Pengetahuan tentang reproduksi ikan merupakan bagian penting dalam pengelolan perairan secara berkelanjutan. Penelitian dilakukan pada bulan FebruariJuli 2013, dengan tujuan memperoleh informasi beberapa aspek reproduksi ikan belida (Notopterus notopterus) seperti nisbah kelamin, tingkat kematangan gonad, indeks kematangan, ukuran pertama kali matang gonad, fekunditas, dan tipe pemijahan. Pengambilan sampel menggunakan jaring insang (gill net) dengan ukuran 2, 2,5, 3, dan 4 cm. Masing-masing jaring insang memiliki panjang 30 m dan lebar 2 m. Ikan belida yang tertangkap selama penelitian berjumlah 497 ekor, yang terdiri dari 237 ekor ikan jantan dan 260 ekor ikan betina. Nisbah kelamin ikan jantan dan betina relatif seimbang. Ikan belida jantan lebih cepat matang gonad dibandingkan ikan betina. Ikan belida memijah setiap bulan pengamatan selama penelitian dengan tipe pemijahan bertahap (partial spawning). Ukuran pertama matang gonad ikan belida jantan berada pada kisaran panjang 135 mm dan ikan betina 162 mm. Fekunditas ikan belida berkisar antara 1.0526.057 butir. Fekunditas tidak dipengaruhi oleh panjang maupun bobot tubuh. Untuk menjaga kelestarian ikan belida, maka ukuran mata jaring yang dioperasikan sebaiknya berukuran lebih dari 30 mm atau setara dengan 1,5 inci.

Mangrove is a one of high - level plants becouse it has structure roots, branches and leafes. Mangrove commonly was found in the delta or brakishwater, but has ecological benefit as well as economic value. Mangrove found in the intertidal zone and high tide level. This research was aimed to analysis important value aspect of species mangroves at coastal area of Pangkalpinang City. This study uses a purposive sampling method. Data was collected using the line and plot transect method (LTP) and hemisphere photography agreed upon for mangrove monitoring in the COREMAP-CTI. The results showed that Mangrove composition found in 5 stations as many as 22 species mangroves which were classified into 10 family Rhizophoraceae, Sonneratiaceae, Avicenniaceae, Meliaceae, Combretaceae, Rubiaceae, Euphorbiaceae, Myrcinaceae, Arecaceae, Malvaceae, Pteridaceae. The type of vegetation that has the highest INP value at the capling level is Rhizophora apiculata BI. of 266.65%, and The type of vegetation that has the highest INP value at the sapling level is Rhizophora apiculata BI. of 202.85%. Dominance species found in 5 station is Rhizophora apiculata BI and Sonneratia alba.

The purpose of this study is to determine the water quality analysis in South Bangka Regency, especially the coastal area, by analyzing the physical-chemical conditions and suitability of salt pond locations. The location of study was conducted in the coastal area of Mempunai, Batu Perahu, Kubu, Tanjung Kemirai, and Puding. The location of study was conducted in the coastal area of Mempunai, Batu Perahu, Kubu, Tanjung Kemirai, and Puding. During the present investigation the minimun and maximum value of water temperature (29 – 32oC), brightness (0,32 – 0,87 m), current (0 – 0,35 m/s), tidal are commonly diurnal (one high and one low tide each day), pH (6,7 – 8,2), salinity (30 – 33,2 o/oo) These areas are dominated by sand and clay. The result of salt pond location suitability analysis is based on water quality in the coastal area. Mempunai, Kubu, Tanjung Kemirai and Puding Beach generally quite-appropriate for salt pond location, different with coastal area of Batu Perahu have inappropriate category for suitability of salt pond location

This research was conducted in the coastal area of Pangkalpinang, Bangka Belitung Province which has an area of 89.4 km2 with a coastline of 36 km2 and is overgrown by mangrove communities that tend to be varied. The research aims to know mangrove community structure at the coastal Pangkalpinang City. This study uses a survey method consisting of 5 observation stations. Mangrove community data were collected using purposive sampling and line transect plot (LTP) methods; 30 m. Data analysis used was an ecological index consisting of a diversity index (Shannon Wienner), a uniformity index (Evenness), and a dominance index (Simpsons). The results showed that 22 species of mangroves were found in the coastal area of Pangkalpinang City, consisting of true mangroves (major and minor) and 2 species of associated mangroves. The type of Analysis of mangrove community structure includes diversity and evenness index at station 5 compared to other stations.  However, the dominance index at station 5 was higher compared to the other stations, which was almost close to 1. Where the mangrove population of each type was not the same and there was a tendency for the population to be dominated by one type of mangrove.Keywords: Diversity; Dominance; Unformity;  Pangkapinang AbstrakPenelitian ini dilakukan di Wilayah Pesisir Kota Pangkalpinang, Provinsi Kepulauan Bangka Belitung. Pangkalpinang merupakan ibukota propinsi Kepulauan Bangka Belitung yang memiliki area sebesar 89.4 km2 dengan panjang garis pantai 36 km2 dan banyak ditumbuhi oleh komunitas mangrove yang cukup bervariasi. Penelitian ini bertujuan untuk mengetahui struktur komunitas mangrove di wilayah pesisir Kota Pangkalpinang. Penelitian ini menggunakan metode survey yang terdiri dari 5 stasiun pengamatan. Pengampilan data komunitas mangrove yaitu dengan menggunakan metode purposive sampling dan line transect plot (LTP) sepanjang 30 meter. Analisis data yang digunakan adalah indeks ekologi yang terdiri dari indeks keanekatagaman (Shannon Wienner) , indeks keseragaman (Eveness), dan indeks dominansi (Simpsons). Hasil penelitian menunjukkan bahwa ditemukan 22 jenis mangrove di wilayah pesisir Kota Pangkalpinang yang terdiri dari mangrove sejati (mayor dan minor) serta 2 spesies dari mangrove asosiasi. Jenis mangrove yang memiliki kelimpahan jenis tertinggi di 5 lokasi penelitian adalah famili Rhizophoraceae. Analisis struktur komunitas mangrove yang meliputi keanekaragaman dan indeks kemerataan pada stasiun 5 dibandingkan stasiun lainnya. Namun indeks dominasi pada stasiun 5 lebih tinggi dibandingkan stasiun lainnya yang hampir mendekati 1. Dimana populasi mangrove masing-masing jenis tidak sama dan terdapat kecenderungan populasi didominasi oleh satu jenis mangrove. Kata kunci:    Dominansi; Keanekaragaman;  Keseragaman; Pangkalpinang

Caesionidae is one of the first commodity from a kind of varieties fishes in Nusantara Fishery Harbour (PPN) at Sungailiat, Bangka Regency. Caesionidae is consumption fish and become important food source for human. People call this fish as Yellow tail fish because it has yellow tail and the upper body of this fish is dominate by yellow colour. In scientific name, this fish named as caesiocuning. On local name, yellow tail fish named “delah”.This research aims to analyze the charachter of morphometric and meristic of yellow tail fish in PPN Sungailiat, Bangka Regency on December 2018 to januari 2019. The data was taken using random sampling method. This research takes 23 morfometric and 9 meristicparameters.The character of morphometric showed that the yellow fish tail has Total Length body 12-18,3cm. The characters of meristic of Yellow tail fusilier in PPN Sungailiat Bangka Regency showed has the formula of Dorsal Rays, Anal Rays, Pectoral Rays, Ventral Rays, and Caudal Rays in order are D.IX 15- D.X 15, A.III 9- A.III 11, P.18, V.19-V.20, and C.18-C.22. The final result of classification showsthat the name fish in PPN Sungailiat (Bangka Regency),is Lutjanus vitta (Lutjanidae).