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March 23, 2010

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Large mammals on the summit of Auyan Tepui: The order Pilosa on the tepuis.

Abstract: Since their formal description by western scientists over a century ago, the dramatic tepuis of the Guiana Highlands (GH) have been a source of fascination and continuing scientific research starting with Roraima Tepui and proceeding to Auyan Tepui in the 1930s. After nearly a 80 years of exploration and surveying, the scholarly concensus is that larger mammals are absent from the tepui summits. However, consistent reports of larger anaimals sighted on the tepui summits (almost exclusively lowland organisms), continues. The 2008 photographing and sighting of the Southern Tamandua Tamandua tetradactyla on the summit of Auyan Tepui represents an interesting case of medium sized exclusively insectivorous mammal living on the summit of a tepui. Diagnosed as Tamandua tetradactyla nigra , this animal is mentioned to inhabit the summits of Auyan Tepui by Tate in the late 1930s. Other forms of the order Pilosa mentioned to inhabit the tepuis are the giant anteater Myrmec...

New gear review and problem solving

Introduction Over the last several months, Biokryptos project Tepui Watch entered phase three, camera trapping in uncharted parts of Auyan Tepui. We have had a great deal of success, with news images and confirmed captures of a variety of animals previously undocumented on any tepui summit . However, we have had a variety of difficulties including false captures, potential sampling biases, equipment loss and limited field time. We have also missed a meaningful segment of the faunal composition of Auyan; the herpetofauna. In order to address these deficiencies in our methods, we at Biokryptos have added new gear which will be field tested and evaluated for future use, and adopted some new methodologies for surveying fauna in unexplored portions of the tepui Camera Traps The first new piece of gear we are going to test is the Moultrie 180i one hundred and eighty degree panoramic camera trap. Manufactured by Moultrie inc, this camera is unusual in that it can provide an approximate ...

Confirmation of Puma concolor on the talus slopes of Auyan Tepui

Recently, Biokryptos has been working to maintain our project Tepui Watch on the summit of Auyan Tepui. The work has been difficult and we have needed to re-evaluate our survey strategies and replace and service our camera traps. In October 2018, with the assistance of board member Alberto Pomares and lead investigator Arturo Berti, the camera traps were tested on the talus slopes of Auyan at Campo Guayaraca to determine their functionality. This three week long test resulted in startling images of the big cat Puma concolor (aka puma, mountain lion, leon de montana) on the talus slopes of Auyan Tepui at Campo Guayaraca , 1,100 meters asl. Puma captured September 22 2018 using a Moultrie 180 camera, Campo Guayaraca 1,100 meters elevation Camera Trap Test Early in 2018 all cameras were removed from the summit and taken into Caracas for inspection and repair by board member Vittorio Assandria. Of the twelve camera traps used by Biokryptos since our pilot study in 2012, e...

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