HOME >> BIOLOGY >> NEWS
Bison Grazing Increases Biodiversity In Grasslands

Grazing by herbivorous mammals like bison increases biodiversity in North American grasslands, says National Science Foundation (NSF) ecologist Scott Collins, even during periods of frequent burning and other stresses. In fact, loss of species diversity in these grasslands due to frequent burning was reversed by bison grazing, according to Collins.

"Thus, reestablishing grazing in grasslands stressed by human activities enhances biodiversity," says the scientist. Collins' research results are published in this week's issue of the journal Science. His work was conducted at NSF's Konza Prairie Long-Term Ecological Research (LTER) site in northeastern Kansas, one of a network of 20 such NSF sites in North America and Antarctica.

Species diversity has declined in ecosystems worldwide due to habitat fragmentation, eutrophication, and land-use changes, scientists believe.

Collins and his colleagues conducted two long-term field experiments in native grasslands to assess effects of fire, addition of nitrogen, and grazing on plant species diversity. In one experiment, species richness declined on burned and fertilized areas, whereas grazing maintained diversity under these conditions. In a second experiment, loss of species diversity due to frequent burning was reversed by bison, animals that Collins calls keystone herbivores in North American grasslands.

In North American tallgrass prairies, diversity and productivity are controlled to a large extent by nitrogen availability, Collins explains. Historically, nitrogen availability in prairies was driven by interactions between frequency of fires and grazing by large herbivores. In general, spring fires enhance growth of certain grasses, and herbivores such as bison preferentially graze these grasses, keeping a system of checks and balances working properly, and allowing many plant species to flourish.

"Extirpation of native grazers, habitat fragmentation, increased
'"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-306-1070
National Science Foundation
30-Apr-1998


Page: 1 2

Related biology news :

1. Solution To Bison-Cattle Conflict In Yellowstone
2. LSU Ag Center Brucellosis Specialist May Help Stem Bison Controversy
3. Colorado State University Study Reveals Climate Change, Longer Growing Seasons Could Harm Grazing On Western Shortgrass Steppe
4. Mowing, Grazing Of Tall-Grass Prairie Increases
5. Study Suggests Vaccine Increases Survival In Ovarian And Breast Cancer Patients Following High-Dose Chemotherapy And Autologous Stem Cell Transplant
6. Stress Increases Blood Chemical Related To Heart Disease
7. Severe Falciparum Malaria Increases In Honduras
8. Lower Temperature Increases Virus Production
9. Survey Shows Students Turning To Physicians Less As Drug Abuse Increases
10. Intake Of Acetaminophen Increases Risk Of Excessive Anticoagulation In Patients Taking Warfarin
11. Iron Deficiency Increases Likelihood Of Bone Fractures

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Bison Grazing Increases Biodiversity Grasslands

(Date:11/21/2014)... According to a new market ... RFID, Access Control, Intrusion Detection, Parking Management, Under Vehicle ... Service Geography - Global Forecasts to 2020", published by ... be around $25 Billion in 2014 and is expected ... CAGR of 8.69%. Browse 116 market data ...
(Date:11/21/2014)... Calif. , Nov. 20, 2014 Strict ... driver efficiency are piloting the North American and European ... of accidents growing, gesture recognition systems that are intuitive ... a mark in the industry. New ... Automotive Gesture Recognition Market in Europe ...
(Date:11/21/2014)... , Nov. 20, 2014   Atmel® Corporation ... in microcontroller (MCU) and touch technology solutions, today launched ... sensors with the widest V cc range ... temperature accuracy and faster I 2 C bus communication ... serial EEPROM memory making them ideal for consumer, industrial, ...
Breaking Biology News(10 mins):Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4
(Date:12/19/2014)... December 19, 2014 Bioject Medical ... and manufacturer of needle-free injection technology, today announced ... Immunomic Therapeutics, Inc. (“ITI”) for ITI to use ... its LAMP™ vaccine platform. , In the ... Worldwide license to the Biojector®-2000 that triggers based ...
(Date:12/19/2014)... BioPlus Specialty Pharmacy (BioPlus), one of the ... Maroulis, Pharm.D. to the newly created position of Vice ... position, Dr. Maroulis will continue to manage the entire ... multi-site pharmacies as the company expands. Dr. Maroulis has ... he has served in many different capacities in the ...
(Date:12/19/2014)... -- Roche (SIX: RO, ROG; OTCQX: RHHBY) announced today ... privately held company based in Redwood ... big data platform for centralized management and processing ... on-market Genomic Management Solution, Bina-GMS 1 , empowers ... and scalable analyses to maximize the value of ...
(Date:12/19/2014)... , Dec. 19, 2014 Decision Resources ... will grow at a 12 percent compound annual growth ... of the aging population and the increasing adoption of ... America will also spur demand for dental ... dental implant and periodontal treatments. Other key ...
Breaking Biology Technology:Bioject and Immunomic Therapeutics Enter into an Agreement for License of Needle-Free Technology for LAMP-vax Vaccines 2Bioject and Immunomic Therapeutics Enter into an Agreement for License of Needle-Free Technology for LAMP-vax Vaccines 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Roche acquires Bina Technologies and enters the genomic informatics market 2Roche acquires Bina Technologies and enters the genomic informatics market 3Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 3
Cached News: