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1. Impacts of Pastoralists on Woodlands in South Turkana, Kenya: Livestock‐ Mediated Tree Recruitment

Author:
Reid, Robin S.; Ellis, James E.
Source:
Ecological applications 1995 v.5 no.4 pp. 978-992
ISSN:
1051-0761
Subject:
Acacia tortilis; arid lands; desertification; diet; ecosystems; livestock; pods; rain; rangelands; reproduction; seedling emergence; seedlings; soil; species recruitment; trees; woodlands; woody plants; Kenya
Abstract:
... Since the turn of the century, African pastoralists have been held responsible for overuse of woody plants and for the degradation and desertification of many arid and semiarid lands. We analyzed the impacts of pastoral nomads and their livestock on the recruitment (establishment to first reproduction) of Acacia tortilis, a dominant tree in the dry woodlands of South Turkana, Kenya, where Acacia s ...
DOI:
10.2307/2269349

2. Lightning Estimates of Precipitation Location and Quantity on the Sevilleta Lter, New Mexico

Author:
Gosz, James R.; Moore, Douglas I.; Shore, Gregory A.; Grover, Herbert D.; Rison, William; Rison, Carol
Source:
Ecological applications 1995 v.5 no.4 pp. 1141-1150
ISSN:
1051-0761
Subject:
algorithms; biogeochemical cycles; detritivores; gauges; geographic information systems; herbivores; lightning; models; monitoring; planning; prediction; primary productivity; rain; relative humidity; satellites; semiarid zones; storms; summer; temporal variation; vegetation; New Mexico
Abstract:
... Typically, 50‐70% of the total annual precipitation in New Mexico can be produced by convective thunderstorms during the period June through September. These thunderstorms are accompanied by intense lightning and characteristically produce heavy, localized rainfall resulting in high spatial variation in precipitation inputs. During other months precipitation over the entire Sevilleta (10⁵ ha) ofte ...
DOI:
10.2307/2269361