Srdjan Keren

Srdjan Keren
University of Agriculture in Krakow | UR · Faculty of Forestry, Department of Forest Resources Management

About

27
Publications
10,507
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323
Citations
Additional affiliations
October 2010 - February 2016
University of Banja Luka
Position
  • Research Associate
Education
October 2010 - February 2015
University of Ljubljana
Field of study
  • Management of Forest Ecosystems

Publications

Publications (27)
Article
Full-text available
The mechanistic pathways connecting ocean-atmosphere variability and terrestrial productivity are well-established theoretically, but remain challenging to quantify empirically. Such quantification will greatly improve the assessment and prediction of changes in terrestrial carbon sequestration in response to dynamically induced climatic extremes....
Article
Full-text available
Primary forests, defined here as forests where the signs of human impacts, if any, are strongly blurred due to decades without forest management, are scarce in Europe and continue to disappear. Despite these losses, we know little about where these forests occur. Here, we present a comprehensive geodatabase and map of Europe’s known primary forests...
Article
Full-text available
For non-native tree species with an origin outside of Europe a detailed compilation of enemy species including the severity of their attack is lacking up to now. We collected information on native and non-native species attacking non-native trees, i.e. type, extent and time of first observation of damage for 23 important non-native trees in 27 Euro...
Article
Full-text available
In this study, we analysed patterns of spatial variation in the basal area of live and dead trees and structural complexity in close-to-primeval forests in the Dinaric Mts. The results were compared with an analogous study conducted in the Western Carpathians. The research was carried out in the Janj, Lom and Perucića forest reserves (Bosnia and He...
Article
Full-text available
Europe has a history rich in examples of successful and problematic introductions of trees with a native origin outside of Europe (non-native trees, NNT). Many international legal frameworks such as treaties and conventions and also the European Union have responded to the global concern about potential negative impacts of NNT that may become invas...
Article
Full-text available
The distribution of tree species has traditionally been analyzed based on tree diameter (DBH) as a continuous variable. However, this approach does not usually provide information on how species are distributed across the area of interest. In this study, an inverse approach was applied to investigate tree distribution patterns in two Dinaric old-gr...
Article
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Structural indices are often proposed as guiding measures for increasing structural heterogeneity. However, few studies have examined the association between such indices and conventional stand attributes. The primary objectives of this study were to evaluate changes in structural heterogeneity and tree species diversity at different plot sizes and...
Article
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The recent research has indicated that restoration of old-growth attributes such as large-sized living trees and snags contributes to sustaining biodiversity on the landscape level. The extent to which these attributes are restored, maintained, or diminished by total salvage logging, selection silviculture, and strict protection has been partly inv...
Article
Tree-related microhabitats (TreMs) are important features for the conservation of biodiversity in forest ecosystems. Although other structural indicators of forest biodiversity have been extensively studied in recent decades, TreMs have often been overlooked, either due to the absence of a consensual definition or a lack of knowledge. Despite the i...
Article
Full-text available
Silvicultural practices are generally developed to meet societal objectives given the constraints of the site. This simple premise is a foundation of modern silviculture. However, silviculture may vary for other reasons related to cultural factors. This paper reviews the differences in silviculture in the twelve countries that comprise southeastern...
Article
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Old-growth forests are spontaneously developed forest ecosystems without direct human influence in which only natural processes take place. In this study we analyzed the structural sustainability of beech-fir-spruce old-growth forests on dolomite and limestone in the Bosnian Dinaric Mountains. The field work was carried out on permanent experimenta...
Article
Full-text available
The knowledge about the impact of selection silviculture on deadwood components is fairly scarce. This study compared two Dinaric old-growth forests (OGFs) with adjacent managed forests (MFs) in which the single-tree selection system has been applied for a century. The comparisons were made in terms of the current amounts of coarse woody debris (CW...
Article
Quantitative descriptions of natural disturbance regimes are lacking for temperate forest regions in Europe, primarily because a long history of intensive land-use has been the overriding driver of forest structure and composition across the region. The following contribution is the first attempt to comprehensively describe the natural disturbance...
Article
Full-text available
The object of this study were three coppice beech stands located in the forest management area "Donjevrbasko” close to Banja Luka in the Republic of Srpska, north-western part of Bosnia and Herzegovina. These coppice stands grow in different conditions. According to available eco-vegetation maps, first beech coppice stand develops in favorable site...
Article
Full-text available
The structure and the spatio-temporal dynamics of the mixed beech-silver fir-Norway spruce old-growth forest of Biogradska Gora (Montenegro) have been analysed at different spatial scales: at the landscape scale, using a high resolution SPOT5 satellite image and at the stand level with an intensive field survey. This remote sensing approach has bee...
Article
Full-text available
Regression of conifers in European mixed old-growth mountain forests has been observed for a long period and studied from different aspects. Old-growth (OG) forests in Bosnia and Herzegovina (BiH) have not experienced heavy air pollution and chronic overbrowsing that have affected many other European OG forests, while climatic and anthropogenic dis...
Article
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Abstract: The paper analyzes the characteristics of the soil under spruce plantations in the west part of the Republic of Srpska. Artifi cially established spruce stands (Picea abies, Karst.) are presented in different parts of the Republic of Srpska. There are several reasons for their establishment, and one of them is high productivity and econom...
Article
Full-text available
Background and Purpose: Regarding official management prescriptions managed fir-spruce forest stands, among others, in Bosnia are supposed to have all-aged structure. We compared the differences between actual and targeted structure in three fir-spruce stands in central Bosnia with special attention given to volume distribution throughout diameter...
Conference Paper
Full-text available
This article presents results of the research relating to the influence of light regime on seedling regeneration in the mixed silver fir - Norway spruce forest at Dnolucka planina, Bosnia and Herzegovina. For the purpose of assessing the influence of heterogeneous light environments on density and ADR (apical dominance ratio) of fir and spruce seed...
Conference Paper
Full-text available
The study was carried out in the area of Bukovi in the mountain beech coppice forest and forest cultures of Douglas fir, Norway spruce and Austrian pine in management unit Bukovi, compartments 21, 33 and 34 that belong to Forest Company Department Kosjerić, Serbia. This paper shows the research results which refer to the development of dominant tre...

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Projects

Projects (3)
Project
The aim of the project is to develop models describing the probability of drought-induced tree mortality. The research will include forest-forming species: Scots pine, Norway spruce, oak (pedunculate and sessile), beech, fir, alder and silver birch. The research will result in models and detailed maps of tree mortality probability. The probability of mortality will be determined for all stands of the analysed species located in the area of the State Forests in Poland. Conducted analyses will allow to indicate site conditions and stand characteristics that increase susceptibility to drought-induced mortality.
Project
Innovative forest MAnagEment STrategies for a Resilient biOeconomy under climate change and disturbances (I-MAESTRO) Project Innovative forest MAnagEment STrategies for a Resilient biOeconomy under climate change and disturbances (I-MAESTRO) is supported under the umbrella of ForestValue ERA-NET Cofund by the National Science Centre, Poland and French Ministry of Agriculture, Agrifood, and Forestry; French Ministry of Higher Education, Research and Innovation, German Federal Ministry of Food and Agriculture (BMEL) via Agency for Renewable Resources (FNR), Slovenian Ministry of Education, Science and Sport (MIZS). ForestValue has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement N° 773324. The main aim of our project is to improve the scientific basis for developing management strategies that increase the resilience of the bioeconomy to future natural disturbances and climate change, while also maintaining a high level of wood production, carbon storage, and habitat quality for biodiversity. To reach this aim, the project will deliver on the following objectives: - review knowledge on forest disturbances and forest resilience to synthesize and improve evidence on resistance to disturbances and recovery processes; - develop an updated disturbance database (Schelhaas et al. 2003) to produce forest disturbance scenarios over Europe; - simulate the impacts of disturbances, management and climate change scenarios on wood production, carbon storage, and biodiversity conservation (resilience, provisioning) at different scales (stand, landscape and the European regional level); - improve biodiversity assessment in forest dynamics models by defining biodiversity linker functions at the landscape scale that integrate disturbance effects; - assess the influence of structural complexity on ecosystem services and the value of complexity-based management strategies.
Archived project
2014-2017. Grant BZ/KBiPL/14-47. Actual and potential site productivity for main forest forming tree species in Poland. Project carried out by Consortium: University of Agriculture in Krakow, Forest Management Bureau, Forest Research Institute.