@Article{GirardinAMHMDMSW:2013:FiRoDy,
               author = "Girardin, C. A. J. and Arag{\~a}o, Luiz Eduardo Oliveira e Cruz 
                         de and Malhi, Yadvinder and Huaraca Huasco, W. and Metcalfe, 
                         Daniel B. and Durand, L. and Mamani, M. and Silva-Espejo, J. E. 
                         and Whittaker, R. J.",
          affiliation = "{Oxford University} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Oxford University} and {Universdidad San Antonio} and 
                         {University of Oxford} and {Universidad San Antonio} and 
                         {Universidad San Antonio} and {Universidad San Antonio} and 
                         {Oxford University}",
                title = "Fine root dynamics along an elevational gradient in tropical 
                         Amazonian and Andean forests",
              journal = "Global Biogeochemical Cycles",
                 year = "2013",
               volume = "27",
               number = "1",
                pages = "n/a-n/a",
             abstract = "The key role of tropical forest belowground carbon stocks and 
                         fluxes is well recognised as one of the main components of the 
                         terrestrial ecosystem carbon cycle. This study presents the first 
                         detailed investigation of spatial and temporal patterns of fine 
                         root stocks and fluxes in tropical forests along an elevational 
                         gradient, ranging from the Peruvian Andes (3020 m) to lowland 
                         Amazonia (194 m), with mean annual temperatures of 11.8C to 26.4 C 
                         and annual rainfall values of 1900 to 1560 mm yr-1, respectively. 
                         Specifically, we analyse abiotic parameters controlling fine root 
                         dynamics, fine root growth characteristics, and seasonality of net 
                         primary productivity along the elevation gradient. Root and soil 
                         carbon stocks were measured by means of soil cores, and fine root 
                         productivity was recorded using rhizotron chambers and ingrowth 
                         cores. We find that mean annual fine root below ground net primary 
                         productivity in the montane forests (030 cm depth) ranged between 
                         4.270.56 Mg C ha-1 yr-1 (1855 m) and 1.720.87 Mg C ha-1 yr-1 (3020 
                         m). These values include a correction for finest roots (<0.6 mm 
                         diameter), which we suspect are under sampled, resulting in an 
                         underestimation of fine roots by up to 31% in current ingrowth 
                         core counting methods. We investigate the spatial and seasonal 
                         variation of fine root dynamics using soil depth profiles and an 
                         analysis of seasonal amplitude along the elevation gradient. We 
                         report a stronger seasonality of NPPFineRoot within the cloud 
                         immersion zone, most likely synchronised to seasonality of solar 
                         radiation. Finally, we provide the first insights into root growth 
                         characteristics along a tropical elevation transect: fine root 
                         area and fine root length increase significantly in the montane 
                         cloud forest. These insights into belowground carbon dynamics of 
                         tropical lowland and montane forests have significant implications 
                         for our understanding of the global tropical forest carbon 
                         cycle.",
                  doi = "10.1029/2011GB004082",
                  url = "http://dx.doi.org/10.1029/2011GB004082",
                 issn = "0886-6236",
                label = "lattes: 5174466549126882 2 GirardinAHMDMSW:2013:FiRoDy",
             language = "en",
        urlaccessdate = "03 maio 2024"
}