Bee informed: Quick pollination facts about our most important pollinators

27 11 2015

if we die

If bees were to disappear, humans will disappear within a few years.

Albert Einstein

I find it interesting that so much is said about bees (including here on this blog), yet many of the ‘facts’ that one hears mentioned in any variety of news sources, public presentations and even scientific articles aren’t very well sourced and at times highly suspect.

For your fact-finding benefit then, I present to you some of the established facts about bees: Read the rest of this entry »

When science is ignored: Mauritius starts culling 18,000 threatened fruit bats

8 11 2015

JS7D2844aRrHere’s a depressing emergency post by Fabiola Monty.

I started working on this article to discuss how useful science is being ignored in Mauritius.

The Mauritian government has decided to implement a fruit bat cull as an ‘urgent response’ to the claims of huge economic losses by fruit farmers, a decision not supported by scientific evidence. We have now received confirmation in Mauritius through a local press communiqué that on 7 November 2015, The Mauritian Ministry of Agro Industry and Food Security in collaboration with the local Police Department and Special Mobile Force will start the culling of 18,000 bats in their natural habitats “with a view to reducing the extent of damages caused to fruits by bats”.

Tackling human-wildlife conflicts can indeed be challenging, but can the culling of 18,000 endemic Mauritian flying fox (Pteropus niger) resolve ‘human-wildlife conflict’ in the land of the dodo? In the case of Mauritius, scientific evidence not only demonstrates that the situation has been exaggerated, but that there are alternatives to bat culling that have been completely brushed aside by policy makers.

JS7D3726aRrAre the Mauritius fruit bats agricultural pests?

While fruit bats are being labelled as serious pests, scientific evidence shows instead that their impacts have been exaggerated. A recent (2014) study indicates that bats damage only 3-11% of fruit production, with birds also contributing to 1-8% of fruit loss. Rats are also probable contributors to fruit damage, but the extent remains unquantified. Interestingly, more fruits are lost (13-20%) because they are not collected in time and are left to over-ripen.

While the results of the study were communicated to legislators a few months before they made the decision to cull, it is clear that these were ignored in favour of preconceived assumptions.

Are there too many fruit bats? Read the rest of this entry »

Game bird madness

4 11 2015

Gamecart_largeI just returned to Paris after a brief visit to the University of Aberdeen over the weekend. My hosts, Xavier Lambin and Beth Scott, were not only marvellously welcoming, I also learned a lot about the travesty that is game bird management in the United Kingdom, and especially in Scotland.

As you might already know, the Great Britons are a little cuckoo for birds — I’d even wager that the country produces more twitchers than any other country on Earth. The plus side is that there are few national taxa better censused and studied that British birds, because so many non-scientists get into the spirit of data collection. Hell, I’ve even had a play with some of their datasets.

The other side of this bird madness is not so good — I’m talking about the massive biomass of game birds reared, released and shot every year in the United Kingdom. It’s not the hunting per se with which I take issue, it’s the insane manipulation of an entire ecosystem for the benefit of a few species. Read the rest of this entry »

Killing the Koala and Poisoning the Prairie

19 10 2015


Man and the environment are meant for each other” — Tony Abbott, former Prime Minister of Australia (2014)

I know the human being and the fish can co-exist peacefully” — George W. Bush, former President of the USA (2000)

It. Has. Finally. Been. Published.

Yes, my new book with Paul Ehrlich, published by University of Chicago Press, is now available to purchase in book shops and online distributors around the world. The blog post today is a little explanatory synopsis of why we wrote the book and what it contains, but of course the real ‘meat’ is in the book. I hope you enjoy it.

In Australia, you can purchase the hard copy through Footprint Books, and the Kindle version at Amazon Australia. I also suggest that Australians might find the best deals through Booko. Electronic versions are also available through Kobo and Google Play. In the US you can order directly from University of Chicago Press, Amazon, Barnes & Noble, and many other book sellers. In the UK and Europe, the book is available from your country’s Amazon distributor. I imagine many chain and independent book sellers will be carrying the book by now, or will be soon.

My deepest thanks to all those who made it possible.

Our chance meeting in 2009 at Stanford University turned out to be auspicious, not least of which because of the publication this week of our co-authored book, Killing the Koala and Poisoning the Prairie. Australia, America and the Environment by University of Chicago Press. As a mid-career ecologist (Bradshaw) based at the University of Adelaide, it was indeed an honour to meet one of the most famous scientists (Ehrlich) in my field. With a list of books and hundreds of scientific papers under his belt, Ehrlich has been tackling major environmental issues since the 1960s. Ehrlich also has a long-time interest in Australia, having visited nearly every year during the last four decades and experienced more of the country than most Australians. Together we have observed firsthand the similarities and differences of Australia and the US, and the eyes we see through are trained as those of environmental scientists and evolutionary biologists.

So why write a book about the environmental tragedies currently unfolding in two completely different countries at opposite ends of the Earth? As it turns out, Australia and the US have much more in common environmentally than one might think, and not necessarily in a good way. Despite our vastly different floras and faunas, population densities, histories of human colonisation and soil productivities, there is an almost spooky similarity in the environmental and political problems both our countries are now experiencing. As such, we have a lot to learn about avoiding each other’s mistakes.


Australia and the contiguous US are roughly equivalent in land area, both cultures are derived originally and principally from what is now the United Kingdom, and both are examples of super-consuming, super-wasting, wealthy, literate countries. Both countries also have environmental footprints that exceed most other countries on Earth, with some of the world’s highest per capita rates of greenhouse-gas emissions, water consumption, species extinctions and deforestation.  Read the rest of this entry »

Only thing worse than being labelled ‘deadly’, is not being called anything at all

13 10 2015

11034-Snake-BiteI had an interesting exchange on Twitter today that deserves some discussion, not because the brief internet argument that ensued offers some insightful wisdom (internet debates rarely do anything more than identify all those involved as fuckwits), but because it raises an interesting issue in conservation.

The abbreviated (and slightly expurgated) main message of the exchange was whether drawing attention to the potential for a species to cause harm to humans is good or bad (for the species in question).

The elasmobranchologists in particular usually become apoplectic whenever anyone calls a shark ‘deadly’, or some such similar adjective. As it turns out, the ophidiologists appear to be equally sensitive. I admit that they do have a point — it’s probably fair to assume that films like Jaws and Anaconda (or, Darwin-forbid, Sharknado) haven’t done much to make most people appreciate the amazing diversity, evolutionary adaptations and wonderful life histories of these subclasses & clades (respectively).

In fact, most marine biologists assume that Jaws in particular was responsible for decades of overt prosecution of sharks that has led to the massive population declines. However, I sincerely wonder whether the bad media was in the real culprit and over-fishing was instead the principal cause of today’s observed shark declines (the questionable nature of the numbers often cited notwithstanding).  Read the rest of this entry »

To spare or to share, that is a muddled question

9 10 2015
Unfortunately, it ain't this simple (from doi:10.1016/j.foodpol.2010.11.008)

Unfortunately, it ain’t this simple (from doi:10.1016/j.foodpol.2010.11.008)

Certain research trends in any field are inevitable, because once a seductive can of research-question worms is opened, it’s difficult to resist the temptation to start hooking in. Of course, I’m not against popular trends in research per se if they lead to a productive, empirical evaluation of the complexities involved, but it can sometimes result in a lot of wasted time. For example, in conservation ecology we’ve had to suffer 15 years of wasted effort on disproving neutral theory, we’ve bashed heads unnecessarily regarding the infamous SLOSS (‘Single Large Or Several Small’ reserves) debates of the 1970s and 1980s, and we’ve pilfered precious years arguing about whether density feedback actually exists (answer: it does).

The latest populist research trend in conservation seems to be the ‘land sparing versus land sharing’ debate, which, I (and others) argue, is largely an overly simplistic waste of time, money and intellectual advancement to the detriment of both biodiversity and human well-being.

Land sparing is generally used in reference to agricultural practices (although in theory, it could apply to any human endeavour where native vegetation cover is required to be removed or degraded, such as for electricity production) that are purposely made to be high-yielding so that they require the smallest amount of land. At the other extreme (and the ‘two extremes’ of a continuum concept is half the bloody problem here), land sharing requires a larger land footprint because it relies on lower-yielding, biodiversity-friendly (agricultural) practices. Proponents of land sparing argue that only by amalgamating patches of remnant native vegetation can we avoid massive fragmentation and the pursuant loss of biodiversity, whereas those pushing for land sparing argue that the matrix between the big undeveloped bits must be exploited in a more biodiversity-friendly way to allow species to persist.

As it turns out, they’re both right (but their single-minded, extremist positions are not). Read the rest of this entry »

Essential papers you’ve probably never read

14 09 2015

Hmmm. What to read next?

“What would you consider to be the most important papers to read in your discipline?”.

That was the question a colleague with whom I’m working closely at the moment (you can probably figure out who that is) asked me last year. “Jesus H. Bloody Christ”, I thought, “What a question!”. How long is a piece of string?

In some ways, there is no way to answer that question well. Every research project requires reading a specific set of papers, and very few traverse the divide between projects. I seem to have to read a new set of papers every time I write one myself, although I admit I tend to stray from a single ‘discipline’ far too often than is probably considered healthy. Let’s also not forget those essential methods papers; you know, the ones that actually show you how to do the thing you’re trying to do? You can’t get much more essential than those.

But if I really sit down and think about it (and I have), it sort of comes down to what I’d expect my postgraduate students to know by the time they finish their degrees. In other words, they should read and retain the information in the papers that transcend research projects and all sub-disciplines of conservation ecology.

So I’ve picked a dozen of my ‘favourite’ papers that I think have something really important to tell us. They tend to be a little generic in terms of the broadness of their implications, but they are also, in my view, brilliant demonstrations of fundamental processes that all conservation ecologists should know.

While many of them are in the ‘big’ journals, not all of them are, nor are they necessarily the most cited papers in this field. I’ve also tended to avoid papers that document the things we know pretty well by now (e.g., effects of fragmentation, extinction patterns, etc.), and I haven’t really included any ‘methods’ papers for the simple reason I explained above that there are so many and they are very project-specific. I’ve even been a little cheeky and included one of my own, so take that for what it’s worth.

I present the list below in broad categories, and I include a little blurb about why I chose each one. There are, of course, 100s if not 1000s of others out there that others would choose, and I suppose that an inventory of such papers across many ecologists would be a good idea to put together. If you know this blog at all, you’ll know that I’ve also published my list of conservation ‘classics’, so I’m not going to repeat those here. Neither am I presenting those older papers that we should all have read, yet despite citing them for decades, few of us have (which has all sorts of implications for bullshit perpetuating over time, but that’s a topic for another blog post). For now, this is my tuppence. Read the rest of this entry »


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