scholarly journals The sustainability of the diversity of marine macrofauna associated with seagrass through ecotourism in The Mandalika Exclusive Economic Zone Lombok Island, Indonesia

2021 ◽  
Vol 913 (1) ◽  
pp. 012053
Author(s):  
L Zulkifli ◽  
L R Patech ◽  
A Lestari ◽  
F Fidiantara ◽  
A A Idrus ◽  
...  
Keyword(s):  
Environmentally Friendly ◽  
Positive Influence ◽  
Economic Benefits ◽  
Line Transect ◽  
Marine Biota ◽  
Natural Habitats ◽  
Seagrass Ecosystem ◽  
Negative Effect ◽  
Syringodium Isoetifolium ◽  
Lombok Island

Abstract Ecotourism activities play an essential role in protecting and managing natural habitats and the species found in the habitat and creating economic benefits for the surrounding community. However, some parties state that ecotourism has a negative effect on the environment if it does not correctly follow the area’s rules and the ecotourism activities are not monitored and appropriately assessed. The objective of this study were : (i) to evaluate the diversity of seagrass and associated macrofauna at the Kuta ecotourism site in the Mandalika area of Lombok Island Indonesia and (ii) to know the response of the surrounding community and stakeholders in terms of the role of ecotourism in supporting the sustainability of the seagrass ecosystem in its function as an important factor in maintaining the diversity of marine macrofauna in the area. Data collection methods related to seagrass diversity and associated biota (Bivalves and Echinoderms) were carried out using the line transect method and the quadrat method. Meanwhile, the perception and response data of the community was obtained through observation and interviews. Data analysis was carried out in a qualitative descriptive manner. The results showed that there were 8 species of seagrass found. Seagrass species Syringodium isoetifolium and Cymodocea rotundata have the highest density of about 18.48 ind/m2, and Enhalus acoroides has the highest area of coverage, which is around 16.41 ind/m2. The highest macrofauna diversity was fish (10 families with 16 species) followed by Echinoderms (7 families with 9 species), and Bivalves (5 families with 7 species). Respondents in the fishermen category showed their understanding that ecotourism in their area plays an important role in supporting the sustainability of seagrass ecosystems, and this condition affects maintaining the diversity of associated marine macrofauna. This is supported by the findings that there has been a transition in the use of marine biota fishing gear, namely from the use of tools/methods that are not environmentally friendly to the use of tools/methods that are environmentally friendly. The most encouraging thing is that the use of bombs has completely stopped after ecotourism started in their area. Thus, it can be concluded that the existence of ecotourism in the Mandalika has had a positive influence on the behavior of fishing communities, especially in maintaining the seagrass ecosystem which is important in supporting the sustainability of marine macrofauna biodiversity in the Mandalika, South Coast of Lombok, Indonesia.

scholarly journals Relationship of Distribution Seagrass Species with Dugong (Dugong dugon) Sighting at Liki Island-Papua

Omni-Akuatika ◽  
2019 ◽  
Vol 15 (2) ◽  
pp. 92
Author(s):  
Aditya Hikmat Nugraha ◽  
Ilham Antariksa Tasabaramo ◽  
Udhi E Hernawan ◽  
Susi Rahmawati ◽  
Andri Irawan ◽  
...  
Keyword(s):  
Line Transect ◽  
Seagrass Species ◽  
Thalassia Hemprichii ◽  
Halophila Ovalis ◽  
Seagrass Ecosystem ◽  
Island Station ◽  
Halodule Uninervis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Relationship Of

Dugong dugon is a herbivorous marine mammal. One of Dugong's favorite foods is seagrass. This study examines the distribution of seagrass species to dugong sighting in Liki Island. The study was conducted in November 2018. Observation of seagrass conditions was carried out using a line transect method and a 50x50 cm transect with a distance interval between 10 m plots. Interviews were also conducted with the community to find out the location of Dugong presence in Liki Island. There are seven species of seagrass found in Liki Island :Enhalus acoroides, Cymodocea rotundata, Thalassia hemprichii, Halophila ovalis, Halodule uninervis, Halodule pnifolia and Syringodium isoetifolium spread over four observation stations. The results showed that  Dugong in Liki Island is often found during the eastern season, they often appear in seagrass ecosystem area to do eating activities. Dugong is often found in the eastern part of Liki Island (Station 4) and sometimes also found in the western part of Liki Island (Station 3).Keywords:biodiversity,Dugong dugon, liki, papua, seagrass

scholarly journals KONDISI EKOSISTEM DAN VALUASI EKONOMI LAMUN DI PANTAI SAMUH, NUSA DUA, BALI

2020 ◽  
Vol 14 (2) ◽  
pp. 201
Author(s):  
Cornelia Coraima Lazaren ◽  
Made Antara ◽  
Ida Ayu Astarini
Keyword(s):  
Economic Valuation ◽  
Economic Value ◽  
Secondary Data ◽  
Economic Benefits ◽  
Primary Data ◽  
Actual Condition ◽  
Marine Biota ◽  
Seagrass Ecosystem ◽  
Seagrass Ecosystems ◽  
Total Economic Value

Seagrass ecosystems in addition to providing economic benefits also have ecological functions, so it is highly recommended to conserve these ecosystems in order to preserve spawning areas, nurseries and habitats for fish and other marine biota. This study aims to identify the condition of seagrass ecosystems in Samuh Beach, Nusa Dua, estimating the economic value of the seagrass ecosystems in Samuh Beach, Nusa Dua and formulating for sustainable management of seagrass ecosystems in Samuh Beach, Nusa Dua. The study was conducted in January-March 2020 at Samuh Beach, Nusa Dua, Bali. Data collected includes secondary data and primary data. Secondary data were collected from related institutions, while primary data were collected through purposive sampling and questionnaires. The analysis used was description analysis, calculation of the economic value of marine resources through a Total Economic Value (TEV) and DPSIR analysis. This study found that the actual condition of the seagrass ecosystem resources in Samuh Beach is currently in the category of less rich/less healthy due to natural factors (substrate conditions) and human activity (anthropogenic). The economic value of seagrass ecosystems at Samuh Beach Nusa Dua, Bali showed the total economic value reached IDR. 327,843,325 per year and seagrass ecosystem management strategies that can be applied in the coastal area of ??Samuh Beach are the development of marine ecotourism, stock enrichment, and rehabilitation of seagrass beds. Keywords: Seagrass condition; TEV; economic valuation; Samuh beach.

Kestabilan Habitat Lamun Ditinjau Dari Komposisi dan Kepadatan Jenis

2012 ◽  
Vol 8 (1) ◽  
Author(s):  
Paskalina Th. Lefaan
Keyword(s):  
Line Transect ◽  
Seagrass Habitat ◽  
Pioneer Species ◽  
Thalassia Hemprichii ◽  
Climax Species ◽  
Halophila Ovalis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Cymodocea Serrulata ◽  
Stable Habitat

<em>Seagrasses habitats have both physical and ecological functions that support adjacent waters qualities and its dwelling organisms. There are varies of pressure on seagrass environmental, especially due to people activities that could decrease its function and habitat stabilities. The study aimed to determine about seagrass habitat stabilities from its species composition and/or densities. Line transect-plots and exploration methods were used in five locations of Manokwari coastal waters, that were, Andai, Rendani, Wosi, Briosi, and Tanjung Manggewa. There are five pioneer species (Cymodocea rotundata, Halodule pinifolia, H. uninervis, Syringodium isoetifolium, Halophila ovalis) and 3 climax species (Cymodocea serrulata, Enhalus acoroides, Thalassia hemprichii). The pioneer only found in Andai and Wosi, however both pioneer and climax encountered in three other locations. In Rendani and Tanjung Manggewa higher density of climax species (T. hemprichii) were 617.7 and 828.0 stands m-2, respectively, although in Briosi the higher pioneer (C. rotundata) of 570.7 stands m-2. These conditions showed that seagrass habitat in Rendani and Tanjung Manggewa are more stable compared to Briosi, as well as Andai and Wosi. It concluded that pioneer species found in newly formed habitat or disturbed, on the other hand, climax in more stable habitat.</em>

Pengaruh Hedonisme dan Religiusitas Terhadap Perilaku Konsumtif Mahasiswa

2020 ◽  
Vol 4 (1) ◽  
pp. 39
Author(s):  
Arif Rahmat ◽  
Asyari Asyari ◽  
Hesi Eka Puteri
Keyword(s):  
Consumer Behavior ◽  
Positive Influence ◽  
Cluster Sampling ◽  
Sampling Techniques ◽  
Negative Effect ◽  
Consumptive Behavior

<div class="WordSection1"><p align="center"> </p><p><em>This study aims to analyze the influence of hedonism and religiosity on the consumptive behavior of students at the Faculty of Islamic Economics and Business, State Islamic Institute of Bukittinggi, West Sumatera, Indonesia. The population in this studi was 3,900 students and the sample was 363 of them that were selected by using the cluster sampling techniques. The results showed that hedonism has a positive influence on the consumptive behavior of students, it means that the higher of the level of hedonism, the higher the consumptive behavior of students. Meanwhile, religiosity was found to have the negative effect on the consumptive behavior of students, its meant that  the higher the level of religious students, the lower the consumptive behavior of students, this study suggests that hedonism and religiosity explain variations in student consumer behavior by 64.5%, while the remaining 35.5% % is explained by other variables not explored in this study. This finding shows that to manage consumption properly, students must control their hedonism and increase their level of religiosity so that they will far from consumptive habits.</em></p><p> </p></div><p align="center"><strong><br clear="all" /></strong></p>

De relatie tussen herstel, werkdruk en slaap: een dagboekstudie

2010 ◽  
Vol 23 (4) ◽  
Author(s):  
Alicia L.T. Walkowiak ◽  
Ute R. Hülsheger ◽  
Fred R.H. Zijlstra
Keyword(s):  
Sleep Quality ◽  
Positive Influence ◽  
Mediating Effect ◽  
Mediation Effect ◽  
Diary Study ◽  
Work Pressure ◽  
Negative Effect ◽  
The Relationship ◽  
High Work

The relationship between recovery, work pressure and sleep quality: A diary study The relationship between recovery, work pressure and sleep quality: A diary study Alicia L.T. Walkowiak, Ute R.Hülsheger & Fred R.H. Zijlstra, Gedrag & Organisatie, volume 23, December 2010, nr. 4, pp. 316-332. Previous research showed that the experience of high work pressure can lead to fatigue and even to health complaints on the long term. This makes it very important, especially for people who experience high work pressure, to take sufficient time to recover after work. Sleep quality has a positive influence on recovery. The aim of this diary study was to investigate whether sleep quality has a mediating effect on the relationship between work pressure and recovery. Seventy-six people took part in the study and answered questions about work, recovery and sleep for 14 days. Results showed that work pressure indeed had a negative effect on recovery and sleep quality. Furthermore, we found a partial mediation effect: sleep quality mediated the relationship between work pressure and recovery. These results stress the importance of recovery and sleep quality, especially for people who experience high work pressure.

scholarly journals Physiological Response of Thallasia hemprichii on Antrophogenic Pressure In Pari Island, Seribu Islands, DKI Jakarta

2017 ◽  
Vol 22 (1) ◽  
pp. 40 ◽  
Author(s):  
Aditya Hikmat Nugraha ◽  
Dietriech G. Bengen ◽  
Mujizat Kawaroe
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Physiological Responses ◽  
Research Station ◽  
Marine Biota ◽  
Nursery Ground ◽  
Thalassia Hemprichii ◽  
Growth Physiology ◽  
Rhizome Growth ◽  
Seagrass Ecosystem

Seagrass ecosystem is one of tropical marine ecosystem and have important function. The function of ecosystem like a feeding and nursery ground for marine biota. Antrophogenic pressure is one of threat for seagrass ecosystem sustainability. This research study about effect antropogenic pressure for seagrass Thallasia hemprichii physiology response in some different location at Great Barrier Pari Island. The physiology response study cover growth, heavy metal bioaccumulation and histology analysis. The result shows that growth of leaf and rhizome Thalassia hemprichii have positif correlation with nutrient consentration in environment. The highest growth of leaf Thalassia hemprichii at 2nd station (4.16 mm.day-1) and the highest growth of rhizome Thalassia hemprichii at 4th station (1.3 mm.day-1). Seagrass can accumulation heavy metal from environment. The highest heavy metal accumulation is Pb. Not correlation between heavy metal consentration in seagrass with heavy metal concentration from environment. Analysis histology result that not damage seagrass tissue in all research station. Keyword : Bioacumulation,Growth,Physiology,Seagrass, Thalassia hemprichiiSeagrass ecosystems is one of the tropical marine ecosystems that have important functions, among others as a feeding and nursery ground for marine life. Anthropogenic stress is one of the threats that may inhibit the survival of seagrass ecosystems. This study examines the effects of anthropogenic pressures on physiological responses of seagrass Thalassia hemprichii at several different locations in Pari Islands. Physiological responses studied were leaves and rhizome growth, bioaccumulation of heavy metals and histological tissue analysis on seagrass. The results showed that the growth response of seagrass has a positive correlation with the nutrients in the environment. Seagrass leaf growth is highest at Station 2 (4.16 mm.day-1) and rhizome growth is highest at Station 4 (1.3 mm.day-1). Seagrass accumulate heavy metals from the environment and accumulation of heavy metals is highest on Pb. There is no correlation between the concentration of heavy metals in the seagrass and environment. The results of histological analysis showed that there was no damage to the tissue of seagrass leaf and rhizome. Keywords : Bio-acumulation, Growth, Physiology, Seagrass, Thalassia hemprichii

scholarly journals Self-Expressive Creativity in the Adolescent Digital Domain: Personality, Self-Esteem, and Emotions

2019 ◽  
Vol 16 (22) ◽  
pp. 4527 ◽  
Author(s):  
Pérez-Fuentes ◽  
Molero Jurado ◽  
Gázquez Linares ◽  
Oropesa Ruiz ◽  
Simón Márquez ◽  
...  
Keyword(s):  
Emotional Intelligence ◽  
High School Students ◽  
Personality Traits ◽  
Self Esteem ◽  
Positive Influence ◽  
Openness To Experience ◽  
Positive Development ◽  
Personality Factors ◽  
School Students ◽  
Negative Effect

Background: Although self-expressive creativity is related to cyberbullying, it can also reinforce strengths that contribute to positive adolescent development. Our study concentrated on the relationships between personality traits and self-expressive creativity in the digital domain in an adolescent population. For this, we analyzed the effect of self-esteem and emotional intelligence as assets for positive development related to personality traits and self-expressive creativity. Methods: The study population included a total of 742 adolescents that were high-school students in the province of Almería, Spain. The following instruments were used: Big Five Inventory (BFI) to evaluate the five broad personality factors, Rosenberg Self-Esteem Scale (RSE), Expression, Management, and Emotion Recognition Evaluation Scale (TMMS-24), and the Creative Behavior Questionnaire: Digital (CBQD). Results: The cluster analysis revealed the existence of two profiles of adolescents based on their personality traits. The analysis showed that the group with the highest levels of extraversion and openness to experience and lowest levels of neuroticism were those who showed the highest scores in self-esteem, clarity, and emotional repair, as well as in self-expressive creativity. Higher scores in neuroticism and lower scores in extraversion and openness to experience showed a direct negative effect on self-expressive creativity and indirect effect through self-esteem and emotional attention, which acted as mediators in series. Conclusions: To counteract certain characteristics that increase adolescents’ vulnerability to social network bullying, a plan must be developed for adequate positive use of the Internet from a creative model that enables digital self-expression for acquiring identity and self-efficacy through the positive influence of peers, which promotes feelings of empowerment and self-affirmation through constructive tasks that reinforce self-esteem and emotional intelligence.

scholarly journals Net Income and CSR Disclosure as Predictors Shares Price and Return per Share

2019 ◽  
Vol 10 (1) ◽  
pp. 81-91
Author(s):  
Wahyuni Rusliyana Sari ◽  
Anita Roosmalina Matusin
Keyword(s):  
Positive Impact ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Positive Influence ◽  
Net Income ◽  
Manufacturing Companies ◽  
Measurement Instruments ◽  
Environmental Liabilities ◽  
Negative Effect ◽  
Csr Disclosure

The purpose of this study was to determine the factors that influence shares price and return per share of 63 manufacturing companies period 2012-2016. The research method is multiple linear regression analysis, which done by the classical assumption test. The results of the research in the first model show that there is a positive influence between book value per share, net income, CSR social, and CSR report on shares price. While in the second model using the enter method shows delta net income and delta CSR total had a positive effect on return per shares, and delta CSR environment has a negative effect on return per share, while those using stepwise method delta CSR social and delta CSR net income had a positive impact on return per share. The contribution of this study is to provide information to stakeholders that CSR environment does not have an important role in shares prices, prioritizing the interests of shareholders, which means that the CSR environmental measurement instruments focus on disclosure, and ignore fundamental aspects, namely environmental liabilities. The implication is that the regulator, investor, and profession needs to more pay attention to CSR environmental.

scholarly journals The Promise of Turning Induced Deformation Process for Synthesizing Magnesium Based Materials with Superior Mechanical Response

Technologies ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 69
Author(s):  
Michael Johanes ◽  
Manoj Gupta
Keyword(s):  
Mechanical Response ◽  
Cutting Speed ◽  
Hot Extrusion ◽  
Positive Influence ◽  
Economic Benefits ◽  
Processing Method ◽  
Depth Of Cut ◽  
Machining Parameters ◽  
High Depth ◽  
Significant Positive Influence

In recent times, an alternative synthesis pathway involving severe plastic deformation for Mg-based materials has been explored involving the generation of turnings according to a set of machining parameters and cold compaction into billets followed by hot extrusion. This is known as the turning induced deformation (TID) method and has shown potential to alter the properties of resulting Mg-based materials for the better, not to mention economic benefits arising from this processing method. This work summarizes exploratory efforts involving this method for synthesis of Mg-based materials. The TID method resulted in overall superior properties compared to conventional processing methods, while two distinct parameters (high depth of cut and low cutting speed) were found to have significant positive influence on the final material properties, and as such are considered to be suitable basis on which further exploratory work in this field may be conducted.

scholarly journals ГИС-ПОДХОД ДЛЯ ОЦЕНКИ ВЛИЯНИЯ ОБЫЧНЫХ И СДВОЕННЫХ КОЛЕС НА ТВЕРДОСТЬ ПОЧВЫ

2015 ◽  
Vol 5 (03) ◽  
pp. 73-100
Author(s):  
A. V. Zhukov
Keyword(s):  
Penetration Resistance ◽  
Negative Influence ◽  
Positive Influence ◽  
Cultivated Plants ◽  
Gis Technology ◽  
Negative Effects ◽  
Soil Penetration Resistance ◽  
Surface Character ◽  
Top Soil ◽  
Negative Effect

<p>GIS-APPROACH application has allowed establishing that usual wheels of machine-tractor units carry out considerable influence on soil which exceeds visible borders of a track of wheels on the dimensions. This influence shows in augmentation of soil penetration resistance at 100-155 % in comparison with the control on depth of 0-10 cm and on 20-30 % on depth of 45-50 %. It is impossible to exclude that influence of wheels proceeds more deeply, than tests have been conducted. Critical for cultivated plants value of soil penetration resistance in 3 MPa under the influence of usual wheels of agricultural machinery comes nearer practically to a surface. Character of profile changes of hardness in various regions influences of wheels allows assuming the long season of a relaxation of soil for achievement of background values of soil penetration resistance. The further researches are necessary for an establishment of concrete indicators of dynamics. Negative influence of an overstocking does not confine only deterioration of conditions of growth of assemblages of rootlets of plants. Infringement of processes of moving of moisture in the soil, the accelerated evaporation and the slowed down processes of a filtration and an infiltration, destruction of modular frame, activization of erosive processes is possible. The understanding of these processes will give the chance volume understanding of real influence of running systems of machine-tractor devices on bedrock. Region intensive influence of dual wheels is circumscribed by the top soil layers (0-15 cm). The major feature of influence of dual wheels is absence of an overstocking above critical levels. It is impossible to exclude possible positive influence of moderate inspissations of soil under the influence of dual wheels for growth of agricultural crops and moisture conservation in soil. The cumulative negative effect on soil crossed vehicles traces is probable. The long season of a relaxation of soil after anthropogenic transformation can create a network of traces of vehicles in the field. In region crossings of traces negative effects considerably increase.</p> <p><em>Keywords: hardness of bedrock, GIS-TECHNOLOGY, technique influence</em></p>

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