Category Archives: Rising Sea Levels

Baby Sharks and Climate Change – Offical WCFF Selection

“Introducing Physioshark|Baby Sharks and Climate Change” produced by Tom Vierus is an official selection to the 2018 WCFF.

SYNOPSIS:  Second only to fishing pressure, climate change threatens shark populations worldwide. Increasing ocean temperatures and decreasing pH and oxygen will impact all marine life, but sharks may be particularly vulnerable. They grow slowly, take a long time to mature, do not produce as many young as other fish species, and therefore may be unable to adapt fast enough to keep pace with climate change.

The physioshark project – primarily based on Moorea, French Polynesia – has been investigating how climate change stressors affect newborn sharks since 2014. Because all 4.7 million km2 of French Polynesian waters comprise a shark sanctuary — the largest in the world – shark fishing/exploitation is banned. This provides a rare opportunity to study resident shark populations without their number one stressor. But, even the best-managed marine sanctuaries are not immune to climate change.

The physioshark team has characterized and been closely monitoring environmental conditions at 11 potential shark nursery areas around the island and have been executing field and laboratory-based experiments on newborn blacktip reef and lemon sharks to understand how they respond to environmental conditions they currently face. This has allowed the team to also model sharks’ responses to conditions predicted with climate change to understand how habitat availability may change over time and the sharks’ capacity to adapt. Beyond the experiments, the team has been committed to communicating about shark biology and conservation with local communities, schools, and via social media.

This short film introduces the physioshark project and documents the team’s efforts toward shark conservation.

The WCFF informs, engage and inspires wildlife conservation through the power of film. Join us for our eight year anniversary in New York, NY, October 18-28, 2018. Ten days of film screenings, panel discussions, receptions, field trips, networking, Virtual Reality and more.

Contact: info@wcff.org to join the planning committee. Sponsor the film festival, advertise on the big screen during the outdoor summer series and the October festival. Take a page in the full color program book to be distributed in Africa, Australia, China, Europe, India, North and South America.

This blacktip shark is being released at the spot it was caught at about a month ago. It underwent a series of trials in a wet lab at a research station, where physiological responses to warming waters were investigated. The results will help understand the impacts of climate change induced changing environmental conditions and if – as the scientists suspect – the baby sharks will become less resilient in future.

Christopher J. Gervais, FRGS
Twitter: @CJGERVAIS
Christopher@WCFF.org

Wildlife Conservation Film Festival
October 18-28, 2018 | New York, NY
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First Mammal Made Extinct by Manmade Climate Change

YWQ4NzExMzNjNyMvbExMbWZqTEg5NUxOckZBUFdTaldMTDE1c1prPS8weDM6OTAweDQ0OC85MDB4NDQ2L2ZpbHRlcnM6cXVhbGl0eSg3MCkvaHR0cDovL3MzLmFtYXpvbmF3cy5jb20vcG9saWN5bWljLWltYWdlcy92d3JhZ2FsZ2psbndwcDRmY29zMGN5cDZwb2FlZ2d6dmRmdHRyN29ocSource: Queensland Government

Queensland, Australia environmental researchers reported that the Bramble Cay melomys, a rodent species found on a small island in the eastern Torres Strait, appears to have been completely eradicated from its only known habitat. Also called the mosaic-tailed rat, this tiny creature marks the first mammal that has disappeared due to human-caused climate change, though experts warn it will likely be the first of many: a 2015 report noted that ⅙ of the world’s species are in danger of climate change-based extinction.

This melomys was the only mammal species native to the Great Barrier Reef, and in 1845 European sailors first noticed the rats living in high density around Bramble Cay, a small coral cay on Queensland’s north coast. The island is a significant wildlife hotspot, and remains the most important breeding ground for green turtles and several seabirds within the Torres Strait.

In 1978 the melomys population was estimated at several hundred, though they were last seen in 2009, leading to an extensive 2014 search for the creature. Since then, a report led by Ian Gynther from Queensland’s Department of Environment and Heritage Protection, in partnership with the University of Queensland, has recommended the species be labelled extinct.

As part of their search, researchers laid 150 traps on the island over six nights, and thoroughly examined the vegetation they typically inhabit for signs of life. After no evidence that any Bramble Cay melomys’ remained, the report’s authors concluded that extensive flooding due to rising sea levels was the “root cause” of the extinction, killing many animals and destroying 97% of their habitat from 2004 to 2014. Around the Torres Strait, sea levels have risen at twice the global average between 1993 and 2014. “For low-lying islands like Bramble Cay, the destructive effects of extreme water levels resulting from severe meteorological events are compounded by the impacts from anthropogenic climate change-driven sea-level rise…Significantly, this probably represents the first recorded mammalian extinction due to anthropogenic climate change,” the authors noted.

The Queensland government website suggests that attempts to restore the population are futile. “Because the Bramble Cay melomys is now confirmed to have been lost from Bramble Cay, no recovery actions for this population can be implemented,” it says. However, the report’s authors hold out hope that there might be an undiscovered population of the creatures in Papua New Guinea. They posit that several melomys may have initially arrived at Bramble Cay by floating over on debris from the Fly River region of New Guinea. Thus, the authors recommend surveying Papua New Guinea to see if the rodents or their close relatives could be living there.

Ecologist John White of Australia’s Deakin University said this extinction marks the beginning of a long battle for wildlife conservationists: “I am of absolutely no doubt we will lose species due to the increasing pressures being exerted by climate change,” he said. “Species restricted to small, low lying islands, or those with very tight environmental requirements are likely to be the first to go…Certainly, extinction and climatic change has gone hand in hand throughout the history of the world,” he said. “So, if this is one of the first, it is more than likely not going to be the last.”

3d653a26-0746-4ed6-8347-abc2db35753e-1920-1080Source: CAMERON DEJONG/FLICKR/CC2.0

Wildlife Conservation Film Festival
Biodiversity & Wildlife Crime Conference
Christopher J. Gervais, F.R.G.S.
Founder & CEO
Christopher@WCFF.org
http://www.WCFF.org

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