a242e145-21f6-4c3c-b8e4-adce70e50d85 English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2025-11-13T16:16:11 UK GEMINI 2.3 WGS 84 Site description and location of direct measured trees in the Ankeniheny Zahamena forest corridor, Madagascar 2017-03-03 publication https://catalogue.ceh.ac.uk/id/a242e145-21f6-4c3c-b8e4-adce70e50d85 10.5285/a242e145-21f6-4c3c-b8e4-adce70e50d85 doi: Razakamanarivo, H., Razafimbelo, T., Andriamananjara, A., Rianahary, A., Razafindrakoto, M., Harinirina, A. (2017). Site description and location of direct measured trees in the Ankeniheny Zahamena forest corridor, Madagascar. NERC Environmental Information Data Centre 10.5285/a242e145-21f6-4c3c-b8e4-adce70e50d85 Data comprise location (zone of interest, village name, site code, longitude, latitude, altitude and slope), local tree species name, tree code and tree diameter class of trees selected for direct measurements in the Ankeniheny Zahamena forest corridor, the remains of the evergreen forest of eastern Madagascar. Data were collected as part of a project funded by the Ecosystem Services for Poverty Alleviation (ESPA) programme under work package 4, P4GES project, grant references: NE/K008692/1, NE/K010115/1, and NE/K010220/1. Full details about this dataset can be found at https://doi.org/10.5285/a242e145-21f6-4c3c-b8e4-adce70e50d85 Razakamanarivo, H. Laboratoire des Radio Isotopes, Université d'Antananarivo herintsitohaina.razakamanarivo@gmail.com pointOfContact Razakamanarivo, H. Laboratoire des Radio Isotopes, Université d'Antananarivo herintsitohaina.razakamanarivo@gmail.com https://orcid.org/0000-0003-3126-8192 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Razafimbelo, T. Laboratoire des Radio Isotopes, Université d'Antananarivo tantely.razafimbelo@gmail.com https://orcid.org/0000-0003-2101-9715 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Andriamananjara, A. Laboratoire des Radio Isotopes, Université d'Antananarivo njaraandry1@gmail.com author Rianahary, A. Laboratoire des Radio Isotopes, Université d'Antananarivo andrisoarianahary@gmail.com author Razafindrakoto, M. Laboratoire des Radio Isotopes, Université d'Antananarivo secretariat.lri@gmail.com author Harinirina, A. Laboratoire des Radio Isotopes, Université d'Antananarivo secretariat.lri@gmail.com author NERC Environmental Information Data Centre info@eidc.ac.uk publisher NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian asNeeded Madagascar Ankeniheny Zahamena forest Corridor GeoNames 2006-01-01 creation CAZ tree location otherRestrictions no limitations otherRestrictions This resource is made available under the terms of the Open Government Licence otherRestrictions © Laboratoire des Radio Isotopes, Université d'Antananarivo otherRestrictions Acknowledgement of the Laboratoire des Radio Isotopes, Université d'Antananarivo is required for products derived from these data otherRestrictions If you reuse this data, you should cite: Razakamanarivo, H., Razafimbelo, T., Andriamananjara, A., Rianahary, A., Razafindrakoto, M., Harinirina, A. (2017). Site description and location of direct measured trees in the Ankeniheny Zahamena forest corridor, Madagascar. NERC Environmental Information Data Centre https://doi.org/10.5285/a242e145-21f6-4c3c-b8e4-adce70e50d85 textTable English utf8 economy environment 2013-06-01 2017-02-28 43.191 50.484 -25.69 -11.945 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/data/a242e145-21f6-4c3c-b8e4-adce70e50d85 Download the data Download a copy of this data download https://data-package.ceh.ac.uk/sd/a242e145-21f6-4c3c-b8e4-adce70e50d85.zip Supporting information Supporting information available to assist in re-use of this dataset information dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 A forest inventory was carried out within all sites of closed canopy in the four Zone Of Interest (ZOI). Name of species, DBH, and height (H) were recorded during the forest inventory. In order to have an idea of above-ground biomass (AGB) density, AGB at tree level was estimated by applying the allometric equation developed by Chave et al. 2014 on the inventory data. Indeed, the model developed by Chave et al. was considered because it was the most recent and included the existing national equations. Subsequently, total AGB at stand level (Mg.ha-1) for each site was calculated by summing the AGB values of all trees in the same site and dividing this value by the total survey area (ha) sampled. After, two (2) ZOIs were chosen according to the extreme values of AGB at stand level while considering the ease of access. In fact, ZOI3 has the highest value of AGB; ZOI1 and ZOI2 have very similar AGB values and have been the lowest. Thus, considering the accessibility and the cost of the work, ZOI2 was chosen for the direct measurement. The selection of sites was based on the AGB values per site in relation to the representativeness of each tree size (proportion of trees per DBH class). In order to establish this relation, AGB per site was divided at three class so that each class has the same number of values (a percentage at around 33% of the total number of sites for each class). The aim is to see for each site, which category of tree (in terms of DBH) contributes the most to its biomass (ABG). Afterwards, consideration of contribution of each tree size into AGB density in Mg.ha-1 per site for each ZOI, at least 3 sites for each ZOI were selected for BGB direct measurements. The choice of sites also takes account of the accessibility, any restriction in field process in relation with this protected area zonage. Target trees were chosen from the four dominant species sorted out from the forest inventory. Target trees were selected by considering the selection of zone, sites, diameter classes and species. Three categories of trees were considered, trees with DBH≥ 20cm, trees with 10≤DBH<20cm and trees with 5≤DBH<10cm. Following all these process, in total, 54 target trees were selected for direct measurements of BGB: 2 zones * 3 sites/zone * 3 species per site * 3 diameter class / species.