Archive | January 2018

The Sun Spider

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Solifuge credit: Jon Richfield Wikimedia CC BY-SA 3.0

 

When living in the bush in Africa your life becomes attuned to the rhythms of nature. Up with the sunrise, the spurfowl, guinea fowl and francolins won’t have it any other way, their raucous calls start well before the sun is actually visible. Physical work can be done until about mid day and then if possible its best to seek shelter till around 4pm when the sun is at least not high enough to cook you yet still pretty hot. By 8pm its dark so there is nothing else to do but sit back around a fire and let the night envelope you.
I am living so basically at the moment, my clothes are starting to look shabby after two weeks of hand washing in minimal water. I am however improving my skills daily at cooking on an open fire. It is amazing what you can do with a skillet, a pot and bits of old rebar and wire. I may have invented a new dish last night, Christmas Eve, when I conjured up a gemsbok stir fry.
The wood here gives new meaning to the term hard wood. Luckily for me there is a ready supply of wood due to the need for bush clearing on this cattle farm. Just a few pieces are enough to get really good coals glowing to cook over. They use a deep three legged cast iron pot in Africa for cooking stews, known as a potjie here in Southern Africa. I might even try my hand at bread next.
So last night after a good feed, Trev and I sat contemplating the embers whilst watching nightjars and bats hawking what looked like flying termites. It has rained recently triggering the eruption, earlier we watched guinea-fowl, hornbills, starlings, drongos and a whole host of other small birds running back and forth slurping them up straight from the holes before they could even get airborne. There is a constant suzzz of insect noise interrupted by the screech of barn owls and the odd jackal.

Then there is a deathly screech to rival that of the barn owl, what is it you ask? well it’s me. Something has just ran up my leg across my back up on to my head and then dropped down again to the ground between my feet. I am not usually given to screaming like a girl and creepy crawlies don’t usually bother me, but there is nothing quite like the dark to bring out the pathetic in us. So a quick scrabble for flash lights ensues and the culprit is spotted.
It’s a solifuge, otherwise known as a sun spider. Not actually a spider, though belonging to the same class, arachnida, they form an order by themselves, solifugae. They differ from spiders in not having silk glands and therefore do not spin webs. They appear to possess 10 legs but in fact the front most pair are actually pedipalps that act as sensors and aid in feeding. They are voracious predators and will eat anything they can overpower such as spiders, scorpions, insects and invertebrates.
Totally harmless to humans they do however install a lot of fear. This is partly due to two behavioural traits. If disturbed in the day the solifuge will head for the nearest dark place, often the very shadow cast by the human that caused the disturbance in the first place, giving the false impression that the solifuge is running at you in attack mode. Similarly at night they will follow a light source, again, often that of a human with a flash light.
The second trait is that they move like greased lightning. They are constantly zipping from here to there in a frantic search for prey to keep their high metabolism ticking over. They have also been known to take human hair to make their nests.
You are not likely to pick one of these up on Snapshot Serengeti’s camera-traps but if you ever get the chance to observe one of these arachnids going about its daily business it is really very fascinating, if of course you can get over your human fear.

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Snapshot Serengeti – Upcoming Changes

*This weeks blog was written by Jamee Snyder, project coordinator and administrative assistant with the Lion Lab, University of Minnesota. She tells us all about a wider a project that Snapshot Serengeti has evolved into and what we can look forward to in the near future.*

 

Seven years ago, the University of Minnesota Lion Center set out 225 cameras in Tanzania’s Serengeti National Park. These cameras have recorded over 50 species including some of the most threatened species on Earth. With help from over 140,000 citizen scientists from around the world, millions of photographs were reviewed and classified over the past seven years, which provided park managers, conservationists, and researchers with the necessary information to analyze African wildlife population dynamics. This collective effort is a major contribution to ecological research, allowing for the evaluation of long term trends in wildlife populations as well as best practices in conservation management of charismatic african mammals.

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A Snapshot Serengeti Camera-trap image

Snapshot Serengeti was one of the first camera trap surveys to document wildlife populations in a national park and is now one of the longest running camera trap surveys in the world. We have learned a lot over the years, from how to keep our cameras safe from hyena jowls to retrieving data from memory cards that have gone through a wildfire. We are continuously looking for ways to improve this project.

Thanks to years of experience, your participation, and help from several organizations in the U.S. and Africa, we are excited to announce that Snapshot Serengeti is expanding into an international conservation initiative called, “SnapshotSafari.”

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Don’t worry! Snapshot Serengeti isn’t going anywhere. In fact, it will remain essentially the same as we transition into our new platform. The discussion forums and personal image collections will still be available to current and future users. Now, participants will be able to see numerous other parks in addition to the Serengeti. SnapshotSafari will showcase camera trap images from multiple camera trap grids inside dozens of parks and reserves located in six African countries. Intrepid citizen scientists will be able to choose from various exotic habitats, including but not limited to: the Sand Forests of KwaZulu-Natal, the Lowveld of Limpopo, the Fynbos of South Africa’s Cape, and the Karoo desert, in addition to such remarkable ecosystems as Mozambique’s Niassa Reserve, Tanzania’s Ruaha National Park, Swaziland’s Mbuluzi Game Reserve, and Botswana’s Makgadikgadi Pans National Park.

By incorporating multiple sites, we can ask more complex questions regarding African wildlife populations and the factors that contribute to ecosystem stability. For example, researchers can compare population dynamics of reserves that are fenced versus those that are unfenced, or theycan evaluate the environments that successfully host multiple predator species without depleting prey populations. Researchers at the Lion Center will use this dynamic platform to investigate the cascading effects of large mammal reintroductions and ways to limit direct human interventions while still maintaining stable ecosystems within fenced reserves. SnapshotSafari provides an opportunity for participating reserves to collaborate and subsequently develop the most effective conservation strategies for protecting biodiversity.

We are working hard to get SnapshotSafari ready to launch in January. We just completed beta-testing, and the feedback has been very positive. To all of the citizen scientists who participated and to those who continue to be involved with Snapshot Serengeti, we are extremely grateful!

Now, we need your help to finish classifying the final series of images on our original platform, Season 10, at http://www.snapshotserengeti.org before we initiate SnapshotSafari, which will host Season 11. We are very close to finishing classification of these images, so don’t hesitate to invite your friends and family to take a trip to the Serengeti through the lens of one of our camera traps and classify wildlife. Let’s push this meter to the end!

Stay tuned for an official count down, so you can be one of the first to participate in SnapshotSafari and contribute to our collective knowledge and ability to successfully conserve African wildlife.