Fire History, Woodland Structure, and Mortality in a Piñon-Juniper Woodland in the Colorado National Monument
نویسندگان
چکیده
منابع مشابه
Transpiration and hydraulic strategies in a piñon-juniper woodland.
Anthropogenic climate change is likely to alter the patterns of moisture availability globally. The consequences of these changes on species distributions and ecosystem function are largely unknown, but possibly predictable based on key ecophysiological differences among currently coexisting species. In this study, we examined the environmental and biological controls on transpiration from a pi...
متن کاملHydraulic limits preceding mortality in a piñon-juniper woodland under experimental drought.
Drought-related tree mortality occurs globally and may increase in the future, but we lack sufficient mechanistic understanding to accurately predict it. Here we present the first field assessment of the physiological mechanisms leading to mortality in an ecosystem-scale rainfall manipulation of a piñon-juniper (Pinus edulis-Juniperus monosperma) woodland. We measured transpiration (E) and mode...
متن کاملTree mortality from a short-duration freezing event and global-change-type drought in a Southwestern piñon-juniper woodland, USA
This study documents tree mortality in Big Bend National Park in Texas in response to the most acute one-year drought on record, which occurred following a five-day winter freeze. I estimated changes in forest stand structure and species composition due to freezing and drought in the Chisos Mountains of Big Bend National Park using permanent monitoring plot data. The drought killed over half (6...
متن کاملProlonged experimental drought reduces plant hydraulic conductance and transpiration and increases mortality in a piñon–juniper woodland
Plant hydraulic conductance (k s) is a critical control on whole-plant water use and carbon uptake and, during drought, influences whether plants survive or die. To assess long-term physiological and hydraulic responses of mature trees to water availability, we manipulated ecosystem-scale water availability from 2007 to 2013 in a piñon pine (Pinus edulis) and juniper (Juniperus monosperma) wood...
متن کاملReduced transpiration response to precipitation pulses precedes mortality in a piñon-juniper woodland subject to prolonged drought.
Global climate change is predicted to alter the intensity and duration of droughts, but the effects of changing precipitation patterns on vegetation mortality are difficult to predict. Our objective was to determine whether prolonged drought or above-average precipitation altered the capacity to respond to the individual precipitation pulses that drive productivity and survival. We analyzed 5 y...
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ژورنال
عنوان ژورنال: Natural Areas Journal
سال: 2013
ISSN: 0885-8608,2162-4399
DOI: 10.3375/043.033.0308