1,720,974 research outputs found
Efektivitas Pemanfaatan Rumpon Sebagai Alat Bantu Penangkapan Ikan pada Nelayan Lokal di Kelurahan Hamadi Kota Jayapura
Full text linkRumpon (Fishing Aggregating Devices/FADs) are fishing aids to lure fish to gather in an area. The use of FADs by Hamadi fishermen in Jayapura City is carried out by individual local fishermen with hand line fishing gear. This study aims to: 1) Know the composition of the catch (type and number of fish) on FADs, 2) Compare the effectiveness of FADs and fishing gear. This study used Qualitative and Quantitative Methods, data collection techniques consisted of a) Observation, b) Interview and c) Documentation study, analysis and to determine the composition of the catch, the effectiveness of FADs and the effectiveness of fishing gear. The results showed that the composition of the catch on FADs consisted of 19 species with 1,037 individuals per species, the highest species composition was found in Selar boops, which was 17.65% (183 individuals) and the lowest was found in Lutjanus Buccanella, namely 1.25% (13 individuals). . The highest effectiveness of assisted FADs was on Basic FADs, namely 60.46% (627 individuals) and the lowest on surface FADs, namely 39.54% (410 individuals), while the highest effectiveness of fishing gear used artificial bait, namely 53.81% (558 individuals) and the lowest was on natural baits namely 46.19% (479 tails). The conclusion is that the dominating fish species are Selar boops, bottom FADs are more effective than surface FADs, while the more effective fishing gear is using artificial baits
Heavy Metal Contamination in Sediments and Its Potential Ecological Risks in Youtefa Bay, Papua Province, Indonesia
No full textThis study aimed to analyze the heavy metal contamination in sediments and their potential ecological risks. The sediment samples were collected using PVC pipes and grab samplers at nine study sites in Youtefa Bay, namely five sites in the mangrove ecosystem, two sites in the estuary, and two sites in the middle of the bay. The heavy metal content was analyzed using Atomic Absorption Spectrophotometry. The results of the analysis of the heavy metal content in the sediment were in the following order: Zn > Cu > Pb > Ni > Cr > Cd > As > Hg (106.077±98.857, 28.553±30.505, 19.798±11.541, 17.665±11.457, 12.103±0.124, 2.996±1.235, 0.149±0.124, and 0.082±0.047 mg kg-1, respectively). Only the Cd content has exceeded the Threshold Effect Level (TEL) at all study sites. On the other hand, the As and Cr content has not exceeded TEL at any study site. The content of Hg, Cr, Pb, Zn, and Ni has exceeded TEL only at a few study sites. The heavy metal content in estuary sites is higher than in mid-bay and mangrove sites, which can provide the information on the sources of heavy metal contaminants. There is a significant correlation for the content of Cu, As, Pb, Cd, Zn, and Ni which can indicate that the sources of these heavy metals are relatively the same (r = 0.569 to r = 0.950). The CF and Igeo values indicate that there has been contamination of several heavy metals studied. Further analysis ( ERI ) showed that the heavy metal content in the sediments poses a potentially serious ecological risk. Most of the potential ecological risks are the contribution of Cd and Hg which have high toxicity factors and this should receive special attention from local governments and stakeholders to prevent higher contamination
Morfometrik Kerang Polymesoda erosa di Perairan Teluk Youtefa Jayapura Papua
Full text linkPerairan Teluk Youtefa berada di Kota Jayapura dan memiliki potensi sumberdaya alam yang menjanjikan. Salah satu sumber daya alam adalah kerang Polymesoda erosa. Habitat hidup kerang ini di sela-sela akar mangrove pada substrat lumpur, lumpur berpasir dan serasah mangrove. Akibat pengumpulan kerang yang tidak terkontrol oleh nelayan, menyebabkan jumlah kerang P. erosa di perairan Teluk Youtefa semakin menurun atau habis dari habitat hidupnya. Tujuan penelitian ini adalah mengetahui hubungan antara panjang cangkang, lebar cangkang dan faktor kondisi. Sampel kerang dikumpulkan dari tiga stasiun penelitian dengan jumlah sampel 113 individu. Hubungan morfometrik dianalisis menggunakan regresi linear dengan parameter frekuensi panjang kelas, dimensi cangkang dan faktor kondisi kerang. Hasil penelitian menunjukan frekuensi panjang kelas tertinggi berada pada ukuran 50,56 mm – 56,56 mm. Hubungan morfometrik panjang berat cangkang berkorelasi kuat positif dengan pola pertumbuhan alometrik negatif, isometrik dan alometrik positif untuk tiap stasiun. Faktor kondisi di stasiun satu adalah hubungan kuat atau besar dengan ukuran kerang P. erosa pipih, sementara stasiun dua dan tiga berukuran kecil atau kerang kurang pipih.Kata Kunci: Morfometrik; Faktor kondisi; Polymesoda erosa; Teluk Youtefa
PENGUATAN MATERI LINGKUNGAN HIDUP DAN PENGOLAHAN SAMPAH ORGANIK DI SMA YAPIS NIMBOKRANG, JAYAPURA
Full text linkThe aims of this activity were to empower local community to turn organic waste into eco-enzyme. The community was SMA Yapis Nimbokrang, Jayapura. The method use were presentation and practice. After practicing, the student of SMA Yapis were tested to evaluate their understanding regarding eco-enzyme. The result shown that their understanding rose from 32% to 98.4 %. The knowledge regarding compos, adn biogas rose to 100% and 44% respectively. For eco-enzyme, student knowledge rose to 85% from 14 %. Therefore, we can conclude that this activity has positive impact in raising people knowledge and awarness in terms of processing organic waste sustainably. Keywords: local community; eco-enzyme; compos; Nimbokrang; JayapuraÂ
PENINGKATAN KEMAMPUAN LITERASI PEMUDA ELELIM DI DISTRIK ELELIM KABUPATEN YALIMO PAPUA
Full text linkLiteracy programs in the form of community service in Elelim Village can be a means to develop the knowledge and potential of local local communities so that they have broad understanding, literacy skills and adequate competence. The community can explore and empower all potentials of the region to the maximum to support the progress of the community and the region. Literacy programs in the local community in Elelim Village can also develop the values of local wisdom that are part of people\u27s lives. The youth or youth community has a role in the development of the nation\u27s future and the dynamics of youth in the journey of national life determine the future direction of the Indonesian nation. The aim of community service literacy program is to increase the literacy ability of Elelim youth in Elelim Village, Yalimo Regency, Papua. The method used is a lecture method that approaches the local cultural character or adapts according to the culture of the local community. And the accompanying educational method by providing examples or symbols to improve literacy skills with any objects, plants or animals in the local area. So that its to improve youth literacy skills in the Elelim Village. The results of community service can be concluded that the motivation and enthusiasm of the Elelim young generation\u27s willingness in studying literacy can improve the literacy ability of Elelim youth in Elelim District, Yalimo Regency, Papua. Keywords: Literacy programs service, Youth Elelim Village, Regency Yalimo, Papu
Analisis Tingkat Kesesuaian dan Daya Dukung Kawasan Wisata Pantai Osapan, Distrik Demta, Kabupaten Jayapura
Full text linkOsapan Beach is a beach tourism object located in Demta District, Jayapura Regency, which is currently still in the early stages of development to become a tourist spot. However, the existence of Osapan Beach is not widely known by the people in the City and Regency of Jayapura. Until now, there is no data or results of scientific studies that can be used as a reference for the development and management of Osapan Beach in the future. This study aims to determine the level of suitability of the area and carrying capacity and to find out how the perception of the community and tourists in the development of Osapan Beach as an eco-tourism location. This research was conducted from January to June 2021. The methods used in this study include the observation method (observation and direct collection of tourism suitability parameter data), interviews with respondents (asking several questions using questionnaires to 35 respondents and documentation (recording data, taking research drawings/photos). The results showed that the tourism suitability index (IKW) for all ecotourism suitability parameters at Osapan Beach, station 1 and station 2 had the same value, namely 89.28% (Highly Appropriate/S1), station 3 had a value of 95.23% (Very Appropriate/S1) and station 4 has a score of 82.14% (Suitable/S2). The carrying capacity of Osapan Beach as an ecotourism location is 21 people/day. Most of the respondents think that Osapan Beach deserves to be used as an ecotourism area where Osapan Beach has an attraction and has the potential to support the economy of the Yakore Village community. The main thing that needs to be considered in the construction of facilities to support tourism activities.Key Words:Â Ecotourism;Â Suitability;Â Carrying Capacity;Â Osapan Beach;Â Demta Distric
Efforts to Increase Local Community Income Through Seaweed Cultivation in Arareni Village Yapen Islands Regency
No full textPapua has various kinds of potential marine natural resource wealth, both biological and non-biological natural wealth. The potential of these natural resources should be utilized to improve the community's economy. Utilization of the potential of marine resources is still far from expectations. One of the potential marine resources is seaweed. Seaweed has export potential, and its economic value is met from cultivation activities. The aim of this community partnership empowerment (PKM) activity is to increase the knowledge of small-scale seaweed farmers and implement pre-harvest seaweed cultivation practices in Arareni Village, Yapen Islands Regency. The approach used is the delivery of material through socialization related to cultivation practices, starting from the land preparation process, seeding, maintenance, calculating harvest time and yields, as well as group management. During the socialization there were also questions and answers and discussions. The success of the activity is evaluated through a pre-post test. The results show that the highest increase in knowledge was achieved in the cultivation process material (pre-test 47% and post-test 61%). Seaweed farmers know that the seed production age is 25-30 days, harvest after 30-45 days, seed weight 50-100 grams, maintenance takes 25-30 days, distance between ropes 100-200 cm, seeds must be 20-50 cm apart below the water surface and the yield size is 250 g/rope
POLA PERTUMBUHAN, RESPON OSMOTIK DAN TINGKAT KEMATANGAN GONAD KERANG Polymesoda erosa DI PERAIRAN TELUK YOUTEFA JAYAPURA PAPUA
Full text linkKerang Polymesoda erosa (nama lokal kerang kodok) termasuk kelas bivalve yang banyak
ditemukan di perairan Teluk Youtefa Jayapura. Kerang ini hidup di daerah lumpur, lumpur
berpasir dan serasah mangrove yang telah terdekomposisi menjadi lumpur. Habitat hidup
kerang Polymesoda erosa terganggu akibat aktivitas antropogenik oleh masyarakat
setempat seperti penebangan hutan mangrove, bahan pencemar, sedimentasi dan
penangkapan kerang yang tidak terkontrol. Tujuan penelitain ini adalah mengetahui pola
pertumbuhan, respon osmotik dan tingkat kematangan gonad melalui studi histologi.
Seratus tiga puluh tiga (133) sampel kerang P.erosa dikumpulkan dari tiga stasiun berbeda
selama bulan juni 2016. Hubungan morfometri panjang berat dianalisis menggunakan
analisis regresi linearitas sederhana dan korelasi. Hasil penelitian menunjukan jumlah kelas
frekuensi panjang tertinggi kerang P.erosa adalah 50,56–56,56 mm dengan kisaran ukuran
29,56-85,65 mm. Pola pertumbuhan kerang P.erosa adalah alometri positif terhadap 50
individu kerang jantan, 55 individu kerang betina dan 28 individu kerang unidentified
(UND). Respon osmotik kerang P.erosa terdiri dari dua pola yaitu hipoosmotik dan
hiperosmotik. Hasil studi histologi tingkat kematangan gonad kerang P.erosa ditemukan
tiga tingkatan yaitu TKG I, TKG II, TKG III dan gonad yang tidak dapat dibedakan jantan
atau betina (unidentified)
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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