Increasing Forest Ecosystem Resilience Is a Matter of Ecosystem Legacy Management: Conceptual Model for Restoration in Hemiboreal Forests
Abstract
1. Introduction
2. Materials and Methods
3. Results
- (1)
- the composition and dynamics of ecosystem legacies,
- (2)
- the environmental filters and trajectories shaping them (legacy retention), and
- (3)
- the management levers (disturbance management) that can restore or enhance these legacies to support resilience. The definitions of key terms used throughout this paper are shown in Table 1.
3.1. Ecosystem Legacies
3.2. Legacy Retention
3.3. Disturbance Management
3.4. The Integrated Legacy Concept for Hemiboreal Forested Landscapes
- Intact legacy stands. Natural or restored stands with legacies similar to stands under the natural disturbance regime, with respect to the variety of tree ages, species, and microhabitats that support smaller plants, fungi, insects, and mammals [18,20,45]. These would occur systematically across the landscape to provide the full information legacy to surrounding stands [13].Some variants of intact legacy stands could include:
- Cultural stands managed according to Indigenous practices that exist(ed) in a given ecoregion. These stands were historically managed to amplify the presence of certain stand types that supported useful native species, spiritual values, and that locally lowered the intensity of wildfires; but they also added to the functional and biological diversity of the landscape [72].
- Stands on cool or warm refugial sites in the landscape, holding the legacies of boreal and temperate species that can contract or expand with a changing climate.
- Stands that comprise the legacy of the landscape include:
- Even-aged stands managed to have as much tree species diversity and microhabitat structure as possible; these stands and the following stand type will also benefit over time from the proximity to intact legacy stands.
- Uneven-aged stands managed by single tree or small group selection with attention to leaving microhabitat features intact.
- Afforestation or restoration of severely degraded stands [85]:
- Focus on creating multispecies stands, with a variety of mixtures
- Restore natural disturbance regimes (e.g., fire, inundation, gap creation)
4. Discussion
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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| Term | Definition |
|---|---|
| Ecosystem legacy | A physical, biological, or biogeochemical condition (or combination of conditions) of a pre-disturbance ecosystem element that persists long-term after a disturbance and influences post-disturbance ecosystem structure, composition, and functioning. Ecosystem legacies encompass both material legacies (biotic and abiotic remnants) and information legacies (life-history traits, functional strategies, and biogeochemical signals) |
| Ecological legacy | Used synonymously with biological legacy in this manuscript; refers specifically to organic remnants of a pre-disturbance ecosystem state that condition ecosystem recovery. |
| Biological legacy | The above- and below-ground organic remnants of a pre-disturbance ecosystem, including living organisms, dead organic matter, seed banks, and spatial patterns of these elements, which positively influence post-disturbance recovery processes. Examples include surviving trees, coarse woody debris, and soil seed banks. |
| Legacy traits | Life-history, physiological, or functional characteristics of organisms that persist through disturbance events and act as information legacies, shaping post-disturbance regeneration pathways and ecosystem dynamics |
| Legacy filtering | The process by which natural or anthropogenic disturbances, acting as environmental filters, constrain which ecosystem legacies persist and how they influence subsequent ecosystem trajectories. Legacy filtering integrates disturbance intensity, exposure opportunity, and management context, thereby shaping recovery options and ecosystem resilience. |
| Ecosystem resilience | The capacity of an ecosystem to resist disturbance and recover its structure, composition, and functions, mediated by the continuity, interaction, and integrity of ecosystem legacies rather than by recovery speed alone. |
| Legacy restoration | Management actions aimed at maintaining, enhancing, or reintroducing ecosystem legacies—both material and information legacies—to restore ecosystem processes, support biodiversity, and increase resilience under altered disturbance regimes or climate change. |
| Decade | Total Fires | Total Area (ha) | Mean Area/Fire (ha) | r (Fires vs. Total Area) | r (Fires vs. Mean Area) |
|---|---|---|---|---|---|
| 1990s | 2058 | 6211.3 | 3.02 | 0.69 | 0.17 |
| 2000s | 1302 | 8226.1 | 6.32 | 0.80 | 0.23 |
| 2010s | 746 | 830.0 | 1.11 | 0.83 | –0.18 |
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Jõgiste, K.; Frelich, L.E.; Vodde, F.; Jansons, Ā.; Bāders, E.; Reich, P.B.; Stanturf, J.A.; Rebane, S.; Köster, K.; Metslaid, M. Increasing Forest Ecosystem Resilience Is a Matter of Ecosystem Legacy Management: Conceptual Model for Restoration in Hemiboreal Forests. Forests 2026, 17, 197. https://doi.org/10.3390/f17020197
Jõgiste K, Frelich LE, Vodde F, Jansons Ā, Bāders E, Reich PB, Stanturf JA, Rebane S, Köster K, Metslaid M. Increasing Forest Ecosystem Resilience Is a Matter of Ecosystem Legacy Management: Conceptual Model for Restoration in Hemiboreal Forests. Forests. 2026; 17(2):197. https://doi.org/10.3390/f17020197
Chicago/Turabian StyleJõgiste, Kalev, Lee E. Frelich, Floortje Vodde, Āris Jansons, Endijs Bāders, Peter B. Reich, John A. Stanturf, Sille Rebane, Kajar Köster, and Marek Metslaid. 2026. "Increasing Forest Ecosystem Resilience Is a Matter of Ecosystem Legacy Management: Conceptual Model for Restoration in Hemiboreal Forests" Forests 17, no. 2: 197. https://doi.org/10.3390/f17020197
APA StyleJõgiste, K., Frelich, L. E., Vodde, F., Jansons, Ā., Bāders, E., Reich, P. B., Stanturf, J. A., Rebane, S., Köster, K., & Metslaid, M. (2026). Increasing Forest Ecosystem Resilience Is a Matter of Ecosystem Legacy Management: Conceptual Model for Restoration in Hemiboreal Forests. Forests, 17(2), 197. https://doi.org/10.3390/f17020197

