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Queen’s Biologists Awarded for Climate Change Impact Research on the NWT's Mackenzie Delta

Queen’s Biologists Awarded for Climate Change Impact Research on the NWT's Mackenzie Delta | Daniel.V Volcanoes and Coast lines. | Scoop.it

Queen’s University researchers have received the prestigious Henry Cowles Award for their paper revealing new evidence of the destructive impact of global climate change on North America’s largest Arctic delta.“All of us are really excited that we were recognized with this award,” says graduate student Joshua Thienpont (PhD ’13), who is also the team’s co-leader. “There have been many excellent papers recognized by the Cowles Award.”

The group focused on the Mackenzie Delta region in the Northwest Territories, an area hit by a widespread and ecologically destructive storm surge in 1999. The research into the impact of this salt-water surge is significant because one of the most ominous threats of global warming today is from rising sea levels, causing marine waters to inundate the land. The threat is especially acute in polar regions, where shrinking sea ice increases the risk of storm surges.

The prize is awarded annually for excellence in publication, either as a book or journal article, by the Biogeography Specialty Group of the Association of American Geographers.

[...]

Read their paper in the journal Proceedings of the National Academy of Sciences.

http://www.pnas.org/content/108/22/8960.full

Abstract

One of the most ominous predictions related to recent climatic warming is that low-lying coastal environments will be inundated by higher sea levels. The threat is especially acute in polar regions because reductions in extent and duration of sea ice cover increase the risk of storm surge occurrence. The Mackenzie Delta of northwest Canada is an ecologically significant ecosystem adapted to freshwater flooding during spring breakup. Marine storm surges during the open-water season, which move saltwater into the delta, can have major impacts on terrestrial and aquatic systems. We examined growth rings of alder shrubs (Alnus viridis subsp. fruticosa) and diatoms preserved in dated lake sediment cores to show that a recent marine storm surge in 1999 caused widespread ecological changes across a broad extent of the outer Mackenzie Delta. For example, diatom assemblages record a striking shift from freshwater to brackish species following the inundation event. What is of particular significance is that the magnitude of this recent ecological impact is unmatched over the > 1,000-year history of this lake ecosystem. We infer that no biological recovery has occurred in this lake, while large areas of terrestrial vegetation remain dramatically altered over a decade later, suggesting that these systems may be on a new ecological trajectory. As climate continues to warm and sea ice declines, similar changes will likely be repeated in other coastal areas of the circumpolar Arctic. Given the magnitude of ecological changes recorded in this study, such impacts may prove to be long lasting or possibly irreversible.

[...]


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Climate change impacts to US coasts threaten public health, safety and economy | Terra Daily

Climate change impacts to US coasts threaten public health, safety and economy | Terra Daily | Daniel.V Volcanoes and Coast lines. | Scoop.it

According to a new technical report, the effects of climate change will continue to threaten the health and vitality of U.S. coastal communities' social, economic and natural systems. The report, Coastal Impacts, Adaptation, and Vulnerabilities: a technical input to the 2013 National Climate Assessment, authored by leading scientists and experts, emphasizes the need for increased coordination and planning to ensure U.S. coastal communities are resilient against the effects of climate change.

 

The recently-released report examines and describes climate change impacts on coastal ecosystems and human economies and communities, as well as the kinds of scientific data, planning tools and resources that coastal communities and resource managers need to help them adapt to these changes.

 

"Sandy showed us that coastal states and communities need effective strategies, tools and resources to conserve, protect, and restore coastal habitats and economies at risk from current environmental stresses and a changing climate," said Margaret A. Davidson of NOAA's Office of Ocean and Coastal Resource Management and co-lead author of the report. "Easing the existing pressures on coastal environments to improve their resiliency is an essential method of coping with the adverse effects of climate change."

 

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Via Chuck Sherwood, Senior Associate, TeleDimensions, Inc
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Armageddon Outta Here: Fireballs that lit up Florida sky were likely a sporadic meteor (VIDEO)

Armageddon Outta Here: Fireballs that lit up Florida sky were likely a sporadic meteor (VIDEO) | Daniel.V Volcanoes and Coast lines. | Scoop.it

South Floridians who happened to be looking in the right place at the right time Sunday night saw one spectacular light show – possibly a sporadic meteor.

 

The Coast Guard began getting flooded with phone calls about 7:30 p.m., with reports of folks seeing flare-like objects from Jacksonville to Key West, according to Coast Guard Petty Officer 3rd Class Sabrina Laberdesque.

 People called in, describing the flares “as orange or red fireballs in the sky,” Laberdesque said. The display was limited to the sky: No injuries were reported, Laberdesque said. 

A sporadic meteor is basically a rocky object that comes from the asteroid belt, said Mike Hankey, operations manager for the American Meteor Society, based in Genesee, N.Y. The group logged 27 reports within about the first two hours of the event, he said.

 

Gauging by the reports, it happened somewhere over the ocean.

 

"These fireballs are common," Hankey said. "It’s rare for any one person to see one more than once or twice in their lifetime. But on any given night, it might happen somewhere in the globe a few times in a day..."

 (click pic to watch video)


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Rescooped by Daniel Veneziano from Littlebytesnews Current Events
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A Huge Meteor Exploded Over Russia On Friday Morning

A Huge Meteor Exploded Over Russia On Friday Morning | Daniel.V Volcanoes and Coast lines. | Scoop.it
Several videos and reports are showing that a huge meteor just exploded over Eastern Russia, near Urals, early on Friday local time.

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littlebytesnews's curator insight, February 15, 2013 3:06 AM

Without reading....I wonder if anyone was harmed??

Rescooped by Daniel Veneziano from Everything is related to everything else
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Four Erupting Volcanoes on the Kamchatka Peninsula : Natural Hazards

Four Erupting Volcanoes on the Kamchatka Peninsula : Natural Hazards | Daniel.V Volcanoes and Coast lines. | Scoop.it
NASA’s Terra satellite captured four volcanoes erupting simultaneously, only 180 kilometers (110 miles) apart.

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World Environment News - Obama ocean plan aims to protect economy, environment - Planet Ark

World Environment News - Obama ocean plan aims to protect economy, environment - Planet Ark | Daniel.V Volcanoes and Coast lines. | Scoop.it
The White House released a plan on Tuesday aimed at protecting oceans, coastal and Great Lakes environments around the United States while safeguarding related businesses that support more than 44 million jobs.

Via Gaye Rosier
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Climate change impacts to US coasts threaten public health, safety and economy | Terra Daily

Climate change impacts to US coasts threaten public health, safety and economy | Terra Daily | Daniel.V Volcanoes and Coast lines. | Scoop.it

According to a new technical report, the effects of climate change will continue to threaten the health and vitality of U.S. coastal communities' social, economic and natural systems. The report, Coastal Impacts, Adaptation, and Vulnerabilities: a technical input to the 2013 National Climate Assessment, authored by leading scientists and experts, emphasizes the need for increased coordination and planning to ensure U.S. coastal communities are resilient against the effects of climate change.

 

The recently-released report examines and describes climate change impacts on coastal ecosystems and human economies and communities, as well as the kinds of scientific data, planning tools and resources that coastal communities and resource managers need to help them adapt to these changes.

 

"Sandy showed us that coastal states and communities need effective strategies, tools and resources to conserve, protect, and restore coastal habitats and economies at risk from current environmental stresses and a changing climate," said Margaret A. Davidson of NOAA's Office of Ocean and Coastal Resource Management and co-lead author of the report. "Easing the existing pressures on coastal environments to improve their resiliency is an essential method of coping with the adverse effects of climate change."

 

Click headline to read more--


Via Chuck Sherwood, Senior Associate, TeleDimensions, Inc
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Rescooped by Daniel Veneziano from Littlebytesnews Current Events
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BY THE NUMBERS: The Destructive Power Of The Russian Meteor

BY THE NUMBERS: The Destructive Power Of The Russian Meteor | Daniel.V Volcanoes and Coast lines. | Scoop.it
NASA said the meteor that exploded over Russia Friday was the largest reported fireball since the Tunguska event in 1908.

Via littlebytesnews
Daniel Veneziano's insight:

this meteor that hit russia is said to be the size of a bus which injured 1000 people and has a blast equivilent to 200 atomic bombs. it hit the earths atmosphere with the force of 300 kilotons or 25 times worse than the hiroshima atomic bomb. 

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littlebytesnews's curator insight, February 17, 2013 6:10 PM

The sky is falling down or the world is crumbling??

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VIDEO: Four volcanoes erupted simultaneously in Kamchatka ...

VIDEO: Four volcanoes erupted simultaneously in Kamchatka ... | Daniel.V Volcanoes and Coast lines. | Scoop.it
Unique natural display on the Kamchatka Peninsula in Russia where four volcanoes separated by only 180km are erupting simultaneously these days. A filming crew captured a 360 degrees video featuring the volcanic ...

Via Dr. Catherine Russell
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