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A tenth of the world's wilderness lost since the 1990s, study finds

A tenth of the world's wilderness lost since the 1990s, study finds | DSC Library | Scoop.it

Researchers reporting in the journal Current Biology show catastrophic declines in wilderness areas around the world over the last 20 years. They demonstrate alarming losses comprising a tenth of global wilderness since the 1990s - an area twice the size of Alaska and half the size of the Amazon. The Amazon and Central Africa have been hardest hit.

 

The findings underscore an immediate need for international policies to recognize the value of wilderness areas and to address the unprecedented threats they face, the researchers say.

 

"Globally important wilderness areas—despite being strongholds for endangered biodiversity, for buffering and regulating local climates, and for supporting many of the world's most politically and economically marginalized communities—are completely ignored in environmental policy," says Dr James Watson of the University of Queensland in Australia and the Wildlife Conservation Society in New York. "Without any policies to protect these areas, they are falling victim to widespread development. We probably have one to two decades to turn this around. International policy mechanisms must recognize the actions needed to maintain wilderness areas before it is too late. We probably have one to two decades to turn this around."

 

Watson says much policy attention has been paid to the loss of species, but comparatively little was known about larger-scale losses of entire ecosystems, especially wilderness areas which tend to be relatively understudied. To fill that gap, the researchers mapped wilderness areas around the globe, with "wilderness" being defined as biologically and ecologically intact landscapes free of any significant human disturbance. The researchers then compared their current map of wilderness to one produced by the same methods in the early 1990s.

 

This comparison showed that a total of 30.1 million km2 (around 20 percent of the world's land area) now remains as wilderness, with the majority being located in North America, North Asia, North Africa, and the Australian continent.

 

However, comparisons between the two maps show that an estimated 3.3 million km2 (almost 10 percent) of wilderness area has been lost in the intervening years. Those losses have occurred primarily in South America, which has experienced a 30 percent decline in wilderness, and Africa, which has experienced a 14 percent loss.

 


Via Dr. Stefan Gruenwald
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Classroom Antarctica

Classroom Antarctica | DSC Library | Scoop.it
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lyn chatfield's insight:

This 'Continent' unit will enable students to appreciate the uniqueness of Antarctica, while developing skills in critical analysis, working scientifically, literacy, language and arts skills. 

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The_refugee_journey.pdf?sssdmh=dm16.638113

lyn chatfield's insight:

A work sheet which includes a refugee's description of why he has to leave his country and his journey to his host country.

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How social class affects health

How social class affects health | DSC Library | Scoop.it
The Conversation is running a series, Class in Australia, to identify, illuminate and debate its many manifestations. Here, Sharon Friel considers the points where class and health interact. The unequal…
lyn chatfield's insight:

Discusses how unequal distribution of power, money and resources creates health inequalities. and how this  disadvantage is passed on through generations. In addition a number of links  provide conversations on how these factors affect such things as education,cultural leadership, accessibility to music, stereotyping and domestic violence.

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The Impact of Tourism in Bali | eHow

The Impact of Tourism in Bali | eHow | DSC Library | Scoop.it
Bali, Indonesia is one of the world's most beautiful and exotic locations enjoyed by many tourists worldwide.
lyn chatfield's insight:

Brief summary of the impact of tourism.

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Worldlywise Wiki / How physical processes have created coastal landforms

Worldlywise Wiki / How physical processes have created coastal landforms | DSC Library | Scoop.it

Via Marie O'Brien
lyn chatfield's insight:

A number of lessons on coastlines.

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Mangroves could survive sea-level rise if protected ("against humans?!?") | University of ...

Mangroves could survive sea-level rise if protected ("against humans?!?") | University of ... | DSC Library | Scoop.it
Human activity is currently a bigger threat to mangroves, and the natural defences they provide against storm surges and other coastal disasters, than rising sea levels, according to a new study. Although we can expect some ...

The survey warns that human activity on land – such as the damming up of rivers or the felling of trees to create shrimp ponds – is currently a far greater threat to many mangrove habitats than the effects of climate change on sea level.

Mangroves – trees and shrubs which grow in saltwater, coastal environments – play a critical role in protecting thousands of shoreline communities in tropical and subtropical regions from floods, storms, and other hazards.

Their densely-packed, overground root systems can absorb wave energy and reduce the velocity of a sudden surge of water. In the 2004 tsunami, for example, mangroves were sometimes the difference between life and death for people whose homes lay in the path of the giant waves which crashed into shorelines around South Asia.


Via Bert Guevara
lyn chatfield's insight:

 The critical role of mangroves and the threats to their existance.

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Rescooped by lyn chatfield from Climate Change Adaptation in Southeast Asia
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Drama Amid Indonesia's Disappearing Mangroves : NPR

Drama Amid Indonesia's Disappearing Mangroves : NPR | DSC Library | Scoop.it
Indonesia has the largest share of the world's mangroves — coastal forests that have adapted to saltwater environments. They play important environmental and ecological roles.

Via SEARCA KC3
lyn chatfield's insight:

The effects of disappearing mangroves and management options.

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Water Conservation, Waste Management, And Reduction of Plastics Strategies Are Needed to Protect Coastal Habitat & Marine Environments

Water Conservation, Waste Management, And Reduction of Plastics Strategies Are Needed to Protect Coastal Habitat & Marine Environments | DSC Library | Scoop.it
In the tourism industry realize that addressing these issues is vital to sustainable tourism and protecting the natural resource values that allow the tourism business to succeed.

Via Gaye Rosier
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Emphasis is on USA but concepts can be applied elsewhere.

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Kate Hart: Citing Sources: A Quick and Graphic Guide

Kate Hart: Citing Sources: A Quick and Graphic Guide | DSC Library | Scoop.it
how to avoid plagiarism: an infographic for bloggers and harry potter fans.
lyn chatfield's insight:

A simple summary easily understood by students.

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Oceans - Resources - TES Australia

Oceans - Resources - TES Australia | DSC Library | Scoop.it
A range of powerpoint lessons on Oceans - their environments, animals, adaptations and threats and pollution.
lyn chatfield's insight:

Some quite  useful lessons to get to know the oceans of the world, their structure and their problems. Click on the resource and create an account if you don't already have one.

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Coastal-eBook.pdf

lyn chatfield's insight:

An ebook on Australian coastal management. An excellent source of information for teachers.

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Rescooped by lyn chatfield from Geography Education
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Typhoon Haiyan Before & After

Typhoon Haiyan Before & After | DSC Library | Scoop.it
View interactive before and after images showing the devastation Typhoon Haiyan has caused in Tacloban City, Philippines.

Via Seth Dixon
lyn chatfield's insight:

A wonderful tool to introduce or use on the topic of typhoons and/or disasters. 

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Tracy Galvin's curator insight, May 3, 2014 7:01 PM

A great set of photos to show the great destructive force of a storm on coastlines. The Philippines are a bunch of small islands made up of primarily coastlines so this typhoon destroyed huge amounts of the country.

Nicole Kearsch's curator insight, December 8, 2014 1:16 PM

We know that natural disasters cause a lot of damage and personal loss but we don't really ever know how much damage is caused until we see it.  Even when we do see it if we don't know what it looked like before it really doesn't mean anything to us.  Using these before and after maps you can really understand how much destruction happened when the typhoon hit the Philippines.  You can see the loss of property, infrastructure and natural resources that were once there.  The loss of not only peoples homes, but entire neighborhoods wiped right off the map.  The remnants of roads can be seen but that is all they are, remnants.  The ability to see the before as well as the after really strikes a toll and makes people realize that this is serious and not just another storm for the people that live here.

Chris Costa's curator insight, November 9, 2015 2:51 PM

Such powerful imagery. I was tinkering around with the pictures and moving the scroller from right to left, keeping my eye on a particular house that stood before the typhoon. To keep scrolling to the left and to watch that image of the house completely disappear was absolutely surreal. It made the news of the devastation wrought by the storm seem so much more real; here I was, sitting in class and watching a home- a place where a family once lived, where lives had been and were continuing to be forged- completely disappear from the face of the map, never to return. I have lived in the same home for 15 years, and I could never imagine watching my home disappear in such a manner. The psychological impact of this devastation on such a massive scale is unimaginable, something that must be endured in order to truly understand- and, unfortunately for the people living in these areas, they now understand it all too well. The financial recovery from this storm will eventually come- perhaps not as fast as hoped, but it will, as always- but the recovery in human costs will take much longer. For those affected, many will believe that there can never be a recovery. Watching that home disappear in the blink of an eye makes me feel that they are probably right.

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Habitats - Sand Dunes

Habitats - Sand Dunes | DSC Library | Scoop.it
Information about different coastal and marine environments. Environments covered include rocky reefs, open beaches and kelp forests.

Via Catherine Shaw
lyn chatfield's insight:

A rather detailed discussion on sand dunes,their vegetation and management as well other coastal topics

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Bali must reduce negative impact of tourism

Bali must reduce negative impact of tourism | DSC Library | Scoop.it

The provincial administration, together with the entire tourist industry, is required to minimize the negative effects caused by tourism activities.

The tourism sector had both positive and negative impacts on the island’s economy, on the people and on the environment, said Ida Bagus Subhiksu, head of Bali Tourism Agency, in a discussion in Denpasar last weekend.

lyn chatfield's insight:

A newspaper report on the negative effects of tourism on Bali

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Sustainable Tourism Includes Protecting Coastal Habitat and Cultural Heritage

Protecting coastal habitat, marine environments and cultural heritage is a key strategy for sustainable tourism.

Sea life depends on the beaches, estuaries, marshes, sea grass, and wetlands for their survival.  Tourism depends on clean and healthy beaches for its economy.


Via Paul Sloan
lyn chatfield's insight:

The emphasis is on USA but can be applied to other areas. Has highlighted areas that provide additional information, including video clips.

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Rescooped by lyn chatfield from All about water, the oceans, environmental issues
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Plastic Pollution | Coastal Care

Plastic Pollution | Coastal Care | DSC Library | Scoop.it
The world population is conglomerating along the coasts, standing on the front row of the greatest, most unprecedented, plastic pollution waste tide ever faced.

Via Kathy Dowsett
lyn chatfield's insight:

Some fantastic photos of coastal pollution. An excellent discussion for teachers but maybe too detailed and complex for younger students

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