http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Soil respiration and microbial biomass in a savanna parkland landscape
spatio-temporal variation and environmental controls
(C) and nitrogen (N) in this region. The objective of
abiotic factors at this site. Larger pool sizes and
accompanied by higher SMB and potential C and N
and potential C mineralization rates in all landscape
and rainfall accounted for approximately 70% of the
biogeochemical changes inherent in this process may be
both a consequence and a direct cause of vegetation
combinations of soil temperature, soil water content,
controlled primarily by temperature and rainfall, and
distinct and not synchronous with that of soil
elements, implying that the increase in soil
elements, with highest rates during months with >30 mm
faster turnover rates for soil organic C and total N
grassland-to-woodland succession must recognize that
grassland-to-woodland succession. Efforts to manage
in remnant grasslands [] wooded landscape elements []
In southern Text, subtropical woodlands dominated by phics.
in this region. In addition, the importance of soil
indicate that soil fertility is enhanced following
Irrigation increased soil respiration but reduced SMB
landscape heterogeneity and woody plant encroachment
mineralization rates compared to grasslands,
Na-fixing woody legumes have largely replaced areas
non-irrigated landscape elements. These relationships
of precipitation. Temporal variation in SMB was less
partially attributable to enhanced microbial activity.
potential C and N mineralization rates in relation to
respiration and nutrient cycling may be secondary to soil
respiration in wooded landscape elements was
respiration rather than heterotrophic respiration.
respiration was due to root respiration. Linear
respiration, soil microbial biomass (SMB), and
respiration, suggesting that seasonal variation in
scale analyses indicating soil respiration is
Soil respiration varied seasonally in all landscape
soil respiration was driven by changes in root
soil respiration was significantly greater in 2 -1 h
structure could modify the biogeochemistry of carbon
suggesting the increased soil respiration was
that were once grassland. This change in ecosystem
this study was to quantify variation in soil
variation in soil respiration in both irrigated and
was evaluated with an irrigation experiment. Annual
water as a control over these biogeochemical processes
were consistent with previous ecosystem- and global-
"Major subject: Rangeland Ecology and Management".
Includes bibliographical references (leaves 57-65).