Ekosistem Sungai outlet Waduk Sermo merupakan ekosistem buatan yang menjadi habitat bagi jenis ikan, tumbuhan, plankton, burung, mamalia, reptilia, serangga, dan amfibi hidup, berkembang biak, serta mencari makan. Beberapa diantaranya juga merupakan jenis hewan dan tumbuhan endemik. Alasan pemilihan burung sebagai objek tidak terlepas dari peranan burung yang luar biasa dalam ekosistem dan perannya dalam bioindikator keanekaragaman. Penelitian ini bertujuan untuk mengetahui keanekaragaman komunitas burung dan status konservasinya di daerah aliran sungai waduk Sermo. Metode penelitian ini menggunakan metode jelajah dengan analisis deskriptif. Dalam penelitian, berhasil dijumpai 20 spesies burung yang terdiri atas family Apoidae, Hirundinidae, Rallidae, Columbidae, Nectarinidae, Sylvidae, Pycnonotidae, Alcedinidae, Cuculidae, Estrildidae, Dicaeidae, Accipitridae, Ardeidae, Hemiprocnidae dan Rallidae dengan 2 spesies burung endemik, 1 spesies rawan secara internasional serta 1 spesies dilindungi di Indonesia. Dalam penelitian ini didapatkan nilai Indeks keanekaragaman Shannon-Wiener sebesar 2,21 dan indeks Evenness sebesar 0,73. Daerah aliran sungai outlet waduk sermo merupakan wilayah penting bagi burung karena merupakan habitat bagi burung endemik dan dilindungi. Kata Kunci : Burung; Sungai Waduk Sermo; Terancam punah
The intertidal zone is the area between the highest and lowest tides, which represents the transition from ocean conditions to land conditions. This study aimed to determine the diversity and distribution of mollusks that exist along the intertidal zone of Nglambor Beach, between August and November 2020. Observations of all molluscs were carried out at two random stations using 10 plots measuring 1 x 1 m 2 with 5 meters. A total of two classes of Mollusca (Gastropod and Bivalvia) belonging to twelve families and 19 species were found from upper to lower an intertidal zone. The upper intertidal zone was recorded to have the highest diversity and an evenness index (Shannon-Wiener diversity index: H ’= 2.524 and Pielou evenness index: J’ = 0.932) compared to the middle and lower zones. It can be concluding that the diversity index in the study location is categorized as medium and its evenness is high. Thais hippocastanum is the most dominant species found in the upper and middle zones, while Thais tissoti dominates in the lower zone. This research contributed to a preliminary checklist on molluscs, which will support a baseline study on the intertidal in future.
This study aims to investigate the community composition similarity of invertebrates in the Nglambor intertidal zone. The similarity of invertebrate communities in the Nglambor intertidal zone in Indonesia was studied in August and September 2020.. The data of occurring invertebrates and algae were obtained by plot method. Abiotic factors such as water pH, light intensity, and salinity were measured at each station. The similarity in invertebrate communities among habitat types was determined using the Dice’s coefficient, meanwhile to estimate similarities in habitat utilization we use Jaccard’s coefficient in PAST 4 software. Both invertebrate community similarity and habitat utilization were displayed in an cluster dendrogram. A total of five phyla was recorded, comprising Annelida, Arthropoda, Echinodermata, Mollusca and Nemertea. Algae cover varies from each station with the average cover reaches 52%. The result of the cluster analysis showed different models of invertebrate community similarity and habitat use that may be used for species conservation.
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