Un-reclaiming the name – I am not a zoologist

zoologist

[Disclaimer – this is just my opinion. I do not speak for everyone at EcoEvo@TCD]

Recently on Twitter there has been a call to “reclaim the name” of Botany accompanied with the hashtag: #iamabotanist. The response has been really cool – lots of different scientists working on different questions have posted pictures of themselves on Twitter, often with their plants. It’s amazing the diversity of researchers out there who identify as botanists.

But why try to reclaim the name Botany? The issue is that Botany as a discipline is seen as rather old-school and irrelevant to current scientific challenges. For these reasons it tends to be unpopular with undergraduates and also with university governing boards. More and more Botany departments are being closed or merged with other departments, and Botany courses are being revamped and renamed to attract more students. Zoology departments are suffering similar fates. Like Botany, Zoology is considered an outdated discipline. It tends to fare better with undergraduate students because there are always people who want to work in a zoo or think they might get to cuddle a panda!

I appreciate what the #iamabotanist campaign was trying to do, but I’m not sure I agree. I work in a Zoology department, but I am not a Zoologist. This isn’t because I think Zoology is irrelevant as a discipline, it’s because I’m far more interested in the questions I’m asking, than in the taxa I use to test my hypotheses. Yes, the mammals I work on are adorable and fascinating, but what drives me as a scientist is trying to understand their evolution and ecology, and how the two things are connected. I’ve mostly worked on mammals so technically I’m a mammalogist. I’m happy with this label, but it’s not what I’d call myself if anyone asked. I’d identify as an (macro)evolutionary biologist, or an evolutionary ecologist. I test my ideas on mammals because these are the group I have most data for, but I’m equally fascinated by insects, bacteria, epiphytic plants, parasitic helminths etc. I think we do a disservice to the science if we focus too much on one taxonomic group.

Zoology and Botany at Trinity are particularly diverse disciplines. We have a couple of “classical” taxonomists/systematists, but also phylogeneticists, landscape ecologists, behavioural ecologists, demographers, evolutionary biologists, conservation biologists, developmental biologists and parasitologists. We teach courses across discipline boundaries, and often the person doing research closest to our own is in the other department. But sadly the Botany-Zoology divide still exists, mostly for reasons of history and geography (we are in separate buildings). This is holding back science, rather than pushing it forward.

Maybe we need to identify as botanists or zoologists (or any other taxon specific -ologists) less often, rather than more often. Forcing general questions and principles down taxon-specific lines seems rather backwards. It also isn’t helpful to our students if they only learn about animals and not the plants they eat, or only learn about plants and not the animals they are being eaten by. This interconnectedness is particularly important in light of the challenges of global change and the current extinction crisis.

So in conclusion, I think animals are cool, but I’m not a zoologist.

Author: Natalie Cooper, ncooper[at]tcd.ie, @nhcooper123

Image Source

Anatomical enablers in the evolution of grasses

Thuarea (a C4 grass in flower)
Thuarea (a C4 grass in flower)
A paper just published in the Proceedings of the National Academy of Sciences USA (including Trevor Hodkinson, Botany, School of Natural Sciences, TCD; Trinity Centre for Biodiversity Research) highlights the role of leaf anatomical change in the evolution of a type of photosynthesis (classified as C4) that has allowed a large group of grass species to dominate warm regions of the world and become important crops such as maize, sorghum and sugarcane. C4 photosynthesis is a series of anatomical and biochemical modifications to the typical C3 pathway that increases the productivity of plants in warm and dry conditions. The C4 trait has evolved over 20 times in grasses, and all origins occurred within one species rich group. Leaf anatomy traits of grasses were quantified and analyzed in an evolutionary framework.

 

Statistical modeling indicates that C4 evolvability strongly increases when a particular type of anatomy (proportion of vascular bundle sheath) reaches 15%.  A reduction in the distance between the bundle sheaths occurred before the evolution of the C4 grass group but not in other groups of grasses which lack the C4 trait. Therefore, when environmental changes promoted C4 evolution, suitable anatomy was present only in members of this group, explaining the clustering of C4 origins in this group. These results show that key alterations of leaf anatomy facilitated the repeated evolution of one of the most successful physiological innovations in flowering plant history.

Author

Trevor Hodkinson: hodkinst[at]tcd.ie

Photo credit

Trevor Hodkinson

Bamboo systematics: less swaying in the wind

Young shoots of Phuphanochloa Sungkaew & Teerawat.: a new species and genus of woody bamboo discovered by TCD botanists.

The bamboos are an extraordinary group of plants and the only large group of grasses to diversify in forests. They represent a major radiation in the angiosperms with nearly 1,500 species. The Bamboo Phylogeny Working Group (including TCD botanists Sarawood Sungkaew and Trevor Hodkinson) have recently used molecular, anatomical and morphological characters to update the tribal and subtribal classification of bamboos including the new genus (Phuphanochloa) shown in the photo.

Authors

Sarawood Sungkaew

Trevor Hodkinson: hodkinst[at]tcd.ie

Photo credit

Trevor Hodkinson