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:3/30/2017)... LOS ANGELES , March 30, 2017  On ... Hack the Genome hackathon at ... This exciting two-day competition will focus on developing health ... experience. Hack the Genome is ... has been tremendous. The world,s largest companies in the ...
(Date:3/27/2017)... March 27, 2017  Catholic Health Services (CHS) ... Systems Society (HIMSS) Analytics for achieving Stage 6 ... sm . In addition, CHS previously earned a ... using an electronic medical record (EMR). ... level of EMR usage in an outpatient setting.  ...
(Date:3/22/2017)... VILNIUS, Lithuania , March 21, 2017 /PRNewswire/ ... identification and object recognition technologies, today announced the ... development kit (SDK), which provides improved facial recognition ... safety cameras on a single computer. The new ... algorithms to improve accuracy, and it utilizes a ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... ... 23, 2017 , ... A recent survey conducted by the Weed Science Society ... weed in 12 categories of broadleaf crops, fruits and vegetables, while common lambsquarters ranks ... and Canada participated in the 2016 survey, the second conducted by WSSA. A ...
(Date:5/23/2017)... ... May 23, 2017 , ... Vortex Biosciences , provider of circulating tumor ... circulating tumor cells using Vortex microfluidic technology ” in Nature Precision Oncology on May ... Dino Di Carlo and Dr. Matthew Rettig at the University of California, Los Angeles. ...
(Date:5/23/2017)... ... May 23, 2017 , ... Customers often prefer ... again and again. METTLER TOLEDO has released two new videos that show how ... integration of the ACT350 into Siemens and Allen Bradley PLCs is easy and ...
(Date:5/21/2017)... , ... May 20, 2017 , ... ... helps avoid the lengthy trial and error process by finding the right antidepressant ... can also strengthen the doctor-patient relationship through a personalized approach to treatment. ...
Breaking Biology Technology: