ASIONALITAS REMAJA DI SURABAYA MENGIKUTI ORGANISASI PEMUDA HIJRAH SURABAYA “KAHF”

AbstractReligion is something that is multi-interpreted and absolute, and religion is not just about rituals between humansand their gods. Religion can also enter into horizontal human relations. Hijrah is a popular movement amoung youngpeople, this is seen from the path in social media which discusses a lot about hijrah. Apart from that many youngpeople are starting to look more syar’i and adopt a more religious lifestyle. In Surabaya there is a special communityto accommodate teenagers who want to hijrah, namely kahf. In religious studies, da’wah is usually delivered in aconservative way. But in kahf, da’wah is presented in a more modern way with themes that are still in contact withthe scope of adolescents in general. This research is looking for motives of adolescents in Surabaya to join the kahfhijrah community. The purpose of this study was to determine the motives and rational actions of young people inSurabaya to join kahf. This study uses qualitative research methods and phenomenology as the analysis knife. Thetheory used is Alfred Schutz motive theory and the analysis used is the interactive model analysis of Miles andHuberman. The results of this study indicate that the motives of adolescents in Surabaya to follow the activities of theSurabaya youth hijrah kahf because they had experienced the lowest phase of their lives and that was their affectiverational act.Keywords: hijrah; motives; rational actio

THE EFFECT OF DIFFERENT PLANT SPACING ON SEAWEED (Eucheuma cottonii) GROWTH TISSUE ISOLATION RESULTS WITH OFF BOTTOM METHOD IN GERUPUK WATERS

Penelitian ini bertujuan untuk mengetahui pengaruh perbedaan jarak tanam terhadap pertumbuhan rumput laut (Eucheuma cottonii) hasil kultur jaringan dengan metode patok dasar.Penelitian ini dilakukan perlakuan dengan perbedaan jarak tanam rumput laut hasil kultur jaringan. Beberapa refrensi budidaya rumput laut menganjurkan jarak tanam yang diterapkan adalah 25 cm. Namun, jarak tersebut diduga terlalu lebar karena ukuran bibit rumput laut Eucheuma cottonii hasil kultur jaringan lebih kecil (50 g) dari ukuran benih konvensional (100 g). Penelitian ini menggunakan Rancangan Acak Lengkap (RAL). Terdapat 4 peralakuan, yaitu P0 dengan jarak 25 cm sebagai perlakuan kontrol, P1 dengan jarak 20 cm, P2 dengan jarak 15 cm dan P3 dengan jarak 10 cm, dengan masing-masing 4 ulangan.Data hasil penelitian dianalisis menggunakan analisis sidik ragam atau analysis of variance (ANOVA) pada taraf nyata 5% dengan selang kepercayaan 95%. Hasil penelitian pertumbuhan mutlak paling tinggi didapatkan pada perlakuan P1 dengan nilai rata-rata 124 g, laju pertumbuhan spesifik paling tinggi terdapat pada perlakuan P1 dengan nilai rata-rata 4,15 %/hari, dan nilai rendemen karaginan menunjukkan hasil tidak berbeda nyata.Pengamatan rendemen karaginan pada Eucheuma cottonii menunjukkan hasil berurutan pada masing-masing perlakuan yaitu kontrol sebesar 17%, P1 dan P2 sebesar 16%, dan P3 sebesar 14%. Kesimpulan dari penelitian ini adalah jarak tanam memiiki pengaruh yang nyata terhadap pertumbuhan rumput laut Eucheuma cottonii kultur jaringan dengan metode patok dasar (off bottom). Dengan jarak tanam terbaik dalam penelitian ini adalah P1 (20 cm)This study aims to determine the effect of different plant spacing on the growth of seaweed (Eucheuma cottonii) tissue culture results using the bottom off method. This research uses a completely randomized design (CRD). This research was carried out treatment with different plant spacing tissue culture results. Some references on seaweed cultivation advocated applied planting distance is 25 cm. However, distance it is thought to be too wide due to the size of the Eucheuma cottonii tissue culture yields are smaller (50 g) than conventional seed sizes (100 g).There are 4 treatments, namely P0 with a distance of 25 cm as a control treatment, P1 with a distance of 20 cm, P2 with a distance of 15 cm and P3 with a distance of 10 cm, each with 4 replications with a seedling initial weight of 50 g. Research data were analyzed using analysis of variance or analysis of variance (ANOVA) at 5% significance level with a 95% confidence interval. The highest absolute growth was in the P1 treatment with an average value of 124 g, the highest specific growth rate was in the P1 treatment with an average value of 4.15%/day, and the carrageenan yield showed no significant difference. Observation of carrageenan yields on Eucheuma cottonii showed sequential results in each treatment namely control by 17%, P1 and P2 by 16%, and P3 by 14%. The conclusion of this research is distance planting has a real influence on the growth of seaweed Eucheuma cottonii tissue culture by off bottom method. The best planting distance in thid study is P1 (20 cm)

Survival Rate and Growth Rate of Transplant Acropora sp and Porites sp Corals in Kecinan, North Lombok

Coral reef ecosystem is an ecosystem that plays a vital role as spawning floor, feeding floor and nursery ground for marine biota. This study aims to determine the survival and in growth rate of Acropora sp and Porites sp sp corals transplanted using frame media. This research was done in Kecinan Coastal Waters, Malaka Village, Pamenang District, North Lombok Regency. West Nusa Tenggara. The method used in this study an experimental method with 2 month observation, which repeated in every 2 weeks. Coral growth rate is observed twice, at the beginning of coral planting and at the end of the observation. The frame media used were 4 units a size of 1 x 1 m2, which placed 30 coral fragments each. So the total number of coral fragments observed was 120 in the media frame at the same depth. Acropora sp corals that were able to survive until the end of the study reached 96.67% while Porites sp sp corals reached 86.67%. The growth rate of Acropora sp was obtained at a value of 0.51 cm/month, while for Porites sp sp was 0.37 cm/month. The two transplanted corals had different growth forms so that they had different growth rate values. Acropora sp coral had a branching growth form with a hollow and porous limestone structure while Porites sp sp had a massive growth form with a denser and harder limestone skeletal structure

The Effect of Adding Iodine to the Feed to Increase Growth and Survival Rate of Carp Seeds (Cyprinus carpio)

One of the factors that greatly influence the successful growth of cultivated fish is feed. The aim of this study was to examine the effect of iodine addition on the growth and survival rate of carp (Cyprinus carpio) seeds. This study used a completely randomized design (CRD) method with 4 treatments and 3 replications. 10 fish per unit each, with treatment P0 (feed without adding iodine), P1 (feed + iodine at a dose of 10 mg / kg), P2 (feed + iodine at a dose of 20 mg / kg), P3 (feed + iodine at a dose of 30 mg / kg). The results showed that there was no significant effect (p> 0.05) on the growth rate, feed conversion and survival rate of goldfish. So it can be concluded that the addition of iodine in feed supplementation up to a dose of 30 mg / kg does not have a significant effect on the growth rate of length and absolute weight, feed conversion, survival rate and iodine content in the body of goldfish (Cyprinus carpio). The best recommended dose of iodine for growth is 20 mg / kg of feed, although the results were not significantly different for growth. However, it can have an effect on the iodine content in the body of goldfish

POTENSI SUMBER DAYA EKOSISTEM PADANG LAMUN SEBAGAI ATRAKSI EKOWISATA BAHARI DI DUSUN POTON BAKO, JEROWARU, LOMBOK TIMUR

Padang lamun merupakan ekosistem esensial yang merupakan bagian dari ekosistem pesisir, meliputi fungsi ekologis dengan keanekaragaman hayati dan nilai ekonomi yang tinggi. Di samping itu, padang lamun juga memiliki potensi sebagai atraksi pariwisata berbasis lingkungan perairan atau yang lebih dikenal sebagai ekowisata bahari. Tidak seperti dua ekosistem pesisir lainnya, yaitu ekosistem terumbu karang dan mangrove, potensi ekosistem padang lamun sebagai bentuk atraksi pariwisata bahari belum banyak dilakukan. Penelitian ini bertujuan untuk mengidentifikasi potensi sumber daya ekosistem lamundi Dusun Poton Bako, Jerowaru, Lombok Timur. Selanjutnya, dalam penelitian ini dilakukan penilaian kesesuaian untuk kegiatan pariwisata dan merekomendasikan jenis bentuk wisata berdasarkan potensi sumber daya ekosistem lamun tersebut. Penelitian ini menggunakan metode eksploratif dan deskriptif dengan menggunakan pendekatan kuantitatif. Metode garis transek digunakan untuk penilaian lamun, beserta analisis biota dan sedimen pada titik 0, 50, dan 100 pada setiap garis transek. Hasil penelitian menunjukkan tutupan lamun berkisar antara 20,74% hingga 43,75%. Lima jenis lamun yang berbeda dan 25 spesies biota asosiasi dari kelas gastropoda ditemukan dalam penelitian ini. Arus laut berkisar antara 2,8 hingga 5,6 cm/s, kedalaman air bervariasi antara 30 cm hingga 1,5 m, dan Tingkat kecerahan air 100%. Substrat terdiri dari lumpur berpasir dan pasir berlumpur. Indeks kesesuaian wisata (IKW) mencapai 66%, menunjukkan kondisi yang "sesuai". Berdasarkan temuan tersebut, bentuk kegiatan wisata yang cocok untuk dilakukan di ekosistem padang lamun Dusun Poton Bako yaitu wisata edukasi dan wisata snorkeling.  Padang lamun merupakan ekosistem esensial yang merupakan bagian dari ekosistem pesisir, meliputi fungsi ekologis dengan keanekaragaman hayati dan nilai ekonomi yang tinggi. Di samping itu, padang lamun juga memiliki potensi sebagai atraksi pariwisata berbasis lingkungan perairan atau yang lebih dikenal sebagai ekowisata bahari. Tidak seperti dua ekosistem pesisir lainnya, yaitu ekosistem terumbu karang dan mangrove, potensi ekosistem padang lamun sebagai bentuk atraksi pariwisata bahari belum banyak dilakukan. Penelitian ini bertujuan untuk mengidentifikasi potensi sumber daya ekosistem lamundi Dusun Poton Bako, Jerowaru, Lombok Timur. Selanjutnya, dalam penelitian ini dilakukan penilaian kesesuaian untuk kegiatan pariwisata dan merekomendasikan jenis bentuk wisata berdasarkan potensi sumber daya ekosistem lamun tersebut. Penelitian ini menggunakan metode eksploratif dan deskriptif dengan menggunakan pendekatan kuantitatif. Metode garis transek digunakan untuk penilaian lamun, beserta analisis biota dan sedimen pada titik 0, 50, dan 100 pada setiap garis transek. Hasil penelitian menunjukkan tutupan lamun berkisar antara 20,74% hingga 43,75%. Lima jenis lamun yang berbeda dan 25 spesies biota asosiasi dari kelas gastropoda ditemukan dalam penelitian ini. Arus laut berkisar antara 2,8 hingga 5,6 cm/s, kedalaman air bervariasi antara 30 cm hingga 1,5 m, dan Tingkat kecerahan air 100%. Substrat terdiri dari lumpur berpasir dan pasir berlumpur. Indeks kesesuaian wisata (IKW) mencapai 66%, menunjukkan kondisi yang "sesuai". Berdasarkan temuan tersebut, bentuk kegiatan wisata yang cocok untuk dilakukan di ekosistem padang lamun Dusun Poton Bako yaitu wisata edukasi dan wisata snorkeling.

Sebaran Bakteri Coliform Sebagai Indikator Pencemaran Biologis Di Beberapa Sumber AirKecamatan Hu’u, Kabupaten Dompu

Coliform bacteria are a group of bacteria that originate from human and animal feces in large numbers, so they are often used as indicators of food and water quality. This study aims to determine the condition of the aquatic environment based on biological indicators such as the abundance of coliform bacteria in river water and wells in Hu'u sub-district, Dompu district. Data on coliform bacteria and water quality were sourced from PT STM based on the survey results of PT Intertek and PT Sucofindo in several rivers and wells in 2021. The results of data analysis show that most rivers have coliform bacteria density values exceeding the quality standards set by the Ministry of Environment and Ministry of Health. This is probably because many residents and cattle still dispose of their feces in the river

Community Structure and Health Conditions of Mangrove in Sabu Raijua

Mangrove ecosystem has an important role for the coastal ecosystem in Sabu Raijua which is included in the TNP Laut Sawu conservation area. Its designation as a water conservation area indicates that the area is an important for the protection of fishery diversity and other marine resources. Mangroves play an important role for the diversity of marine biota because of their role as a breeding ground, foraging, and nursery ground for various types of marine biota. For this reason, the role of mangrove ecosystems as supporting conservation areas is very important. The functioning of the mangrove ecosystem can be seen based on the community structure and ecosystem quality conditions. This study aims to determine the condition of the community structure and health conditions of mangroves on Sabu Raijua Island. The survey location was obtained at 5 observation stations spread across Sabu Island. The results showed that 8 species of mangrove were identified with the dominance of Mangrove Lumnitzera racemosa with an IVI value of 191%. The percentage of canopy cover found ranged from 33 – 58% with an average value of 46%. Density ranges from 23 – 45 ind/plot, with an average of 31 ind/plot. The Mangrove Health Index (MHI) value in was 36.51 ± 14.05% which is included in the Moderate category. The high value of the standard deviation (14.05) indicates that there are still mangrove locations in Sabu Raijua that have poor conditions (Poor)

Neither Coral- nor Symbiont- Genetic Diversity may Explain the Resistance of the Coral Echinopora lamellosa to Bleaching

Genetic diversity has an important role in the stability of coral populations in coping with disturbances. In the last three bleaching events, the coral Echinopora lamellosa survived better in the eastern- than the western- Lombok waters that are not related to algal symbiont diversity. The present study aimed to assess the genetic diversity of E. lamellosa from the two locations in the Lombok waters. The ITS1-5.8S-ITS2 (whole ITS region) marker was used to identify and to determine the genetic structure, genetic variation, and demographic pattern of E. lamellosa. The results showed that E. lamellosa of the two locations are two different populations. The haplotype diversity was very high indicating a predominance of sexual reproduction mode for both eastern and western populations. The phylogenetic topology suggests there is possible connectivity between populations, whereas the haplotype network exhibits a restricted gene flow between the two populations.  The results suggest that the present E. lamellosa populations were from both surviving colonies and new recruitment of long-distance larvae. Both population likely shares the same larvae supply brought from source-reefs in the Flores Sea or Makassar Strait by the Indonesian Throughflow. The present and previous studies revealed that genetic diversity alone yet to explain the resistance of E. lamellosa in eastern and western Lombok waters.