bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ekologi Rumput Laut di Perairan Tanjung Pudak Kepulauan Karimunjawa, Jawa Tengah
Authors: Khudin Miftah , Santosa Gunawan Widi , Riniatsih Ita 
Published: July 2021

Penelitian mengenai struktur komunitas rumput laut ini dilakukan di Perairan Tanjung Pudak Pulau Karimunjawa. Penelitian ini bertujuan untuk mengetahui kondisi ekologi rumput dan struktur komunitas di Perairan Tanjung Pudak Pulau Karimunjawa. Pengumpulan data dilakukan bulan Mei 2016 pada lima stasiun menggunakan transek kuadran ukuran 50x50cm dengan interval antar stasiun 25 meter. Hasil penelitian menunjukkan bahwa selama penelitian ditemukan 7 spesies yang terbagi atas 2 divisi. Chlorophyta (3 spesies) dan Phaeophyta (4 spesies). Nilai keanekaragaman yang ditemukan berkisar antara rendah hingga sedang. Nilai keseragaman yang ditemukan berkisar sedang hingga tinggi, sedangkan nilai dominansi yang ditemukan berkisar rendah hingga sedang. Faktor yang mempengaruhi persebaran rumput laut adalah cahaya, suhu, salinitas dan jenis substrat. Kondisi komunitas rumput laut di perairan Tanjung Pudak, Pulau Karimunjawa masih tergolong baik, karena semua parameter kualitas air yang telah diukur memenuhi syarat bagi pertumbuhan optimum rumput laut kecuali kandungan nitrat dan fosfat. This research was conducted in Tanjung Pudak waters, Karimunjawa Island, Central Java. The purpose of this research was to determine the ecological condition and community structure of seaweed in Tanjung Pudak waters. The data were collected on May 2016 in five stations, using the 50x50 cm-sized quadrant transect with 25 meters interval between each stations. The results showed that during the study found 7 species were divided into 2 divisions. Three species of Chlorophyta and four species of Phaeophyta. Diversity values were found in range from low to moderate. Uniformity values were found to be moderate to high, while dominance values were found in range from low to moderate. Factors that influence the distribution of seaweed are light, temperature, salinity and type of substrate. The condition of the seaweed community in the waters of Tanjung Pudak, Karimunjawa Island is still relatively good, because all measured water quality parameters qualify for optimum growth of seaweed except the content of nitrate and phosphate.
Hubungan Pengendapan Suspended Sedimen dengan Kerapatan Mangrove pada Perairan Romokalisari, Surabaya
Authors: Arifin Muhammad Yusuf , Soenardjo Nirwani , Suryono Chrisna Adhi 
Published: July 2021

ABSTRAK: Romokalisari merupakan bagian hilir dari sungai Lamong, dimana daerah tersebut merupakan daerah pasang surut dan rawan terhadap banjir. Romokalisari banyak ditumbuhi oleh mangrove yang sangat rapat. Tujuan penelitian ini adalah untuk mengetahui pengaruh kerapatan mangrove terhadap laju pengendapan suspended sedimen pada perairan Romokalisari, Surabaya. Sampel sedimen diambil dari 8 stasiun yang terbagi dalam wilayah muara, mangrove dan laut, dimana masing-masing stasiun diulang 4 kali dengan periode setiap minggu. Analisis sampel sedimen menggunakan metode hydrometer dan analisis data menggunakan One Way Anova. Hasil penelitian menunjukkan bahwa ada perbedaan laju pengendapan suspended sedimen antara muara, mangrove dan laut, dengan nilai p = 0,046 < 0,05. Laju pengendapan suspended tertinggi terdapat pada stasiun 1 di wilayah muara dengan nilai sebesar 86,97 g/cm2/minggu dan laju pengendapan suspended terendah terdapat pada stasiun 2 di wilayah mangrove dengan nilai sebesar14,36g/cm2/minggu. ABSTRACT: Romokalisari is downstream part of the Lamong River, where the area is tidal and prone to flooding. Romokalisari is overgrown by very dense mangroves. The aim of this study was to determine the effect of mangrove density on suspended sediment rate in Romokalisari, Surabaya. Sediment sample were taken from 8 statios divided into estuaries, mangroves, and sea areas, each station was repeated 4 times with periods each week. Analysis of sediment samples using a hydrometer and data analysis using One Way Anova. The results showed that there were differences in suspended sedimentation rates between estuaries, mangroves and seas, with a value of p = 0,046 < 0,05. The highest suspended deposition rate is at station 1 in the estuary area with a value of 86.97 g/cm2/week and the lowest suspended deposition rate is at station 2 in the mangrove area with a value of 14.36 g/cm2/week.
Simpanan Karbon pada Ekosistem Padang Lamun di Perairan Jepara
Authors: Sophianto Raka Pramulo , Endrawati Hadi , Hartati Retno 
Published: July 2021

Padang lamun merupakan ekosistem yang kompleks dan produktif di ekosistem laut dan pesisir serta salah satu peran utama lamun adalah sebagai penyimpan karbon dengan karakteristik uniknya. Penelitian ini bertujuan untuk mengetahui jenis-jenis lamun, mengetahui struktur komunitas lamun, nilai biomassa dan nilai karbon lamun. Penelitian ini dilakukan pada bulan Oktober dan November 2017 di Teluk Awur dan Pantai Bendengan Jepara. Metode yang digunakan dalam penelitian ini adalah metode deskriptif. Pengambilan sampel dilakukan pada dua tempat masing-masing lima stasiun. Sampel yang diambil adalah lamun, sedimen dan air laut yang ditemukan di lokasi penelitian yang kemudian di identifikasi serta dianalisis di Laboratorium Biologi, Departemen Ilmu Kelautan, dan analisis pengabuan lamun dilakukan pada di Laboratorium Geologi, Departemen Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Hasil penelitian ini menunjukkan nilai total biomassa lamun yang didapat di kedua lokasi dari sampling pertama yaitu 982,77 gbk/m2 dan sampling kedua yaitu 923,91 gbk/m2. Total kandungan karbon pada sampling pertama berkisar antara 511,76 – 3662,26 gC/m2 dan total karbon pada sampling kedua berkisar antara 141,48 – 3344,2 gC/m2. Perbedaan hasil yang di dapat menunjukkan bahwa perbedaan iklim dapat berpengaruh terhadap hasil yang didapatkan. Seagrass beds are complex and productive ecosystems in marine and coastal ecosystems and one of the main roles of seagrasses is storing carbon with its unique characteristics. This study aims to determine the types of seagrasses, find out the seagrass community structure, biomass values and seagrass carbon values. This research was conducted in October and November 2017 in Teluk Awur and Bendengan Jepara Beach. The method used in this research is descriptive method. Sampling was carried out at two places each of five stations. Samples taken were seagrass, sediments and seawater found at the study site which were then identified and analyzed in the Biology Laboratory, Department of Marine Sciences, and analysis of desertion carried out at the Geology Laboratory, Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Diponegoro University. The results of this study indicate the total value of seagrass biomass obtained in both locations from the first test was 982.77 gbk/m2 and the second test was 923.91 gbk/m2. The total carbon content in the first sampling ranged from 511.76 - 3662.26 gC/m2 and the total carbon in the second sampling ranged from 141.48-3344.2 gC/m2. The difference in results can show that climate differences can affect the results obtained.
Fluktuasi Ikan Karang di Kawasan Konservasi Laut Daerah Gili Sulat dan Gili Lawang, Lombok Timur
Authors: Adiyoga Diaz , Hartati Retno , Setyati Wilis Ari 
Published: July 2021

ABSTRAK: Keanekaragaman ekosistem pesisir dan laut yang terdapat di Gili Sulat Gili Lawang merupakan salah satu sumberdaya yang penting untuk dilindungi mengingat besarnya ketergantungan masyarakat terhadap ekosistem tersebut. Ekosistem terumbu karang adalah salah satu ekosistem penting di Gili Sulat dan Gili Lawang yang menjadikan ikan dan biota lainnya sebagai tempat tinggal maupun mencari makan. kondisi terumbu karang sangat mempengaruhi kekayaan dan kelimpahan ikan karang. Jika kondisi terumbu karang baik maka kelimpahan ikannya tinggi, begitu pula sebaliknya. Penelitian kelimpahan ikan karang dilakukan pada 14-21 November 2018 di Kawasan Konservasi Laut Daerah Gili Sulat dan Gili Lawang. Pengambilan data menggunakan metode sensus visual untuk ikan karang di kedalaman 8-10 meter dengan 3 buah transek sepanjang 50 meter sejajar dengan garis pantai. Berdasarkan hasil penelitian yang dilakukan di Kawasan Konservasi Laut Daerah Gili Sulat dan Gili Lawang kelimpahan ikan karang, rata – rata nilai kelimpahan ikan karang di zona pemanfaatan paling tinggi yaitu 621 ind/ha, paling rendah pada zona inti sebesar 615 ind/ha dan zona perikanan berkelanjutan sebesar 616 ind/ha ABSTRACT: The diversity of coastal and marine ecosystems found on Gili Sulat Gili Lawang is one of the important resources to protect given the large dependence of the community on these ecosystems. The coral reef ecosystem is one of the important ecosystems on Gili Sulat and Gili Lawang which makes fish and other biota as a place to live or find food. the condition of coral reefs greatly affects the wealth and abundance of reef fish. This research was conducted in November 14-21, 2018. Collecting data of reef fishes abundance using visual census method in 8-10 meter depth, use 3 pieces line transect with 50 meters long an roll out the transect along the shoreline. Based on the results of research conducted in Gili Sulat and Gili Lawang the Marine Protected Area reef fish abundance, the average abundance of reef fish in the utilization zone is highest at 621 ind / ha, the lowest in the core zone is 615 ind / ha and the fishing zone sustainable of 616 ind / ha
Pengaruh Salinitas terhadap Pertumbuhan dan Aktivitas Antioksidan Dunaliella salina (Chlorophyceae: Dunaliellaceae)
Authors: Setiasih Intan Budi , Sabdono Agus , Pramesti Rini 
Published: July 2021

ABSTRAK: Dunaliella salina merupakan salah satu jenis mikroalgae hijau yang mengandung berbagai senyawa bioaktif termasuk senyawa antioksidan untuk melawan radikal bebas. Pertumbuhan mikroalgae dipengaruhi oleh lingkungan salah satunya adalah salinitas. Penelitian ini bertujuan mengetahui salinitas optimal untuk pertumbuhan dan aktivitas antioksidan D. salina berdasarkan nilai persen inhibisi. Penelitian ini dilaksanakan di Laboratorium Terpadu dan Laboratorium Biologi Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Semarang pada bulan Mei - Juli 2018. Metode penelitian yang digunakan adalah eksperimental laboratoris. D. salina dikultur pada lima salinitas yang berbeda yaitu 20, 25, 30, 35 dan 40 ppt. Pengamatan dilakukan selama 7x24 jam, dipanen dan diekstrak dengan pelarut etanol yang selanjutnya dianalisis aktivitas antioksidannya dengan metode 1,1-difenil-2-pikrilhidrazil (DPPH). Hasil penelitian menunjukkan pertumbuhan optimal terjadi pada salinitas 30 ppt, dan aktivitas antioksidan tertinggi dicapai pada salinitas 20 ppt (9,88±0,59) yang termasuk dalam kategori lemah.ABSTRACT: D. salina is a type of green microalgae that contains various bioactive compounds including antioxidant compounds to fight free radicals. Microalgal growth is influenced by the environmental conditions such as salinity. This study aims were to determine the optimal salinity of growth and antioxidant activity in ethanol extract based on percent inhibition values. This research was conducted in the Integrated Laboratory and Biology Laboratory of the Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang in May - July 2018.The research method used was an experimental laboratory. D. salina was cultivated with five different salinities on 20, 25, 30, 35 and 40 o/oo. Observation was carried out for 7x24 hours, harvested and extracted with ethanol solvent and then analyzed its antioxidant activity by 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. The results showed that optimal growth of D. salina was 30 o/oo in salinity, and the highest antioxidant activity was 20 o/oo in salinity (9.88 ± 0.59) and included in the weak category.
Eksplorasi Bakteri Pendegradasi Minyak dari Perairan Pelabuhan Tanjung Mas, Semarang
Authors: Puspitasari Ita , Trianto Agus , Supriyanto Jusup 
Published: July 2021

ABSTRAK: Tanjung Mas merupakan salah satu kawasan pelabuhan di Jawa Tengah yang terus mengalami peningkatan jumlah kapal setiap tahunnya. Hal ini berimbas pada semakin meningkatnya tumpahan minyak solar yang masuk ke perairan. Upaya yang bisa dilakukan untuk mengurangi jumlah tumpahan minyak solar di Pelabuhan Tanjung Mas yaitu dengan melakukan penelitian bioremediasi menggunakan bakteri indigenouse. Tujuan penelitian ini dilakukan yaitu mendapatkan isolat bakteri air laut asal Pelabuhan Tanjung Mas, Semarang yang mampu mendegradasi minyak solar dan mengetahui kemampuan masing-masing isolat untuk mendegradasi minyak solar. Penelitian ini dilaksanakan pada bulan Juli sampai Oktober 2019 dengan pengambilan sample air laut menggunakan metode purpossive sampling, metode isolasi menggunakan pour plate, metode uji minyak secara gravimetri dan pertumbuhan bakteri menggunakan Standart Plate Count (SPC). Hasil isolasi yaitu didapatkan 2 isolat unggul yaitu bakteri Alcanivorax nanhaiticus dan Halomonas meridiana. Bakteri Alcanivorax nanhaiticus mampu mendegradasi 54% minyak solar dan Halomonas meridiana mampu mendegradasi 72% minyak solar. Kedua bakteri merupakan bakteri hidrokarbonoklastik atau bakteri yang memiliki kemampuan mendegradasi minyak solar (hidrokarbon) karena mengandung enzim monooksigenase. Dari penelitian ini dapat disimpulkan bahwa di Pelabuhan Tanjung Mas terdapat bakteri yang mampu mendegradasi minyak solar yaitu Alcanivorax nanhaiticus dan Halomonas meridiana. Kedua isolat mampu mendegradasi lebih dari 50% minyak solar yang diujikan. ABSTRACT: Tanjung Mas is one of the port areas in Central Java that continues to experience an increase in the number of ships each year. This has an impact on the increasing amount of diesel fuel spills that enter the waters. Efforts that can be made to reduce the number of diesel fuel spills in the Port of Tanjung Mas is to conduct bioremediation research using indigenous bacteria. The purpose of this study was to obtain seawater bacterial isolates from the Port of Tanjung Mas, Semarang that can degrade diesel fuel and determine the ability of each isolate to degrade diesel fuel. This research was conducted in July to October 2019 by taking seawater samples using a purposive sampling method, isolation method using pour plates, gravimetric fuel test methods and bacterial growth using Standard Plate Count (SPC). The results of the isolation were obtained 2 superior isolates namely Alcanivorax nanhaiticus and Halomonas meridiana. Alcanivorax nanhaiticus can degrade 54% of diesel fuel and Halomonas meridiana can degrade 72% of diesel fuel. Both bacteria are hydrocarbonoclastic bacteria or bacteria that can degrade diesel oil (hydrocarbons) because they contain the enzyme monooxsigenase. From this study, it can be concluded that at Tanjung Mas Port there are bacteria that can degrade diesel fuel, namely Alcanivorax nanhaiticus and Halomonas meridiana. Both isolates were able to degrade more than 50% of the tested diesel fuel.
Kandungan Klorofil Cymodocea serrulata Pada Kedalaman Berbeda di Perairan Pulau Panjang Jepara
Authors: Kusuma Almira Nadia , Suryono Chrisna Adhi , Riniatsih Ita 
Published: July 2021

Klorofil merupakan faktor utama yang mempengaruhi fotosintesis. Cymodocea serrulata membutuhkan intensitas cahaya yang cukup tinggi untuk melaksanakan proses fotosintesis. Perbedaan intensitas cahaya terhadap lamun tersebut diduga akan mempengaruhi pembentukan klorofil, sehingga penelitian ini dilakukan untuk mengetahui pengaruh perbedaan kedalaman perairan terhadap kandungan klorofil C. serrulata. Penelitian ini menggunakan metode spektrofotometri untuk mengetahui absorbansi pigmen klorofil daun lamun C. Serrulata. Analisis statistika digunakan untuk mendeskripsikan pengaruh kecerahan perairan dan stasiun lokasi terhadap kandungan klorofil lamun C.serrulata. Berdasarkan hasil penelitian, kandungan klorofil tertinggi terdapat di kedalaman 1 meter yaitu sebesar 3,061 µg/l, sedangkan kandungan klorofil terendah terdapat di kedalaman 3 meter yaitu sebesar 1,509 µg/l. Kandungan klorofil menurun seiring dengan bertambahnya kedalaman, yang dipengaruhi oleh kecerahan perairan dan kadar TSS yang dapat menghambat penetrasi cahaya yang menembus perairan. Chlorophyll is the main factor that affects photosynthesis. Cymodocea serrulata requires a high intensity of the light to carry out the process of photosynthesis. In this case, the differences in light intensity will affect the formation of chlorophyll in seagrass leaves. This study aims to determine the effect of different depths on the chlorophyll content of C. serrulata. Therefore, this study used a spectrophotometric method to determine the absorbance of chlorophyll pigment in C. serrulata. Statistical analysis used to describe the water transparency and sampling station on chlorophyll content. Based on the study results, the highest chlorophyll content has found in 1 meter depth of the sea, which is equal to 3,061 µg/l and the lowest chlorophyll content in 3 meter depth of the sea equal to 1,509 µg/l. It can be concluded that the chlorophyll content decreased while the increasing of the depth due to the water transparency and TSS levels, which can inhibit the penetration of light through the water.
Komposisi dan Tutupan Kanopi Vegetasi Mangrove di Perairan Bakauheni, Kabupaten Lampung Selatan
Authors: Kuncahyo Ilham , Pribadi Rudhi , Pratikto Ibnu 
Published: July 2021

Kondisi kesehatan vegetasi mangrove yang berada di daratan dan pulau – pulau kecil sangat penting dalam menjaga keseimbangan ekosistem pesisir dan laut. Perbedaan kondisi tumbuh mangrove dapat mempengaruhi dinamika perubahan vegetasi dan tutupan kanopi mangrove. Penelitian ini bertujuan untuk menganalisis struktur, komposisi dan tutupan kanopi mangrove di Perairan Bakauheni, Kabupaten Lampung Selatan. Metode yang digunakan dalam penelitian ini yaitu metode deskriptif. Penentuan titik atau stasiun sampling dengan menggunakan metode purposive sampling. Metode pengambilan data vegetasi mangrove dengan metode plot sampling dan pengambilan data tutupan kanopi mangrove dengan metode hemispherical photography. Penelitian ini dilakukan di 4 lokasi yaitu Desa Kramat (DK), Desa Muara Bakau (DMB), Pulau Rimau Balak (PRB), dan Pulau Kandang Balak (PKB) yang terdiri dari 4 stasiun penelitian. Hasil penelitian menunjukkan bahwa kawasan Perairan Bakauheni yang terdiri dari 4 lokasi peneltiian ditemukan 14 spesies mangrove di dalam plot dan di luar plot penelitian. Nilai Kerapatan mangrove berkisar 966–1634 ind/ha. Nilai Indeks Keanekaragaman (H’) dan Keseragaman (J’) di lokasi penelitian termasuk dalam kategori rendah. Hasil persentase tutupan kanopi mangrove termasuk kategori padat berkisar 72,04±13,18% – 86,41±1,08%. The health condition of mangrove vegetation on land and small islands is very important in maintaining the balance of coastal and marine ecosystems. Differences in mangrove area conditions can affect the dynamics of changes in vegetation and mangrove canopy cover. This study aims to analyze the structure, composition and cover of mangrove canopies in Bakauheni Waters, South Lampung Regency. The method used in this research is descriptive method. Determination of the point or sampling station using purposive sampling method. The method of collecting mangrove vegetation data using plot sampling method and mangrove canopy cover data collection using hemispherical photography method. This research was conducted in 4 locations, namely Kramat Village (DK), Muara Bakau Village (DMB), Rimau Balak Island (PRB), and Kandang Balak Island (PKB) consisting of 4 research stations. The results showed that the Bakauheni Waters area which consisted of 4 research sites found 14 mangrove species inside the plot and outside the research plot. Mangrove density values range from 966-1634 ind/ha. The value of Diversity Index (H') and Uniformity (J') in the study location is included in the low category. The percentage yield of mangrove canopy cover including the dense category ranges 72.04±13.18% - 86.41±1.08%.
Response of hemp (Cannabis sativa L.) to integrated application of chemical and manure fertilizers
Authors: LALEH Samaneh , JAMI AL-AHMADI Majid , PARSA Soheil 
Published: July 2021

<p>The investigation of various nutrition systems in hemp plays an influential role in improving its production. An experiment was conducted in University of Birjand, Iran, during 2013-2014, in which manure (0, 10, 20, and 30 t.ha-1 of cow manure) was considered as the main plot and the combination of nitrogen (0, 50, and 100 kg N ha-1 as urea) with phosphorus (0 and 80 kg P ha-1 as triple superphosphate) fertilizers was considered as factorial in subplots. The type of soil fertility management had no significant effect on the percentage of female plants. Applying 20 t.ha-1 of manure plus 100 kg N ha-1 produced the highest biological yield, seed, and leaf extract. The highest oil content was obtained by applying a maximum of 50 kg N ha-1 without the use of phosphorus. The 30 t ha-1 manure plus 100 kg N ha-1 increased the leaf harvest index and decreased seed harvest index. Nitrogen consumption also increased the seed oil content and yield. Phosphorus increased the biomass and extracts of seed and leaves, also biological, seeds and oil yield. It seems hemp responds well to the combined application of nitrogen fertilizer and animal manure, while its response to P fertilization was limited. </p>
Logical and practical advantages of double consciousness
Authors: West Donna E. 
Published: July 2021

Abstract
This account augments Peirce's concept of consciousness in two ways: 1) it highlights its double nature and 2) it explores how this two-sided consciousness advances modal logic. Double consciousness facilitates inferencing in that differences between old information and new information are noticed; logical conflicts between the two can then be explored and resolved expeditiously. This often natural but a forced need to consider new facts in light of old ones provides a scaffold for a higher level of consciousness, namely, self and heterocriticism — inciting interpreters to attend to the new facts, to intentionally compare facts and propositions, and to reflect upon the reasons for their comparative efficacy. In his call to double consciousness, Peirce enlivens us to draw deeply from the well of logical and practical affordances — surprising events and sustained interactive platforms. Peirce’s call requires us to utilize consciousness from its very basic level: attention to stimuli, awareness of unexpected facts, mental wrestling of effort and resistance, and finally synthetic consciousness which engenders binding frames of legitimate meanings from reliable genres. In this effort, Peirce informs us that the most reliable inferencing can only be ascertained by weighing ego with non-ego — through an active course of careful synthesis.
Incivility among Arabic-speaking nursing faculty: testing the psychometric properties of the Arabic version of incivility in nursing education-revised
Authors: Al-Jubouri Mohammed Baqer , AL-Fayyadh Sadeq , Jaafar Sabah Abdullah , Alabdulaziz Hawa , Nashwan Abdulqadir J. , Jahlan Ibtesam Omar , Shaban Mostafa 
Published: July 2021

Abstract

Objectives
Civil environment in nursing education enhances achieving learning outcomes. Addressing incivility can be crucial to improve academic achievements. The purpose of this study was examining the psychometric properties of the Arabic version of the Incivility in Nursing Education-Revised scale regarding nursing faculty.

Methods
This cross-sectional study conducted in five Arab countries using a convenience sampling strategy. Two hundred twenty-five Arab-speaking nursing faculty participated in this study.

Results
Exploratory factor analysis confirmed the construct validity of the translated Arabic version of the Incivility in Nursing Education-Revised that are related to nursing faculty. Internal consistency was assessed using Cronbach’s alpha and a coefficient of 0.867 indicated strong scale reliability.

Conclusion
The Arabic version of the Incivility in Nursing Education-Revised scale that is related to nursing faculty is a valid and reliable tool that can be used to evaluate incivility among Arab-speaking nursing faculty.