TY - JOUR
T1 - The Role Of Large Floods In Maintaining Hyperarid Floodplains And Riparian Vegetation
AU - Jacoby, Y.
AU - Seely, M.
AU - Dahan, O.
AU - Enzel, Y.
AU - Grodek, T.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Hyperarid ephemeral streams have limited floodplains. However, when the
do form they, together with active channels edges have crucial role in
establishing riparian ecosystems. Large floods (a) can continually
accrete floodplains or destroy them, (b) recharge shallow alluvial
aquifers that maintain vegetation during dry periods, and (c) allow
vegetation germination on rarely wetted higher surfaces. Whereas the
active channel is subjected to short-term destruction by floods and
vegetation rejuvenation following it, floodplains can support vegetation
fed by shallow water table for longer periods. Here, we report short-
and long-term fluvial activity and floodplain accretion and vegetation
distribution in relationship to flood stage-magnitude and frequency. At
the lower reaches of the coarse gravelly, braided to anabranching Nahal
Arava, Israel and the sandy Kuiseb River, Namibia (
AB - Hyperarid ephemeral streams have limited floodplains. However, when the
do form they, together with active channels edges have crucial role in
establishing riparian ecosystems. Large floods (a) can continually
accrete floodplains or destroy them, (b) recharge shallow alluvial
aquifers that maintain vegetation during dry periods, and (c) allow
vegetation germination on rarely wetted higher surfaces. Whereas the
active channel is subjected to short-term destruction by floods and
vegetation rejuvenation following it, floodplains can support vegetation
fed by shallow water table for longer periods. Here, we report short-
and long-term fluvial activity and floodplain accretion and vegetation
distribution in relationship to flood stage-magnitude and frequency. At
the lower reaches of the coarse gravelly, braided to anabranching Nahal
Arava, Israel and the sandy Kuiseb River, Namibia (
KW - 1813 Eco-hydrology
KW - 1820 Floodplain dynamics
KW - 1821 Floods
KW - 1851 Plant ecology (0476)
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VL - 21
JO - Geophysical Research Abstracts
JF - Geophysical Research Abstracts
SN - 1029-7006
ER -