Struktur Komunitas Perifiton Pada Lamun Jenis Thalassia hemprichii dan Cymodocea rotundatta di Kawasan Pantai Sanur

Abstract

Seagrass has function as nursery ground, spawning ground, feeding ground and habitat for many coastal organism (benthic, fish and epiphytes). Tourism activities in Sanur beach, the habitat of seagrass, could change the water condition, it indirectly influencing the existences of seagrass plants and periphyton in Sanur beach. The aim of this study are to analyze community structure of periphyton on seagrass leaves (Thalassia hemprichii and Cymodocea rotundatta) and its relationship with water parameters in four stations at Sanur beach area that has the unique characteristics. Water parameters measured were temperature, salinity, DO (Dissolved oxyen), pH, nitrate, phosphate, and TSS (Total Suspended Solid). Data analysis using PCA (Principal Component Analysis) to see the parameters that most influence on the abundance of periphyton. The results showed diversity index (H’) of periphyton is moderate, eveness index (E) moderate to high, and dominance index (C) is low to medium. It concluded that conditions of Sanur waters is stable but it is easily changed due to anthropogenic influences. PCA analysis showed that the parameters of the water have different effects on the abundance of periphyton at each seagrass leaves. Periphyton on Thalassia hemprichii was influenced by TSS, while Cymodocea rotundatta was influenced by phosphate, nitrate, temperature, DO, and TSS.

Community structure of periphyton at floating net cages and non-floating net cages in Laut Tawar Lake, Aceh Tengah

“…The factors that affect species uniformity include chemical and organic pollution, damage to natural habitats such as land changes for other uses and changes [36]. Non-KJA areas obtained results ranging from 0.63 to 0.71, this is included in category E > 0.6, this indicates a high uniformity index, meaning that the distribution of these individuals is almost evenly distributed or there are no dominant species [37].…”

Struktur Komunitas Mikroalga Epifit Pada Substrat Buatan Di Perairan Pulau Serangan, Bali

“…Sedangkan kategori keanekaragaman dan dominansi dapat dilihat bahwa genus mikroalga epifit cukup beragam dan tidak ada yang mendominasi, sehingga dapat diketahui kondisi Perairan Pulau Serangan masih tergolong bagus. Kondisi kategori indeks serupa juga ditemukan di beberapa perairan sekitar yakni Sanur, Sindu, Semawang dan Mertasari oleh Pratama et al (2017).…”

Epiphytic microalgae community as aquatic bioindicator in Brantas River, East Java, Indonesia

“…This is because the vegetation acts as a stabilizer for temperature and humidity. The temperature in the Brantas River can also be tolerated by epiphytic microalgae, with the optimal temperature for living periphyton of 27-31 o C (Pratama et al 2017). Current velocity is influenced by wind and the substrate in the form of mud, sand, or rock.…”

“…According to Xue et al (2016), pollution can come from fertilization, animal waste and human waste causing high nitrates in rivers or lakes. Nitrate content in waters can affect Periphyton biomass in waters (Pratama et al 2017). The high content of orthophosphate in waters can occur due to household waste from residential areas in the form of detergents.…”