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<![CDATA[The Growth Response of Kale Land (Ipomoea reptans Poir) to the Aplications of Vermicompost and NPK Fertilizer ]]>
<![CDATA[Ahmad Raksun]]>;
<![CDATA[Mohammad Liwa Ilhamdi]]>;
<![CDATA[I Wayan Merta]]>;
<![CDATA[I Gde Mertha]]>
<![CDATA[ Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June ]]>
Publisher : <![CDATA[Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia ]]>
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DOI: 10.29303/jbt.v22i2.3447
<![CDATA[Kale land is a short-lived plant, containing the nutrients needed by the human body. The growth of kale land is influenced by various factors, one of which is the adequate supply of nutrients needed by plants. Fertilization is one of the efforts that can be done to ensure the availability of nutrients on agricultural land. Research has been carried out on the growth response of kale land due to the application of vermicompost and NPK fertilizers. The purpose of this research is to obtain information about (1) increased growth of kale land due to the application of vermicompost, (2) increased growth of kale land due to application of NPK fertilizer, (3) increased growth of kale land due to the interaction of vermicompost and NPK fertilizer treatments. The research was carried out using an experimental method in the form of factorial arranged according to a completely randomized design. The first factor is vermicompost (C) with doses of 0 kg, 0.4 kg, 0.8 kg, 1.2 kg and 1.6 kg vermicompost per square meter of agricultural land. The second factor is the application of NPK fertilizer (P) at a dose of 0 g, 0.5 g, 1 g, 1.5 g per plant. Thus there were 20 treatment combinations and each combination was carried out with 3 replications. The growth parameters observed were plant height, total leaf, leaf length, leaf width and stem diameter of land kale. Research data were analyzed by Anova. The conclusions of the study were: (1) The application of vermicompost could increase plant height, number of leaves, leaf length and leaf width but could not increase stem diameter of kale land (2) application of NPK fertilizer can improve all growth parameters of kale land kangkong. (3) The interaction of vermicompost and NPK fertilizer cannot increase the growth of kale land.]]>
<![CDATA[Adaptation of Community of Seaweed Cultivation in Disease Attacks and Climate Change in Seriwe Village Jerowaru District ]]>
<![CDATA[Suparmin Suparmin]]>
<![CDATA[ Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June ]]>
Publisher : <![CDATA[Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia ]]>
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DOI: 10.29303/jbt.v22i2.3481
<![CDATA[Adjustment to the external environment in carrying out all activities as a result of climate change is a must for every individual, including fishermen in Seriwe village. This study aims: first, to analyze the adaptation of fishermen in the face of climate change and attacks of seaweed disease. Second, analyze the use of leisure time, income, and household expenses of fishermen. The method used in this research is descriptive method with survey technique. The conclusion in this study is that fishing households can adapt to climate change by resting, not going to sea and filling with other activities. If there is an attack of ice-ice disease, fishermen only secure seaweed that is still good. The time used by fishermen for seaweed cultivation increases the working time in a year, which is 90 hours. Fishermen's household income comes from fishing, trading, labor, and seaweed cultivation. Fishermen household expenditures are dominated by food consumption needs.]]>
<![CDATA[Growth and Content of Seaweed Carrageenan Kappaphycus alvarezii Cultivated at Bottom-off method ]]>
<![CDATA[Devi Suryani Putri]]>;
<![CDATA[Nunik Cokrowati]]>;
<![CDATA[Dewi Putri Lestari]]>;
<![CDATA[Ahmad Ahmad]]>
<![CDATA[ Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June ]]>
Publisher : <![CDATA[Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia ]]>
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DOI: 10.29303/jbt.v22i2.3539
<![CDATA[Kappaphycus alvarezii is a red alga that produces kappa-carrageenan which can be used as raw material for processed foods, medicines, cosmetics, and bacterial media materials. The production of K. alvarezii is increasingly being sought to increase to meet consumer demands. This study aimed to analyse the growth rate and content of carrageenan in K. alvarezii cultivated using the bottom-off method. This research was conducted at the Seaweed Center of Balai Perikanan Budidaya Laut (BPBL), Gerupuk, Pujut District, Central Lombok Regency, West Nusa Tenggara Province. The research method used was experimental with a completely randomized design consisting of five spacing treatments. The treatments in this study were P0 (distance 15 cm as control), P1 (distance 10 cm), P2 (distance 15 cm), P3 (distance 20 cm), P4 (distance 25 cm). K. alvarezii cultivation was carried out for 40 days. The result of this study is the highest yield of carrageenan was obtained at P4 of 6.846%. The highest absolute weight of K. alvarezii was obtained in treatment P4 (25 cm) which was 121.67 g. The highest specific growth was found at P4 (25 cm) which was 1.98%/day. This study concludes that K. alvarezii spacing significantly affects the growth and carrageenan of seaweed cultivated at the bottom-off method.]]>
<![CDATA[Types and Capacity of Coral Reefs Collecting as Material For Making Lime, In Gunung Malang Village, East Lombok ]]>
<![CDATA[Dining Aidil Candri]]>;
<![CDATA[Lia Mar’atus Sholeha]]>;
<![CDATA[Hilman Ahyadi]]>;
<![CDATA[Yuliadi Zamroni]]>
<![CDATA[ Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June ]]>
Publisher : <![CDATA[Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia ]]>
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DOI: 10.29303/jbt.v22i2.3622
<![CDATA[Coral reefs ae onne of the ecosystems who have both ecological and economical function. I Gunung Malang community, coral reef have been used as main mateerial in lime powder production. The aim of this research to identified the species, distribution and capacity of coral reefs in lime powder production and than how the marketing system of the product. This research conducted from January to September 2018. The data was collected by measurement and identificatio of coral ad then interviewed the lime powder labours. The result of the research reported 29 species of coral from 17 genera and 8 families which was taken in 9 locations, six of it are live coral reef sites and the other are dae coral sites. Acropora abrolhosensis is dominant species with 605 Kg of coral mininng, followed by acropora sp with 535 kg and acropora palifera with 307 kg. The capacity of coral used inn are processig of lime powder production between 2000-3000 Kg, it will product 60-100 sacks of lime powder with 25 to 30 Kg in each sack. The lime powder in not sale directly to the consumers by the producer but it saleing to mainn collectors and then distriuted to the consumers or building stores.]]>
<![CDATA[The Effect of Tofu and Fermented Coconut Dregs on Body Weight Gain and Cocoon Production of African Worms (Eudrilus eugeniae) ]]>
<![CDATA[Rakhmatdi Rakhmatdi]]>;
<![CDATA[Dewi Puspita Sari]]>
<![CDATA[ Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June ]]>
Publisher : <![CDATA[Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia ]]>
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DOI: 10.29303/jbt.v22i2.3285
<![CDATA[Earthworms are currently in great demand for industrial and pharmaceutical needs, so it is necessary to increase the productivity of worms by breeders. This study aims to determine the effect of giving tofu pulp and coconut pulp on body weight gain and cocoon production of Eudrilus eugeniae worms. The object of this research is Eudrilus eugeniae which has been clit. This study was divided into two groups, namely control and treatment with six replications each so that there were 24th experimental units. In the control and treatment groups, the researchers included 10th Eudrilus eugeniae worms in each treatment in the form of a combination of tofu pulp and coconut pulp. Parameters observed were worm biomass and several cocoons. The data on the weight gain of the worms were analyzed using One Way Anova and then continued with the Duncan Multiple Test (DMRT) with significantly different results. Furthermore, data on the number of worm cocoons were analyzed using the Kruskal Wallis test. The results showed that the provision of tofu and coconut pulp had a significant effect on body weight gain and the production of Eudrilus eugeniae cocoons. There is an effect of giving tofu dregs and fermented coconut pulp on the increase in body mass of Eudrilus eugeniae worms as a conclusion.]]>
<![CDATA[The Diversity of Dragonflies (Odonata) in the Joben Resort Area, East Lombok ]]>
<![CDATA[Juni Kartini]]>;
<![CDATA[Syachruddin Syachruddin]]>;
<![CDATA[Mohammad Liwa Ilhamdi]]>
<![CDATA[ Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June ]]>
Publisher : <![CDATA[Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia ]]>
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DOI: 10.29303/jbt.v22i2.3458
<![CDATA[Dragonfly is a family of insects that are closely related to water. During their life cycle, especially when laying eggs and at the stage of dragonfly nymphs, they spend their lives in healthy water areas because dragonfly nymphs are very sensitive to polluted water quality. Therefore, dragonflies have an important role for the sustainability of the ecosystem, namely acting as predators and indicators of environmental pollution. The high diversity of dragonflies in an area indicates that the area is still not polluted because the environment supports the life of dragonflies. This study aims to determine the diversity of dragonflies (odonata) in the Joben Resort area of East Lombok. This research is an exploratory descriptive study conducted from November to December 2021. Data collection was carried out 4 times and was repeated within 1 month in the morning and evening (08.00-17.00 WITA). The method used is a survey method with a sweeping net technique following a 500 m research path on 3 research paths, namely lane 1 (the river that borders Joben Ecopark), lane 2 (the path leading to the Resort Office and Joben Ecopark) and lane 3 (the river that flows through Joben Ecopark). Bordered by rice fields and Kokok Joben Brain Baths). The calculation of the diversity index of dragonflies uses the Shannon-Wienner formula (H'). The results showed that the types of dragonflies (odonata) found in the Joben Resort Area consisted of 20 species with a total number of individuals found from 3 lanes as many as 864 individuals. The diversity index of dragonflies in the Joben Resort area of East Lombok is 2,309. The conclusion is that the diversity of dragonflies in the Joben Resort area of East Lombok is in the medium category.]]>
<![CDATA[Analysis of Cadmium (Cd) Heavy Metal Content in Headsnake Fish (Channa striata) Derived from Rawa Taliwang Lake, West Sumbawa Regency 2021 ]]>
<![CDATA[Karina Legiarsi]]>;
<![CDATA[Khairuddin Khairuddin]]>;
<![CDATA[M. Yamin]]>
<![CDATA[ Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June ]]>
Publisher : <![CDATA[Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia ]]>
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DOI: 10.29303/jbt.v22i2.3509
<![CDATA[Fish is one of the aquatic organisms that is often used as a biological indicators of heavy metals in waters. The purpose of the research about analysis of cadmium (Cd) heavy metal content in headsnake fish (Channa striata) derived from Rawa Taliwang Lake, West Sumbawa Regency 2021 is to determine the cadmium in headsnake fish from Rawa Taliwang Lake. The research was conducted for 2 months, starting from September-October 2021. Sampling was carried out by purposive sampling at 2 research stations. Fish samples were taken 2 fishes at each station using gill nets and plaited rattan fish trap. The fish species taken were headsnake fish. The research sample was then analyzed in the West Nusa Tenggara Health, Testing and Calibration Laboratory. The data analysis was carried out by taking muscle tissue from headsnake fish and then analyzing the content of heavy metal in the from cadmium using AAS (Atomic Absorbtion Spectrophotometry). The measurement result showed that heavy metal content of cadmium in headsnake fish from Rawa Taliwang Lake ranged from 0,115 mg/kg (ppm) to 0,161 mg/kg (ppm). This shows that Rawa Taliwang Lake has been contaminated by cadmium exceeds the threshold set by Food and Drug Supervisory Agency (BPOM) No.5 of 2018 concerning the Maximum Limit of Heavy Metal Contamination in Processed Food which is 0,1 mg/kg.]]>
<![CDATA[The Effect of Seed Weight on Growth of Seaweeds Kappaphycus alvarezii in Integrated Marine Aquaculture of Ekas Bay, East Lombok Regency ]]>
<![CDATA[Lalu Sofyan Satria Jaya]]>;
<![CDATA[Muhammad Junaidi]]>;
<![CDATA[Nanda Diniarti]]>
<![CDATA[ Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June ]]>
Publisher : <![CDATA[Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia ]]>
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DOI: 10.29303/jbt.v22i2.3551
<![CDATA[Integrated marine aquaculture or known as Integrated Multi-Tropical Aquaculture (IMTA) is an alternative development in aquaculture activities under the concept of environmental conservation. There are several important aspects in supporting the success of seaweed cultivation including the use of the right weight of seeds at the beginning of cultivation activities. The purpose of this study was to analyze the effect of seedling weight on the growth of Kappaphycus Alvarezii seaweed cultivated in integrated cultivation areas and to determine the best use of seed weight. This study used a completely randomized design (CRD) consisting of 4 treatments and 3 replications to obtain 12 experimental units. The treatments used were the initial seedling weights of 50 g, 100 g, 150 g, and 200 g. The results showed that the effect of different seed weights on the integrated cultivation system with the longline method showed that the absolute average growth obtained ranged from 57.67 g to - 149.00 g while the average specific growth rate of seaweed ranged from 1.28%/day to - 3 ,31%/day and the best chlorophyll-a was found in the 50 g treatment with a value range of 0.628 mg/L to - 1.520 mg/L. It can be concluded that the use of seed weight gave a significantly different effect on the absolute growth and specific growth rate of Kappaphycus Alvarezii seaweed that was cultivated in an integrated manner and the use of the best seed weight with the best weight was 50 g.]]>
<![CDATA[The Diversity of Lichens in The Tourist Area of The Stokel Waterfall Central Lombok ]]>
<![CDATA[Suniyanti Suniyanti]]>;
<![CDATA[Mahrus Mahrus]]>;
<![CDATA[I Gde Mertha]]>
<![CDATA[ Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June ]]>
Publisher : <![CDATA[Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia ]]>
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DOI: 10.29303/jbt.v22i2.3586
<![CDATA[Lichen is a symbiosis of fungi and algae cause morphology and physiology are in one unit. It can be an indicator for environmental monitoring, especially as a bioindicator of air pollution, and therefore deserves more attention in the tropics. Data for the diversity and distribution of lichens in the Nusa Tenggara region is still very lacking. Benang Stokel Waterfall Tourism has high potential as a diversity center for exploration that needs attention, including the lichen community. This study aims to know and find the diversity of lichen species in the Benang Stokel Waterfall Tourism Area. Collecting data used two methods, i.e., the exploration method and the transect with 50 plots in size 2m x 2m along the transect line. The lichen diversity index analysis used the Shannon-Wiener Diversity Index, and the species Diversity Index (H') was 2,019 (intermediate category). The study found nine species of lichens: Cryptothecia, Cryptothecia Stirton, Lepraria Lepraria, Lepraria sp., Graphis Scripta, Grapes sp., Opegrapha ara, dan Chiodecton sp., were fully identified. ]]>
<![CDATA[Consumer Behavior of Middle-Income Class Towards The Utilization of Medicinal Plants During The Covid-19 Pandemic ]]>
<![CDATA[Dudi Septiadi]]>;
<![CDATA[Pande Komang Suparyana]]>;
<![CDATA[Sharfina Nabilah]]>
<![CDATA[ Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June ]]>
Publisher : <![CDATA[Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia ]]>
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DOI: 10.29303/jbt.v22i2.3618
<![CDATA[Since the outbreak of Covid-19 in Indonesia, medicinal plants have become viral and are in great demand by the public. The application of healthy living behavior by consuming medicinal plants is one of the efforts for the community to maintain health and increase immunity. The objectives of th is research are to; 1) explain the development and role of the middle-income class in the Indonesian economy; 2) analyze middle-class behavior related to the literacy level of middle-income class society; 3) analyze the behavior of the middle-income class in consuming medicinal plants as an effort to increase immunity. The research method used in this research is a descriptive qualitative approach. The number of samples used in the study is 90 respondents. Based on the research results, it shows that the growth of the middle-income class from 2012 to 2020 has increased by 64% to 68.2 million people. A large number of middle-class people in Indonesia have played a role in supporting the domestic economy in terms of consumption expenditure. Based on this research, the highest number were middle-class people with moderate levels of literacy, which is 44 percent. Middle-class people who have a high literacy rate are as much as 25 percent. Meanwhile, the middle-class people with low literacy levels are quite a lot, namely 31 percent. The interest of the middle class in consuming medicinal plants is relatively high. There were 32 middle-class respondents who had a high interest in consuming medicinal plants during the Covid-19 Pandemic.]]>
