Presentation Title

Investigating the Spatial Effects of Severe Drought on a California Newt Population

Start Date

November 2016

End Date

November 2016

Location

Surge 171

Type of Presentation

Oral Talk

Abstract

The severe drought in Southern California is causing population declines of the California newt (Taricha torosa), an amphibian that is native to the Santa Monica Mountain stream system. The current drought is limiting the space available for newt oviposition because newts prefer to lay their eggs in deep, slow-moving pools of water. We created a mathematical model to investigate the effects of persistent drought on a newt population in Cold Creek, a pristine creek in the Santa Monica Mountain stream system. We built from a previous discrete model that describes California newt life-stages and expanded it to create a spatial compartmental model. We created a transition probability matrix to predict changes in stream segments due to persistent drought. With our model, we predict continued stream drying which will result in further newt population declines in Cold Creek.

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Nov 12th, 3:45 PM Nov 12th, 4:00 PM

Investigating the Spatial Effects of Severe Drought on a California Newt Population

Surge 171

The severe drought in Southern California is causing population declines of the California newt (Taricha torosa), an amphibian that is native to the Santa Monica Mountain stream system. The current drought is limiting the space available for newt oviposition because newts prefer to lay their eggs in deep, slow-moving pools of water. We created a mathematical model to investigate the effects of persistent drought on a newt population in Cold Creek, a pristine creek in the Santa Monica Mountain stream system. We built from a previous discrete model that describes California newt life-stages and expanded it to create a spatial compartmental model. We created a transition probability matrix to predict changes in stream segments due to persistent drought. With our model, we predict continued stream drying which will result in further newt population declines in Cold Creek.