Eivind Oug- Norwegian Institute for Water Research
Eivind Oug
- Norwegian Institute for Water Research
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125
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Introduction
Skills and Expertise
Current institution
Publications
Publications (125)
The Benthos Ecology Working Group (BEWG) aims to study, describe and update on all aspects relevant to the ecology, functioning and interactions of marine benthic organisms across the Northeastern Atlantic, either living in or within the sediment, either animals or plants, either macro, meio or epibenthic, either littoral and sublittoral up to the...
Loki’s Castle Vent Field (LCVF, 2300 m) was discovered in 2008 and represents the first black-smoker vent field discovered on the Arctic Mid-Ocean Ridge (AMOR). However, a comprehensive faunal inventory of the LCVF has not yet been published, hindering the inclusion of the Arctic in biogeographic analyses of vent fauna. There is an urgent need to u...
This is an assessment of risk and risk-reducing measures related to the introduction and dispersal of the invasive alien carpet tunicate Didemnum vexillum in Norway.
This report (which is in Norwegian) discusses and proposes variables to determine ecological quality for the marine nature types and units presented in Bekkby et al. (2021). Alternative variables, standardized criteria and threshold values for status and nature diversity have been discussed, and defined where this has been possible. The purpose of...
We report the first ever nation-wide study of the occurrence of non-indigenous species in Danish harbours. The sampling was carried out using both conventional and biomolecular methods (eDNA). In total, 16 harbours were covered – Esbjerg and Aarhus, the two largest harbours in Denmark, with intensive sampling and 14 harbours with a reduced programm...
Vi kommer her med innspill til utvikling av metodikk og kriterier for kartlegging og fastsettelse av økologisk kvalitet til et utvalg av marine naturtyper basert på feltundersøkelser. De utvalgte naturtypene er ålegrasenger, sukkertareskog, muslingbunner (både blåskjellbunner og flatøstersbanker), helofytt-saltvannssumper og ruglbunner. Undersøkels...
In January 2015, the Norwegian government decided that mapping of habitat types shall be carried out using the most objective, value neutral and verifiable methodology possible, with emphasis on mapping the most valuable habitat types first. The government wanted to prioritize mapping of habitat types that are either endangered, important for many...
Since its first appearance in the eastern Barents Sea in 1996, the invasive snow crab (Chionoecetes opilio) has rapidly increased and spread towards the west and in 2017 a few individuals were caught off the coast of Svalbard, Norway. The crab is a generalist predator, feeding on a wide range of benthic epi- and infauna, shrimp and even fish. As th...
Summary of a large ecological quantitative impact assessment for alien species in Norway.
Additional information and data repository: Sandvik H et al (2020) Data from: Ecological impact assessments of alien species in Norway. Dryad Digital Repository, https://doi.org/10.5061/dryad.8sf7m0cjc
1 . Due to globalisation, trade and transport, the spread of alien species is increasing dramatically. Some alien species become ecologically harmful by threatening native biota. This can lead to irreversible changes in local biodiversity and ecosystem functioning, and, ultimately, to biotic homogenisation.
2 . We risk‐assessed all alien plants, a...
Climate change is leading to increases in freshwater discharge to coastal environments with implications for benthic community structure and functioning. Freshwater inputs create strong environmental gradients, which potentially affect the community structure of benthic infauna. In turn, changes in functional trait composition have the potential to...
We present the results of an inventory and status assessment of alien species in Norway. The inventory covered all known multicellular neobiota, 2496 in total, 1039 of which were classified as naturalised. The latter constitute c. 3% of all species known to be stably reproducing in Norway. These figures are higher than expected from Norway’s latitu...
Disposal of mine tailings in marine shallow water ecosystems represents an environmental challenge, and the present paper reports results from a field study in Frænfjorden, Norway, which is subject to such disposal. Structural and functional responses of benthic infauna and epifauna were investigated along a gradient from heavy tailings deposition...
World Seas: An Environmental Evaluation, Second Edition, Volume One: Europe, The Americas and West Africa provides a comprehensive review of the environmental condition of the seas of Europe, the Americas and West Africa. Each chapter is written by experts in the field who provide historical overviews in environmental terms, current environmental s...
Online: https://www.artsdatabanken.no/rodlistefornaturtyper
Online: https://www.artsdatabanken.no/rodlistefornaturtyper
Arbeidet i dette prosjektet har vist hvordan ulike metoder for beregning av tilstand og referansetilstand kan bli brukt for å øke den geografiske representativiteten for punktmålte indikatorer i naturindeksen. Ferskvannsindikatoren vannplanter (TIc) er brukt som eksempel, og vi ser tilsvarende forbedringspotensial for andre vanndirektivindekser i n...
Lanseringsseminar for Norsk rødliste for naturtyper, Trondheim 21.11.2018.
Skagerrak has been subject to several anthropogenic influences over the past decades, with climate change and eutrophication being considered as the most serious and large-scale disturbance factors. The present study reports monitoring data from six soft bottom stations in 50–380 m depth at the Norwegian Skagerrak coast aimed at investigating to wh...
We investigate mitochondrial (COI, 16S rDNA) and nuclear (ITS2, 28S rDNA) genetic structure of North East Atlantic lineages of Terebellides, a genus of sedentary annelids mainly inhabiting continental shelf and slope sediments. We demonstrate the presence of more than 25 species of which only seven are formally described. Species boundaries are det...
ITS2x-all.nex.
Alignment, in nexus-format, with all 402 ITS2-sequences, aligned with X-INS-i in MAFFT.
(NEX)
CONCATs.nex.
Concatenated alignment, in nexus-format of COI, 16S rDNA, ITS2x, 28S rDNA, including specimens with data from three of the four genetic markers.
(NEX)
CONCATnucls_ML.tre.
Resulting tree with support values, using Maximum Likelihood on nuclear data only, with salsa-aligned ITS2-sequences.
(TRE)
COI_TCS_log.rtf.
Log-file from the TCS-analysis on COI-all.
(RTF)
COI_GMYC_code_nodes.pdf.
Topology from the GMYC-analysis on COI-unique with node numbers.
(PDF)
ITS2x_GMYC_log.rtf.
Log-file from the GMYC-analysis on ITS2s.
(RTF)
ITS2s_GMYC_code_nodes.pdf.
Topology from the GMYC-analysis on ITS2s with node numbers.
(PDF)
ITS2s_GMYC_support.xls.
Support-values for nodes from the GMYC-analysis on COI.
(XLS)
STACEY_log.txt.
Log-file from STACEY analysis on the COI_and_ITS2s data set.
(TXT)
Distances_ITS2s.xlsx.
Uncorrected distances from ITS2s data set.
(XLSX)
COI-unique.nex.
Alignment, in nexus-format, with the unique 271 COI-sequences.
(NEX)
CONCATx.nex.
Concatenated alignment, in nexus-format, of COI, 16S rDNA, ITS2s, and 28S rDNA, including specimens with data from three of the four genetic markers.
(NEX)
CONCATmito_ML.tre.
Resulting tree with support values, using Maximum Likelihood on mitochondrial data only.
(TRE)
CONCATnucls_BI.tre.
Resulting tree with support values, using Bayesian inference on nuclear data only, with salsa-aligned ITS2-sequences.
(TRE)
CONCATnuclx_ML.tre.
Resulting tree with support values, using Maximum Likelihood on nuclear data only, with xinsi-aligned ITS2-sequences.
(TRE)
ITS2x_TCS_log.rtf.
Log-file from the TCS-analysis on ITS2x-all.
(RTF)
COI_GMYC_support.xls.
Support-values for nodes from the GMYC-analysis on COI-unique.
(XLS)
ITS2s_GMYC_log.rtf.
Log-file from the GMYC-analysis on ITS2s.
(RTF)
Uniqhaplo.pl.
Pearl script originally downloaded from the web page of Dr. Naoki Takebayashi at University of Alaska Fairbanks (Department of Biology and Wildlife).
(PL)
COI-all.nex.
Alignment, in nexus-format, with all 462 COI-sequences.
(NEX)
ITS2x-unique.nex.
Alignment, in nexus-format, with the unique 136 ITS2-sequences, aligned with X-INS-i in MAFFT.
(NEX)
ITS2s-unique.nex.
Alignment, in nexus-format, with the unique 136 ITS2-sequences, aligned with RNAsalsa.
(NEX)
ITS2s-all.nex.
Alignment, in nexus-format, with all 402 ITS2-sequences, aligned with RNAsalsa.
(NEX)
COI_and_ITS2s.nex.
Alignment, in nexus-format, including specimens with both COI and ITS2-data, used in the STACEY analysis.
(NEX)
CONCATnuclx_BI.tre.
Resulting tree with support values, using Bayesian inference on nuclear data only, with xinsi-aligned ITS2-sequences.
(TRE)
CONCATs_ML.tre.
Resulting tree with support values, using Maximum Likelihood on the combined mitochondrial and nuclear data set, with salsa-aligned ITS2-sequences.
(TRE)
CONCATs_BI.tre.
Resulting tree with support values, using Bayesian inference on the combined mitochondrial and nuclear data set, with salsa-aligned ITS2-sequences.
(TRE)
COI_GMYC_log.rtf.
Log-file from the GMYC-analysis on COI-unique.
(RTF)
ITS2x_GMYC_support.xls.
Support-values for nodes from the GMYC-analysis on COI.
(XLS)
Specimen list.
List of sequenced specimens with voucher specification, site ID (see Table 1), sequence ID, and GenBank accession numbers.
(DOCX)
CONCATmito_BI.tre.
Resulting tree with support values, using Bayesian inference on mitochondrial data only.
(TRE)
CONCATx_ML.tre.
Resulting tree with support values, using Maximum Likelihood on the combined mitochondrial and nuclear data set, with xinsi-aligned ITS2-sequences.
(TRE)
CONCATx_BI.tre.
Resulting tree with support values, using Bayesian inference on the combined mitochondrial and nuclear data set, with xinsi-aligned ITS2-sequences.
(TRE)
ITS2s_TCS_log.rtf.
Log-file from the TCS-analysis on ITS2s-all.
(RTF)
ITS2x_GMYC_code_nodes.pdf.
Topology from the GMYC-analysis on ITS2s with node numbers.
(PDF)
Distances_COI.xlsx.
Uncorrected distances from COI-all data set.
(XLSX)
Benthic macrofauna is one of the most widely used biological groups to assess the ecological status of marine systems. Lately, attention has been paid to similar use of benthic foraminifera. In this study, distribution patterns of benthic foraminiferal and macrofaunal species were investigated simultaneously in 11 fjords in southeastern Norway in o...
Marine gruntvannsområder er de delene av saltvannsbunnsystemet M og marine vannmasser H som er i den eufotiske sonen, altså så dypt at nok lys trenger ned til at alger kan vokse. I 2018 ble 15 naturtyper vurdert, hvorav fire er vurdert som truet. Den viktigste påvirkningsfaktoren for nordlige tareskoger er kråkebollebeiting. I sør er økte temperatu...
Foreliggende vurdering omfatter marin natur i fjorder og kystområder på Svalbard. Svalbard omfatter etter Svalbardtraktaten de store øyene Spitsbergen og Nordaustlandet, alle omkringliggende øyer, samt Bjørnøya og Hopen.
https://www.artsdatabanken.no/Pages/259184
The red king crab invaded Norwegian coastal waters in the early 1990s after having been introduced from the northern Pacific to the Russian Barents Sea coast. The crab stock increased rapidly in NE northern Norway in the latter half of the 1990s, and since 2002 there has been a commercial fishery in the eastern invaded areas. The crab is an active...
Not much is known on polychaete diversity in the deep Nordic Seas. Based on data from extensive sampling over three decades, new data on polychaetes covering depths from 550 m to 3,800 m are presently reported. On a depth gradient, the number of polychaete families gradually declined from 35 at the upper slope (500–750 m) to 11 at 3,800 m. Species...
Data from large sampling programmes for the mapping of marine invertebrates in the Oslofjord, Norway, and the Skagerrak, spanning more than six decades, are compiled and digitized to provide easy access in modern data repositories. Two sampling programmes undertaken in the period 1950–55 are still the most extensive mapping of marine benthic fauna...
Early descriptions of species from Norwegian waters are reviewed, with a focus on the basic requirements for reassessing their characteristics, in particular, by clarifying the status of the original material and locating sampling sites. A large number of polychaete species from the North Atlantic were described in the early period of zoological st...
Until recent years, only a few scalibregmatid species have been known from the Nordic Seas, largely from shelf and coastal waters. Access to a large collection from deep areas has made it possible to provide more knowledge on the diversity of this group in the area. Pseudoscalibregma parvum (Hansen, 1879) is here redescribed. The species has a wide...
The biological reason for a species' presence under given environmental conditions is that the species possesses traits that make establishment and survival, usually also reproduction, possible under these conditions. Biological traits analysis (BTA), when coupled with environmental variables, can provide information regarding which traits are to b...
The red king crab (Paralithodes camtschaticus) is an alien species in the Barents Sea area. The crab has been established in eastern Finnmark since the 1990s, and is presently spreading westwards and
into the fjords in Finnmark. During spring 2011 large numbers of young specimens were observed in
shallow water areas in the inner part of Porsangerfj...
The polychaete macrofauna of the northern Mid-Atlantic Ridge between the Azores (42 degrees N) and the southern tip of the Reykjanes Ridge (54 degrees N) was studied based on the material obtained during the R/V G.O. Sars MAR-ECO cruise in 2004 and the two RRS James Cook ECOMAR cruises in 2007 and 2009. Polychaetes were collected from 28 trawl catc...
At the request of the Norwegian Government, a comprehensive index aimed at monitoring the state of and trends in biodiversity across and within all aquatic and terrestrial ecosystems has been developed and implemented in Norway. The Nature Index (NI) aggregates information from a number of standardised indicators representing species, diversity mea...
In the present study, biological traits analysis (BTA) was used to explore and characterise effects of pollution on functional attributes of soft bottom infaunal species assemblages. The data comprised 38 sampling stations in the Oslofjord, Norway, ranging from heavily polluted to minimally impacted areas. At each station, species composition (113...
Six species of Ophelina Ørsted, 1843 have been identified in an extensive material covering 145 localities from 575 to 3900 m depth in the Nordic Seas. Ophelina opisthobranchiata Wirén, 1901 and O. helgolandiae Augener, 1912 were recorded for the first time since their original description about a century ago. O. opisthobranchiata was the most abun...
The red king crab (Paralithodes camtschaticus) was introduced from the northern Pacific to the Russian Murman coast during the 1960s and 1970s. Over the subsequent decades,
the crab has become established in northern Norwegian waters, where it continues spreading westward. The crab is an active
predator on benthic fauna, especially feeding in deep...
The North Sea Benthos Project 2000 was initiated as a follow-up to the 1986 ICES North Sea Benthos Survey with the major aim to identify changes in the macrofauna species distribution and community structure in the North Sea and their likely causes.The results showed that the large-scale spatial distribution of macrofauna communities in the North S...
Evolution through time of NI values per municipalities averaged across
oceanic, coast and terrestrial major ecosystems.
(PDF)
Excel file. Detailed list of indicators collected for the NI project in
Norway.
(XLSX)
Practical implementations of the Nature Index.
(PDF)
Development of thematic indexes within the NI framework
(PDF)
Definitions for the 9 major ecosystems used within the NI framework.
(PDF)
Effect of the weights on the Nature Index calculation
(PDF)
R source code for the implementation of the NI. As an example, data on the
indicators related to mountains in Norway are provided. The file can be
decompressed with Winrar.
(RAR)
Examples of practical definitions that can be used to estimate the value of
indicators in a reference state.
(PDF)
The magnitude and urgency of the biodiversity crisis is widely recognized within scientific and political organizations. However, a lack of integrated measures for biodiversity has greatly constrained the national and international response to the biodiversity crisis. Thus, integrated biodiversity indexes will greatly facilitate information transfe...
The geographic area covered by this guide is Norwegian waters. By Norwegian waters we include the Norwegian Economic Zone (200 nautical miles), the 200 mile zone around Svalbard and the 200 mile zone around the island of Jan Mayen. This makes up shallow coastal waters, deep sea areas in the Norwegian Sea as well as polar areas north and east of Sva...
Soft sediments cover most of the ocean seabed and often contain benthic communities with high biological diversity. Sediment-dwelling organisms depend on the substrate that they are attached to or live in, and species composition varies with sediment type. Macrofauna composition and diversity in soft sediments are commonly used as „„health indicato...
Effekter av kongekrabben på økosystemet på bløtbunn: undersøkelser i Varanger 2006-2009 Varangerfjorden utenfor Grense Jakobselv sett innover mot Bugøynes
A thorough literature review has been undertaken to establish the first complete account of polychaetes recorded from the area around the volcanic island of Jan Mayen. The annotated checklist lists 121 species-level taxa, representing an increase from the 75 species previously recorded. The checklist is based on existing records, supplemented with...
The macrofauna of the newly discovered hydrothermal vent field on the Mohn Ridge at 71°N was investigated. Samples were collected during the cruise BIODEEP 2006 using the ROV ‘Bathysaurus’. A total of 180 species-level taxa were identified. The region contains very few vent-endemic species, but some species of Porifera, Crustacea and Mollusca may b...
Marine miljøer omfatter vannmasser og bunn i alle sjøområder fra indre kyst til åpent hav. Brakkvann, som utgjør en blandingssone mellom ferskvann og sjøvann, regnes her med blant marine miljøer. De marine miljøer omfatter en rekke forskjellige naturtyper og økosystemer med ulike miljøbetingelser og forskjellig artssammensetning. Her gis en generel...
At present there is a need for ecological quality criteria in environmental management of the marine bottom environment. Unique long-time series of oxygen measurements exists for many fjord basins along the Norwegian Skagerrak coast where concentrations in bottom water have been measured since 1950 or earlier. Recently, several of these have experi...
The original description of Parophryotrocha isochaeta (Eliason, 1962; as Ophryotrocha (?) isochaeta) was based on three specimens collected in the deepest part of the Skagerrak in 1933. The species is here redescribed from new material collected at the type locality in 1990. Its most characteristic features pertain to jaw morphology and the presenc...
The original description of Parophryotrocha isochaeta (Eliason, 1962; as Ophryotrocha (?) isochaeta) was based on three specimens collected in the deepest part of the Skagerrak in 1933. The species is here redescribed from new material collected at the type locality in 1990. Its most characteristic features pertain to jaw morphology and the presenc...
Marine sill basins are generally characterized by vertically stratified water masses. During periods of water stagnation, the bottom fauna may be severely affected by the depletion of oxygen. In northern Norway, stratification is less and water exchange processes stronger than in topographically similar boreal basins, which would generally imply be...
