There are lots of nature reserves in the world, including several administered by universities. Of those, the University of California\u2019s Natural Reserve System is the largest.<\/p>\n
With 39 sites covering more than 756,000 acres, research underway there hits on every type of major ecosystem in the state. These include coastal tidepools, inland deserts, lush wetlands and the Sierra Nevada mountains, among others.<\/p>\n
If you haven\u2019t heard of California\u2019s Natural Reserve System, you\u2019re not alone. Until recently, we had no idea that it even existed, despite the state\u2019s excellent track record with various sensor networks for monitoring wildfires, hydrology and more.<\/p>\n
The system was first established 51 years ago by scientists with a vision for protecting some of California\u2019s lands and preserving them for education, outreach and research.<\/p>\n
\u201cIt started when one of the researchers went back to a site he was working at and found it had been paved over,\u201d said Becca Fenwick, research program director at the Institute for the Study of Ecological and Evolutionary Climate Impacts (ISEECI), housed at the University of California. \u201cHe was obviously disturbed by that. I believe there were seven sites in 1965, and the network has been growing since then.\u201d<\/p>\n
With nearly 40 sites these days, the Natural Reserve System has expanded into an impressive array boasting pretty much every kind of sensor imaginable. But getting to that size and staying there are two different things.<\/p>\n
\u201cMaintaining our sites over a wide variety of ecosystems is tough. One of our weather stations in the eastern mountains, our wiring keeps getting eaten by bears,\u201d said Fenwick. \u201cSo things work in the lab, but once you put them outside there are things like bears. Or wasps that decide your camera is the perfect place to put a nest.\u201d<\/p>\n
Fenwick says that the most popular sensors deployed across the sites are multi-parameter weather stations. In addition to those, there are sensors for tracking solar radiation, soil temperature, soil moisture and even leaf wetness in some areas. In others, there are fuel moisture sensors that help to gauge the risk of forest fires starting.<\/p>\n
![\"natural](\"https:\/\/www.fondriest.com\/news\/wp-content\/uploads\/2016\/11\/calinrs_install.jpg\")
Researchers from University of California, Santa Cruz, and University of Northern Arizona deploy sensing instruments at Hart Prairie Preserve in Arizona. (Credit: Anthony Ambrose \/ University of California, Berkeley)<\/p><\/div>\n
Fenwick says that the reserve system is looking to expand more into the future, with sights set on building infrastructure to support PhenoCams. The cameras gather images that could help researchers see how ecosystems are changing over time and, from there, with climate change.<\/p>\n
\u201cWe\u2019re installing additional sensors to complement the weather stations and PhenoCams, measuring air temperature at 10 centimeters, 1 and 3 meters,\u201d said Fenwick, noting that sensors for soil moisture are also being added. She says the developing PhenoCam network will help scientists to better know when trees bloom and later lose their leaves. \u201cThe fuel moisture sensor looks very much like a dowel rod you\u2019d get from a hardware store. I believe there\u2019s a wire that runs through it and measures differences in the moisture content of the dowel as it changes, as you’d see on the ground on twigs or\u00a0in the duff.\u201d<\/p>\n
Data from all the new sensors will add more resolution to western regional climate models, she says, which feed into scientific papers and media reports. But sites throughout the Natural Reserve System have already uncovered plenty of interesting insights.<\/p>\n
Fenwick can\u2019t comment on specific findings, but has seen a few trends taking shape over time.<\/p>\n
\u201cFor the last three to four years, there\u2019s been a significant decline to snowpack in the White Mountains and Sierra Nevadas. It\u2019s tied closely to drought,\u201d said Fenwick. \u201cWe\u2019re seeing about 60 million\u00a0mixed pine trees dead up to the 5,000-foot mark in the Sierra Nevada. It\u2019s a combination of the lack of precipitation stressing out the trees and the already existing pine beetles.\u201d<\/p>\n
In Colorado and other areas across the West, the native beetles have likewise taken advantage of trees weakened by drought. Conifers that would have normally been able to expel them with excess sap simply don\u2019t have the moisture needed to mount such a charge. And it doesn\u2019t take long for the beetles, which prefer to eat around trees, to gird them enough that they can no longer survive.<\/p>\n
Hopes are that the Natural Reserve System can continue to expand and provide more interesting insights in the future. Fenwick notes work currently underway to deploy a new sensor network as part of the University of Northern Arizona\u2019s Southwest Experimental Garden Array.<\/p>\n
Data from the whole system will continue to be free and available to those interested.<\/p>\n
\u201cIf any researcher who\u2019s doing research on our reserves needs info for a particular year, our climate data are freely available,\u201d said Fenwick. \u201cThey\u2019re also available to the public as well.\u201d<\/p>\n
Top image:\u00a0Researchers from University of California, Santa Cruz, and University of Northern Arizona deploy sensing instruments at Hart Prairie Preserve in Arizona. (Credit: Anthony Ambrose \/ University of California, Berkeley)<\/span><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"University of California\u2019s Natural Reserve System is the largest of its kind in the world, capturing data at 39 sites to help climate studies and more.<\/p>\n","protected":false},"author":13,"featured_media":27285,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,5],"tags":[157,60,109,255],"class_list":["post-27289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-earth-atmosphere","category-featured-articles","tag-climate-change","tag-featured","tag-news-ticker","tag-university-of-california"],"remote_post_permalink":false,"remote_post_featured_image":false,"yoast_head":"\n
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