Concepto de Desarrollo Sustentable

Pastizales Naturales del Valle Calchaqui

Resumen del trabajo: 
 

Barbarán F.R., Saravia Toledo, C.J. y A.A. Sulekic 2005. Disponibilidad de Forraje y Uso de la Flora en el Valle Calchaquí de la Provincia de Salta, Argentina.  Actas del III Congreso Nacional Sobre Manejo de Pastizales Naturales. Paraná, Entre Ríos, Argentina. 8 al 12 de Octubre de 2005. Asociación Argentina de Manejo de Pastizales Naturales.

Actividad de Ctenomys sp. en los Valles Calchaquies

Los roedores del género Ctenomys también son conocidos como ¨ocultos¨, justamente porque son muy difíciles de observar. Estos topos argentinos son comunes en zonas áridas y semiáridas, donde con los túneles que cavan, modelan el paisaje influyendo en el relieve, la erosión y en la velocidad de infiltración del suelo.

Aqui pueden ver el sitio exacto donde filmé un topo en actividad, durante una vivita a Cafayate el 9 de Septiembre de 2009, a las 16.40 hs.


Ver Observación Ctenomys 17-09-2009 en un mapa más grande

Publicaciones del Dr. Francisco Barbarán

Algunas publicaciones del Dr. Francisco Barbarán están disponibles aqui Academia.edu se trata de libros, artículos publicados en revistas científicas y en actas de congresos

Evaluación de Sostenibilidad del Uso de la Fauna Chaqueña

The author with skins of Tupinambis rufescens

Abstract

The commercial use sustainability of the American ostrich (Rhea americana),peccary (Pecari tajacu) and the tegu lizard (Tupinambis rufescens), was assessed in the Semiarid Chaco of the Province of Salta, NW Argentina, specifically in Rivadavia Department (25750  Km2) located on the borders of Argentina, Bolivia and Paraguay.

The humane use of forest and range, was studied between 1862, when Rivadavia was founded, and 1998 to assess the availability of habitat for the target species. Their population trends were examined by interviewing trappers (n=115), asking them if the populations were increasing, decreasing or without changes through time, as well as asking about the causes explaining that trend, such as changes in the habitat or excessive trapping.  Their answers were studied using the Chi Square test.

The conservation status of each species was obtained using the SUMIN Index because it  allows integration of a number of variables, giving them a numeric value and thus making possible to have a quantitative conservation index useful to see if the use is ecologically sustainable or not.

Considering the economic dimension, the trade of feathers and skins of the species of interest was studied, considering the income distribution along the trade chain, the main indicator of economic sustainability.

In the social dimension of sustainability, the emigration of the humane population of Rivadavia Department was analyzed between 1914 and 1998, the effect of development projects directed to aborigines between 1969 and 1992 as well as the use and distribution of public lands.

In the institutional dimension, the policy, legislation and institutional evolution related to the use of forests, range and wildlife between 1853 and 2000 was analyzed.

In conclusion, the use of the tegu lizard is sustainable in the ecologic dimension and neuter (sustainable actions are balanced with others not sustainable) in the economic and social dimensions, but it is unsustainable

in the institutional dimension. The trade of peccary and greater rhea is unsustainable in all the dimensions studied.

The relationships between the indicators of different dimensions of sustainability were established in a ¨Command Board of Sustainability¨, useful to monitor the use of the natural resources and the trend to sustainability or not of the use system of the target species as well as the ecosystem Semiarid Chaco, linking research findings with the process of decision-making.

A book about this evaluation is available in Amazon.com