Drought, heat kill Arizona 'sky islands'
March 28, 2007Arizona's "sky islands," mountainside oases that provide a cool lush retreat from the desert, are falling victim to higher temperatures and a long drought.
Debbie Fagan told The New York Times that she settled in Summerhaven near Tucson 25 years ago after a country-wide search for the perfect place.
"Nature is confused," Fagan said. "We used to have four seasons. Now we have two. I love this place dearly, and this is very hard for me to watch."
In 2003 and 2004, wildfires devastated thousands of acres. The trees were first weakened by high temperatures, and then hit by insects with fire finishing the job.
Scientists say that the devastation of the "sky islands" suggests that the combination of record warmth and drought is not just a normal climate swing.
"A lot of people think climate change and the ecological repercussions are 50 years away," said Thomas Swetnam, head of the Laboratory of Tree-Ring Research at the University of Arizona in Tucson. "But it's happening now in the West. The data is telling us that we are in the middle of one of the first big indicators of climate change impacts in the continental United States."
Copyright 2007 by United Press International
-
More than a sign of sleepiness, yawning may cool the brain
Sep 19, 2011 |
3.4 / 5 (8) |
8
-
Where have all the flowers gone?
Jun 16, 2011 |
4 / 5 (1) |
3
-
Developing strategies in a desert watershed that sustain regional water supplies
Mar 22, 2011 |
4 / 5 (1) |
0
-
Size matters in lizard research
Mar 08, 2011 |
4 / 5 (2) |
0
-
Winds of change strike Mars, too
Feb 03, 2011 |
4.4 / 5 (14) |
7
-
Engineers build first sub-10-nm carbon nanotube transistor
Feb 01, 2012 |
4.9 / 5 (31) |
30
-
Something old, something new: Evolution and the structural divergence of duplicate genes
Jan 31, 2012 |
4.6 / 5 (7) |
1
-
The hidden nanoworld of ice crystals: Revealing the dynamic behavior of quasi-liquid layers
Jan 30, 2012 |
5 / 5 (3) |
1
-
Stock market network reveals investor clustering
Jan 27, 2012 |
3.9 / 5 (23) |
8
-
Of microchemistry and molecules: Electronic microfluidic device synthesizes biocompatible probes
Jan 26, 2012 |
5 / 5 (1) |
0
-
Do some geologists actually act a lot like Randy Marsh?
14 hours ago
-
Discrepancy between oxygen and carbon-dioxide levels
Feb 09, 2012
-
where gems are found in the world
Feb 09, 2012
-
Wind Waves in Reservoir ~ Wind run-up and Wind set-up
Feb 08, 2012
-
Balance of oxygen in the atmosphere
Feb 01, 2012
-
The case for a methanol-based economy
Jan 30, 2012
- More from Physics Forums - Earth
More news stories
Europe stakes billion-dollar bet on new rocket
A pencil-slim rocket is scheduled to lift into space from South America on Monday, carrying a billion-dollar bet that Europe can grab a juicy slice of the market to place satellites in low orbit.
Space & Earth / Space Exploration
12 hours ago |
3.5 / 5 (2) |
0
Political leaders play key role in how worried Americans are by climate change: study
More than extreme weather events and the work of scientists, it is national political leaders who influence how much Americans worry about the threat of climate change, new research finds.
Feb 06, 2012 |
5 / 5 (6) |
72
NASA budget will axe Mars deal with Europe: scientists
US President Barack Obama's budget proposal to be submitted next week for 2013 will cut NASA's budget by 20 percent and eliminate a major partnership with Europe on Mars exploration, scientists said Thursday.
Space & Earth / Space Exploration
Feb 10, 2012 |
5 / 5 (3) |
47
Humans may have helped the decline of African rainforests 3000 years ago
(PhysOrg.com) -- Large areas of rainforests in Central Africa mysteriously disappeared over three thousand years ago, to be replaced by savannas. The prevailing theory has been that the cause was a change ...
Feb 10, 2012 |
4.1 / 5 (14) |
18
|
Could Venus be shifting gear?
(PhysOrg.com) -- ESA’s Venus Express spacecraft has discovered that our cloud-covered neighbour spins a little slower than previously measured. Peering through the dense atmosphere in the infrared, the ...
Space & Earth / Space Exploration
Feb 10, 2012 |
5 / 5 (8) |
10
|
Walney offshore wind farm is world's biggest (for now)
(PhysOrg.com) -- The Walney wind farm on the Irish Sea--characterized by high tides, waves and windy weather--officially opened this week. The farm is treated in the press as a very big deal as the Walney ...
GPS court ruling leaves US phone tracking unclear
A US Supreme Court decision requiring a warrant to place a GPS device on the car of a criminal suspect leaves unresolved the bigger issue of police tracking using mobile phones, legal experts say.
Europeans protest controversial Internet pact
Tens of thousands of people marched in protests in more than a dozen European cities Saturday against a controversial anti-online piracy pact that critics say could curtail Internet freedom.
Study finds that anti-diabetic medication can prevent the long-term effects of maternal obesity
In a study to be presented today at the Society for Maternal-Fetal Medicine's annual meeting, The Pregnancy Meeting, in Dallas, Texas, researchers will report findings that show that short therapy with the anti-diabetic medication ...
Netflix settlement trims 14 pct off 4Q earnings
(AP) -- Netflix pressed the rewind button on its fourth-quarter earnings after settling allegations that the video subscription service violated a consumer-privacy law.
Steroid injections prove effective in treatment of lumbar disc herniations
The use of epidural steroid injections may be a more efficient treatment option for lumbar disc herniations, according to research presented today at the American Orthopaedic Society for Sports Medicine's Specialty Day in ...
