THE DIVERSITY AND ABUNDANCE OF SPECIES FAMILY OF POACEA IN THE FLOOD PLAIN OF GAJAHWONG RIVER, YOGYAKARTA, INDONESIA
DOI:
https://doi.org/10.11113/jt.v78.8336Keywords:
Diversity index, Gadjahwong river, physical – chemical, stratified random samplingAbstract
The Poaceae family is one of flowering plants with the most abundant groups of species, many species usefull for human life. The aim of this research was to study the diversity and species abundance of Poaceae Family in the banks ofGadjahwongRiverusing quadrate method that covering different altitudes as well as upstream, middle and downstream area. Samples were collected from the plots of 1 m x 1 m, that positioned through stratified random sampling. Data analysis was conducted using Canonical Correspondence Analysis (CCA). The results showed that 47 species were identified, with the highest number of species and diversity index were found in the midstream. The species abundance was varied in each location, and among them, a high abundance of Axonopus compressus was found in all locations. Based on the influence of physical-chemical factors, the presence of Poaceae species identified in this study could be categorized under the influence of (1) soil pH and potassium, (2) C-organic,(3) temperature, solid humidity, light intensity and nitrate,(4) the presence of phosphate and air temperature.Â
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