List of Estuary and Coastal Seabirds on the Sea of Cortez in Southern Sonora.
Environmental organizations are working in the areas near Alamos
Alamos lies in the foothills of the Sierra Madre Occidental. An abrupt change in elevation occurs from the Sea of Cortez (sea level) to Alamos at 1,346 feet to the Sierra de Alamos rising to 6,700 feet continuing on to the Chihuahua border where the elevation reaches 7,500 feet. This actually covers 70 miles as the crow flies.
As you enter Sonora traveling south from the Arizona border you pass through the richness of the Sonoran Desert. The landscape is dominated by Palo Verdes, Ironwood and huge columnar cacti.
Arriving at the seaport of Guaymas, the Sierra Madre practically touches the Sea of Cortez. From here south along the coastal plain there are extensive agricultural lands supported by the reservoirs created on the Yaqui and Mayo Rivers.
The coastal lowlands are very diverse in plant and animal species. Due to the increase in rainfall and absence of frost, this vegetation is referred to as Matoral. Matoral blends at the coast with dune systems and rich mangrove estuaries making the coast of Sonora rich in natural resources as it meets the Sea of Cortez.
From sea level at Navojoa you turn east and climb thirty five miles to Alamos. As Matoral gives way to foothills at the Sierra Madre, you find yourself entering the Dry Tropics or Tropical Deciduous Forest. The road winds through the more dense vegetation that exhibits flowering trees every month of the year. This forest, with a canopy of ten to twelve meters envelopes the tall columnar cacti, so in the wet season they go unnoticed while in the dry season they appear to dominate the forest. All this makes a picturesque entrance to the colonial town of Alamos.
Alamos lies in the foothills of the Sierra Madre. Along the falda (skirt) of the Sierra the fingers of Tropical Deciduous Forest extend up into oak and pine – this ribbon of Dry Tropical vegetation extends along the foothills into Central America. Alamos lies in the most northern limits of Tropical Deciduous Forest in this hemisphere.
Navojoa Annual Temperatures, Precipitation and Weather
The Tropical Deciduous Forest hosts two climates: a dry temperate time from mid October through June and a wet humid tropical time from July through mid October. The months of November through February are salubrious with days in the 80ºs and nights in the 50ºs.
In March the forest drops most of its leaves, the columnar cacti become more prominent like soldiers standing in the forest. In June the humidity builds heralding the coming wet season. On San Juan’s day (June 24) the indigenous people dance and pray to San Juan for rain and blessing of good crops. It almost always rains on this date. The rains are a celebration of life, as the trees burst into leaf, frogs sing and iguanas look for new mates. Monsoon type rains deluge the hills daily. Even though the humidity is high, the temperatures are more stable. The wet season is a time to rejoice.
More than 400 species of birds have been recorded from the coast into the foothills at Alamos. Such spectacular birds as the Roseate Spoonbills, McCaws and Trogans exist among the 400. Many birds, mammals, plants and reptiles find their most southern or northern limits in the Alamos region.