Blogs - Page 2

Published Feb. 5, 2016 11:21 AM

A recently paper published in PNAS,  members of the CEES Marine Group explore potential climate effects on Calanus finmarchicus, a key zooplankton species in the North Atlantic. The paper shows how the combination of shallow mixed-layer-depth and increased wind apparently increases chlorophyll biomass in spring, and in turn C. finmarchicus biomass in summer. These findings strongly suggest bottom-up effects of food availability on zooplankton, and highlight the need to consider climate effects “beyond temperature” when projecting zooplankton dynamics under climate change.

Published Jan. 22, 2016 1:00 AM

Marine phytoplankton contribute nearly 50% to global primary production, support zooplankton production and play a vital role in regulating Carbon sequestration. Phytoplankton productivity fluctuations are caused by various direct and indirect effects of temperature, the balance of which show large-scale geographical patterns. 

Published Dec. 18, 2015 1:00 AM

Friday 11 December 2015, Kristina Øie Kvile has defended her PhD about the climate effects on Calanus finmarchicus dynamics with success. 

Published Dec. 4, 2015 1:00 AM

Penguins are highly visible species for the public. Their life has been portrayed in many movies. Unfortunately they are also species impacted by climate change. In a recent publication a team led by Charles Bost used long-term data to relate the large-scale climatic anomalies in the Southern Hemisphere to the foraging behaviour and population dynamics of the king penguin.

Published Nov. 12, 2015 7:05 PM

Interdisciplinarity is a central focus for many funding agencies. The argument for this is that only with scientists working together that some of the major questions of today could be answered. In a recent paper, a collection of students and post-doc from the NorMER network explored the difference of perception of scientists in function of their discipline: social science or natural science.

Published Sep. 4, 2015 1:00 AM

Opening the sea areas around Lofoten and Vesterålen islands for petroleum activities is a highly debated topic. One of the main concerns has been to what extent an accidental oil-spill may affect the ecologically and economically important species of fish that spawn in the area. We have investigate how an increased mortality event at the egg and larval stage in cod may affect the population.

Cava bottle
Published July 7, 2015 3:24 PM

In June this year, 50 Master students finished their degrees with the Department of Biosciences. And I was one of them! I turned in the final draft of my Master's thesis on June 1st. And on June 18th, I presented, defended, and became a Masters of Science. Once approved, Master's theses are digitally published on DUO. Read on for information about what to expect from a Master's exam and our traditional celebrations at IBV.

Published June 5, 2015 1:00 AM

A fundamental challenge for European Marine Science is to deliver scientific impact, global leadership and sustainable blue growth for Europe in times of overexploitation, climate change and other anthropogenic stressors. The Marie Sklodowska-Curie Innovative Training Networks MARmaED project makes important steps to answer this challenge by connecting science, policy and people, thus transcending national borders, disciplinary barriers and sectorial divides.

Published May 22, 2015 10:41 AM

Spatial Ecosystem models can be useful but need to be validated with data. Our study validates for the first time the spatial version of the commonly used Ecopath with Ecosim ecosystem modelling suite. We find that spatial distribution of fish species is well predicted by the model, but fishing effort distribution is not.

Published Mar. 27, 2015 1:01 AM

Many marine fishes experience tremendous mortality during their first months of life. Understanding the causes of this mortality and why it varies from year to year has challenged fisheries ecologists for more than a century. Part of the difficulty comes from the fact that many fishes have free-floating larvae. It is therefore difficult to follow a group of fish larvae over time in the field and investigate which factors cause mortality.

Published Mar. 13, 2015 12:01 AM

Since Hjort’s ground-breaking work, it is admitted that the survival from the egg to the first reproduction is an essential factor affecting the dynamics of fish populations (see post). Human activities around spawning ground may have an effect on the mortality of the younger age. One of such potentially risky activity is oil exploitation which is on the increase in the northern areas.

Published Mar. 8, 2015 4:59 PM

In honor of International Women's Day, I present the story of one seaweed scientist who unknowingly saved the nori industry and made it possible for sushi to become a global food.

Published Feb. 18, 2015 4:14 PM

Much of our present knowledge on the ecology and behaviour of animals is derived from longitudinal studies of individuals using long-term datasets. The collection of such datasets requires the ability to identify individuals repeatedly over time, i.e. by individual markings. Here comes the problems for Penguins.

Published Feb. 6, 2015 12:01 AM

The fascination for the High North is an important element of the Norwegian heritage, symbolized by explorers such as Roald Amundsen and Fridtjof Nansen. And as climate change pushes the limits of exploitable areas northward, the Arctic is again central in the political debate. With commercial opportunities facing environmental challenges, we need knowledge about the North, communication between stakeholders, and leaders with an Arctic heart. Enter, Emerging Leaders!

Published Jan. 30, 2015 12:01 AM

Europe and other funding agencies are very attentive to interdisciplinarity and trans-sectoral activities. Their ever growing demand for multi- and trans-disciplinary science is reaching such a level that making Ecology and getting funding for it becomes a challenge. Is there a way around it?

Published Jan. 18, 2015 3:37 PM

Some while ago a student asked us if we were collecting data in the marine ecological group at CEES. We were forced to acknowledge that we were not.  From this follows a real cri de coeur: “but we are only scavengers!” Are we really? If we are, is it all bad?

Published Jan. 9, 2015 12:01 AM

Phytoplankton biomass is controlled by a combination of “bottom-up” factors such as temperature, light and nutrients and “top-down” factors, in particular zooplankton predation. In a recent study we analysed large-scale data on ocean chlorophyll, copepod abundance and temperature in order to assess the general importance of bottom-up and top-down factors in controlling phytoplankton biomass.