Ecophysiology of Mediterranean species

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Ecophysiology of Mediterranean species
L. Serrano1, X. Aranda2, X. Fábregas3, F.X.
Martínez3, A. Terricabras4

• 1. Dept. Enginyeria Agroalimentària i
  Biotecnologia. UPC.
• 2. Dept. Tecnologia Hortícola. IRTA.
• 3. Escola Superior dAgricultura de Barcelona.
• 4. Àrea Metropolitana de Barcelona.

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Seasonal variations in the ecophysiology and
pheno-morphology of Mediterranean species
adjustment capacity to increasing drought and
CO2.
MCYT REN 2002-00633/GLO.
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OBJECTIVES

• To study the seasonal dynamics in the
  physiological and morphological responses of
  Mediterranean species.
• To study the seasonal responses to water
  availability.
• To study the responses to increased CO2 under
  drought.

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

• Plasticity in functional traits might be linked
  to species adaptive capacity. ( Norberg et al
  2001)

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

Cistus ladanifer
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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

Non-intrusive optical techniques.
Chlorophyll fluorescence Spectral reflectance
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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

PHOTOSYNTHESIS PHOTOCHEMICAL QUENCHING
Chl
HEAT DISSIPATION NON-PHOTOCHEMICAL QUENCHING
(xantophyll cycle)
CHLOROPHYLL FLUORESCENCE
low PAR
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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

PHOTOSYNTHESIS PHOTOCHEMICAL QUENCHING
Chl
HEAT DISSIPATION NON-PHOTOCHEMICAL QUENCHING
(xantophyll cycle)
CHLOROPHYLL FLUORESCENCE
high PAR
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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

Cistus ladanifer
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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

Water
Xantophyll
Chlorophyll

• Ratio indices Rlabs / Rlref
• Normalized indices (Rlref Rlabs) / (Rlref
  Rlabs)

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.
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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

Important traits determining ecosystem function
may be shared by among multiple species long
history of attempts to classify species into
functional groups. (However, difficult because
some traits may be only expressed in one context
or at one life stage)
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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

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Seasonal dynamics in the physiological and
morphological responses of Mediterranean species.

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Up- scaling spectral reflectance and
transmittance
Serrano et al 2000a
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Up-scaling spectral transmittance
Serrano Peñuelas (unpublished data)
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Up-scaling AVIRIS reflectance
Serrano et al 2000b
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Up-scaling AVIRIS reflectance
Serrano et al 2002
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Acknowledgements

• MCYT REN 2002-00633/GLO.
• MCYT Ramon y Cajal program to L. Serrano.
• Àrea Metropolitana de Barcelona to A.
  Terricabras.

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