E. Rinde

Norwegian Institute for Water Research | NIVA · Section for Marine Biology

The spatial distribution of kelp (Laminaria hyperborea) and sea urchins (Strongylocentrotus droebachiensis) in the NE Atlantic are highly related to physical factors and to temporal changes in temperature. On a large scale, we identified borders for kelp recovery and sea urchin persistence along the north-south gradient. Sea urchin persistence was...

A comprehensive expert consultation was conducted in order to assess the status, trends and the most important drivers of change in the abundance and geographical distribution of kelp forests in European waters. This consultation included an on-line questionnaire, results from a workshop and data provided by a selected group of experts working on k...

We compared populations of Laminaria hyperborea from different regions along the Norwegian coast (58–71N). The aim of the study was to examine possible regional differences in population demography and to relate these to latitudinal gradients in ambient temperature and light. A number of population parameters were examined in understory and canopy...

The Pacific oyster, Crassostrea gigas, is an invasive species with a large increase in prevalence globally, and with potential of spreading even more because of climate-change effects. We examined how future climate might affect its potential for spread at its northern distribution limit in a temperate ecoregion, by simulating spawning, larval disp...

A test deployment of a time-lapse camera lander in the deep Oslofjord (431 m) was used to obtain initial information on the response of benthic fauna to macroalgal debris. Three macroalgal species were used on the lander baited plate: Fucus serratus, Saccharina latissima and Laminaria hyperborea and observed during 41.5 hours. The deep-water shrimp...

Seagrass meadows are well-known for their capacity to capture and store blue carbon in sediments. However carbon stocks vary significantly between meadows, spanning more than three orders of magnitude on both local and global scales. Understanding the drivers of seagrass carbon stocks could help improve strategies for incorporating blue carbon into...

In 2013, a large scale (70 hectare) kelp forest restoration experiment was conducted in a sea urchin barren that had been stable for 45 years. We used 200 tons of quicklime to eradicate the sea urchin population. Kelp recovered within a year in the lime-treated sites. Quickliming did not significantly affect the abundance of non-target species. Mob...

Rhodolith beds are diverse and globally distributed habitats. Nonetheless, the role of rhodoliths in structuring the associated species community through a hierarchy of positive interactions is yet to be recognised. In this review, we provide evidence that rhodoliths can function as foundation species of multi-level facilitation cascades and, hence...

In 2013 we initiated a large-scale (70 hectare) kelp forest restoration experiment in a sea urchin induced kelp barren that had been stable for 45 years. We used 200 tons of quicklime for sea urchin culling. The immediate high sea urchin mortality was followed by recovery of kelp species within a year. Quickliming did not significantly affect the a...

Global marine conservation remains fractured by an imbalance in research efforts and policy actions, limiting progression towards sustainability. Rhodolith beds represent a prime example, as they have ecological importance on a global scale, provide a wealth of ecosystem functions and services, including biodiversity provision and potential climate...

Hanging gardens - comparing fauna communities in kelp farms and wild kelp forests. https://iss2023.net/2022/08/22/hanging-gardens-do-floating-kelp-farm-communities-resemble-natural-kelp-forests/ Listen to the presentation on YouTube: https://www.youtube.com/watch?v=rhl4qiqncFU

A growing need for food is causing increased interest for seaweed farming globally. This requires the knowledge of the industry’s effects on the marine environment. We therefore aimed to explore the communities hosted by a kelp farm compared to that of wild kelp forests. The study was performed in mid-western Norway. Kelp associated fauna were coll...

Presenting Kelp restoration actions in Norway, 1988-2022. Talk and published abstract at the 24th International Seaweed Symposium 20.02.2023, Hobart, Tasmania. https://iss2023.net/2022/11/10/norwegian-kelp-forest-restoration/ Listen to the presentation on YouTube: https://www.youtube.com/watch?v=AFRFC74zR2Y

Kvile, KØ, Bekkby T, Rinde E. 2023. Kap. 4 Ålegrasenger i rapporten Kunnskapsstatus Trondheimsfjorden – en kunnskapssammenstilling om miljøtilstanden i Trondheimsfjorden. Trondheim fylkeskommune, 364 s. https://www.trondelagfylke.no/contentassets/3f3e42db94344407941a25ad3c475640/kunnskapsstatus-trondheimsfjorden-hoyopploselig-1.pdf

Bekkby T, Andersen GS, Dolan M, Rinde E, Thormar J, Haugland BT, van Son TC, Bryn A. 2023. Metodehåndbok marint – Kartleggingsmetodikk og variabler (NiN 3.1). Artsdatabanken-rapport. ISBN: 978-82-92838-65-5. https://artsdatabanken.no/Files/55166/Marin_metodeh_ndbok_NiN_3.0._Kartleggingsmetodikk_og_variabler.pdf

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...

Talk at the Annual meeting of the Norwegian Association of Marine Scientists, 22-23.11.2022, Asker, Norway

Kelp forests are productive coastal ecosystems that provide a range of ecosystem services. Mapping the distribution and area occupied by kelp forests is a critical step to identify their ecosystem functions and services, including their role in the carbon cycle, and to detect changes in their distribution. We compiled quantitative data of the domin...

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...

Våre undersøkelser i Oslofjorden viser forekomst av flere av de samme fremmede artene som det som er funnet i tidligere undersøkelser. Vi fant både stillehavsøsters, japansk spøkelseskreps, strømgarn, japansk sjølyng, djeveltunge og tøffelnegl. Flest arter og individer ble observert på den innerste stasjonen i indre Oslofjord (Oksval) og på Ula på...

The aim was to acquire knowledge about a selection of marine habitats in the Oslofjord, while also gaining practical experience with the NiN habitat classification system as a tool to meet the needs of management authorities. We also wanted to gain knowledge about changes in habitats previously mapped by the National Program for Mapping Biodiversit...

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...

Information about the distribution of a study object (e.g., species or habitat) is essential in face of increasing pressure from land or sea use, and climate change. Distribution models are instrumental for acquiring such information, but also encumbered by uncertainties caused by different sources of error, bias and inaccuracy that need to be deal...

Coralline red algae in the non-geniculate genera Clathromorphum, Phymatolithon and Lithothamnion are important benthic ecosystem engineers in the photic zone of the Arctic and Subarctic. In these regions, the systematics and biogeography of Clathromorphum and Phymatolithon have mostly been resolved whereas Lithothamnion has not, until now. Seventy-...

There is an increasing focus on ecosystem services provided by macroalgae worldwide, many which depend on its structural and morphological characteristics. Here we investigated how characteristics of canopy kelp plants of Laminaria hyperborea varies along the Norwegian part of the NE Atlantic. Ten characteristics related to size, allometry, density...

Formålet med prosjektet har vært å skaffe kunnskap om et utvalg marine naturtyper i Oslofjorden, og samtidig skaffe praktisk erfaring med NiN-systemet som verktøy for å dekke miljøforvaltningens behov. Gjennom feltkartlegging har vi skaffet kunnskap om endringer i naturtyper som er kartlagt tidligere i Nasjonalt program for kartlegging av biologisk...

Marine ecosystem engineers such as seagrasses and bivalves create important coastal habitats sustaining high biodiversity and ecosystem services. Restoring these habitats is difficult due to the importance of feedback mechanisms that can require large‐scale efforts to ensure success. Incorporating facilitative interactions could increase the feasib...

The aim was to acquire knowledge about a selection of marine habitats in the Oslofjord, while also gaining practical experience with the NiN habitat classification system as a tool to meet the needs of management authorities. We also wanted to gain knowledge about changes in habitats previously mapped by the National Program for Mapping Biodiversit...

Chemical ecology has been suggested as a less time-consuming and more cost-efficient monitoring tool of seagrass ecosystems than traditional methods. Phenolic chemistry in Zostera marina samples was analyzed against latitude, sea depth, sample position within a seagrass meadow (periphery or center) and wave exposure. Multivariate data analysis show...

Global change and anthropogenic pressures have a major impact on ecosystems, leading to degradation of ecosystem functioning and service and loss of biodiversity. To slow down or stop the degradation within European seas, the EU Biodiversity Strategy 2020 aims to restore at least 15% of degraded ecosystems by the end of 2020. Marine ecosystems rest...

Despite many theories, the recent evident decreases in blue mussel (Mytilus edulis) abundance in southern Norway and western Sweden (eastern North Sea) have not yet been explained. To test the possible role of increased predation, an ongoing mesocosm experiment exploring general effects of two mesopredators on the structure of littoral macroalgal a...

To understand the restoration potential of degraded habitats, it is important to know the key processes and habitat features that allow for recovery after disturbance. As part of the EU (Horizon 2020) funded MERCES project, a group of European experts compiled and assessed current knowledge, from both past and ongoing restoration efforts, within th...

Vegetated marine and freshwater habitats are being increasingly lost around the world. Habitat restoration is a critical step for conserving these valuable habitats, but new approaches are needed to increase restoration success and ensure their survival. We investigated interactions between plants and bivalves through a review and analysis of 491 s...

From 2007 to 2010 the Ministry of Climate and Environment (KLD), the Ministry of Trade, Industry and Fisheries (NFD) and the Ministry of Defence (FD) funded the National program for mapping and monitoring of biodiversity - marine. The mapping was based on DN handbook 19-2001, revised in 2007. After this work the scientific group (Norwegian Institut...

With the increasing imperative for societies to act to curb climate change by increasing carbon stores and sinks, it has become critical to understand how organic carbon is produced, released, transformed, transported, and sequestered within and across ecosystems. In freshwater and open-ocean systems, shredders play a signi cant and well-known role...

Talk at the seminar Din Oslofjord

NIVA report 7420-2019

This study analyses the combined impact of two types of ocean water flow, wave exposure and ocean currents, on kelp Laminaria hyperborea abundance, taking other environmental co-variables into account. The dataset covers many ecoregions along the NE Atlantic (Norwegian) coast, including both the Skagerrak, the North Sea and the Norwegian Sea, from...

In Norwegian only: Veilederens hovedformål er å bidra til at resultatene av praktisk kartlegging i sjø i henhold til NiNs type og beskrivelsessystem blir så gode som mulig og sammenlignbare på tvers av kartleggere. Dette innebærer å beskrive hvordan, og i hvilken grad, den observerte naturvariasjonen bør forenkles under kartlegging. Veilederen skal...

Around year 2000, sugar kelp (Saccharina latissima) forests were observed to disappear in southern parts of Norway, being replaced by mats of turf algae (i.e., filamentous ephemeral algae) loaded with sediments. Among more than 600 stations covering 35 000 km of coastline, about 80% on the Skagerrak coast and about 40% on the North Sea coast were d...

Ongoing changes along the northeastern Atlantic coastline provide an opportunity to explore the influence of climate change and multitrophic interactions on the recovery of kelp. Here, vast areas of sea urchin‐dominated barren grounds have shifted back to kelp forests, in parallel with changes in sea temperature and predator abundances. We have com...

Talk at the Norwegian Association of Marine Scientists annual meeting in Tromsø, Norway

Talk at the Norwegian Association of Marine Scientists annual meeting in Tromsø, Norway.

Talk at the Norwegian Association of Marine Scientists annual meeting in Tromsø, Norway.

Coralline algae form extensive maerl and rhodolith habitats that support a rich biodiversity. Calcium carbonate harvesting as well as trawling activities threatens this ecosystem. Eleven species were recorded so far as maerl-forming in NE Atlantic, but identification based on morphological characters is unreliable. As for most red algae, we now use...

This is a very short presentation given at NIVAs yearly institute seminar in January 2018.

The CoralAlg-project, funded by the Norwegian Biodiversity Information Center, aims at assessing the coralline species diversity of maerl beds along the Norwegian coast. Toward this goal, molecular systematic methods were used along with traditional morphological studies for species identification. Corallines typically show high levels of morpholog...

Poster at the VI International Rhodolith Workshop 25-29.06.2018, Roscoff, France

Talk at the 4th International Symposium on Research and Management of Eutrophication in Coastal Ecosystems (EUTRO 2018), 18-20.062018, Nyborg, Denmark.

Poster with an oral introduction at the GEOHAB Conference May, Santa Barbara, California, USA, 7-11. May 2018.