Regeneration of Nothofagus dombeyi (Mirb.) Ørst. in little to moderately disturbed southern beech forests in the Andes of Patagonia (Argentina)

Forest Ecosystems, Journal Year: 2023, Volume and Issue: 10, P. 100126 - 100126

Published: Jan. 1, 2023

Natural forests and stands subjected to little moderate human impact are continuously declining worldwide with these, their biodiversity ecosystem services. Many Nothofagus in the south of South American continent a pristine state or only moderately impacted by humans. Forest grazing livestock, past still today often practiced non-sustainable way is, however, increasingly under discussion meet current environmental socio-economic challenges. Accordingly, we investigate regeneration dombeyi, keystone species Patagonian Andes, secondary Argentinian northern Patagonia, particularly addressing role disturbance through livestock at various intensities. We test hypothesis that this tree is favored and, thus, herb layer soil surface. In support our hypothesis, dombeyi was significantly higher terms individuals height classes grazed forests. Multivariate analysis shows significant positive effects pressure, cover, occurrence bare on dombeyi. Our results show an integration forest possible agroforestry systems can be adequate management option for stakeholders region. A also part fire prevention strategy. However, success pressure should monitored.

Language: Английский

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Bell-shaped tree-ring responses to air temperature drive productivity trends in long-lived mountain Mediterranean pines

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 890, P. 164103 - 164103

Published: May 20, 2023

We investigated the dendroclimatic response of a Pinus heldreichii metapopulation distributed over wide elevation interval (from 882 to 2143 m a.s.l.), spanning from low mountain upper subalpine vegetation belts in southern Italian Apennines. The tested hypothesis is that wood growth along an elevational gradient non-linearly related air temperature. During three years fieldwork (2012-2015) at 24 sites, we collected cores total 214 pine trees with diameter breast height 19 180 cm (average 82.7 ± 32.9 cm). used combination tree-ring and genetic methods reveal factors involved acclimation using space-for-time approach. Scores canonical correspondence analysis were combine individual series into four composite chronologies temperature gradient. Overall, June followed bell-shaped thermal niche curve, increasing until peak around 13-14 °C. A similarly was found previous autumn temperature, both signals interacted stem size rates, generating divergent between top bottom Increased tree belt consistent consequences under no drought stress. positive link uncovered all elevations April mean growing lowest showing strongest response. No differences found, hence long-lived species small geographical ranges may reverse their climatic lower bioclimatic zones environmental niche. Our study revealed high resistance capability Mediterranean forest stands, such vulnerability changing conditions highlights potential store carbon these ecosystems for coming decades.

Language: Английский

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Climate Sensitivity and Drought Legacy of Tree Growth in Plantation Forests in Northeast China Are Species- and Age-Dependent

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(2), P. 281 - 281

Published: Jan. 10, 2024

The occurrence, frequency, and severity of drought are accelerating due to global warming. Understanding the vulnerability plantation forests climate change, particularly events, is critical revealing underlying mechanisms tree resilience, recovery, acclimation, which important for management. How stand age affects sensitivity growth, as well direction, magnitude, duration legacy, in northeast China still unclear. In this study, we used MODIS-derived NDVI time series with gridded data from 2000 2020 fill knowledge gap. selected were dominated by four coniferous species: Korean pine (Pinus koraiensis), Scots sylvestris), Japanese larch (Larix kaempferi), Dahurian gmelinii). results show that growth differed among species groups. was mostly dependent upon precipitation, while determined primarily temperature. Old (21–40 years) trees (31–60 more sensitive temperature precipitation than young conspecifics, whereas old (41–60 less conspecifics. Furthermore, legacy lasted one year pine, larch, over three years pine. severely affected drought, larch. findings study can help improve forest management better adaptation future change.

Language: Английский

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Caring for the forests of an inland area in the era of climate change: a case study of Basilicata, Southern Italy

Forest - Rivista di Selvicoltura ed Ecologia Forestale, Journal Year: 2024, Volume and Issue: 21(2), P. 10 - 36

Published: March 28, 2024

Caring for the forests of an inland area in era climate change: a case study Basilicata, Southern ItalyThis provides overview Italy, including their recent history, dominant forest types, current management, and vulnerability to change wildfire.It outlines silvicultural management proposals that can be implemented new plan Basilicata Region is about adopt.The are based on principle adaptive support functionality, biodiversity ecosystem services.Silvicultural methods include continuous cover forestry, natural regeneration, species richness functional diversity, structural diversification, imitation disturbances, tree retention increase biodiversity.The characteristics forest-wood supply chain have been analyzed, highlighting weaknesses possible improvements.

Language: Английский

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Environmental and social impacts of carbon sequestration

Integrated Environmental Assessment and Management, Journal Year: 2024, Volume and Issue: unknown

Published: April 23, 2024

Abstract Climate change requires major mitigation efforts, mainly emission reduction. Carbon sequestration and avoided deforestation are complementary strategies that can promote nature conservation local development but may also have undesirable impacts. We reviewed 246 articles citing impacts, risks, or concerns from carbon projects, 78 others related to this topic. Most of the impacts cited focus on biodiversity, especially in afforestation social effects projects. Concerns were raised about project effectiveness, permanence stored, leakage. Recommendations include accounting for uncertainty, assessing both contribution climate change, defining permanence, creating contingency plans, promoting proposing alternative livelihoods, ensuring a fair distribution benefits, combining timber production sequestration, sustainable minimizing A holistic approach combines conservation, poverty alleviation must be applied. The potential occurrence negative does not invalidate projects makes it advisable conduct proper environmental impact assessments, considering direct indirect while maximizing positive ones, weighing trade‐offs between them guide decision‐making. Public participation transparency essential. Integr Environ Assess Manag 2024;00:1–27. © 2024 SETAC

Language: Английский

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