cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.34725/dvn/q7w3je
title: Assessment of tree species diversity patterns and socioeconomic uses on agricultural landscapes a case of Western Oromia, Ethiopia

description: Deforestation is one of the prominent problems in developing countries. Forest destruction, land degradation and loss of biodiversity are major environmental problems in Ethiopia. A study was conducted to assess study was to characterize on-farm tree diversity, their patterns and socioeconomic uses in the study area. Four sites representing drier and moist agroecology in the sub-humid agroecology were selected. A total of 100 households, 25 from each sites, were randomly selected and assess tree and shrub species diversity and understand their socioeconomic importance. Data on tree species diversity in the homestead, crop fields and grazing/pasture land use system were collected from 100, 18 and 11 households, respectively. The result showed that a total of 82 tree species were recorded from crop fields, homegardens and grazing/pasture land use system in the study sites. The total number of tree species in the homegardens, crop fields and grazing land was 67, 52 and 29 respectively. The Shannon diversity index in the entire land use system varied from 2.11 at Uke Badiya to 2.28 at Ongobo Bakanisa, and species evenness of the entire land use system varied from 0.565 at Oda Haro to 0.593 at Ongobo Bakanisa. The Shannon diversity index in the homestead land use system varied from 1.80 at Wayu Kumba to 2.13 at Oda Haro, and species evenness of the homestead land use system varied from 0.519 at Wayu Kumba to 0.596 at Oda Haro. The Shannon diversity index in the crop fields use system varied from 1.06 at at Oda Haro to 2.44 at Ongobo Bakanisa, and species evenness of the crop fields land use system varied from 0.450 at Wayu Kumba to 0.879 at Ongobo Bakanisa. The Shannon diversity index in the grazing land use system varied from 1.53 at Ongobo Bakanisa to 1.82 at Oda Haro, and species evenness of the grazing land use system varied from 0.487 at Ongobo Bakanisa to 0.709 at Oda Haro. The density of woody species recoreded in entire land use system varied from 133 at Oda Haro to 476 at Wayu Kumba. Structurally, Eucalyptus camaldulensis was the most important tree species among the common species to the three land use system in the study sites. Homestead size area influenced the species diversity, and coversly wealth status did not influence it. From the total surveyed of tree species abundance in the study sites 85.6% estabilished through plantation and 18.4% established through natural regenerated (retention). The purposes of tree retaining/planting were 38% for live fence, 30% for firewood, 13% for income, 13% for fodder, 4% for timber and 2% for fruit production. Generally, the study showed that agricultural landscapes harbour high diversity of trees and shrubs, to which farmers attach various values to the different utilities acrued from the system.
DOI: 10.34725/dvn/unvzg8
title: Biomass potential of trees in various land uses system in Cameroon humid forest.

description: This study was carried out in 2011 to determine tree biomass potential on different land use in southern Cameroon. Parameters measured for this study were: Dbh of trees above 30cm in diameter, geo spatial data recorded, plot history and description of biomass potential assessments, dead organic biomass, biomass potential of agroforestry landuse system, soil carbon variability, under storey biomass, biomass potential of 5 to 30 cm DBH trees, root biomass potential and soil carbon content.
DOI: 10.5517/ccdc.csd.cc239rgn
title: CCDC 1945791: Experimental Crystal Structure Determination

description: Related Article: Arnold L. Rheingold|2019|CSD Communication|||
DOI: 10.5517/ccdc.csd.cc239rjq
title: CCDC 1945793: Experimental Crystal Structure Determination

description: Related Article: Arnold L. Rheingold|2019|CSD Communication|||
DOI: 10.34725/dvn/24294
title: Replication data for: Quantification of total element concentrations in soils using total X-ray fluorescence spectroscopy (TXRF)

description: Total X-ray fluorescence spectroscopy (TXRF) determines concentrations of major and trace elements in mul- tiple media. We developed and tested a method for the use of TXRF for direct quantification of total element concentrations in soils using an S2 PICOFOX
<sup>TM</sup> spectrometer (Bruker AXS Microanalysis GmbH, Germany). We selected 15 contrasting soil samples from across sub-Saharan Africa for element analysis to calibrate the instrument against concentrations determined using the inductively coupled plasma-mass spectroscopy (ICP-MS) standard method. A consistent underestimation of element concentrations using TXRF compared to ICP-MS reference analysis occurred, indicating that spectrometer recalibration was required. Single-element recalibrat
ion improved the TXRF spectrometer's sensitivity curve. Subsequent analysis revealed that TXRF determined total element concentrations of Al, K, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, and Ga accurately (model effi- cacy/slope close to 1:1 line, an
d R<sup>2 </sup> > 0.80) over a wide range of soil samples. Other elements that could be estimated with an acceptable precision (R<sup>2</sup> > 0.60) compared with ICP-MS although generally somewhat under- or overestimated were P, Ca, As, Rb, Sr, Y, Pr, Ta and Pb. Even after recalibration, compared to ICP-MS the TXRF spectrometer produced underestimations for elements Na, Mg, Ba, Ce, Hf, La, Nd, W and Sm and over- estimations for elements Bi, Tl and Zr. We validated the degree of accuracy of th
e TXRF analytical method after recalibration using an independent set of 20 soil samples. We also tested the accuracy of the analysis using 2 multi-element standards as well as the method repeatability on replicate samples. The resulting total element concentration repeatability for all elements analyzed were within 10% coefficient of variability after the instru- ment recalibration except for Cd and Tl. Our findings demonstrate that TXRF could be used as a rapid screening tool for total element concentrations in soils assuming that sufficient calibration measures are followed.
DOI: 10.34725/dvn/29652
title: TREES FOR FOOD SECURITY PROJECT - BIOPHYSICAL BASELINE DATA

description: The aim of this project is to enhance food security for resource-poor rural people in Eastern Africa through research that underpins national programmes to scale up the use of trees within farming systems in Ethiopia and Rwanda and then scale out successes to relevant agro-ecological zones in Uganda and Burundi.
The specific objectives of the project are:  To characterize target farming landscapes and systems, and develop tools for matching species and management options to sites and circumstances. To generalize predictions of impacts of tree species and management on crop productivity, water resources and nutrients at field, farm and landscape scales to inform scaling up to improve food security and reduce climate risk. To develop effective methods and enabling environments for scaling up and o
ut the adoption of trees on farms. To develop databases and tools for monitoring and evaluation of the impact of scaling up and out the adoption of trees on farms. To enhance capacity and connectivity of national partner institutions (including farmer groups) in developing and promoting locally appropriate options for adoption of farm trees.
DOI: 10.34725/dvn/nhlvwa
title: Replication Data for: Determining bioclimatic space of Himalayan alder for agroforestry systems in Nepal

description: Himalayan alder species are proven to be very useful in traditional as well as contemporary agroforestry practice. These nitrogen-fixing trees are also useful in the land restoration. Therefore, understanding the distribution of Himalayan alder and the potential zone for plantation is meaningful in the agroforestry sector. Suitable climatic zones of Alnus spp. were modelled in MaxEnt software using a subset of least correlated bioclimatic variables for current conditions (1950e2000), topographic variables (DEM derived) and Landuse Landcover (LULC) data. We generated several models and selected the best model against random models using ANOVA and t-test. The environmental variables that best explained the current distribution of the species were identified and used to project into the future. For future projections, ensemble scenarios of climate change projection derived from the results of 19 Earth System Models (ESM) were used. Our model revealed that the most favorable conditions for Alnus nepalensis are in central Nepal in the moist north-west facing slope, whereas for Alnus nitida they are in western Nepal. The major climatic factor that contributes to Alnus species distribution in Nepal appears to be precipitation during the warmest quarter for A. nepalensis and precipitation during the driest quarter for A. nitida. Future projections revealed changes in the probability distribution of these species, as well as where they need conservation and where they can be planted. Also, our model predicts that the distribution of Alnus spp. in hilly regions will remain unchanged, and therefore may represent sites that can be used to revitalize traditional agroforestry systems and extract source material for land restoration.
DOI: 10.34725/dvn/nimbzq
title: Incorporating local knowledge of food security leads to the design of appropriate  food policies

description: This data set contains data on a study titled 'Incorporating local knowledge of food security leads to the design of appropriate  food policies'
DOI: 10.34725/dvn/soenyi
title: Replication Data for Using metabarcoding to ask if easily collected soil and leaf-litter samples can be used as a general biodiversity indicator

description: The targeted sequencing of taxonomically informative genetic markers, sometimes known as metabarcoding, allows eukaryote biodiversity to be measured rapidly, cheaply, comprehensively, repeatedly, and verifiably. Metabarcoding helps to remove the taxonomic impediment, which refers to the great logistical difficulties of describing and identifying species, and thus promises to improve our ability to detect and respond to changes in the natural environment. Now, sampling has become a rate-limiting step in biodiversity measurement, and in an effort to reduce turnaround time, we use arthropod samples from southern China and Vietnam to ask whether soil, leaf litter, and aboveground samples provide similar ecological information. A soil or leaf-litter sample can be collected in minutes, whereas an aboveground sample, such as from Malaise traps or canopy fogging, can require days to set up and run, during which time they are subject to theft, damage, and deliberate contamination. Here we show that while the taxonomic compositions of soil and leaf-litter samples are very different from aboveground samples, both types of samples provide similar ecological information, in terms of ranking sites by species richness and differentiating sites by beta diversity. In fact, leaf-litter samples appear to be as or more powerful than Malaise-trap and canopy-fogging samples at detecting habitat differences. We propose that metabarcoded leaf-litter and soil samples be widely tested as a candidate method for rapid environmental monitoring in terrestrial ecosystems.
DOI: 10.5517/ccdc.csd.cc239rls
title: CCDC 1945795: Experimental Crystal Structure Determination

description: Related Article: Gary J. Balaich and Arnold L. Rheingold|2019|CSD Communication|||
DOI: 10.5517/ccdc.csd.cc239s29
title: CCDC 1945810: Experimental Crystal Structure Determination

description: Related Article: Arnold L. Rheingold|2019|CSD Communication|||
DOI: 10.25592/dgs.corpus-type-69883
title: TOUCHSCREEN1B^ (MEINE DGS – annotiert. Öffentliches Korpus der Deutschen Gebärdensprache, mehrere Releases)
title: TOUCHSCREEN1B^ (MY DGS – annotated. Public Corpus of German Sign Language, several releases)

description: Ein Type aus der Annotation von MEINEDGS mit allen seinen Tokens aus MEINEDGS: The Public DGS Corpus consists of more than 50 hours of video data from the DGS-Korpus project made available together with annotations for research purposes. In this project, data were collected all across Germany in the timeframe 2010-2012. The public corpus shows 330 informants in 4 different age groups (from 18 years on) from 13 different regions. All parts are conversations between two informants in German Sign Language (DGS). The majority of transcripts included cover discussions and reports on Deaf life and personal experiences, although there are examples of other tasks such as story retellings as well.<br>Transcripts are made available in iLex and ELAN format as well as in SRT subtitles format that can be imported in MaxQDA and other analysis tools, together with the mp4 video files in 360p50. Über diese versionsunabhängige DOI ist die jeweils neueste Version des Datensatzes auffindbar.
description: A type from the annotation of MYDGS including all its tokens in MYDGS: Das Öffentliche DGS-Korpus besteht aus mehr als 50 Stunden Video aus dem Projekt DGS-Korpus , die zusammen mit Annotationen für Forschungszwecke zur Verfügung gestellt werden. Die Datenerhebung im Projekt fand im Zeitraum 2010-2012 in ganz Deutschland statt. Das öffentliche Korpus besteht aus Gesprächen jeweils zweier Informantinnen oder Informanten in Deutscher Gebärdensprache. Das Korpus umfasst 330 Informantinnen und Informanten in vier verschiedenen Altersgruppen (ab 18 Jahren) aus 13 verschiedenen Regionen. Der Schwerpunkt der Sammlung liegt auf Transkripten von Diskussionen und Berichten über das Leben Gehörloser sowie persönliche Erfahrungen, sie enthält aber auch Beispiele anderer Erhebungsformate wie Nacherzählungen.<br>Transkripte werden im iLex- und ELAN-Format sowie als SRT-Untertiteldateien (zum Import etwa in MaxQDA) zur Verfügung gestellt. Die zugehörigen MP4-Videodaten sind durchgängig im Format 360p50. This version-dependent DOI allows you to find the latest version of the dataset.
DOI: 10.34725/dvn/25239
title: Replication data for: Community Monitoring for REDD+: International Promises and Field Realities

description: Will community monitoring assist in delivering just and equitable REDD+? We assessed whether local communities can effectively estimate carbon stocks in some of the worldâs most carbon rich forests, using simple field protocols, and we reviewed whether community monitoring exists in current REDD+ pilots. We obtained similar results for forest carbon when measured by communities and professional foresters in 289 vegetation plots in Southeast Asia. Most REDD+ monitoring schemes, however, contain no community involvement. To close the gulf between United Nations Framework Convention on Climate Change texts on involving communities and field implementation realities, we propose greater embedding of community monitoring within national REDD+ pilot schemes, which we argue will lead to a more just REDD+.
DOI: 10.34725/dvn/cnogrb
title: Local knowledge of farmers on drivers and effects of tree cover change in Gobu Sayo woreda, East Wollega, Ethiopia

description: In a study conducted in Gobu Sayo woreda, Ongobo bakanisa kebele. Farmers identified 2 key drivers of land use change which had a huge impact on shaping the community. These changes took place during the Derg regime between 1974-1991 (1967 to 1983 Ethiopian Calendar). These are: Government’s Resettlement and land redistribution Policy and Establishment of Eucalyptus plantations. This study provides an in depth understanding of these changes, adoption of trees on farm, challenges encountered and trees preferred by farmers.
DOI: 10.34725/dvn/djdknm
title: Assessing evolution with time of Dacryodes crassiflora seeds germination under various  nusrsery conditions in humid tropics

description: The study was carried out to assess Dacryodes crassiflora seeds germination ability under various nursery conditions. Two factors were studies: Scarification (Yes or no) and nature of substrate (top soil, sawdust, sand, and a mixed up of sand and top soil).The trial was set up as a randomized complete block design with tree repetitions, 30 seeds per experimental unit. Individual seed germination status  were recorded in the binary form (germinate or not; died or not)  on a weekly basis from the fisrt week after sowing to the fifteen
weeks.
DOI: 10.34725/dvn/tbpgml
title: Evaluation de l’aptitude au marcottage aérien de Dacryodes edulis (g.don) lam. (Burseraceae) a maturation tardive dans le Mbam et Inoubou - Cameroun

description: Dacryodes edulis à maturation tardive  est une espèce forestière ayant des valeurs aussi bien sur le plan économique que social, mais l’on déplore sa faible densité et le vieillissement des individus déjà existants. Jusqu'à ce jour, de nombreuses avancées ont été faites sur les techniques de multiplication végétatives mais les safoutiers "contre saison" n’ont pas fait l’objet de beaucoup d’étude
s.   La quinzaine de mai 2010, à Makénéné, une série d’essai fut conduite dans les champs des paysans afin d’évaluer l’aptitude au marcottage aérien de cet individu sur trois facteurs dont le diamètre de la branche (les classes [2- 3[cm et [4 -5 [cm), l’orientation de la branche (orthotrope, oblique et plagiotrope) et le substrat d’enracinement (la fleur mâle de palmier à huile, le mélange terre noire/sable à proportion égale et la sciure de bois décomposé). 240 marcottes ont été posées sur 30 arbres, dont 10 arbres pour chaque facteur ; soit 60 marcottes au total pour l’essai diamètre et 90 pour chacun des essais orientation et substrat.  Il ressort de ces travaux que l’enracinement des marcottes de Dacryodes edulis à maturation tardive est précoce (12,91 % à trois mois)  pour des arbres âgés (plus de 15 ans) et la répartition des racines primaires autour de la marcotte est indépendante des traitements appliqués. De plus, à 5 mois, le pourcentage d’enracinement des marcottes n’a pas un effet significatif (p= 0,613) pour les branches de classes [2- 3[cm (56,67 ± 4,617%) et [4 -5 [cm (60,00 ± 4,634%) ; cependant, les branches de diamètre 2 à 3 cm favorisent le développement d’un nombre élevé de racines primaires et entrainent une grande mortalité des marcottes. L’orientation de la branche influence significativement l’enracinement des marcottes (p=0,039) ; la mieux adaptée est celle des branches plagiotropes, bien qu’elle présente une mortalité élevée (26,67 ± 4,74%) et un bas nombre de racines primaires (7,95 ± 0,93%). Les marcottes à la sciure ont le grand pourcentage d’enracinement (36,67 ± 4,32%) ; toute fois les marcottes au mélange terre noire/sable présentent le plus grand nombre de racines (15,47 ± 1,45%).    L’on peut donc conclure que l’âge des arbres peut accélérer le processus d’enracinement des marcottes de D. edulis à maturation tardive. Pour le marcottage aérien des safoutiers les branches de gros diamètre, les branches plagiotropes et la sciure de bois décomposé sont certains éléments favorisant un enracinement optimal des marcottes.
DOI: 10.34725/dvn/ye2mr6
title: Growth, flowering and fruiting of Allanblackia floribunda at Mbalmayo field site, Cameroon 2014-2016.

description: Growth, flowering and fruiting
DOI: 10.5517/ccdc.csd.cc239sjr
title: CCDC 1945824: Experimental Crystal Structure Determination

description: Related Article: Liu Jinlong|2019|CSD Communication|||
description: Related Article: Jin-Long Liu, Min Yu, Hai-Bing Liao, Ting Liu, Yan-Hui Tan, Dong Liang, Gui-Jie Zhang|2019|Fitoterapia|139|104408|doi:10.1016/j.fitote.2019.104408
DOI: 10.34725/dvn/24833
title: Fertilizer use patterns in Yunnan Province, China: Implications for agricultural and environmental policy

description: Balancing the need to increase crop yields with the need to reduce the environmental impacts of fertilizers will pose major policy, regulatory, and extension challenges for China. A growing number of studies have demonstrated the potential for improving fertilizer use efficiency in China, but it is not clear how to achieve these efficiency improvements on a larger
scale. The empirical foundation for fertilizer policy in China is still weak, particularly in inland provinces. This paper examines fertilizer use patterns in Yunnan Province, an inland and ecologically important province in Southwest China, drawing on two household surveys. We find that fertilizer application rates in the survey areas are highly heterogeneous, among crops, households, and regions. Managing this diversity poses the largest challenge to fertilizer policy in Yunnan and, by extension, in China. None of the factors that we examine in this study are robust predictors of fertilizer intensity (kg ha-1) in the survey regions, though in one survey there is a strong inverse relationship between farm size and fertilizer intensity. The lack of clearer signals in the survey data, a consequence of heterogeneity in cropping patterns, agroecosystems, and local economies, underscores the importance of locally tailored approaches to fertilizer regulation in China, and of a strong, service-oriented agricultural extension system oriented around sustainable agriculture.
DOI: 10.34725/dvn/25265
title: Assessing the willingness to pay for reliable domestic water supply via catchment management: results from a contingent valuation survey in Nairobi City, Kenya

description: Shortage of domestic water is a key problem in Nairobi. The Sasumua Reservoir supplies 20% of Nairobi'ÃÂÃÂs water. However, reservoir water quantity has been impacted by human activities. Landholders within the catchment have no incentives to take into account this impact in their decision. The objective of this study was to estimate the willingness to pay (WTP) of Nairobi residents for reliable domestic water via catchment conservation. Data were collected through face-to-face surveys. A censored regression model was employed to estimate the WTP. Results show that monthly mean WTP of an average household is about 275 Kenya shillings; income
, education, and age are the key variables affecting WTP; and lack of an appropriate institutional regime is the major public concern that could hinder implementation of market-based schemes
DOI: 10.34725/dvn/29518
title: Replication data for: Assessing market potential of Agroforestry tree seedlings in Western Kenya

description: In this study, Porter’s framework is used to analyse the forces that coordinate and control the market for agroforestry tree seedlings in the Nyando basin in Western Kenya where smallholder farmers were assisted by non-governmental and research organisations to start tree seedling nurseries, with a view to fostering adoption of agroforestry in the region. In addition, financial viability of the enterprise is assessed and the resources and interventions required to improve the operators’ competitiveness and make the enterprise sustainable are identified. Primary data collected from eight nursery operators and sixty agroforestry farmers are used and supplemented with secondary information obtained from relevant literature to gain an insight into the tree seedling industry within and outside the region. The results indicate that the tree seedling industry is highly competitive and is characterised by several small-scale operators who employ similar strategies and produce and sell nearly homogenous products. Consequently, competition is based on price rather than on strategies that require capital investments such as branding, product differentiation and product promotion. The enterprise is financially viable but the gross margins, particularly those of timber tree seedlings, are sensitive to low seedling prices suggesting that competitors are exerting pressure on prices and profitability. Thus, to gain an edge over the competitors, the small-scale operators need to build competitive advantage by adopting strategies that allow them to charge higher prices for their products, maintain customer brand loyalty and understand the coordination, control and relationships within the industry.