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Competitive effect, but not competitive response, varies along a climatic gradient depending on tree species identity

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Forest Ecosystems 2024年第2期11卷 142-151页

作者： Teresa Valor Lluís Coll David I.Forrester Hans Pretzsch Miren del Río Kamil Bielak Bogdan Brzeziecki Franz Binder Torben Hilmers Zuzana Sitková roberto tognetti Aitor Ameztegui Department of Agricultural and Forest Sciences and Engineering(DCEFA) University of LleidaAv.Alcalde Rovira Roure 191E25198 LleidaSpain Joint Research Unit CTFC-AGROTECNIO-CERCA Ctra.Sant LlorençKm.225280SolsonaSpain Swiss Federal Institute of Forest Snow and Landscape Research WSLZürcherstrasse 1118903BirmensdorfSwitzerland CSIRO Land and Water GPO Box 1700CanberraACT2601Australia Chair of Forest Growth and Yield Science School of Life Sciences WeihenstephanTechnical University of MunichHans-Carl-Von-Carlowitz-Platz 285354FreisingGermany Forest Research Center INIA-CSICCtra.A Coruña Km 7.528040MadridSpain IuFOR Sustainable Forest Management Research InstituteUniversity of Valladolid&INIASpain Department of Silviculture Institute of Forest SciencesWarsaw University of Life SciencesNowoursynowska 159/3402776WarsawPoland Bavarian State Institute of Forestry(LWF) Hans-Carl-von-Carlowitz-Platz 1D-85354FreisingGermany National Forest Centre Forest Research InstituteT.G.Masaryka 2296001ZvolenSlovakia Faculty of Agricultural Environmental and Food SciencesFree University of Bozen-Bolzano Piazza Università1 I-39100Bolzano

Background: Understanding the role of species identity in interactions among individuals is crucial for assessing the productivity and stability of mixed forests over time. However, there is limited knowledge concerning the variation in competitive effect and response of different species along climatic gradients. In this study, we investigated the importance of climate, tree size, and competition on the growth of three tree species: spruce(Picea abies), fir(Abies alba), and beech(Fagus sylvatica), and examined their competitive response and effect along a climatic ***: We selected 39 plots distributed across the European mountains with records of the position and growth of 5,759 individuals. For each target species, models relating tree growth to tree size, climate and competition were proposed. Competition was modelled using a neighbourhood competition index that considered the effects of inter-and intraspecific competition on target trees. Competitive responses and effects were related to *** methods and information theory were used to select the best ***: Our findings revealed that competition had a greater impact on target species growth than tree size or climate. Climate did influence the competitive effects of neighbouring species, but it did not affect the target species? response to competition. The strength of competitive effects varied along the gradient, contingent on the identity of the interacting species. When the target species exhibited an intermediate competitive effect relative to neighbouring species, both higher inter-than intraspecific competitive effects and competition reduction occurred along the gradient. Notably, species competitive effects were most pronounced when the target species' growth was at its peak and weakest when growing conditions were far from their ***: Climate modulates the effects of competition from neighbouring trees on the target tree and not the susceptibility of th

关键词： Competition coefficient Competition reduction Interspecific competition Intraspecific competition Mixing effects Mixed species forest Neighbourhood models Plant-plant interactions

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Monitoring the abundance of saproxylic red-listed species in a managed beech forest by landsat temporal metrics

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Forest Ecosystems 2022年第4期9卷 529-539页

作者： Francesco Parisi Elia Vangi Saverio Francini Gherardo Chirici Davide Travaglini Marco Marchetti roberto tognetti GeoLAB-Laboratorio di Geomatica Forestale Dipartimento di Scienze e Tecnologie AgrarieAlimentariAmbientali e ForestaliUniversita degli Studi di FirenzeVia San Bonaventura 1350145FirenzeItaly Dipartimento di Bioscienze e Territorio Universita degli Studi del MoliseContrada Fonte Lappone86090 PescheIserniaItaly Fondazione per il Futuro delle Citta FirenzeItaly Dipartimento Agricoltura Ambiente e AlimentiUniversita degli Studi del MoliseVia De SanctisI-86100CampobassoItaly

Background:Rapid climate changes lead to an increase in forest disturbance,which in turn lead to growing concerns for *** saproxylic beetles are relevant indicators for studying different aspects of biodiversity,most are smaller than 2 mm and difficult to ***,together with a high number of species and trophic roles,make their study remarkably challenging,time-consuming,and *** Landsat mission provides data since 1984 and represents a powerful tool in this *** we believe that remote sensing data cannot replace on-site sampling and analysis,in this study we aim to prove that the Landsat Time Series(TS)may support the identification of insects’hotspots and consequently guide the selection of areas where to concentrate field ***:With this aim,we constructed a Landsat-derived NDVI TS(1984–2020)and we summarised the NDVI trend over time by calculating eight Temporal Metrics(TMs)among which four resulted particularly successful in predicting the amount of saproxylic insects:(i)the slope of the regression line obtained by linear interpolating the NDVI values over time;(ii)the Root Mean Square Error(RMSE)between the regression line and the NDVI TS;(iii)the median,and the(iv)minimum values of the NDVI *** study area consists of four monitoring sectors in a Mediterranean-managed beech forest located in the Apennines(Molise,Italy),where 60 window flight traps for flying beetles were ***,the saproxylic beetle's biodiversities of monitoring sectors were quantified in terms of species richness and ***,the capability of TMs in predicting the richness of saproxylic beetles family and trophic categories was assessed in terms of Pearson's product-moment ***:The alpha diversity and species richness analysis indicate dissimilarities across the four monitored sectors(Shannon and Simpson's index ranging between 0.67 to 2.31 and 0.69 to 0.88,respectively),with Landsat TS resulting in

关键词： Alpha-diversity Beetle assemblages Biodiversity hotspots Normalized difference vegetation index Temporal metrics

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Diversity of beetle species and functional traits along gradients of deadwood suggests weak environmental filtering

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Forest Ecosystems 2023年第1期10卷 56-63页

作者： Marco Basile Francesco Parisi roberto tognetti Saverio Francini Fabio Lombardi Marco Marchetti Davide Travaglini Elena De Santis Gherardo Chirici Swiss Federal Research Institute WSL Zürcherstrasse 1118903BirmensdorfSwitzerland Swiss Ornithological Institute Seerose 16204SempachSwitzerland GeoLAB-Laboratory of Forest Geomatics Department of AgricultureFoodEnvironment and ForestryUniversita degli Studi di FirenzeFirenzeItaly Dipartimento Agricoltura Ambiente e AlimentiUniversita degli Studi del MoliseVia De Sanctis86100CampobassoItaly Fondazione per il Futuro delle Citta FirenzeItaly Dipartimento di Agraria Universita Mediterranea di Reggio CalabriaLocalita di Feo di VitoReggio Calabria89122Italy Dipartimento di Bioscienze e Territorio Universita degli Studi del MoliseContrada Fonte Lappone86090PescheItaly

Background: Gradients in local environmental characteristics may favour the abundance of species with particular traits, while other species decline, or favour species with different traits at the same time, without an increase in average species abundances. Therefore, we asked: do variations in species and traits differ along gradients of deadwood variables? Do species abundance and trait occurrence change with species richness within or between functional groups? Thus, we analysed the beetle assemblages of five forest sites located in Italy, along the Apennines ***: From 2012 to 2018 we sampled beetles and five deadwood types in 193 plots to characterise the deadwood gradient: standing dead trees, snags, dead downed trees, coarse woody debris, and stumps. We modelled beetle species relative abundances and trophic traits occurrences against the deadwood variables using joint species distribution ***: Out of 462 species, only 77 showed significant responses to at least one deadwood type, with a weak mean response across species. Trophic groups showed mostly negative responses to deadwood variables. Species abundance increased with species richness among sites only for phytophagous and saproxylophagous. Trait occurrence did not increase with species richness among sites, except for phytophagous and ***, trait occurrence changed significantly with species richness of several trophic groups within some *** found that increases in species richness do not result in decreases in species abundance of a given trophic group, but rather null or positive relationships were found suggesting low interspecific ***: Our findings suggest that in Mediterranean mountain forests there is still room for increasing the level of naturalness, at least for what concerns deadwood management. On one side, our findings suggest that competition for deadwood substrates is still low, on the other side they indicate that incre

关键词： Abundance Forest Italy Joint species distribution model Saproxylic Trophic group

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Glacial biodiversity of the southernmost glaciers of the European Alps(Clapier and Peirabroc,Italy)

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Journal of Mountain Science 2022年第8期19卷 2139-2159页

作者： Barbara VALLE Mauro GOBBI Marta tognetti Marina Serena BORGATTI Chiara COMPOSTELLA Paolo PANTINI Marco CACCIANIGA Universitàdegli Studi di Milano Department of BiosciencesVia Celoria 2620133 MilanoItaly MUSE-Science Museum of Trento Research and Museum Collections OfficeClimate and Ecology UnitCorso del Lavoro e della Scienza338122 TrentoItaly Universitàdegli Studi di Milano Dipartimento di Scienze della Terra"A.Desio"Via Mangiagalli 3420133 MilanoItaly Museo Civico di Scienze Naturali"E.Caffi" Piazza della Cittadella1024129 BergamoItaly

We applied a multi-taxa approach integrating the co-occurrence of plants,ground beetles,spiders and springtails with soil parameters(temperatures and chemical characteristics)in order to describe the primary succession along two glacier forelands in the Maritime Alps(Italy),a hotspot of Mediterranean *** compared these successions to those from Central Alps:Maritime glacier forelands markedly differ for their higher values of species richness and species *** to our expectation,Maritime glacier forelands follow a‘replacement change model’,like continental succession of Inner Alps and differently from other peripheral *** propose that the temperatures along these Mediterranean glacier forelands are warmer than those along other Alpine glacier forelands,which promote the faster species ***,we found that early and mid successional stages of the investigated glaciers are richer in cold-adapted and endemic species than the later ones:we confirmed that the‘replacement change’model disadvantages pioneer,cold-adapted *** the overall correspondence among coldadapted and endemic species,the most threatened in this climate phase,our results raise new concerns about the extinction risk of these *** also describe supraglacial habitat of Maritime glaciers demonstrating that supraglacial debris represents an environment decoupled from the regional climate and may have an important role as refugium for coldadapted and hygrophilous plant and animal species,whose survival can be threatened by climate change and by a rapid ecological succession in the adjacent forelands.

关键词： Arthropod communities Cold-adapted species Glacier forelands Plant communities Primary succession

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The Role of Social Networks in Health

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Journal of Sociology Study 2012年第1期2卷 60-67页

作者： Mara tognetti Bordogna Simona Olivadoti University of Milan-Bicocca Italy

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Spatial H202 Signaling Specificity： H202 from Chloroplasts and Peroxisomes Modulates the Plant Transcriptome Differentially

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Molecular Plant 2014年第7期7卷 1191-1210页

作者： Nasser Sewelam Nils Jaspert Katrien Van Der Kelen Vanesa B. tognetti Jessica Schmitz Henning Frerigmann Elia Stahl Frank Van Breusegem Veronica G. Maurino Institut of Developmental and Molecular Biology of Plants Plant Molecular Physiology and Biotechnology Group Heinrich-Heine-Universit~t Universit~tsstraBe 1 40225 D~sseldorf Germany Botany Department Faculty of Science Tanta University 31527 Tanta Egypt Department of Plant Systems Biology VIB and Department of Plant Biotechnology and Bioinformatics Ghent UniversityTechnologiepark 927 B-9052 Gent Belgium Present address: Mendel Centre for Plant Genomics and Proteomics CEITEC--Central European Institute of Technology MasarykUniversity Kamenice 5 CZ-62500 Brno Czech Republic Botanical Institute Cologne Biocenter University of Cologne 50674 Cologne Germany Cluster of Excellence on Plant Sciences (CEPLAS) 40225 Dusseldorf and 50674 Cologne Germany Molecular Ecophysiology of Plants Heinrich-Heine-Universitat Universitatsstraf3e 1 40225 D~sseldorf Germany

Hydrogen peroxide （H2O2） operates as a signaling molecule in eukaryotes, but the specificity of its signal- ing capacities remains largely unrevealed. Here, we analyzed whether a moderate production of H2O2 from two different plant cellular compartments has divergent effects on the plant transcriptome. Arabidopsis thaliana overexpressing glycolate oxidase in the chloroplast （Fahnenstich et al., 2008; Balazadeh et al., 2012） and plants deficient in peroxisomal catalase （Queval et al., 2007; Inze et al., 2012） were grown under non-photorespiratory conditions and then transferred to photorespiratory conditions to foster the production of H202 in both organelles. We show that H202 originating in a specific organelle induces two types of responses： one that integrates signals independently from the subcellular site of H202 production and another that is dependent on the H2O2 production site. H2O2 produced in peroxisomes induces transcripts involved in protein repair responses, while H2O2 produced in chloroplasts induces early signaling responses, including transcription factors and biosynthetic genes involved in production of secondary signaling messengers. There is a significant bias towards the induction of genes involved in responses to wounding and pathogen attack by chloroplas- tic-produced H202, including indolic glucosinolates-, camalexin-, and stigmasterol-biosynthetic genes. These transcriptional responses were accompanied by the accumulation of 4-methoxy-indol-3-ylmethyl glucosinolate and stigmasterol.

关键词： hydrogen peroxide reactive oxygen species glycolate oxidase catalase photorespiration oxidative signaling.

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