Use of columnar cacti in the Tehuacán Valley, Mexico: perspectives for sustainable management of non-timber forest products

Journal of Ethnobiology and Ethnomedicine

Alejandro Casas²  Patricia Dávila¹  Edgar Pérez-Negrón² 

[1] UBIPRO, Facultad de Estudios Superiores Iztacala, UNAM, Apartado Postal 54090 (Los Reyes Iztacala), Tlalnepantla, Estado de México, México;Centro de Investigaciones en Ecosistemas, UNAM, Campus Morelia. Apartado Postal 27-3, Santa María de Guido Morelia 89190 Michoacán, México

关键词: Sustainable harvest;    Pitaya;    Non-timber forest products;    Columnar cacti;    Arid zones forests;   

Others  :  1133416
DOI  :  10.1186/1746-4269-10-79

 received in 2014-10-11, accepted in 2014-12-14,  发布年份 2014

【 摘 要 】

Background

TEK, ecological and economic aspects of columnar cacti were studied in the Tehuacán Valley, Mexico to design sustainable regimes of fruit harvest. We analysed the amounts of edible fruit, seeds and flowers produced per hectare of cardonal, jiotillal and tetechera forests, their economic value and actual extraction rates, hypothesizing that the economic benefits of these NTFP would potentially be comparable to maize agriculture, which involves forest removal.

Methods

Our study comprised the whole territory of the community of Quiotepec, Oaxaca. Sustainable gathering rates were analysed through population dynamics models and simulations of harvesting regimes (10%, 25%, and 50% of fruit gathered) per hectare of forest type. We used estimations on economic benefit and ecological impact of these scenarios to evaluate their relative sustainability, compared with maize agroforestry systems harbouring 2-47% of vegetation cover.

Results

For the whole territory, the total annual fruit production is 509.3 ton of Pachycereus weberi, 267.4 ton of Neobuxbaumia tetetzo, 99.5 ton of Escontria chiotilla, and 8.1 ton of Myrtillocactus geometrizans. The total economic value of fruits per hectare was $315.00 U.S. dollars for cardonal, $244.60 for jiotillal, and $113.80 for tetechera, whereas rainfed agriculture of maize was on average $945.52. Demographic models for E. chiotilla and N. tetetzo indicate that 70% and 95% of fruit harvesting, respectively maintain λ > 1, but these harvest rates cannot be recommendable since the models do not consider the high inter-annual environmental variations and the non-estimated amount of fruit consumed by natural frugivorous. Extracting 25% of fruit is ecologically more sustainable, but with low economic benefits. Agroforestry systems maintaining the higher vegetation cover provide economic benefits from agriculture and forest resources.

Conclusions

Combining forest extraction and agroforestry systems are ideal scenarios to sustainable fruit harvest programmes. In addition, fair commerce of transformed products would substantially favour goals of sustainable management.

【 授权许可】

   
2014 Pérez-Negrón et al.; licensee BioMed Central.

【 图 表 】

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