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Dive into the research topics where Madelene Ostwald is active.

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Featured researches published by Madelene Ostwald.


International Journal of Sustainability in Higher Education | 2008

An international comparative analysis of sustainability transformation across seven universities

Didac Ferrer-Balas; J Adachi; S Banas; Cliff I. Davidson; A Hoshikoshi; A Mishra; Y Motodoa; M Onga; Madelene Ostwald

Purpose – The purpose of this paper is to identify the key aspects of transformation of universities towards sustainability, such as the ideal characteristics of the “sustainable university”, and the drivers and barriers in the transformation, by comparing the strategies of seven universities world-wide. Design/methodology/approach – A systems transformation analysis of seven case studies has been applied through a self-evaluation based on the tridimensional Framework-Level-Actors (FLA) method. Findings – The study shows that none of the three dimensions of change is predominant over the others. The main barrier to be overcome is the lack of incentive structure for promoting changes at the individual level. The main drivers for change are the presence of “connectors” with society, the existence of coordination bodies and projects, and the availability of funding, all of which are important for progress. Enhancing interdisciplinarity is a strategic objective at almost all of these universities, while transformative learning is less present. A common characteristic for most of the institutions is establishing and supporting networks of expertise within the universities. These universities show important strategic efforts and initiatives that drive and nucleate change for sustainable development, the result of a combination of drivers. Practical implications – The FLA-method has proved useful for being used at the level of comparing case-studies through a bird’s-eye perspective. Originality/value – The paper demonstrates the application of a simple tool that gives a global perspective on transformational strategies used in seven cases world-wide in the search for commonalities and differences.


Archive | 2008

Carbon inventory methods : handbook for greenhouse gas inventory, carbon mitigation and roundwood production projects

N. H. Ravindranath; Madelene Ostwald

Carbon inventory requiring estimation of carbon dioxide emissions and removals in land-use categories for national greenhouse gas inventory and changes in stocks of carbon in projects aimed at climate change mitigation has become increasingly important in global efforts to address climate change. Hence, there is a need for a handbook that provides guidelines and methods required for carbon inventory.Carbon Inventory Methods Handbook provides detailed step-by-step information on sampling procedures, field and laboratory measurements, application of remote sensing and GIS techniques, modeling, and calculation procedures along with sources of data for carbon inventory.The unique feature of this handbook is that it provides practical guidance on carbon inventory methods for four kinds of projects, namely, 1) development, implementation and monitoring of carbon mitigation in forest, agriculture and grassland sectors, 2) national greenhouse gas inventory in agriculture, forest, and other land-use categories, 3) forest, grassland and agroforestry development and 4) commercial and community forestry roundwood production.Carbon Inventory Methods Handbook is an essential source of reference to universities and research institutions dealing with climate change, consultancy and non-governmental organizations involved in developing and monitoring land-based mitigation projects, donor agencies funding carbon mitigation projects, national greenhouse gas inventory agencies, United Nations agencies and mechanisms such as Clean Development Mechanism and Global Environment Facility, roundwood production and land reclamation project developers and managers, and forest departments.


Remote Sensing | 2015

Mapping Tree Canopy Cover and Aboveground Biomass in Sudano-Sahelian Woodlands Using Landsat 8 and Random Forest

Martin Karlson; Madelene Ostwald; Heather Reese; Josias Sanou; Boalidioa Tankoano; Eskil Mattsson

Accurate and timely maps of tree cover attributes are important tools for environmental research and natural resource management. We evaluate the utility of Landsat 8 for mapping tree canopy cover (TCC) and aboveground biomass (AGB) in a woodland landscape in Burkina Faso. Field data and WorldView-2 imagery were used to assemble the reference dataset. Spectral, texture, and phenology predictor variables were extracted from Landsat 8 imagery and used as input to Random Forest (RF) models. RF models based on multi-temporal and single date imagery were compared to determine the influence of phenology predictor variables. The effect of reducing the number of predictor variables on the RF predictions was also investigated. The model error was assessed using 10-fold cross validation. The most accurate models were created using multi-temporal imagery and variable selection, for both TCC (five predictor variables) and AGB (four predictor variables). The coefficient of determination of predicted versus observed values was 0.77 for TCC (RMSE = 8.9%) and 0.57 for AGB (RMSE = 17.6 tons∙ha−1). This mapping approach is based on freely available Landsat 8 data and relatively simple analytical methods, and is therefore applicable in woodland areas where sufficient reference data are available.


Environmental Research Letters | 2013

Methods for the quantification of GHG emissions at the landscape level for developing countries in smallholder contexts

E. Milne; Henry Neufeldt; Todd S. Rosenstock; Mike Smalligan; Carlos Eduardo Pellegrino Cerri; Daniella Malin; Mark Easter; Martial Bernoux; Stephen M. Ogle; Felipe Casarim; Timothy Pearson; David Neil Bird; Evelyn Steglich; Madelene Ostwald; Karolien Denef; Keith Paustian

Landscape scale quantification enables farmers to pool resources and expertise. However, the problem remains of how to quantify these gains. This article considers current greenhouse gas (GHG) quantification methods that can be used in a landscape scale analysis in terms of relevance to areas dominated by smallholders in developing countries. In landscape scale carbon accounting frameworks, measurements are an essential element. Sampling strategies need careful design to account for all pools/fluxes and to ensure judicious use of resources. Models can be used to scale-up measurements and fill data gaps. In recent years a number of accessible models and calculators have been developed which can be used at the landscape scale in developing country areas. Some are based on the Intergovernmental Panel on Climate Change (IPCC) method and others on dynamic ecosystem models. They have been developed for a range of different purposes and therefore vary in terms of accuracy and usability. Landscape scale assessments of GHGs require a combination of ground sampling, use of data from census, remote sensing (RS) or other sources and modelling. Fitting of all of these aspects together needs to be performed carefully to minimize uncertainties and maximize the use of scarce resources. This is especially true in heterogeneous landscapes dominated by smallholders in developing countries.


Journal of Environmental Management | 2012

REDD+ readiness implications for Sri Lanka in terms of reducing deforestation

Eskil Mattsson; U. Martin Persson; Madelene Ostwald; S.P. Nissanka

Any system to compensate countries for reduced emissions from deforestation and forest degradation (REDD+) requires a historical reference level against which future performance can be measured. Here we examine the possibilities Sri Lanka, a small forest country with limited data on forest carbon stocks, has to get ready for REDD+. We construct a historical reference level using available forest inventory data combined with updated 2008 and 2009 in situ carbon density data for Sri Lankan forests. Furthermore, we use a combination of qualitative and quantitative data to attribute the clearing of Sri Lankan forests in the latest years for which national forest inventory data are available, 1992-1996, to various proximate drivers and to estimate the opportunity cost of forest conservation. We estimate that baseline deforestation emissions in Sri Lanka amounted to 17MtCO(2)yr(-1) in the 1992-1996 period, but conclude that it is challenging for Sri Lanka to produce a robust and accurate reference level due to the lack of nationally based inventories. We find that the majority of forest clearing (87%) is due to small-scale, rainfed farming, with the two other major drivers being rice and tea cultivation. Further, Sri Lankan revenues from REDD+ participation could be substantial, but they are sensitive to REDD+ policy transaction cost, highly uncertain timber revenues, and particularly the carbon price paid for emission reductions. The latter needs to be higher than


Sensors | 2014

Tree Crown Mapping in Managed Woodlands (Parklands) of Semi-Arid West Africa Using WorldView-2 Imagery and Geographic Object Based Image Analysis

Martin Karlson; Heather Reese; Madelene Ostwald

5-10/tCO(2) if there are to be substantial incentives for Sri Lanka to participate in REDD+. There is, however, a large gap in the knowledge of deforestation drivers that needs to be filled if Sri Lanka is to formulate an effective policy response to forest degradation in REDD+. For successful REDD+ implementation in Sri Lanka to happen, technological assistance, readiness assistance, and continued political momentum are crucial.


Geografiska Annaler Series A-physical Geography | 2007

RELATION BETWEEN VEGETATION CHANGES, CLIMATE VARIABLES AND LAND‐USE POLICY IN SHAANXI PROVINCE, CHINA

Madelene Ostwald; Elisabeth Simelton; Deliang Chen; Anlin Liu

Detailed information on tree cover structure is critical for research and monitoring programs targeting African woodlands, including agroforestry parklands. High spatial resolution satellite imagery represents a potentially effective alternative to field-based surveys, but requires the development of accurate methods to automate information extraction. This study presents a method for tree crown mapping based on Geographic Object Based Image Analysis (GEOBIA) that use spectral and geometric information to detect and delineate individual tree crowns and crown clusters. The method was implemented on a WorldView-2 image acquired over the parklands of Saponé, Burkina Faso, and rigorously evaluated against field reference data. The overall detection rate was 85.4% for individual tree crowns and crown clusters, with lower accuracies in areas with high tree density and dense understory vegetation. The overall delineation error (expressed as the difference between area of delineated object and crown area measured in the field) was 45.6% for individual tree crowns and 61.5% for crown clusters. Delineation accuracies were higher for medium (35–100 m2) and large (≥100 m2) trees compared to small (<35 m2) trees. The results indicate potential of GEOBIA and WorldView-2 imagery for tree crown mapping in parkland landscapes and similar woodland areas.


Pastoralism | 2015

Enclosures in West Pokot, Kenya: Transforming land, livestock and livelihoods in drylands

Gert Nyberg; Per Knutsson; Madelene Ostwald; Ingrid Öborn; Ewa Wredle; David Jakinda Otieno; Stephen Mwangi Mureithi; Peter Mwangi; Mohammed Yahya Said; Magnus Jirström; Antonia Grönvall; Julia Wernersson; Sara Svanlund; Laura Saxer; Lotje Geutjes; Vera Karmebäck; John Ndung’u Wairore; Regina Wambui; Jan de Leeuw; Anders Malmer

Abstract Shaanxi Province in China has been exposed to climate variability and dramatic land‐use policies. The aim here is to examine vegetation changes in this area on a regional scale from 2000 to 2004 in relation to land‐use changes and climate traits. The data in this assessment include remote sensing information from moderate‐resolution imaging spectro‐radiometer normalized difference vegetation index from 2000 to 2004, and climate data (precipitation and temperature) from 1956 to 2000. The results show an increase in vegetation production from 2000 to 2004, particularly in the north, which cannot be explained solely by climate impacts. Since the vegetation in the north is more dependent on climate variation than the other parts of Shaanxi due to more serious water limitation, the results suggest that the large‐scale land‐use policy implemented over the last decade, with a focus on northern Shaanxi, is possibly having an impact on the overall vegetation.


AMBIO: A Journal of the Human Environment | 2001

Impact of plantations on forest use and forest status in Orissa, India.

Gunnar Köhlin; Madelene Ostwald

Dryland livestock production systems are changing in many parts of the world, as a result of growing human populations and associated pressure on water and land. Based on a combination of social and natural science methods, we studied a 30-year transformation process from pastoralism to a livestock-based agro-pastoral system in northwestern Kenya, with the overall aim to increase the understanding of the ongoing transition towards intensified agro-pastoralist production systems in dryland East Africa.Key to this transformation was the use of enclosures for land rehabilitation, fodder production, and land and livestock management. Enclosures have more soil carbon and a higher vegetation cover than adjacent areas with open grazing. The level of adoption of enclosures as a management tool has been very high, and their use has enabled agricultural diversification, e.g. increased crop agriculture, poultry production and the inclusion of improved livestock. Following the use of enclosures, livelihoods have become less dependent on livestock migration, are increasingly directed towards agribusinesses and present new opportunities and constraints for women. These livelihood changes are closely associated with, and depend on, an ongoing privatization of land under different tenure regimes.The results indicate that the observed transformation provides opportunities for a pathway towards a sustainable livestock-based agro-pastoral system that could be valid in many dryland areas in East Africa. However, we also show that emergent risks of conflicts and inequalities in relation to land, triggered by the weakening of collective property rights, pose a threat to the sustainability of this pathway.


International Journal of Applied Earth Observation and Geoinformation | 2016

Assessing the potential of multi-seasonal WorldView-2 imagery for mapping West African agroforestry tree species

Martin Karlson; Madelene Ostwald; Heather Reese; Hugues Roméo Bazié; Boalidioa Tankoano

Abstract In Orissa 100 thousand ha of village plantations were established from 1985 to 1992 as an aid project to support the subsistence needs of rural poor and to relieve heavy pressure on the natural forests. The aim of this paper is to examine the welfare and environmental effects of these village plantations. To do this, extensive data collection was needed which included both household utilization of different sources of biomass as well as remote-sensing information, to establish the status of the vegetation and its spatial location vis-a-vis the users. The study shows that plantations have the potential for substantial welfare improvements for the target population, especially women, through increased consumption of biomass, decreased time for collection and decreased pressure on natural forests. However, interventions need to be very selective in order to be successful, with special consideration given to plantation location compared to natural forest.

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Eskil Mattsson

University of Gothenburg

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Matilda Palm

University of Gothenburg

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Göran Berndes

Chalmers University of Technology

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N. H. Ravindranath

Indian Institute of Science

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Per Knutsson

University of Gothenburg

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S.P. Nissanka

University of Peradeniya

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Deliang Chen

University of Gothenburg

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Lisa Westholm

University of Gothenburg

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