Tag Archives: conservation
The Cost Of Small-Scale Hunting On A Big-Scale Bird
Achieving international biodiversity targets: learning from local norms, values and actions regarding migratory waterfowl management in Kazakhstan (2022) Jones et al., Journal of Applied Ecology, https://doi.org/10.1111/1365-2664.14198
Some species that we consider local treasures have ranges that extend over vaste swathes of the planet, and some of these make use of those entire ranges. This is probably most obvious in bird species. Some of the locals that have been popping up in my neighbourhood as spring kicks off have been spending the winter on the other half of the planet, and have made use of countless other locations on their journeys between the two endpoints.
This makes conservation a headache. Just because a species is beloved and protected at one end of its range doesn’t mean it’s afforded the same luxury at another end. Even if the species is internationally recognised as threatened, that doesn’t mean every location it visits will respect – or even be aware – of this status. That means that to protect migratory species, we need to figure out the most important parts of their ranges, and work with the people who live there to ensure the birds persist. Today’s paper is an investigation into how effective this sort of work could prove in the future.Read more
The Guilt of One Shark: The History of the “Rogue Shark” Theory
Image Credit: Sharkcrew, CC BY-SA 4.0, Image Cropped
In February 2022, a British swimmer was killed by a great white shark (Carcharadon carcharias) near Sydney, Australia. Unsurprisingly, this gained significant media attention. State authorities launched a search for the culprit, with the aim of culling/relocating it away from people. This plan would seem, on the surface, to make perfect sense – shark ate human, make it go away. Yet this logic is largely based on a widespread misconception, and an outdated theory that science has long since abandoned.Read more
Searching For Standouts In The IPCC Reports
Image Credit: bertknot, CC BY-SA 2.0, Image Cropped
Let’s face it, IPCC reports are never a fun read. They’re a damming assessment of our ability to take care of the only planet we’ve got. Piecing through them to find the key takeaways is likewise a tough task, but since the final report (for this round) has now been submitted, I thought I’d reflect on what I’ve learned going through each step of the report over the last year.Read more
We’re In The Sixth Mass Extinction Event
Image Credit: Bernard Dupont, CC BY-SA 2.0, Image Cropped
The urgency behind the most recent IPCC report has thankfully garnered it a lot of attention worldwide*. It’s a report that was very frank in its desperation for people to take this threat as seriously as possible. Yet both this report and the one that hit us in February also made mention of one other key factor that has been swept under the rug – the ability of functioning ecosystems to both mediate and mitigate the impact of climate change.
Alongside a wealth of other benefits we gain from biodiversity, ecosystems play vital roles in helping us withstand the rigours of climate change. Wetlands and rivers protect us from increased flooding. Forests help mitigate extreme heat waves. Peatlands, mires, and permafrost are all crucial carbon sinks. Yet as species disappear, these ecosystems deteriorate, as pieces of the complicated web that they’re made up of disappear. It’s why the concept of mass extinction is so frightening.
But what is mass extinction? We often hear about the concept of a mass extinction, and the question of whether we’re currently in the sixth mass extinction is constantly thrown around. So let’s have a quick look at exactly what extinction itself means, what a mass extinction is, and why it’s increasingly obvious that we’re in one.Read more
What The Hell Is A Species Anyway?
The Sumatran tiger, which is different from other subspecies of tiger for reasons (Image Credit: Bernard Spragg, CC0 1.0)
We’re only 3 months in, but 2022 has been a hell of a year for species-related controversy. Grolar and pizzly bears have come roaring into public consciousness, researchers proclaimed that the T-Rex we know and love is actually three different species, and soon-to-be minted Doctor Yi-Kai Tea has been sinking and raising some truly glorious fish species like nobody’s business (we call this taxonomic ha-wrasse-ment).
With the classification calamities flying thick and fast, it’s easy to wonder exactly what it is about naming a species that is so damn hard. So let’s have a quick runthrough of what a species is, why taxonomy is so damn complicated, and why it even matters.Read more
Through The Lens Of A Biologist: A Wildlife Photographer Shares His Story
Over the last two years, I had the chance to spend over 100 days at sea on board the German research vessel Sonne, transversing the Atlantic and examining all sorts of fascinating deep-sea animals. On these trips, the scientists were joined by someone whose goal it is to bring the science to the people: Solvin Zankl, who has been a professional wildlife photographer for over 20 years.
When the deep-sea nets reach the surface, the biologists start stressing, frantically ensuring the catch is properly documented and preserved. This is when Solvin’s smorgasbord starts, as he calmly looks through the catch and picks out the more interesting specimens, some of which he knows and some of which he has never seen before. Then he slowly maneuvers his small canisters of cold water into the cold room to spend the next hours meticulously portraying each animal.
Since I believe his job is an absolute dream job for many biologists, I asked him a few questions on how he got into this profession and what some of the challenges are.Read more
How Invasives Get In Your Head (And Your Poop)
Image Credit: Hedera Baltica, CC BY-SA 2.0, Image Cropped
Invasive alien species as an environmental stressor and its effects on coping style in a native competitor, the Eurasian red squirrel (2022) Santicchia et al., Hormons and Behaviour, https://doi.org/10.1016/j.yhbeh.2022.105127
We know that human activities can cause enormous stress for local species, and the introduction of invasive species is one of the most harmful stressors on a global basis. We know that new, harmful species can cause local extinctions, but how does their introduction affect the locals on a behavioural level?
Grey squirrels were introduced to Europe last century and have been spreading since, displacing the native red squirrels and wiping them out in many areas. This week’s authors wanted to know exactly how red squirrels’ behaviour changed when the grey squirrels were introduced, by looking in detail at the behaviour of red squirrles in both invaded and non-invaded areas, and seeing if they could see evidence of these changes in the expression of hormones (more on this in Did You Know).Read more