Karyotypic Studies in Ecotypes of Hippophaë rhamnoides L. from Romania

Truta, Elena; Capraru, Gabriela; Surdu, Stefania; Zamfirache, Maria Magdalena; Olteanu, Zenovia; Roșu, Crăița Maria; Oprică, Lăcrămioara

doi:10.1515/sg-2010-0021

Cited by 4 publications

(1 citation statement)

References 30 publications

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“…Sources: [6,16,17]; † ,+: positive effect of heat on germination; 0: no effect; −: negative effect; ‡ yes: seedlings have been observed after a fire but no quantitative data is available; high: the number of seedlings emerging after the fire is higher than the number of individuals before the fire; § high: more than 25% of seedlings survive the first summer; | soil: once the seeds are fully developed, they immediately detach themselves from the plant; aerial: seeds remain in the canopy after reaching full development; ¶ time needed for new seedlings to reach sexual maturity and start producing seeds; † † Indicates a non-transient seed bank; ‡ ‡ Indicates a transient seed bank.…”

Section: Processes Involvedmentioning

confidence: 99%

Impacts of Land Management on the Resilience of Mediterranean Dry Forests to Fire

et al. 2016

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Abstract:Wildfires have always been a part of the history of Mediterranean forests. However, forests are not always certain to regenerate after a wildfire. Whether they do depends on many factors, some of which may be influenced by land management activities. Failure to regenerate will cause a regime shift in the ecosystem, reducing the provision of ecosystem services and ultimately leading to desertification. How can we increase the resilience of Mediterranean forests to fire? Our approach to answering this question was twofold: first, we reviewed the literature to investigate chains of processes that allowed forests to regenerate (which we label Regeneration Mechanisms, or RMs); and second, we assessed the impact of selected management practices documented in the WOCAT database on these RMs. For the assessment, we evaluated the relation between the benefits and disadvantages of the land management practices on the one hand, and the hindering and supporting factors of the RMs on the other. We identified three distinct RMs that enable Mediterranean forests to recover, as well as the time frame before and after a fire in which they are at work, and factors that can hinder or support resilience. The three RMs enabling a forest to regenerate after a fire consist of regeneration (1) from a seed bank; (2) from resprouting individuals; and (3) from unburned plants that escaped the fire. Management practices were grouped into four categories: (1) fuel breaks; (2) fuel management; (3) afforestation; and (4) mulching. We assessed how and under what conditions land management modifies the ecosystem's resilience. The results show that land management influences resilience by interacting with resilience mechanisms before and after the fire, and not just by modifying the fire regime. Our analysis demonstrates a need for adaptive-i.e., context-and time-specific-management strategies.

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Section: Processes Involvedmentioning

confidence: 99%