Tag Archives: group

Vaquitas Spotted! Critically Endangered Porpoises Persevere

… – often unnoticed – in the same Mexican waters frequented by commercial fishermen. Unfortunately, this makes them an exceptionally vulnerable species, impacted by human activity even more than most. According to the IUCN’s Species Survival Commission (SSC)Cetacean Specialist group (CSG), the vaquitas numbered anywhere between 600 and 800 in the 1990s. However, they had recently disappeared so completely that many experts thought them extinct. To continue reading this article, …

Iguana Relative Shows How Lizards Spread Worldwide

By Laura Geggel, Staff Writer | September 1, 2015 An 80-million-year-old lizard discovered in southern Brazil has provided a surprising clue about how these reptiles evolved, and where they once lived, according to a new study. Until now, researchers had found acrodontans only in the Old World, including Africa and Asia. (This is a type of lizard is called an iguanian that has teeth fused to the top of its jaws, a group that includes chameleons and bearded dragons.) But the newfound fossil, a …

A New Study Reports 99 Percent of Sea Bird Species Could Be Eating Plastic by 2050 – CityLab

… penguins, have plastic in their guts. According to co-author Denise Hardesty, who was also a member of the NCEAS working group, seabirds are excellent indicators of ecosystem health. “Finding such widespread estimates of plastic in seabirds is borne out by some of the fieldwork we’ve carried out where I’ve found nearly 200 pieces of plastic in a single seabird,” she said…. The plethora of plastic comes from bags, bottle caps, and plastic fibers from synthetic clothes that have washed …

The role of species competition in biodiversity

By Christopher Packham | July 7, 2015   (Phys.org)—Over long spans, biodiversity is a fluid and shifting balance of species and influences. Species diversification occurs in response to a host of complex factors, both biotic and abiotic, and understanding them is a major challenge of evolutionary biology. A group of researchers in Sweden, Switzerland and Brazil have collaborated on a study of North American canids to show that competition from multiple carnivore clades is responsible for …

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