time-trends (2005–2018).
Olof Bengtsson +4 more
doaj +1 more source
NAMMCO Scientific Publications, 2001 The importance of a given host to a particular parasite can be determined according to three different criteria: host preference, host physiological suitability and host contribution to transmission. Most studies on the sealworm Pseudoterranova decipiens
F Javier Aznar +3 more
doaj +1 more source