As I mentioned in my last post, I’ve spent the last 6 weeks or so on a research trip to Australia. Most of my time was spent at the University of Technology in Sydney, but for the last 2 weeks, I traveled to Port Phillip Bay (the bay that Melbourne is on) to meet with some colleagues about their seagrass resilience project. One of our days was spent snorkeling around their field sites. The video above was taken by Dr. Peter Macreadie, and it provides a great sense of just how pretty these seagrass sites are. (I make a cameo snorkeling nearby in the blue shorts.) It was chilly (~ 70 degrees in and out of the water), but it was fun to take a look around!
Lake MacQuarie, near Sydney. In Randall's last post, she describes the research they did on foundation species like oysters, algae, and clams.
David and I are in Sydney, Australia, on visiting research appointments with the University of Technology Sydney. We arrived the first of the year, and after recovering from jet lag and getting our bearings, we embarked this week on setting up a couple of new experiments. We have great local “guides” – Dr. Peter Macreadie (UTS), Dr. Paul York (UTS), Dr. Paul Gribben (UTS), and Dr. Melanie Bishop (Macquarie University) – to introduce us to the field systems and collaborate with us on these projects.
Our seagrass and razor clam experiment is set up at Point Wolstoncroft in Lake Macquarie (north of Sydney).
In the Grass, On the Reef: Testing the Ecology of Fear
Premieres on WFSU-TV Wednesday, June 29 at 7:30 PM, 6:30 CT. In high definition where available.
Rob Diaz de VillegasWFSU-TV
This clip is a short segment on one of the predators featured in this program: the horse conch. It’s practically an ecosystem onto itself, as you can see in the video’s poster frame above. Barnacles, crepidula, bryozoans, and other marine creatures that affix themselves to hard surfaces settle on its shell. In the video you’ll see its bright orange body as it roams the seagrass beds of the Forgotten Coast. And you’ll see it eat another large predatory snail, the lightning whelk.
It kind of looks like one of those vintage ’80’s jackets adorned with mirrors and sequins- mollusk style. This horse conch’s got a little bit of everything on it, the result of an interesting reversal of roles in this seagrass bed on Bay Mouth Bar.
When I heard it was supposed to rain on Saturday, I was a little bummed. I was planning on taking the family to the FSU Coastal and Marine Lab Open House followed by the FSU Spring Game (where my 12-week old son could attend his first football game featuring my two favorite teams). Luckily, the storms rolled through early in the morning and made for a nice day at the coast.
I started off by visiting my friends at the Randall Hughes and David Kimbro labs. Robyn and Emily held down the fort in the Hughes lab, where kids watched a very peculiar sport. As Randall’s previous post promised, there were indeed periwinkle snail races. As you can see from the photo at the right here, the snails were color coded (white and blue) and numbered so that they could be told apart. Some crown conchs (periwinkle predators) were placed into the tubs to give the smaller snails some incentive to climb. The fastest climbers won. Let’s watch part of one race:
If you’re a regular reader of the blog, you’ll realize that we often talk about similar research questions or ideas in the context of different projects. As David mentioned in his description of the Baymouth Bar project, this overlap is usually intentional: as ecologists, we’re interested not only in the specific habitats that we study, but also in the underlying factors that affect these habitats and the valuable services that they provide to we humans.
It may appear at times that we’ve been covering a diverse array of topics, and while this is true, all of these topics are interconnected- a web of topics centered around a couple of central themes. The diagram below is the map that shows where every post-topic fits into these central themes. Even the artists, writers, and photographers we occasionally feature have their place amongst ecological processes like sedimentation and the non-consumptive effects of predators. Every post from here on out will have one of these icons on it- if you don’t know what the icon means, just click on it and you’ll be back at this figure with an explanation:
Dozens of different mollusk species interact within a relatively small area at Bay Mouth Bar, from all manner of bivalves to the predatory snails that eat them (and each other).
As soon as you arrive to BMB, it is easy to imagine and feel the same curiosity and fascination that Robert Paine brimmed with when he first immersed himself in the sand bar fifty years ago.
If someday you have the opportunity to visit BMB at low tide, then you would receive much pleasure in looking at 40000 m2 of sand, full of awesome critters! Twenty minutes by kayak, that’s it!
Since I started working at FSU’s marine lab, I have frequently cast longing looks at a local study system that hasn’t been examined in over 50 years. Back in the 1960s, the world’s most famous ecologist (Bob Paine) was a post-doctoral researcher working at FSU’s Marine Lab. It was at this time and place where he began developing some of the concepts that would transform the field of ecology. Continue reading →
A listing of the animals seen in the slideshow is at the end of this post.
March is Seagrass Awareness Month, so it seems a fitting time to share some photos we took last fall. Seagrass beds are an under-appreciated habitat; they’re very productive and are more important than meets the eye (here I admit that neither seagrass beds or salt marshes seemed all that interesting to me until I actually went into them and took a closer look). Here are a few quick facts: Continue reading →
A local crustacean (hiding in a snail shell) makes a snack of epiphytic algae.
Most of my blog posts have revolved around my research in salt marsh habitats, with mention of seagrasses only in the context of their role as wrack in the salt marsh. However, I’m also interested specifically in seagrasses and the community of animals that they support, and particularly in understanding why seagrasses are experiencing declines in so many regions of the world. First, a little background on the plants themselves: