Navigation Links
Counting frogs: Why monitoring our amphibian populations is important
Date:3/23/2010

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
sylvain-jacques.desjardins@umontreal.ca
514-343-7593
University of Montreal
Source:Eurekalert

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:
*Name:
*Comment:
*Email:
(Date:6/9/2016)... -- Perkotek an innovation leader in attendance control systems is proud to announce the introduction ... to make sure the right employees are actually signing in, and to even control ... ... ... ...
(Date:6/7/2016)...  Syngrafii Inc. and San Antonio Credit Union ... integrating Syngrafii,s patented LongPen™ eSignature "Wet" solution into ... result in greater convenience for SACU members and ... existing document workflow and compliance requirements. ... Highlights: ...
(Date:6/2/2016)... , June 2, 2016 The Department ... has awarded the 44 million US Dollar project, for the ... Vehicle Plates including Personalization, Enrolment, and IT Infrastructure , ... in the production and implementation of Identity Management Solutions. Numerous ... however Decatur was selected for the ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... , ... June 23, 2016 , ... In a new ... in Denmark detail how a patient who developed lymphedema after being treated for breast ... results could change the paradigm for dealing with this debilitating, frequent side effect of ...
(Date:6/23/2016)... June 23, 2016 ... 2016;12(1):22-8 http://doi.org/10.17925/OHR.2016.12.01.22 Published recently ... peer-reviewed journal from touchONCOLOGY, Andrew D Zelenetz ... of cancer care is placing an increasing burden ... expensive biologic therapies. With the patents on many ...
(Date:6/23/2016)... Prairie, WI (PRWEB) , ... June 23, 2016 ... ... consultancy focused on quality, regulatory and technical consulting, provides a free webinar ... is presented on July 13, 2016 at 12pm CT at no charge. , ...
(Date:6/23/2016)... ReportsnReports.com adds 2016 global ... pharmaceuticals section with historic and forecast data along ... Complete report on the Cell Culture ... companies and supported with 261 tables and figures ... The Global Cell Culture Media Industry ...
Breaking Biology Technology: