Burning forests across the globe

The tropical forests seem to be burning at a extremely high level this year – worldwide!

In the Brazilian indigenous reserve of Arariboia is burning unstoppable since more than 4 weeks, the guardian reports here. It seems the fire was set on purpose due to the Agricultrual interests.

In Indonesia fires this year have released more CO2 than Germany’s industry. A very impressive report summarizes the research of the World Resources Institute linking the fire to palm oil plantations.

In this context: Who wants to make a beautiful map with Brazil’s public fires and protected areas? The satellite fire foci are downloadable here in shapefile format. Spatial boundaries of protected reserves are available for example here from the Ministry for Environment (MMA).

Please be invited to feel free to comment on these two reports!

From shame to fame? On Brazil’s experiment using public disclosure for conservation

Finally our paper “Naming and Shaming for Conservation: evidence from the Brazilian Amazon” has come out in PLOS ONE.

Brazil has probably been the first country in the world experimenting with the “naming and shaming” approach in the forestry sector and at a large (Amazon) scale. We started looking at the outcomes already back in 2013, with Sophie ’s preliminary results being presented at the International Workshop: Evaluating Forest Conservation Initiatives: New Tools and Policy Needs. Early in 2014, we discussed our findings with colleagues in Brazil who later published a working paper (Assunção and Rocha, 2014) using a similar empirical strategy.

Shortly after we had submitted our manuscript, Arima et al. (2014) came out with a paper using the blacklisting policy as a quasi-experimental setting to evaluate Brazil’s surge in field-based law enforcement activities in the Amazon.

How do our results compare to the other two studies? Assunção et al.’s counterfactual simulation suggests that blacklisting has conserved ca. 12,000 sqkm of forests, whereas Arima et al. provide a range from 2,300 to 12,000 sqkm. Like Arima et al., we pre-process our data set using matching techniques. Probably because we rely on a relatively large and diverse set of matching covariates, our results lie at the conservative (lower) end of the range provided by Arima et al..

However, inspired by Paul Ferraro’s and Merlin Hanauer’s (2014) exciting recent PNAS piece on causal mechanisms behind the welfare effects of protected areas, we wanted to learn more about how the blacklisting policy has worked.
We started with what we thought was most obvious: blacklisted districts should have seen more environmental enforcement action than others. But then, reviewers pushed us further to include public credit flows and the environmental cadaster (CAR) coverage as additional mechanisms. To our surprise, none of these mechanisms seems to have played a major role in explaining the additional conservation effect of the blacklist. For the time being, we conclude that “shaming” must have been an important driver behind the type of collective conservation action at the local level that we had heard a lot about from organizations on the ground.

Of course many caveats apply: For example, we’d need to know more about potential qualitative differences in field-based enforcement action – perhaps enforcement operations were as frequent, but more rigorous in blacklisted than in non-blacklisted districts… more research is needed.

More importantly, what can we learn from the Brazilian experience?

  1. The blacklist was published only after Brazil had started a major crackdown on illegal deforestation in the Amazon. Transferability of the Brazilian experience to other tropical forest margins thus probably hinges on law enforcement or other economic consequences being a real threat. Naming and shaming can then render this threat more imminent even if it is not actually accompanied by targeted action.
  2. If you look at our S1 Fig. in our paper, you’ll wonder how the official blacklisting criteria were used, if at all, to compose the list. The authorities were probably wise to keep the process relatively in-transparent. Deforestation monitoring in Brazil is very good, but not good enough to avoid lengthy debates with blacklisted districts about how clouds and classification errors could have messed up the latest blacklist. You also want to avoid that districts strategically deforest up to some “safe limit”.
  3. Whatever criteria are used for putting districts on and off the blacklist, deforestation should probably be weighed against other criteria, such as district size or economic performance.

As a fun example, consider organizing the blacklist like a football league:

The upper league would consist of districts that perform well, i.e. low levels of deforestation per unit of agricultural GDP (or total district area). The lower league (blacklist) would consist of the districts that consistently perform poorly in terms forest loss over agricultural GDP. There are currently 771 players, divided into two leagues, the upper league would have 721 members and the lower league would have 50 members. Each period (e.g., 2-3 years given high annual remote sensing error margins) the 5 blacklisted districts that perform best among their league shift to the upper league. Simultaneously the worst-performing 5 upper-league districts now move to the blacklist. The advantage over the current blacklisting system is threefold. 1) The two criteria at which districts are ranked within their leagues can be made public without making selection predictable. 2) The two combined criteria reflect the fact that larger / economically more powerful districts naturally tend to deforest more than smaller districts. 3) Such a system could create competition for first league membership among Amazon districts and perhaps lead to overall conservation effects beyond the current system. Don’t most of us prefer fame over shame?

Severe droughts and deforestation

Science has already made the link between deforestation of the amazon basin and decreasing precipitation in the southern parts of Latin America. See here or here where Antonio Nobre presents a summary of his literature review on that topic. Now this connection is harshly being impeded into everyone’s life in São Paulo, where water scarcity has lead authorities to curb water to 2 days a week, see here (germ.) But deforestation, droughts and climate change aren’t the only reasons. Mismanagement of watersheds, corruption and the absence of a market based price signals for households are most probably more significant contributors to this summer’s water scarcity in southern Brazil.