Archive | May 2015

More mud

So much for being clean again…

P1000782Norbert, our Tanzanian field assistant, always laughs when I come in from the field covered in mud. He takes pictures each time, telling me that “when I write my book” I need to publish these photos to show people that “to get PhD, you must be THIS much mud!”

 

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All About Lions

Guess who just gave a fancy talk about Lion Project and Snapshot Serengeti!

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Major props to TCS Expeditions and the Four Seasons giving me a chance to talk about our project and spend the day in such a beautiful resort. I highly recommend the showers — feels good to be clean again!

Savannah Sunrise

The work I’m doing out here in the field involves plenty of early mornings and late evenings. It’s more than a bit exhausting, but there is one fantastic bonus: amazing sunrises and sunsets! Here are some of my favorites from over the past few days:

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Stuck in the Mud

Getting to know the mud of Serengeti has been the major hurdle of my wet season. The mud out here comes, I have discovered, in many different treacherous flavors. Surprisingly, you can get a car through the largest puddles by plowing straight through the middle, but the edges of these small lakes (that you might, say, drive on to go *around* the seemingly-impassible body of water) are death-traps. Silty pale sand on the road is often a sign of stickiness and tall grass can hide all manner of trouble. If the sun happens to bake the right kind of crust on the road after a rainfall, solid ground can collapse right out from under your wheels: as I discovered the other evening, under you go. I had been driving out to an area of the park called Barafu when my journey ground to a halt in two feet of thick mud.

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Often, with the right amount of tenacity, you call bully your way through the mud. Locking the wheels, jacking up the car, throwing spare tires and dead trees and rocks and whatever else you can find under your floundering tires sometimes works. If you’re in the right areas at the right time of day, passing tour cars often go out of their way to help you out (a favor I try and return at every possible convenience, building up karma for the next big stick). This particular situation, however, was neither the right place nor the right time. It was early evening, and I was miles and miles away from Serengeti Central. Asking for help this late and this far from our field crew would have been irresponsible and, fortunately, unnecessary — I had been heading out camping that evening to start with, and always keep the car stocked with emergency supplies (sleeping bag, snacks, and, of course, a bottle of Safari Lager).

While it was still light, I tried to make it the kilometer or two to a nearby kopje, hoping that somewhere along the route my cellphone reception would kick in and I could at least send out some coordinates for a tow the next morning. No dice: the sun quickly began to set and I had to beat a hasty retreat to the car. Making the best of an inconvenient situation, I popped the top off of a beer and crawled up onto the hood to watch as the sun drift below the horizon. I almost spilled half that beer down my front when, with a roar, a lion emerged from the grass less than two meters away from where I was sitting.

She was a lone female, a bit scrawny and mangy (I was pretty sure I recognized her from earlier on in the day). Stepping onto the road, she sauntered over to the car, roaring every few steps. Was she calling for the rest of her pride? I couldn’t see or hear any others, and the lioness circled the Land Rover only once before continuing down the road. Clutching my beer, I experienced an emotion I have felt only once before, diving with great white sharks: knowing that you’re safe (probably), in your cage or in your car, but also understanding that you’re out in a predator’s natural habitat – and that those predators know you’re there. I can only think to describe it as an overwhelming sense of respect tinged with adrenaline, followed by an aftertaste of awe and thankfulness when the predator finally passes you by.

Needless to say, as soon as the lioness was a fair distance away, I scooted quickly back inside the car and may have even rolled the windows up a bit. I could hear her roaring for the next hour or so, and based on the footprints in the mud surrounding my Land Rover the next morning, she came back once or twice to check up on me.

On a lighter note, I’d like to make a special shout-out to the six-tour car cavalcade of young university men that took time out of their safari the next morning to drag me out and feed me chocolate bars (perhaps have to get stuck more often…?)

Serengeti Update #1

First field update! I’ve been out in Serengeti Park for just over a week now, and I’m fairly surprised to report that things are going rather swimmingly. It was certainly my smoothest travel experience from the USA to date: no plane delays (unlike last time), no missing luggage (unlike last time), no egregiously extended stay in Arusha waiting for permits (unlike last time).  To be sure, field life takes a bit of getting used to again. We’ve had spitting cobras in the bathroom, ververt monkeys breaking into my car, and little black flies are out in full force. But the Serengeti this time of year is completely worth it. Last time, my field season only encompassed the dry season, but in the current rainy period, Serengeti is a completely different place. Everything is so green it almost hurts your eyes to look at it. Up in Barafu, along the eastern edge of our camera trap grid, are herds of wildebeest, zebra, and buffalo so large you can hardly believe it. (My first time driving through a herd of buffalo several hundred strong required more courage than I’d care to admit – buffalo are big and mean and certainly warrant a healthy respect. They’ve been known to ram our field vehicles before and cause all sorts of trouble).

There’s a few projects I’m working on this year with the camera traps: first and foremost finishing up the playback experiments I began last season. Every morning for ten consecutive days, I’d head out to particular camera traps and play lion roars, simulating the short-term presence of predators in an area. We see from the camera traps that herbivores start to evacuate from these scary areas (or, “areas of artificially elevated predation risk”, to use a more scientific jargon) for not just days or hours, but periods of up to three weeks! I’m interested generally in the trade-offs that herbivores have to make between avoiding areas where predators are and still obtaining enough resources to get by. Do they only avoid areas where there’s a high chance predators will be, like lion territories, despite all the tasty forage that may be contained inside? Or is the avoidance being exhibited on a finer scale – like days to weeks, rather than months to years, like we’re seeing in this experiment? Perhaps there are some species of ungulates that don’t try and avoid predators on a spatial scale at all, but rather rely heavily on evasive and defensive behaviors when they encounter a hungry carnivore. Hopefully these continued experiments and the Snapshot data in general will help elucidate answers to some of these questions!

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speakers for playback setup

I’m also working on another round of habitat characterization – this time, we’re interested in the soils and vegetation that help to determine the forage quality at a particular site. Now, to tell the truth, I wasn’t originally that enthused about these particular collection tasks, but I’ve discovered that there’s incredibly satisfying about grubbing around in the mud scraping out soil samples. My inner 8-year old is feeling more rejuvenated by the day. Lion House is started to become more than a little cluttered with sample bags of dirt and grass clippings – pole sana, other field assistants, it’s for Science!

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bookshelf-turned-soil collection storage area