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Journal : NICHE Journal of Tropical Biology

Community structure of algae epiphytic in different leaf litter of mangroves Hariyati, Riche; Suedy, Sri Widodo Agung; Rahadian, Rully
NICHE Journal of Tropical Biology Vol. 1, No. 2, Year 2018
Publisher : Department of Biology, Faculty of Sciences and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.685 KB) | DOI: 10.14710/niche.1.2.30-34

Abstract

Mangrove is a plant that has the morphological and physiological adaptations to habitats which influenced by a tide. This plant can grow and develop in an environment of high salinity and its soil conditions are less stable and aerobic. Litter mangrove is the main source for the availability of detritus and is the largest component constituent of a food web in a mangrove ecosystem environment. Algae epiphytic microalgae is a group that lives attached to the plant, including the mangrove litter. The study aims to assess the abundance and diversity of epiphytic algae on different types of mangrove leaf litter. The observed mangroves leaf litter were Avicennia alba, Sonneratia sp. and Rhizophora sp. Epiphytic algae were brushed on mangrove leaf litter covering an area of 6.25 cm2 and diluted with distilled water. Samples were observed under a microscope with a magnification of 400 x. Water quality parameters were measured in situ and the organic ingredients, total N and P were analyzed. The results showed that epiphytic algae on each type of mangrove leaf litter were not different. Rhizophora sp is the most abundant and the richest species compared with other types of litter that are equal to 622 individuals / cm2 and 26 species of epiphytic algae. While the abundance of Avicennia alba and Sonneratia sp were 459 ind/cm2 and 321 ind /cm2, in the coastal mangrove areas of Morodemak was found 28 species of epiphytic algae. The common epiphytic algae species found in all types of mangrove litter were Cymbella sp., Coscinodiscus sp., and Synedra ulna. In general, the group of Bacillariophyta (diatoms) is the dominant species in some mangrove leaf. 
Community structure of soil microarthropods in active and passive zones of Ngronggo landfill Salatiga Ari, Psn Masruri Sulistiyanto; Rahadian, Rully; Tarwotjo, Udi
NICHE Journal of Tropical Biology Vol. 2, No. 2, Year 2019
Publisher : Department of Biology, Faculty of Sciences and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1934.201 KB) | DOI: 10.14710/niche.2.2.1-6

Abstract

Soil microarthropods play a key role in decomposing organic materials. The objectives of this study were to compare the structure of soil microarthropods communities in the active and passive zones of Ngronggo landfill Salatiga. The sampling of ten soil samples in each active and passive zones was performed for soil microarthropods extraction and soil physical-chemical analysis. Soil microarthropods were extracted using modified Barlese-Funnel. Soil microarthropods data were analyzed to determine abundance, diversity, and similarity. Physical-chemical factors were measured, including soil texture, heavy metal content (Pb, Cd, Cu, Zn, and Hg) and organic matter. The results show that all attributes of structure of soil microarthropods communities in active zone are higher than in passive zone, i.e., the density, the species richness, the species diversity, and the evenness. In both zones, the composition of soil microarthropods tend to be different.. Organic matter is likely the most important soil physicochemical factors to form the microarthropod structure in active and passive zones. This study contributes a new information about the role of soil microarthropods in decomposing the disposal waste of material and it would be benefit for developing a bioindicator of waste decomposition in landfill area.