Microphytobenthos primary production estimated by hyperspectral reflectance

PloS One
Vona MéléderJohann Lavaud

Abstract

The use of remote sensing techniques allows monitoring of photosynthesis at the ecosystem level and improves our knowledge of plant primary productivity. The main objective of the current study was to develop a remote sensing based method to measure microphytobenthos (MPB) primary production from intertidal mudflats. This was achieved by coupling hyperspectral radiometry (reflectance, ρ and second derivative, δδ) and PAM-fluorometry (non-sequential light curves, NSLC) measurements. The latter allowed the estimation of primary production using a light use efficiency parameter (LUE) and electron transport rates (ETR) whereas ρ allowed to estimate pigment composition and optical absorption cross-section (a*). Five MPB species representative of the main growth forms: epipelic (benthic motile), epipsammic (benthic motile and non motile) and tychoplanktonic (temporarily resuspended in the water column) were submitted to increasing light intensities from dark to 1950 μmol photons.m-2.s-1. Different fluorescence patterns were observed for the three growth-forms and were linked to their xanthophyll cycle (de-epoxydation state). After spectral reflectance measurements, a* was retrieved using a radiative transfer model and several radiome...Continue Reading

References

Sep 10, 2005·Photosynthesis Research·Alexander RubanAnne-Lise Etienne
Mar 13, 2010·Photosynthesis Research·Reimund Goss, Torsten Jakob
Nov 12, 2013·Journal of Photochemistry and Photobiology. B, Biology·Vona MéléderLaurent Barillé
Jul 9, 2014·The ISME Journal·Alexandre BarnettJohann Lavaud
Oct 1, 2008·Journal of Phycology·Bruno JesusRupert G Perkins

❮ Previous
Next ❯

Methods Mentioned

BETA
scanning electron microscopy

Software Mentioned

HyMap
DAIS
EnMap
AVIRISng
HySpex
MPBOM Optical
CASI
Hyperion
MPBOM
HypXim

Related Concepts

Related Feeds

Biofilm & Infectious Disease

Biofilm formation is a key virulence factor for a wide range of microorganisms that cause chronic infections.Here is the latest research on biofilm and infectious diseases.