Cool insights for a hot world: trees and forests recycle water

Anyone who has walked outside on a sunny day knows that forests and trees matter for temperature, humidity and wind speed. Planting trees speaks to concerns about climate change, but the directly important aspects of the tree-climate relationships have so far been overlooked in climate policy where it relates to forest.

That, at least, is the conclusion of a new review. The authors suggest that the global conversation on trees, forests and climate needs to be turned on its head: the direct effects via rainfall and cooling may be more important than the well-studied effects through the global carbon balance.

Yet, current climate policy only recognizes the latter. While farmers understand that trees cool their homes, livestock and crops, they had to learn the complex and abstract language of greenhouse gasses and carbon stocks if they wanted to be part of climate mitigation efforts. Not anymore, if the new perspectives become widely accepted.Read more

Research cuts a potential new path to faster, cheaper tropical forest restoration: Thinning

A perfusion of pioneers in a regenerating part of the Harapan Rainforest in Sumatra, Indonesia. Photo By Rhett Harrison/ICRAF
A perfusion of pioneers in a regenerating part of the Harapan Rainforest in Sumatra, Indonesia. Photo By Rhett Harrison/ICRAF

A common way to restore a degraded forest is to plant seedlings and nurture these into full trees. Indeed, to most people restoration and tree-planting (with native species) are virtually synonymous. Planting and nurturing tree seedlings over a wide area, however, can be an expensive and labour-intensive affair. Not to mention the decades or even centuries it takes before seedlings grow into trees.

Another common path to restoration is to simply protect a degraded forest from further degradation, often by fencing it off. Over time, lost tree cover will return through natural regeneration. This option is a relatively inexpensive, but it can also take centuries to achieve full restoration and the environmental benefits it brings.

Read more. . .

Fig trees throw down a lifeline to a healthier planet

Fig trees were here when dinosaurs first roamed the planet. And today, just as they did 80 million years ago, Ficus species continue to bring nourishment, shade, water and numerous other gifts to people and plants. What’s more, these trees may help us claw our way out of the ecological conundrums we currently find ourselves in—deforestation, species loss, and even climate change.

In a gripping 224 pages of eloquent writing, Mike Shanahan’s first book, ‘Ladders to Heaven: How fig trees shaped our history, fed our imaginations and can enrich our future’, brings us the fascinating story of fig trees. From the age of dinosaurs, to pre-history and the age of exploration, and into the present times, the reader learns how these trees shaped the planet and fascinated philosophers, conquerors and commoners alike. Read more. . .

For more and better-quality food production, take care of pollinators

The evidence is clear: For big gains in crop production, our landscapes must become more hospitable to some of the planet’s littlest creatures— its pollinators.

bee-coffee
Coffee pollination by carpenter bee (Xylocopa sp.). Photo by Dino Martins

Bees, birds, butterflies, moths and some small mammals transfer pollen from flower to flower, causing fruit to set. This environmental service of pollinators is what secures the harvest of a huge proportion of the world’s food production.

At an invited talk at the Nairobi headquarters of the World Agroforestry Centre (ICRAF) on 8 January 2016, Kenyan naturalist and entomologist Dino Martins, the Executive Director of the Mpala Research Centre and Chair of the Insect Committee of Nature Kenya, delved into the intimate links between the world’s food security and pollination. Read more. ..

Why food waste is a concern for tropical forest conservation

Does wasting food lead to the loss of tropical forests?

Sacred wood in Cote d'Ivoire. Photo by Emilie Smith/ICRAF
Sacred wood in Cote d’Ivoire. Photo by Emilie Smith/ICRAF

Though not obvious at first glance, researchers say clear links exist between food loss and wastage, and deforestation. This is because clearing intact forests to produce both commodity crops and subsistence crops is one of the main factors (or drivers) that lead to their depletion, particularly in the tropics and subtropics.

“If food waste is not abated, then the land required to produce food is going to increase, especially in view of a sharply increasing global population,” warned Lalisa Duguma, scientist, Sustainable Landscapes and Integrated Climate Actions, at the World Agroforestry Centre (ICRAF) and the ASB Partnership for the Tropical Forest Margins. Lalisa was presenting at a well attended side event of the XIV World Forestry Congress, Durban, 7-11 September 2015. Read more. . .

Forests and society a major theme at the XIV World Forestry Congress

Forest give food and oxygen, stabilize land, improve water quality and availability, reduce the effects of climate change, and provide spaces for cultural activities, reflection and enjoyment.

Convened by the United Nations Food and Agriculture Organization (FAO) and hosted in Durban by the Government of South Africa, the XIV World Forestry Congress (#Forests2015 on twitter) 7-11 September 2015, will have a strong focus on young people, women and local communities in defining a vision for a sustainable future of forests and forestry. Read more. . .