South African Journal of Wildlife Research · 1976 · 165 citations · 4 references
Natural ResourcesEcologyForestryForest EcologyForest InventoryTerrestrial EcologySavanna EcologyVegetation Change DetectionVegetation CompositionVegetation Cover AssessmentVegetation MonitoringVegetation StructureData ProcessingHerbaceous Cover AssessmentHerbaceous Layer CompositionUnderstory Vegetation CompositionVegetation Composition ChangeVegetation Composition MonitoringVegetation SurveysVegetation Utilization Assessment
Assessing herbaceous and woody vegetation layers at different seasons is generally preferable. The study proposes a scheme to record vegetation composition and utilization across tree, shrub, and herbaceous layers. The scheme employs permanently located transects of variable size covering habitat variation, uses six printed forms—four for automatic data processing—to minimize subjective errors, and allows category definitions to be adapted to specific monitoring needs. Computer programs implementing the scheme were tested on two data sets with all options, including mature‑tree‑only versus all‑tree analyses, and were found to be bug‑free.
The paper descriptionbes a scheme for recording vegetation composition and utilization in the tree, shrub and herbaceous layers. It is based on a set of permanently located transects of variable size, distributed so as to cover the variation within previously determined habitat types. The assessment procedure is designed to minimize errors associated with subjective estimates and personal bias, and includes measurements wherever these are not unduly laborious or time consuming. Recording is carried out using six printed forms, four of which are designed for automatic data processing. The actual categories and definitions of use or damage on the forms may be changed to suit the needs of the particular monitoring programme. The computer programmes have been tested on two sets of data, using all the options (e.g. mature trees only vs. all trees) and are hopefully bug-free. It is usually preferable to assess the herbaceous and woody layers at different seasons. The last of the assessments (BROWSE) is not strictly a monitoring procedure, and is normally carried out as an independent exercise.
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W. T. Williams, P. Greig-Smith · Journal of Ecology · 1965 · 2.4K citations
THE DRY‐WEIGHT‐RANK METHOD FOR THE BOTANICAL ANALYSIS OF PASTURE
L. 't Mannetje, KP Haydock · Grass and Forage Science · 1963 · 433 citations
Agriculture, Botany, Plant Sciences +14