Navigation Links
Forest fires help power the nitrogen cycle
Date:8/8/2010

MADISON, WI, August 9th, 2010 When fire burns down a forest, nitrate levels go up, and the effects are persistent, according to recent research from University of Montana scientists. They found that charcoal deposited during fire events has the potential to stimulate the conversion of ammonia to nitrates, an important step in the nitrogen cycle.

Led by Patrick Ball, the research team found that a type of bacteria that transforms ammonia into nitrates was found in greater abundance in recently burned sites, despite the fact that the "recent" fire was twelve years prior to the sampling period. In addition to the bacteria, the burned sites had greater rates of nitrification, meaning that nitrogen was being processed more quickly through the ecosystem than without a fire.

The study was reported in the July/August 2010 Journal of Environmental Quality, published by the American Society of Agronomy, the Crop Science Society of America, and the Soil Science Society of America.

Nitrogen is often a limiting nutrient in coniferous forests soils of the western United States, where this study was conducted. The research results reveal a link between fire, charcoal deposition, nitrification, and abundance of nitrifying organisms in coniferous forests of the inland Northwestern US.

Conducted on soils from sites that had been exposed twice or three times to fires in the last 94 years, the research team was able to demonstrate that charcoal can stimulate nitrate production well after the heat pulse and substrate pulse (and increased ammonium) has abated.

Additionally, an analysis of the bacterial community, though gene sequencing, revealed shifts in community structure based both on fire history and soil type. This suggests that these soils are possibly shifting toward supporting microbial groups typically found in more productive soils such as those in adjacent open mountain meadows.


'/>"/>

Contact: Sara Uttech
suttech@sciencesocieties.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

Page: 1

Related biology news :

1. Lichens function as indicators of nitrogen pollution in forests
2. Tropical rainforest and mountain species may be threatened by global warming
3. Forest peoples rights key to reducing emissions from deforestation
4. When it comes to forest soil, wildfires pack 1-2 punch
5. University of Leicester professor adds new perspective to rainforest debate
6. Wake Forest plays integral role in effort to revolutionize vehicle safety
7. Diversity of trees in Ecuadors Amazon rainforest defies simple explanation
8. Earthworm activity can alter forests carbon-carrying capabilities
9. Living fossil tree contains genetic imprints of rain forests under climate change
10. Dried mushrooms slow climate warming in Northern forests
11. Wildfires result in loss of forests reserved by Northwest Forest Plan
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/24/2017)... April 24, 2017 Janice Kephart ... with  Identity Strategy Partners, LLP (IdSP) , today ... without President Trump,s March 6, 2017 Executive ... , refugee vetting can be instilled with greater confidence, ... now, all refugee applications are suspended by until ...
(Date:4/13/2017)... According to a new market research report "Consumer IAM Market by ... Service, Authentication Type, Deployment Mode, Vertical, and Region - Global Forecast to ... USD 14.30 Billion in 2017 to USD 31.75 Billion by 2022, at ... ... MarketsandMarkets Logo ...
(Date:4/6/2017)... 6, 2017 Forecasts by Product ... Readers, by End-Use (Transportation & Logistics, Government & Public ... & Fossil Generation Facility, Nuclear Power), Industrial, Retail, Business ... Are you looking for a definitive report on ... ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... October 10, 2017 , ... ... conjugate (ADC) therapeutics, today confirmed licensing rights that give it exclusive global ... technology developed in collaboration with Children’s Hospital Los Angeles (CHLA). Additionally, ...
(Date:10/10/2017)... ... October 10, 2017 , ... Dr. Bob Harman, founder and CEO ... Diego Rotary Club. The event entitled “Stem Cells and Their Regenerative ... attendees. Dr. Harman, DVM, MPVM was joined by two human doctors: Peter B. ...
(Date:10/10/2017)... 2017 SomaGenics announced the receipt of a ... RealSeq®-SC (Single Cell), expected to be the first commercially ... microRNAs) from single cells using NGS methods. The NIH,s ... accelerate development of approaches to analyze the heterogeneity of ... techniques for measuring levels of mRNAs in individual cells ...
(Date:10/10/2017)... ... 2017 , ... The Pittcon Program Committee is pleased to ... who have made outstanding contributions to analytical chemistry and applied spectroscopy. Each award ... conference and exposition for laboratory science, which will be held February 26-March 1, ...
Breaking Biology Technology: