Carrichtera annua (Ward's weed) is an annual herb (family Brassicaceae) with white to yellow flowers and hairy lobed leaves found in the south coast ranges of California.
Contrast of Phoenix and Tucson’s different approaches to urban water management—Phoenix leaning heavily on supply augmentation and growth-first policies, while Tucson adopted earlier and more aggressive conservation strategies—highlighting how these divergent paths shape their sustainability and resilience in a water-scarce desert environment
As the worsening drought crisis continues to impact communities across the West, the Department of the Interior today announced urgent action to improve and protect the long-term sustainability of the Colorado River System, including commitments for continued engagement with impacted states and Tribes.
The purpose of the withdrawal requested is to protect the lands pending conveyance to the Town of Superior (Town), Pinal County, Arizona as directed by Congress.
This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (PM) data collected at the Resolution Copper Project near Superior, Arizona for the second quarter, April 1-June 30, 2015.
This report summarizes the meteorological, nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matter (PM) data collected at the Resolution Copper Project near Superior, Arizona for the second quarter, April 1-June 30, 2012.
The Audubon IBA bird survey data collection coordinated by the Tucson Audubon-IBA Program, Avian Science Initiative, at 7B Ranch provided key "mesquite bosque avian habitat" data for these reviews.
This is a summary of personal observations and impressions of the continued presence or absence of the herpetofauna which have been previously reported at the Appleton-Whittell Research Ranch. A total of fifty-two amphibian and reptile species have been reported within the Research Ranch boundaries. The continued existence of several species may be in doubt.
