Category: INVASION BIOLOGY

Ranchers Deploy Donkeys Against Dingoes in Australia

In yet another example of species that have the same diet being complementary not competitive, burros and horses (equids) will defend other species such as sheep against predators. If we think outside the box, perhaps  the equids’ inbred hostility to coyotes, wolves and lions might make them useful in protecting wild species against predation. Countless

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Texas Elk and the North American Wildlife Conservation Model

For 150-years American conservationists have followed the the North American Wildlife Conservation Model. It has been beneficial for waterfowl and iconic big game species across the continent with the exception of elk in far-West Texas. Here on state-managed lands Texas Parks and Wildlife Department (TPWD) bighorn sheep managers kill all elk in the scientifically unsupported

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Are Elk Native to Texas–Historical and Archaeological Evidence for the Natural Occurence of Elk in Texas

This paper began as an effort to persuade Texas Parks and Wildlife Department (TPWD) to cease its efforts to eradicate elk on the state lands which it manages in far-West Texas. Our assumption was that TPWD was acting out of a sincere misunderstanding of science, which could be corrected. As of October 2017, TPWD says

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These Hungry Goats Learned to Branch Out

At Circle Ranch we have also found that goats can be very useful as grazing tools to help maintain habitat for wildlife.

How and Why Holistic Planned Grazing Can Restore Habitat and Ranch Income

  This paper, authored by Texas A&M range scientist Richard Teague and colleague Matt Barnes, discusses what has worked best for planned graziers across the world, and why conventional range studies have been unable to analyze their results. The paper was published in the African Journal of Range & Forage Science. Texas A&M and Dixon

Allan Savory and the Science of Tracking

Over the last 60 years, Allan Savory has at different times worn a wildlife agency shirt and crest, his country’s military battle camouflage, the formal attire of a parliamentarian, and rancher’s dungarees. His in-the-bush and on-the-ground observations gave rise to the physiological insights of holistic grazing and wildlife management; his guerrilla warfare and parliamentary experience

Hunting Moose in Canada to Save Caribou From Wolves

Wildlife interactions are often counterintuitive. When we oversimplify these unimaginably complex systems we do things that inadvertently damage wildlife and its habitat.

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Planned Grazing and Deer

“Properly grazed cattle can improve deer health. Cattle herds can replace the big nomadic grazers with which animals and plants evolved. Plants and animals are symbiotic: Plants need animals as much as animals need plants. What helps plants helps all animals. Biodiversity of plants and animals is good. Multiple species are generally complimentary not competitive.

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Are Wolves the Pronghorn’s Best Friend?

Let’s look for a holistic solution to pronghorn decline in far-West Texas. As discussed in the article below, pronghorn fawn survival triples when wolves are present because wolves control the coyotes which otherwise kill the pronghorn fawns. Cattle removals, predator removals and so-called invasive species removals have drastically altered the wild population equation, throwing the system

Desert Mule Deer “Management”: Does Culling Low-Point Desert Mule Deer Bucks Help or Harm the Herd and Its Genetics?

Culling Mule Deer – or whitetail – is scientifically unjustifiable, and does not improve herd genetics. Note: This post originally appeared on this blog in November 2014 Approach #1: Remove Cull Bucks to Improve Herd Genetics …Jerad Wayne Zachary, Deer Guide Dear Mr. Gill, I hope you are doing well. I just wanted to throw in