iHerp Australia Issue 11 | Page 49

1. Crested Anole 2. showing brightly-coloured dewlap used for display. Image by Robert Eastman. 2. The introduced Indian Mongoose - a ‘bad animal’. Image by Gustavo Lillo. considerable distances when extended. We snap some pictures of Magen’s Bay, before trekking back down the path toward the public beach. Once at sea level, Gustavo wanders off, hoping to photograph more birds, while Renata takes me to the remains of the once- exquisite arboretum, now a labyrinthine mass of broken tree trunks, clinging vines, and tattered leaves. in the viewfinder of his camera to show a pair of weasel-like creatures chasing each other in the tall grass. “Oh,” Renata sighs. “That’s a bad animal. That’s a mongoose.” the lizards experienced a ‘shift’ in dominance. The most common lizards have been displaced by less common species.” At the University of Puerto Rico, Humacao Campus, associate professor and herpetologist Neftali At the outset, the small Indian Ríos-López concurred, having Mongoose (Herpestes javanicus) observed the identical phenome- was brought to the islands to help non. “Some lizards live in the control the rat population on the canopy, where they thrive in drier, sugarcane plantations. However, more sunlit conditions. Because of the two didn’t interact much, since Maria those drier conditions that the mongooses are diurnal and were once exclusive to the canopy This post-hurricane restoration rats maraud at night. Instead, are now extended down to the project, to improve both the these carnivores of the civet family forest floor. As a result, those natural ecosystem and its (ranked among the top 100 world’s animals are better adapted to resilience, while honouring the worst invasive species by the those conditions and have started history and legacy of the area, is IUCN) managed to severely displacing and substituting an enormous undertaking that has deplete a number of resident animals that are adapted to the been assigned to our guide. “My species of herpetofauna, including once-cooler conditions.” first task is to identify the different many of the islands’ snakes. plant and tree species. Then we’ll Besides voracious predation by Extreme weather systems will determine what to keep and how introduced mammals, including continue to scourge the islands of to replant.” the mongoose, the other biggest the Caribbean and, from time to threat to the reptiles and time, lay waste to much of the Just as I’m about to comment on amphibians is loss of habitat due landscape. But in spite of the the daunting assignment ahead of to uncontrolled urban and widespread destruction dealt by Renata, Gustavo comes crashing commercial development. Irma and Maria, the ecosystem through the scrub, excited. “I took has managed to recover and a snapshot of some kind of And, of course, hurricanes. Irma adapt. Even hurricanes can’t animal. There were several of and Maria caused indescribable vanquish the basic law of ‘survival them. I don’t know what they are.” chaos to the environment, and of the fittest’ even fostered a significant change He hurries alongside the wildlife in dynamics. Renata explains, “We specialist and enlarges the image noticed that after the hurricanes,