A5020585690- Marine animal studies overview
- Marine Bivalve and Aquaculture Studies
- Marine and fisheries research
- Arctic and Antarctic ice dynamics
- Isotope Analysis in Ecology
- Avian ecology and behavior
- Cephalopods and Marine Biology
- Cryospheric studies and observations
- Genetic diversity and population structure
- Atmospheric and Environmental Gas Dynamics
- Marine and coastal plant biology
Marine and Freshwater Research Institute
2019-2025
Instituto de Investigacións Mariñas
2003
Maintaining a stable core body temperature is essential for endotherms. Cetaceans live in highly thermally conductive medium, requiring special adaptations to reduce heat loss and maintain homeothermy. We employed combination of aerial photogrammetry existing data sources estimate rates five sympatric cetaceans varying sizes, inhabiting the sub-arctic waters (∼3.7 °C) NE-Iceland: harbour porpoises (Phocoena phocoena, 1.0 - 1.6 m, n=50), white-beaked dolphins (Lagenorhynchus albirostris, 1.1...
It is generally recognized that large-scale whaling in the 19th and 20th century led to a substantial reduction of size many cetacean populations, particularly those baleen whales (Mysticeti). The impact these operations on genomic diversity one most hunted whales, fin whale (Balaenoptera physalus), has remained largely unaddressed because paucity adequate samples limitation applicable techniques. Here, we have examined effect North Atlantic based genomes 51 individuals from Icelandic...
The North Atlantic Sightings Survey (NASS), the sixth in a series of surveys conducted between 1987 and 2015, was June/July 2015 covered large area northern Atlantic. Icelandic Faroese ship survey component NASS Faroe Islands East Greenland from latitude 52° to 72° N. used 3 vessels an independent double-platform configuration with each platform staffed by minimum 2 observers. Here we present both uncorrected abundance estimates derived using Multiple Covariates Distance Sampling, corrected...
Biodiversity in the oceans has dramatically declined since beginning of industrial era, with accelerated loss marine biodiversity impairing ocean's capacity to maintain vital ecosystem services. A few organisms epitomize damaging and long-lasting effects anthropogenic exploitation: Some whale species, for instance, were brought brink extinction, their population sizes reduced such low levels that may have caused a significant disruption reproductive dynamics facilitated hybridization events....
The highly productive waters off Iceland are an important feeding ground for baleen whales. Five balaenopterid species coexist there during the summer season: blue whale, fin sei humpback whale and common minke whale. For capital breeders such as whales, niche partitioning reduced interspecific competition their stay in grounds may be critical completion of annual cycles long-term stability populations. Coexistence often entails spatio-temporal or trophic segregation to avoid competitive...
The Trans-North Atlantic Sightings Survey (T-NASS) carried out in June-July 2007 was the fifth a series of large-scale cetacean surveys conducted previously 1987, 1989, 1995 and 2001. core survey area covered an about 1.8 million nm² spanning from Eastern Barents Sea at 34°E to east coast Canada, between 52°N 78°N south 42°N west. We present design-based abundance estimates Faroese Icelandic vessel components T-NASS, as well results ancillary vessels which adjoining areas. 4 dedicated used...
A total of 1,268 harbour porpoises were obtained from fishing nets in Icelandic coastal waters September to June the years 1991 1997. Foetal sex ratio was 1.2:1 (male:female). The bias towards males increased further among older animals present collection. modal year classes 0 and 1 but oldest porpoise a female estimated at 20 age. Length birth as approximately 75 cm, females grew faster attained larger sizes than males. Asymptotic length 149.6 cm for 160.1 females. Estimated age sexual...
Stable isotope ratios have proven a valuable tool to investigate marine mammal ecology, including diet, distribution, and migratory movements. While most studies focused on δ 15 N 13 C values, 34 S values been little used because their pattern of variation tissue dynamics remain unclear. We examined the sequential N, C, along baleen plates from fin whales occurring off West Iceland in summer. All exhibited fluctuations growing axis. A significant synchronic correlation was found between...
In July 2022, two Risso's dolphins were reported stranded in Hrútafjörður (N65° 09,503; W21° 05,529), a fjord northern Iceland. These events represent the first confirmed observations and strandings of Icelandic waters. Given uniqueness these events, decision was made to conduct full necropsies on individuals. This study reports findings from viral parasitological investigations, morphological fitness measurements, as well stomach intestine content analysis for each dolphin specimens. The...
In this study, we analyse some aspects of the macro- and microscopical appearance gonads harbour porpoises (Phocoena phocoena) from Icelandic coastal waters. Sampling animals bycaught in gillnets took place years 1991 to 1997 covered months September June. The differences diameter seminiferous tubules between samples peripheral central parts testis indicate that histological changes associated with maturity begin core testis. average tubule was 49, 78 118 μm immature, pubertal mature...
The North Atlantic fin whale (Balaenoptera physalus) undertakes long-distance annual migration between high-latitude summer feeding locations and low-latitude winter mating locations, like most of the baleen whales. By statistically comparing genotype profiles mother-foetus pairs (n = 23) to that potential alleged father 139) captured at same location in Iceland, we found a matching pairing 2009 2010. To our knowledge, present study is first one detect pair with an father, caught exactly...