Today we associate lions with Africa, but they used to be widespread around the northern hemisphere (Image Credit: MLbay, Pixabay licence, Image Cropped)
While I continuously hear my little one’s nursery rhyme about a certain stuff going round and round, I think, what else moves round and round in my field? Species!
They move around as they are looking for a mate, food, to avoid cold weather, the list goes on. They occupy a reasonable range that can be handled by their bodily functions, and either stay in that range or move when the environment changes. A species’ historical movement is one of the most important aspects of its natural history.
Deciding which species to conserve is hard enough, but deciding how many of a species is a viable goal is an entirely different matter (Image Credit: Frank Wouters, CC BY 2.0, Image Cropped)
When talking about species conservation, my concern is always around how many individuals should there be in a population of species. What should be our numeric goal in re-establishing a species? Should the endangered anoa become as many as their domestic relative, the water buffalo, of which there are at least 3 million individuals in Indonesia? How about the songbirds? Should each species be as abundant as the chicken?
Tasmanian Devil at the Zoo Duisburg, in 2017. The only zoo in Germany that keeps them. (Credit: Mathias Appel / CC0)
With the seemingly endless stream of bad news relating to the environment we’re often faced with these days, hearing ecosystem restoration or conservation success stories are always a welcome relief. With the number of species that have been displaced from their native habitats, the news of an endangered species being successfully introduced to a new area should be shouted out. So you cannot blame a conservation geneticist like me for jumping happily when I heard news of the release of the European bison and Tasmanian devil back to their native habitat.
Image Credit: Mike Baird, CC BY 2.0; Chuck Szmurlo, CC BY 3.0; Ryan Hagerty, USFWS, Public Domain)
Nowadays we know to avoid mating with close relatives so that your children are healthy. As close relatives accumulate similar genetic diversity, mating between relatives of most species can lead to genetic diseases in their offspring. Humans have a lot of options; there are 7 billion of us worldwide. But how about an endangered species with less than 10 individuals in the wild?
Forest Tundra on the Taymyr Peninsula between Dudinka and Norilsk near Kayerkan, Russia, taken in 2016. Was it always look like this? Should it look like this?
Image Credit: Ninaras, CC BY 4.0, Image Cropped
Although obtaining ancient DNA can be quite a headache, it is a very rewarding headache. After all the work that goes into obtaining DNA from a bone, fur, hair, or Viking’s leftover meal, researchers have to make sense of the apparent random sequence of nucleotide bases. But once that’s taken care of, there are a series of really interesting questions we can start to answer. Were DNA strands that are present in the modern times inherited from the past? How similar are today’s species to their forebears? Where is my pet velociraptor?
Image Credit: Carol M. Highsmith, CC BY 2.0, Image Cropped
The ultimate goal of species conservation is to preserve a species’ existence in the natural world. To effectively do this, we must know the extent of “species” that we want to conserve. That may sound simple, but the concept of hybridisation can blur the lines of where one species begins and another ends beyond recognition.
Whilst cichlid fish might look incredibly diverse, they are actually all relatively genetically similar. So how do we define genetic diversity, and how do we conserve it? (Image Credit: Emir Kaan Okutan, Pexels Licence, Image Cropped)
Biodiversity has become an immensely popular buzzword over the last few decades. Yet the concept of genetic diversity has been less present in everyday ecological conversations. So today I want to go through why genetic diversity is important, how we define it, and why there is often controversy about its application in conservation science. Read more