Supplementary Material

Effects of past and future land conversions on forest connectivity in the Argentine Chaco.

María Piquer-Rodríguez • Sebastián Torella • Gregorio Gavier-Pizarro •
José Volante • Daniel Somma • Rubén Ginzburg • Tobias Kuemmerle

Landscape Ecology Journal, Special Issue: Ecological Networks.

Table S1. Forest conversion allowed per province and zone in the Argentine Forest Law. Each provincial order specifies a range of forest conversion for each zone (e.g., 60-20% in green zones in the province of Formosa) sometimes according to some spatial attributes such as slope (e.g., Salta) or plot size (e.g., Chaco).

Forest conversion (area %) / Nat. Law 26331/10 - Order 91/09
Province / Green zone / Yellow zone (productive and silvopastoral uses) / Red zone / Provincial order in council / Provincial law
Chaco / 90 / 70 / 0 / 932/2010 / 6409/2009
Santiago del Estero / 70 / 60 / 0 / 1162/2008 and 1830/2008 / 6942/2009 and 6841/2007
Formosa / 60 / 0 / 0 / -- / 1552/2010
Salta / 70 / 70 / 0 / 2785/2009 and 2211/2010 / 7543/2008 and 3136/11
Jujuy / 100 / 25 / 0 / 2187-PMA-2008 / 5676/2010
Santa Fe / 50 / 50 / 0 / 42/2009 / in preparation
Cordoba / 70 / 70 / 50 / 1476/2011/and 170/2011 / 9814/2010
Tucuman / 95 / 50* / 0 / -- / 8304/2010
Catamarca / 70 / 50* / 0 / 1663/2011 / 5311/2010

Source: provincial orders and Adamoli et al. 2011. The percentages specified in this table under yellow zones consider productive and silvopastoral uses. (*) values set by the authors based on other provinces’ percentages because forest conversion is possible but the provincial orders do not specify a percentage

Table S2. Evaluation of different search radii on the connectivity indices for scenario scenario1_np* (systematic allocation of conversions in green zones with no protection).

Radius [m] / PROX_MN / CONNECT
100 / 0.000 / 0.0000
1000 / 27231.911 / 0.0086
2000 / 31844.321 / 0.0229
5000 / 33392.425 / 0.0923
7000 / 33642.698 / 0.1620
10000 / 33794.529 / 0.2945
25000 / 33962.843 / 1.4393


Fig. S1. Study area with current protected areas and priority areas for biodiversity conservation of The Nature Conservancy (TNC).


Fig. S2. Degree of fragmentation (based on entropy theory) for the base years studied.