Showing posts with label biodiversity. Show all posts
Showing posts with label biodiversity. Show all posts

Tuesday, May 29, 2012

Wild Collection Protects Biodiversity; Yangtze Mountains






WWF, IUCN, and TRAFFIC created an initiative in the mountains of China's Upper Yangtze ecoregion as part of the EU-China Biodiversity Program (ECBP) to support organic wild crop harvesting practices and certification procedures, as well as FairWild principles.


Due to a 1998 logging ban and the 2000 "Grain for Green" program, which discourages farming on steep slopes, households were encouraged to  start in more wild collection of medicinal plants in the mountains (home to endangered wildlife, including the Giant Panda (Ailuropoda melanoleuca) and the Takin (Budorcas taxicolor)). This initiative was designed to support the collectors in making use of native species in the mountains, without destroying the habitat. 

Now this project has won the prestigious Equator Prize as an outstanding local initiative working to advance sustainable development solutions for people, nature, and resilient communities in countries receiving support from the UNDP. The project has also scaled up from one village in the 2008 and 2009 harvests up to 22 villages in the 2011 harvest. A survey of project sites in March 2011 found incomes from medicinal plant collection had risen, thanks to the certification schemes; in one village by almost 18 percent.
        
"This project is proving that local harvesters from villages surrounding the Giant Panda conservation area can successfully implement meaningful sustainability standards," said Josef Brinckmann, VP of Sustainability for TMI. 

Megaherbivores Gardeners of the Forest






The journal Biotropica has published a report which shows that the progressive disappearance of seed-dispersing animals like elephants and rhinoceroses is putting the structural integrity and biodiversity of the tropical forest of South-East Asia at risk. 

"Megaherbivores act as the "gardeners" of humid tropical forests: They are vital to forest regeneration and maintain its structure and biodiversity," Ahimsa Campos-Arceiz, the lead author of the study, explained. Thick forest growth means little space for trees to germinate and grow and scarce light. Seed dispersion is made more complicated by the lack of wind due to the trees that are up to 90 m high. Plant life is then limited to seeds dispersed by those animals that eat pulp. They either scatter seeds by dropping their food, regurgitating it or by defecating later on.
        
In the case of large seeds, "plants need a large animal capable of eating, transporting and defecating the seeds in good conditions," said Luis SantamarIa, co-author and researcher at the Mediterranean Institute for Advanced Studies (IMEDEA) of Spain's CSIC Scientific Research Agency. This is where elephants and rhinoceroses come into play because they can scatter large quantities of seeds thanks to the fact that they slowly digest very little of their food.
       
However, habitat loss, poaching, and the conflict between elephant and man has caused a 95 percent loss in Asian elephant (Elephas maximus) historical distribution range and has left the rhinoceros just a step away from extinction: there are less than 50 Java rhinoceroses (Rhinoceros sondaicus) and 200 Sumatra rhinoceroses (Dicerorhinus sumatrensis).
        
"If these megaherbivores disappear from the ecosystem, their contribution to ecological processes will too be lost and the path of the ecosystem will change irreversibly," explained the lead author, who goes on to state that "the most probable consequences are the change in the structure of the undergrowth and the forest and the loss of certain species."
   

Wednesday, March 21, 2012

Slash-and-burn 'improves tropical forest biodiversity'

According to the Science and Development Network slash-and-burn a practice common among indigenous and small scale farmers and foresters, actually improves tropical forest biodiversity.
Slash-and-burn agricultural practices have been banned by many governments because of the risk of uncontrolled fires. However, it turns out that they provide better growing conditions for valuable new trees than more modern methods of forest clearance.

Testing three diferent methods: clear-felling, bulldozing, and slash-and-burn: researchers cleared 24 half-hectare areas of tropical forest in Quintana Roo state, in southern Mexico. Mahogany seeds and seedlings were then planted and after 11 years, the researchers compared the sites and found that slash-and-burn techniques had provided the best growing conditions for mahogany. Many other valuable species also thrived in the slash-and-burn plots, whereas in clear-felled areas more than half of each area contained tree species of no commercial value. In areas cleared by slash-and-burn 60 per cent of species were commercially valuable. Additionally, the largest trees in slash-and-burn areas were 10 percent bigger than those in bulldozed areas.

Results were presented at the annual conference of the International Society of Tropical Foresters at Yale University www.enn.com/top_stories/article/43972

Thursday, February 18, 2010

Biofach 2010 'Organic and Fair'

Hello from the Biofach 2010 in Nuremberg Germany. Here inside things are much quieter than in 2009. There are some 200 less exhibitors and several hundred less visitors. Hall three is closed entirely this year and there are actually places to sit at the various cafes around the 'Fair and Bio' section of the fair. This is a win and a lose for everyone. Maybe huge business like Wal-Mart and McDonalds will leave organic alone if the market falls a little bit, on the other hand small organic producers and communities are looking at tougher markets and less income for their labor.

This years Biofach is about walking around eating and looking for people to learn from about the livlihoods of the farmers and high biodiversity production systems. There are a number of coffee, cacao, brazil nut and cashew farmers here from Latin America and Africa who are eager to discuss and have the hands that produced the food products we are discussing.

This years theme for Biofach is 'Organic and Fair' and has managed to draw a huge crowd of people who are eager to network and discuss the issues regarding the processing marketing and sales of these food products but a dirth of people who would like to discuss the actual production. I am headed to a discussion on wild collection this afternoon and then to a climate change discussion and hope to learn more there.