Singin’ in the heat

9 03 2017
coqui & forest

Common coqui frog male (Eleutherodactylus coqui, snout-to vent length average ~ 3 cm) camouflaged in the fronds of an epiphyte in the El Yunque National Forest (Puerto Rico), along with an image of the enchanted forest of the Sierra de Luquillo where Narins & Meenderink did their study (4) – photos courtesy of Thomas Fletcher. This species can be found from sea level to the top of the highest peak in Puerto Rico (Cerro Punta = 1338 m). Native to mesic ecosystems, common coquis are well adapted to a terrestrial life, e.g., they lack interdigital webbing that support swimming propulsion in many amphibians, and youngsters hatch directly from the egg without transiting a tadpole stage. The IUCN catalogues the species as ‘Least Concern’ though alerts recent declines in high-altitude populations caused by chytrid fungus – lethal to amphibians at a planetary scale (9). Remarkably, the species has been introduced to Florida, Hawaii, the Dominican Republic and the Virgin Islands where it can become a pest due to high fertility rates (several >20 egg clutches/female/year).

Frog songs are species-specific and highly useful for the study of tropical communities, which host the highest amphibian diversities globally. The auditory system of females and the vocal system of males have co-evolved to facilitate reproductive encounters, but global warming might be disrupting the frequency of sound-based encounters in some species..

It is a rainy night, and Don (Gene Kelly) has just left his love, Kathy (Debbie Reynolds), at home, starting one of the most famous musical movie scenes ever: Singin’ in the rain 

Amphibians (see Amphibians for kids by National Geographic) also love to sing in rainy nights when males call for a partner, but now they have to do it in hotter conditions as local climates become warmer. Vocal behaviour is a critical trait in the life history of many frog species because it mediates recognition between individuals, including sexual selection by females (1).

With few exceptions, every species has a different and unique call, so scientists can use call features to identify species, and this trait is particularly useful in the inventory of diverse tropical communities (2). Differences in call frequency, duration and pitch, and in note, number, and repetition pattern, occur from one species to another. And even within species, songs can vary from individual to individual (as much as there are not two people with the same voice), and be tuned according to body size and environmental temperature (3). Read the rest of this entry »

Job: Koala Data Research Technician

6 03 2017

koalaIf you live in South Australia, and in Adelaide especially, you would have had to be living under a rock not to have heard of the Great Koala Counts 1 and 2. So I’m not really writing this for those sotto pietra types. If you are a regular reader of, you’ll also know that I’ve been involved in helping analyse the data from GKC1, as well as improving the design of the GKC2.

8037320-3x2-940x627Well, the data are in for GKC2 and we need help to analyse them. Just as a little reminder, the GKCs are designed to provide better data to estimate the distribution and density of koalas in South Australia (especially in the Mount Lofty Ranges). We’ve already written one scientific article from GKC1, but we now have a more expansive and quality-controlled dataset, so it’s now time to write the second. Read the rest of this entry »

Job: Research Associate in Eco-epidemiological modelling

3 03 2017

European rabbit infected with myxomatosis

Earlier this week I advertised two new PhD scholarships in palaeo-ecological modelling. Now we are pleased to advertise a six-month Research Associate position in eco-epidemiological modelling.

The position will be based in the School of Biological Sciences at Flinders University. Flinders University offers a dynamic research environment that explores the continuum of environmental and evolutionary research from the ancient to modern ecology. The School of Biological Sciences is an integrated community researching and teaching biology, and has a long history of science innovation.

Project background

Since 1996, Biosecurity South Australia has been running a capture-mark-recapture study on a European rabbit (Oryctolagus cuniculus) population located at Turretfield (~ 50 km north of Adelaide). Now into the 21st year, this is one of the world’s longest studies of its kind. Approximately every 8 weeks cage traps are reset and the population trapped over five days, with the captured rabbits weighed, sexed, tagged and blood-sampled. The study was established to investigate the epidemiology and efficacy of the two imported rabbit biocontrol agents, rabbit haemorrhagic disease virus (RHDV) and myxomatosis. To date, from 119 formal trapping events and RHDV-outbreak carcass-sampling trips, > 4500 rabbits have been monitored with > 8700 cELISA RHDV antibody tests and 7500 IgG, IgM and IgA RHDV antibody tests on sera (similarly for myxomatosis), and 111 RHDV-specific polymerase chain reaction (PCR) analyses run on tissue samples of the sampled rabbits. This represents an unparalleled dataset on rabbit survival, population fluctuations and disease dynamics. Read the rest of this entry »

Palaeo-ecology PhD scholarships

1 03 2017

scholarshipWith my new position as Matthew Flinders Fellow in Global Ecology at Flinders University, I am in the agreeable position to be able to offer two PhD scholarships to the best candidates from around the world. If you feel that you’re up to the challenge, I look forward to hearing from you.

These projects will be in the following palaeo-ecology topics:

PhD Project #1. Ecological networks to examine community cascades of Late Quaternary megafauna extinctions Read the rest of this entry »

Multiculturalism in the lab

23 02 2017

8294047fabf352ce46f4fd9a89d4a93dWith all the nasty nationalism and xenophobia gurgling nauseatingly to the surface of our political discoursethese days, it is probably worth some reflection regarding the role of multiculturalism in science. I’m therefore going to take a stab, despite being in most respects a ‘golden child’ in terms of privilege and opportunity (I am, after all, a middle-aged Caucasian male living in a wealthy country). My cards are on the table.

I know few overtly racist scientists, although I suspect that they do exist. In fact, most scientists are of a more liberal persuasion generally and tend to pride themselves on their objectivity in all aspects of being human, including the sociological ones. In other words, we tend to think of ourselves as dispassionate pluralists who only judge the empirical capabilities of our colleagues, with their races, genders, sexual persuasions and other physical attributes irrelevant to our assessment. We generally love to travel and interact with our peers from all nations and walks of life, and we regularly decorate our offices and with cultural paraphernalia different to our own.

But are we as unbiased and dispassionate as we think we are? Do we take that professed pluralism and cultural promiscuity with us to the lab each day? Perhaps we could, and should, do better. Read the rest of this entry »

Not all wetlands are created equal

13 02 2017

little-guyLast year I wrote what has become a highly viewed post here at about the plight of the world’s freshwater biodiversity. In a word, it’s ‘buggered’.

But there are steps we can take to avoid losing even more of that precious freshwater biodiversity. The first, of course, is to stop sucking all the water out of our streams and wetlands. With a global population of 7.5 billion people and climbing, the competition for freshwater will usually mean that non-human life forms lose that race. However, the more people (and those making the decisions, in particular) realise that intact wetlands do us more good as wetlands rather than carparks, housing developments, or farmland (via freshwater filtering, species protection, carbon storage, etc.), the more we have a chance to save them.

My former MSc student, the very clever David Deane1, has been working tirelessly to examine different scenarios of wetland plant biodiversity change in South Australia, and is now the proud lead author of a corker of a new paper in Biological Conservation. Having already published one paper about how wetland plant biodiversity patterns are driven by rare terrestrial plants, his latest is a very important contribution about how to manage our precious wetlands. Read the rest of this entry »

Dealing with rejection

8 02 2017

6360351663382153201743264721_ls_crying-menWe scientists can unfortunately be real bastards to each other, and no other interaction brings out that tendency more than peer review. Of course no one, no matter how experienced, likes to have a manuscript rejected. People hate to be on the receiving end of any criticism, and scientists are certainly no different. Many reviews can be harsh and unfair; many reviewers ‘miss the point’ or are just plain nasty.

It is inevitable that you will be rejected outright many times after the first attempt. Sometimes you can counter this negative decision via an appeal, but more often than not the rejection is final no matter what you could argue or modify. So your only recourse is move on to a lower-ranked journal. If you consistently submit to low-ranked journals, you would obviously receive far fewer rejections during the course of your scientific career, but you would also probably minimise the number of citations arising from your work as a consequence.

So your manuscript has been REJECTED. What now? The first thing to remember is that you and your colleagues have not been rejected, only your manuscript has. This might seem obvious as you read these words, but nearly everyone — save the chronically narcissistic — goes through some feelings of self-doubt and inadequacy following a rejection letter. At this point it is essential to remind yourself that your capacity to do science is not being judged here; rather, the most likely explanation is that given your strategy to maximise your paper’s citation potential, you have probably just overshot the target journal. What this really means is that the editor (and/or reviewers) are of the opinion that your paper is not likely to gain as many citations as they think papers in their journal should. Look closely at the rejection letter — does it say anything about “… lacking novelty …”? Read the rest of this entry »