The 2020 Oikos Write-Up: Ecology in the Anthropocene

The Cataract Gorge in Launceston, Tasmania, where the 2019 Ecological Society of Australia Annual Meeting was held (Image Credit: Marina Schmoeller, CC BY 2.0)
The conference was held in Launceston, the second largest city in Tasmania. With about ninety thousand inhabitants, a rich history with deep roots in its eye-catching landscapes, the Tamar River Valley and the Cataract Gorge, Launceston is a charming place with a lot to offer all visitors. But let’s talk about the conference.
Image Credit: Vinícius Mendonça/Ibama, Image Cropped, CC BY-SA 2.0
The Bonnet Macacque, one of the 89 species in which females have been shown to commit infanticide (Image Credit: Vino Rex, CC BY 2.0, Image Cropped)
The evolution of infanticide by females in mammals (2019) Lukas & Huchard, Philsophical Transactions of the Royal Society – Biological Sciences, https://doi.org/10.1098/rstb.2018.0075
The practice of male mammals killing their rival’s cubs has been well-documented by wildlife biologists. The image of a male lion striding away from a pride with a dead cub in his mouth is quite haunting (spare a though for Scar’s kids when Simba takes over again). But infanticide by female mammals has received less attention.
Whilst males generally only kill young to ensure they have more access to mates, the motivations behind infanticide in females are more complex. It ultimately comes down to resource competition, but the resources themselves are myriad – milk, availability of space, care from more than one ‘parental’ figure (allocare), and social status. These four resources make up the competing hypotheses as to why females commit infanticide. This week’s researchers wanted to know what factors of a species biology increased the likelihood of a mother to kill an infant of the same species.
Image Credit: Emilian Robert Vicol, CC BY 2.0, Image Cropped
Now, plastics are certainly an irrefutable problem. We obviously have an unhealthy dependency on plastics that are found in our clothing, food, soaps, and homes. However, there is a question among conservationists and scientists over whether or not it is a good thing that the public conscious seems to become obsessed with a single issue, while others outside the limelight seem to fall away (similar to how in the USA people seem to have forgotten that Flint is STILL without clean water). I want to discuss how the new media landscape propels environmental fads, the good they can do, and the possible problems.
Image Credit: Liliann Eidem, CC BY-SA 2.0, Image Cropped
Prue Addison, who spoke at the recent Norwegian Ecological Society Conference, is attempting to bring conservation science to ‘the dark side’ – the world of business (Image Credit: Synchronicity Earth, CC BY 2.0, Image Cropped)
CSIRO scientist Éva Plagányi, who has worked with researchers from social and economic backgrounds to better understand human impacts on ecology (Image Credit: CSIRO, CC BY-SA 2.0, Image Cropped)
This is where social sciences like anthropology can help. At the ASFB 2018 Conference, I spoke to plenary speaker CSIRO’s Dr. Éva Plagányi, who works on maintaining the sustainability of marine life. Éva’s work includes interaction with everyone from corporate businessmen to traditional fishers, and integrating social anthropology into her work has yielded great results. I spoke to Éva on the importance of incorporating social science into ecology.
Image Credit: Mallee Catchment Management Authority, CC BY 2.0, Image Cropped
At the Australian Society of Fish Biology’s Annual Conference last week, Jarod Lyon, who manages the Applied Aquatic Ecology Section at Australia’s Arthur Rylah Institute, gave a talk about applied science in the ‘fake news’ era. I took the opportunity to sit down and quiz Jarod as to how we need to approach public communication in the era of social media.
EDIT: This paper is one of many papers by Jonathan Pruitt which is currently under investigation for suspected data manipulation. More on that at the link below.
Leadership can play an important role of a population dynamics, but is it the strength of the leaders or the willingness of the followers that has more influence? (Image Credit: Bernard Dupont, CC BY-SA 2.0)
Selection for Collective Aggressiveness Favors Social Susceptibility in Social Spiders (2018) Pruitt et al., Current Biology, doi: 10.1016/j.cub.2017.11.038.
Socially-influential leaders can have a large effect on the actions of any group. Think of that one person in your life that everyone looks to when it’s time to make a decision; whether it’s something trivial like where to go for dinner, or something more important like whether or not to take that job on the other side of the country, these individuals make a large impact in their social circles. This can also be seen in the natural world, like the alpha of a wolf pack, or the matriarchs of an elephant troop or an orca pod. These focal individuals greatly influence the actions and success of their groups.
In order to determine not only how important these influential individuals are, but also how much the “social susceptibility” of the followers matters, the researchers in this paper used a species of social spider in two different habitat types. By using both arid and wet environments and analyzing both sides of the influence coin, this study was able to accurately determine the importance of both influencing and being influenced in different ecosystems.