Navigation Links
Counting frogs: Why monitoring our amphibian populations is important

Montreal, March 23, 2010 Amlie Perez is preparing to tally the number of amphibians in the Montreal area for the second summer in a row. The objective? To measure the impact of the invasive plant Phragmites australis, or common reed, on the amphibian populations of southern Quebec.

A graduate student in biology at the Universit de Montral, Perez intends to visit more than 50 swamps and lakes. Last year she spotted seven species: the grey treefrog, northern spring peeper, wood frog, green frog, northern leopard frog, bullfrog and the American toad. She captured and released 257 adults and 1600 tadpoles.

Phragmites australis comes from overseas and has spread in Quebec ecosystems at an alarming rate. Wherever it lays its roots, the neighboring biodiversity is threatened and biologists are increasingly interested how plants and animals either adapt or disappear from that ecosystem.

"The analysis is far from over," says Perez. "Initial findings show that there is a slight decrease in frogs wherever Phragmites australis grows except northern leopard frog populations, which seem intact."

The last leg of her research will be experimental. Perez will put eggs, tadpoles and colonies of Phragmites australis in controlled water basins to see how pH levels, oxygen and temperature are affected.

As a European, Perez moved to Quebec to explore its natural ecosystems and abundant biodiversity. She quickly learned, however, that the natural treasure is far from secure. More than a third of Quebec's amphibian species are threatened with extinction, according to the International Union for Conservation of Nature. That number could increase if Quebec wetlands and natural habitats aren't protected.

"The disruption of aquatic landscapes (increased agriculture, disappearing of wetlands) is the number one reason for the decline in amphibian populations," says Perez. "The invasion of these wetlands by exotic plants could be just as disastrous."

Perez' research, which is supported by Ducks Unlimited Canada, is being supervised by Jacques Brisson, a researcher at the Universit de Montral Institut de recherche en biologie vgtale, and Marc Mazerolle, a professor at the Universit du Qubec en Abitibi-Tmiscamingue. Both are conducting a broad study of the impact of this invasive Phragmites australis in Quebec. Their work is supported by the Natural Sciences and Engineering Research Council of Canada and the Canadian Wildlife Service.


Contact: Sylvain-Jacques Desjardins
University of Montreal

Related biology news :

1. Mars Express -- 5000 orbits and counting
2. When accounting for the global nitrogen budget, dont forget fish
3. Counting tumor cells in blood predicts treatment benefit in prostate cancer
4. Study shows Californias autism increase not due to better counting, diagnosis
5. Carbon accounting from atmospheric measurements -- the aircraft perspective
6. Counting sheep in climate change predictions
7. The straight poop on counting tigers
8. Counting duplicated genome segments now possible
9. Miscounting bioenergy benefits may increase greenhouse gas release
10. Genes, Environment and Health Initiative invests in genetic studies, environmental monitoring
11. Mellon awards Carnegie Grant for Ecological Monitoring in South Africa
Post Your Comments:
(Date:4/13/2017)... , April 13, 2017 UBM,s Advanced Design ... will feature emerging and evolving technology through its ... Summits will run alongside the expo portion of the ... panels and demonstrations focused on trending topics within 3D ... design and manufacturing event will take place June 13-15, 2017 ...
(Date:4/11/2017)... April 11, 2017 Crossmatch®, a globally-recognized ... solutions, today announced that it has been awarded ... Projects Activity (IARPA) to develop next-generation Presentation Attack ... "Innovation has been a driving force within ... will allow us to innovate and develop new ...
(Date:4/11/2017)... , April 11, 2017 No two ... researchers at the New York University Tandon School ... Engineering have found that partial similarities between prints ... used in mobile phones and other electronic devices ... The vulnerability lies in the fact that ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... October 10, 2017 , ... ... program has won a US2020 STEM Mentoring Award. Representatives of the FirstHand program ... in Volunteer Experience from US2020. , US2020’s mission is to change the trajectory ...
(Date:10/10/2017)... CALIFORNIA (PRWEB) , ... October 10, 2017 , ... ... technological innovation and business process optimization firm for the life sciences and healthcare ... BoxWorks conference in San Francisco. , The presentation, “Automating GxP Validation for ...
(Date:10/9/2017)... N.C. (PRWEB) , ... October 09, 2017 , ... At ... announced Dr. Christopher Stubbs, a professor in Harvard University’s Departments of Physics and Astronomy, ... Stubbs was a member of the winning team for the 2015 Breakthrough Prize in ...
(Date:10/7/2017)... ... October 06, 2017 , ... ... its ProxiMeta™ Hi-C metagenome deconvolution product, featuring the first commercially available Hi-C ... software to perform Hi-C metagenome deconvolution using their own facilities, supplementing the ...
Breaking Biology Technology: