Before I went to ASA last week, I had this grand idea that I would do a sort of journal-blog thing, where I’d periodically write little snippets about what was going on and how I was feeling. I started off really well, too, but all of it basically went out the window when Holger came to pick me up Sunday morning.

Let me preface this post by saying that most of the other members of ORCAA have been to a big conference before, including this one last year. This was my first—I had given poster presentations at small symposia, but nothing like this. It was also my first proper presentation.

The first thing you have to realize about ASA is that it’s the Acoustical Society of America. This means that any field that has anything to do with acoustics is invited. Biomedical acoustics, architectural acoustics, musical acoustics…these are just a few of the technical committees represented at this conference. It’s overwhelming. Mostly I hung around with the Animal Bioacoustics crew, which of course makes sense—this is most of what our lab does. I met tons of amazing people: other students, post-docs, researchers, professors. I even reconnected with several people from my old lab, the Cornell Bioacoustics Research Program.

My talk was on Monday, in the first session. I honestly don’t remember giving it, except for the point when my slides skipped too far ahead too quickly and when Niki dropped her cup and made me laugh. I was told it went well, though. I do remember answering questions, and feeling like I was able to respond to whatever was thrown at me without embarrassing myself. I even worked in a great response involving natural selection.

The nice thing about having your talk in the first session on the first day is that you have the rest of the conference to relax. The bad thing about having your talk in the first session on the first day is that people don’t always make it to see you. Many friends I made throughout the week didn’t get the chance to see me speak, and nor did one of the best connections I made during the week, Andrea Simmons. Andrea has been doing frog bioacoustics work at Brown for a long time, and I got to talk to her about both her work and mine on the last day I was there. She seemed very interested in what I’m doing, especially moving forward with the work I’m planning for my Ph.D. She also wants to come out and record our invasive bullfrogs with her array!

There were so many amazing talks given by tons of amazing researchers. I learned about horseshoe bats and their weird head movements. I learned about greater prairie chicken vocalizations. I even learned about frog-biting midges that are attracted to their prey through mating calls! And oh, the things people are doing with marine mammals! Marine mammal researchers get the coolest toys, I swear. Arrays and tags and three-dimensional plots of dives…so cool!

The entire experience was overwhelming, intense, and immensely gratifying. I felt humbled to be a part of such an amazing group of researchers, and proud and grateful to be welcomed among them. You only get one first big conference, and I like to think I nailed this one.

I’ve made a Storify of my tweets and others from the conference that you can see here. There was a budding and tight-knit social media presence at the meeting this year, which was great to see; a lot of the friends I made were made through Twitter! Other awesome ASA Storify collections can be found here by Ben Taft, and here by Will Slaton (two of my fellow live-tweeters).

 

Soundbites is a weekly (biweekly, occasionally) feature of the coolest, newest bioacoustics, soundscape, and acoustic research, in bite-size form. Plus other cool stuff having to do with sound. Welcome to November, everyone! Fall is definitely here! I promise I’ll have a proper ASA post up soon, but in the meantime here are your Soundbites for the week!

Cruise ships may be having an impact in developing tourist marketsthe good thing about ecotourism is that you’re not openly depleting resources the way you used to be. The bad thing about ecotourism is that increased exposure can degrade the environment. Places like the Eastern Mediterranean and the Adriatic are facing increased noise levels because of increasing tourism.

Microclimate affects frog callsabiotic noise like streams and waterfalls can have as much of an impact on vocalizing animals as anthropogenic noise. Here the researchers wanted to know if frogs in different microclimates (near stream, far from stream) were changing their call frequency to overcome stream noise, and they were!

Fun link of the week this week comes from Holger and Radiolab–the story of a vest that helps deaf people hear.

 

Soundbites is a weekly (biweekly, occasionally) feature of the coolest, newest bioacoustics, soundscape, and acoustic research, in bite-size form. Plus other cool stuff having to do with sound. I’ve been doing really well on this weekly thing, but I might break my streak next week as I’ll be in Indianapolis for ASA(!). That just means you’ll get a real blog post from me next week!

Aposematism led to increased vocal diversity in poison frogstip o’ the finder hat to my Garcia labmate Lindsey for this one, and it’s brilliant. You know those little brightly colored poisonous frogs? These authors wanted to know if aposematism (displaying bright colors like that as a warning to predators) might lead to increased vocal diversity, since they’d have to worry less about predation. And it did! In conjunction with sexual selection, aposematism allowed the evolution of a broader vocal repertoire!

Silvereyes shift their frequency down in urban noise–and it worksThese are silvereyes. Silvereye birdsThey’re really cute. You can find them in Australia and New Zealand (which is where I took this photo). Most animals shift their frequencies up above urban noise, but it turns out silvereyes shift theirs down. This increased the predicted effective space of their alarm call 20%!

Fun link of the week: Robert Krulwich of Radiolab wonders about singing bats!

 

Soundbites is a weekly (biweekly, occasionally) feature of the coolest, newest bioacoustics, soundscape, and acoustic research, in bite-size form. Plus other cool stuff having to do with sound. 

High-frequency vessel noise may have an effect on marine mammals in shallow watermuch of the anthropogenic noise that we’re concerned with at ORCAA, whether it’s road or vessel noise, is low-frequency because of the attenuation of higher frequencies. However, in shallow water, the high frequencies may not attenuate as much and may therefore cause masking for higher-pitched odontocetes.

Direct-developing frogs are more reliant on climate cues to start callingwhat a week, we get one whale link and one frog link! There are some species of entirely terrestrial frogs that don’t go through a tadpole stage; instead, they hatch as mini adults. However, the eggs still need to be kept moist while they’re developing. These researchers found that the onset of calling was more closely tied to high humidity and rainfall than it was to overall air temperature, which is a different cue than most species of tadpole-metamorphosing frogs.

Fun link of the weekI’ve been practicing for my presentation at ASA in a couple of weeks, so I’ve been asking myself this question regularly: “does my voice really sound like that?” Here Greg Foot examines why our voices sound different on recordings.

Soundbites is a weekly (biweekly, occasionally) feature of the coolest, newest bioacoustics, soundscape, and acoustic research, in bite-size form. Plus other cool stuff having to do with sound. 

Proximity to wind turbines reduces brood parasitismthis is fascinating. These researchers looked at nest success in relation to proximity to wind turbines, and only found a difference for one species, the blue gnat-catcher. It turns out that nests closer to wind turbines had less of a chance of being parasitized by brown cowbirds. This presents an interesting dichotomy between managing for wind turbines and managing brood parasitism.

Invertebrates may also be impacted by anthropogenic noisewe at ORCAA work entirely on vertebrates, but these authors make an excellent point that invertebrate species have the ability to hear anthropogenic noise. As they are a huge part of food webs in all ecosystems, neglecting to study their response to noise is neglecting a huge part of the systems we study.

Fun link of the weekthe loudest sound in recorded human history was heard 3000 miles away. 3000 miles. That is one loud volcano.

Soundbites is a weekly (biweekly, occasionally) feature of the coolest, newest bioacoustics, soundscape, and acoustic research, in bite-size form. Plus other cool stuff having to do with sound. Well, Soundbiters (your new collective noun), term has officially started and the ORCAA students are off and running. 

Automated frog call detection–it WORKS! Oh man guys, this is so cool. These researchers developed an automated system for frog identification by call, and it worked even on species they didn’t train the detector on! Talk about huge implications for more efficient monitoring in remote areas!

Cichlids aren’t impacted by boat noise playback: we talk a lot at ORCAA about the negative impacts of anthropogenic noise, so occasionally it’s refreshing to see a species that isn’t impacted in our ever noisier world. Development of this species of cichlid fish was not impacted by playback of boat noise.

Fun link of the week: to be totally honest this has very little to do with sound except that an explosion is involved (just a small explosion, I promise). It’s the first day of October and that means PUMPKINS!! You can make a self-carving pumpkin with calcium carbide and hydrogen peroxide! I would totally try this this Halloween except I’m spending the week prior in Indianapolis for ASA.

 

Soundbites is a weekly (biweekly, occasionally) feature of the coolest, newest bioacoustics, soundscape, and acoustic research, in bite-size form. Plus other cool stuff having to do with sound. It’s officially the last Soundbites before the fall term at OSU begins! 

Light and noise pollution from urban developments may affect ecosystemsthe authors did a literature review on studies done on the impacts of light and noise pollution across Australia, and found some glaring and disconcerting gaps in the research. They highlight several effects from light and noise pollution, including stress, changes in foraging, increased predation risk, and reduced reproductive success. They propose that more careful city planning could mitigate the impacts.

Cuttlefish change visual signals in presence of high noise levelsI’m a sucker for cephalopods, and this study is great. Cuttlefish aren’t acoustic animals; in fact, they use complex visual signals to communicate. However, in the presence of anthropogenic noise playback, they changed their color more often than in the absence of noise. This suggests that anthropogenic noise can affect behavior across modalities, and can have an impact on non-acoustic species. Very cool.

Fun link of the weekit’s the first day of school for OSU students on Monday! And granted, as graduate students, that doesn’t really mean much for most of us in ORCAA, since the work doesn’t stop with the end of term. But trust NPR to deliver when I type “sounds of back to school” into Google.

Soundbites is a weekly (biweekly, occasionally) feature of the coolest, newest bioacoustics, soundscape, and acoustic research, in bite-size form. Plus other cool stuff having to do with sound.

Frequency and amplitude can be used to identify individual wild wolvesthese researchers developed a code that was able to identify captive Eastern wolves by their howls. Naturally, they wanted to see if it was possible to do a similar identification on wild wolves, and lo and behold, it worked! They used both frequency and amplitude to identify wolves; the use of amplitude is especially interesting. This has really great implications for use of acoustic monitoring in wolf surveys.

Social mole rats have more complex vocal repertoire than solitary mole ratsdid you know mole rats had vocal repertoires? I didn’t. There are social species and solitary species, and here the idea is that sociality necessitates a more complex vocal repertoire than solitary life. Interesting implications for communication across lots of social species.

Signs of stress found in vocalizations of translocated elephantsan elephant herd got translocated, and their vocalizations showed that they were a little stressed out by that. They got higher-pitched, which is an indicator of stress.

Fun link of the week: The Times gets a bout of nostalgia and fills its newsroom with the sounds of typewriters. Maybe it’ll make their reporters more productive…or just infinitely more annoyed.

 

Soundbites is a weekly (biweekly, occasionally) feature of the coolest, newest bioacoustics, soundscape, and acoustic research, in bite-size form. Plus other cool stuff having to do with sound. Can you believe it’s September already? I can’t! This is a frog-heavy post because a lot of interesting frog stuff has been coming out lately; my apologies to marine mammal fans.

Multimodality as a frog coping mechanism for traffic noisewhat’s multimodality, you ask? Multimodality refers to communicating in more than one sensory mode; in this case, using both vocalizations and visual cues to communicate with potential mates. While these authors found that switching sensory modalities wasn’t the case for European tree frogs, they do say that this may happen in other species (like the tungara frog I mentioned in my post about the Frog Communication Symposium).

Traffic noise causes stress in frogsthis is VERY cool. Traffic noise playback causes physiological signs of stress in the form of increased corticosteroids in female wood frogs, who use the chorus of male frogs to orient toward the breeding pond. Not only is there stress, but they tend to freeze up and not move, which may impede breeding migration. This may be because the stress hormone is causing an immobility response, or because they can’t figure out where the chorus is due to masking.

Fun link of the weekyou know how usually I post a pop press article or a video here? Well this week, it’s a third paper. It’s a paper on coffee roasting acoustics. Apparently it might be helpful for coffee roasters to listen to their beans cracking. I don’t drink coffee, but many of the ORCAA do (Holger especially!), so this seems like a great way of combining two of the lab’s loves!