Field Notes

Saguaro Census Survey: 3-mile Hike January 11th @ Saguaro West

January 11, 2020

Join Sky Island Alliance in helping Saguaro National Park with their 2020 saguaro census! This will be a longer hike in Saguaro West Please Register on our Eventbrite Page About the Event: Saguaro National Park conducts a saguaro census every 10 years using citizen science. This effort is to help determine the health and vitality…
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Saguaro Census Survey: 1-mile Hike January 10th @ Saguaro West

January 10, 2020

Join Sky Island Alliance in helping Saguaro National Park with their 2020 saguaro census! This will be a shorter hike in Saguaro West Please Register on our Eventbrite Page About the Event: Saguaro National Park conducts a saguaro census every 10 years using citizen science. This effort is to help determine the health and vitality…
Read more »

Saguaro Census Survey: 1-mile Hike December 10th @ Saguaro East

December 10, 2019

Join Sky Island Alliance in helping Saguaro National Park with their 2020 saguaro census! This will be a shorter hike in Saguaro East Please Register on our Eventbrite Page About the Event: Saguaro National Park conducts a saguaro census every 10 years using citizen science. This effort is to help determine the health and vitality…
Read more »

Saguaro Census Survey: 3-mile Hike December 7th @ Saguaro East

December 7, 2019

Join Sky Island Alliance in helping Saguaro National Park with their 2020 saguaro census! This will be a longer hike in Saguaro East Please Register on our Eventbrite Page About the Event: Saguaro National Park conducts a saguaro census every 10 years using citizen science. This effort is to help determine the health and vitality…
Read more »

Hardworking volunteers removed vinca from Aravaipa Canyon!

November 14, 2019

A huge thank you to the volunteers who came with us to the Aravaipa Canyon Preserve this past weekend to help remove invasive periwinkle (Vinca major) from the canyon.  Our small, but hard working group worked in two parts of the Aravaipa preserve. Our first location was part of an ongoing study to test what…
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Tracking Saguaros—75 Years of Change in the Cactus Forest

November 11, 2019

The cactus forest at Saguaro National Park is changing. In 1941, concerned park researchers established 6 plots containing saguaro (Carnegiea gigantea) in the Rincon Mountain District to track park populations of the iconic giant cactus over time. I can imagine the mounting concern that park staff shared in the 1940s as they witnessed an increasing…
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Vinca in Aravaipa Canyon

November 7, 2019

Periwinkle (Vinca major) Greater periwinkle (Vinca major) is a flowering vine native to the Mediterranean and is popular in homes and gardens for its attractive purple flowers. While it looks nice in your backyard, vinca is an aggressive invasive species if it’s accidentally introduced into the right areas.  In Arizona, vinca spread from homes and…
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Call for Volunteers- 2020 Saguaro Census

October 18, 2019

Join Sky Island Alliance in helping Saguaro National Park with their 2020 saguaro census!  Saguaro National Park conducts their saguaro census every 10 years using citizen science. This effort is to help determine the health and vitality of the saguaro population. Sky Island Alliance is organizing 4 volunteer surveys this winter to help with their…
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The Success of National Public Lands Day!

October 1, 2019

Fifteen hard working Sky Island Alliance volunteers celebrated National Public Lands Day (NPLD) on Saturday. They helped remove fountain grass and other invasive plants from the Bear Canyon and Sabino Canyon Recreation Area. In total we removed more than 35 bags of fountain grass and invasive annuals. Thank you to everyone who came out and…
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Volunteer Appreciation Party-Friday, April 12

April 12, 2019

Join us as we celebrate YOU, our amazing volunteers!