Navigation Links
Innovative model connects circuit theory to wildlife corridors
Date:12/20/2007

(Flagstaff, Ariz.) Scientists at Northern Arizona University and the National Center for Ecological Analysis and Synthesis have developed a model that uses circuit theory to predict gene flow across landscapes. Their approach could give managers a better way to identify the best spots for wildlife corridors, which are crucial to protecting biodiversity.

There are a lot of similarities between circuit theory and ecological connectivity, said Brad McRae, head of the project. Its a powerful tool.

A 2005 doctoral graduate from the NAU School of Forestry, McRae, now a scientist at the National Center for Ecological Analysis and Synthesis in Santa Barbara, Calif., with his adviser Paul Beier of NAU School of Forestry, published this innovation in the Dec. 11 issue of Proceedings of the National Academy of Sciences of the USA.

McRae first hit on the idea while working with Beier on a study of genetic relationships of cougars across the southwest United States. We had good maps of habitat and good maps of genetic data, he said, and no way to see how one might affect the other. Using experience from his previous career as an electrical engineer, he reasoned that gene flow across a complex landscape should follow the same rules as electrical conductance in a complex circuit board.

The result was what McRae calls the Isolation by Resistance model. The model represents patches of habitat as nodes in an electrical circuit and the genes of animals and plants as the current that flows between the nodes. Flow occurs across multiple pathways, encountering more resistance in some areaspoor habitats or human-made barriersand flowing preferentially through better habitats.

I predict Brads model will become the standard way of modeling gene flow, and in a few years it will be seen as so intuitively appropriate that scientists will wonder why no one had seen the analogy before, Beier said. As a conservation biologist, I am most excited about th
'/>"/>

Contact: Thomas Bauer
Thomas.Bauer@nau.edu
928-523-6126
Northern Arizona University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Innovative civil engineering application promises cleaner waters
2. M2SYS Partners With Gnosis Medical Services to Provide Accurate Patient Identification in Developing Countries Through Innovative Biometrics Solution
3. NIST announces 56 new awards for innovative technology research and development
4. BIO-key International Showcasing Innovative Public Safety Solutions at 2007 IACP Conference
5. Einstein researchers receive grants totaling $700,000 for innovative breast cancer research
6. Raydiance collaborates with Rutgers, MTF to develop innovative tissue processing approaches
7. JDRF awards University of Copenhagen professor with grant to conduct innovative diabetes research
8. Novel 3-D cell culture model shows selective tumor uptake of nanoparticles
9. A new kind of rat model
10. JILA finds flaw in model describing DNA elasticity
11. Smithsonian researchers develop models to assess wetland health
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... two different ways that allow unprecedented experimental insights ... of oxygen molecules in photosynthesis. The two studies ... Nature Communications . , "The new knowledge will ... oxidation, which are key components for building artificial ... energy in fuels like hydrogen, ethanol or methanol," ...
(Date:7/11/2014)... marginal division of the striatum is also involved ... degree of substance P in the striatal marginal ... and his team, College of Biophotonics, South China ... substance P receptor, neurokinin 1 was highly expressed ... normal rats. Unilateral or bilateral injection of an ...
(Date:7/11/2014)... Using spider toxins to study the proteins that let ... say they have stumbled upon a biological tactic that ... insect plagues in a safe and environmentally responsible way. ... be lethal for one species and harmless for a ... target specific pests without harming beneficial species like bees. ...
Breaking Biology News(10 mins):Molecular snapshots of oxygen formation in photosynthesis 2Potent spider toxin 'electrocutes' German, not American, cockroaches 2Potent spider toxin 'electrocutes' German, not American, cockroaches 3
... understanding of the process cells use to ensure that ... of each chromosome ?a process that must be exquisitely ... retardation. The new work reveals how gluelike protein complexes ... meiosis ?the specialized cell division process that produces sperm ...
... first birthday, according to new infant mortality statistics for ... (NCHS). , The infant mortality rates showed no significant ... first time since 1958. , In 2003, the ... live births, which was statistically unchanged from the 2002 ...
... Nerve signals relayed directly to the pancreas after eating ... sugar control, according to a report in the June ... sensitivity to such signals might offer a new approach ... which the pancreas cells that produce insulin, or beta ...
Cached Biology News:What controls stickiness of 'smart' chromosomal glue 2What controls stickiness of 'smart' chromosomal glue 3What controls stickiness of 'smart' chromosomal glue 4US infant mortality rate fails to improve 2Increased sensitivity to nerve signals keeps diabetes at bay 2
(Date:7/12/2014)... (PRWEB) July 12, 2014 ... various reagents used in the life science ... the life science reagents market towards remarkable ... manufacturers and providers of life science reagents. ... Report: http://www.transparencymarketresearch.com/life-sciences-reagents-analytical-reagents.html . , The global ...
(Date:7/11/2014)... 11, 2014 , Not for release, ... or from any jurisdiction where to do so would constitute ... Shire plc ("Shire" or the "Company") (LSE: SHP, NASDAQ: ...  Shire confirms it has held a meeting with representatives of ... without the prior agreement or approval of AbbVie. ...
(Date:7/11/2014)... (PRWEB) July 11, 2014 BCC Research ... DIGITAL POLYMERASE CHAIN REACTION (PCR) TECHNOLOGY: GLOBAL MARKETS ... (PCR) technology reached nearly $140 billion in 2013. This ... registering a five-year compound annual growth rate (CAGR) of ... number of interesting and exciting possibilities within the broader ...
(Date:7/11/2014)... 2014 /CNW/ - Sunovion Pharmaceuticals Canada Inc. (Sunovion) today ... acetate) for use as a once-daily adjunctive therapy for ... who are not satisfactorily controlled with conventional therapy.  APTIOM ... under 18 years of age. Epilepsy ... according to Epilepsy Canada, it affects 0.6% of the ...
Breaking Biology Technology:Transparency Market Research: Life Science Reagents Market- PCR Reagent Kits, Cell and Tissue Culture, Flow Cytometry, Electrophoresis and Chromatography 2Transparency Market Research: Life Science Reagents Market- PCR Reagent Kits, Cell and Tissue Culture, Flow Cytometry, Electrophoresis and Chromatography 3Shire plc - Statement re: Media Speculation 2Global Market for Digital Polymerase Chain Reaction Technology to Reach $490 Billion by 2018; Equipment Sector Accounts for the Fastest Growing Segment With 33% CAGR 2Global Market for Digital Polymerase Chain Reaction Technology to Reach $490 Billion by 2018; Equipment Sector Accounts for the Fastest Growing Segment With 33% CAGR 3Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 2Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 3Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 4
... World-class investigators affiliated with US Oncology Research ... and displayed Dec. 6-10 at the Henry B. Gonzales ... Cancer Symposium ( SABCS ), an international scientific symposium ... in breast cancer. (Logo: http://photos.prnewswire.com/prnh/20110912/DA65711LOGO ) ...
... Calif., Dec. 1, 2011  AtheroNova Inc. (OTCBB: AHRO) ... and development of compounds to regress atherosclerotic plaque, ... ("CardioNova"), a Russian subsidiary of Maxwell Biotech Group ... for AtheroNova,s AHRO-001 lead compound has been ratified ...
... 2011 The collaboration of two leading cell image ... facility for archiving, sharing, and analyzing microscope images in ... and the National Center for Microscopy and Imaging Research ... have joined forces to provide a unified interface. This ...
Cached Biology Technology:US Oncology Research Affiliated Physician to Present Findings From Innovative Clinical Trial at 2011 CTRC-AACR San Antonio Breast Cancer Symposium 2US Oncology Research Affiliated Physician to Present Findings From Innovative Clinical Trial at 2011 CTRC-AACR San Antonio Breast Cancer Symposium 3US Oncology Research Affiliated Physician to Present Findings From Innovative Clinical Trial at 2011 CTRC-AACR San Antonio Breast Cancer Symposium 4AtheroNova and Maxwell Biotech Group Ratify Agreement to Develop New Atherosclerosis Drug 2AtheroNova and Maxwell Biotech Group Ratify Agreement to Develop New Atherosclerosis Drug 3Two Top Biological Imaging Centers Offer Powerful Free Online Tool to Researchers, Educators, and Public 2Two Top Biological Imaging Centers Offer Powerful Free Online Tool to Researchers, Educators, and Public 3
... The Experion HighSens analysis kit for 25 ... to perform high-sensitivity RNA analysis (at picogram ... This kit includes 25 RNA HighSens microfluidic ... 2 x 20 microliters RNA HighSens stain, ...
Monoclonal Anti-Cystatin A tissue culture supernatant Solution containing 15 mM sodium azide human cystatin A ...
... SSCP kit provides all the accessories necessary ... single-stranded conformation polymorphism analysis (SSCP) with the ... includes a cooling finger adaptor for use ... sets of 20 cm plates, 2 sets ...
... Experion StdSens analysis kit for 25 chips ... perform standard-sensitivity RNA analysis (at nanogram levels) ... kit includes 25 RNA StdSens microfluidic chips, ... x 20 microliters RNA StdSens stain, 2 ...
Biology Products: