ORCID Profile
0000-0002-7015-6532
Current Organisations
University of Helsinki
,
Stellenbosch University
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Publisher: Wiley
Date: 20-03-2019
DOI: 10.1111/CONL.12644
Publisher: Public Library of Science (PLoS)
Date: 06-06-2014
Publisher: Informa UK Limited
Date: 29-01-2023
Publisher: Wiley
Date: 22-05-2020
DOI: 10.1111/CSP2.214
Publisher: Elsevier BV
Date: 12-2017
Publisher: Elsevier BV
Date: 05-2016
Publisher: Oxford University Press (OUP)
Date: 22-02-2016
Publisher: Wiley
Date: 28-11-2019
Publisher: Wiley
Date: 08-02-2017
DOI: 10.1111/COBI.12864
Abstract: In managed natural resource systems, such as fisheries and rangelands, there is a recognized trade-off between managing for short-term benefits and managing for longer term resilience. Management actions that stabilize ecological attributes or processes can improve productivity in the supply of ecosystem goods and services in the short term but erode system resilience at longer time scales. For ex le, fire suppression in rangelands can increase grass biomass initially but ultimately result in an undesirable, shrub-dominated system. Analyses of this phenomenon have focused largely on how management actions influence slow-changing biophysical system attributes (such as vegetation composition). Data on the frequency of management actions that reduce natural ecological variation on 66 private land-conservation areas (PLCAs) in South Africa were used to investigate how management actions are influenced by manager decision-making approaches, a largely ignored part of the problem. The pathology of natural resource management was evident on some PLCAs: increased focus on revenue-generation in decision making resulted in an increased frequency of actions to stabilize short-term variation in large mammal populations, which led to increased revenues from ecotourism or hunting. On many PLCAs, these management actions corresponded with a reduced focus on ecological monitoring and an increase in overstocking of game (i.e., ungulate species) and stocking of extralimitals (i.e., game species outside their historical range). Positives in natural resource management also existed. Some managers monitored slower changing ecological attributes, which resulted in less-intensive management, fewer extralimital species, and lower stocking rates. Our unique, empirical investigation of monitoring-management relationships illustrates that management decisions informed by revenue monitoring versus ecological monitoring can have opposing consequences for natural resource productivity and sustainability. Promoting management actions that maintain resilience in natural resource systems therefore requires cognizance of why managers act the way they do and how these actions can gradually shift managers toward unsustainable strategies.
Publisher: Wiley
Date: 09-01-2023
DOI: 10.1002/FEE.2593
Abstract: A new path for rhinoceros (rhino) conservation is needed. Recent data signal the alarming impact of poaching on populations in Africa's rhino stronghold, the state‐run Kruger National Park (South Africa), which today supports one quarter the rhinos than a decade ago. We aggregated African rhino population data, highlighting the growing role of private and community rhino custodians, who likely now conserve % of Africa's rhinos. Their contribution has been enabled by a supportive policy and economic environment, but this arrangement is becoming more difficult to sustain as costs associated with protecting rhinos skyrocket and revenue‐generating options become insufficient. Some privately held rhino populations are small or intensively managed, raising questions about their conservation value. As the role of private and community custodianship becomes increasingly central to the protection of Africa's remaining rhinos, its resilience must be strengthened through implementation of adaptive policies that incentivize rhino conservation. We outline policy pathways to provide an enabling environment for rhino conservation beyond state parks.
Publisher: Elsevier BV
Date: 06-2020
Publisher: Public Library of Science (PLoS)
Date: 12-02-2014
Publisher: Wiley
Date: 23-04-2018
DOI: 10.1111/DDI.12759
Publisher: Academy of Science of South Africa
Date: 29-09-2020
Abstract: Original article: 0.17159/sajs.2020/7598 The ORCID identifier [000-0001-7311-3223] given for one of the authors, Stefanie Freitag (South African National Parks, South Africa), is incorrect. This ORCID identifier is assigned to a different in idual also named Stefanie Freitag. The person to whom this ORCID ID corresponds, should not be attributed as a co-author of this article. The author Stefanie Freitag does not have an ORCID identifier.
Publisher: Wiley
Date: 15-06-2020
DOI: 10.1111/CONL.12741
Publisher: Elsevier
Date: 2018
Publisher: Springer Science and Business Media LLC
Date: 24-10-2022
Publisher: Elsevier BV
Date: 2021
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier BV
Date: 08-2021
Publisher: Elsevier BV
Date: 11-2020
Publisher: MDPI AG
Date: 13-08-2018
DOI: 10.3390/LAND7030096
Abstract: There is a growing recognition of the contribution that privately-owned land makes to conservation efforts, and governments are increasingly counting privately protected areas (PPAs) towards their international conservation commitments. The public availability of spatial data on countries’ conservation estates is important for broad-scale conservation planning and monitoring and for evaluating progress towards targets. Yet there has been limited consideration of how PPA data is reported to national and international protected area databases, particularly whether such reporting is transparent and fair (i.e., equitable) to the landholders involved. Here we consider PPA reporting procedures from three countries with high numbers of PPAs—Australia, South Africa, and the United States—illustrating the ersity within and between countries regarding what data is reported and the transparency with which it is reported. Noting a potential tension between landholder preferences for privacy and security of their property information and the benefit of sharing this information for broader conservation efforts, we identify the need to consider equity in PPA reporting processes. Unpacking potential considerations and tensions into distributional, procedural, and recognitional dimensions of equity, we propose a series of broad principles to foster transparent and fair reporting. Our approach for navigating the complexity and context-dependency of equity considerations will help strengthen PPA reporting and facilitate the transparent integration of PPAs into broader conservation efforts.
Publisher: Wiley
Date: 11-12-2018
DOI: 10.1111/COBI.12999
Abstract: The ability of private conservation organizations to remain financially viable is a key factor influencing their effectiveness. One-third of financially motivated private-land conservation areas (PLCAs) surveyed in South Africa are unprofitable, raising questions about landowners' abilities to effectively adapt their business models to the socioeconomic environment. In any complex system, options for later adaptation can be constrained by starting conditions (path dependence). We tested 3 hypothesized drivers of path dependence in PLCA ecotourism and hunting business models: (H1) the initial size of a PLCA limits the number of mammalian game and thereby predators that can be sustained (H2) initial investments in infrastructure limit the ability to introduce predators and (H3) rainfall limits game and predator abundance. We further assessed how managing for financial stability (optimized game stocking) or ecological sustainability (allowing game to fluctuate with environmental conditions) influenced the ability to overcome path dependence. A mechanistic PLCA model based on simple ecological and financial rules was run for different initial conditions and management strategies, simulating landowner options for adapting their business model annually. Despite attempts by simulated landowners to increase profits, adopted business models after 13 years were differentiated by initial land and infrastructural assets, supporting H1 and H2. A conservation organization's initial assets can cause it to become locked into a financially vulnerable business model. In our 50-year simulation, path dependence was overcome by fewer of the landowners who facilitated natural ecological variability than those who maintained constant hunting rates and predator numbers, but the latter experienced unsustainably high game densities in low rainfall years. Management for natural variability supported long-term ecological sustainability but not shorter term socioeconomic sustainability for PLCAs. Our findings highlight trade-offs between ecological and economic sustainability and suggest a role for governmental support of the private conservation industry.
Publisher: Academy of Science of South Africa
Date: 26-03-2020
Publisher: Resilience Alliance, Inc.
Date: 2016
Publisher: Resilience Alliance, Inc.
Date: 2016
Publisher: Springer Science and Business Media LLC
Date: 06-10-2023
Publisher: Informa UK Limited
Date: 14-08-2022
Publisher: Elsevier BV
Date: 06-2020
Publisher: Public Library of Science (PLoS)
Date: 02-07-2014
Publisher: Elsevier BV
Date: 11-2022
Start Date: 2020
End Date: 2025
Funder: Koneen Säätiö
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