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.
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.
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 →
Science and humanities are often segregated in education and professional development. Even as a personal interest, the two disciplines are usually considered incompatible. In reality, they are complementary. Imagine if all science degrees included core humanities subjects in the first year? How would scientists, and science, benefit from a basic humanities perspective? This series looks for answers in some of the most common humanities disciplines.
Studying art is a bit more scientific than simply loitering at gallery openings. The discipline of Art History is the study of how visual art styles and movements have evolved over time. It teaches how to read and interpret art; but it also provides valuable insight into how humanity, society and their values have developed across the ages…insights that are very relevant to science. Here are a few ways that scientists could benefit from studying Art History:
In the modern age of Twitter, Instagram and camera-phones, we sometimes forget the natural history we can learn through art of the non-digital kind. Yes, Darwin’s sketches taught us a lot about ecology and biogeography. But he wasn’t the only artist to leave us with a stunning legacy of natural history resources. Continue reading →
There is no better way to appreciate ecological change across landscapes than by taking a road trip.
My partner and I just had one of the best holidays of our life: two weeks driving from our home in Albury in southern New South Wales, to the Sunshine Coast in south-east Queensland, where I grew up. We have done this trip a few times, but have always used the drive (about 1500 kilometres, one way) as a means to an end, i.e. getting to the coast to see friends and family. This trip, we took our time, sacrificing a few extra days at the beach for more time to explore en route. And it definitely paid off!
Australia is one of the lucky few countries that include most of the major terrestrial biome types. An interstate road trip is one of the best ways to see them! Ecologically, our trip was well-timed; the end of August signals the start of spring and wildflower explosions all over the country. The wattles were already in full swing around Albury, lifting our damp, grey spirits from a very long winter. Continue reading →
Rolling plains of wheat, endless fields of flowering canola, row upon row of fruit trees: these agricultural landscapes are the stuff of stunning photographs.
Filling these paddocks with just one crop, known as monoculture, is a relatively easy, common and efficient way to produce food and fibre.
But international research shows that these monocultures can be bad for the environment and production through effects on soil quality, erosion, plants and animals, and ultimately declining crop yields. Research I have published this week in the International Journal of Agricultural Sustainability shows a possible link between monoculture landscapes and fewer wild pollinators.