The province of South Kalimantan has the largest peat swamp that is named Danau Panggang Swamp with an area of 5,390.7 Ha. This swamp has ecological, economic and potential functions of a large fishery resource. The purposes of this study are to evaluate the exploitation rate of Snake Head Fish (Channa striata) in Danau Panggang Swamp, by population dynamic analysis using FISAT program of Von Bertalanffy method.  The results showed that the growth pattern of Snake Head Fish (Channa striata) has the tendency to grow negative allometric with 63.4 cm of long infifer (L¥), growth rate (k) 0.15 per year, theoretical age at the time of the fish is equal to 0 (t0) is -1.48257 years. While the natural mortality rate (M) was 0.43, the mortality rate due to catch (F) of 0.69/year and the total mortality rate  (Z) of 1.12/year, and the rate of exploitation value E = 0.62.  These results indicated that the exploitation rate of Head Snake Fish (Channa striata) in Danau Panggang swamp has a tendency to overfishing.

Abstract. Sofarini D, Herawati EY, Mahmudi M, Hertika AMS, Arfiati D, Musa M, Amin M, Supriharyono. 2019. Analysis of stomach content of piscivorous fishes caught in Danau Panggang Peatland, South Kalimantan, Indonesia. Biodiversitas 20: 3788-3793. The purpose of this study was to analyze the stomach content profile of piscivorous fishes caught at the reservaat station and the station without activity as The control station, in the Danau Panggang peatland. Sampling was carried out four times and the index of preponderance stomach content was determined in piscivorous fishes. The results showed there were nine fish species in the reservaat area, including Cryptopterus spp., Pangasius nieuwenhuisii, Chana striata, Anabas testudineus, Pangasius sp., Mastecembelus erythrotaenia, Macrognathus aculeatus, Mystus nigriceps, and Mystus nemurus. Their gut was dominated 89% by Chrysophyta, and 37.5% by Diatom and Navicula. In the area without activity, six species of fish were caught, including Cryptopterus spp, Pangasius nieuwenhuisii, Anabas testudineus, Pangasius sp, Mystus nigriceps, and Mystus nemurus, with 83% of their gut dominated by Diatom. The water temperature was 28.07-33.25º C, brightness (6-115 cm), pH of 4.23-6.97, dissolved oxygen (DO) (1.4-6.5 mg/L) and BOD (7.52-24.92 mg/L) i.e., water quality parameters that tend to be incompatible with the persistence of fishes. These limiting factors of peatland water and extreme conditions led to a limitation at availability of natural food for piscivorous fishes.

The purpose of this study was to determine the concentration of lead (Pb) in Cymodocea serrulata tissues (roots, rhizomes, and leaves) using the AAS method, also to figure out Pb's impact on seagrass' histology and elements using the SEM-EDX Mapping method. The results showed that the higher the concentration and the length of the planting period, the higher the accumulation of heavy metals in the seagrass tissues. In this study, Pb was largely accumulated in the leaves, roots, and rhizomes tissue. Moreover, the seagrass histology in the epidermis and endodermis underwent shape and structure changes; it also went through damage or thickening at 15 ppm concentration, compared to control. This study strengthens the usefulness and relationship of Cymodocea serrulata seagrass as a biological indicator of metal contamination in the waters.

Abstract. Rosalina D, Herawati EY, Musa M, Sofarini D, Risjani Y. 2019. Short communication: Anatomical changes in the roots, rhizomes, and leaves of seagrass (Cymodocea serrulata) in response to lead. Biodiversitas 20: 2583-2588. Runoff of heavy metals as a result of urban and industrial development is a potential threat for seagrass populations in the coast. The objectives of this study were to study the anatomical changes in the tissues of roots, rhizomes, and leaves of seagrass Cymodocea serrulata in response to treatment with different concentrations of lead (Pb) for different time durations. This experiment used heavy metal Pb from a solution of Pb (NO3)2-with a concentration of 0 ppm, 5 ppm, 10 ppm, and 15 ppm and the treatment period extended up to 4 weeks with 3 replications. Analysis of changes in anatomical features showed that exodermis and endodermis cells in the roots thickened as lead concentration increased. The air spaces in the root cortex and rhizome also widened. Thickening of cell walls occurred in the epidermis and endodermis of rhizome. Likewise, in the leaves, thickening occurred in the upper and lower cuticle and also the upper and lower epidermis. In general, changes in anatomical features of root, rhizome, and leaves were observed in response to increasing lead concentrations. The results showed that C. serrulata developed some level of tolerance to heavy metals, especially lead.

Banyaknya aktivitas antropogenik seperti pembuangan limbah industri dan domestik ke perairan menyebabkan terjadinya penurunan kulitas air, seperti halnya di sub DAS Martapura Kabupaten Banjar. Tentunya hal ini  patut diwaspadai mengingat keberadaan limbah akan berdampak terhadap kualitas lingkungan dan pengembangan kapasitas sumber daya dalam konteks pembangunan berkelanjutan. Tujuan penelitian ini adalah mengetahui kualitas air yang terdampak limbah sehingga dapat dijadikan sebagai indikator perencanaan pembangunan berkelanjutan di sub DAS Martapura secara khusus. Lokasi penelitian berada di sub DAS Martapura Kabupaten Banjar dengan 4 titik  sampling berdasarkan keberadaan sumber limbah  yang dominan. Kualitas air sungai diukur berdasarkan parameter fisika dan kimia. Analisis kualitas dan penentuan status mutu air menggunakan metode STORET. Hasilnya adalah (1) Parameter fisika-kimia perairan yang terdampak pencemaran  di  sub DAS  Martapura  Kabupaten  Banjar terutama :  DO, BOD, COD, pH dan suhu pada beberapa stasiun pengamatan nilainya telah melebihi baku mutu air sungai Kelas II menurut PP No. 22 Tahun 2021. (2) Hasil perhitungan status mutu air pada sub DAS Martapura menunjukkan total skor sebesar -18. Kondisi perairan di sub DAS Martapura menunjukkan diperlukannya usaha mitigasi dan adaptasi dampak pencemaran lingkungan yang terintegrasi untuk mendukung program pembangunan berkelanjutan. Kata kunci: Kualitas Air, Metode STORET, Sub DAS Martapura. Numerous anthropogenic activities like industrial and domestic waste disposal into the waters causes decreasing water quality, as is the case in the Martapura sub-watershed, Banjar Regency.  This should be watched out for considering waste will affect environmental quality and resource capacity development in context of sustainable development.The research purpose was to determine the water quality affected by waste, using it as an indicator of sustainable development planning in the Martapura sub-watershed specifically. The research location was the Martapura sub-watershed with 4 sampling points based on the presence of dominant waste source. River water quality was measured based on physical and chemical parameters. Quality analysis and determination of water quality status was done using the STORET method. The results are (1)The physico-chemical parameters of waters affected by pollution in the Martapura sub-watershed, Banjar Regency, especially: DO, BOD, COD, pH and temperature at several observation stations have exceeded the Class II river water quality standard according to Government Regulation No. 22 of 2021. (2)The results of the calculation of water quality status in the Martapura sub-watershed show a total score of-18. Martapura sub-watershed waters condition showed the need for integrated mitigation and adaptation of environmental pollution impacts to support sustainable development programs. Keywords: Martapura Sub-Watershed, STORET Method, Water Quality.

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Penurunan jumlah tangkapan di perairan reservat danau panggang kabupaten hulu sungai utara sebesar 2% pertahun dari 3145,1 ton (2010) menjadi 3.030,0 ton (2013) dan kehadiran ikan lais (Cryptopterus micronema) < 1% setiap tahunnya disusul ikan baung (Mystus nemurus) < 0,5% mengindikasikan penurunan kualitas air, produktivitas perairan dan lingkungan perairan secara keseluruhan sebagai sistem ekologi. Tujuan penelitian (a) mengidentifikasi kondisi limnologis perairan di zona penyangga kawasan reservat danau panggang dengan analisis kualitas air dan biological indeks; (b) menganalisis konfigurasi ruang dari aktivitas di lokasi dan nilai sumberdaya perairan dari karakter bioekologis; (c) menilai kondisi keseluruhan atribut perairan di zona penyangga; (d) memetakan profil zonasi untuk menjelaskan kondisi eksisting di lokasi penelitian. Metode analisis kualitas air dan biological indeks serta kuissioner disertai statistik deskriptif dan pemetaan. Konsentrasi bahan organik yang tinggi berasal dari limbah organik dan tingkat biodiversitas fitoplankton lebih dominan daripada zooplankton berupa kelompok Chlorophyta air tawar sebagai pakan alami bagi larva dan benih ikan. Struktur pemukiman di lokasi terhadap perairan 50-75%, pembudidaya dan nelayan sebagai profesi utama dengan 2-10 jenis ikan yang tertangkap serta 4 jenis yang kehadirannya rendah. Pemetaan faktor penyebab kerusakan zona penyangga berasal dari peningkatan pemukiman 30%, prilaku masyarakat, intensitas penangkapan dan illegal fishing

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