FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2028575087> ?p ?o ?g. }

• W2028575087 abstract "We present a two‐criteria inverse modeling approach to analyze the effects of seasonal drought on ecosystem gas exchange at three Mediterranean sites. The three sites include two nearly monospecific Quercus ilex L. forests, one on karstic limestone (Puéchabon), the other on fluvial sand with access to groundwater (Castelporziano), and a typical multispecies shrubland on limestone (Arca di Noè). A canopy gas exchange model Process Pixel Net Ecosystem Exchange (PROXEL NEE ), which contains the Farquhar photosynthesis model coupled to stomatal conductance via the Ball‐Berry model, was inverted in order to estimate the seasonal time course of canopy parameters from hourly values of ecosystem gross carbon uptake and transpiration. It was shown that an inverse estimation of leaf‐level parameters was impossible when optimizing against ecosystem H 2 O or CO 2 fluxes alone (unidentifiable parameters). In contrast, a criterion that constrained the optimization against both H 2 O and CO 2 fluxes yielded stable estimates of leaf‐level parameters. Two separate model inversions were implemented to test two alternative hypotheses about the response to drought: a reduction in active leaf area as a result of patchy stomatal closure or a change in photosynthetic capacities. In contrast to a previously tested hypothesis of classical (uniform) stomatal control, both hypotheses were equally able to describe the seasonality of carbon uptake and transpiration on all three sites, with a decline during the drought and recovery after autumn rainfall. Large reductions of up to 80%, in either active leaf area or photosynthetic capacities, were necessary to describe the observed carbon and water fluxes at the end of the drought period. With a threshold‐type relationship, soil water content was an excellent predictor of these changes. With the drought‐dependent parameter changes included, the canopy model explains 80–90% of the variance of hourly gross CO 2 uptake (root mean squared error (RMSE): 1.1–2.6 μmol m −2 s −1 ) and 70–80% of the variance of hourly transpiration (RMSE: 0.02–0.03 mm h −1 ) at all sites. In addition to drought effects, changes in leaf photosynthetic activity not related to water availability, i.e., high spring activity, were detected through the inverse modeling approach. Moreover, our study exemplifies a kind of multiconstraint inverse modeling that can be profitably used for calibrating ecosystem models that are meant for global applications with ecosystem flux data." @default.
• W2028575087 created "2016-06-24" @default.
• W2028575087 creator A5014761482 @default.
• W2028575087 creator A5016502954 @default.
• W2028575087 creator A5036241655 @default.
• W2028575087 creator A5036952204 @default.
• W2028575087 creator A5038878276 @default.
• W2028575087 creator A5050311972 @default.
• W2028575087 creator A5054668750 @default.
• W2028575087 creator A5071721504 @default.
• W2028575087 creator A5075833867 @default.
• W2028575087 creator A5090363555 @default.
• W2028575087 date "2003-12-09" @default.
• W2028575087 modified "2023-10-15" @default.
• W2028575087 title "Inverse modeling of seasonal drought effects on canopy CO₂/H₂O exchange in three Mediterranean ecosystems" @default.
• W2028575087 cites W1209269186 @default.
• W2028575087 cites W121481402 @default.
• W2028575087 cites W170478430 @default.
• W2028575087 cites W1962518632 @default.
• W2028575087 cites W1966184532 @default.
• W2028575087 cites W1987297716 @default.
• W2028575087 cites W1996170251 @default.
• W2028575087 cites W2009428486 @default.
• W2028575087 cites W2013198163 @default.
• W2028575087 cites W2022257873 @default.
• W2028575087 cites W2038698475 @default.
• W2028575087 cites W2042284737 @default.
• W2028575087 cites W2043205357 @default.
• W2028575087 cites W2048077074 @default.
• W2028575087 cites W2056991813 @default.
• W2028575087 cites W2061021739 @default.
• W2028575087 cites W2064111318 @default.
• W2028575087 cites W2084718815 @default.
• W2028575087 cites W2085556203 @default.
• W2028575087 cites W2088520642 @default.
• W2028575087 cites W2096466966 @default.
• W2028575087 cites W2102351576 @default.
• W2028575087 cites W2102618416 @default.
• W2028575087 cites W2104114488 @default.
• W2028575087 cites W2109382956 @default.
• W2028575087 cites W2109446104 @default.
• W2028575087 cites W2112614814 @default.
• W2028575087 cites W2116291451 @default.
• W2028575087 cites W2117324426 @default.
• W2028575087 cites W2119619836 @default.
• W2028575087 cites W2133147181 @default.
• W2028575087 cites W2139377704 @default.
• W2028575087 cites W2157003362 @default.
• W2028575087 cites W2162604832 @default.
• W2028575087 cites W2165309292 @default.
• W2028575087 cites W2166134628 @default.
• W2028575087 cites W2168619022 @default.
• W2028575087 cites W2169205685 @default.
• W2028575087 cites W2248018083 @default.
• W2028575087 cites W2315559908 @default.
• W2028575087 cites W2324989254 @default.
• W2028575087 cites W4211130199 @default.
• W2028575087 doi "https://doi.org/10.1029/2003jd003430" @default.
• W2028575087 hasPublicationYear "2003" @default.
• W2028575087 type Work @default.
• W2028575087 sameAs 2028575087 @default.
• W2028575087 citedByCount "146" @default.
• W2028575087 countsByYear W20285750872012 @default.
• W2028575087 countsByYear W20285750872013 @default.
• W2028575087 countsByYear W20285750872014 @default.
• W2028575087 countsByYear W20285750872015 @default.
• W2028575087 countsByYear W20285750872016 @default.
• W2028575087 countsByYear W20285750872017 @default.
• W2028575087 countsByYear W20285750872018 @default.
• W2028575087 countsByYear W20285750872019 @default.
• W2028575087 countsByYear W20285750872020 @default.
• W2028575087 countsByYear W20285750872021 @default.
• W2028575087 countsByYear W20285750872022 @default.
• W2028575087 countsByYear W20285750872023 @default.
• W2028575087 crossrefType "journal-article" @default.
• W2028575087 hasAuthorship W2028575087A5014761482 @default.
• W2028575087 hasAuthorship W2028575087A5016502954 @default.
• W2028575087 hasAuthorship W2028575087A5036241655 @default.
• W2028575087 hasAuthorship W2028575087A5036952204 @default.
• W2028575087 hasAuthorship W2028575087A5038878276 @default.
• W2028575087 hasAuthorship W2028575087A5050311972 @default.
• W2028575087 hasAuthorship W2028575087A5054668750 @default.
• W2028575087 hasAuthorship W2028575087A5071721504 @default.
• W2028575087 hasAuthorship W2028575087A5075833867 @default.
• W2028575087 hasAuthorship W2028575087A5090363555 @default.
• W2028575087 hasBestOaLocation W20285750872 @default.
• W2028575087 hasConcept C101000010 @default.
• W2028575087 hasConcept C110872660 @default.
• W2028575087 hasConcept C125403950 @default.
• W2028575087 hasConcept C127313418 @default.
• W2028575087 hasConcept C14331020 @default.
• W2028575087 hasConcept C157517311 @default.
• W2028575087 hasConcept C183688256 @default.
• W2028575087 hasConcept C187320778 @default.
• W2028575087 hasConcept C18903297 @default.
• W2028575087 hasConcept C25989453 @default.
• W2028575087 hasConcept C2780169741 @default.
• W2028575087 hasConcept C2781045423 @default.
• W2028575087 hasConcept C39432304 @default.
• W2028575087 hasConcept C4646841 @default.

• next