Another limitation of soil macrofauna research
has been that funding bodies are concerned with
agricultural land use only and have a three to
five-year life span for projects. This prevents work
being done on native fauna in naturally vegetated
regions or transcending boundaries between agricultural
and naturally vegetated land. The funding
time frame of three to five years also puts
considerable constraints on research outcomes
and actively discourages researchers from establishing
long-term projects/field sites. This type of
disincentive precludes important research which
needs to be over several seasons to be certain of
experimental trends vs. seasonal variation, and
also to be aware of the appropriate spatial and
temporal sampling scales. The results from a year
long study can be misleading or inconclusive,
especially if the year records a below or well
above average rainfall or soil temperature. In
Australia there have been only two studies which
have sampled earthworm populations for more
than 1 year (3 years, Kingston, 1989; Hutchinson
and King, 1980). Often conclusions have been
based on one sampling (Doube et al., 1994),
sometimes with no indication whether soil moisture
conditions were optimal.
Another limitation of soil macrofauna researchhas been that funding bodies are concerned withagricultural land use only and have a three tofive-year life span for projects. This prevents workbeing done on native fauna in naturally vegetatedregions or transcending boundaries between agriculturaland naturally vegetated land. The fundingtime frame of three to five years also putsconsiderable constraints on research outcomesand actively discourages researchers from establishinglong-term projects/field sites. This type ofdisincentive precludes important research which needs to be over several seasons to be certain ofexperimental trends vs. seasonal variation, andalso to be aware of the appropriate spatial andtemporal sampling scales. The results from a yearlong study can be misleading or inconclusive,especially if the year records a below or wellabove average rainfall or soil temperature. InAustralia there have been only two studies whichhave sampled earthworm populations for morethan 1 year (3 years, Kingston, 1989; Hutchinsonand King, 1980). Often conclusions have beenbased on one sampling (Doube et al., 1994),sometimes with no indication whether soil moistureconditions were optimal.
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