Navigation Links
Amazon corridors far too narrow, warn scientists
Date:2/18/2008

Protected forest strips buffering rivers and streams of the Amazon rainforest should be significantly wider than the current legal requirement, according to pioneering new research by scientists at the University of East Anglia (UEA).

Published in the journal Conservation Biology on March 21, this is the first wildlife study in remnant riparian tropical forest corridors.

Brazilian forestry legislation currently requires that all forest strips alongside rivers and streams on private land be maintained as permanent reserves and it sets a minimum legal width of 60m.

But after investigating the effects of corridor width on the number of bird and mammal species, Alexander Lees and Dr Carlos Peres of UEAs School of Environmental Sciences say a minimum critical width of 400m is necessary.

The findings come as the existing legislation protecting remnant forest corridors is being actively debated in the Brazilian Congress.

There are proposals on the table to actually weaken the minimum legal requirements, when they need to be strengthened, said Dr Peres.

This is a huge wildlife conservation issue locally - with global implications in terms of biodiversity and climate change - and we would urge policy-makers to act on this important new research before it is too late.

The 7 million km2 Amazon rainforest contains around a quarter of the worlds terrestrial species, yet is being cleared at a rate of 25,000 km2 per year. Eighty per cent of this deforestation has been in Brazil and 70 per cent of that can be directly attributed to cattle ranching.

Wildlife corridors are often proposed as solutions to the problems of habitat fragmentation the process of isolation of communities of animals and plants in increasingly smaller remaining habitat patches.

These forest corridors act as strips of habitat connecting wildlife populations that are otherwise widely separated by hostile cattle pastures and permit an exchange of individuals between populations. This helps to prevent inbreeding within populations and facilitates re-establishment of populations that may have already become locally extinct.

The UEA research team surveyed 37 remnant and intact riparian forest sites in the State of Mato Grosso, southern Brazilian Amazon, around the town of Alta Floresta, a 30-year-old deforestation frontier.

The wider and better-preserved the corridors were, the greater the number of species found using them.

Along with proposing a new minimum width threshold, the study also recommends fencing off large areas to allow regeneration following heavy browsing by livestock.


'/>"/>

Contact: Simon Dunford
s.dunford@uea.ac.uk
44-016-035-92203
University of East Anglia
Source:Eurekalert

Related biology news :

1. Present-day species of piranha result from a marine incursion into the Amazon Basin
2. Univ. of Arizona receives $2.5 million to study Amazon forests and climate change
3. Amazon forest shows unexpected resiliency during drought
4. Genetic corridors are next step to saving tigers
5. Model connects circuit theory to wildlife corridors
6. Innovative model connects circuit theory to wildlife corridors
7. Dung happens and helps scientists
8. Priming scientists for successful media interviews
9. Scientists expand understanding of how river carbon impacts the Arctic Ocean
10. Fishermen and UCSB scientists explore ways to improve management of California spiny lobsters
11. Scientists rebuild ancient proteins to reveal primordial Earths temperature
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... Florida , April 11, 2017 ... a security technology company, announces the appointment of independent Directors ... Bendheim to its Board of Directors, furthering the company,s ... ... of NXT-ID, we look forward to their guidance and benefiting ...
(Date:4/5/2017)... , April 4, 2017 KEY FINDINGS ... to expand at a CAGR of 25.76% during the ... is the primary factor for the growth of the ... https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The global stem ... technology, application, and geography. The stem cell market of ...
(Date:3/30/2017)... The research team of The Hong Kong ... identification by adopting ground breaking 3D fingerprint minutiae recovery and matching ... and accuracy for use in identification, crime investigation, immigration control, security ... ... A research team led by ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back for its 4th ... in San Francisco, CA. The Summit brings together current and former FDA office bearers, ... and government officials from around the world to address key issues in device compliance, ...
(Date:10/11/2017)... , Oct. 11, 2017  VMS BioMarketing, a leading ... a nationwide oncology Clinical Nurse Educator (CNE) network, which will ... need for communication among health care professionals to enhance the ... nurses, office staff, and other health care professionals to help ... breast cancer. ...
(Date:10/11/2017)... Georgia (PRWEB) , ... October 11, 2017 , ... Disappearing ... taking the lives of over 5.5 million people each year. Especially those living in ... greenovative startup Treepex - based in one of the most pollution-affected countries globally - ...
(Date:10/11/2017)... Tampa Bay, Florida (PRWEB) , ... October 11, ... ... Food and Drug Administration (FDA) has granted orphan drug designation to SBT-100, its ... antibody (sdAb) for the treatment of osteosarcoma. SBT-100 is able to cross the ...
Breaking Biology Technology: