Altered fire regimes
نویسندگان
چکیده
منابع مشابه
Fire Regimes , Past and Present
Fire has been an important ecosystem process in the Sierra Nevada for thousands of years. Before the area was settled in the 1850s, fires were generally frequent throughout much of the range. The frequency and severity of these fires varied spatially and temporally depending upon climate, elevation, topography, vegetation, edaphic conditions, and human cultural practices. Current management str...
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The persistence of quaking aspen (Populus tremuloides Michx.) is of significant importance to land managers in the Rocky Mountain region. Fire suppression in the past century has been implicated as a mechanism influencing aspen population dynamics, as aspen are generally considered an early seral disturbance adapted species. The heterogeneity of aspen community assemblages and fire regimes make...
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California shrubland wildfires are increasingly destructive, and it is widely held that the problem has been intensified by fire suppression, leading to larger, more intense wildfires. However, analysis of the California Statewide Fire History Database shows that, since 1910, fire frequency and area burned have not declined, and fire size has not increased. Fire rotation intervals have declined...
متن کاملHuman influence on California fire regimes.
Periodic wildfire maintains the integrity and species composition of many ecosystems, including the mediterranean-climate shrublands of California. However, human activities alter natural fire regimes, which can lead to cascading ecological effects. Increased human ignitions at the wildland-urban interface (WUI) have recently gained attention, but fire activity and risk are typically estimated ...
متن کاملInterval squeeze: altered fire regimes and demographic responses interact to threaten woody species persistence as climate changes
© The Ecological Society of America www.frontiersinecology.org D this century, climate change is projected to cause profound plant species losses and migrations – and shifts in ecosystem structure and function – in many parts of the world (including several biodiversity hotspots; Malcolm et al. 2006). However, such assessments are based almost entirely on empirical niche (or climate envelope) m...
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ژورنال
عنوان ژورنال: Nature Sustainability
سال: 2018
ISSN: 2398-9629
DOI: 10.1038/s41893-018-0208-8