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Remote Philippine island is a biodiversity hotspot
The researchers found over 29 amphibians, 30 lizards, 35 snakes, five turtles, and two crocodilians in and around the island of Luzon.
Mon, Feb 11 2013 at 11:10 AM
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A bizarre soft-shell turtle, Pelochelys cantorii, is just one of more than 150 species of amphibians and reptiles that lives on the Philippine island of Luzon.(Photo: Rafe M. Brown)
A misty mountain range on the Philippine island of Luzon boasts more than 100 species of reptiles and amphibians, according to a new catalog of the region's species.
On the entire island, more than 150 reptile and amphibian species exist.
The catalog, published on Feb. 7 in the journal ZooKeys, is the first for the remote region, known as the Sierra Madre Mountains, which lies on the Northeastern portion of the island. The study reveals that the region may be a hidden hotspot for biodiversity.
The study combined data from several extensive surveys done over the past years, as well as an exhaustive search of all historical museum records.
The team found over 29 amphibians, 30 lizards, 35 snakes, five turtles, and two crocodilians.
For instance, they catalogued a frog called Platymantis cagayanensis, which sports yellow upper irises and calls ("tuk-tuk-tuk") from understory vegetation immediately following rain. Other characters tallied included a colubrid snake (Hologerrhum philippinum) with vibrant-yellow skin decorations, and the bizarre soft-shell turtle, Pelochelys cantorii.
Also, pale-colored frogs, called Rhacophorus appendiculatus, were found in high-elevation forests in the crater of Mt. Cagua.
Most of the species are native to the island, and a full 38 percent of them can't be categorized taxonomically, the researchers wrote in the paper. That suggests at least some may be completely new species.
Protecting those species "remains an on-going effort, challenged by rapid development, large-scale extractive logging and mining industries and conversion of natural habitats into agricultural lands driven by a burgeoning human population," the researchers write in their paper.
In addition, some of the areas that have been least studied lie next to populated areas, so cataloging species diversity there should be a top priority, the researchers write.
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This story was originally written for LiveScience and was republished with permission here. Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved.
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Good article, but the title is misleading. Luzon is not a "remote island". It's the biggest island in the country, and has the biggest population centers, including Manila and its suburbs. The Sierra Madre mountain range runs from the northeast to the southeast of the island and parts of it are just a few kilometers from the capital, which only highlights the risks its biodiversity faces.