A 24-hour survey of biodiversity


What is a Bioblitz?

In short, a BioBlitz is a resource survey – a race against time to see how many species of plants, animals, microbes, fungi, and other organisms can be accounted for in a specific geographic area. BioBlitz events bring together scientists, naturalists, volunteers, and other community members to document the spectrum of wildlife present in our community, contributing to an improved understanding of local natural resources.

A 24-hour event, the purpose of Save Mount Diablo’s BioBlitz is to provide a snapshot of biodiversity. It helps to establish important baseline information on species, which often guides stewardship and land management decisions. For example, the event has resulted in rerouting a trail away from newly discovered rare plants, targeting non-native weeds in sensitive resource areas and contributing rare wildlife occurrence records to regional databases, thereby affecting development proposals.

Cataloguing the species found will update past records and provide an ecological snapshot of each BioBlitz site for agency staff. In the time of climate change, these efforts help establish baselines by which change can be measured. Our investigation will also provide insight into species that may need continued monitoring or directed management in the future.


When is the next BioBlitz?2017-12-06T15:47:58-07:00

Save Mount Diablo’s BioBlitz is held annually. The date for the next upcoming BioBlitz is to be decided.


Where is BioBlitz held?2017-12-06T15:47:58-07:00

Each year a new, ecologically rich location is chosen to be the site of the survey. It has been held at several of Save Mount Diablo’s protected properties, such as Curry Canyon Ranch, Wright Canyon, and Viera-North Peak, as well as in the Marsh Creek State Historic Park and Marsh Creek Reservoir, among others.

Who can attend Save Mount Diablo’s BioBlitz?2017-12-06T15:47:58-07:00

Expert naturalists and professional scientists are invited to participate each year. This event is invitation-only and is not currently open to the general public.

2018 BioBlitz Survey Results

Plants & Fungi
Amphibians & Reptiles
Total Species
804, 2019

Take the City Nature Challenge!

By |April 8th, 2019|Categories: Announcements, Blog, Community Conservation, Science & Research|Tags: , , , , , , , , , , , , , |

Happy spring! Gather your family, friends, and CalNat cohort and contribute your iNaturalist observation skills to your local community organizations and help collect data for science! April 26-29 City Nature Challenge: The City Nature Challenge began as a nature-observation competition between the San Francisco Bay Area and Los Angeles County in 2016, organized around simple charge: “which city can find the most nature?” Since then, the competition has expanded rapidly, and this year more than 120 cities will participate worldwide! This is an exciting opportunity for California Naturalist alumni to use their skills with iNaturalist, get together, and get involved in a global effort. Volunteer or attend an organized iNaturalist training, bioblitz, an ID party post-challenge, or simply make observations on your own April 26-29. Read the iNaturalist News for each project below for links [...]

1504, 2018

Bioblitz 2018: Exploring Arroyo Del Cerro

By |April 15th, 2018|Categories: Blog, Plants & Animals, Science & Research|Tags: , , , , |

This year’s Bioblitz was the most highly attended SMD Bioblitz since 2007, with seventy-five biologists and expert naturalists compared to the usual thirty to forty naturalists of years past. Participants came from LSA, Nomad Ecology, Swaim Biological, UC Davis, UC Berkeley, the California Academy of Sciences, and the California Native Plant Society, among others, and donated their time over the weekend. Arroyo Del Cerro is home to the federally listed California red-legged frog and “has the potential for California tiger salamander,” said Malcolm Sproul. Other species were spotted as well, including the endemic Contra Costa manzanita. (Endemic means this species of manzanita only occurs in the area.) In total, 419 species were found, a high number that reflects the diverse habitat on the land.

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