Johan Svensson

Dr. Johan Svensson

Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, Uppsala, Sweden
orcid

Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
16 September 2019 in AMBIO
Verified
Journal Article
Open access
PDF file
AFAdam Felton
Adam Felton
TLTherese Löfroth
Therese Löfroth
Per K. AngelstamPer K. Angelstam
Per K. Angelstam
LGLena Gustafsson
Lena Gustafsson
JHJoakim Hjältén
Joakim Hjältén
TRThomas Ranius
Thomas Ranius
The multi-scale approach to conserving forest biodiversity has been used in Sweden since the 1980s, a period defined by increased reserve area and conservation actions within production forests. However, two thousand forest-associated species remain on Sweden’s red-list, and Sweden’s 2020 goals for sustainable forests are not being met. We argue that ongoing changes in the production forest matrix require more consideration, and that multi-scale conservation must be adapted to, and integrated with, production forest development. To make this case, we summarize trends in habitat provision by Sweden’s protected and production forests, and the variety of ways silviculture can affect biodiversity. We discuss how different forestry trajectories affect the type and extent of conservation approaches needed to secure biodiversity, and suggest leverage points for aiding the adoption of diversified silviculture. Sweden’s long-term experience with multi-scale conservation and intensive forestry provides insights for other countries trying to conserve species within production landscapes.

15 September 2020 in Diversity and Distributions
Verified
Journal Article
Open access
PDF file
FSFrancesco M. Sabatini
Francesco M. Sabatini
WKWilliam S. Keeton
William S. Keeton
MLMarcus Lindner
Marcus Lindner
MSMiroslav Svoboda
Miroslav Svoboda
PVPieter Verkerk
Pieter Verkerk
TKTobias Kuemmerle
Tobias Kuemmerle
Aims: Primary forests are critical for forest biodiversity and provide key ecosystem services. In Europe, these forests are particularly scarce and it is unclear whether they are sufficiently protected. Here we aim to: (a) understand whether extant primary forests are representative of the range of naturally occurring forest types, (b) identify forest types which host enough primary forest under strict protection to meet conservation targets and (c) highlight areas where restoration is needed and feasible.Location: Europe.Methods: We combined a unique geodatabase of primary forests with maps of forest cover, potential natural vegetation, biogeographic regions and protected areas to quantify the proportion of extant primary forest across Europe's forest types and to identify gaps in protection. Using spatial predictions of primary forest locations to account for underreporting of primary forests, we then highlighted areas where restoration could complement protection.Results: We found a substantial bias in primary forest distribution across forest types. Of the 54 forest types we assessed, six had no primary forest at all, and in two‐thirds of forest types, less than 1% of forest was primary. Even if generally protected, only ten forest types had more than half of their primary forests strictly protected. Protecting all documented primary forests requires expanding the protected area networks by 1,132 km2 (19,194 km2 when including also predicted primary forests). Encouragingly, large areas of non‐primary forest existed inside protected areas for most types, thus presenting restoration opportunities.Main conclusion: Europe's primary forests are in a perilous state, as also acknowledged by EU's “Biodiversity Strategy for 2030.” Yet, there are considerable opportunities for ensuring better protection and restoring primary forest structure, composition and functioning, at least partially. We advocate integrated policy reforms that explicitly account for the irreplaceable nature of primary forests and ramp up protection and restoration efforts alike.

8 June 2018 in Conservation Biology
Verified
Journal Article
Closed access
PDF file
JSJohan Svensson
Johan Svensson
JAJon Andersson
Jon Andersson
PSPer Sandström
Per Sandström
GMGrzegorz Mikusiński
Grzegorz Mikusiński
BJBengt Gunnar Jonsson
Bengt Gunnar Jonsson

10 August 2020 in Landscape Ecology
Verified
Journal Article
Open access
PDF file
JSJohan Svensson
Johan Svensson
JBJakub W. Bubnicki
Jakub W. Bubnicki
BJBengt Gunnar Jonsson
Bengt Gunnar Jonsson
JAJon Andersson
Jon Andersson
GMGrzegorz Mikusinski
Grzegorz Mikusinski
Context: As forest harvesting remains high, there is a crucial need to assess the remaining large, contiguous and intact forests, regionally, nationally and globally. Objectives: Our objective was to analyze the spatial patterns and structural connectivity of intact and primary forests in northern Sweden with focus on the Scandinavian Mountain region; one of the few remaining large European intact forest landscapes. Methods: Over 22 million ha with 14.5 million ha boreal and subalpine forest and with data consisting of a 60-70 year retrospective sequence, we analyzed distribution, density and connectivity of forests that have not been clear cut, using moving window and landscape analyzes derived from Circuitscape. Results: We revealed a contiguous, connected and semi-connected intact forest landscape forming a distinct Green Belt south to north along the mountain range. Almost 60% of the forestland remains intact, including contiguous clusters 10,000 ha and larger. The connectivity is particularly high in protected areas with primary forests outside contributing substantially to overall connectivity. We found gaps in connectivity in the southern parts, and furthermore low or absent connectivity across the whole inland and coastal areas of northern Sweden. Conclusions: Given its ecological values, the Scandinavian Mountains Green Belt is a key entity supporting ecological legacies, boreal biodiversity and ecosystem services, resilience and adaptive capacity, which needs to be safeguarded for the future. On the very large areas outside the mountain region, forestlands are severely fragmented, connectivity values are lost, and forest landscape restoration is needed for conservation and functional green infrastructure.

26 February 2023
Verified
Book Chapter
Open access
PDF file
Miguel Montoro GironaMiguel Montoro Girona
Miguel Montoro Girona
TATuomas Aakala
Tuomas Aakala
NANúria Aquilué
Núria Aquilué
ABAnnie Claude Bélisle
Annie Claude Bélisle
ECEmeline Chaste
Emeline Chaste
SGSylvie Gauthier
Sylvie Gauthier
The increasing effects of climate and global change oblige ecosystem-based management to adapt forestry practices to deal with uncertainties. Here we provide an overview to identify the challenges facing the boreal forest under projected future change, including altered natural disturbance regimes, biodiversity loss, increased forest fragmentation, the rapid loss of old-growth forests, and the need to develop novel silvicultural approaches. We specifically address subjects previously lacking from the ecosystem-based management framework, e.g., Indigenous communities, social concerns, ecological restoration, and impacts on aquatic ecosystems. We conclude by providing recommendations for ensuring the successful long-term management of the boreal biome facing climate change.

7 July 2019 in Forests
Verified
Journal Article
Open access
PDF file
BJBengt Gunnar Jonsson
Bengt Gunnar Jonsson
JSJohan Svensson
Johan Svensson
GMGrzegorz Mikusinski
Grzegorz Mikusinski
Michael MantonMichael Manton
Michael Manton
Per K. AngelstamPer K. Angelstam
Per K. Angelstam
Research Highlights: The European Union’s last large intact forest landscapes along the Scandinavian Mountain range in Sweden offer unique opportunities for conservation of biodiversity, ecological integrity and resilience. However, these forests are at a crossroad between intensified wood production aimed at bio-economy, and rural development based on multi-functional forest landscapes for future-oriented forest value chains. Background and Objectives: We (1) estimate the area of near-natural forests potentially remaining for forest harvesting and wood production, or as green infrastructure for biodiversity conservation and human well-being in rural areas, (2) review how forest and conservation policies have so far succeeded to reduce the loss of mountain forests, and (3) discuss what economic, socio-cultural and ecological values that are at stake, as well as different governance and management solutions. Materials and Methods: First, we estimated the remaining amount of intact mountain forests using (1) the Swedish National Forest Inventory, (2) protected area statistics, (3) forest harvest permit applications and actually harvested forests, (4) remote sensing wall-to-wall data on forests not subject to clear-felling since the mid-1950s, (5) mapping of productive and non-productive forestland, and (6) estimates of mean annual final felling rate. Second, we review policy documents related to the emergence of land use regulation in north Sweden, including the mountain forest border, and illustrate this with an actual case that has had significant policy implementation importance. Results: There is a clear difference between the proportions of formally protected productive forestland above the mountain forest border (52.5%) and north Sweden in general (6.3%). A total of 300,000 ha of previously not clear-felled mountain forest outside protected areas remain, which can support novel value chains that are not achievable elsewhere. Conclusions: The mountain forests in Sweden provide unique conservation values in the European Union. Since the beginning of the 1990s, policy regulations have been successful in limiting forest harvesting. Currently, however, mountain forests are a battle ground regarding intensification of forest use, including logging of forests that have never been subject to clear-felling systems vs. nature conservation and wilderness as a base for rural development. The ability of mountain municipalities to encourage sustainable rural forest landscapes must be strengthened.