Coffee and the environment

Certifications / Climate change / Coffee and the environment / Rainforest Alliance

Coffee, climate change, and Rainforest Alliance

At the Specialty Coffee Association of America expo, we attended a lecture on climate change and coffee. Several speakers discussed this topic, but I’ll focus on the climate module that Rainforest Alliance is adding to its certification. This was announced at last year’s SCAA meeting (my post here), and RA’s Jeff Hayward provided more details on the program.

Coffee, especially shade coffee, is a global crop that has a relatively lower impact on greenhouse gas emissions and a more positive impact on carbon sequestration than many other crops.There is potential for shade coffee farms to contribute to the mitigation of climate change and generate income for farmers at the same time; I have a previous post that outlines the basics.

Rainforest Alliance has developed around 100 different criteria used to certify farms. A small number are considered required critical standards. Beyond that, certification is awarded once a particular percentage of the remaining criteria are met. RA is evaluating which criteria represent practices that improve carbon storage and mitigate climate change. If those particular criteria are among those that are met by a farm, they would be eligible to receive a ”Rainforest Alliance Plus” or "Climate Friendly" certification. RA is currently testing some assumptions and developing these criteria in Guatemala.

This will help buyers choose coffee that is climate friendly, but depending on what consumers are willing to pay won’t necessarily generate additional income for producers. A second part of RA’s climate program is to work to develop a mechanism for producers to receive payments for carbon credits within existing carbon markets. Since these must be beyond ”business as usual,” existing shade coffee farms might not be able to greatly increase their amount of carbon sequestration. But this holds promise for farms that are growing sun coffee or shade monoculture as they can gain credits for planting shade trees or for reforestation — the more the better. It could also help discourage the conversion of coffee to pasture or less eco-friendly crops. RA is working on pilot carbon credit projects now in Mexico and Nicaragua.

Climate change / Coffee and the environment / Coffee news and miscellany

Green Mountain climate change grant finalists

Last month, Green Mountain Coffee Roasters announced a request for proposals for four $200,000 grants to organizations working on climate change. The grants will be awarded in each of four categories: transportation-related emissions, threats to coffee-growing communities, building political will, and empowering individual action.

They’ve just announced the finalists in each category. While I’m disappointed that a proposal by the Smithsonian Migratory Bird Center (developers of the Bird-Friendly shade coffee criteria) didn’t make the cut, I see that another great organization did. The American Bird Conservancy is one of five finalists in the Threats to Coffee Growing Communities category. Here is a summary of their proposal:

[We] will determine the additional carbon load held by shade coffee plantations over sun coffee plantations, and calculate the income differential per acre for coffee production for shade and sun  growers. We will then test a system to stream carbon offsets credit funding incentives to shade growers to compensate for the difference in income between the two systems. If it can be shown that shade coffee can be economically beneficial due to its additional carbon load (from both a sale of credits and/or consumer interest), then this project stands to benefit farmers across millions of acres of the Andes and could be the land management driver that saves the Cerulean Warbler the fastest declining songbird in North America on its wintering grounds. The project will have multiple additional benefits for famers and local communities in terms of the protection of watersheds and traditional farming techniques which are currently threatened by conversion to sun coffee.

ABC does excellent bird conservation work at home and internationally, and does so very cost-efficiently. They are very familiar with Latin American shade coffee issues. I’ve written about their Cerulean Warbler campaign, which has included working with Colombian partners and shade coffee farmers to preserve wintering habitat for this declining songbird. ABC has continued to work on reforestation projects in South America which includes shade coffee farms. I’ve also written about the potential for coffee farms to provide carbon sequestration services, and think the ABC proposal is very worthy of support.

For the next week, the public can vote for and comment on proposals at JustMeans.

Climate change / Coffee and the environment / Keurig Green Mountain / Retail and specialty roasters

Green Mountain to fund climate change projects

Green Mountain Coffee Roasters will award four grants of $200,000 each to organizations with ideas to combat climate change in four core areas: transportation-related emissions (including GMCR’s product shipping), threats to coffee-growing communities (enormous, given that climate change is already pushing coffee production to higher altitudes), building political will, and empowering individual action. Grant recipients will also be required to meet with GMCR twice a year to help the company work on reducing and mitigating its own carbon footprint.

The last two grant categories seem a little amorphous, but I’m quite enthusiastic about the potential for development of programs that can help farmers adjust to climate change (for those that can; the solution for many farmers may actually be to transition to other crops, unfortunately).

This grant project is part of a larger effort by GMCR to focus on climate change through changing business practices and raising awareness (you can read their statement on climate change here).

Spending $800,000 in the current economic crisis by a company that sells what is essentially a “luxury” item is, I think, a pretty strong statement of commitment to environmental responsibility. Kudos to GMCR.

 

Coffee and the environment

Pesticide resistance in coffee berry borers

The coffee berry borer, or broca (Hypothenemus hampei) is the most serious insect pest of coffee. Originally native to Africa, it has been unintentionally introduced to just about every coffee-producing nation in the world. Female beetles lay 30-50 eggs inside a coffee cherry, which hatch and develop inside. Thus, they damage the cherry and cause defects or the cherry drops off the tree and causes a loss. Economic impact can be substantial.

Nearly the entire life cycle of this very tiny beetle takes place inside the coffee ripening coffee cherry. For that reason, pesticides can be largely ineffective against it. Nonetheless, the neurotoxic organochlorine insecticide endosulfan is widely used in coffee farms to try to fight the borers. Not only is this not very effective, it is bad for the environment, and the life history of these beetles enables them to rapidly develop resistance to endosulfan.

The dangers of endosulfan
Endosulfan is considered highly toxic, and it has been banned in many countries, including the entire European Union. In the U.S., the Fish and Wildlife Service recommended it be banned in 2002, and a number of science and environmental groups continue to pressure the EPA to ban this pesticide (updates on U.S. ban and worldwide phase-out).

Many cases of poisoning of coffee workers by endosulfan in Colombia resulted in a ban in that country in 2001. Endosulfan, to be even marginally effective, requires rather intensive spraying because of the relatively low probability of making contact with borer beetles that are actually outside of a coffee cherry and the high concentration needed for vapor to cause mortality of any beetles that have penetrated the skin of a coffee cherry.

Even when pesticides are banned in developed nations, they may continue to be used for many years in developing countries, such as coffee growing nations. Endosulfan is toxic to insects and animals (including humans) and can persist in the environment. Pesticides are frequently applied in these countries without proper safety precautions. At a recent coffee conference, Ernest Carmen of Costa Rica’s Cafe Cristina said that endosulfan is regulated and considered toxic in Costa Rica, but that it is freely available and indiscriminately applied, even though it is not that effective against broca.

What makes coffee berry borers so able to develop resistance to endosulfan?
Coffee berry borers have an interesting life history that enables them to readily develop pesticide resistance. Most borers are females (13 to each male). All males are flightless, and mate with their sisters because they never leave the cherry in which they are born. This results in genetic inbreeding. When the mutation for endosulfan resistance pops up, it can rapidly spread through a population because of this inbreeding [1,2]. This has already occurred on the island of New Caledonia [3], and would be devastating if (or when) it happens in a mainland coffee producing region.

Alternate solution: promote shade coffee and habitat preservation to control pests!
This study found ground-foraging ants are more common and eat more coffee berry borers in fallen coffee cherries in shade coffee than on sun coffee farms. This one found that coffee farms that had little shade also had fewer beetle species — except they had a much higher abundance of coffee berry borers. And this study showed that at coffee farms which were close to natural habitat patches, migratory birds preyed upon coffee berry borers, enough to bestow a healthy economic benefit to farmers.

New biocontrol methods, especially the role of natural predators associated with shade, is an area that is and will continue to draw more research attention.

[1] Functional haplodiploidy: a mechanism for the spread of insecticide resistance in an important international insect pest. 1995. Brun, L. O., J. Stuart, V. Gaudichon, K. Aronstein, and R. H. Ffrench-Constant. PNAS 92:9861-9865.

[2] Genetic sleuths explain insects’ resistance – Hypothenemus hampei, or coffee berry borer, resistant to pesticide endosulfan due to their genetic makeup and their practice of breeding with siblings. 1995. Science News.

[3] Endosulfan resistance in Hypothenemus hampei (Coleoptera: Scolytidae) in New Caledonia. 1989. Brun, L.O., Marcillaud, C., Gaudichon, V. and Suckling, D.M.Jrl. Econ. Entomol. 82:1311-1316.

Coffee berry borer beetle by Eric Erbe, USDA Agricultural Research Service.