10 results on '"Liberati, Dario"'
Search Results
2. Trait‐mediated responses to aridity and experimental drought by springtail communities across Europe.
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Ferrín, Miquel, Márquez, Laura, Petersen, Henning, Salmon, Sandrine, Ponge, Jean‐François, Arnedo, Miquel, Emmett, Bridget, Beier, Claus, Schmidt, Inger K., Tietema, Albert, de Angelis, Paolo, Liberati, Dario, Kovács‐Láng, Edit, Kröel‐Dulay, György, Estiarte, Marc, Bartrons, Mireia, Peñuelas, Josep, and Peguero, Guille
- Subjects
DROUGHTS ,COMMUNITIES ,CLIMATE change forecasts ,HABITATS ,SOIL depth ,SOIL animals ,SPECIES distribution - Abstract
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- Published
- 2023
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3. Trait‐mediated responses to aridity and experimental drought by springtail communities across Europe
- Author
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Ferrín, Miquel, primary, Márquez, Laura, additional, Petersen, Henning, additional, Salmon, Sandrine, additional, Ponge, Jean‐François, additional, Arnedo, Miquel, additional, Emmett, Bridget, additional, Beier, Claus, additional, Schmidt, Inger K., additional, Tietema, Albert, additional, de Angelis, Paolo, additional, Liberati, Dario, additional, Kovács‐Láng, Edit, additional, Kröel‐Dulay, György, additional, Estiarte, Marc, additional, Bartrons, Mireia, additional, Peñuelas, Josep, additional, and Peguero, Guille, additional
- Published
- 2022
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4. The Response of Soil CO2 Efflux to Water Limitation Is Not Merely a Climatic Issue: The Role of Substrate Availability
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de Dato, Giovanbattista, primary, Lagomarsino, Alessandra, additional, Lellei-Kovacs, Eszter, additional, Liberati, Dario, additional, Abou Jaoudé, Renée, additional, Marabottini, Rosita, additional, Stazi, Silvia Rita, additional, Guidolotti, Gabriele, additional, Kovacs-Lang, Edit, additional, Kroel-Dulay, György, additional, and De Angelis, Paolo, additional
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- 2017
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5. Shrubland primary production and soil respiration diverge along European climate gradient
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Reinsch, Sabine, primary, Koller, Eva, additional, Sowerby, Alwyn, additional, de Dato, Giovanbattista, additional, Estiarte, Marc, additional, Guidolotti, Gabriele, additional, Kovács-Láng, Edit, additional, Kröel-Dulay, György, additional, Lellei-Kovács, Eszter, additional, Larsen, Klaus S., additional, Liberati, Dario, additional, Peñuelas, Josep, additional, Ransijn, Johannes, additional, Robinson, David A., additional, Schmidt, Inger K., additional, Smith, Andrew R., additional, Tietema, Albert, additional, Dukes, Jeffrey S., additional, Beier, Claus, additional, and Emmett, Bridget A., additional
- Published
- 2017
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6. Drought adaptation and climate change responses in three garrigue shrub species
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Liberati, Dario and De Angelis, Paolo
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AGR/05 ,Cambiamento climatico ,Photosynthesis limitations ,Dorycnium pentaphyllum ,Helichrysum italicum ,Leaf mass per area ,Cistus monspeliensis ,Photosynthetic capacity ,Garrigue ,Massa fogliare specifica ,Limitazioni alla fotosintesi ,Acclimatazioneall'aerdità ,Climate change ,Dorought acclimatation ,Capacità fotosintetica ,Gariga - Abstract
Allo scopo di studiare l’effetto dell’incremento di temperatura e della riduzione delle precipitazioni su di un ecosistema di gariga dominato da Cistus monspeliensis L. (Cistaceae), Dorycnium pentaphyllum Scop. (Fabaceae) and Helichrysum italicum subsp. microphyllum (Asteraceae) situato nel nord ovest della Sardegna, è stata condotta una manipolazione del microclima che ha incrementato le temperature minime (+0.9 °C, trattamento warming) e ridotto le precipitazioni (-20%, trattamento drought ). Sulle tre specie sono stati monitorati gli scambi gassosi e il potenziale idrico, su C. monspeliensis, specie dominante, anche la capacità fotosintetica, il rapporto Fv/Fm, la morfologia della foglia e del getto e il contenuto in azoto fogliare. H. italicum (specie con apparato radicale superficiale) è risultata la specie più sensibile sia all’aridità naturale sia a quella simulata dal trattamento drought, con la maggiore riduzione dei tassi di fotosintesi durante l’estate e uno scarso recupero in autunno, D. pentaphyllum (specie con apparato radicale profondo) quella più resistente, con la minore depressione estiva dell’assimilazione di CO2 e un completo recupero autunnale. Come H. italicum, C. monspeliensis (specie con apparato radicale superficiale) mostra una forte riduzione della fotosintesi in aridità, spiegata soprattutto da limitazioni stomatiche e da un incremento di LMA, ma anche un veloce recupero autunnale, legato all’espansione della lamina fogliare delle foglie estive ad elevato LMA. In questa specie il trattamento drought ha indotto una acclimatazione della fotosintesi allo stress idrico e un ritardo nel recupero autunnale, mentre il trattamento warming un incremento della capacità fotosintetica, delle dimensioni del getto e delle foglie e del contenuto in azoto fogliare, forse dovuto ad una maggiore mineralizzazione dell’azoto nel suolo. In order to investigate how the forecast temperature increase and rainfall reduction could affect Mediterranean shrubland ecosystems, the adaptions of Cistus monspeliensis L. (Cistaceae), Dorycnium pentaphyllum Scop. (Fabaceae) and Helichrysum italicum subsp. microphyllum (Willd.) (Asteraceae), to the actual Mediterranean climate, as well as their responses to manipulation of minimum temperature (+0.9 °C) and rainfall (- 20 %), were studied from 2009 to 2011 in a garrigue ecosystem, located in the NW of Sardinia . Gas exchange at leaf level and pre-dawn leaf water potential were monitored in the three species. In addition, photosynthetic capacity, maximum quantum yield of PSII, carbon and nitrogen leaf content and morphology at leaf and shoot level were also recorded in C. mospeliensis. The comparison among species, based on photosynthesis and water potential, identified H. italicum (shallow rooted species) as the most sensitive species to the natural and simulated drought, because of the strong reduction of gas exchange rates during drought and the slow recovery in Autumn, and D. pentaphyllum (deep rooted species) as the most resistant one, whit the littlest reduction of photosynthesis rates in summer. As H. italicum, C. monspeliensis (shallow rooted species) showed a strong reduction of CO2 assimilation rates during drought, mainly explained by stomatal limitations and LMA increase, but also a quick recovery in Autumn, connected to the lamina expansion in the high LMA summer leaves. In this species the drought treatment induced photosynthesis acclimation to water stress and a delayed Autumn recovery, while warming treatment an increase of the photosynthetic capacity, leaf nitrogen content and shoot and leaf size, maybe connected to an enhancement of soil nitrogen mineralization rates. Dottorato di ricerca in Ecologia forestale
- Published
- 2012
7. Increased sensitivity to climate change in disturbed ecosystems
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Kröel-Dulay, György, primary, Ransijn, Johannes, additional, Schmidt, Inger Kappel, additional, Beier, Claus, additional, De Angelis, Paolo, additional, de Dato, Giovanbattista, additional, Dukes, Jeffrey S., additional, Emmett, Bridget, additional, Estiarte, Marc, additional, Garadnai, János, additional, Kongstad, Jane, additional, Kovács-Láng, Edit, additional, Larsen, Klaus Steenberg, additional, Liberati, Dario, additional, Ogaya, Romà, additional, Riis-Nielsen, Torben, additional, Smith, Andrew R., additional, Sowerby, Alwyn, additional, Tietema, Albert, additional, and Penuelas, Josep, additional
- Published
- 2015
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8. The Response of Soil CO2 Efflux to Water Limitation Is Not Merely a Climatic Issue: The Role of Substrate Availability.
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de Dato, Giovanbattista, Lagomarsino, Alessandra, Lellei-Kovacs, Eszter, Liberati, Dario, Jaoudé, Renée Abou, Marabottini, Rosita, Stazi, Silvia Rita, Guidolotti, Gabriele, Kovacs-Lang, Edit, Kroel-Dulay, György, and De Angelis, Paolo
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CARBON dioxide ,SOIL composition ,DROUGHTS & the environment ,ABIOTIC environment ,WATER supply ,SOIL microbiology - Abstract
Water availability, together with temperature, represents the most limiting abiotic factor regulating soil CO
2 efflux (SR). Besides the direct effect of water limitation, drought also influences plant activity, determining changes in the quality and quantity of root exudates, thus indirectly affecting soil microbial activity. To determine how the seasonal changes of plant activity and soil microbial metabolism and structure affect SR response to drought, we investigated the correlation between leaf gas exchange, soil carbon pools and soil respiration sources and the role of soil carbon pools on microbial populations and soil respiration, in a summer deciduous Mediterranean (SDS) and a winter deciduous temperate (WDS) shrublands, experiencing a dry summer period. In both sites, drought reduced photosynthesis, but affected SR differently: in SDS, SR decreased, although microbial heterotrophic respiration (SRh ) remained unchanged; in WDS, SR did not vary but SRh was reduced. While in SDS the microbial community was able to respire more complex substrates, in WDS it was strongly dependent on easily decomposable molecules, thus on plant activity. Therefore, the response of soil CO2 efflux to water limitation is not exclusively influenced by climate as it is modulated by the degree of adaptation of the microbial community to drought. [ABSTRACT FROM AUTHOR]- Published
- 2017
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9. Canopy Chamber: a useful tool to monitor the CO2 exchange dynamics of shrubland.
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Guidolotti, Gabriele, De Dato, Giovanbattista, Liberati, Dario, and De Angelis, Paolo
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FOREST canopies ,SHRUBLAND ecology ,ECOSYSTEM management ,EFFECT of temperature on trees ,EFFECT of wind on plants - Abstract
A transient state canopy-chamber was developed to monitor CO
2 exchange of shrubland ecosystems. The chamber covered 0.64 m² and it was modular with a variable height. Several tests were carried out to check the potential errors in the flux estimates due to leakages and the environment modifications during the measurements inside the chamber. The laboratory leakages test showed an error below 1% of the flux; the temperature increases inside the chamber were below 1.3 °C at different light intensity and small pressure changes. The radial blowers inside the chamber created different wind speed at different chamber height, with faster speed at the top of the chamber and the minimum wind speed that was recorded at soil level, preventing detectable effects on soil CO2 emission rates. Moreover, the chamber was tested for two years in a semi-arid Mediterranean garrigue, identifying a strong seasonality of CO2 fluxes with the highest rates during spring and lowest rates recorded during the hot dry non-vegetative summer. [ABSTRACT FROM AUTHOR]- Published
- 2017
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10. Alleviating Nitrogen Limitation in Mediterranean Maquis Vegetation Leads to Ecological Degradation
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Dias, Teresa, Crous, Casparus J., Liberati, Dario, Munzi, Silvana, Gouveia, Catarina, Ulm, Florian, Afonso, Ana Catarina, Ochoa-Hueso, Raúl, Manrique, Esteban, Sheppard, Lucy, Martins-Loução, Maria Amelia, Bernardes da Silva, Anabela, and Cruz, Cristina
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Plant-soil ecological partnerships ,Ecosystem functioning ,Ecosystem degradation ,Mediterranean ,Ecology and Environment ,Ammonium - Abstract
Soils are being degraded at an alarming rate and thereby also crucial ecosystem goods and services. Nitrogen (N) enrichment is a major driver of this degradation. While the negative impacts of N enrichment on vegetation are well known globally, those on various ecological interactions, and on ecosystem functioning, remain largely unknown. Because Mediterranean ecosystems are N limited, they are good model systems for evaluating how N enrichment impacts not only vegetation but also ecological partnerships and ecosystem functioning. Using a 7-year N-manipulation (dose and form) field experiment running in a Mediterranean Basin maquis located in a region with naturally low ambient N deposition (
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