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  1. Article: Stem radial increment of forest and savanna ecotypes of a Neotropical tree: relationships with climate, phenology, and water potential

    Toledo, Marcos Miranda / Paiva, Elder Antônio Sousa / Lovato, Maria Bernadete / de Lemos Filho, José Pires

    Trees structure and function. 2012 Aug., v. 26, no. 4

    2012  

    Abstract: The aim of the present study was to investigate differences in stem radial increment between the savanna and forest ecotypes of Plathymenia reticulata at an ecotonal site. It was hypothesised that even under similar climate conditions, the savanna and ... ...

    Abstract The aim of the present study was to investigate differences in stem radial increment between the savanna and forest ecotypes of Plathymenia reticulata at an ecotonal site. It was hypothesised that even under similar climate conditions, the savanna and forest ecotypes exhibit differences in radial growth, phenology, and water status because of differences in wood density. Stem radial increment, phenology, and water potential were evaluated monthly. The radial increment was positively related to precipitation and displayed no increment (or decrement) in months with low rainfall. A negative relationship was observed between radial growth and wood density, with the forest ecotype exhibiting a higher radial increment than the savanna ecotype. Midday water potential (ΨMD) was also negatively related to wood density. Compared to the forest ecotype, the savanna ecotype displayed lower values of ΨMD during the dry season and started leaf senescence earlier at the beginning of the dry season. Leaf fall improved water status, resulting in leaf flushing even without a significant increase in rainfall. Radial growth significantly increased only after the crown leaf cover was completed. The results confirmed the importance of wood density in the differential responses of ecotypes in relation to growth, water status, and phenology.
    Keywords dry season ; ecotypes ; forests ; leaves ; phenology ; rain ; savannas ; trees ; tropics ; water potential ; wood density
    Language English
    Dates of publication 2012-08
    Size p. 1137-1144.
    Publishing place Springer-Verlag
    Document type Article
    ZDB-ID 90595-1
    ISSN 1432-2285 ; 0931-1890
    ISSN (online) 1432-2285
    ISSN 0931-1890
    DOI 10.1007/s00468-012-0690-y
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 4635: Show issues

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  2. Article ; Online: Climate seasonality limits leaf carbon assimilation and wood productivity in tropical forests

    Wagner, Fabien H. / Hérault, Bruno / Bonal, Damien / Stahl, Clément / Anderson, Liana O. / Baker, Timothy R. / Becker, Gabriel Sebastian / Beeckman, Hans / Boanerges Souza, Danilo / Botosso, Paulo Cesar / Bowman, David M.J.S. / Bräuning, Achim / Brede, Benjamin / Brown, Foster Irving / Camarero, Jesus Julio / Camargo, Plínio Barbosa / Cardoso, Fernanda C.G. / Carvalho, Fabrício Alvim / Castro, Wendeson /
    Chagas, Rubens Koloski / Chave, Jérome / Chidumayo, Emmanuel N. / Clark, Deborah A. / Costa, Flavia Regina Capellotto / Couralet, Camille / Da Silva Mauricio, Paulo Henrique / Dalitz, Helmut / De Castro, Vinicius Resende / De Freitas Milani, Jaçanan Eloisa / De Oliveira, Edilson Consuelo / De Souza Arruda, Luciano / Devineau, Jean-Louis / Drew, David M. / Dünisch, Oliver / Durigan, Giselda / Elifuraha, Elisha / Fedele, Marcio / Ferreira Fedele, Ligia / Figueiredo Filho, Afonso / Finger, César Augusto Guimarães / Franco, Augusto César / Freitas Júnior, João Lima / Galvão, Franklin / Gebrekirstos, Aster / Gliniars, Robert / Lima De Alencastro Graça, Paulo Maurício / Griffiths, Anthony D. / Grogan, James / Guan, Kaiyu / Homeier, Jürgen / Kanieski, Maria Raquel / Kho, Lip Khoon / Koenig, Jennifer / Kohler, Sintia Valerio / Krepkowski, Julia / Lemos-filho, José Pires / Lieberman, Diana / Lieberman, Milton Eugene / Lisi, Claudio Sergio / Longhi Santos, Tomaz / López Ayala, José Luis / Maeda, Eduardo Eijji / Malhi, Yadvinder / Maria, Vivian R.B. / Marques, Marcia C.M. / Marques, Renato / Maza Chamba, Hector / Mbwambo, Lawrence / Melgaço, Karina Liana Lisboa / Mendivelso, Hooz Angela / Murphy, Brett P. / O'Brien, Joseph J. / Oberbauer, Steven F. / Okada, Naoki / Pélissier, Raphaël / Prior, Lynda D. / Roig, Fidel Alejandro / Ross, Michael / Rossatto, Davi Rodrigo / Rossi, Vivien / Rowland, Lucy / Rutishauser, Ervan / Santana, Hellen / Schulze, Mark / Selhorst, Diogo / Silva, Williamar Rodrigues / Silveira, Marcos / Spannl, Susanne / Swaine, Michael D. / Toledo, José Julio / Toledo, Marcos Miranda / Toledo, Marisol / Toma, Takeshi / Tomazello Filho, Mario / Valdez Hernández, Juan Ignacio / Verbesselt, Jan / Vieira, Simone Aparecida / Vincent, Grégoire / Volkmer De Castilho, Carolina / Volland, Franziska / Worbes, Martin / Zanon, Magda Lea Bolzan / Aragão, Luiz E.O.C.

    Biogeosciences

    2016  Volume 13, Issue 8

    Abstract: The seasonal climate drivers of the carbon cycle in tropical forests remain poorly known, although these forests account for more carbon assimilation and storage than any other terrestrial ecosystem. Based on a unique combination of seasonal pan-tropical ...

    Abstract The seasonal climate drivers of the carbon cycle in tropical forests remain poorly known, although these forests account for more carbon assimilation and storage than any other terrestrial ecosystem. Based on a unique combination of seasonal pan-tropical data sets from 89 experimental sites (68 include aboveground wood productivity measurements and 35 litter productivity measurements), their associated canopy photosynthetic capacity (enhanced vegetation index, EVI) and climate, we ask how carbon assimilation and aboveground allocation are related to climate seasonality in tropical forests and how they interact in the seasonal carbon cycle. We found that canopy photosynthetic capacity seasonality responds positively to precipitation when rainfall is < 2000 mm yr−1 (water-limited forests) and to radiation otherwise (light-limited forests). On the other hand, independent of climate limitations, wood productivity and litterfall are driven by seasonal variation in precipitation and evapotranspiration, respectively. Consequently, light-limited forests present an asynchronism between canopy photosynthetic capacity and wood productivity. First-order control by precipitation likely indicates a decrease in tropical forest productivity in a drier climate in water-limited forest, and in current light-limited forest with future rainfall < 2000 mm yr−1.
    Keywords Life Science
    Subject code 550
    Language English
    Publishing country nl
    Document type Article ; Online
    ZDB-ID 2158181-2
    ISSN 1726-4189 ; 1726-4170
    ISSN (online) 1726-4189
    ISSN 1726-4170
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: Stem radial increment of forest and savanna ecotypes of a Neotropical tree: relationships with climate, phenology, and water potential

    Toledo, Marcos Miranda / Paiva, Elder Antônio Sousa / Lovato, Maria Bernadete / de Lemos Filho, José Pires

    Trees structure and function

    Volume v. 26,, Issue no. 4

    Abstract: The aim of the present study was to investigate differences in stem radial increment between the savanna and forest ecotypes of Plathymenia reticulata at an ecotonal site. It was hypothesised that even under similar climate conditions, the savanna and ... ...

    Abstract The aim of the present study was to investigate differences in stem radial increment between the savanna and forest ecotypes of Plathymenia reticulata at an ecotonal site. It was hypothesised that even under similar climate conditions, the savanna and forest ecotypes exhibit differences in radial growth, phenology, and water status because of differences in wood density. Stem radial increment, phenology, and water potential were evaluated monthly. The radial increment was positively related to precipitation and displayed no increment (or decrement) in months with low rainfall. A negative relationship was observed between radial growth and wood density, with the forest ecotype exhibiting a higher radial increment than the savanna ecotype. Midday water potential (ΨMD) was also negatively related to wood density. Compared to the forest ecotype, the savanna ecotype displayed lower values of ΨMD during the dry season and started leaf senescence earlier at the beginning of the dry season. Leaf fall improved water status, resulting in leaf flushing even without a significant increase in rainfall. Radial growth significantly increased only after the crown leaf cover was completed. The results confirmed the importance of wood density in the differential responses of ecotypes in relation to growth, water status, and phenology.
    Keywords forests ; wood density ; trees ; dry season ; savannas ; phenology ; water potential ; leaves ; ecotypes ; rain ; tropics
    Language English
    Document type Article
    ISSN 0931-1890
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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