Posts Tagged ‘wildlife linkages’
Want to learn more about what’s happening around the Oracle Road wildlife crossings? Check out this recent presentation given by our Conservation Science Director Jessica Moreno:
You can also view a pdf of the presentation HERE.
by Jessica Moreno, Conservation Science Director
The last time I took a stroll down Big Wash, which runs along the west side of Oracle Road, the chill air pressed against my face mask but still managed to carry the smell of triangle leaf bursage and creosote. Gambel’s quail scurried away with their bustling chip-chip-chip alarm call. Dry for most of the year in that characteristic way our desert washes are, Big Wash has served as a connection for animals moving back and forth between the Cañada del Oro Wash and open space north of Rancho Vistoso. It has always been an important wildlife movement area, a key feature in a linkage connecting the Tortolita and Catalina mountains, and now, with two wildlife crossings in place and wildlife monitoring efforts nearing a decade milestone, we are learning more every day about the habits and movements of animals that often remain just out of sight.
Five year ago, when the wildlife bridge and underpass were built on SR77, the red ribbon was cut, the first critter crossed, and we celebrated. But the work wasn’t quite over. In addition to wildlife monitoring, Phase II of the project was to finish placing the last sections of wildlife funnel fencing. Wildlife fencing is an essential part of every successful wildlife crossing and is a vital component of this project to both effectively reduce wildlife-vehicle collisions and maintain a connected landscape for wildlife populations and gene flow. But a few jurisdictional issues and challenges to fencing placement threatened to hold up the whole project, so the decision was made to complete the difficult pieces after the crossing structures were done. Arizona Game and Fish Department’s roadkill surveys confirmed hotpots associated with these fencing gaps. It was a problem, but addressing it had to be done right.
One of these fencing gaps was on either side of the wildlife underpass, at the Rancho Vistoso neighborhood of Vista Mirabella. We placed wildlife cameras to monitor the gaps and reached out to the residents and the HOA to help solve the problem. The solution, made possible thanks to the leadership of the Town of Oro Valley and the wise suggestion of one of the residents, is an elegant one. And it may very well be the first of its kind for wildlife exclusion: wildlife fencing connected to the sound wall will close the gaps at the north and south ends of the neighborhood, while specially designed automatic gates will secure the neighborhood entrances.
This is a unique circumstance since these are public streets and the gates, which are designed like a gated community entrance, will open to any approaching vehicle. They are planned to remain open during high volume traffic hours and close at night. The Regional Transportation Authority is covering the cost out of remaining funds from the original crossing construction budget, including re-vegetation and projected maintenance, and Oro Valley is taking responsibility to maintain the gates into the future.
After four years of outreach and problem solving as a community, we hope that construction on this final piece of the puzzle will begin this summer. There are still details to figure out, but light is at the end of the tunnel and the end result, I think, is something everyone can be proud to have taken part in.
A big thanks to Coalition volunteers Pat and Henry Miller for their help in monitoring the fencing gaps and their overall involvement in this project! And thank you to the Regional Transportation Authority, Pima County, the Town of Oro Valley, and the Arizona Game and Fish Department for your shared persistence in this project.
More information about this project can be found in a Power Point presentation recently created by the RTA and the Town of Oro Valley.
September 4, 2020
Jessica Moreno, Jessica.Moreno@sonorandesert.
Carolyn Campbell, Carolyn.Campbell@
During Pandemic, Community Scientists Adapt to Save the Desert
Tucson, AZ – The Coalition for Sonoran Desert Protection is celebrating their Volunteer Appreciation Week on September 7-12, 2020, this year virtually. The nonprofit organization made swift changes to accommodate remote work, shutdowns, and social distancing in the last six months since the pandemic hit, in an effort to reduce negative impacts on volunteers and support their ability to do science. Despite current challenges, the Coalition’s community scientist volunteers have kept up their enthusiasm to protect the Sonoran Desert.
“It wasn’t long ago that we had volunteers shoulder to shoulder together with 400 students for Critter Cam Field Day in Catalina State Park last March. Things have changed a lot since then,” says Jessica Moreno, the Coalition’s Conservation Science Director. “But I’m amazed at the participation and community spirit volunteers have shown during this time.”
The Coalition is an alliance of 30 member groups representing over 30,000 members, and has a small staff of four, with a mission to protect the biodiversity of the Sonoran Desert in southern Arizona through science-based advocacy, education, and collaboration. Their successes in protecting open space and advocating for wildlife crossings is largely due to their grassroots advocacy approach and the more than 60 active volunteers helping behind the scenes. Volunteers check wildlife cameras, sort wildlife photos, conduct roadkill surveys, help with outreach, and more.
New volunteers have joined since the pandemic began and, like college student Andres Martinez, are signing up family members to join them in the field, helping keep field teams within their own “social bubbles.” Other volunteers, like Patrick McGowan and Butch Farabee, are wearing masks and keeping social distance while they hike to check wildlife cameras as “Desert Monitors.” Some take their spouses along, or alternate field days with teammates. Staff deliver batteries and other field supplies on volunteer’s porches, rather than having people visit the office.
Jane “Middy” Henke is a “Desert Identifier” volunteer with the Coalition, who used to come into the office every Tuesday to sort and identify animals photographed by wildlife cameras. The Coalition changed over to a new database system so volunteers could work from home, with optional weekly virtual meeting hours to work together. “Now we can review the photos from our home computers to assign the species and number of animals we observe,” says Henke. “The current challenge for me is working out which type of skunk I may be seeing in a night photo, and maybe puzzling as to whether the nose appearing in the corner of a picture is that of a mule deer, or if it belongs to a white-tail deer!”
Volunteer Appreciation Week, from September 7 to September 12, was created as a virtual celebration to replace events canceled last April. “We want to recognize the significant impact our volunteers make, and thank them for their commitment as we shift procedures to address the effect the pandemic is having on them, and on their work doing wildlife studies,” says Executive Director Carolyn Campbell. “They are the backbone of our work.”
“More than ever right now I think people are looking for empowering and restorative things to do, ways to make a difference, and ways to connect,” says Moreno. “What we are seeing is really hopeful.”
For print-quality images, please contact Jessica Moreno at Jessica.Moreno@sonorandesert.org.
Did you know that there are five wildlife underpasses that traverse Tangerine Road? These wildlife underpasses were finished in 2018 and the Arizona Game and Fish Department (AGFD) is now in the middle of a post-construction monitoring study of the crossings. In May 2020, AGFD released its latest monitoring progress report. We’re happy to report there were some very encouraging data and findings!
According to the AGFD report:
Data has been analyzed to April 7th, 2020. A combined total of 5,996 crossings by 23 wildlife species have been recorded across all 5 structures. Coyote, javelina, gambel’s quail, and bobcat constitute the most commonly recorded species with 3,002, 1,695, 482, and 403 crossings respectively, representing 93% of all documented crossings. Crossings of note include a gila monster at one underpass in April 2019, and a mountain lion at a different underpass in June 2019.
A total of 40 species have been detected across the five structures to date. The greatest diversity has been observed at underpass #2 where 29 species have been recorded. 16 species have been detected at underpass #1, which is the smallest monitored structure.
[Note: a species is “detected” when it is observed near the crossing structure. This is a different data point than documenting that a species successfully crossed through the structure.]
The full AGFD monitoring report can be found HERE.
Over the last year or so, we have expanded our work protecting Sonoran Desert wildlife linkages to the Rincon-Santa Rita-Whetstone Mountains wildlife linkage that is fragmented by Interstate 10 east of Tucson. 40 wildlife cameras are now collecting data in this wildlife linkage thanks to the amazing help of our volunteers and community partners!
A few updates to share:
*With our Desert Identifier volunteers that sort our wildlife camera photos currently on hiatus due to the Covid-19 pandemic, we have a backlog of photos waiting to be sorted at a future date. Jessica Moreno, our Conservation Science Director, is currently transitioning our sorting software and database to a remote platform. This will allow volunteers to access and sort photos safely from their homes! We are excited about this development and will let you know when the new system is up and running.
*So far, with the photos we have been able to analyze, we have photos of 11 different mammal species plus turkeys. This includes coyote, two species of skunk, fox, bobcat, bats, badger, mule deer, white-tailed deer, javelina, and opossum. See photos below for some of this amazing wildlife!
*This data is being used to develop a funding proposal with our community partners for the Regional Transportation Authority Wildlife Linkages Working Group. The proposal will be requesting funds to install wildlife fencing and complete culvert enhancements to make this wildlife linkage area safer for both wildlife and people.
Thank you for supporting the protection of Sonoran Desert wildlife linkages!
Arizona Game and Fish Department (AGFD) just released the latest and greatest monitoring data from the Oracle Road wildlife overpass and underpass. This represents FOUR FULL YEARS of monitoring these wildlife crossings since construction finished in March 2016.
Some notable data and results include:
- 26 different species have been observed using the crossings, including 11 species at the overpass and 25 species at the underpass.
- Over 10,000 wildlife crossings have been documented by AGFD cameras – 10,843 to be exact. These crossings are fairly evenly split between both structures, with 5,490 crossings at the overpass and 5,353 at the underpass.
- Over 98% of the crossings are by four species: mule deer, javelina, bobcat, and coyote.
- Total crossings at each structure have increased year upon year since construction finished. This means each year more and more wildlife are using these wildlife crossings.
For more results, you can read the full monitoring report HERE.
To learn more about why these crossings were built, how they were funded, and more, head over to the following webpages:
- Oracle Road Wildlife Crossings Overview
- Wildlife Results: It Works!
- The Big Picture: Tucson-Tortolita-Santa Catalina Mountains Wildlife Linkage
- Oracle Road Wildlife Crossings: Frequently Asked Questions
Thanks to a new partnership with volunteer, welder, and ecology student Raynor Vandeven, there are now four wildlife cameras out in the field with professional photography equipment capturing images of Sonoran Desert wildlife. These cameras are located in an area along the proposed I-11 route, in the Tucson Mountains, near the Oracle Road wildlife crossings, and in the I-10 East wildlife linkage area.
We are so grateful to Raynor for his willingness to share these images with the Coalition and can’t wait to start sharing more of them with you in the weeks and months ahead!
(Note: the photos below are examples of Raynor’s wildlife photography and were not taken in the locations described above. )
The Oracle Road wildlife crossings were recently featured on TV station FOX10’s Drone Zone segment in Phoenix. Check out this 3+ minute segment to see some amazing drone footage of both the Oracle Road wildlife underpass and overpass, along with a great interview of our partner Jeff Gagnon with the Arizona Game and Fish Department (click on the image/link below to access the full TV segment).
Good news for conservation in Marana!
On December 10, 2019, the Marana Town Council approved the new draft Marana General Plan with a few major changes we requested. This includes 1) solidifying the long-term protection of the Tortolita Preserve and 2) removing a “Special Planning Area” from lands southwest of the Tortolita Preserve so these lands will remain low density if they are ever developed.
Thank you to all the community members that showed up and voiced their concerns about these issues over the last couple months, including the newly formed Tortolita Alliance! Our voices can make a difference!
If you’d like more information, you can read our full comment letter that we submitted to the Marana Town Council on December 9, 2019 and our previous comment letter submitted to the Marana Planning & Zoning Commission in September 2019. The full draft Marana General Plan is available on the Make Marana 2020 website.
What’s next for the Marana General Plan? Marana voters will get to vote on this new General Plan in August.
The short answer from our Conservation Science Director Jessica Moreno is:
I recommend checking out the reviews and the beginner’s buyers guide found at www.trailcampro.com. With new models coming on the market all the time, this is a great resource for up to date recommendations and tips. You get what you pay for, so I don’t recommend anything worth less than $100. To minimize animal disturbance, choose an infrared/IR camera over white flash.
For more information, check out Jessica’s longer article in the Desert Leaf, “Wildlife (caught) on camera” which gives more details on wildlife cameras, the different ways they are used, some rules and regulations to think about depending on where you’re placing them, and what to think about when buying one.
If you do end up buying a camera and get some interesting pictures of Sonoran Desert wildlife, we’d love to see them!
Note: Another fun resource is the Backyard Wildlife of the Southwest Facebook page where wildlife enthusiasts from around the Southwest regularly post photos of wildlife taken with their wildlife cameras and regular cameras.