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Border Fences Pose Threats to Wildlife on U.S.-Mexico Border, Study Shows

By Guest PostJuly 19, 2011Nature, Sciencearroyo toad, biological diversity, border fences, california coasts, california red legged frog, conservation, department of homeland security, fire, harmful mutations, human impacts, human migration barriers, human population growth, hurricane, impacts on the ecosystem, inbreeding depression, jesse lasky, landscape, species in california, texas gulf, the jaguarondi, the university of texas at austin, threats to wildlife populations, tim keitt, unforeseen disturbances, us mexico border, walter jetz

AUSTIN, Texas — Current and proposed border fences pose significant threats to wildlife populations, with those animals living in border regions along the Texas Gulf and California coasts showing some of the greatest vulnerability, a new study from The University of Texas at Austin shows.

“Our study is the first comprehensive analysis of threats to species across the entire U.S.-Mexico border,” says Jesse Lasky, a graduate student in the laboratory of Tim Keitt, associate professor of integrative biology. “The scale at which these fences stretch across the landscape is large, so it’s important for us to also have a large-scale view of their effects across the continent.” (more…)

Researchers Find That Pollution Forms an Invisible Barrier for Marine Life

By Guest PostMarch 18, 2011Environmentanthropogenic factors, bacteria, chemicals, chlorinated hydrocarbons, coastal areas, coastal water ecosystems, contaminants, discharge, ecosystem based management, evolutionary trajectory, heavy metals, human impacts, human stressors, jon puritz, larvae, los angeles, marine life, municipal treatment plants, nutrients, ocean, pacific coast, petroleum hydrocarbons, plankton, pollutants, population, rob toonen, sea stars, sewage, southern california bight, species, starfish, toxic, united states, urban runoff, urban runoff plumes

Over 50 percent of the population in the United States and over 60 percent in the world live in coastal areas. Rapidly growing human populations near the ocean have massively altered coastal water ecosystems.

One of the most extensive human stressors is the discharge of chemicals and pollutants into the ocean. In the Southern California Bight, more than 60 sewage and urban runoff sources discharge over 1 billion gallons of liquid on a dry day with the two largest sources of contaminants being sewage from municipal treatment plants and urban runoff from highly modified river basins. (more…)

Tag Archives: human impacts

Border Fences Pose Threats to Wildlife on U.S.-Mexico Border, Study Shows

Researchers Find That Pollution Forms an Invisible Barrier for Marine Life