Dataset: carbon and nitrogen content in coarse woody debris sampled in northern Brazilian Amazon

The dataset provides information on carbon and nitrogen content (%) in coarse woody debris pieces (stem diameter ≥ 10 cm) sampled in two different Protected Areas situated in state of Roraima, northern Brazilian Amazon: Maracá Ecological Station (Maraca) and Viruá National Park (Virua). Both areas are PPBio (Biodiversity Research Program) grids characterized by distinct forest types. Our sampling took into consideration 128 pieces: 56 (Maraca) and 72 (Virua). All pieces were observed/measured in 2008, as specified in Silva, L.F.S.G.; Castilho, C.V.; Cavalcante, C.O.; Pimentel, T.P.; Fearnside, P.M.; Barbosa, R.I. 2016. Production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon. <em>Forest Ecology and Management, </em>364: 1-9 (doi: 10.1016/j.foreco.2015.12.045). Our dataset has a file (carbon_nitrogen_NECROMASS_Maraca-Virua.xlx) where are presented all information for each sampled piece (wood_piece_number), associated to the carbon content (%), nitrogen content (%), taxonomy (family; species), sampling date, etc. The dataset was supported by supported by INPA’s institutional project ‘‘Ecology and Management of Natural Resources of the Roraima Savanna” (PPI-INPA 012/18; 2008–2012) and the Biodiversity Research Program (PPBio Western Amazonia, Manaus). The National Council for Scientific and Technological Development of Brazil provided fellowships for R.I. Barbosa (CNPq 306286/2008-4) and P.M. Fearnside (CNPq 304020/2010-9). L.F.S.G. Silva and C. O. Cavalcante were supported by post-graduate fellowships provided by Brazilian Coordination for the Improvement of Higher Education Personnel (CAPES). The Chico Mendes Institute for Biodiversity Conservation (ICMBio) provided infrastructure and authorization for the study (Authorizations 17398-1 and 17398-2 in 2009; 22576-1 in 2010).

本数据集收录了巴西亚马孙北部罗赖马州境内两处保护区内采集的粗木质残体片段（coarse woody debris pieces，茎干直径≥10cm）的碳、氮含量（%）数据，两处保护区分别为马拉卡生态站（Maracá Ecological Station，下称马拉卡）与维鲁阿国家公园（Viruá National Park，下称维鲁阿）。两处区域均为PPBio（生物多样性研究计划，Biodiversity Research Program）样地，其森林类型各具特色。本次采样共纳入128个残体片段，其中马拉卡56个，维鲁阿72个。所有片段均于2008年完成观测与测量，相关研究细节参见如下文献：Silva, L.F.S.G.; Castilho, C.V.; Cavalcante, C.O.; Pimentel, T.P.; Fearnside, P.M.; Barbosa, R.I. 2016. 巴西亚马孙北部贫营养森林水文-土壤梯度上的粗木质残体产量与储量。*《森林生态学与管理》（Forest Ecology and Management）*，364: 1-9（DOI: 10.1016/j.foreco.2015.12.045）。本数据集附带文件carbon_nitrogen_NECROMASS_Maraca-Virua.xlx，文件中收录了每个采样片段的全部信息，包括残体编号（wood_piece_number）、碳含量（%）、氮含量（%）、分类学信息（科；物种）、采样日期等。本数据集得到了巴西亚马逊研究所（INPA）的机构项目“罗赖马热带稀树草原自然资源生态与管理”（PPI-INPA 012/18; 2008–2012）以及生物多样性研究计划（PPBio 西亚马孙，马瑙斯）的支持。巴西国家科学技术发展委员会（CNPq）为R.I. Barbosa（CNPq 306286/2008-4）与P.M. Fearnside（CNPq 304020/2010-9）提供了研究奖学金。L.F.S.G. Silva与C.O. Cavalcante获得了巴西高等教育人员发展协调局（CAPES）颁发的研究生奖学金。奇科·门德斯生物多样性保护研究所（ICMBio）为本次研究提供了基础设施与研究许可（2009年许可编号17398-1、17398-2；2010年许可编号22576-1）。