David Martini

Towards a more reliable GPP estimation: A systematic assessment of using the photochemical reflectance index as a proxy for non-photochemical quenching

Lorenz Hänchen, David Martini, Karolina Sakowska, Mirco Migliavacca et autres

Resolving the global terrestrial CO2 budget remains a pressing challenge with implications for achieving internationally agreed emissions targets. To this end, remote sensing of solar-induced chlorophyll fluorescence (SIF) is rapidly advancing in accurately estimating gross primary productivity (GPP) on a global scale. …

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Biodiversity research requires more rotors and wheels on and above ground, as well as below water

Man Qi, Matthew Gadd, David Martini, Katrina A. S. Davis et autres

Human activities have caused rapid decline in biodiversity, with accelerating species extinction. Simultaneously, recent advancements in artificial intelligence and autonomous systems offer transformative potential for biodiversity research. Unmanned vehicles—such as drones, ground robots, and underwater robots—equipped with high-resolution sensors enhance our ability …

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Modelling analysis confirms the role of NPQ saturation for the divergence of the GPP – SIF relationship during heatwave

David Martini, Mirco Migliavacca, Georg Wohlfahrt

Modelling analysis confirms the role of NPQ saturation for the divergence of the GPP-SIF relationship during heatwave A response to Antala et al. (2025): 'Nonphotochemical quenching does not alter the relationship between sun-induced fluorescence and gross primary production under heatwave' We appreciate …

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Introducing AustroSIF: A compilation of combined passive and active fluorescence data at flux tower sites across Europe; dataset overview and potential applications

David Martini, Karolina Sakowska, Mirco Migliavacca, Tommaso Julitta et autres

Remote sensing of sun-induced fluorescence (SIF) provides a valuable tool to assess vegetation state and productivity at large spatial scales and in an unintrusive way. SIF is the absorbed light re-emitted by chlorophyll pigments in the red to infrared range (650-850 nm). …

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Exploring the feasibility of early stress detection with sun-induced chlorophyll fluorescence from tower to satellite

Grégory Duveiller, Albin Hammerle, Lorenz Hänchen, David Martini et autres

Terrestrial ecosystems are undergoing increasingly frequent periods of stress as the climate is changing. Monitoring ecosystem health efficiently requires global spatial coverage and high temporal resolution, which are assets of satellite-based remote sensing. However, conventional optical remote sensing (RS) approaches offer limited …

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Establishing the Photochemical Reflectance Index (PRI) as a reliable proxy for Non-Photochemical Quenching (NPQ)

Lorenz Hänchen, David Martini, Karolina Sakowska, Mirco Migliavacca et autres

On a global scale, the scientific community is to date unable to close the CO2 budget, with implications for policymakers in regard to limiting global warming to internationally agreed levels. Recently, remote sensing of Solar-Induced Chlorophyll Fluorescence (SIF) has emerged as a …

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Leaf-level coordination principles propagate to the ecosystem scale

Ulisse Gomarasca, Mirco Migliavacca, Jens Kattge, Jacob A. Nelson et autres

Fundamental axes of variation in plant traits result from trade-offs between costs and benefits of resource-use strategies at the leaf scale. However, it is unclear whether similar trade-offs propagate to the ecosystem level. Here, we test whether trait correlation patterns predicted by …

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Leaf-level coordination principles propagate to the ecosystem scale

Ulisse Gomarasca, Mirco Migliavacca, Jens Kattge, Jacob A. Nelson et autres

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Deciphering the factors relating sun-induced fluorescence to photosynthesis and transpiration in space and time

David Martini

Photosynthetic organism slowly transformed Earth from a rocky and bare landscape to a lush, diverse collection of thriving ecosystems. The photosynthetic process also altered the atmosphere by lowering atmospheric CO2 and increasing O2 levels, thus permitting animal life. The synthesis of the …

Evergreen broadleaf greenness and its relationship with leaf flushing, aging, and water fluxes

Yunpeng Luo, Javier Pacheco‐Labrador, Andrew D. Richardson, Bijan Seyednasrollah et autres

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Heatwave breaks down the linearity between sun‐induced fluorescence and gross primary production

David Martini, Karolina Sakowska, Georg Wohlfahrt, Javier Pacheco‐Labrador et autres

Sun-induced fluorescence in the far-red region (SIF) is increasingly used as a remote and proximal-sensing tool capable of tracking vegetation gross primary production (GPP). However, the use of SIF to probe changes in GPP is challenged during extreme climatic events, such as …

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Heatwave breaks down the linearity between sun-induced fluorescence and gross primary production. Reproducible workflow

David Martini, Karolina Sakowska, Georg Wohlfahrt, Javier Pacheco‐Labrador et autres

Dataset for manuscript entitled "Heatwave breaks down the linearity between sun-induced fluorescence and gross primary production" accepted for publication in New Phytologist. The dataset was obtained for the site Majadas del Tietar, Spain, between June/2018 and August/2018. It consists of eddy covariance …

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