Abstract

An expression for predicting the number of species in a given area is described. Derivatives of this expression, to increase sampling efficiency in a vegetation stand, include a minimum of four separate subsamples; a maximum number of subsamples when less than 10% increment in new species is achieved; and subsample size. It is also suggested that species diversity in terms of species per unit area can be more consistent when derived from this expression. ’n Uitdrukking om die aantal spesies vir ’n bepaalde gebied te voorspel word beskryf. Afleidings van hierdie uitdrukking, om doeltreffendheid by die monsterneming van ’n plantegroeistand te verbeter, sluit die volgende in: ’n minimum van vier afsonderlike submonsterpersele; ’n maksimum aantal submonsterpersele wanneer die nuwe spesiesaanwas minder as 10% is; en submonsterperseelgrootte. Dit word ook voorgestel dat spesies diversiteit, ooreenkomstig spesies per eenheidoppervlakte, meer konsekwent kan wees wanneer dit van hierdie uitdrukking afgelei word.

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