Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Douglas C. Andersen"'
Autor:
Douglas C. Andersen
Publikováno v:
The Southwestern Naturalist. 66
Autor:
Douglas C. Andersen
Publikováno v:
Journal of Arid Environments. 134:104-121
Knowledge of the factors affecting the vigor of desert riparian trees is important for their conservation and management. I used multiple regression to assess effects of streamflow and climate (12–14 years of data) or climate alone (up to 60 years
Autor:
Douglas C. Andersen
Publikováno v:
The Southwestern Naturalist. 61:8-17
I compared riparian cottonwood (Populus fremontii) productivity-discharge relationships in a relictual stand along the highly regulated Green River and in a naturally functioning stand along the unregulated Yampa River in semiarid northwest Colorado.
Autor:
Douglas C. Andersen
Publikováno v:
Ecohydrology. 11
Autor:
Douglas C. Andersen
Publikováno v:
Western North American Naturalist. 75:157-169
Mature tree mortality rates are poorly documented in desert riparian woodlands. I monitored deaths and calculated annual survivorship probability (Ps) in 2 groups of large (27–114 cm DBH), old (≥40 years old) Fremont cottonwood (Populus fremontii
Publikováno v:
Restoration Ecology. 22:582-589
Restoration of riparian forest productivity lost as a consequence of flow regulation is a common management goal in dryland riverine ecosystems. In the northern hemisphere, dryland river floodplain trees often include one or another species of Populu
Autor:
S. Mark Nelson, Douglas C. Andersen
Publikováno v:
The Southwestern Naturalist. 59:56-65
We investigated the effects of soil temperature and depth to ground water on first-year growth of a facultative floodplain phreatophyte, Glycyrrhiza lepidota, in a 2-×-2 factorial greenhouse experiment. We grew plants in mesocosms subirrigated with
Autor:
S.M. Nelson, Douglas C. Andersen
Publikováno v:
Journal of Arid Environments. 94:105-112
Climate change projections for semiarid and arid North America include reductions in stream discharge that could adversely affect riparian plant species dependent on stream-derived ground water. In order to better understand this potential impact, we
Autor:
S. Mark Nelson, Douglas C. Andersen, Laura G. Perry, Lindsay V. Reynolds, Patrick B. Shafroth
Publikováno v:
Global Change Biology. 18:821-842
Riparian ecosystems, already greatly altered by water management, land development, and biological invasion, are being further altered by increasing atmospheric CO2 concentrations ([CO2]) and climate change, particularly in arid and semiarid (dryland
Autor:
David J. Cooper, Douglas C. Andersen
Publikováno v:
River Research and Applications. 28:204-215
Dam releases used to create downstream flows that mimic historic floods in timing, peak magnitude and recession rate are touted as key tools for restoring riparian vegetation on large regulated rivers. We analysed a flood on the 5th-order Green River