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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
20/06/2022 |
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Data da última atualização: |
21/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GUO, W.-Y.; SERRA-DIAZE, J. M.; SCHRODTF, F.; EISERHARDT, W. L.; MAITNER, B. S.; MEROW, C.; VIOLLEJ, C.; ANAND, M.; BELLUAU, M.; BRUUN, H. H.; BYUN, C.; CATFORD, J. A.; CERABOLINI, B. E. L.; CHACÓN-MADRIGAL, E.; CICCARELLI, D.; CORNELISSEN, J. H. C.; DANG-LE, A. T.; FRUTOS, A. de; DIAS, A. S.; GIROLDO, A. B.; GUO, K.; GUTIÉRREZ, A. G.; HATTINGH, W.; HE, T.; HIETZ, P.; HOUGH-SNEE, N.; JANSEN, S.; KATTGE, J.; KLEIN, T.; KOMAC, B.; KRAFT, N. J. B.; KRAMER, K.; LAVOREL, S.; LUSK, C. H.; MARTIN, A. R.; MENCUCCINI, M.; MICHALETZ, S. T.; MINDENT, V.; MORI, A. S.; NIINEMETS, Ü.; ONODA, Y.; PEÑUELAS, J.; PILLAR, V. D.; PISEK, J.; ROBROEK, B. J. M.; SCHAMP, B.; SLOT, M.; SOSINSKI JUNIOR, E. E.; SOUDZILOVSKAIA, N. A.; THIFFAULT, N.; VAN BODEGOM, P.; VAN DER PLAS, F.; WRIGHT, I. J.; XU, W.-B.; ZHENG, J.; ENQUIST, B. J.; SVENNING, J.-C. |
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Afiliação: |
WEN-YONG GUO; JOSEP M. SERRA-DIAZE; FRANZISKA SCHRODTF; WOLF L. EISERHARDT; BRIAN S. MAITNER; CORY MEROW; CYRILLE VIOLLEJ; MADHUR ANAND; MICHA?EL BELLUAU; HANS HENRIK BRUUN; CHAEHO BYUN; JANE A. CATFORD; BRUNO E. L. CERABOLINI; EDUARDO CHACÓN-MADRIGAL; DANIELA CICCARELLI; J. HANS C. CORNELISSEN; ANH TUAN DANG-LE; ANGEL DE FRUTOS; ARILDO S. DIAS; AELTON B. GIROLDO; KUN GUO; ALVARO G. GUTIÉRREZ; WESLEY HATTINGH; TIANHUA HE; PETER HIETZ; NATE HOUGH-SNEE; STEVEN JANSEN; JENS KATTGE; TAMIR KLEIN; BENJAMIN KOMAC; NATHAN J. B. KRAFT; KOEN KRAMER; SANDRA LAVOREL; CHRISTOPHER H. LUSK; ADAM R. MARTIN; MAURIZIO MENCUCCINI; SEAN T. MICHALETZ; VANESSA MINDENT; AKIRA S. MORI; ÜLO NIINEMETS; YUSUKE ONODA; JOSEP PEÑUELAS; VALÉRIO D. PILLAR; JAN PISEK; BJORN J. M. ROBROEK; BRANDON SCHAMP; MARTIJN SLOT; ENIO EGON SOSINSKI JUNIOR, CPACT; NADEJDA A. SOUDZILOVSKAIA; NELSON THIFFAULT; PETER VAN BODEGOM; FONS VAN DER PLAS; IAN J. WRIGHT; WU-BING XU; JINGMING ZHENG; BRIAN J. ENQUIST; JENS-CHRISTIAN SVENNING. |
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Título: |
High exposure of global tree diversity to human pressure. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
PNAS, v. 119, n. 25, e2026733119, 2022. |
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Páginas: |
11 p. |
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ISSN: |
1091-6490 |
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Idioma: |
Inglês |
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Notas: |
Proceedings of the National Academy of Sciences of the United States of America. |
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Conteúdo: |
Safeguarding Earth?s tree diversity is a conservation priority due to the importance of trees for biodiversity and ecosystem functions and services such as carbon sequestration. Here, we improve the foundation for effective conservation of global tree diversity by analyzing a recently developed database of tree species covering 46,752 species. We quantify range protection and anthropogenic pressures for each species and develop conservation priorities across taxonomic, phylogenetic, and functional diversity dimensions. We also assess the effectiveness of several influential proposed conservation prioritization frameworks to protect the top 17% and top 50% of tree priority areas. We find that an average of 50.2% of a tree species? range occurs in 110-km grid cells without any protected areas (PAs), with 6,377 small-range tree species fully unprotected, and that 83% of tree species experience nonnegligible human pressure across their range on average. Protecting highpriority areas for the top 17% and 50% priority thresholds would increase the average protected proportion of each tree species? range to 65.5% and 82.6%, respectively, leaving many fewer species (2,151 and 2,010) completely unprotected. The priority areas identified for trees match well to the Global 200 Ecoregions framework, revealing that priority areas for trees would in large part also optimize protection for terrestrial biodiversity overall. Based on range estimates for >46,000 tree species, our findings show that a large proportion of tree species receive limited protection by current PAs and are under substantial human pressure. Improved protection of biodiversity overall would also strongly benefit global tree diversity. MenosSafeguarding Earth?s tree diversity is a conservation priority due to the importance of trees for biodiversity and ecosystem functions and services such as carbon sequestration. Here, we improve the foundation for effective conservation of global tree diversity by analyzing a recently developed database of tree species covering 46,752 species. We quantify range protection and anthropogenic pressures for each species and develop conservation priorities across taxonomic, phylogenetic, and functional diversity dimensions. We also assess the effectiveness of several influential proposed conservation prioritization frameworks to protect the top 17% and top 50% of tree priority areas. We find that an average of 50.2% of a tree species? range occurs in 110-km grid cells without any protected areas (PAs), with 6,377 small-range tree species fully unprotected, and that 83% of tree species experience nonnegligible human pressure across their range on average. Protecting highpriority areas for the top 17% and 50% priority thresholds would increase the average protected proportion of each tree species? range to 65.5% and 82.6%, respectively, leaving many fewer species (2,151 and 2,010) completely unprotected. The priority areas identified for trees match well to the Global 200 Ecoregions framework, revealing that priority areas for trees would in large part also optimize protection for terrestrial biodiversity overall. Based on range estimates for >46,000 tree species, our findings show... Mostrar Tudo |
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Palavras-Chave: |
Área protegida. |
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Thesagro: |
Árvore; Biodiversidade; Conservação. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1144157/1/Guo-et-al.-2022-PNAS-High-exposure-of-global-tree-diversity-to-human-pressure.pdf
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Marc: |
LEADER 03991naa a2200877 a 4500
001 2144157
005 2022-06-21
008 2022 bl uuuu u00u1 u #d
022 $a1091-6490
100 1 $aGUO, W.-Y.
245 $aHigh exposure of global tree diversity to human pressure.$h[electronic resource]
260 $c2022
300 $a11 p.
500 $aProceedings of the National Academy of Sciences of the United States of America.
520 $aSafeguarding Earth?s tree diversity is a conservation priority due to the importance of trees for biodiversity and ecosystem functions and services such as carbon sequestration. Here, we improve the foundation for effective conservation of global tree diversity by analyzing a recently developed database of tree species covering 46,752 species. We quantify range protection and anthropogenic pressures for each species and develop conservation priorities across taxonomic, phylogenetic, and functional diversity dimensions. We also assess the effectiveness of several influential proposed conservation prioritization frameworks to protect the top 17% and top 50% of tree priority areas. We find that an average of 50.2% of a tree species? range occurs in 110-km grid cells without any protected areas (PAs), with 6,377 small-range tree species fully unprotected, and that 83% of tree species experience nonnegligible human pressure across their range on average. Protecting highpriority areas for the top 17% and 50% priority thresholds would increase the average protected proportion of each tree species? range to 65.5% and 82.6%, respectively, leaving many fewer species (2,151 and 2,010) completely unprotected. The priority areas identified for trees match well to the Global 200 Ecoregions framework, revealing that priority areas for trees would in large part also optimize protection for terrestrial biodiversity overall. Based on range estimates for >46,000 tree species, our findings show that a large proportion of tree species receive limited protection by current PAs and are under substantial human pressure. Improved protection of biodiversity overall would also strongly benefit global tree diversity.
650 $aÁrvore
650 $aBiodiversidade
650 $aConservação
653 $aÁrea protegida
700 1 $aSERRA-DIAZE, J. M.
700 1 $aSCHRODTF, F.
700 1 $aEISERHARDT, W. L.
700 1 $aMAITNER, B. S.
700 1 $aMEROW, C.
700 1 $aVIOLLEJ, C.
700 1 $aANAND, M.
700 1 $aBELLUAU, M.
700 1 $aBRUUN, H. H.
700 1 $aBYUN, C.
700 1 $aCATFORD, J. A.
700 1 $aCERABOLINI, B. E. L.
700 1 $aCHACÓN-MADRIGAL, E.
700 1 $aCICCARELLI, D.
700 1 $aCORNELISSEN, J. H. C.
700 1 $aDANG-LE, A. T.
700 1 $aFRUTOS, A. de
700 1 $aDIAS, A. S.
700 1 $aGIROLDO, A. B.
700 1 $aGUO, K.
700 1 $aGUTIÉRREZ, A. G.
700 1 $aHATTINGH, W.
700 1 $aHE, T.
700 1 $aHIETZ, P.
700 1 $aHOUGH-SNEE, N.
700 1 $aJANSEN, S.
700 1 $aKATTGE, J.
700 1 $aKLEIN, T.
700 1 $aKOMAC, B.
700 1 $aKRAFT, N. J. B.
700 1 $aKRAMER, K.
700 1 $aLAVOREL, S.
700 1 $aLUSK, C. H.
700 1 $aMARTIN, A. R.
700 1 $aMENCUCCINI, M.
700 1 $aMICHALETZ, S. T.
700 1 $aMINDENT, V.
700 1 $aMORI, A. S.
700 1 $aNIINEMETS, Ü.
700 1 $aONODA, Y.
700 1 $aPEÑUELAS, J.
700 1 $aPILLAR, V. D.
700 1 $aPISEK, J.
700 1 $aROBROEK, B. J. M.
700 1 $aSCHAMP, B.
700 1 $aSLOT, M.
700 1 $aSOSINSKI JUNIOR, E. E.
700 1 $aSOUDZILOVSKAIA, N. A.
700 1 $aTHIFFAULT, N.
700 1 $aVAN BODEGOM, P.
700 1 $aVAN DER PLAS, F.
700 1 $aWRIGHT, I. J.
700 1 $aXU, W.-B.
700 1 $aZHENG, J.
700 1 $aENQUIST, B. J.
700 1 $aSVENNING, J.-C.
773 $tPNAS$gv. 119, n. 25, e2026733119, 2022.
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Embrapa Clima Temperado (CPACT) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
24/02/2016 |
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Data da última atualização: |
16/10/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
EPRON, D.; CABRAL, O. M. R.; LACLAU, J.-P.; DANNOURA, M.; PACKER, A. P.; PLAIN, C.; BATTIE-LACLAU, P.; MOREIRA, M. Z.; TRIVELIN, P. C. O.; BOUILLET, J-P.; GÉRANT, D.; NOUVELLON, Y. |
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Afiliação: |
DANIEL EPRON, Université de Lorraine; OSVALDO MACHADO RODRIGUES CABRAL, CNPMA; JEAN-PAUL LACLAU, CIRAD; MASAKO DANNOURA, Kyoto University; ANA PAULA CONTADOR PACKER, CNPMA; CAROLINE PLAIN, INRA; PATRICIA BATTIE-LACLAU, CENA-USP; MARCELO ZACHARIAS MOREIRA, CENA-USP; PAULO CESAR OCHEUZE TRIVELIN, CENA-USP; JEAN-PIERRE BOUILLET, ESALQ-USP; DOMINIQUE GERANT, Université de Lorraine; YANN NOUVELLON, IAG-USP. |
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Título: |
In situ 13CO2 pulse labelling of field-grown eucalypt trees revealed the effects of potassium nutrition and throughfall exclusion on phloem transport of photosynthetic carbon. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Tree Physiology, Oxford, v. 36, n. 1, p. 6-21, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Potassium (K) is an important limiting factor of tree growth, but little is known of the effects of K supply on the long-distance transport of photosynthetic carbon (C) in the phloem and of the interaction between K fertilization and drought. We pulselabelled 2-year-old Eucalyptus grandis L. trees grown in a field trial combining K fertilization (+K and -K) and throughfall exclusion (+W and -W), and we estimated the velocity of C transfer by comparing time lags between the uptake of 13CO2 and its recovery in trunk CO2 efflux recorded at different heights. We also analysed the dynamics of the labelled photosynthates recovered in the foliage and in the phloem sap (inner bark extract). The mean residence time of labelled C in the foliage was short (21?31 h). The time series of 13C in excess in the foliage was affected by the level of fertilization, whereas the effect of throughfall exclusion was not significant. The velocity of C transfer in the trunk (0.20?0.82 m h-1) was twice as high in +K trees than in -K trees, with no significant effect of throughfall exclusion except for one +K -W tree labelled in the middle of the drought season that was exposed to a more pronounced water stress (midday leaf water potential of -2.2 MPa). Our results suggest that besides reductions in photosynthetic C supply and in C demand by sink organs, the lower velocity under K deficiency is due to a lower cross-sectional area of the sieve tubes, whereas an increase in phloem sap viscosity is more likely limiting phloem transport under drought. In all treatments, 10 times less 13C was recovered in inner bark extracts at the bottom of the trunk when compared with the base of the crown, suggesting that a large part of the labelled assimilates has been exported out of the phloem and replaced by unlabelled C. This supports the ?leakage-retrieval mechanism? that may play a role in maintaining the pressure gradient between source and sink organs required to sustain high velocity of phloem transport in tall trees. MenosAbstract: Potassium (K) is an important limiting factor of tree growth, but little is known of the effects of K supply on the long-distance transport of photosynthetic carbon (C) in the phloem and of the interaction between K fertilization and drought. We pulselabelled 2-year-old Eucalyptus grandis L. trees grown in a field trial combining K fertilization (+K and -K) and throughfall exclusion (+W and -W), and we estimated the velocity of C transfer by comparing time lags between the uptake of 13CO2 and its recovery in trunk CO2 efflux recorded at different heights. We also analysed the dynamics of the labelled photosynthates recovered in the foliage and in the phloem sap (inner bark extract). The mean residence time of labelled C in the foliage was short (21?31 h). The time series of 13C in excess in the foliage was affected by the level of fertilization, whereas the effect of throughfall exclusion was not significant. The velocity of C transfer in the trunk (0.20?0.82 m h-1) was twice as high in +K trees than in -K trees, with no significant effect of throughfall exclusion except for one +K -W tree labelled in the middle of the drought season that was exposed to a more pronounced water stress (midday leaf water potential of -2.2 MPa). Our results suggest that besides reductions in photosynthetic C supply and in C demand by sink organs, the lower velocity under K deficiency is due to a lower cross-sectional area of the sieve tubes, whereas an increase in phloem sap viscosity... Mostrar Tudo |
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Palavras-Chave: |
Carbon isotope; Carbon transfer; v. |
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Thesagro: |
Carbono; Eucalipto; Eucalyptus Grandis; Fertilizante potássico; Seca. |
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Thesaurus NAL: |
Eucalyptus; Potassium fertilizers. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03126naa a2200373 a 4500
001 2038387
005 2020-10-16
008 2016 bl uuuu u00u1 u #d
100 1 $aEPRON, D.
245 $aIn situ 13CO2 pulse labelling of field-grown eucalypt trees revealed the effects of potassium nutrition and throughfall exclusion on phloem transport of photosynthetic carbon.$h[electronic resource]
260 $c2016
520 $aAbstract: Potassium (K) is an important limiting factor of tree growth, but little is known of the effects of K supply on the long-distance transport of photosynthetic carbon (C) in the phloem and of the interaction between K fertilization and drought. We pulselabelled 2-year-old Eucalyptus grandis L. trees grown in a field trial combining K fertilization (+K and -K) and throughfall exclusion (+W and -W), and we estimated the velocity of C transfer by comparing time lags between the uptake of 13CO2 and its recovery in trunk CO2 efflux recorded at different heights. We also analysed the dynamics of the labelled photosynthates recovered in the foliage and in the phloem sap (inner bark extract). The mean residence time of labelled C in the foliage was short (21?31 h). The time series of 13C in excess in the foliage was affected by the level of fertilization, whereas the effect of throughfall exclusion was not significant. The velocity of C transfer in the trunk (0.20?0.82 m h-1) was twice as high in +K trees than in -K trees, with no significant effect of throughfall exclusion except for one +K -W tree labelled in the middle of the drought season that was exposed to a more pronounced water stress (midday leaf water potential of -2.2 MPa). Our results suggest that besides reductions in photosynthetic C supply and in C demand by sink organs, the lower velocity under K deficiency is due to a lower cross-sectional area of the sieve tubes, whereas an increase in phloem sap viscosity is more likely limiting phloem transport under drought. In all treatments, 10 times less 13C was recovered in inner bark extracts at the bottom of the trunk when compared with the base of the crown, suggesting that a large part of the labelled assimilates has been exported out of the phloem and replaced by unlabelled C. This supports the ?leakage-retrieval mechanism? that may play a role in maintaining the pressure gradient between source and sink organs required to sustain high velocity of phloem transport in tall trees.
650 $aEucalyptus
650 $aPotassium fertilizers
650 $aCarbono
650 $aEucalipto
650 $aEucalyptus Grandis
650 $aFertilizante potássico
650 $aSeca
653 $aCarbon isotope
653 $aCarbon transfer
653 $av
700 1 $aCABRAL, O. M. R.
700 1 $aLACLAU, J.-P.
700 1 $aDANNOURA, M.
700 1 $aPACKER, A. P.
700 1 $aPLAIN, C.
700 1 $aBATTIE-LACLAU, P.
700 1 $aMOREIRA, M. Z.
700 1 $aTRIVELIN, P. C. O.
700 1 $aBOUILLET, J-P.
700 1 $aGÉRANT, D.
700 1 $aNOUVELLON, Y.
773 $tTree Physiology, Oxford$gv. 36, n. 1, p. 6-21, 2016.
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