|CWR Presents : Spectral detection of stress-related pigments in Samphires of Western Australia
Wetlands in north-western Australia have significant national and international value since they sustain a large number of endemic Samphire, species growing under saline, waterlogged, and dry conditions.
We investigate the ecophysiological aspects of these succulent species using a combination of spectral measurements, pigment concentrations and environmental variables.
We correlated samphire tissue pigment concentrations with climatic data and determined the relationships between pigments and field spectroradiometer readings for Tecticornia indica, one of the dominant samphire species in WA. Tecticornia plants with visually different colour contained different pigment concentrations and reflected differentially the visible light, in particular at wavelengths between 500 and 700 nm.
The reflectance data obtained by the spectrometry indicated that spectral detection of pigments could be used to identify changes in plant pigments, as well as other changes in vegetation status produced by different stress drivers. This methodology offers a rapid/reliable approach to describe natural ecosystems and evaluate the impact of human activities in marshes and wetlands ecosystems.
Victoria, Completed a PhD in Agronomy Sciences from University of Buenos Aires, Argentina. Her study area is the Ecohydrology of arid zones. Since 2011 I have worked with Dr Erik Veneklaass and Tim Colmer at the School of Plant Biology (UWA) on a project related to vegetation dynamics in areas affected by mining activities in the Pilbara’s region. she has work at different spatial scales, from leaf and plant and plot scale using both glasshouse and field experiments and remote sensing technologies.
PS* This seminar is free and open to the public & no RSVP required.
Victoria A. Marchesini, School of Plant Biology, The University of Western Australia
Blakers Lecture Room, Ground Floor, Mathematics Building, The University of Western Australia
: 6488 7565
Wed, 17 Jul 2013 16:00
Wed, 17 Jul 2013 17:00
Askale Abebe <[email protected]>
Wed, 03 Jul 2013 14:11
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