Hopland Research and Extension Center
University of California
Hopland Research and Extension Center

Happenings at Hopland REC

Coast Live Oaks awaken to spring!

HREC is blessed with location as the Center is located at a "hub" of climate zones and maritime influence and soil and elevation differences.   As a result, HREC has over a dozen species of oaks that can be found on on the Center.  Here you see a Coast Live Oak (Quercus agrifolia) with fresh new leaves forming and catkins ready to bloom.   Coast Live Oaks are only found at scattered locations at the lower elevations on the west side of the Center.

Posted on Saturday, April 23, 2011 at 7:19 AM
  • Author: Robert J Keiffer

Springtime welcomes hatching Killdeer at HREC!

Killdeer are the most common species of shorebird that utilize HREC, and the only shorebird species that nests here.  This nest was placed by the parent killdeer in open gravel next to the HREC greenhouse, and was staked by HREC staff to prevent people from walking or driving over the nest.  Two days ago the eggs hatched, and yesterday the "mom" led the precocial chicks, four of them, away from the nest site and down to Parson's Creek gravel bar.

Posted on Friday, April 22, 2011 at 10:47 AM
  • Author: Robert J Keiffer

Sheep roam freely on University Road

The Hopland Research & Extension Center is accessed by University Road which is a county road.  It is one of the last Mendocino County roads with a livestock "cattleguard" ( metal grate-like structure at ground level that prevents livestock from crossing without the need for a gate) maintained by the county.   At times when HREC has sheep grazing in Vassar Pasture, visitors get the thrill of seeing sheep on the road ... literally!

Posted on Thursday, April 21, 2011 at 8:32 AM
  • Author: Robert J Keiffer

HREC Greenhouse retrofit makes it aphid-proof.

Beginning in 2010, a group of researchers began assessing an individual's risk of acquiring an infectious disease ("disease risk") and whether or not that risk can be determined by a handful of ecological traits of the host individual.  They are also looking to see if other host species that are potential sources of infection play a role ("community context").  The experiments utilize aphids and grasses and a certain grass-specific virus as the model.  The HREC greenhouse has been retrofitted to be aphid-proof" to allow the propagation of "virus-free" grasses.

Posted on Wednesday, April 20, 2011 at 11:11 AM
  • Author: Robert J Keiffer

33 Years of Rain Data from HREC!

In 1977 the US State Agricultural Experiment Stations (SAES) began a nationwide project to monitor atmospheric deposition and study its effects on the environment.  This project is titled the National Atmospheric Deposition Program (NADP). The NADP precipitation chemistry network, which began in 1978, has the goal of providing data on the amounts, trends, and geographic distributions of acids, nutrients, and base cations in rainfall.  NADP site CA45, located at HREC, has collected some of the cleanest rain water in the nation due to the fact that most moisture in our storms is derived from moisture over the Pacific Ocean (not many industrial plants out there!).

Posted on Tuesday, April 19, 2011 at 8:14 AM
  • Author: Robert J Keiffer

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