Boundary Surveys

The Treaty of Guadalupe Hidalgo in 1848 at the end of the United States-Mexico War established the boundary between the two nations, and expanded the United States to the Pacific Ocean. In 1853, the Gadsen Purchase added the area along the modern Arizona…

Mind boggling... no testing wells and now a bigger tailings pond

https://www.proceso.com.mx/583417/grupo-mexico-desoye-orden-de-la-scjn-sobre-presa-de-jales-en-sonora

BY MILTON MARTÍNEZ, MAY 9, 2019

TAHUICHOPA, Son. (apro) - The mining company Grupo México…

Sonora has a rich natural diversity, including reptiles and amphibians. Sonora’s location on the United States-Mexico border creates some unique conservation challenges for its wildlife. We compiled a list of the amphibian and reptile species currently known for Sonora, summarized the…

Aim: To evaluate changes in breeding bird communities and assess implications for conservation.

Location: Madrean Sky Islands and northern Sierra Madre Occidental, Mexico. Methods: I compared observations from recent fieldwork (2009–2012) with an…

The flora of the lower Río Bavispe Valley from the Huásabas area south to the Río Áros at 430 to 1,510 m. elevations (1,410 to 4,954 ft.) was studied from 1995 to 2016. A total of 401 plant taxa in 74 families and 274 genera were recorded in the lower Río Bavispe Valley study area,…

Mexico is recognized globally as a mega-diversity country. The state of Sonora has very diverse fauna, fora, and vegetation. The diversity of horned lizards in the genus Phrynosoma (Phrynosomatidae) in the state of Sonora is a reflection of the landscape and biotic diversity.…