Deny Anjelus Iyai*, Meky Sagrim, Yubelince Yustensi Runtuboi and Stepanus Pakage
The identification and categorization of species-family districts provide a structured framework for analyzing the intricate patterns of lowland grasses, facilitating a comprehensive understanding of their ecological significance. In the current and ecological trend study, rarefaction is applied to estimate species richness. Technically it applies in cases where the sampling effort, number of individuals or samples, is not consistent across different locations. Extrapolation may be used to predict how a population or species might behave beyond the observed data range. This research aims to address this gap by employing extrapolation techniques, shedding light on the spatial and temporal variations of lowland grasses and their relationships with the Warpramasi lowland ecosystem. Methods had done by employing field research in four districts i.e. Warmare, Prafi, Masni, Sidey. Using quadrant 1 × 1 m2 and resulting 25 plots and ended up with total 100 plots were the technique of research done. All plants identified using field guide book and numerical data analyzed using software iNEXT. The finding shows that 195 species distributed around Warpramasi lowland valley as well as 428 families. Species plants found in Sidey district, i.e. 41 (21.03%), Masni district 43 species (22.05%), Prafi district 53 species (27.18%), and in Warmare district, i.e. 58 species (29.74%). The distribution of family around the districts consist of 23.36% found in Sidey district, 21.03% found in Masni district, and the last two districts subsequently Prafi and Warmare are 28.04% and 27.57%. From analysis of intraplotion and extrapolation using rareflaction and extrapolation, the flat curve of species and family richness shows identified and calculated and it is able to reach its detection limit with a horizontal graphic location and position. It is recognized that there are other plant species that have not been detected and are still present in the Warpramasi lowland ecosystem.
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