Tag Archives: change
Image Credit: Sandeeep Handa, Pixabay licence, Image Cropped
The Norwegian landscape is a beautiful thing. Spruce and pine groves piled on the side of mountains and fjords, moose and deer popping up in backyards, woodbirds flitting about on pristine hiking trails. Parrots screeching bloody murder into your ears as you re-enter the city.
No you did not read that wrong. It’s not happening yet, it in a couple of decades parrots, a type of bird not really associated with the sub-Arctic, could be a regular presence around Norwegian cities. So how could this happen, and why is it really quite concerning?
Image Credit: GuoJunjun, CC BY-SA 3.0 NO, Image Cropped
The Big Challenge Science Festival is currently in Trondheim, bringing a host of celebrities, scientists and futurists together. Their goal is to present solutions for the challenges the planet currently faces, and get people thinking about how they can adjust their lives to help the planet. While there are some big names in attendance, there are also a large number of local students and scientists working tirelessly on stands, and it’s them that I spent yesterday working alongside.
There’s some fantastic stuff on display. I was particularly impressed by the use of VR in a couple of exhibitions. One stand presented a worst case scenario for warming planet, with one of Trondheim’s most famous laneways submerged in water (although the man clinging to a floating car tire waving for assistance may somewhat disturb the kids). Nearby was another VR experience where you could shoot cars, carbon molecules and chimneys, transforming them into bikes, trees and solar panels respectively. The tent next to us had a great range of displays, presenting practical and simple options for living sustainably and also letting you snack on insects and other arthropods!
Our own stand was part of the Futurum exhibition, which postulated how Trondheim may look in 2050. It focussed on biodiversity, and how Trondheim’s wildlife will change over the next 30 years with increasing urbanisation and a warming climate. On loan from the Natural History Museum was a selection of species that could conceivably arrive in Trondheim with a 1-2 degree temperature increase. It was fun to see kids’ faces contort at the thought of a parrot being a common presence in Trondheim, but with Ring-Neck parrots already as far north as Brussels, it could happen within their lifetime.
I was pleasantly surprised at the willingness of some children to accept that new species weren’t necessarily a good thing. Most of them were entranced by the sight of a grey squirrel, but readily understood that it could mean the demise of the red squirrel and some local bird life. Likewise, I was surprised at how many parents could immediately recognise the species likely to disappear from Trondheim, and acknowledge how many more Black-Headed Gulls and Northern Lapwings they could see only twenty years ago.
It was also encouraging to see how many people have started to let portions of their garden grow wild in an effort to allow insects, and thus birds and mammals make their way back into urban areas. The exhibition had 2 fantastic videos compiled by Øystein Kielland focussing on the difference between a green area and a biodiverse one, and how fragmentation has devastated local plant and insect populations. So the number of adults who had already started letting areas around their house grow unchecked was encouraging. Two particular highlights were the couple who eagerly showed us the badger who had recently taken up residence in their backyard, and the girl who nodded eagerly and started telling me all about her insect hotels.
One thing I always struggle with in these situations is communicating uncertainty. Whilst it’s fun to see jaws drop at the thought of parrots in Norway, it’s difficult to communicate the ‘maybe’ factor in the amount of time it takes to engage someone in these issues. The point of the Big Challenge is to get people to act, so I hope that people walk away thinking that if they don’t start living more sustainably there could be huge species’ turnover, but I don’t want to present a worst case scenario, or talk in absolutes about issues that are very much only possibilities. So any success stories you’ve had communicating uncertainty in these scenarios would be very much welcome below!
I’ll be back at the Futurum exhibit at Krigseilerplass near the Royal Garden today. If you’re in Trondheim, I highly recommend stopping by. You can read more about the event here.
Growth is a critical aspect of life for all organisms, and understanding what can and cannot affect it allows us to predict what effect climate change may have on organisms like these zebrafish (Image Credit: Lynn Ketchum, CC BY-SA 2.0).
Warming increases the cost of growth in a model vertebrate (2019) Barneche et al., Functional Ecology, https://dx.doi.org/10.1111/1365-2435.13348
In ecology, how organisms grow is relevant across all levels of life. Growing faster than others can be selected for as an evolutionary advantage, if being bigger earlier means that you have a competitive advantage over other members of your species.
Because growth is so critical to life, it is important to understand what may affect the ability of an organism to grow. The only way an organism can grow is by converting energy it acquires from food to its own body mass, but outside influences, like temperature, can affect how efficient an organism is at this energy conversion. The authors of today’s paper wanted to investigate if this efficiency and the cost of growth itself changed across a range of projected temperatures.