Clearing for palm oil forests in Borneo. Norway recently made headlines with a government mandated reduction in palm oil imports, but there were of course those who found a negative here (Image Credit: T. R. Shankar Raman, CC BY-SA 4.0, Image Cropped)
Tag Archives: whale
Rasmus Hansson, former leader of the Norwegian Green Party and the Norwegian WWF (Image Credit: Miljøpartiet de Grønne, CC BY-SA 2.0)
Environmental politics is a tricky business. We live in a world where environmental crises are at the forefront of the news cycle, and in which science is simultaneously becoming the subject of distrust. So it makes sense that at this point, politics should be adapting and evolving as science does.
So when Rasmus Hansson stopped by NTNU last month, Sam Perrin and I took the chance to sit down with him and see whether this was the case. Rasmus studied polar bears at NTNU in the 70s, before later becoming the leader of the World Wildlife Fund in Norway and then of the Norwegian Green party. We spoke with Rasmus about the transition from conservation to politics, the clash of ideologies and the future of environmental politics.
The thought of an orca playing with its food – a cute seal – can be a grim one. But is it useful to project our ideas of morality and emotion onto other species? (Image Credit: Christopher Michel, CC BY 2.0, Image Cropped)
Guest post by Mary Shuttleworth
Scene: A lone seal on a piece of ice, surrounded by an expanse of deep and frosted blue. The scene would be romantic, except the water is rippling. Every now and then dark fins with streaks of white emerge, jostling the ice. It is an orca, and it is in training. Members of its family, or pod, are nearby, watching it as it practices how to take down its prey. The seal is in distress, stress resonating throughout its body. If they have noticed, the orcas take no notice. They are learning how to hunt. More than that, it appears that they could even be playing.
Image Credit: Aquaman, 2019
We look at the world of Atlantis from 2018’s Aquaman. Why would you domesticate a whale? Can a turtle grow to the size of a Great White Shark? Can an octopus play the drums? Spoiler alert: probably not.
5:48 – The History of Aquaman
10:33 – The Ecology of Atlantis
38:43 – The Karathen vs. Gypsy Danger (Pacific Rim)
Long-distance migration of prey synchronizes demographic rates of top predators across broad spatial scales (2016) Ward et al, Ecosphere, DOI: https://doi.org/10.1002/ecs2.1276
Populations that experience some kind of connection are classified as “meta-populations”, as they are all interconnected in some way and can influence one another. Although these populations may be geographically and reproductively isolated, meaning that they are in different places and the organisms from the different populations don’t breed with one another, certain environmental factors may cause these populations to grow or shrink in similar ways.
The key to understanding how this synchrony between the varying populations happens is understanding what connects them. Killer whale (orca) populations in the northeast Pacific Ocean inhabit three distinct areas, with orcas from the northern and southern populations never coming into contact with one another. They do, however, feed on the same salmon populations that migrate from where the southern population lives to the where the northern lives. The authors wanted to find out if this connection via a food source could result in the demographic rates of these distant populations syncing up.