Author Archives: Sam Perrin

Daniella Rabaiotti: Fitting Flatulence Facts Into a PhD

Image Credit: Daniella Rabaiotti, CC BY 2.0, Image Cropped

A PhD can be an incredibly stressful experience for a young scientist. Time runs low, stress levels run high. Just yesterday, Nature released an article that claimed the situation could be worsening, with more than a third of PhD students surveyed globally having sought help for mental health problems related to their PhD.

Furthermore, universities often place pressure on young career researchers to publish as many journal articles as possible, despite the fact that a large number of us don’t go on into academic careers. This can often leave PhD students with little time to develop skills outside of scientific writing.

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Fishing for Invaders

Image Credit: California Department of Fish and Wildlife, CC BY 2.0, Image Cropped

Angling as a source of non-native freshwater fish: a European review (2019) Carpio, De Miguel, Oteros, Hillstrom & Tortosa, Biological Invasions, doi.org/10.1007/s10530-019-02042-5

The Crux

People love fishing. It’s an intrinsic part of some people’s lives, whether as a livelihood or a past-time. People who have grown up fishing often have specific species that they enjoy fishing for. Nothing wrong with that.

Yet people’s desire to go after one fish species will often lead them to move that species around. This can happen on a small scale, with people moving a species from one lake to another slightly closer to their homes. Or it can happen on a massive one, with a species being transported to new continents.

This has shaped entire freshwater communities in modern-day Europe, where 195 species now reside that have no natural range in the continent. Most of these have been introduced since the nineteenth century, which is around the time that fishing became a popular recreational activity. This week’s authors wanted to find out what the role of recreational fishing was in shaping the make-up of today’s invasive freshwater fish populations in Europe.

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Ecofeminism: Struggles With Intersectionality

In this series we’re looking at the discipline of ecofeminism and the difficulties it has faced over the last half a century. You can read the introductory piece here, and part two on the difficulties it had defining itself here. Image Credit: C Watts, CC BY 2.0, Image Cropped.

The ecofeminism movement gained steam in the mid-1970s, at least in the Global North. Naturally, it borrowed a great deal from the environmental movements and versions of feminism that were most prevalent at the time. Here I’ll look at how those origins may have initially constrained the inclusiveness of the philosophy, and how it has moved on since.

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Fredrik Widemo: The Manifold Conflicts Behind the Hunting Industry

Image Credit: USFWS Endangered Species, CC BY 2.0, Image Cropped

Rewilding is a tricky business. Bringing back species that once roamed a country as their native land may seem like a worthy cause, but it is often fraught with conflict. People don’t want predators threatening their safety, or herbivores destroying their crops. Rural vs. urban tensions come into play. Local and federal politics get thrown into the mix.

With that in mind, I sat down with Associate Professor Fredrik Widemo, currently a Senior lecturer with the Swedish University of Agricultural Sciences. Fredrik has previously worked at both the Swedish Association for Hunting and Wildlife Management (where he was the Director of Science) and the Swedish Biodiversity Centre. We explored some of the complexities behind the rewilding of wolves and its effects on the hunting and forestry industries in Sweden.

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Are the Combined Effects of Human Development Worse Than the Sum of Their Parts?

Decreases in river discharge can negatively affect fish like this sucker, but what happens when they’re compounded by local changes in land use? (Image Credit: Hotash, CC BY 2.0, Image Cropped)

Anthropogenic land-use change intensifies the effect of lows flows on stream fishes (2019) Walker, Girard, Alford & Walters, Journal of Applied Ecology, https://doi.org/10.1111/1365-2664.13517

The Crux

Human activity can create a lot of different problems for the world’s ecosystems. These problems can impact an ecosystem simultaneously, often in different ways. For instance, a warming climate might push some species further towards the poles, but human structures like factories or mines might impede their dispersal. It’s relatively easy to study the effect of any one stressor that we place on a species, but looking at the interaction of multiple human-caused stressors is more difficult.

Take freshwater ecosystems. A warming climate means that there’s less snow and more rain in the winter, which reduces the river’s flow (or discharge) in summer. At the same time, nearby human construction can reduce nearby plant life, which in turn increases the amount of sediment washed into a river and lowers water quality. But do the two effects combined simply equal the sum of their parts, or does that combination make the total effect on local species even worse?

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Ecofeminism: The Difficulty of a Definition

Image Credit: Christoph Strässler, CC BY-SA 2.0

Over the next month or so I’ll be summarising a sociology paper that I wrote back in 2017 on ecofeminism. You can read the introductory piece here. This is part two. Image Credit: Christoph Strässler, CC BY-SA 2.0, Image Cropped.

One of the earliest difficulties that ecofeminism faced was that nobody seemed to understand exactly what is was. In the first piece of this series, I listed it as “a vaguely defined version of… a combination of ecology and feminism.” You can probably see this issue already – a combination of ecological and feminist thought sounds nice, but if it doesn’t have any clear message or meaning then is there really a point?

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