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Evidence and Implications of Frequent Fires in Ancient Shrub Tundra
Understanding feedbacks between terrestrial and atmospheric systems is vital for predicting the consequences of global change, particularly in the rapidly changing Arctic. Fire is a key process in this context, but the consequences of altered fire regimes in tundra ecosystems are rarely considered, largely because tundra fires occur infrequently on the modern landscape. We present paleoecological data that indicate frequent tundra fires in northcentral Alaska between 14,000 and 10,000 years ago. Charcoal and pollen from lake sediments reveal that ancient birchdominated shrub tundra burned as often as modern boreal forests in the region, every 144 years on average (+/- 90 s.d.; n = 44). Although paleoclimate interpretations and data from modern tundra fires suggest that increased burning was aided by low effective moisture, vegetation cover clearly played a critical role in facilitating the paleo-fires by creating an abundance of fine fuels. These records suggest that greater fire activity will likely accompany temperature-related increases in shrub-dominated tundra predicted for the 21st century and beyond. Increased tundra burning will have broad impacts on physical and biological systems as well as land-atmosphere interactions in the Arctic, including the potential to release stored organic carbon to the atmosphere.
Date:
March 6, 2008
Creator:
Higuera, P E; Brubaker, L B; Anderson, P M; Brown, T A; Kennedy, A T & Hu, F S
Object Type:
Article
System:
The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 40, No. 58, Ed. 1 Friday, March 6, 2009
Free weekly newspaper that includes business and classified advertising.
Date:
March 6, 2009
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 39, No. 56, Ed. 1 Thursday, March 6, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
March 6, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 38, No. 49, Ed. 1 Tuesday, March 6, 2007
Free weekly newspaper that includes business and classified advertising.
Date:
March 6, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 39, No. 57, Ed. 1 Thursday, March 6, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
March 6, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 38, No. 50, Ed. 1 Tuesday, March 6, 2007
Free weekly newspaper that includes business and classified advertising.
Date:
March 6, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 40, No. 60, Ed. 1 Friday, March 6, 2009
Free weekly newspaper that includes business and classified advertising.
Date:
March 6, 2009
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 78, No. 35, Ed. 1 Wednesday, March 6, 2002
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
March 6, 2002
Creator:
Chand, Daniel
Object Type:
Newspaper
System:
The Portal to Texas History
The Optimist (Abilene, Tex.), Vol. 97, No. 42, Ed. 1 Friday, March 6, 2009
Bi-weekly student newspaper from Abilene Christian University in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
March 6, 2009
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
[Email From Brian Moffitt to David Stallman, March 6, 2008]
Email chain between David Stallman and Brian Moffitt discussing Stallman's and Helen Snapp's trip to North Carolina for a WASP appearance.
Date:
March 6, 2008
Creator:
Moffitt, Brian & Stallman, David
Object Type:
Text
System:
The Portal to Texas History
[Email from David Stallman to Debbie Jennings, March 6, 2008]
Email from David Stallman to Debbie Jennings telling her where he got the footage from his film from.
Date:
March 6, 2008
Creator:
Stallman, David A.
Object Type:
Letter
System:
The Portal to Texas History
Cherokeean/Herald (Rusk, Tex.), Vol. 153, No. 2, Ed. 1 Wednesday, March 6, 2002
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
March 6, 2002
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
North Texas Daily (Denton, Tex.), Vol. 93, No. 27, Ed. 1 Friday, March 6, 2009
Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date:
March 6, 2009
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
North Texas Daily (Denton, Tex.), Vol. 91, No. 31, Ed. 1 Thursday, March 6, 2008
Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date:
March 6, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
North Texas Daily (Denton, Tex.), Vol. 91, No. 81, Ed. 1 Tuesday, March 6, 2007
Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date:
March 6, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Jewish Post (Fort Worth, Tex.), Vol. 62, No. 10, Ed. 1 Thursday, March 6, 2008
Weekly Jewish newspaper from Fort Worth, Texas that includes local, state and national news along with extensive advertising.
Date:
March 6, 2008
Creator:
Wisch, Rene
Object Type:
Newspaper
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Concurrent Resolution 29
Concurrent resolution introduced by the Texas Senate and House of Representatives granting the legislature permission to adjourn for more than three days during the period beginning on Wednesday, February 28, 2007, and ending on Monday, March 5, 2007.
Date:
March 6, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
Dallas Voice (Dallas, Tex.), Vol. 25, No. 42, Ed. 1 Friday, March 6, 2009
Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date:
March 6, 2009
Creator:
Nash, Tammye
Object Type:
Newspaper
System:
The UNT Digital Library
The Bastrop Advertiser (Bastrop, Tex.), Vol. 155, No. 3, Ed. 1 Thursday, March 6, 2008
Semi-weekly newspaper from Bastrop, Texas that includes local, state and national news along with advertising.
Date:
March 6, 2008
Creator:
McAuley, Davis
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 118, No. 10, Ed. 1 Thursday, March 6, 2008
Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date:
March 6, 2008
Creator:
Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Attorney General Opinion: GA-28
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Whether the Comptroller of Public Accounts may disclose certain information relating to state tax liens (RQ-0592-JC)
Date:
March 6, 2003
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: GA-29
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Meaning of “civil liability” in section 791.006(a) of the Government Code, which permits interlock cooperation contracts for fire department services (RQ-0593-JC)
Date:
March 6, 2003
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: GA-30
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Allocation of appraisal district’s expenses between its appraisal and collection functions (RQ-0598-JC)
Date:
March 6, 2003
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: GA-31
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Whether a school district employee who is also a city council member may participate in matters regarding the school district that come before the council (RQ-0600-JC)
Date:
March 6, 2003
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History