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Selection: with tag forest-resources [more than 800 articles] 

 

Evidence for declining forest resilience to wildfires under climate change

  
Ecology Letters (12 December 2017), https://doi.org/10.1111/ele.12889

Abstract

Forest resilience to climate change is a global concern given the potential effects of increased disturbance activity, warming temperatures and increased moisture stress on plants. We used a multi-regional dataset of 1485 sites across 52 wildfires from the US Rocky Mountains to ask if and how changing climate over the last several decades impacted post-fire tree regeneration, a key indicator of forest resilience. Results highlight significant decreases in tree regeneration in the 21st century. Annual moisture deficits were significantly greater from ...

 

Tamm Review - Shifting global fire regimes: lessons from reburns and research needs

  
Forest Ecology and Management, Vol. 396 (July 2017), pp. 217-233, https://doi.org/10.1016/j.foreco.2017.03.035

Abstract

[Highlights] [::] We reviewed published studies on reburns in fire-adapted ecosystems of the world. [::] Fire regimes often have shifted from frequent to infrequent fire return intervals. [::] Legacies of past burns constrain the spread and severity of future fires. [::] Periodic fire generally favors fire-adapted vegetation and limits closed forests. [::] Better understanding of reburns informs climate change adaptation methods. [Abstract] Across the globe, rising temperatures and altered precipitation patterns have caused persistent regional droughts, lengthened fire seasons, and increased the number of weather-driven extreme fire events. ...

 

Repeated wildfires alter forest recovery of mixed-conifer ecosystems

  
Ecological Applications, Vol. 26, No. 6. (September 2016), pp. 1842-1853, https://doi.org/10.1890/15-1521.1

Abstract

Most models project warmer and drier climates that will contribute to larger and more frequent wildfires. However, it remains unknown how repeated wildfires alter post-fire successional patterns and forest structure. Here, we test the hypothesis that the number of wildfires, as well as the order and severity of wildfire events interact to alter forest structure and vegetation recovery and implications for vegetation management. In 2014, we examined forest structure, composition, and tree regeneration in stands that burned 1–18 yr before a ...

 

An assessment of forest biomass maps in Europe using harmonized national statistics and inventory plots

  
Forest Ecology and Management, Vol. 409 (February 2018), pp. 489-498, https://doi.org/10.1016/j.foreco.2017.11.047

Abstract

[Highlights] [::] We assessed four biomass maps for Europe using harmonized biomass reference data. [::] The harmonized statistics were derived from ∼430,000 plots from 26 countries. [::] All maps overestimated at low biomass and underestimated at high biomass. [::] All maps had an overall negative bias (23–43 Mg ha−1 at national level). [::] The maps relative errors was 29–40% at national level and 63–72% at cell level. [Abstract] Maps of aboveground forest biomass based on different input data and modelling approaches have been recently produced for Europe, opening up the ...

 

US natural resources and climate change: concepts and approaches for management adaptation

  
Environmental Management, Vol. 44, No. 6. (2009), pp. 1001-1021, https://doi.org/10.1007/s00267-009-9345-1

Abstract

Public lands and waters in the United States traditionally have been managed using frameworks and objectives that were established under an implicit assumption of stable climatic conditions. However, projected climatic changes render this assumption invalid. Here, we summarize general principles for management adaptations that have emerged from a major literature review. These general principles cover many topics including: (1) how to assess climate impacts to ecosystem processes that are key to management goals; (2) using management practices to support ecosystem resilience; ...

 

Stay or go - How topographic complexity influences alpine plant population and community responses to climate change

  
Perspectives in Plant Ecology, Evolution and Systematics (November 2017), https://doi.org/10.1016/j.ppees.2017.09.008

Abstract

In the face of climate change, populations have two survival options − they can remain in situ and tolerate the new climatic conditions (“stay”), or they can move to track their climatic niches (“go”). For sessile and small-stature organisms like alpine plants, staying requires broad climatic tolerances, realized niche shifts due to changing biotic interactions, acclimation through plasticity, or rapid genetic adaptation. Going, in contrast, requires good dispersal and colonization capacities. Neither the magnitude of climate change experienced locally nor the ...

 

Spreading like wildfire

  
Nature Climate Change, Vol. 7, No. 11. (November 2017), pp. 755-755, https://doi.org/10.1038/nclimate3432

Abstract

The 2017 wildfire season has seen unusually high fire levels in many parts of the world, with extensive and severe fires occurring in Chile, the Mediterranean, Russia, the US, Canada and even Greenland. Is this a sign of things to come? [Excerpt] During January and February, Chile experienced what their president Michelle Bachelet called “The greatest forest disaster in our history”. The nation was not adequately equipped to tackle these fires, leading the government to enact a state of emergency and accept ...

 

GlobalTreeSearch: the first complete global database of tree species and country distributions

  
Journal of Sustainable Forestry, Vol. 36, No. 5. (4 July 2017), pp. 454-489, https://doi.org/10.1080/10549811.2017.1310049

Abstract

This article presents, for the first time, an overview of all known tree species by scientific name and country level distribution, and describes an online database GlobalTreeSearch that provides access to this information. Based on our comprehensive analysis of published data sources and expert input, the number of tree species currently known to science is 60,065, representing 20% of all angiosperm and gymnosperm plant species. Nearly half of all tree species (45%) are found in just 10 families, with the 3 ...

 

Effects of phosphite in Pinus radiata - Fusarium circinatum interaction

  
(2016)

Abstract

The pitch canker, caused by the fungus Fusarium circinatum, is a disease under quarantine measures affecting Pinus spp. and Pseudotsuga menziesii worldwide. Characterized by the formation of large resinous cankers that girdle shoots, branches, and trunks, leads to the death of the host. To date, there are no means for the control of the pitch canker and, with the growing need to reduce the use of fungicides, another approaches must be studied. A method for the control of phytopathogenic diseases is ...

References


  1. Aguín, O., Mansilla, J. P., Sainz, M. J., 2006. In vitro selection of an effective fungicide against Armillaria mellea and control of white root rot of grapevine in the field. Pest Management Science 62(3), 223-228. https://doi.org/10.1002/ps.1149 .
  2. Ahmad, P., John, R., Sarwat, M., Umar, S., 2008. Responses of proline, lipid peroxidation and antioxidative enzymes in two varieties of Pisum sativum L. under salt stress. International Journal of Plant Production 2(4), 353-366.
 

The Spanish National Forest Inventory: history, development, challenges and perspectives

  
Pesquisa Florestal Brasileira, Vol. 37, No. 91. (29 September 2017), 361, https://doi.org/10.4336/2017.pfb.37.91.1337

Abstract

It is important to have a statistically robust forest information data base which can be updated and can provide long-term information. National Forest Inventories (NFI) provide one of the best large-scale sources of information, and therefore are a cornerstone of forest policies. The scopes of NFIs, which are the primary source of data for national and large-area assessments, has been broadened to include new variables to meet increasing information requirements. This paper describes the history, methodology and guidance of Spanish NFI and international requirements. The current objectives are ...

 

Bridging national and reference definitions for harmonizing forest statistics

  
Forest Science (June 2012), pp. 214-223, https://doi.org/10.5849/forsci.10-067

Abstract

Harmonization is the process of making information and estimates comparable across administrative borders. The degree to which harmonization succeeds depends on many factors, including the conciseness of the definitions, the availability and quality of data, and the methods used to convert an estimate according to a local definition to an estimate according to the reference definition. Harmonization requires the availability and use of common reference definitions and methods for converting from estimates based on national definitions to estimates based on reference ...

 

Comparison of methods used in European National Forest Inventories for the estimation of volume increment: towards harmonisation

  
Annals of Forest Science, Vol. 73, No. 4. (2016), pp. 807-821, https://doi.org/10.1007/s13595-016-0554-5

Abstract

[Key message] The increment estimation methods of European NFIs were explored by means of 12 essential NFI features. The results indicate various differences among NFIs within the commonly acknowledged methodological frame. The perspectives for harmonisation at the European level are promising. [Context] The estimation of increment is implemented differently in European National Forest Inventories (NFIs) due to different historical origins of NFIs and sampling designs and field assessments accommodated to country-specific conditions. The aspired harmonisation of increment estimation requires a comparison and an analysis ...

 

Early postfire vegetation recovery of Pinus brutia forests: effects offire severity, prefire stand age, and aspect

  
Turkish Journal of Agriculture and Forestry, Vol. 40 (2016), pp. 723-736, https://doi.org/10.3906/tar-1601-21

Abstract

Forests dominated by serotinous tree species are usually generalized to follow an autosuccessional model of postfire recovery. However, recent studies have suggested that prefire conditions, topography, and idiosyncrasies of the fire disturbance can have notable effects on how such forests respond to fire. We investigated the effects of fire severity, prefire stand age, and aspect (slope orientation) on the early postfire recovery of Pinus brutia forest. The study site was the area of 2008 Serik-Tasağıl Fire, one of the largest forest ...

 

Upscaling species richness and abundances in tropical forests

  
Science Advances, Vol. 3, No. 10. (18 October 2017), e1701438, https://doi.org/10.1126/sciadv.1701438

Abstract

The quantification of tropical tree biodiversity worldwide remains an open and challenging problem. More than two-fifths of the number of worldwide trees can be found either in tropical or in subtropical forests, but only ≈0.000067% of species identities are known. We introduce an analytical framework that provides robust and accurate estimates of species richness and abundances in biodiversity-rich ecosystems, as confirmed by tests performed on both in silico–generated and real forests. Our analysis shows that the approach outperforms other methods. In ...

 

Daily synoptic conditions associated with large fire occurrence in Mediterranean France: evidence for a wind-driven fire regime

  
International Journal of Climatology, Vol. 37, No. 1. (January 2017), pp. 524-533, https://doi.org/10.1002/joc.4680

Abstract

Changes in wildfire activity in the Mediterranean area over recent decades increase the need for a better understanding of the fire–weather relationships and for the development of reliable models to improve fire danger prediction. This study analyses daily synoptic and local weather conditions associated with the occurrence of summer large fires (LFs) in Mediterranean France during recent decades (1973–2013). The links between large fire occurrence and synoptic conditions are analysed with composites of sea level pressure and winds at 925 hPa ...

 

Prepare for larger, longer wildfires

  

Abstract

Climate change makes land management more urgent than ever, says Kathie Dello. [Excerpt] [...] Scientists must walk a careful line when attributing specific events to climate change. Wildfires are part of a healthy ecosystem and a fact of life in the western United States. Many aspects of a landscape affect them, including past fire suppression, land use and human carelessness. [\n] But climate change increases the threat: fires that do start are larger and last longer. Warmer summer temperatures mean more evaporation. Overall, ...

 

Natural climate solutions

  
Proceedings of the National Academy of Sciences, Vol. 114, No. 44. (31 October 2017), pp. 11645-11650, https://doi.org/10.1073/pnas.1710465114

Abstract

[Significance] Most nations recently agreed to hold global average temperature rise to well below 2 °C. We examine how much climate mitigation nature can contribute to this goal with a comprehensive analysis of “natural climate solutions” (NCS): 20 conservation, restoration, and/or improved land management actions that increase carbon storage and/or avoid greenhouse gas emissions across global forests, wetlands, grasslands, and agricultural lands. We show that NCS can provide over one-third of the cost-effective climate mitigation needed between now and 2030 to stabilize ...

 

Polar wildfires and conifer serotiny during the Cretaceous global hothouse

  
Geology (11 October 2017), https://doi.org/10.1130/g39453.1

Abstract

Several highly effective fire-adaptive traits first evolved among modern plants during the mid-Cretaceous, in response to the widespread wildfires promoted by anomalously high atmospheric oxygen (O2) and extreme temperatures. Serotiny, or long-term canopy seed storage, is a fire-adaptive strategy common among plants living in fire-prone areas today, but evidence of this strategy has been lacking from the fossil record. Deposits of abundant fossil charcoal from sedimentary successions of the Chatham Islands, New Zealand, record wildfires in the south polar regions (75°–80°S) ...

 

Assessing risk and adaptation options to fires and windstorms in European forestry

  
Mitigation and Adaptation Strategies for Global Change In Mitigation and Adaptation Strategies for Global Change, Vol. 15, No. 7. (10 July 2010), pp. 681-701, https://doi.org/10.1007/s11027-010-9243-0

Abstract

Risks can generally be described as the combination of hazard, exposure and vulnerability. Using this framework, we evaluated the historical and future development of risk of fire and wind damage in European forestry at the national level. Fire risk is expected to increase, mainly as a consequence of an increase in fire hazard, defined as the Fire Weather Index in summer. Exposure, defined as forest area, is expected to increase slightly as a consequence of active afforestation and abandonment of marginal ...

 

Forest fires in Europe, Middle East and North Africa 2016

  

Abstract

[Excerpt: Foreword] Forests, agricultural land and natural areas continue to burn, both within and outside Europe. Lives of European citizens are lost and endangered. By early September 2017, wildfires have already burnt nearly 700 000 ha of land in the EU; hence this season will most likely be remembered as one of the most devastating wildfire seasons in Europe since records began. Moreover, sadly this year’s fires have taken a huge toll of lives in Southern Europe. Extreme weather conditions such ...

 

Forest structures across Europe

  
Geoscience Data Journal, Vol. 4, No. 1. (June 2017), pp. 17-28, https://doi.org/10.1002/gdj3.45

Abstract

Pan-European gridded datasets derived from a single methodology to inform researchers, policy makers and conservationists on the state of forest structures would improve our ability to study forests independent of political boundaries and along various gradients. Although National Forest Inventory (NFI) data provide information on the characteristics of forests, including carbon content, volume, height, and age, such spatial data is not available across Europe. Before this study, remotely sensed data covering all of Europe had not been utilized to produce multiple ...

 

The exceptionally hot summer of 2007 in Athens, Greece — A typical summer in the future climate?

  
Global and Planetary Change, Vol. 67, No. 3-4. (June 2009), pp. 227-236, https://doi.org/10.1016/j.gloplacha.2009.03.013

Abstract

Summer 2007 was abnormally warm for many areas of southeastern Europe, the Balkan peninsula and parts of Asia Minor with departures from the seasonal means exceeding 4 °C in some areas but also distinct periods of extremely hot weather. Greece experienced very likely the warmest summer of its instrumental history with record breaking temperatures being observed at a number of stations. The historical air temperature record of the National Observatory of Athens (NOA), extending back to the 19th century, was used in ...

 

Forest fires

  
In EMEP/EEA air pollutant emission inventory guidebook 2016 - Technical guidance to prepare national emission inventories, Vol. 21/2016 (2016), 11.B, https://doi.org/10.2800/247535

Abstract

[Excerpt: Overview] This chapter describes emissions from (naturally or man-induced) burning of non-managed and managed forests and other vegetation, excluding agricultural burning of stubble, etc. This includes domestic fires (fuel wood-, crop residue-, dung and charcoal burning) as well as open vegetation fires (forest, shrub- , grass- and cropland burning). According to Barbosa (2006, personal communication), 95 % of the forest fires in the Mediterranean region are related to human impact (negligence, arson, etc.). For the boreal area, Molicone et al. (2006) estimate 87 % of forest ...

 

How have past fire disturbances contributed to the current carbon balance of boreal ecosystems?

  
Biogeosciences, Vol. 13, No. 3. (04 February 2016), pp. 675-690, https://doi.org/10.5194/bg-13-675-2016

Abstract

Boreal fires have immediate effects on regional carbon budgets by emitting CO2 into the atmosphere at the time of burning, but they also have legacy effects by initiating a long-term carbon sink during post-fire vegetation recovery. Quantifying these different effects on the current-day pan-boreal (44–84° N) carbon balance and quantifying relative contributions of legacy sinks by past fires is important for understanding and predicting the carbon dynamics in this region. Here we used the global dynamic vegetation model ORCHIDEE–SPITFIRE (Organising Carbon and ...

 

Describing wildland surface fuel loading for fire management: a review of approaches, methods and systems

  
International Journal of Wildland Fire, Vol. 22, No. 1. (2013), 51, https://doi.org/10.1071/wf11139

Abstract

Wildland fuelbeds are exceptionally complex, consisting of diverse particles of many sizes, types and shapes with abundances and properties that are highly variable in time and space. This complexity makes it difficult to accurately describe, classify, sample and map fuels for wildland fire research and management. As a result, many fire behaviour and effects software prediction systems use a generalised description of fuels to simplify data collection and entry into various computer programs. There are several major fuel description systems currently ...

 

Climatological risk: wildfires

  
In Science for disaster risk management 2017: knowing better and losing less, Vol. 28034 (2017), pp. 294-305

Abstract

[Excerpt: Conclusions and key messages] There is a vast amount of information on wildfires at local, regional and global scales. However, problems remain at different scales in terms of harmonising or standardising practices for the assessment and management of wildfire risk. [\n] Resilience theory is providing a suitable framework by which to explain abrupt changes in socioecological systems. The importance of community participation and building social capital through collective learning and governance mechanisms has been highlighted as a required basis for building disaster resilience (Aldunce et al., 2015; Aldunce et al., 2016; Montiel and Kraus, 2010; O’Brien et al., ...

References

  1. SCION, 2009. Fire behavioiur app. https://www.scionresearch.com/research/forest-science/rural-fire-research/tools/fire-behaviour-smartphone-apps .
  2. NFPA, 2016 Firewise Communities Program. http://www.firewise.org/ .
  3. GOV.UK, n.d. LH1: Management of lowland heathlandhttps://www.gov.uk/countryside-stewardship-grants/management-of-lowland-heathland-lh1 .
  4. KWFW, 2014. Wildfire Threat Analysis (WTA):NERC-funded scoping project with Forestry Commission. http://www.kfwf.org.uk/_assets/documents/Wildfire_Threat_Analysis_post-project_report.pdf .
  5. HM Tresaury, 2013. Orange book: management of risk - principles and concepts. https://www.gov.uk/government/publications/orange-book .
  6. Cabinet Office, 2015. National Risk
 

Meteorological risk: extra-tropical cyclones, tropical cyclones and convective storms

  
In Science for disaster risk management 2017: knowing better and losing less, Vol. 28034 (2017), pp. 246-256

Abstract

[Excerpt: Conclusions and key messages] [::Partnership] Collaboration between forecast providers and end users in real time is essential during DRM, since the interpretation of the available information, the uncertainty associated with it and how this changes as new information becomes available should be made in consultation with qualified meteorologists and National Meteorological Services in particular. Information sharing, particularly observational, impact and warning data across national boundaries in real time, is of key importance. Improvements in forecasts will in part be driven by the interaction between fundamental atmosphere and ocean science with operational forecasting, so continued collaboration between forecasting centres and universities and ...

References

  1. AIR Worldwide, 2015. Preparing for Europe's Winter Storm Season with a Look Back at Niklas and Kyrill. http://www.air-worldwide.com/Publications/AIR-Currents/2015/Preparing-for-Europe-s-Winter-Storm-Season-with-a-Look-Back-at-Niklas-and-Kyrill/ .
  2. Anderson, G., Klugmann, D., 2014. A European lightning density analysis using 5 years of ATDnet data. Natural Hazards and Earth System Sciences 14(4), 815-829.
  3. Antonescu, B., Schultz, D.M., Lomas, F., Kühne, T., 2016. Tornadoes in Europe: Synthesis of the observational datasets. Monthly Weather Review.
  4. Bauer, P., Thorpe,
 

Hydrologic regulation of plant rooting depth

  
Proceedings of the National Academy of Sciences, Vol. 114, No. 40. (03 October 2017), pp. 10572-10577, https://doi.org/10.1073/pnas.1712381114

Abstract

[Significance] Knowledge of plant rooting depth is critical to understanding plant-mediated global change. Earth system models are highly sensitive to this particular parameter with large consequences for modeled plant productivity, water–energy–carbon exchange between the land and the atmosphere, and silicate weathering regulating multimillion-year-timescale carbon cycle. However, we know little about how deep roots go and why. Accidental discoveries of >70-m-deep roots in wells and >20-m-deep roots in caves offer glimpses of the enormous plasticity of root response to its environment, but the ...

 

General introduction and methodological overview

  
In Ph.D. Thesis: Integrating infra-specific variation of Mediterranean conifers in species distribution models - Applications for vulnerability assessment and conservation (2017), pp. 19-54

Abstract

[Excerpt] [:Forests ecosystems, climate change and conservation] [...] Despite their importance, we have lost approximately 1.3 % of the total forest area during the last decade, and although deforestation rates are decreasing, they are still high (data for the period 2000-2010 [...]). Nevertheless, fortunately, in some regions, such as Europe, we find an inverse trend with an increasing forest cover [...]. In Europe, 33 % of the total land area (215 million ha) are covered by forests from which more than half ...

References

  1. Aitken, S.N., Yeaman, S., Holliday, J. a., Wang, T., Curtis-McLane, S., 2008. Adaptation, migration or extirpation: climate change outcomes for tree populations. Evolutionary Applications, 1, 95–111.
  2. Allen, C.D., Macalady, A.K., Chenchouni, H., Bachelet, D., McDowell, N., Vennetier, M., Kitzberger, T., Rigling, A., Breshears, D.D., Hogg, E.H. (Ted), Gonzalez, P., Fensham, R., Zhang, Z., Castro, J., Demidova, N., Lim, J.H., Allard, G., Running, S.W., Semerci, A., Cobb, N., 2010. A global overview of drought and
 

Factors explaining the spatial distribution of hillslope debris flows: a case study in the Flysch Sector of the Central Spanish Pyrenees

  
Mountain Research and Development, Vol. 22, No. 1. (1 February 2002), pp. 32-39, https://doi.org/10.1659/0276-4741(2002)022[0032:fetsdo]2.0.co;2

Abstract

The spatial distribution of 961 debris flows in the Upper Aragón and Gállego valleys (Central Spanish Pyrenees) was analyzed. Most were located in the Flysch Sector (with a colluvium mantle derived from strongly tectonically modified materials), between 1000 and 1400 m above sea level, on 25?35° gradients with sunny exposure. These gradients were either hillslopes covered by frequently burned scrubland, abandoned fields, or reforested land, confirming the influence of land use and disturbed landscapes on the occurrence of debris flows. ...

 

Post-fire erosion response in a watershed mantled by volcaniclastic deposits, Sarno Mountains, Southern Italy

  
CATENA, Vol. 152 (May 2017), pp. 227-241, https://doi.org/10.1016/j.catena.2017.01.009

Abstract

[Highlights] [::] We describe a post-fire erosion response of a steep watershed in Italy. [::] The fire burned 11 ha of forest with high and moderate severity. [::] The erosion response was triggered by a convective rainstorm. [::] A hyperconcentrated flow resulted from sediment bulking of surface runoff. [::] Amount of soil loss was estimated. [Abstract] In this study we document a post-fire erosion response to a short-lived, intense rainstorm occurred on 6 September 2012 in the Sant'Angelo creek watershed, Sarno Mountains, Southern Italy. The rainstorm occurred one ...

 

History matters: previous land use changes determine post-fire vegetation recovery in forested Mediterranean landscapes

  
Forest Ecology and Management, Vol. 279 (September 2012), pp. 121-127, https://doi.org/10.1016/j.foreco.2012.05.020

Abstract

[Abstract] Land use changes and shifts in disturbance regimes (e.g. wildfires) are recognized worldwide as two of the major drivers of the current global change in terrestrial ecosystems. We expect that, in areas with large-scale land use changes, legacies from previous land uses persist and affect current ecosystem responses to climate-associated disturbances like fire. This study analyses whether post-fire vegetation dynamics may differ according to specific historical land use histories in a Mediterranean forest landscape of about 60,000 ha that was burnt ...

 

Shifts in community-level traits and functional diversity in a mixed conifer forest: a legacy of land-use change

  
Journal of Applied Ecology, Vol. 53, No. 6. (December 2016), pp. 1755-1765, https://doi.org/10.1111/1365-2664.12737

Abstract

[Summary] [::1] Historical reference conditions have long been used to guide the restoration of degraded ecosystems. However, a rapidly changing climate and altered disturbance regimes are calling into question the usefulness of this approach. As a consequence, restoration goals are increasingly focused on creating communities that are resilient to novel environmental stressors and emphasis is being placed on defining functional targets through the use of plant traits. While changes in forest structure and composition have received much attention, long-term changes in stand-level ...

 

Post-fire salvage logging alters species composition and reduces cover, richness, and diversity in Mediterranean plant communities

  
Journal of Environmental Management, Vol. 133 (January 2014), pp. 323-331, https://doi.org/10.1016/j.jenvman.2013.12.014

Abstract

[Highlights] [::] We tested the effects of post-fire salvage logging on plant communities. [::] Logging reduced plant species richness, diversity, and cover. [::] Species composition in salvaged sites resembled early-successional habitats. [::] Unsalvaged sites yielded greater tree regeneration. [Abstract] An intense debate exists on the effects of post-fire salvage logging on plant community regeneration, but scant data are available derived from experimental studies. We analyzed the effects of salvage logging on plant community regeneration in terms of species richness, diversity, cover, and composition by experimentally managing a ...

 

Newly discovered landscape traps produce regime shifts in wet forests

  
Proceedings of the National Academy of Sciences, Vol. 108, No. 38. (20 September 2011), pp. 15887-15891, https://doi.org/10.1073/pnas.1110245108

Abstract

We describe the “landscape trap” concept, whereby entire landscapes are shifted into, and then maintained (trapped) in, a highly compromised structural and functional state as the result of multiple temporal and spatial feedbacks between human and natural disturbance regimes. The landscape trap concept builds on ideas like stable alternative states and other relevant concepts, but it substantively expands the conceptual thinking in a number of unique ways. In this paper, we (i) review the literature to develop the concept of landscape ...

 

Effects of logging on fire regimes in moist forests

  
Conservation Letters, Vol. 2, No. 6. (December 2009), pp. 271-277, https://doi.org/10.1111/j.1755-263x.2009.00080.x

Abstract

Does logging affect the fire proneness of forests? This question often arises after major wildfires, but data suggest that answers differ substantially among different types of forest. Logging can alter key attributes of forests by changing microclimates, stand structure and species composition, fuel characteristics, the prevalence of ignition points, and patterns of landscape cover. These changes may make some kinds of forests more prone to increased probability of ignition and increased fire severity. Such forests include tropical rainforests where fire was ...

 

Patterns of fire severity and forest conditions in the western Klamath Mountains, California

  
Conservation Biology, Vol. 18, No. 4. (August 2004), pp. 927-936, https://doi.org/10.1111/j.1523-1739.2004.00493.x

Abstract

The Klamath-Siskiyou region of northwestern California and southwestern Oregon supports globally outstanding temperate biodiversity. Fire has been important in the evolutionary history that shaped this diversity, but recent human influences have altered the fire environment. We tested for modern human impacts on the fire regime by analyzing temporal patterns in fire extent and spatial patterns of fire severity in relation to vegetation structure, past fire occurrence, roads, and timber management in a 98,814-ha area burned in 1987. Fire severity was mapped ...

 

The concept of potential natural vegetation: an epitaph?

  
Journal of Vegetation Science, Vol. 21, No. 6. (December 2010), pp. 1172-1178, https://doi.org/10.1111/j.1654-1103.2010.01218.x

Abstract

We discuss the usefulness of the concept of Potential Natural Vegetation (PNV), which describes the expected state of mature vegetation in the absence of human intervention. We argue that it is impossible to model PNV because of (i) the methodological problems associated to its definition and (ii) the issues related to the ecosystems dynamics.We conclude that the approach to characterizing PNV is unrealistic and provides scenarios with limited predictive power. In places with a long-term human history, interpretations of PNV need ...

 

Human factors of fire occurrence in the Mediterranean

  
In Earth Observation of Wildland Fires in Mediterranean Ecosystems (2009), pp. 149-170, https://doi.org/10.1007/978-3-642-01754-4_11
edited by Emilio Chuvieco

Abstract

The Mediterranean region accounts the larger proportion of human caused fires in the world (95%) followed by South Asia (90%), South America (85%) and Northeast Asia (80%) (FAO 2007). Socio-economic changes which are occurring in Europe along with global warming result in an augment of fire risk. Systematic and reliable information on fire causes is necessary in order to improve wildland fire management. However, collection of information on forest fire causes and motivations is still quite restricted in most countries around ...

 

Investigation of root reinforcement decay after a forest fire in a Scots pine (Pinus sylvestris) protection forest

  
Forest Ecology and Management, Vol. 400 (September 2017), pp. 339-352, https://doi.org/10.1016/j.foreco.2017.06.005

Abstract

[Highlights] [::] Engineering resilience of Scots pine 4 years after forest fire has been quantified. [::] Spatial distribution of root reinforcement (RR) has been modeled. [::] RR decay by a factor of 3.6, 4 years after a stand replacing forest fire. [::] Natural regeneration has almost no root reinforcement 4 years after fire. [::] Decay of root mechanical properties determine most of RR loss. [Abstract] Natural disturbances may cause a temporary reduction or elimination of the protective effect of forests. The management of protection forests aims to influence ...

 

Wildfire impacts on the processes that generate debris flows in burned watersheds

  
Natural Hazards In Natural Hazards, Vol. 61, No. 1. (17 March 2012), pp. 217-227, https://doi.org/10.1007/s11069-011-9769-9

Abstract

Every year, and in many countries worldwide, wildfires cause significant damage and economic losses due to both the direct effects of the fires and the subsequent accelerated runoff, erosion, and debris flow. Wildfires can have profound effects on the hydrologic response of watersheds by changing the infiltration characteristics and erodibility of the soil, which leads to decreased rainfall infiltration, significantly increased overland flow and runoff in channels, and movement of soil. Debris-flow activity is among the most destructive consequences of these ...

 

How do root and soil characteristics affect the erosion-reducing potential of plant species?

  
Ecological Engineering (August 2017), https://doi.org/10.1016/j.ecoleng.2017.08.001

Abstract

[Highlights] [::] Fibrous roots are very effective in reducing flow erosion rates in sandy soils. [::] Soil texture and bulk density affects the erosion-reducing potential of plant roots. [::] Increasing soil bulk density hampers the erosion-reducing potential of fine roots. [::] Increasing sand content hampers the erosion-reducing potential of tap roots. [Abstract] Plant roots can be very effective in stabilizing the soil against concentrated flow erosion. So far, most research on the erosion-reducing potential of plant roots was conducted on loamy soils. However susceptible to incisive erosion ...

 

Exploring spatial patterns and drivers of forest fires in Portugal (1980–2014)

  
Science of The Total Environment, Vol. 573 (December 2016), pp. 1190-1202, https://doi.org/10.1016/j.scitotenv.2016.03.121

Abstract

[Highlights] [::] Wildfires are irregularly distributed in Portugal, both in ignitions and burnt area. [::] In 80% of the municipality's ignition density reveal a positive trend since the 80s. [::] Geographically Weighted Regression was used to identify relevant municipal drivers of fires. [::] Topography and population density were significant factors in municipal ignitions. [::] Topography and uncultivated land were significant factors in municipal burnt area. [Abstract] Information on the spatial incidence of fire ignition density and burnt area, trends and drivers of wildfires is vitally important in providing ...

 

Analysis of recent spatial–temporal evolution of human driving factors of wildfires in Spain

  
Natural Hazards, Vol. 84, No. 3. (2016), pp. 2049-2070, https://doi.org/10.1007/s11069-016-2533-4

Abstract

Fire regimes are strongly dependent on human activities. Understanding the relative influence of human factors on wildfire is an important ongoing task especially in human-dominated landscapes such as the Mediterranean, where anthropogenic ignitions greatly surpass natural ignitions and human activities are modifying historical fire regimes. Most human drivers of wildfires have a temporal dimension, far beyond the appearance of change, and it is for this reason that we require an historical/temporal analytical perspective coupled to the spatial dimension. In this paper, ...

 

Impacts of future land use/land cover on wildfire occurrence in the Madrid region (Spain)

  
Regional Environmental Change In Regional Environmental Change, Vol. 16, No. 4. (2016), pp. 1047-1061, https://doi.org/10.1007/s10113-015-0819-9

Abstract

This paper assesses the relative importance of socioeconomic factors linked to fire occurrence through the simulation of future land use/land cover (LULC) change scenarios in the Madrid region (Spain). This region is a clear example of the socioeconomic changes that have been occurring over recent decades in the European Mediterranean as well as their impact on LULC and fire occurrence. Using the LULC changes observed between 1990 and 2006 as a reference, future scenarios were run up to 2025 with the ...

 

A comparison of landscape fuel treatment strategies to mitigate wildland fire risk in the urban interface and preserve old forest structure

  
Forest Ecology and Management, Vol. 259, No. 8. (31 March 2010), pp. 1556-1570, https://doi.org/10.1016/j.foreco.2010.01.032

Abstract

We simulated fuel reduction treatments on a 16,000 ha study area in Oregon, US, to examine tradeoffs between placing fuel treatments near residential structures within an urban interface, versus treating stands in the adjacent wildlands to meet forest health and ecological restoration goals. The treatment strategies were evaluated by simulating 10,000 wildfires with random ignition locations and calculating burn probabilities by 0.5 m flame length categories for each 30 m × 30 m pixel in the study area. The burn conditions for the wildfires were chosen to ...

 

Retrieval of forest fuel moisture content using a coupled radiative transfer model

  
Environmental Modelling & Software, Vol. 95 (September 2017), pp. 290-302, https://doi.org/10.1016/j.envsoft.2017.06.006

Abstract

Forest fuel moisture content (FMC) dynamics are paramount to assessing the forest wildfire risk and its behavior. This variable can be retrieved from remotely sensed data using a radiative transfer model (RTM). However, previous studies generally treated the background of forest canopy as soil surface while ignored the fact that the soil may be covered by grass canopy. In this study, we focused on retrieving FMC of such forestry structure by coupling two RTMs: PROSAIL and PRO-GeoSail. The spectra of lower ...

 

Ecological stability of mixed-species forests

  
In Mixed-Species Forests (2017), pp. 337-382, https://doi.org/10.1007/978-3-662-54553-9_7

Abstract

In many parts of the world, forests are likely to face novel disturbance regimes as a result of global change processes, and there is concern that the capacity of forest ecosystems to withstand, recover from, or adapt to these novel disturbance regimes may decline. Creation and maintenance of species-diverse forests is seen as an important option to adapt forests to uncertain future disturbances. However, it is not known whether benefits of mixed-species forests consist mainly of risk spreading among tree species ...

 

Influence of landscape structure on patterns of forest fires in boreal forest landscapes in Sweden

  
Canadian Journal of Forest Research, Vol. 34, No. 2. (1 February 2004), pp. 332-338, https://doi.org/10.1139/x03-175

Abstract

To analyze the effect of landscape structure (viz. amount of wetlands) on the past forest fire regime in boreal Sweden, we reconstructed detailed fire histories by cross-dating fire scars in living and dead Scots pine (Pinus sylvestris L.) in two different landscape types: mire-free landscapes with a low proportion (1%?2%) of mires and mire-rich landscapes with a high proportion (21%?33%) of mires. Two localities were selected and at each one, adjacent mire-free and mire-rich areas of 256?601 ha were sampled. Over ...

 

Southern Annular Mode drives multicentury wildfire activity in southern South America

  
Proceedings of the National Academy of Sciences, Vol. 114, No. 36. (05 September 2017), pp. 9552-9557, https://doi.org/10.1073/pnas.1705168114

Abstract

[Significance] Fire is a key ecological process affecting ecosystem dynamics and services, driven primarily by variations in fuel amount and condition, ignition patterns, and climate. In the Southern Hemisphere, current warming conditions are linked to the upward trend in the Southern Annular Mode (SAM) due to ozone depletion. Here we use tree ring fire scar data obtained from diverse biomes ranging from subtropical dry woodlands to sub-Antarctic rainforests to assess the effect of the SAM on regional fire activity over the past ...

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