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László Demeter

László Demeter
Centre for Ecological Research · Traditional Ecological Knowledge research group

About

25
Publications
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Introduction

Publications

Publications (25)
Article
Full-text available
Despite deforestation taking place globally, forest cover is increasing in many European landscapes. This increase, however, resulting from plantations and spontaneous forest regrowth, may obscure the generally declining trend of semi-natural forests, though the latter are essential for local and landscape-level conservation strategies and sustaina...
Book
Néhány ezer éve a Nyírség buckák és buckaközök által tagolt világában homoki tölgyesek, gyertyános-kocsányos tölgyesek, keményfás ligeterdők és láperdők alkottak kiterjedt erdőségeket, mély fekvésű mocsarakkal, lápokkal és rétekkel váltakozva. Azonban a bronzkor végi és vaskori, majd a honfoglalás korának legeltető állattartása az erdők pusztításáh...
Article
Full-text available
Background Traditional knowledge is key for sustainability, but it is rapidly disappearing. Pig keeping in forests and marshes is an ancient, once widespread, now vanishing practice, with a major economic and ecological potential. The knowledge of pig keepers and the foraging activity of pigs are hardly documented. Methods We studied the knowledge...
Article
Full-text available
The high nature conservation value of floodplain ecosystems is severely threatened by invasive alien species. Besides adversely affecting native biodiversity, these species also pose a major threat from a wider socio-ecological perspective (e.g. ‘roughness’ increases flood risk). Finding options to control dense shrub layers consisting of invasive...
Article
Full-text available
A tölgylisztharmat (Erisyphe spp.) a tölgyek (különösen a kocsányos tölgy) erdész szakma által jól ismert kórokozója. Az európai növénykórtan és erdészettudomány is hatalmas tudást halmozott már fel arról, hogy milyen károkat képes okozni csemetekertekben, tarvágás vagy fokozatos felújító vágást követõ felújításokban, pótlá- sokban vagy éppen fiata...
Article
Full-text available
Nyolcvankét éve fogalmazta meg Soó Rezső, a Debreceni Tudományegyetem professzora: „Az egész Nyírségben nincs több ilyen eredeti õsállapotban megmaradt állomány, mely a jégkorszak utáni beerdősülés minden fázisának botanikai emlékeit épségben megőrizte.” A Kárpát-medencei keményfás ligeterdő rezervátumok között ma az egyik legrégebb óta zavartalan...
Article
Full-text available
Introduced pathogen microorganisms are important drivers of ecosystem change. This paper highlights the impact of the non-native pathogen mildew multi-species complex on the natural regeneration dynamics of pedunculate oak (Quercus robur). Pedunculate oak is a European keystone tree species, hosting a great amount of biodiversity, but its future ro...
Article
Full-text available
A lowland-mountain floristic gradient from the Carpathian Basin-The characterization of grasslands between the Tisza River and the Bihor Peak, and their positioning in a zonation and vegetation history context: We conducted vegetation surveys from the Tisza River, through the Körös-Maros Interfluve to the Bihor Peak. We compiled species lists in 27...
Article
Full-text available
Hosszú út vezetett az erdőrezervátum-gondolat megfogalmazásáig és érvényre juttatásáig, amelyet a Magyar Királyság őserdeinek 19-20. századi kiaknázásáról és gazdasági erdővé alakításáról szóló lelkesült és figyelmeztető beszámolók, valamint az őserdő fogalom körüli értelmezési viták alapoztak meg. ... (Erdészeti LaOK)
Article
Full-text available
Background Forests have been grazed for millennia. Around the world, forest grazing by livestock became a controversial management practice, gradually restricted in many countries over the past 250 years. This was also the case in most Central and Eastern European countries, including Hungary, where forest grazing was a legally prohibited activity...
Article
Full-text available
Wetland grazing by livestock, once widespread throughout Europe, is increasingly used in conservation management. To avoid conflicts and enable cooperation between wetland users and conservationists, habitat quality indicators relevant to both stakeholder groups would be useful. We aimed to identify which indicators of grazed wetland habitat qualit...
Article
Full-text available
In the absence of primeval floodplain forests, near-natural remnants are key references for close-to-nature forestry and nature conservation. Old-growth forest characteristics (OGCs) were quantified in 16 managed (rotation or selection) and abandoned semi-natural floodplain forests by taking snapshot inventories of structural features. Principal co...
Article
Full-text available
A Biológiai Sokféleség és az Ökoszisztéma-szolgáltatások Globális Értékelő Tanulmánya, amelyet az ENSZ Biológiai Sokféleség és Ökoszisztéma-szolgáltatás Kormányközi Testülete (IPBES) jelentetett meg 2019 májusában, elismerte, hogy a természet védelme hatékonyabbá válhat a hagyományos, bennszülött és helyi tudás bevonásával, illetve ezen tudás birto...
Article
Full-text available
The Global Assessment on Biodiversity and Ecosystem Services released in May 2019 by the United Nations' Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) acknowledged that nature conservation could become more efficient with the inclusion of traditional, indigenous and local knowledge, and the participation o...
Article
Full-text available
Large herbivores have a keystone role in many forest ecosystems. There is widespread recognition that undesirable changes may be caused by the complete removal of grazing-related disturbances, whereas there can be benefits from properly managed, targeted livestock grazing, both from a forest management and biodiversity perspectives. However, there...
Article
Full-text available
Wetlands are fragile, dynamic systems, transient at larger temporal scales and strongly affected by long-term human activities. Sustaining at least some aspects of human management, particularly traditional grazing, would be especially important as a way of maintaining the “necessary” disturbances for many endangered species. Traditional ecological...
Conference Paper
There are diverse ways how Indigenous Peoples and Local Communities (IPLC) contribute to the co-production, maintenance and protection of biodiversity and thus foster the achievement of many of the Aichi Targets. IPLC often ‘contribute’ to nature by co-producing genetic diversity, species and ecosystem diversity through ‘accompanying’ natural proce...
Poster
Full-text available
From the Neolithic times, grazing by large domestic herbivores has had a significant impact on European forests, but the issue of the real impact of this disturbance continues to imply several questions. Diversification of disturbances, including the reintroduction of some “traditional”/ “historical” disturbances in collaboration with local knowled...
Article
Many habitats in Europe have been managed by grazing for thousands of years. However, extensive grazing systems are becoming increasingly rare in the region, and there is a lack of understanding of the functioning of these systems.

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Cited By

Projects

Projects (5)
Project
https://ecolres.hu/en/node/13169 Ecological studies rarely utilize the oral historical knowledge of local inhabitants to understand vegetation dynamics and driver-vegetation interactions. Our main objective is to assess the impact of interacting indirect (e.g., social and economic) and direct (e.g., land-use change, invasive species) drivers on vegetation change using local and traditional ecological knowledge as a data source of past vegetation status and trends. By conducting oral history interviews with the DPSIR (Driving forces–Pressures–States–Impacts–Responses) framework, we aim to analyse the complexity of driver-vegetation interactions at fine spatial and longer-term temporal scales. Our additional objective is to develop a new approach for fine-scale landscape historical analysis that is based on oral history interviewing using in-door and out-door interviews. Local case studies will provide a deeper insight on local vegetation dynamics, while the multilocal regional analysis will help find general patterns and grasp the diversity of local driver-vegetation change interactions. At local scale, we will focus on encroachment (esp. with oaks), a process that is regarded both as a threat by overgrowing species-rich grasslands and as an opportunity for the development of semi-natural oak forests. Multi-scale analysis of drivers of vegetation change in geographically distant areas with similar ecological features at the decades scale are rare. By expanding our research to two non-European study sites (Iran, Mongolia), involving foreign PhD students, we will identify globally acting drivers of local vegetation change, and broaden the spatial and temporal scales of our understanding.
Project
https://ecolres.hu/en/node/9229 Diversification and adequate maintenance of disturbances as well as reintroduction of some disappeared disturbances are important trends in conservation biology. However, some traditional land-use systems and especially the effects of some of their components on vegetation are not understood deeply enough by botanists and conservationists. We will study the effect of grazing on the vegetation of non-conventional pastures (marshes and forests). We will apply classical landscape historical, and botanical, and novel ethnoecological methods jointly. Data about grazing by cattle, sheep and pig is going to be collected. The overall goals of the project is a detailed documentation of grazing practices of marshes and forests from the mid-18th century, with a particular focus on the effects on vegetation; to document recent grazing practices of marshes and alluvial forests, their effects on vegetation, and its comparison with the past, and with ungrazed control sites. Based on our studies, specific conservation management experiments of marsh and forest grazing can be started. Our project prepares some ecological arguments for this, too.