Highest Point

2440 meters

Sierra El Tigre

The Sierra El Tigre of northeastern Sonora is a rugged Sky Island mountain range. It covers substantial terrain – its basal area spreads out over 600 square miles. Surrounded by the Rio Bavispe valley on three sides, it is somewhat isolated from neighboring high country, except from the south where it is nearly a peninsular extension from the spine of the Sierra Madre Occidental. The Sierra El Tigre is separated from the Sierra Madre by a pass of rugged hills that rise to around 1,200 to 1,600 meters (INEGI, 1998).

Amphibians and Reptiles of the Sierra El Tigre Region, Sonora, Mexico

The northeastern corner of Sonora, Mexico, is lightly populated and contains some spectacular natural landscapes. Among its gems is Sierra El Tigre, a large and high mountain range surrounded on three sides by the Río Bavispe. The range is part of the Sky Islands, also known as the Madrean Archipelago for its relation to Mexico’s Sierra Madre Occidental. The herpetofauna of Sierra El Tigre region has never been described previously but early collecting efforts there have played an important part in the understanding and conservation of amphibians and reptiles in Sonora and Arizona.

El Imparcial publishes videos and articles on recent Madrean Discovery Expedition to Sierra El Tigre

desierto

Expeditión a favor de la ciencia y la conservaciónArticles

  1. Sierra del Tigre, manto de biodiversidad
  2. Expeditión a favor de la ciencia y la conservación
  3. Es Sierra El Tigre refugio de alacranes
  4. Largo, difícil, pero majestuoso camino
  5. Pequeños insectos que sirven para polinizar
  6. Viven para la conservación de la naturaleza

Videos

  1. Sierra del Tigre, manto de biodiversidad
  2. Expedición a favor de la ciencia y la conservación
  3. Sierre El Tigre, refugio de alacranes
  4. Largo, difícil, pero majestuoso camino
  5. Pequeños insectos que sirven para polinizar
  6. Viven para la conservación de la naturaleza

The Vegetation and Flora of the Region of the Rio de Bavispe (Stephen S. White, 1948)

Vegetation and Flora research from 1938 to 1941 in the Rio Bavispe / Sierra El Tigre region. At that time White said that the area "...certainly is one of the least known regions of the North Mexican border" and "has been almost completely neglected by scientists". This is no longer entirely true about northeastern Sonora, but there are still large gaps in knowledge in the region.

From the Introduction:

Trip Report - Sierra El Tigre, Sonora, Mexico

The goal in traveling to the Sierra El Tigre - one of the most extensive of the sky islands - was to complete a basic bio-geographical assessment of the area, listing species of flora and fauna present in the Sierra El Tigre and especially “Fracción Número III Sierra El Tigre” property of Francisco Tarazón, located within the limits of the Ajos-Bavispe Reserve. We also sought to determine the extent of past and present human disturbance and impact as well as the extent of wilderness character in the range.