-Karyotype and meiotic studies were performed in 16 populations of seven Arenaria species growing in Iran. All the species studied showed 2n = 2x = 22 chromosome number supporting the earlier report on A. persica, A. insignis and A. gypsophiloides while the chromosome numbers of A. polycnemifolia, A. zargariana, A. szowitsii and A. minutissima are new to science. The chromosomes were mainly metacentric and submetacentric. The species studied differed signifi cantly in total size of the chromosomes, size of the short arms and the long arms, indicating the role of quantitative genomic changes in the Arenaria species diversifi cation. They also differed in their karyotype formulae indicating the occurrence of structural changes in their chromosomes. Meiotic analysis showed quadrivalent formation in Moorchegan population of A. persica and Kandovan population of A. insignis possibly due to the occurrence of heterozygote translocation between two pairs of chromosomes which in turn may increase the amount of genetic variability in the next generation. Cytomixis led to the formation of unreduced pollen grains in Mishoodagh population of A. gypsophiloides var. glabra, while B-chromosomes were observed in A. insignis and A. polycnemifolia species.
TPI Sendang Biru berada di Kabupaten Malang memiliki potensi yang besar baik dalam bidang penyediaan pasokan ikan ataupun sarana prasarana penunjang lainnya. Pelabuhan perikanan tersebut dipersiapkan sebagai pusat pertumbuhan ekonomi perikanan di wilayah selatan Provinsi Jawa Timur. Pemerintah melalui Direktorat Jenderal Perikanan Tangkap Kementerian Kelautan dan Perikanan Tahun 2018 telah menyelesaikan relokasi pembangunan kios ikan berkonsep higienis pada wilayah tersebut untuk menunjang mutu hasil ikan dan harga jual ikan tetap tinggi. Sejalan dengan hal tersebut Pemerintah Propinsi Jawa Timur saat ini melakukan pengembangan jalur lintas selatan untuk mempermudah aksesbilitas. Namun, adanya wabah pandemi Covid-19 saat ini menyebabkan dampak yang besar pada berbagai bidang termasuk bidang perikanan. Hal tersebut menyebabkan bukan hanya minat beli masyrakat yang menurun, namun keterbatasan jalur distribusi produk juga menghambat transaksi jual-beli masyarakat. Berdasarkan hal tersebut perlu dilakukan pelatihan dan pembinaan manajemen pemasaran produk-produk perikanan di TPI Sendang Biru berbasis media jual-beli online. Metode edukasi yang dilakukan adalah seminar dengan topik strategi pemasaran digital berbasis media sosial dan workshop berbasis toko online atau marketplace. Melalui program ini diharapkan dapat menjadi salah satu langkah awal dalam menghadapi tantangan-tantangan baru dalam penanggulangan pemulihan ekonomi pasca pandemi Covid-19, serta dapat memperluas jejaring pemasaran para nelayan atau penjual ikan di wilayah tersebut bahkan hingga keadaan normal kembali.
Coral reefs ecosystem of Bangsring provide both commercial and non-commercial goods and services. Local fishermen rely on reef fisheries while tourism activities have been growing in this area. Seeing that the economic benefits derived from coral reefs are vital to the economies of Bangsring communities, economic valuation of these benefits is necessary to guide sustainable and wise use of these resources and to provide useful information for improved decisions. The research was conducted between June 29 and August 9 of 2015 aimed to estimate the total economic value (TEV) of coral reefs of Bangsring, Banyuwangi Regency, included passive use values and direct use values. The research was a participatory case study where primary and secondary data were collected using the purposive sampling technique. The study revealed that the estimated TEV of the coral reefs of Bangsring was IDR 38.2 billion per year or IDR 2.9 billion per hectare per year with tourism contributing 66 %or IDR 25 billion per year of the TEV. The healthy coral reefs of Bangsring support local communities and generate billions of rupiahs annually; therefore, it is critical to manage the coral reefs of Bangsring sustainably for current and future generations.Keywords: total economic value, Bangsring, coral reefs ABSTRAK Pantai Bangsring memiliki ekosistem terumbu karang dengan potensi pemanfaatan yang cukup beragam. Nelayan sekitar menggantungkan hidupnya terhadap perikanan terumbu karang, sementara di sisi lain pariwisata terus mengalami perkembangan di kawasan tersebut. Melihat potensi pemanfaatan yang dimilikinya, maka diperlukan suatu analisis ekonomi ekosistem terumbu karang yang ada di kawasan tersebut untuk mengetahui kondisi, bentuk pemanfaatan dan bentuk pengelolaan terumbu karang di kawasan tersebut. Penelitian ini dilaksanakan pada tanggal 29 Juni hingga 9 Agustus 2015 di Pantai Bangsring, Desa Bangsring, Kecamatan Wongsorejo, Kabupaten Banyuwangi. Bentuk penelitian ini adalah studi kasus partisipatif, dimana data yang diambil merupakan data primer dan sekunder dengan metode pengambilan data secara purposive sampling. Dari hasil penelitian didapatkan bahwa total manfaat ekonomi (Total Economic Value) ekosistem terumbu karang di kawasan Pantai Bangsring adalah sebesar 38.2 Miliar Rupiah Per tahun atau 2.9 Miliar Rupiah Per hektar per tahun. Nilai guna yang memiliki nilai ekonomi terbesar berasal dari pemanfaatan wisata sebesar Rp. 25.031.431.497,90 atau 60% dari Total Economic Value. Terumbu karnag Pantai Bangsring yang berada dalam kondisi sehat dapat mendukung perekonomian masyarakat lokal dan menghasilkan milyarak rupiah pertahunnya, sehingga, pengelolaan kawasan Pantai Bangsring yang berkelanjutan sangat dibutuhkan untuk menjaga kelestarian sumber daya terumbu karang yang ada pada kawasan tersebut.Kata kunci : total manfaat ekonomi, Bangsring, terumbu karang
In the northern coast of East Java, mangrove naturally growth along the coastline of most regencies, and becomes the important factor in the sustainability of fisheries, protection and other environmental services for communities in coastal areas. The last few decades, satellite remote sensing becomes the most widely used tool for mangrove monitoring purpose. Various types of sensory satellite images are used for mapping areas, types and densities, estimating the mangrove biomass. Meanwhile, UAV (Unmaned Aerial Vehicle) is rapidly developed and quite affordable. Various footages and photogrammetry works carried out with the lightweight UAV. Therefore, utilizing UAVs for capturing mangrove areas can be an effective solution to identify area where rehabilitation should be conducted. The research aimed to use the consumer grade DJI Phantom 4 Pro for mapping 92,6 Ha mangrove area in Rejoso (Pasuruan) and 69,37 Ha of Sumberasih (Probolinggo). Result of this study shows the capability of UAV to provide detail mangrove image (canopy density, characteristics and environmental profile), which can be used to support the management activities, particularly mangrove replantation program. Also, it could be a low cost solution and time effective of mangrove monitoring, compared with previous approach of high-resolution satellite imagery.
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