As the end of 2019 approached, I had planned to write one of my usual New Year posts here, something about my top posts and the best papers I read last year.
But as January approached, the escalating crisis we are currently experiencing made all of that seem frivolous and pointless.
I’m an optimist and I don’t like to dwell on despair. But this climate crisis ravaging our beautiful country is too critical to ignore. This post is more personal than usual – I’ll write something about insects and ecosystem services when I have time to get my thoughts together. Continue reading
Saunders ME, Rader R (2019) Network modularity influences plant reproduction in a mosaic tropical agroecosystem. Proc. R. Soc. B 286: 20190296. (all data and code available on github)
I’m so excited about our new paper! We use network analysis in a cool new way to understand how pollinator community structure influences ecosystem function in a heterogeneous landscape. Understanding links between structure and function is a core goal of ecological research, but there are still plenty of things we don’t know about these relationships. Continue reading
The argument that half our planet should be set aside for Nature has been in the news lately. A few years’ ago, E.O. Wilson wrote Half-Earth, his plan to save the biosphere by dedicating half the planet’s surface to nature. Other scientists have published supporting arguments, for example here and here.
The idea is commendable and inspiring. Modern human civilisation is having huge, sometimes irreversible, effects on natural processes and ecosystem function. In return, the outcomes of these effects are having terrible impacts on human wellbeing, e.g. climate change, loss of natural vegetation, plastic and agrichemical pollution etc.
To sustain life, we (all of us) really need to change the way we use our local and global environments.
So is the ‘half earth’ proposal realistic and effective for achieving this goal? Continue reading
Sustainable agriculture is an ambiguous term. Because ‘sustainable’ simply means ‘maintained at the current level’, sustainable agriculture can be whatever you want it to be. It’s used more than it probably should be in scientific and political documents, because it’s a broad encompassing term that most people have heard. But it needs to be interpreted within the context it’s referring to, not on its own. Sometimes that context isn’t clear.
Modern agriculture is a leading driver of our current environmental problems, already pushing us beyond the safe limits of most planetary boundaries. But not all agriculture is equal. Very few studies, or their associated news stories, clarify the subtle social and ecological differences between individual farms and landscapes.
Ecological Armageddon is a bit dramatic. But the message from this paper published in PLOS One is important. The study shows an 82% decline in mid-summer flying insect biomass since 1989 over multiple sites in Germany. Mid-summer is usually peak insect activity, so this is weird.
But every ecological study has a context. This context is described in the Methods section – the most important but least-read section of a scientific paper. For this study, most of the media stories glossed over or overextended the context. Continue reading
My latest paper is out. It’s a leftover from my last postdoc at Charles Sturt Uni where I was working on ecosystem services in SE Australian apple orchards with Gary Luck and PhD student Rebecca Peisley – see her blog posts on her work here.
Our main research question for the project was to calculate the net outcome, in terms of yield, of all the positive and negative effects of animal interactions across a growing season. You can read our previous paper on those results here.
In this new paper we looked at another interaction, the influence of landscape vegetation and orchard ground cover on different invertebrate groups. I really enjoyed this project as it was an opportunity to explore an idea I had been thinking about for a while. I first got interested in orchard ground cover during my PhD, comparing wild pollinators in almond orchards with and without living ground cover. Continue reading
Agreed, bees and other insect pollinators are under threat globally from multiple human pressures. If pollinators disappear completely from an ecosystem, their loss will affect the structure of those ecosystems and the natural foods and fibres we use from the ecosystem. So, finding solutions to the problem of pollinator decline are imperative.
This is why the robo bees story sounds like such a seductive idea. Imagine creating tiny drones with hairs on them that can be programmed to do a bee’s job? Wow! We are off the hook. Continue reading