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Coordinated conservation and restoration critical to save Asia’s threatened native trees

New research

The rich variety of native trees in South and Southeast Asia has revealed that they are on the verge of extinction. Spatically explicit threat assessments across the region focus on 63 socio-economically important native trees in Asia, where all species include habitat conversion, overgrazing, overgrazing, and fire. It shows that it is extremely vulnerable to at least one of the common threats to its landscape. , And climate change. The landscape of these forests Important for maintaining diverse ecosystem services for hundreds of millions of peopleThere is an urgent need for coordinated, targeted conservation and restoration initiatives to prevent further destruction and biodiversity loss that impair the functioning of ecosystems.

On average, only 10% of the range of species investigated, characterized by limited exposure to the threats investigated, was easily suitable for conservation. Surprisingly, 75% of these areas are outside existing protected areas. The rainforests of northern Myanmar’s Tenaselim and the lowland and mountainous rainforests of Borneo have emerged as hotspots for expanding conservation activities that benefit many native tree species. At the same time, 40% of the combined seed range is a restoration priority.

Due to the high population density and socio-economic development needs of extreme species diversity, identifying climate-sensitive and population-specific conservation and restoration priorities for affected forests is for many Asian countries. It is important. “Understanding species distribution and threats enables policy makers and land managers to plan effective and cost-effective conservation and sustainable use strategies for species throughout their area, including outside protected areas. “It helps,” says Dr. Liina Jaronen, a scientist at the Bioversity International Center. CIAT (Alliance) that coordinated her research.

63 species selected for socio-economic importance in 20 countries have been identified by experts in the Asia Pacific Forest Genetic Resources Program (APFORGEN). Trees are a variety of habitats with a variety of characteristics and uses, from timber to commercially and locally important non-timber forest products, as well as those of value for providing ecosystem services such as sabo, soil improvement and shade. Inhabits in.

Context-specific approach to conservation and repair

The Alliance has worked with APFORGEN partners to create a combination of multiple maps to identify the areas covered by each of the 63 conservation and restoration activities. The map accurately shows (1) the major areas recommended for ex situ conservation in areas where both current and climate change threat levels are low. (2) Recovery activities such as active tree planting and population regeneration support in areas where the current threat level is high but the threat level of climate change is low. (3) Ex situ conservation by rearranging or collecting and storing seeds in gene banks in areas with high climate change threat levels to protect genetic resources that may disappear due to climate change by 2050.

Hannes Gaisberger, Associate Scientist of the Alliance, said: “This result helps decision makers, forest managers, and nature maintenance practitioners direct their financial and human resources to where they can achieve their greatest impact.”

“The data from this project can be used to predict where the potential habitats of different species are and pass the data to top management to show the urgent need for protection.” Confirms project partners Vilma Bodos and Forest. Sarawak Province, Malaysia.

Endangered species throughout the range include the maca or ben tree (Afzelia xylocarpa), which is primarily at risk of climate change. Temak (Shorea roxburghii) and Black Rosewood (Dalbergia Oliveri) are most threatened by habitat transformation. Like wild nutmeg (Myristica malabarica) and agar wood (Aquilaria crassna), there is little threat of overfishing. All these seeds are rarely cultivated. That is, the remaining natural populations at risk are usually the only source of their valuable products and seeds and seedlings needed for restoration and planting programs.

Indonesia, with the 33 trees surveyed, is an ex situ conservation hotspot, with India accounting for the highest proportion of important areas of restoration. On the other hand, countries that prioritize ex situ conservation as a result of high climate-related threats include Indonesia, India, Thailand and Myanmar.

Application of survey results

Although this study covers only a small part of the total tree diversity in the region, “the current protected area network throughout the Asia-Pacific has the genetic resources of ecologically and economically important tree species. It is important because it shows that it is not capturing, says Chris Kettle, Principal Scientist and Global Program Leader for Tree Biodiversity in the Alliance.

In the highly diverse countries of the region, combined multi-species maps help identify areas where conservation and restoration actions create synergies between species and optimize land and resource use. .. Maps also make it possible to identify synergies between countries in protecting the genetic resources of a species. Climate-resistant seed sources for forest and landscape restoration programs..

Given the high diversity of species, work has just begun to protect forest landscapes. The Alliance is currently working with domestic partners in Cambodia, Laos and Vietnam to make detailed plans. Endangered and highly valuable rosewood conservation efforts (Dalbergia spp.) Constructed based on the same methodology as this study.

“For about 13% of the selected species, we did not have sufficient data on known outbreaks to perform species distribution modeling. This indicates that work is just beginning. We hope that will inspire forest managers, researchers, conservation and restoration practices throughout the region, continue to work, and work in an increasingly coordinated manner, ”Jalonen concludes.

Read the paper on Conservation Biology:

“Tropical and subtropical Asian precious tree species are under threat”

This study is based on the results of the initiative.APFORGIS – Establishing an information system to protect native tree species and their genetic resources in the Asia-Pacific region“. This initiative was carried out in collaboration with more than 60 experts and 11 partner organizations across Asia. It is through the Federal Ministry of Agriculture and Food and the CGIAR research program on forests, trees and agroforestry. Funded by the German government.

/ Public release. This material from the original organization / author may be of a particular point-in-time nature, edited for clarity, style, and length. The views and opinions expressed are those of the author.See completely here..



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