Science & Research

Sonoran Desert Network scientists monitor key resources and weather at Organ Pipe Cactus National Monument by taking measurements throughout the year, which helps us notice changes over time. This report summarizes weather, groundwater, and springs data from Water Year 2022. The data indicate the park's springs contained near-average levels of water, but high levels of several water chemistry parameters. WY2022 was warm and dry overall, with fewer cold days than average.

Across the US, changes in water availability are altering which plants grow where. These changes are evident at a broad scale. But not all areas experience the same climate in the same way, even within the boundaries of a single national park. A new dataset gives park managers a valuable tool for understanding why vegetation has changed and how it might change in the future under different climate-change scenarios.

Each park-specific page in the NPS Geodiversity Atlas provides basic information on the significant geologic features and processes occurring in the park.

The Cenozoic Era (66 million years ago [MYA] through today) is the "Age of Mammals." North America’s characteristic landscapes began to develop during the Cenozoic. Birds and mammals rose in prominence after the extinction of giant reptiles. Common Cenozoic fossils include cat-like carnivores and early horses, as well as ice age woolly mammoths.

To steward amphibians effectively, managers need basic information about which species live in parks. But species lists need constant maintenance to remain accurate. Due to recent efforts, the National Park Service now has an up-to-date amphibian species checklist for almost 300 parks. This information can serve as the basis for innumerable conservation efforts across the nation.

At nine southwestern parks, Sonoran Desert Network staff are performing environmental DNA (eDNA) sampling. By analyzing the genomes present in a water sample, eDNA sampling allows us to learn which species use a given area without the use of capture, hair snares, or cameras. The results of this inventory will help NPS staff to prioritize springs for monitoring and conservation.

Lesser long-nosed bats have been in scientific focus since the late 1900's. These unique animals face different obstacles in their changing environment, but researchers are at work in Organ Pipe Cactus National Monument, learning more about these bats. Through research here and throughout Central America, scientists are understanding better how to protect these animals and their environment.

Research at Organ Pipe Cactus has seen large monsoons, drought, and the Sonoran Desert’s impact on different species of toad. The aim of this research is to understand which species are present, as well as the geographical reach of the chytrid fungus.

When the climate changes enough, the vegetation communities growing in any given place will also change. Under an expanded bimodal climate zone, some plant communities in western national parks are more likely to change than others. National Park Service ecologists and partners investigated the future conditions that may force some of this change. Having this information can help park managers decide whether to resist, direct, or accept the change.

In the US Southwest, climate change is making it harder to preserve historic adobe structures for future generations. Using adobe test walls and rainshower simulators, staff at the Desert Research Learning Center are evaluating the potential for increased erosion, and testing the effectiveness of different treatments methods to protect against it. The results will help park managers tailor their preservation methods to better protect culturally valuable resources.