This page has only limited features, please log in for full access.

Unclaimed
Marianna Siegmund-Schultze
Environmental Assessment and Planning Research Group, Berlin Institute of Technology (TU Berlin), Berlin, Germany

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 18 June 2020 in Ecological Economics
Reads 0
Downloads 0

Transdisciplinary research is a well-recognised approach to address complex real-world problems. However, the literature on a central aspect of transdisciplinarity, namely stakeholder involvement, largely lacks a reflection on its objectives. In response, we present a framework defining four general rationales for stakeholder involvement: normative, substantive, social-learning, and implementation objectives. We demonstrate the applicability of the framework and analyse how the design and processes of three collaborative research projects dealing with sustainable land management in Southern Africa, Southeast Asia, and South America were affected by motivations to include stakeholders. Our assessment indicates that at the projects' outset, many scientists pursued a normative rationale and saw stakeholder involvement as a burden. In the course of the projects, the substantive objective became more relevant as being closely linked to the core mandate of scientists. The projects also aimed for social learning and implementation processes, which, however, did not remain uncontested among team members. Overall, our study indicates that jointly negotiating, clarifying, communicating, and reflecting the underlying objectives of stakeholder involvement can help developing more effective interaction strategies and clarifying expectations. The conceptual framework can guide a systematic reflective and reflexive practise and support the planning and co-designing of future transdisciplinary research projects.

ACS Style

Laura Schmidt; Thomas Falk; Marianna Siegmund-Schultze; Joachim H. Spangenberg. The Objectives of Stakeholder Involvement in Transdisciplinary Research. A Conceptual Framework for a Reflective and Reflexive Practise. Ecological Economics 2020, 176, 106751 .

AMA Style

Laura Schmidt, Thomas Falk, Marianna Siegmund-Schultze, Joachim H. Spangenberg. The Objectives of Stakeholder Involvement in Transdisciplinary Research. A Conceptual Framework for a Reflective and Reflexive Practise. Ecological Economics. 2020; 176 ():106751.

Chicago/Turabian Style

Laura Schmidt; Thomas Falk; Marianna Siegmund-Schultze; Joachim H. Spangenberg. 2020. "The Objectives of Stakeholder Involvement in Transdisciplinary Research. A Conceptual Framework for a Reflective and Reflexive Practise." Ecological Economics 176, no. : 106751.

Article
Published: 25 February 2020 in Environment, Development and Sustainability
Reads 0
Downloads 0

Semiarid regions are often secondary on the national to global (scientific) agenda, especially if abundant vegetation elsewhere draws attention and the local population is considered backwards thinking and poverty-stricken. The Caatinga, our case study, is such a region, home to millions of Brazilians and a vast biodiversity. Unfortunately, a widely uncoordinated land use change and biodiversity decline are happening, while farmers’ livelihoods are at risk. We hypothesize substantial weaknesses in the current governance practices. To explore governance of the less noticed region, we conducted interviews and field visits and complemented the findings with the literature and internet resources. Our multi-method approach combines the social–ecological systems framework with constellation analysis and dynamic modeling. The aim was to understand the current state of governance in the region and identify clues for more sustainable land management. The use and conservation of Caatinga are negotiated at multiple levels, which are only sporadically interlinked. The conversion of forest land into alternative land uses shifts and shares responsibility among different sectors, while cross-sectoral cooperation is rarely observed. The region and its population face massive prejudices. Obstructing attitudes, such as thinking in dichotomies, and paternalistic and opportunistic approaches, are being addressed by some new coalitions taking alternative action. It is unlikely that these isolated initiatives will converge by themselves to a larger transformation toward sustainable resource use. There is a need to bring the dispersed actions in a more focused and coordinated approach, integrating socioeconomic and ecological concerns, values, and partnerships.

ACS Style

Marianna Siegmund-Schultze. A multi-method approach to explore environmental governance: a case study of a large, densely populated dry forest region of the neotropics. Environment, Development and Sustainability 2020, 23, 1539 -1562.

AMA Style

Marianna Siegmund-Schultze. A multi-method approach to explore environmental governance: a case study of a large, densely populated dry forest region of the neotropics. Environment, Development and Sustainability. 2020; 23 (2):1539-1562.

Chicago/Turabian Style

Marianna Siegmund-Schultze. 2020. "A multi-method approach to explore environmental governance: a case study of a large, densely populated dry forest region of the neotropics." Environment, Development and Sustainability 23, no. 2: 1539-1562.

Journal article
Published: 01 January 2020 in Revista Facultad Nacional de Agronomía Medellín
Reads 0
Downloads 0

Jatropha seed is a biomass suitable for bioenergy production that can be produced by smallholders, even on marginal lands. However, the current oilseed production is too low to meet the needs of the planned renewable electricity system in the Galapagos Islands. Pruning and fertilization are management options that can be used to increase the dry seed yields. The effects of both treatments were tested in a split-plot design with jatropha trees, which were monitored during a three-year production period. The average seed production was 643±58 kg ha-1 year-1 in the unpruned trees and 696±50 kg ha-1 year-1 in the pruned trees. Although this difference is small, it is expected to increase over time. The pruned trees developed more slowly than the unpruned trees but showed higher (and still increasing) yields at the end of the three-year test period, while the unpruned trees appeared to have reached their maximum production by the second year of the trial. The low fertilizer doses approved by the smallholders did not have a significant impact on the dry seed yield, and the management options that show benefits in the long term are generally not accepted or adopted by them. Cost-effective nutrient enhancement should be investigated, such as inoculation with arbuscular mycorrhizal fungi.

ACS Style

Álvaro Cañadas-López; Diana Rade-Loor; Marianna Siegmund-Schultze; Jesús Vargas-Hernández; Christian Wehenkel. Pruning and fertilization effects on Jatropha yields under smallholder’s conditions in a Tropical Dry Forest from Ecuador. Revista Facultad Nacional de Agronomía Medellín 2020, 73, 9089 -9097.

AMA Style

Álvaro Cañadas-López, Diana Rade-Loor, Marianna Siegmund-Schultze, Jesús Vargas-Hernández, Christian Wehenkel. Pruning and fertilization effects on Jatropha yields under smallholder’s conditions in a Tropical Dry Forest from Ecuador. Revista Facultad Nacional de Agronomía Medellín. 2020; 73 (1):9089-9097.

Chicago/Turabian Style

Álvaro Cañadas-López; Diana Rade-Loor; Marianna Siegmund-Schultze; Jesús Vargas-Hernández; Christian Wehenkel. 2020. "Pruning and fertilization effects on Jatropha yields under smallholder’s conditions in a Tropical Dry Forest from Ecuador." Revista Facultad Nacional de Agronomía Medellín 73, no. 1: 9089-9097.

Journal article
Published: 26 August 2019 in Forests
Reads 0
Downloads 0

Balsa trees are native to neotropical forests and frequently grow on fallow, degraded land. Balsa can be used for economic and ecological rehabilitation of farmland with the aim of restoring native forest ecosystems. Although Ecuador is the world’s largest producer of balsa, there is a lack of knowledge about production indicators for management of balsa stands in the country. The aim of this study was to develop growth and yield models (i.e., site index (SI) curves and stem volume models) for balsa plantations in the coastal lowlands of Ecuador. Balsa trees growing in 2161 plots in seven provinces were sampled. Here we present the first growth and yield models for the native, although underutilized, balsa tree. Three curve models were fitted to determine SI for balsa stands, differentiating five site quality classes. Eight volume models were compared to identify the best fit model for balsa stands. The mean annual increment was used to assess balsa production. The generalized algebraic difference approach (GADA) equation yielded one of the best results for the height–age and diameter–age models. The Newnham model was the best volume model for balsa in this comparative study. The maximum annual increment (i.e., for the best stand index) was reached in the second year of plantation. The fitted models can be used to support management decisions regarding balsa plantations. However, the models are preliminary and must be validated with independent samples. Nevertheless, the very fast development of the native balsa tree is particularly promising and should attract more attention from forest owners and politicians.

ACS Style

Álvaro Cañadas-López; Diana Rade-Loor; Marianna Siegmund-Schultze; Geovanny Moreira-Muñoz; J. Jesús Vargas-Hernández; Christian Wehenkel. Growth and Yield Models for Balsa Wood Plantations in the Coastal Lowlands of Ecuador. Forests 2019, 10, 733 .

AMA Style

Álvaro Cañadas-López, Diana Rade-Loor, Marianna Siegmund-Schultze, Geovanny Moreira-Muñoz, J. Jesús Vargas-Hernández, Christian Wehenkel. Growth and Yield Models for Balsa Wood Plantations in the Coastal Lowlands of Ecuador. Forests. 2019; 10 (9):733.

Chicago/Turabian Style

Álvaro Cañadas-López; Diana Rade-Loor; Marianna Siegmund-Schultze; Geovanny Moreira-Muñoz; J. Jesús Vargas-Hernández; Christian Wehenkel. 2019. "Growth and Yield Models for Balsa Wood Plantations in the Coastal Lowlands of Ecuador." Forests 10, no. 9: 733.

Journal article
Published: 09 August 2019 in Sustainability
Reads 0
Downloads 0

Land management needs to cope with persistent environmental and societal changes. This requires functional governance systems. The purpose of this research is to develop a good governance framework for the implementation of sustainable land management. Good governance theory is extensive, although its operationalization remains difficult. We derived a set of good governance attributes from the literature: (i) the functionality of the regulatory framework, (ii) the legitimacy and accountability of the actors, (iii) the fairness and transparency of the decision-making processes, and (iv) quality control and adaptiveness. These constitute a framework which, supported by guiding questions, facilitates the evaluation of governance attributes to assess sustainable land management practices. We applied the scheme to a case study in Northeast Brazil regarding sustainable land management where biological pest control is considered to be a biodiversity-related ecosystem service. Since its adoption often falls short of expectations, we scrutinized its governance system. First, experts answered our guiding questions, and second, we involved local stakeholders in the discussion of good governance attributes through the participatory approach of constellation analysis. Trust in agricultural consultants and issues of the practical application of pest control turned out to be crucial. The workshop participants requested a model farm to build more trust and experience. There was considerable demand for policy at the national planning level to formulate and monitor the content of the agricultural advisory program. Our conceptualized framework of good governance questions provides systematization for planning and steering the implementation of sustainable land management practices.

ACS Style

Verena Rodorff; Marianna Siegmund-Schultze; Maike Guschal; Sonja Hölzl; Johann Köppel. Good Governance: A Framework for Implementing Sustainable Land Management, Applied to an Agricultural Case in Northeast-Brazil. Sustainability 2019, 11, 4303 .

AMA Style

Verena Rodorff, Marianna Siegmund-Schultze, Maike Guschal, Sonja Hölzl, Johann Köppel. Good Governance: A Framework for Implementing Sustainable Land Management, Applied to an Agricultural Case in Northeast-Brazil. Sustainability. 2019; 11 (16):4303.

Chicago/Turabian Style

Verena Rodorff; Marianna Siegmund-Schultze; Maike Guschal; Sonja Hölzl; Johann Köppel. 2019. "Good Governance: A Framework for Implementing Sustainable Land Management, Applied to an Agricultural Case in Northeast-Brazil." Sustainability 11, no. 16: 4303.

Review article
Published: 10 June 2019 in Energy Systems
Reads 0
Downloads 0

The São Francisco River Basin in Brazil’s Northeast region suffered from a serious multi-year drought, which started in 2012. This drought was characterized by long periods of water stress, variability and unpredictability of levels and flows of rivers and reservoirs, decreases in hydropower generation, and rising of conflicts between agricultural and electrical sectors. Besides, the electricity sector faced a crisis due to its dependency on hydroelectricity generation. Applying a Multi-Criteria Decision Analysis (MCDA) can contribute to resolve such conflicts. Particular challenges are establishing transparent rules for water level management at the dams and securing electricity supply. Ultimately, identifying options to invest in sustainable power sources may positively impact the regional electricity matrix. We used Soft Systems Methodology to structure the decision-making context and set the main objectives to be considered in the MCDA. Different scenarios of reservoir management were simulated using the Soil and Water Integrated Model and Incomplete Pairwise Comparison, while bibliographic research and expert interviews led to the selection of indicators for structuring the MCDA. We present projections for hydropower generation and meeting of water demands of further users, based on two climate change projections. The driest scenario shows a reduction in hydropower generation, indicating the necessity to reconfigure the composition of electricity sources, considering economic, technical and social-environmental constraints. These elements of the structuring phase are prerequisites for the evaluation phase of the MCDA.

ACS Style

Clécio Barbosa Souza Júnior; Hagen Koch; Marianna Siegmund-Schultze; Johann Köppel. An exploratory scenario analysis of strategic pathways towards a sustainable electricity system of the drought-stricken São Francisco River Basin. Energy Systems 2019, 12, 563 -602.

AMA Style

Clécio Barbosa Souza Júnior, Hagen Koch, Marianna Siegmund-Schultze, Johann Köppel. An exploratory scenario analysis of strategic pathways towards a sustainable electricity system of the drought-stricken São Francisco River Basin. Energy Systems. 2019; 12 (3):563-602.

Chicago/Turabian Style

Clécio Barbosa Souza Júnior; Hagen Koch; Marianna Siegmund-Schultze; Johann Köppel. 2019. "An exploratory scenario analysis of strategic pathways towards a sustainable electricity system of the drought-stricken São Francisco River Basin." Energy Systems 12, no. 3: 563-602.

Journal article
Published: 02 January 2019 in Ribagua
Reads 0
Downloads 0
ACS Style

Marianna Siegmund-Schultze; Edvânia Torres Aguiar Gomes; Sarah Gottwald; Verena Rodorff. O que é uma boa participação pública? Conceitos, desafios e guias para reflexão. Ribagua 2019, 6, 111 -122.

AMA Style

Marianna Siegmund-Schultze, Edvânia Torres Aguiar Gomes, Sarah Gottwald, Verena Rodorff. O que é uma boa participação pública? Conceitos, desafios e guias para reflexão. Ribagua. 2019; 6 (1):111-122.

Chicago/Turabian Style

Marianna Siegmund-Schultze; Edvânia Torres Aguiar Gomes; Sarah Gottwald; Verena Rodorff. 2019. "O que é uma boa participação pública? Conceitos, desafios e guias para reflexão." Ribagua 6, no. 1: 111-122.

Journal article
Published: 04 November 2018 in Journal of Agriculture, Food Systems, and Community Development
Reads 0
Downloads 0
ACS Style

Marianna Siegmund-Schultze. Ending Hunger is Possible – Institutional Change Matters. Journal of Agriculture, Food Systems, and Community Development 2018, 8, 1 -3.

AMA Style

Marianna Siegmund-Schultze. Ending Hunger is Possible – Institutional Change Matters. Journal of Agriculture, Food Systems, and Community Development. 2018; 8 (3):1-3.

Chicago/Turabian Style

Marianna Siegmund-Schultze. 2018. "Ending Hunger is Possible – Institutional Change Matters." Journal of Agriculture, Food Systems, and Community Development 8, no. 3: 1-3.

Journal article
Published: 04 October 2018 in Forests
Reads 0
Downloads 0

Jatropha is promoted as a pro-poor bioenergy plant, while basic information about its productivity, age of maximum production, and oil content are missing. This study aims to determine the seed yield (dry weight) for three INIAP elite jatropha accessions, and to evaluate the changes in physical and chemical seed traits at the different fruit ripening stage in a split-plot design. Maximum seed production occurred four years after planting for the accessions CP041 and CP052, while for accession CP054, it occurred after the first year. CP041 was the most productive, with a mean of 316.46 g tree−1 year−1 (±76.50) over the 8-year study period. No significant differences in oil content were found among accessions, fruit ripening stage, and their respective interactions. Seed moisture content decreased drastically as the fruit ripening stage increased, from 40.5% ± 1.0% at fruit ripening stage 1 (greenish-yellow) down to 13.8% ± 0.4% at fruit ripening stage 4 (black-brown). No significant differences in seed weight were found among accessions, but it decreased as maturation progressed. Yellow fruits (stage 2) were the heaviest (62.4 g ± 1.5 g) and the black-brown fruits the lightest (44.3 g ± 1.9 g). The oil content (%) increased with seed weight up to the point of 58.3 g, but then decreased for heavier seeds.

ACS Style

Álvaro Cañadas-López; Diana Yasbhet Rade-Loor; Marianna Siegmund-Schultze; Marys Beatriz Iriarte Vera; Juan Manuel Domínguez-Andrade; Jesús Vargas-Hernández; Christian Wehenkel. Productivity and Oil Content in Relation to Jatropha Fruit Ripening under Tropical Dry-Forest Conditions. Forests 2018, 9, 611 .

AMA Style

Álvaro Cañadas-López, Diana Yasbhet Rade-Loor, Marianna Siegmund-Schultze, Marys Beatriz Iriarte Vera, Juan Manuel Domínguez-Andrade, Jesús Vargas-Hernández, Christian Wehenkel. Productivity and Oil Content in Relation to Jatropha Fruit Ripening under Tropical Dry-Forest Conditions. Forests. 2018; 9 (10):611.

Chicago/Turabian Style

Álvaro Cañadas-López; Diana Yasbhet Rade-Loor; Marianna Siegmund-Schultze; Marys Beatriz Iriarte Vera; Juan Manuel Domínguez-Andrade; Jesús Vargas-Hernández; Christian Wehenkel. 2018. "Productivity and Oil Content in Relation to Jatropha Fruit Ripening under Tropical Dry-Forest Conditions." Forests 9, no. 10: 611.

Editorial
Published: 12 September 2018 in Regional Environmental Change
Reads 0
Downloads 0
ACS Style

Marianna Siegmund-Schultze; Maria Do Carmo Sobral; Márcia M. G. Alcoforado De Moraes; Jarcilene S. Almeida-Cortez; José Roberto Gonçalves de Azevedo; Ana Lúcia Candeias; Arne Cierjacks; Edvânia T. A. Gomes; Günter Gunkel; Volkmar Hartje; Fred F. Hattermann; Martin Kaupenjohann; Hagen Koch; Johann Köppel. The legacy of large dams and their effects on the water-land nexus. Regional Environmental Change 2018, 18, 1883 -1888.

AMA Style

Marianna Siegmund-Schultze, Maria Do Carmo Sobral, Márcia M. G. Alcoforado De Moraes, Jarcilene S. Almeida-Cortez, José Roberto Gonçalves de Azevedo, Ana Lúcia Candeias, Arne Cierjacks, Edvânia T. A. Gomes, Günter Gunkel, Volkmar Hartje, Fred F. Hattermann, Martin Kaupenjohann, Hagen Koch, Johann Köppel. The legacy of large dams and their effects on the water-land nexus. Regional Environmental Change. 2018; 18 (7):1883-1888.

Chicago/Turabian Style

Marianna Siegmund-Schultze; Maria Do Carmo Sobral; Márcia M. G. Alcoforado De Moraes; Jarcilene S. Almeida-Cortez; José Roberto Gonçalves de Azevedo; Ana Lúcia Candeias; Arne Cierjacks; Edvânia T. A. Gomes; Günter Gunkel; Volkmar Hartje; Fred F. Hattermann; Martin Kaupenjohann; Hagen Koch; Johann Köppel. 2018. "The legacy of large dams and their effects on the water-land nexus." Regional Environmental Change 18, no. 7: 1883-1888.

Research article
Published: 31 August 2018 in Ecohydrology
Reads 0
Downloads 0

Water management is important for delivering water for different users and uses. Reservoirs are built to overcome the stochastic nature of river flows and to increase the reliability of water supply. Reservoir operation affects the ecology of downstream river sections and there has been a discussion of a more ecologically oriented flow regime, while ecosystems of reservoirs themselves are rarely taken into account. For reservoirs it is important to identify multiple impacts and tradeoffs of different management options. This information can be used in a multidisciplinary and multi‐participatory decision‐making process to assess the management options. This study develops, applies and discusses reservoir operation options for the São Francisco River basin (Brazil): i) Reference; ii) Environmental discharge; iii) Reduced daily water level variation; and iv) Reduced annual water level variation. In the simulation study the operation option with reduced daily water level variation in reservoirs turned out to be the most flexible, guaranteeing hydropower generation and water supply in the dry season, while considering the ecology of the reservoirs and rivers. The simulations are exemplary for decision makers, requiring further assessment after agreeing on priority setting.

ACS Style

Hagen Koch; Florian Selge; José Roberto G. De Azevedo; Gerald N. Souza Da Silva; Marianna Siegmund-Schultze; Fred F. Hattermann. Reservoir operation and environmental water demand: Scenarios for the Sub-Middle and Lower São Francisco River basin, Brazil. Ecohydrology 2018, 11, e2026 .

AMA Style

Hagen Koch, Florian Selge, José Roberto G. De Azevedo, Gerald N. Souza Da Silva, Marianna Siegmund-Schultze, Fred F. Hattermann. Reservoir operation and environmental water demand: Scenarios for the Sub-Middle and Lower São Francisco River basin, Brazil. Ecohydrology. 2018; 11 (8):e2026.

Chicago/Turabian Style

Hagen Koch; Florian Selge; José Roberto G. De Azevedo; Gerald N. Souza Da Silva; Marianna Siegmund-Schultze; Fred F. Hattermann. 2018. "Reservoir operation and environmental water demand: Scenarios for the Sub-Middle and Lower São Francisco River basin, Brazil." Ecohydrology 11, no. 8: e2026.

Journal article
Published: 10 August 2018 in Ecosystem Services
Reads 0
Downloads 0

Ecosystems around the world generate a wide range of services. Often, there are trade-offs in ecosystem service provision. Managing such trade-offs requires governance of interdependent action situations. We distinguished between (1) enhancing action situations where beneficiaries create, maintain, or improve an ESS and (2) appropriation action situations where actors subtract from a flow of ESS. We classified ESSs in order to identify focal action situations and link them to ESS governance types which are likely to strengthen sustainable ecosystem management. The classification is applied to six forest cases in Asia, Africa and Latin America. Our results confirm that ecosystem management, which more strongly supports the provision of public goods and common pool resources, is often under strong pressure to be transformed into systems that mainly provide private goods. This can be partly explained by incentive constellations in the action situations of public goods and common pool resources. Therefore, governance has to be adapted to specific ESSs. ESS governance needs to identify institutions which best fit to different ESSs and to harmonize them for all the ESSs provided by the system. Our approach helps to understand why institutions fail or succeed in maintaining ESSs.

ACS Style

Thomas Falk; Joachim H. Spangenberg; Marianna Siegmund-Schultze; Susanne Kobbe; Til Feike; Daniel Kuebler; Josef Settele; Tobias Vorlaufer. Identifying governance challenges in ecosystem services management – Conceptual considerations and comparison of global forest cases. Ecosystem Services 2018, 32, 193 -203.

AMA Style

Thomas Falk, Joachim H. Spangenberg, Marianna Siegmund-Schultze, Susanne Kobbe, Til Feike, Daniel Kuebler, Josef Settele, Tobias Vorlaufer. Identifying governance challenges in ecosystem services management – Conceptual considerations and comparison of global forest cases. Ecosystem Services. 2018; 32 ():193-203.

Chicago/Turabian Style

Thomas Falk; Joachim H. Spangenberg; Marianna Siegmund-Schultze; Susanne Kobbe; Til Feike; Daniel Kuebler; Josef Settele; Tobias Vorlaufer. 2018. "Identifying governance challenges in ecosystem services management – Conceptual considerations and comparison of global forest cases." Ecosystem Services 32, no. : 193-203.

Original article
Published: 06 July 2018 in Regional Environmental Change
Reads 0
Downloads 0

In Brazil’s semi-arid Northeast, most rural dwellers derive income from the dry Caatinga forest through livestock farming, fruit collection, and firewood extraction. However, recurring droughts and inadequate land use practices jeopardize farmers’ livelihoods. The drought-resistant, endemic Umbuzeiro tree provides fruit for direct consumption and allows for the creation of transformed products. The planting of this native species can enhance the well-being of the ecosystem and establish future benefits for smallholdings. However, it is crucial that when taking up innovative practices to cope with environmental change, a willingness to apply them should be fostered among local farmers. We used constellation analysis as a transdisciplinary approach to identify elements of current land management which subsequently defined the nodes of a Bayesian network (BN). We developed probabilities of practice uptake that strengthen success, namely the conservation of natural resources while securing the incomes of smallholders. In collaboration with stakeholders and experts, 25 identified nodes for the BN were tested under various scenarios. Adopting all suggested innovative practices secures the final objectives—ecosystem health and farmer benefits (approx. 90%). The analysis quantified the relevance of single issues that may impede farmers to adopt the practices, such as having to cultivate seedlings or avoiding long-term investments. Further crucial actions include the fencing-off of livestock and marketing pathways. Affordable credit, research, and supportive farmers’ institutions can encourage farmers to implement innovative practices. The use of modeled scenarios can provide evidence, which might encourage sustainable land management.

ACS Style

Verena Rodorff; Liron Steinmetz; Jan Mertens; Marianna Siegmund-Schultze; Johann Köppel. Applying Bayesian networks to evaluate small-scale farmers’ perceptions of native reforestation practices in Brazil’s Caatinga biome. Regional Environmental Change 2018, 18, 1983 -1997.

AMA Style

Verena Rodorff, Liron Steinmetz, Jan Mertens, Marianna Siegmund-Schultze, Johann Köppel. Applying Bayesian networks to evaluate small-scale farmers’ perceptions of native reforestation practices in Brazil’s Caatinga biome. Regional Environmental Change. 2018; 18 (7):1983-1997.

Chicago/Turabian Style

Verena Rodorff; Liron Steinmetz; Jan Mertens; Marianna Siegmund-Schultze; Johann Köppel. 2018. "Applying Bayesian networks to evaluate small-scale farmers’ perceptions of native reforestation practices in Brazil’s Caatinga biome." Regional Environmental Change 18, no. 7: 1983-1997.

Original article
Published: 10 March 2018 in Regional Environmental Change
Reads 0
Downloads 0

Currently, artisanal fisheries in fresh water reservoirs have been losing ground to commercial fish farming and a great deal of fishery resources are being threatened by human interventions, such as reservoir management and increasing net-cage aquaculture. This study aims to understand the impacts of environmental changes on fishery resources and analyse the migratory fish breeding season as a missing link for fishery management in the semi-arid area of the São Francisco River Basin. Among the 870 fishermen operating in the Pernambuco part of the Itaparica Reservoir, 10% were interviewed and affirmed that fish stocks have been compromised due to the closed fishing period’s incoherence, exotic species insertion, and changes to the river flow caused by reservoir construction and operation. A significant correlation was observed between the Reproductive Activity Index (RAI) and precipitation (p = 0.745) as well as between the RAI and the river’s flow (p = −0.909). This shows how important it is to consider both the semi-arid climate setting and reservoir operation in determining the closed period which should safeguard fish reproduction. Monitoring the fish reproduction period and research on the reproductive biology of native fish species is needed in the São Francisco River Basin’s different stretches in order to guarantee valuable fish stocks and fisheries maintenance. Integrated action between the fish resource users, civil society, and federal bodies/agencies is essential in order to mitigate impacts and improve fish production systems, not only in Brazil, but in other regions experiencing a similar scenario.

ACS Style

Gérsica Moraes Nogueira Da Silva; Renata Maria C. M. De Oliveira Carvalho; Ana Carla Asfora El-Deir; Maria Do Carmo Martins Sobral; Marianna Siegmund-Schultze. Artisanal fisheries of the Itaparica reservoir, São Francisco River, Brazil: socioeconomic profile, environmental dynamics, and management recommendations. Regional Environmental Change 2018, 18, 1889 -1899.

AMA Style

Gérsica Moraes Nogueira Da Silva, Renata Maria C. M. De Oliveira Carvalho, Ana Carla Asfora El-Deir, Maria Do Carmo Martins Sobral, Marianna Siegmund-Schultze. Artisanal fisheries of the Itaparica reservoir, São Francisco River, Brazil: socioeconomic profile, environmental dynamics, and management recommendations. Regional Environmental Change. 2018; 18 (7):1889-1899.

Chicago/Turabian Style

Gérsica Moraes Nogueira Da Silva; Renata Maria C. M. De Oliveira Carvalho; Ana Carla Asfora El-Deir; Maria Do Carmo Martins Sobral; Marianna Siegmund-Schultze. 2018. "Artisanal fisheries of the Itaparica reservoir, São Francisco River, Brazil: socioeconomic profile, environmental dynamics, and management recommendations." Regional Environmental Change 18, no. 7: 1889-1899.

Original article
Published: 01 March 2018 in Regional Environmental Change
Reads 0
Downloads 0

For decades, large reservoirs have been built for hydropower plants in Brazil’s São Francisco River Basin. Rural development has been a simultaneous goal with a primary focus on irrigation. Irrigated agriculture, however, has suffered from poor soils, insufficient water management strategies, and a disregard for integrating grazing-based smallholdings outside of the irrigation schemes. Recurrent droughts are distressing all sectors. This synthesis assessed sustainable land management options by investigating the aquatic and terrestrial land use systems alongside their underlying ecosystem functions and services. Decisions about the allocation of scarce water proved to be both the major issue of land use discourses and driver of practices. The primarily hydroelectricity-focused water management practice cannot be maintained at the same level in the long run, as it has become ever more adverse towards competing water usages. The increasing use of the water and adjacent land also constitutes a major potential threat to water quality. Managed water level fluctuations should generally mimic natural patterns. Wind and solar power generation are suitable complements to agricultural land use. Cycling scarce nutrients between aquatic and terrestrial sectors is ambitious but promising, ultimately improving the generally poor soils in the area. Smart management of biodiversity can foster intensively-irrigated cropping, although the non-irrigated Caatinga ecosystem needs better management of its conflicting uses. Aims and responsibilities of multi-level planning and management require clarification and coordination between sectors, while practices of public participation should be revised in order to better support a comprehensive and transparent transition towards sustainability.

ACS Style

Marianna Siegmund-Schultze; Johann Köppel; Maria Do Carmo Sobral. Unraveling the water and land nexus through inter- and transdisciplinary research: sustainable land management in a semi-arid watershed in Brazil’s Northeast. Regional Environmental Change 2018, 18, 2005 -2017.

AMA Style

Marianna Siegmund-Schultze, Johann Köppel, Maria Do Carmo Sobral. Unraveling the water and land nexus through inter- and transdisciplinary research: sustainable land management in a semi-arid watershed in Brazil’s Northeast. Regional Environmental Change. 2018; 18 (7):2005-2017.

Chicago/Turabian Style

Marianna Siegmund-Schultze; Johann Köppel; Maria Do Carmo Sobral. 2018. "Unraveling the water and land nexus through inter- and transdisciplinary research: sustainable land management in a semi-arid watershed in Brazil’s Northeast." Regional Environmental Change 18, no. 7: 2005-2017.

Journal article
Published: 23 November 2017 in Ambiente e Agua - An Interdisciplinary Journal of Applied Science
Reads 0
Downloads 0

A atual governança Hídrica no Brasil contribui para o aumento dos problemas oriundos da escassez hídrica na bacia do São Francisco, majorando os conflitos pelo uso da água. Este artigo tem o objetivo de avaliar alguns desafios e oportunidades da governança hídrica na bacia do São Francisco com base numa robusta coleta e análise de dados nos mais diversos órgãos e instituições em escalas nacional, estadual e de bacia. A metodologia inclui a análise da interação interinstitucional através do exame da coordenação dos planos de recursos hídricos, a análise da implementação dos comitês de bacias dos rios afluentes e a quantidade e qualidade acessível de dados relativos à gestão de águas. A maioria dos planos dos rios afluentes vigentes foi elaborada pelo poder público e consequentemente, boa parte dos planos analisados apresentam propostas com divergências regionais em suas diferentes escalas de planejamento e apresentam falhas na sinergia entre as ações dos diversos planos. Além disso, a região semiárida padece com a baixa implantação dos comitês de bacias de rios afluentes e a bacia como um todo sofre com a falta de um mecanismo apropriado de produção, atualização e compartilhamento de informações relevantes para a gestão hídrica. Portanto, faz-se necessário aprimorar o mecanismo de articulação entre os planos com o uso de ferramentas de avaliação integrada e de contexto decisório, fortalecer a participação pública através de comitês de rios afluentes e a adoção de uma plataforma de dados colaborativa donde se possa compartilhar informações geradas em diferentes setores da sociedade.

ACS Style

Clécio Barbosa Souza Júnior; Marianna Siegmund-Schultze; Johann Köppel; Maria Do Carmo Sobral. Sinais de um problema crônico: a governança hídrica carece promover os comitês de bacias, coordenar planos e gerir informações. Ambiente e Agua - An Interdisciplinary Journal of Applied Science 2017, 12, 1054 -1067.

AMA Style

Clécio Barbosa Souza Júnior, Marianna Siegmund-Schultze, Johann Köppel, Maria Do Carmo Sobral. Sinais de um problema crônico: a governança hídrica carece promover os comitês de bacias, coordenar planos e gerir informações. Ambiente e Agua - An Interdisciplinary Journal of Applied Science. 2017; 12 (6):1054-1067.

Chicago/Turabian Style

Clécio Barbosa Souza Júnior; Marianna Siegmund-Schultze; Johann Köppel; Maria Do Carmo Sobral. 2017. "Sinais de um problema crônico: a governança hídrica carece promover os comitês de bacias, coordenar planos e gerir informações." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 12, no. 6: 1054-1067.

Journal article
Published: 01 June 2017 in Ecosystem Services
Reads 0
Downloads 0
ACS Style

Christian Albert; Christoph Schröter-Schlaack; Bernd Hansjürgens; Alexandra Dehnhardt; Ralf Döring; Hubert Job; Johann Köppel; Sebastian Krätzig; Bettina Matzdorf; Michaela Reutter; Stefan Schaltegger; Mathias Scholz; Marianna Siegmund-Schultze; Hubert Wiggering; Manuel Woltering; Christina von Haaren. An economic perspective on land use decisions in agricultural landscapes: Insights from the TEEB Germany Study. Ecosystem Services 2017, 25, 69 -78.

AMA Style

Christian Albert, Christoph Schröter-Schlaack, Bernd Hansjürgens, Alexandra Dehnhardt, Ralf Döring, Hubert Job, Johann Köppel, Sebastian Krätzig, Bettina Matzdorf, Michaela Reutter, Stefan Schaltegger, Mathias Scholz, Marianna Siegmund-Schultze, Hubert Wiggering, Manuel Woltering, Christina von Haaren. An economic perspective on land use decisions in agricultural landscapes: Insights from the TEEB Germany Study. Ecosystem Services. 2017; 25 ():69-78.

Chicago/Turabian Style

Christian Albert; Christoph Schröter-Schlaack; Bernd Hansjürgens; Alexandra Dehnhardt; Ralf Döring; Hubert Job; Johann Köppel; Sebastian Krätzig; Bettina Matzdorf; Michaela Reutter; Stefan Schaltegger; Mathias Scholz; Marianna Siegmund-Schultze; Hubert Wiggering; Manuel Woltering; Christina von Haaren. 2017. "An economic perspective on land use decisions in agricultural landscapes: Insights from the TEEB Germany Study." Ecosystem Services 25, no. : 69-78.

Journal article
Published: 01 November 2015 in Land Use Policy
Reads 0
Downloads 0
ACS Style

Marianna Siegmund-Schultze; Verena Rodorff; Johann Köppel; Maria Do Carmo Sobral. Paternalism or participatory governance? Efforts and obstacles in implementing the Brazilian water policy in a large watershed. Land Use Policy 2015, 48, 120 -130.

AMA Style

Marianna Siegmund-Schultze, Verena Rodorff, Johann Köppel, Maria Do Carmo Sobral. Paternalism or participatory governance? Efforts and obstacles in implementing the Brazilian water policy in a large watershed. Land Use Policy. 2015; 48 ():120-130.

Chicago/Turabian Style

Marianna Siegmund-Schultze; Verena Rodorff; Johann Köppel; Maria Do Carmo Sobral. 2015. "Paternalism or participatory governance? Efforts and obstacles in implementing the Brazilian water policy in a large watershed." Land Use Policy 48, no. : 120-130.

Journal article
Published: 01 June 2015 in Revista Brasileira de Ciências Ambientais (Online)
Reads 0
Downloads 0
ACS Style

Marianna Siegmund-Schultze; Johann Köppel; Maria Do Carmo Sobral. Balancing ecosystem services and societal demands in a highly managed watershed: setup and progress of a comprehensive research project. Revista Brasileira de Ciências Ambientais (Online) 2015, 3 -18.

AMA Style

Marianna Siegmund-Schultze, Johann Köppel, Maria Do Carmo Sobral. Balancing ecosystem services and societal demands in a highly managed watershed: setup and progress of a comprehensive research project. Revista Brasileira de Ciências Ambientais (Online). 2015; (36):3-18.

Chicago/Turabian Style

Marianna Siegmund-Schultze; Johann Köppel; Maria Do Carmo Sobral. 2015. "Balancing ecosystem services and societal demands in a highly managed watershed: setup and progress of a comprehensive research project." Revista Brasileira de Ciências Ambientais (Online) , no. 36: 3-18.

Journal article
Published: 01 June 2015 in Revista Brasileira de Ciências Ambientais (Online)
Reads 0
Downloads 0
ACS Style

Maria Do Carmo Martins Sobral; Johann Köppel; Marianna Siegmund-Schultze. Editorial. Revista Brasileira de Ciências Ambientais (Online) 2015, 1 -2.

AMA Style

Maria Do Carmo Martins Sobral, Johann Köppel, Marianna Siegmund-Schultze. Editorial. Revista Brasileira de Ciências Ambientais (Online). 2015; (36):1-2.

Chicago/Turabian Style

Maria Do Carmo Martins Sobral; Johann Köppel; Marianna Siegmund-Schultze. 2015. "Editorial." Revista Brasileira de Ciências Ambientais (Online) , no. 36: 1-2.