scholarly journals THE IMPACT OF SEAWEED FARMING ON THE PHYTOPLANKTON COMMUNITY STRUCTURE

2020 ◽  
Vol 6 (1) ◽  
pp. 16
Author(s):  
Parman Parakkasi ◽  
Chair Rani ◽  
Rajuddin Syamsuddin ◽  
Rahmadi Tambaru
Keyword(s):  
Environmental Factors ◽  
Coral Reefs ◽  
Positive Impact ◽  
Diversity Index ◽  
Species Number ◽  
Sandy Bottom ◽  
Seaweed Farming ◽  
Number Of Species ◽  
Phytoplankton Communities ◽  
The Impact

This study was aimed to analyze the impact of seaweed farming on changes in the structure of phytoplankton communities on various ecosystems and their relationship with environmental factors. The study was conducted in May-October 2017 in the waters of Karampuang Island, Mamuju Regency. Plankton samples were collectedfromthreecultivationareas, namely areas with sandy bottom (control), seagrass beds, and coral reefs. In each area, three media were placed with a longline system, size 40 x 30 m2 (as replication). Sampling was carried out at the beginning before initiation of the cultivation and every two weeks after cultivation was started for 42 days. Phytoplankton sampling and measurement of environmental factors were carried out at fivesamplingpoints representing the cultivation areas. In sandy areas, sampling was also applied in areas outside the cultivation at a distance of 25m and 50m. Variance analysis was used to analyze differences in the species number and abundance of phytoplankton. Ecological indices was used to test phytoplankton biodiversity. PCA was used to analyze its relationship with environmental factors. Differences in the species number and abundance of phytoplankton between farming areas according to temporal scale were found. The high number and speciesabundance of phytoplankton were found in seagrass areas and significantly different from coral reefs and sandy area. Seaweed farming at the beginning of the farming period showed a positive impact by increasing the number of species and abundance of phytoplankton, but then decreased after entering Week 4-Week 6, along with the occurrence of ice-ice disease on the seaweed. Diversity index value was classified as medium with high equality without the dominance of particular species. The high number of species and abundance of phytoplankton occured at second weeks in all cultivation areas which are characterized by abundance of zooplankton with environmental characteristics, i.e. high DO and low PO4, NO3, andDOM.

scholarly journals DIVERSITY OF ECHINODERMS (ECHINODERMATA) IN THE NORTH EASTERN ISLANDS, VIETNAM

2018 ◽  
Vol 18 (3) ◽  
pp. 296-303
Author(s):  
Do Cong Thung ◽  
Dao Minh Dong
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Species Number ◽  
Sandy Bottom ◽  
Species Numbers ◽  
Number Of Species ◽  
The North ◽  
North Eastern ◽  
Long Bay ◽  
Quang Ninh

41 species have been identified, belonging to 29 genera, 18 families, 10 orders and 5 classes of Echinoderms in Northeast islands, from Mong Cai (Quang Ninh) to Do Son (Hai Phong). Compared to previous publications, 15 species were first identified in the Tonkin Gulf. The diversity of species numbers shows that Oreasteridae and Holothuriidae have the highest number of species (5 species/family), similarly the genus Holothuri has the highest species number (5 species). Ha Long Bay - Cat Ba has 33 species; Co To - Thanh Lan has 24 species and Bai Tu Long has 25 species. Echinoderms live in three habitats: Sand, coral, reef. The highest number of species is living in the sandy bottom and coral reefs, 39% and the lowest number only about 10% in coral reefs and reef. Van Boi, Van Ha, Da Den, Bac Van, Hong Van have high density of Echinoderms, potentially becoming marine medicine yards.

Effect of Temperature on Butterfly Community (lepidoptera) at Gunung Meja Recreational Forest Area, Manokwari, Papua Barat

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Rawati Panjaitan
Keyword(s):  
Secondary Forest ◽  
Environmental Parameters ◽  
Forest Area ◽  
Effect Of Temperature ◽  
Species Number ◽  
Primary Forest ◽  
Residential Areas ◽  
Number Of Species ◽  
Butterfly Community ◽  
The Impact

<p>Gunung Meja is one of the forest areas in Manokwari, West Papua province. It has been designated as a recreational forest since 1980. Gunung Meja covers 460.25 ha and is located at 75–175 m a.s.l. Gunung Meja is directly adjacent to residential areas, therefore the community activities, such as felling trees and gardening, was conducted in the area frequently. These can interfered the existence of flora and fauna in the area, included butterflies. To reveal the impact of intrusive human activities on the forest area, it was necessary to obtain basic information about what flora and fauna are present there. This study was aim to record the butterfly community in the area. Observations of butterflies were done by scan sampling on primary forest, secondary forest, gardens and settlements. Sampling and measurement of environmental parameters were performed in the morning and afternoon for seven weeks. This study recorded 113 species and 4.049 individuals of butterflies. There were 75 species in primary forest, 77 species in secondary forest, and 63 species in gardens and settlements. The number of species found was still increasing until the last day of the observation. Shannon-Wiener index (H’) calculation showed that diversity in primary and secondary forests were 3.48 and 3.50, respectively, thus classified as high (H’ &gt; 3). Sorensen index calculation (C<em><sub>N</sub></em>) showed high value reaching 0.5 quantitatively. The numbers of butterflies both species number and individual number, observed in the morning were higher than those in the afternoon. There was significant effect (P &lt; 0.05) of temperature on the number of individual butterflies. The result of PCA analysis showed that the environmental parameters in primary forest, secondary forest, gardens and settlements influenced the number of species and number of individuals.</p>

An investigation of government employees’ support for public-private partnerships

2017 ◽  
Vol 30 (5) ◽  
pp. 467-486 ◽  
Author(s):  
Razilya Shakirova
Keyword(s):  
Environmental Factors ◽  
Positive Impact ◽  
Organizational Factors ◽  
Ordinary Least Squares ◽  
Public Private Partnerships ◽  
Least Squares Regression ◽  
Government Employees ◽  
Content Type ◽  
The Usa ◽  
The Impact

Purpose The purpose of this paper is to investigate the factors that may influence support of public-private partnerships (PPPs) by government employees potentially involved in designing and implementing cross-sectoral collaborations. Design/methodology/approach Based on an original survey of government employees in the USA, this study explores the impact of individual, organizational and environmental factors on their support for PPPs by employing ordinary least squares regression. Findings Among the individual factors, involvement in PPPs and concerns for efficiency have been identified as factors having positive impact on government employees’ support for PPPs. Male government employees seem to be less supportive of PPPs than female government employees. Environmental factors such as public opinion and appointed agency heads positively influence government employees’ views of PPPs. No evidence for the significant impact of organizational factors on government employee perceptions of PPPs was found. Research limitations/implications Factors influencing government employees’ attitudes may also have an effect on employees’ behaviors when involved in PPPs. Further studies may clarify how attitudes are translated into behaviors and how they influence the performance of PPPs. Investigations into government employees’ views of PPPs before and after their actual involvement in partnerships may allow for identifying changes in employees’ support for PPPs and their possible causes. Originality/value This study investigates the impacts of individual, organizational and environmental factors on government employees’ support for partnerships with the private sector that remain under-researched in the literature.

Recurrent speciation rates on islands decline with species number

2021 ◽  
Vol 288 (1949) ◽  
Author(s):  
Ryo Yamaguchi ◽  
Yoh Iwasa ◽  
Yuuya Tachiki
Keyword(s):  
Population Size ◽  
Species Number ◽  
Source Population ◽  
Research Attention ◽  
Number Of Species ◽  
Speciation Rates ◽  
Proportional Relationship ◽  
And Migration ◽  
The Impact

In an archipelagic system, species diversity is maintained and determined by the balance among speciation, extinction and migration. As the number of species increases, the average population size of each species decreases, and the extinction likelihood of any given species grows. By contrast, the role of reduced population size in geographic speciation has received comparatively less research attention. Here, to study the rate of recurrent speciation, we adopted a simple multi-species two-island model and considered symmetric interspecific competition on each island. As the number of species increases on an island, the competition intensifies, and the size of the resident population decreases. By contrast, the number of migrants is likely to exhibit a weaker than proportional relationship with the size of the source population due to rare oceanic dispersal. If this is the case, as the number of species on the recipient island increases, the impact of migration strengthens and decelerates the occurrence of further speciation events. According to our analyses, the number of species can be stabilized at a finite level, even in the absence of extinction.

DAMPAK PERKEMBANGAN PARIWISATA MINAT KHUSUS SNORKELING TERHADAP LINGKUNGAN: KASUS DESTINASI WISATA KARIMUNJAWA

2016 ◽  
Vol 10 (03) ◽  
pp. 13-28
Author(s):  
Sabda Elisa Priyanto
Keyword(s):  
Coral Reefs ◽  
Rural Areas ◽  
Traffic Congestion ◽  
Urban Areas ◽  
Negative Impact ◽  
Positive Impact ◽  
Natural Habitat ◽  
Tourist Attraction ◽  
Environment Impact ◽  
The Impact

The study will analyze the impact of tourism by the type of special interest tourism to the environment. Impact on the coast and islands, the impact on vegetation, the impact wildlife, and the impact on urban areas and rural areas. Positive impact on the coast and the island is the effort for preservation and conservation of coral reefs, reef fish, giant clams and turtles, and encouraged to make environmentallyfriendly tourism activities. The negative impact is a damage to coral reefs from snorkeling activities, and the loss of traditional land allotment to the beach. The positive impact on vegetation is their attempt to biodiversity and conservation of vegetation typical of Publications, and reforestation activities is to replant mangrove. Negative impacts on vegetation is illegal logging and the clearing of trees to increase tourist attraction as supporters of the main activities. commercialization of the plant for souvenirs. Positive impact on wildlife is their conservation, preservation, and biodiversity, the breeding of animals and relocating the animals to their natural habitat. The negative impact is going hunting animals as souvenirs and tourist consumption, harassment of wildlife photography, animal exploitation for pertujukan, changes in animal instincts, and the migration of animals. Positive impact on urban areas and rural areas is happening arrangement karimunjawa towns and villages, and their empowerment. The negative impact of pressure on the land for the opening of a new tourist attraction, there are exchange in the function of residential land into commercial land, and the occurrence of traffic congestion, noise pollution, air pollution, and pollution aesthetics.  Keywords: Environmental Impact, Tourism, Snorkeling

scholarly journals The Impact of Coral Conditions on the Structure of the Megabenthos Community Associated with the Coral Reefs of the Spermonde Islands

2020 ◽  
pp. 37-50
Author(s):  
K.P. Beatrix Tatipata ◽  
Supriadi Mashoreng
Keyword(s):  
Coral Reefs ◽  
Diversity Index ◽  
Coral Cover ◽  
Live Coral ◽  
Sea Waves ◽  
Species Diversity Index ◽  
Coral Reef Ecosystems ◽  
Check Method ◽  
The Impact ◽  
Line Intercept

Coral reefs are organisms that live on the bottom of the waters and are in the form of limestone (CaCO3) which is strong against sea waves so that it can prevent coastal erosion and is also a place for various types of animals associated with coral reef ecosystems that utilize coral polyps. as his food. Mega-benthos are biota / organisms with a size of more than 1 cm that live on or in the seabed, including the sticking, creeping and burrowing biota that is visible with the camera. The research was conducted using the Line Intercept Transect Method and the Benthos Reef Check Method. The results showed that the highest percentage of live coral cover was found on Badi Island 71.46% (Good coral condition category), the moderate coral condition category was represented by Kapoposang Island (46.02%) and the bad coral condition category was represented by Ballanglompo Island ( 7.92%). The highest diversity of species (H ') Mega-benthos is at station 3 (Badi Island) with the value of H' = 2.528 while the lowest is at station IV (Lumu-lumu Island) with the value of H '= 0.6365. So that the category of the megabenthos species diversity index in the research location can be said to be in the low to moderate category.

scholarly journals Diversity of Coral Genus Scleractinia in Tidung Island Waters, Seribu Islands, DKI Jakarta Province

2021 ◽  
Vol 9 (2) ◽  
pp. 157
Author(s):  
Jouvan Randy Ekel ◽  
Indri Shelovita Manembu ◽  
Hermanto Wem Kling Manengkey ◽  
Kakaskasen Andreas Roeroe ◽  
Medy Ompi ◽  
...  
Keyword(s):  
Coral Reefs ◽  
Diversity Index ◽  
Coral Growth ◽  
Limiting Factors ◽  
Anthropogenic Pressures ◽  
Conservation Area ◽  
Coral Genus ◽  
Rock Mining ◽  
The Impact ◽  
Line Intercept

Coral reefs are one of the most productive and diverse ecosystems on earth and provide ecosystem services. One of the islands of the Seribu Islands that has a coral reef ecosystem is Tidung Island. It is strategic and developing location makes this island used as a residential area, conservation area, and tourist destination. But the utilization has an impact on the damage of coral reefs through environmental and anthropogenic pressures. This study aims to determine coral diversity by identifying the coral genus Scleractinia and the factors that affect coral diversity. Observations were done on three different stations include 2 snorkeling areas and 1 natural area. The method used is LIT (Line Intercept Transect) and coral genus identification with Coral Finder Toolkit Indo Pacific 3.0. The results of identification obtained 16 coral genera namely genus Acropora, Montipora, Isopora, Favites, Leptastrea, Favia, Goniastrea, Montastrea, Platygyra, Echinopora, Porites, Pocillopora, Stylophora, Ctenactis, Pavona, dan Symphyllia, with the value of Diversity Index (H') in the waters of Tidung Island ranges from 0.94 – 2.34  in the category of low to moderate diversity. The parameters of water quality in Tidung Island, temperature, salinity, and acidity (pH) are relatively good for coral growth, but brightness is still relatively poor for coral growth. The impact of human activities such as snorkeling, ship anchors, fishing with destroyers, oil and waste pollution, and rock mining are factors that affect coral growth and diversity.Keywords: Coral Scleractinia; Limiting Factors; Coral Finder; Tidung IslandAbstrakTerumbu karang adalah salah satu ekosistem yang paling produktif dan beragam di bumi serta menyediakan jasa ekosistem. Salah satu pulau dari gugusan Kepulauan Seribu yang memiliki ekosistem terumbu karang yaitu Pulau Tidung. Letaknya yang strategis dan berkembang menjadikan pulau ini dimanfaatkan sebagai kawasan permukiman, daerah konservasi, dan kawasan tujuan wisata. Namun dari pemanfaatan tersebut memberikan dampak terhadap kerusakan pada terumbu karang melalui tekanan-tekanan lingkungan maupun antropogenik. Penelitian ini bertujuan untuk mengetahui keanekaragaman karang dengan mengidentifikasi genus karang Scleractinia dan faktor yang mempengaruhi keanekaragaman karang. Pengamatan di tiga stasiun berbeda yaitu di antaranya 2 kawasan wisata snorkeling, dan 1 kawasan yang masih alami. Metode yang digunakan yaitu LIT (Line Intercept Transect) dan identifikasi genus karang dengan Coral Finder Toolkit Indo Pasific 3.0. Hasil identifikasi didapatkan 16 genus karang yaitu genus Acropora, Montipora, Isopora, Favites, Leptastrea, Favia, Goniastrea, Montastrea, Platygyra, Echinopora, Porites, Pocillopora, Stylophora, Ctenactis, Pavona, dan Symphyllia, dengan nilai Indeks Keanekaragaman (H’) di perairan Pulau Tidung berkisar 0,94 – 2,34 berada pada kategori keanekaragaman rendah hingga sedang. Parameter kualitas perairan di Pulau Tidung, suhu, salinitas, dan derajat keasaman (pH) tergolong baik bagi pertumbuhan karang, namun kecerahan masih tergolong kurang baik bagi pertumbuhan karang. Dampak aktivitas manusia seperti snorkeling, jangkar kapal, penangkapan ikan dengan alat perusak, pencemaran minyak dan sampah, serta penambangan batu karang menjadi faktor yang mempengaruhi pertumbuhan dan keanekaragaman karang.

The Impact of Micro and Macro Environment on Entrepreneurial Success: Case of J&K MSMEs

2021 ◽  
pp. 231971452110618
Author(s):  
Rabinder Singh ◽  
Rajani Kumari Sarangal ◽  
Gurmeet Singh
Keyword(s):  
Environmental Factors ◽  
Structural Equation ◽  
Positive Impact ◽  
Small And Medium Enterprises ◽  
Business Environment ◽  
Economic Benefits ◽  
Entrepreneurial Success ◽  
Jammu And Kashmir ◽  
Medium Enterprises ◽  
The Impact

The present research is focussed on examining the influence of micro- and macro-environmental factors on entrepreneurial success; and the impact of entrepreneurial success on perceived socio-economic benefits in the Jammu and Kashmir (J&K) micro, small and medium enterprises (MSMEs) sector. The information was gathered from 373 entrepreneurs of MSME from different industrial areas of J&K (India). Structural equation modelling (SEM) has been applied to study the relationship among various variables and to develop the model. The findings of the study showed that various micro- and macro-environmental factors significantly influence entrepreneurial success in J&K (India). Furthermore, the study also depicted that entrepreneurial success has a significantly positive impact on perceived socio-economic benefits in J&K (India). Finally, an entrepreneurial environmental and entrepreneurial success model was also developed for strategizing socio-economic development in J&K (India). The study suggests economists and policymakers to use entrepreneurship as an engine to stimulate economic growth, generate job opportunities and overcome poverty. The present study collected information from entrepreneurs of MSMEs operating in different districts of J&K (India). The study is imperative because of its empirical nature within the area of the business environment, entrepreneurial success and its perceived socio-economic impact on the J&K’s MSMEs sector, as little has been done in this area.

scholarly journals Concentrations and Emissions of Ammonia from Different Laying Hen Production Systems of Conventional Cage, Aviary and Natural Mating Colony Cage in North China Plain

2020 ◽  
Vol 10 (19) ◽  
pp. 6820
Author(s):  
Yu Liu ◽  
Guoqiang Zhang ◽  
Li Rong ◽  
Zongyang Li ◽  
Shaojie Wang ◽  
...  
Keyword(s):  
Environmental Factors ◽  
North China Plain ◽  
North China ◽  
Production Systems ◽  
Positive Impact ◽  
Ventilation Rate ◽  
Laying Hen ◽  
Natural Mating ◽  
The Impact ◽  
Indoor And Outdoor

Ammonia (NH3) concentrations in summer were continuously monitored from three typical laying hen houses of CC (conventional cage), AV (aviary), and NM (natural mating colony cage) with manure belt systems in North China Plain to quantify their emission levels, to characterize the diurnal variations, and to investigate the impact of environmental factors. Diurnal profiles were acquired by hourly measurements, and the effect of environmental factors on NH3 emissions was presented by correlation analysis. The results showed that house-level NH3 emissions in summer were the highest in the NM at 27.16 ± 13.12 mg/h·hen, followed by the AV at 4.08 ± 3.23 mg/h·hen and the CC at 3.43 ± 1.46 mg/h·hen within a complete manure removal cycle, which were significantly affected by manure accumulation inside the houses. After manure removal, NH3 concentrations were reduced by 64.29%, 28.57%, and 35.71% in CC, AV, and NM, and consequently their emissions were lowered by 67.12%, 71.36%, and 55.69%, respectively. It was suggested that the manure should not be stored on the belt for more than 4 days in NM. A positive impact of indoor and outdoor temperature and ventilation rate on NH3 emissions from AV and NM were found, while indoor and outdoor relative humidity had a negative effect. However, the above five factors did not significantly affect the emissions from CC.

scholarly journals The Impact of Environmental Factors on Organizational Adoption of Human Resource Analytics in Sri Lankan Large-Scale Apparel Companies

2020 ◽  
pp. 7-19
Author(s):  
K. M. Hettiarachchi ◽  
H. M. S. D. Bandara ◽  
M. C. G. Amarasinghe ◽  
U. S. Sirigampola ◽  
C. L. Kuruppu
Keyword(s):  
Environmental Factors ◽  
Human Resource ◽  
Large Scale ◽  
Positive Relationship ◽  
Positive Impact ◽  
Organizational Level ◽  
Sri Lankan ◽  
Human Resource Professionals ◽  
Apparel Companies ◽  
The Impact

This study focuses on investigating the impact of environmental factors on organizational level of adoption to Human Resource Analytics in Sri Lankan apparel companies. Four variables were considered to develop the conceptual model under environmental factors impacting the adoption of Human Resource Analytics performed in prior studies. The sample consists with 210 Human Resource professionals which were taken based on nine out of thirteen key apparel companies in Sri Lanka. The findings revealed that the environmental factors and the organizational level of adoption have a positive relationship. The results indicated that the environmental factors lead to a strong positive impact on the organizational level of adoption.

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