Title

An Integral Projection Model for Bluebunch Wheatgrass

Presenter

Heather Gaya

Abstract

Bluebunch wheatgrass (Pseudoroegneria spicata), a local native bunchgrass species, has experienced significant decline over the past century. Historic overgrazing, competition with invasive species such as cheatgrass, and increasingly dry soil conditions may be responsible for this major decline. I created integral projection models of a bluebunch population in the Wallula Gap to analyze the long term behavior of this population and identify demographic patterns in bluebunch wheatgrass that can lead to the population’s survival or decline. Through the analysis of these models, conservation can efficiently target precise size stages of the bluebunch wheatgrass life cycle to maximize survival and reduce the cost of bluebunch wheatgrass restoration efforts.

Faculty Sponsor

Tim Parker

Sponsor Department/Programs

Biology

Tracks

Plant Life

Location

Science 100

Presentation Type

Oral Presentation

Research Funding Source or OCS Program

Perry Summer Research Award

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Apr 19th, 3:00 PM Apr 19th, 3:15 PM

An Integral Projection Model for Bluebunch Wheatgrass

Science 100

Bluebunch wheatgrass (Pseudoroegneria spicata), a local native bunchgrass species, has experienced significant decline over the past century. Historic overgrazing, competition with invasive species such as cheatgrass, and increasingly dry soil conditions may be responsible for this major decline. I created integral projection models of a bluebunch population in the Wallula Gap to analyze the long term behavior of this population and identify demographic patterns in bluebunch wheatgrass that can lead to the population’s survival or decline. Through the analysis of these models, conservation can efficiently target precise size stages of the bluebunch wheatgrass life cycle to maximize survival and reduce the cost of bluebunch wheatgrass restoration efforts.