|dc.description.abstract||Vast areas of central Saskatchewan are occupied by aspen groves,
aspen forest and mixed-wood (Rowe, 1959). A part of the aspen forest
has been cleared and is now utilized as pastures. These pastures
may be referred to as 'wooded', 'bushland' or 'northern wooded' pastures.
Though, historically, the utilization of the wooded pastures can be
traced back to the times of early settlers, their development as
government sponsored pasture dates back to the early 1940's. While
the first government community pasture in the grassland zone was
established in 1922 at Matador (Moen, 1964), it was not until 1941
that a community pasture was set up at Beaver Hills in the forest
By the early 1950's it became obvious that the livestock
industry was being greatly hampered by insufficient grazing facilities.
The pastures in the grassland region could not cope with the increasing
demand for grazing needs due to low carrying capacity as a result of
frequent droughts. In the northern fringe of settlement there were
still present vast areas of unutilized submarginal lands under aspen
forest. The soil under aspen forest is podzolic, often low in fertility,
of sandy texture, stony and poorly drained in low lying areas so that its
tillage for cereal crops was not feasible.
The importance of wooded pastures would further increase with
the rising demand of beef production. Haase (1964) has outlined the
need and importance of increased forage production in Canada. He
suggested that an additional 15 million acres of improved land would
be needed by 1980. The investigators in various fields discussed
effectively the problems and needed fields of study in the
establishment of northern wooded pastures in a meeting on "The
development of pasture from bushlands in western Canada" under the
auspecies of Canada Department of Agriculture in 1964. Perhaps, the
most important aspect of the problems that were discussed at the
meeting, was the need for understanding the response of vegetation,
native as well as seeded, to grazing.
The present study was undertaken primarily to consider the
effect of grazing on herbaceous vegetation in wooded pastures. This
involved the selection and study of comparable grazed and ungrazed
stands under three different 'habitat' types: forest; forest,
cleared; and forest, cleared, ploughed and seeded. The study sites
were located in areas, potentially capable of supporting aspen forest
on podzolic, degraded black or grey wooded soil.
is the dominant tree species and Fragaria
subsecundum and Schizachne
purpurascens are the common herb species in undisturbed sites.
and Poa palustris
are the dominant grasses in cleared areas while Bromus
cristatum and Medicago
sativa are the most common species in seeded areas.||en_US