Image Credit: pxhere, CC0 1.0, Image Cropped
When I’ve talked about anthropogenic effects, I’ve been guilty of focussing far too much on climate change and land use. But our dependence on toxicants like pesticides also has a profound impact on ecosystems, freshwater ecosystems in particular. On her recent visit to NTN in Trondheim, I spoke to ecotoxicologist Dr. Marie-Agnes Coutellec about her research group’s work with pesticides, and the likely future for much of Europe’s aquatic life.
Image Credits: Ian Winfield, Cory Goldsworthy, Matt von Konrat, CC BY-SA 2.0
Two weeks ago, I published Part One of our look into how ecology has changed over recent decades. My colleague Kate Layton-Matthews and I have put this question to a number of ecological researchers from all over the world. Here are some more responses on how our field has evolved, from the publishing of papers to land clearance to the job market.
Dams like this change the flow regimes of rivers, and prevent some species from accessing their spawning grounds, lowering population viability. But is removing them completely danger-free? (Image Credit: Notorious4Life, CC0 1.0, Image Cropped)
Anybody who has ever studied freshwater ecosystems will end up having to study dams at some point. And they’ll no doubt learn that dams are the enemy. They fragment ecosystems. They cut fish off from their spawning grounds. They change flow regimes. So it makes sense that the recent trend of dam removal across Europe and the world in general would please ecologists. But there’s a problem with dam removal, and it comes in the form of invasive species.