Publications & Results

The results of ECOTIP, which include journal articles, book chapters, poster presentations, conference presentations and any relevant media material (e.g. videos), are hosted on Zenodo, which is an open-access repository. The most recent results are shown on this page. We encourage you to visit the ECOTIP Community on Zenodo for a full overview of results. You can also follow the project through Researchgate.

Presentation Open Access
Arctic biodiversity change and its consequences: Assessing, monitoring and predicting the effects of ecosystem tipping cascades on marine ecosystem services and dependent human systems (ECOTIP)
Koski, Marja

A short presentation by Marja Koski, Coodinator of the Horizon 2020 ECOTIP project, delivered to the European Polar Science Week, 26-30 October 2020. Find out more about ECOTIP here: https://ecotip-arctic.eu Read more... >>

Published on Oct. 26, 2020
Publication-Article Open Access
Aggregate-colonizing copepods in a glacial fjord: Population dynamics, vertical distribution and allometric scaling of growth and mortality rates of Microsetella norvegica and Oncaea spp.
Koski, Marja; Swalethorp, Rasmus; Kjellerup, Sanne; Nielsen, Torkel Gissel

Abstract: Most global analysis on the role of copepods in food web efficiency or carbon sequestration ignore the har-pacticoid or poecilostomatoid copepods that are under-estimated in traditional zooplankton surveys and under- studied with respect to their ecology and behavior. Nevertheless, when small-mesh-size nets are used these groups appear to dominate zooplankton abundance and sometimes even biomass from Arctic to tropical seas. We studied the seasonal succession of abundance, body size, vertical distribution, reproduction, growth and mor-tality of two aggregate-colonizing copepods, Microsetella norvegica and Oncaea spp. in a glacial fjord, to inves-tigate the allometric scaling of their vital rates and the correlation between their reproduction, mortality and vertical distribution and environmental variables. Although both species are known to feed on marine snow, they differed in population dynamics, vertical distribution and environmental tolerance. Also, in contrast to most sac- spawning copepods, both M. norvegica and Oncaea spp. had a high specific mortality of eggs and early naupliar stages, and the allometric scaling of their egg size and growth differed from calanoid and cyclopoid copepods. Our results suggest that these non-calanoid copepods do not necessarily share the same habitat or respond similarly to the environment, and that our understanding of the allometric scaling of copepods is incomplete if we do not consider these copepod groups. M. norvegica and Oncaea spp. form by virtue of their high abundance an important part of oceanic food webs, and should be included if we are to understand the future of the ocean ecosystems. Read more... >>

Published on Sept. 1, 2021
Publication-Deliverable Open Access
ECOTIP D5.1 Project Website including dedicated intranet portal
Alfthan, Björn; Bhakta, Debhashish; Lindebjerg, Runa

This deliverable report 5.1 "Project Website including dedicated intranet portal" summarizes the website structure and functionality of the H2020 ECOTIP project website ecotip-arctic.eu. The website was developed at GRID-Arendal with input primarily from DTU and IOPAN and all partners, to fulfill part of the communication and dissemination needs of the project. Read more... >>

Published on Dec. 1, 2020
Publication-Deliverable Open Access
ECOTIP D5.4 Plan for the Exploitation and Dissemination of Results
Alfthan, Björn; Palacz, Artur Piotr; Schoolmeester, Tina; Jonasdottir, Sigrún

This deliverable report 5.4 “Plan for the Exploitation and Dissemination of the Results (PEDR)” presents the Plan in detail including identifying the expected results and impact of the project, the results stakeholders, and how we plan to reach them. It includes guidelines for project partners on publishing of results in a consistent manner including roles and responsibilities. Read more... >>

Published on Nov. 30, 2020
Publication-Article Open Access
Distinct Seasonal Primary Production Patterns in the Sub-Polar Gyre and Surrounding Seas
Richardson, Katherine; Bendtsen, Jørgen

Primary production (PP) in the sub-polar region appears to be important for ocean carbon uptake but how the different water masses contribute to the PP occurring here has not yet been described. Using two models based on satellite observations of surface chlorophyll, light and temperature, seasonal patterns in the distribution of PP are shown here to differ in the sub-polar gyre south of the Greenland-Scotland Ridge (GSR) and surrounding water masses. Monthly averages of PP (2003–2013) were determined. Total and seasonal PP were similar in both models. Average PP in five of the domains (0.47–0.77 g C m–2 d–1) was well above the global average (0.37 g C m–2 d–1). Over the East Greenland shelf, however, total annual PP was estimated to be only 0.19 g C m–2 d–1. The Norwegian shelf was the most productive of the regions studied. “Spring blooms” appear sporadically as spikes in the annual distribution of PP in some regions/years, but do not emerge as a dominant feature in the average annual development of PP in any of the domains. For all regions, ∼25% of the annual PP takes place in the period January-May. PP peaked over most of the study area at or around maximum insolation or temperature. PP in the study region as a whole appears to be more related to latitude or water masses than to bathymetry. In waters over the East Greenland shelf, the Norwegian shelf, and north of the GSR up to 50% of annual PP had taken place when ∼50% of the annual flux of light has reached the surface. In contrast, only about 35% of annual PP had taken place in the sub-polar gyre and waters over the southern open shelf by this time. Light-use efficiency differences may be explained by differences in mixed layer depth (MLD). Multi-model Earth System model studies have indicated that climate change may decrease the MLD in the sub-polar gyre and suggest this may lead to a decrease in the PP occurring here. The results presented here, however, suggest that a shallower MLD could lead to an increase in PP. Read more... >>

Published on Dec. 9, 2021
Publication-Article Open Access
Comparative analysis of six common foraminiferal species of the genera Cassidulina, Paracassidulina and Islandiella from the Arctic-North Atlantic domain.
Cage; Pieńkowski; Jennings; Knudsen; Seidenkrantz

Abstract. Morphologically similar benthic foraminiferal taxa can be difficult to separate. Aside from causing issues in taxonomy, incorrect identifications complicate our understanding of species-specific ecological preferences and result in flawed palaeoenvironmental reconstructions and geochemical results. Over the years, a number of studies have grouped together several key Arctic–North Atlantic species in various combinations, despite their distinct environmental preferences and/or stratigraphical differences, causing great confusion in the literature. These species include Cassidulina laevigata, Cassidulina neoteretis, Cassidulina teretis, Paracassidulina neocarinata, Islandiella helenae, and Islandiella norcrossi. Here, we provide for the first time a detailed comparison of these taxa. We present a compilation of the original species descriptions, along with clear, illustrated guidelines on how to separate these taxa to circumvent taxonomic confusion. We acknowledge that some features cannot easily be seen with a standard low-powered microscope, especially if specimens are not well preserved. In those cases, we recommend the following actions: (i) always strive to make a precise identification and at least differentiate between the three genera; (ii) where C. neoteretis and C. teretis cannot be separated, and where the stratigraphical context does not make the species identification obvious, specimens belonging to these taxa should be reported as C. teretis/C. neoteretis; and (iii) where specimens in a sample cannot be confidently assigned to a specific species of Islandiella or Cassidulina, specimens should be grouped as Islandiella spp. or Cassidulina spp., followed by naming the most dominant species in brackets. The improved identification of Cassidulina, Paracassidulina, and Islandiella specimens will ensure development of a better understanding of the ecological affinities of these key Arctic–North Atlantic taxa, consequently resulting in more accurate palaeoenvironmental reconstructions and geochemical data. Read more... >>

Published on March 26, 2021
Publication-Deliverable Open Access
ECOTIP D5.2 Communication Strategy
Alfthan, Björn; Lindebjerg, Runa; Schoolmeester, Tina; Jonasdottir, Sigrún; Koski, Marja; Hymas, Lisa; Palacz, Artur Piotr

This deliverable report 5.2 “Communication Strategy” has been developed to guide the strategic development and use of various communication tools in order to achieve ECOTIP’s overall objectives and stated impact. Read more... >>

Published on Nov. 30, 2020
Video Open Access
ECOTIP - investigating tipping cascades in the Arctic seas
Alfthan, Björn; Lindebjerg, Runa; Rempel, Olivia; De Luigi, Guendalina

ECOTIP is a new European Horizon 2020 project led by the Technical University of Denmark and involving world class scientists from across Europe, Japan and North America, which seeks to understand the impact of climate change on biodiversity in the Arctic seas and its impact on fisheries and local and Indigenous communities, particularly in Greenland. Follow us at ecotip-arctic.eu/, @EcoTipArctic on Facebook and #EcoTipArctic on Twitter and Instagram. Read more... >>

Published on Jan. 26, 2021
Publication-Article Open Access
Late Glacial and Holocene shore-level changes in the Aarhus Bugt area, Denmark
Bennike, Ole; Andresen, Katrine Juul; Astrup, Peter Moe; Olsen, Jesper; Seidenkrantz, Marit-Solveig

Abstract: We propose a new relative shore-level curve for the Aarhus Bugt area, an embayment in eastern Jylland, Denmark, based on a compilation of pub- lished and new radiocarbon ages of organic material. Lakes existed in the area during the Late Glacial and Early Holocene. Lake level rose gradually until the region was inundated by the sea at c. 9000 cal. years BP. The relative sea level reached a high stand at about 6000 cal. years BP, when the local relative sea level was c. 3 m above present-day mean sea level. The Aarhus Bugt area was inundated by the sea later than the Limfjord area in northern Jylland, but earlier than the Lillebælt region in southern Denmark. The shore- level curves for these areas differ partly because the glacio-isostatic uplift was more pronounced in the Limfjord area than farther south and partly because the northern regions were inundated by the sea earlier than the southern areas. Read more... >>

Published on Sept. 23, 2021
Publication-Article Open Access
Seasonal climate variations in the Baltic Sea during the Last Interglacial based on foraminiferal geochemistry
Ni, Sha; Quintana Krupinski, Nadine B.; Chonewicz, J.; Groeneveld, Jeroen; Knudsen, Karen Luise; Seidenkrantz, Marit-Solvieg; Filipsson, Helena L.

Abstract: Climate during the Last Interglacial period (LIG, Marine Isotope Stage 5e) was on average warmer than the present, with a higher global sea level but also more unstable conditions. Today, the Baltic Sea interacts strongly with conditions in the North Atlantic region, and this interaction was likely even stronger during the LIG. We here present a reconstruction of seawater conditions during the LIG based on benthic foraminiferal geochemistry (stable isotopes and trace elements) and compare these records with modern marine monitoring data to evaluate seasonal hydrographic conditions in the western and southern Baltic Sea during the first half of the LIG (130e123 ka BP). Our reconstructions reflect the evolution of seasonal temperature and salinity, rather than annual mean conditions. The spring LIG bottom water temperatures in the Skagerrak and Kattegat were ~2e3 C higher compared to the modern spring bottom water temperatures. During the LIG, there was an increase in seasonality in bottom water temperature (progressively warmer summers and cooler springs) in the southern Baltic Sea, which can be linked to seasonal insolation changes. Moreover, our data suggest a decreased gradient of bottom water salinity along a transect through the Skagerrak-Kattegat-Danish Straits-southern Baltic Sea, supporting previous investigations inferring a stronger ocean-water influx into the Baltic Sea during the LIG than at present. Read more... >>

Published on Dec. 10, 2021
Poster Open Access
ECOTIP roll up
Heerema, Sabrina; Alfthan, Björn

Roll up describing the objectives of the ECOTIP project. Read more... >>

Published on Nov. 16, 2021
Publication-Deliverable Open Access
ECOTIP D5.3 Initial Data Management Plan
Wichorowski, Marcin; Palacz, Artur Piotr; Jacobsen, Rikke Becker

This deliverable report 5.3 "Initial Data Management Plan" contains an initial version of ECOTIP's data management plan to meet the requirements of an Open Research Data Pilot (ORDP) and to support dissemination and exploitation of newly collected observations and model results, along with their analysis and synthesis. The Data Management Plan of ECOTIP will lay out the means of making data available in a readily useable format, optimizing handling of data from discovery to publication, and facilitating data exploitation by the wider community. To this end, the project will adhere to FAIR (findable, accessible, interoperable and reusable) data principles. Read more... >>

Published on Nov. 30, 2020
Publication-Report Open Access
ECOTIP flyer
Heerema, Sabrina; Alfthan, Björn

A short flyer which communicates the goals of ECOTIP and includes an illustration, map of study sites and list of partners. Read more... >>

Published on Nov. 30, 2021

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