Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Gísli A Víkingsson"'
Autor:
Filipa I P Samarra, Manuela Bassoi, Julie Béesau, Margrét Ó Elíasdóttir, Karl Gunnarsson, Marie-Thérèse Mrusczok, Marianne Rasmussen, Jonathan N Rempel, Baldur Thorvaldsson, Gísli A Víkingsson
Publikováno v:
PLoS ONE, Vol 13, Iss 12, p e0207287 (2018)
Killer whales have a cosmopolitan distribution and as a species are generalists, feeding on a variety of prey. However, local populations tend to specialise on specific prey types. In Icelandic waters, killer whales are generally associated with herr
Externí odkaz:
https://doaj.org/article/f388aac100d94fe5a919eae55fee6f5e
Autor:
Gísli A Víkingsson, Daniel G Pike, Geneviève Desportes, Nils Øien, Thorvaldur Gunnlaugsson, Dorete Bloch
Publikováno v:
NAMMCO Scientific Publications, Vol 7, Iss 0, Pp 49-72 (2013)
North Atlantic Sightings Surveys (NASS) is a series of large scale international cetacean line transect surveys, conducted in 1987, 1989, 1995 and 2001, that covered a large part of the central and eastern North Atlantic. Target species were fin (Bal
Externí odkaz:
https://doaj.org/article/83cfdef4683045fbb716dd74237bec80
Publikováno v:
NAMMCO Scientific Publications, Vol 7, Iss 0, Pp 95-110 (2009)
We estimate the abundance of minke whales (Balaenoptera acutorostrata) from the Icelandic coastal shelf aerial surveys carried out as part of the 1987 and 2001 North Atlantic Sightings Surveys (NASS). In the case of the 1987 survey, the probability o
Externí odkaz:
https://doaj.org/article/d9770cfc99fa420daa0568a4eca9fac2
Publikováno v:
NAMMCO Scientific Publications, Vol 7, Iss 0, Pp 117-142 (2009)
Aerial surveys were carried out in coastal Icelandic waters 4 times between 1986 and 2001 as part of the North Atlantic Sightings Surveys. The surveys had nearly identical designs in 3 of the 4 years. The target species was the minke whale (Balaenopt
Externí odkaz:
https://doaj.org/article/84e2078b3b6a490f8bbdf1f9e422c6dd
Autor:
Charles GM Paxton, M Louise Burt, Sharon L Hedley, Gísli A Víkingsson, Thorvaldur Gunnlaugsson, Geneviève Desportes
Publikováno v:
NAMMCO Scientific Publications, Vol 7, Iss 0, Pp 143-160 (2009)
Generalized additive models (GAMs) with spatially referenced covariates were fitted to data collected during the 1995 and 2001 Icelandic (shipboard and aerial) and Faroese (shipboard only) components of the North Atlantic Sightings Surveys (NASS-95 a
Externí odkaz:
https://doaj.org/article/48630c73d60c47fb842d67651b46276c
Publikováno v:
NAMMCO Scientific Publications, Vol 7, Iss 0, Pp 19-29 (2009)
The distribution and abundance of blue whales (Balaenoptera musculus) was assessed from ship surveys conducted in the Central and Northeast Atlantic in 1987, 1989, 1995 and 2001. Blue whales were most commonly sighted off western Iceland, and to a le
Externí odkaz:
https://doaj.org/article/e8416f88e95447aab86eb4cd57931b24
Autor:
Daniel G Pike, Thorvaldur Gunnlaugsson, Gísli A Víkingsson, Geneviève Desportes, Dorete Bloch
Publikováno v:
NAMMCO Scientific Publications, Vol 7, Iss 0, Pp 81-93 (2009)
North Atlantic Sightings Surveys for cetaceans were carried out Northeast and Central Atlantic in 1987, 1989, 1995 and 2001. Here we provide estimates of density and abundance for minke whales from the Faroese and Icelandic ship surveys. The estimate
Externí odkaz:
https://doaj.org/article/155fdd8dbe804702a6972b346c0a8eac
Publikováno v:
NAMMCO Scientific Publications, Vol 5, Iss 0, Pp 195-210 (2003)
A total of 1,268 harbour porpoises were obtained from fishing nets in Icelandic coastal waters from September to June in the years 1991 to 1997. Foetal sex ratio was 1.2:1 (male:female). The bias towards males increased further among older animals in
Externí odkaz:
https://doaj.org/article/2bd66e2792fc406a922906f08ce92aff
Publikováno v:
NAMMCO Scientific Publications, Vol 5, Iss 0, Pp 243-270 (2003)
The stomach contents of 1,047 harbour porpoises (Phocoena phocoena) bycaught in gillnets off Iceland were analysed. Most of the samples were obtained southwest (SW) and southeast (SE) of Iceland and the majority were taken in March and April. The sex
Externí odkaz:
https://doaj.org/article/28d9bd1217224b04b41d6d4419ed692d
Autor:
Gísli A Víkingsson, Finn O Kapel
Publikováno v:
NAMMCO Scientific Publications, Vol 2, Iss 0, Pp 5-8 (2000)
Externí odkaz:
https://doaj.org/article/c5cf3eff184b4434a53acc4b33bc8dbf