Navigation Links
Madagascan tropical forests return thanks to better management and well-defined ownership

A study published in the May 2nd issue of the online, open-access journal PLoS ONE, shows that although loss of tropical dry forests occurs in southern Madagascar, there are also large areas of forests regenerating. The return of forest cover was found to be substantial in the study area, with an overall net increase of 4 % during the period 1993-2000. These dry forests have the highest level of plant endemism (species found only in a particular region) in all of Madagascar and are listed as one of the 200 most important "ecoregions" of the world. The study also shows that the relationship between human population density and deforestation is much more complex than previously thought.

"We were surprised to find the highest deforestation rates in an area with low human population density and large distance to markets, while the area with highest population density had stable forest cover," says Thomas Elmqvist, Professor at the Stockholm Resilience Centre, Sweden.

The results, based on analyses of satellite images and vegetation on the ground, surprised the team of scientists from Sweden and the University of Antananarivo in Madagascar. As a result, they went further and also made a social inventory based on interviews with local forest officials and villagers. This inventory revealed that loss of forest occurred mainly in areas with insecure property rights, while areas with well-defined local norms, rules and property rights for forest management showed either regenerating or stable forest cover.

"Regeneration of tropical forests has so far mostly been studied by ecologists trying to understand factors like seed dispersal and soil quality, our study clearly shows the importance of an increased understanding also of the social context behind forest regeneration," says Elmqvist. The loss of tropical forests is a concern worldwide since these forests harbor more than 50 % of the terrestrial species richness in the world and have a large imp ortance in global climate regulation. Estimates of tropical forest loss are still uncertain and a 50 % margin of error appears possible. However, scientists know even less about regeneration of tropical forests.

"We now know a fair amount about the human social context in which tropical forest loss is embedded, but very little is known about the role of social institutions in influencing regeneration of tropical forests," says Maria Tengö from Stockholm university and one of the authors behind the new study.

The new study points to the large capacity of dry tropical forests to spontaneously regenerate if existing local rules and norms (including well-defined property rights) mitigate other drivers of deforestation and alternative land-use.


Source:Public Library of Science

Related biology news :

1. An (ecological) origin of species for tropical reef fish
2. Birds and bats sow tropical seeds
3. Scientists must offer solutions for conserving tropical forests in a rapidly changing world
4. Diverse tropical forests defy metabolic ecology models
5. Agriculture and tropical conservation: rethinking old ideas
6. New understanding of parasite cell structures may provide treatments for serious tropical diseases
7. Public Library of Science to launch new, open access journal on neglected tropical diseases
8. The subtleties of tropical forest demise
9. Microfossils unravel climate history of tropical Africa
10. Scientists: As rainfall changes, tropical plants may acclimate
11. Live fast, die young true for forests too
Post Your Comments:

(Date:12/1/2015)... Calif. , Dec. 1, 2015 Synaptics ... human interface solutions, today announced a new agreement with ... OEMs with real-world test and development environments that combine ... solutions. The partnership reduces the complexity of FIDO certification ... software permits Synaptics and OEMs to verify FIDO enabled ...
(Date:11/30/2015)... BEACH, Fla. , Nov. 30, 2015 /PRNewswire/ ... as a finalist in this year,s Fierce Innovation Awards:  ... of FierceHealthIT , FierceHealthcare ... was recognized as a finalist in the category ... --> ...
(Date:11/26/2015)... Research and Markets ( ) has ... - Technology and Patent Infringement Risk Analysis" report ... --> Fingerprint sensors using capacitive technology represent ... sensor vendor Idex forecasts an increase of 360% of ... and of the fingerprint sensor market between 2014 and ...
Breaking Biology News(10 mins):
(Date:12/1/2015)... -- Twist Bioscience, a company focused on synthetic DNA, today announced ... selected as one of Foreign Policy,s 100 Leading ... of life . Each year, Foreign Policy selects ... have changed lives and are shaping the world. ... to be recognized among these incredible global leaders," said Leproust. ...
(Date:12/1/2015)... 2015 Oxford Finance LLC ("Oxford"), a specialty ... and healthcare services companies, today announced the closing of ... Inc. ("the Company"). Proceeds from the loan are being ... Company,s Rejuvaphyl™ and daily skincare products. ... brand of high potency skincare products that contain the ...
(Date:12/1/2015)... Dec. 01, 2015 ... of the "2016 Europe Cell Surface ... Technologies, Competitive Strategies, Opportunities for Suppliers--France, Germany, ... offering. --> ) has ... Europe Cell Surface Markers: Country Volume and ...
(Date:12/1/2015)... ... December 01, 2015 , ... Park Systems , ... add-on scanning ion conductance microscopy module to Park NX10 that is the only ... Park SICM benefits virtually all materials characterization that require measurements in liquid such ...
Breaking Biology Technology: