scholarly journals Biodiversitas Krustasea (Decapoda, Brachyura, Macrura) dari Ekspedisi Perairan Kendari 2011 (Biodiversity of Crustacean (Decapoda, Brachyura, Macrura) from Kendari Waters Expedition 2011)

2012 ◽  
Vol 17 (1) ◽  
pp. 8 ◽  
Author(s):  
Rianta Pratiwi ◽  
Oce Astuti
Keyword(s):  
Food Chain ◽  
Environmental Conditions ◽  
Diversity Index ◽  
Similarity Index ◽  
Environmental Parameters ◽  
Environmental Data ◽  
Marine Resources ◽  
Small Islands ◽  
Mangrove Forests ◽  
The People

 Walaupun wilayah laut dan pesisir sangat penting untuk kehidupan rakyat dan bangsa Indonesia, secara nyata perairan Kendari belum digarap secara optimal, terutama kondisi dan potensi perikanan, khususnya kepadatan dan keanekaragaman krustasea. Penelitian ini bertujuan untuk mengungkapkan dan mengidentifikasi potensi sumber daya laut di pulau-pulau kecil disekitar perairan Kendari. Penelitian dilakukan dengan cara koleksi bebas menyusuri mangrove. Data yang diambil dari penelitian ini adalah data krustacea non ekomomis dan ekonomis serta data pendukung  lingkungan (suhu, pH dan salinitas). Hasil penelitian menunjukkan parameter lingkungan di beberapa lokasi masih relatif baik untuk kehidupan krustasea di daerah mangrove. Diperoleh 377 individu, 15  jenis, 12 famili dan 1 ordo individu krustasea. Kepadatan krustasea di setiap lokasi berbeda-beda. Indeks keanekaragaman (1,121-3,744) dan indeks keseragaman (0.360-0.610) termasuk sedang, yang menggambarkan bahwa penyebaran individu relatif sama serta indeks dominansi pada penelitian ini termasuk tinggi (0,190-0,620). Dengan diperolehnya data keanekaragaman krustasea di perairan Kendari sudah sepatutnya harus lebih dicermati lagi kondisi lingkungan dan keberadaan krustasea secara periodik karena krustasea merupakan salah satu rantai makanan yang juga penting di dalam ekosistem pesisir. Kata kunci: Krustasea, keanekaragaman, mangrove, perairan KendariAlthough the marine and coastal areas are very important for the life of the people and nation of Indonesia, Kendari waters significantly have not worked optimally, especially the condition and potential of fisheries, particularly the density and diversity of crustaceans. This study aims to reveal and identify the potential of marine resources in small islands around the waters of Kendari. Research carried out by way of free collection along the mangrove. Data from this study are from non economical, economical crustaceans and environmental data (temperature, pH and salinity) as well as to supporting the environmental. The results shows several areas of environmental parameters is still relatively good for the life of crustaceans in mangrove areas. Provided 377 individuals, 15 species, 12 families and 1 order of individual krustaseans. Krustasean densities at each location is different. Diversity index (1.121-3.744) and Similarity index (0,360-0,610) catagories in medium grade, which illustrates that the spread of crustacea is relatively the same. Index of dominance in this study was high (0.190-0.620). By obtaining data of  diversity crustaceans in the waters of Kendari, should be more rutiny and  should have been more better protecting the environmental conditions and also the presence of crustaceans periodically because crustaceans are one of the food chain are also important in the coastal ecosystem.Key words: Crustaceans, diversity, mangrove forests, waters Kendari

scholarly journals KEANEKARAGAMAN JENIS GASTROPODA DI HUTAN MANGROVE SUNGAI KAKAP KABUPATEN KUBU RAYA

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Emanuel Luis Rosario ◽  
M Sofwan Anwari ◽  
Slamet Rifanjani ◽  
Herlina Darwati
Keyword(s):  
Mangrove Forest ◽  
Local Community ◽  
Diversity Index ◽  
Similarity Index ◽  
Dense Medium ◽  
Mangrove Forests ◽  
Vegetation Density ◽  
Sparse Vegetation ◽  
Mangrove Tree ◽  
Observation Method

Gastropod is one of the mollusk phylum that can adapt and decompose in mangrove forests. The mangrove forest in Sungai Kakap is an area that is slowly being opened due to the local community people’s activities. They opened land to build buildings, farms, and villages. This research is aimed at studying the diversity of Gastropod and the influence of the mangrove tree density on the gastropod diversity in the mangrove forest of Sungai Kakap, Sungai Kakap Village of Kubu Raya Regency. The data were taken in May 2018. The analysis was conducted using the observation method by making six observation lines. The lines were differentiated based on the density of the vegetations: dense, medium, and sparse. The number of Gastropods found in the Kakap River mangrove forest is 4 types of gastropods with a total of 252 individuals. Respectively from dense, medium, and sparse vegetation, the gastropod dominance index is 0.68, 0.37, and 0.51; the diversity index is 0.25, 0.49, and 0.33; the species average index is 0.27, 0.97, and 0.4; and the gastropod species richness index is 4.03, 1.18, and 0.7. Lastly, the species similarity index is respectively 86%, 66%, and 86%. Keywords: Gastropod, Mangrove Forests, Vegetation density.

scholarly journals KEANEKARAGAMANPLANKTONDANLINGKUNGANPERAIRANMANGROVE DI DAERAHMAYANGAN, SUBANG, JAWABARAT

2017 ◽  
Vol 3 (5) ◽  
pp. 299
Author(s):  
Sri Endah Purnamaningtyas ◽  
Amran Ronny Syam ◽  
Didik WahjuHendro Tjahjo
Keyword(s):  
Dissolved Oxygen ◽  
Environmental Degradation ◽  
Food Chain ◽  
Diversity Index ◽  
Stable Condition ◽  
Environmental Parameters ◽  
Plankton Community ◽  
Phytoplankton Species ◽  
Phytoplankton Abundance ◽  
Zooplankton Communities

Eksploitasi sumber daya di daerah mangrove kawasan pantai utara Jawa telah mengalami degradasi lingkungan. Untuk melakukan perbaikan, diperlukan data dan informasi keanekaragaman plankton dalam rantai makanan disuatu perairan. Perairan Mayangan merupakan perairan estuari yang mempunyai potensi perikanan yang cukup besar karena daerah ini merupakan daerah penjebak zat hara sehingga mempunyai produktivitas yang tinggi dari perairan lainnya. Tujuan dari penelitian ini adalah untukmengetahui keragaman plankton dan lingkungan perairan di sekitar perairan mangrove Desa Mayangan, Subang, Jawa Barat. Penelitian ini dilakukan pada bulan Pebruari, Mei, dan Desember 2007. Pengambilan contoh plankton menggunakan kemmerer bottle sampler secara vertikal dengan plankton net nomor 25 pada kedalaman antara 0,5-2,0 m. Parameter lingkungan yang diamati meliputikecerahan 17-62 cm, oksigen terlarut 1,9-3,7 mg/l, nitrit 0,007-0,187 mg/l, nitrat 2,483-3,986mg/l, amonium1,589-2,648mg/l, orthofosfat 0,026-0,334mg/l, dan salinitas 19,27-33,08‰. Hasil penelitian ini menunjukkan komposisiplankton di perairan tersebut terdiri atas lima kelas fitoplankton dan empat kelas zooplankton serta satu kelompok larva naupli. Kelimpahan fitoplankton didominansi oleh kelas Bacillariophyceae (26 spesies), sedangkan zooplanktondidominansi oleh kelas Crustacea (tiga spesies), dan Ciliata (tiga spesies). Perairan mangrove Desa Mayangan termasuk perairan dengan kesuburan sedang, dengan kelimpahan fitoplankton berkisar antara 4.024-99.594 sel/l (35.210±19.313) dan kelimpahan zooplankton berkisar antara 1.006-23.138 ind./l (8.249±5.132). Indeks keragaman fitoplankton dan zooplankton menunjukan kondisi kestabilan komunitas dalam kategori sedang. Selama tiga periode pengamatan komunitas plankton tersusun dari 35 komponen (spesies fitoplankton) dan sembilan komponen (spesies zooplankton). Exploitation of resources in the area of mangroves in coastal areas north of Java has suffered environmental degradation. To make improvements, necessary data and information on the diversity of plankton in the food chain in the waters.Mayangan estuarine waters are waters that have potential for significant fisheries for this area is an area of trap nutrients that have a higher productivity than other waters. The purpose of this study is to investigate the diversity of plankton and marine environment in waters around mangrove Mayangan Village, Subang, West Java. Research done in February, May, and December 2007. Plankton sampling using kemmerer bottle sampler plankton net vertically with nomor 25 at depths between 0.5-2 m. Environmental parameters observed included brightness, tranparancy 17-62 cm, dissolved oxygen 1.9-3.7 mg/l, nitrite 0.007-0.187 mg/l, nitrate 2.483-3.986 mg/l, ammonium 1.589-2.648 mg/l, orthophosphate 0.026-0.334 mg/l, and salinity 19.27-33.08‰. The results showed the composition of plankton in these waters consist of five classes of phytoplankton and three classes and one group of zooplankton, larval naupli. Phytoplankton abundance class was dominated by Bacillariophyceae (26 species), while the zooplankton was dominated by the Crustacea (3 species) and Ciliate (3 species).Mangrove waters Village Mayangan including waters with medium fertility, with phytoplankton abundance ranged from 4,024-99,594 cells/l (35,210±19,313) and the abundance of zooplankton ranged between 1,006-23,138 ind./l (8,249±5,132). Diversity index of phytoplankton and zooplankton communities show stable condition in the medium category. During the three observation periods of plankton community composed of 35 components (phytoplankton species) and 9 components (species of zooplankton).

Concrete Carbonation in Mexico and Spain: DURACON Project, Four Year Evaluation

2016 ◽  
Vol 711 ◽  
pp. 12-20
Author(s):  
Eric Ivan Moreno ◽  
Andres Torres-Acosta ◽  
Jose Trinidad Pérez-Quiroz ◽  
Miguel Martínez-Madrid ◽  
Wilfrido Martínez Molina ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Environmental Parameters ◽  
Plain Concrete ◽  
Environmental Data ◽  
Concrete Durability ◽  
Concrete Carbonation ◽  
Concrete Mixtures ◽  
Exposure Site ◽  
Concrete Resistivity ◽  
Time Of Wetness

This work is part of the DURACON Ibero-American project, which seeks to characterize concrete durability under environmental conditions, based on reinforced concrete sample exposure in at least two different atmospheres (marine and urban), for each of the 11 countries in the project. Specimens were exposed to the environmental conditions of 13 Mexican sites (8 urban and 5 marine atmospheres). Concrete specimens were 15 x 15 x 30 cm, with 6 rebars each, and three concrete covers (15, 20 and 30 cm). Two concrete mixtures were used with water/cement ratios of 0.45 and 0.65, respectively. Six reinforced and six plain concrete specimens were placed on each exposure site. Environmental data was collected on each exposure site, including rainfall, relative humidity, time of wetness, temperature, wind velocity, and carbon dioxide/chloride concentrations. Corrosion rates and potentials, as well as concrete resistivity were measured in the reinforced samples. Carbonation depths were measured on the plain ones. The present work focused on the measurements of environmental parameters during the first two years of exposure to analyze the potentiality and the probability of carbonation-induced corrosion, and the evaluation of the corrosion initiation period for the reinforcing steel on the 13 Mexican exposure sites.

scholarly journals Kajian Pustaka Asesmen Status Kondisi Ekosistem Mangrove

2020 ◽  
Vol 1 (2) ◽  
pp. 48-56
Author(s):  
Gathot Winarso ◽  
Muhammad Kamal ◽  
Mohammad Syamsu Rosid ◽  
Wikanti Asriningrum ◽  
Jatna Supriatna
Keyword(s):  
Diversity Index ◽  
Good Condition ◽  
Ecological Integrity ◽  
Environmental Parameters ◽  
Mangrove Forests ◽  
Density Structure ◽  
Canopy Density ◽  
Mangrove Ecosystems ◽  
The Status ◽  
Potential Area

The mangrove area of the world has been decreasing and Indonesia has lost 1.6 million ha of mangrove during the period 1980-2005. In 2015 the status of Indonesia's mangroves was 3.5 million ha with 48% in good condition and 52% in degraded conditions. Therefore, mangrove forests should be conserved properly and utilized sustainably. Assessment of the status of mangrove conditions is essential in conservation planning and management so that it can be done better. However, the method for assessing the condition of mangrove forests is still diverse and has not been standardized, so a literature review and review of how to assess the condition of mangrove ecosystems from various literature needs to be done. The results of the study of various literatures, in general there are two types of assessments. The first assessment used canopy density indicators, tree density, structure and composition of vegetation including diversity index and environmental parameters which are used singly or a combination of some or all parameters and some that be correlated with ecological integrity. For the second assessment, using a comparison between the existing mangrove forest and the potential area to be overgrown with mangroves. There is a difference when assessing the potential area, there is the opinion of the area potentially seen by the status of the area whether or not the forest area, from the landsystem, the level of abrasion, pond area and the comparison of the coastline length overgrown with mangrove with a total coastline length. Both assessments with each indicator can be used in accordance with the objectives of the assessment of the condition.

scholarly journals Diversity and habitat characteristics of macrozoobenthos in the mangrove forest of Lubuk Kertang Village, North Sumatra, Indonesia

2018 ◽  
Vol 19 (1) ◽  
pp. 311-317 ◽  
Author(s):  
MOHAMMAD BASYUNI ◽  
KRISTIAN GULTOM ◽  
ANNISA FITRI ◽  
IPANNA ENGGAR SUSETYA ◽  
RIDHA WATI ◽  
...  
Keyword(s):  
Water Quality ◽  
Mangrove Forest ◽  
Diversity Index ◽  
Similarity Index ◽  
Principal Component ◽  
Habitat Characteristics ◽  
Mangrove Forests ◽  
Dominance Index ◽  
Plastic Bag ◽  
North Sumatra

asyuni M, Gultom K, Fitri A, Susetya EA, Wati R, Slamet B, Sulistiyono N, Yusriani E, Balke T, Bunting P. 2018. Diversity and habitat characteristics of macrozoobenthos in the mangrove forest of Lubuk Kertang Village, North Sumatra, Indonesia. Biodiversitas 19: 311-317. Mangrove plays an important role in coastal ecosystems including ecological, social, and economic aspects. This study aimed to determine the diversity of macrozoobenthos and water quality based on diversity index (H’), similarity Index (E), and dominance index (D) in the mangrove of Lubuk Kertang Village North Sumatra, Indonesia. The samples of macrozoobenthos (biological parameter) and water quality (physical and chemical parameters) were collected from fifteen plots in three different stations. Macrozoobenthos were collected in 1 m × 1 m transect in the mangrove forest. The biota was taken by using a shovel, inserted into a plastic bag, and identified. Results showed that eight species of macrozoobenthos were found and classified into three classes of Gastropod, Bivalvia, and Malacostraca. The highest diversity index (H′) of macrozoobenthos was found at Station II (2.39), the highest evenness index (E) was located at Station I (0.54), and the highest dominance index (D) was found at Station II (0.34). Principal component analysis (PCA) was used to determine the habitat characteristics of macrozoobenthos. PCA confirmed that station III was a habitat with suitable characteristics for the life of macrozoobenthos indicating the negative axis. The present study suggested four parameters namely salinity, clay temperature, and dissolved oxygen that should be preserved to support the survival of macrozoobenthos in the mangrove forests.

scholarly journals KOMUNITAS GULMA PADA PERKEBUNAN KAKAO (Theobroma cacao) DI DATARAN TINGGI DESA DONGI-DONGI DAN DATARAN RENDAH DESA SIDERA

Biocelebes ◽  
2019 ◽  
Vol 13 (3) ◽  
pp. 203-217
Author(s):  
Yayang Istikana ◽  
Wahyu Harso ◽  
Ramadanil Pitopang
Keyword(s):  
Light Intensity ◽  
Environmental Conditions ◽  
Theobroma Cacao ◽  
Diversity Index ◽  
Similarity Index ◽  
Environmental Condition ◽  
Weed Species ◽  
Ageratum Conyzoides ◽  
Cacao Plantation ◽  
Important Value Index

Different elevation of lands can affect environmental conditions such as light intensity, temperature, and humidity. The environmental conditions will affect the growth and species of weeds. The aim of this study was to compare the diversity and species composition of weed comunities on highland and lowland of cacao plantation.  The study was conducted by colecting the weed species from 25 plots with a size of 2 x 2 m. Every plot was placed by purposive sampling. The result showed that there were 26 species of weeds on highland while only 15 species of weeds were found on lowland. Weeds on highland was dominated by Ageratum conyzoides with  important value index (IVI) of 62.07% while on lowland was dominated by Euphorbia hirta with IVI of 26.56%. The weeds community has a medium diversity index while the value of Similarity Index (IS) was low (4.87%) between weeds community on highland and lowland. It could be concluded that different environmental condition would affect the number  and species of weeds.

scholarly journals KOMUNITAS AVIFAUNA DI SEPANJANG ALIRAN ANAK SUNGAI WAILAWA DESA TAWIRI KECAMATAN TELUK AMBON, KOTA AMBON

2018 ◽  
Vol 6 (2) ◽  
pp. 177
Author(s):  
Andri Tuhumury
Keyword(s):  
Mangrove Forest ◽  
Diversity Index ◽  
Mixed Forest ◽  
Bird Species ◽  
Similarity Index ◽  
Bird Communities ◽  
Mangrove Forests ◽  
Point Count ◽  
Wiener Diversity Index ◽  
Foraging Guild

The study was conducted in April 2017, located along the Wailawa watercourses, Tawiri Village, Ambon. The method applied in these studies were Point Count, while data analysis using Shannon-Wiener Diversity Index, Evenness Index, Domination Index, Similarity Index, and Guild Composition. The results showed that the number of bird species found along Wailawa watercourse were 28 species of 25 genera, 17 families, and 8 orders. The diversity of bird species is moderate (H ‘= 2,54). The bird species similarity analysis resulted in three bird communities, including: (1) bird communities in mangrove forest, estuaries with grass vegetation, (2) bird communities in garden and settlement habitats, and (3) bird communities in mixed forest habitat. Mangrove forest and estuaries have the highest species similarities (0,63). Estuaries and mix gardens have the lowest bird similarities (0,05). Bird communities in mangrove forests and estuaries are heterogeneous because they have more species with a more equitable distribution of species abundance, while in other habitat, their are homogenous because of relatively have a low species diversity with uneven distribution of species abundance.Penelitian ini bertujuan menganalisis komunitas burung, meliputi kekayaan jenis, keanekaragaman jenis, kelimpahan relatif, kemerataan jenis, foraging guild, serta kesamaan jenis. Penelitian dilakukan pada bulan April 2017, berlokasi di sepanjang Anak Sungai Wailawa, Desa Tawiri, Kota Ambon. Metode pengambilan data adalah metode point count, sedangkan analisis data menggunakan Indeks Keanekaragaman Shannon-Wiener, Indeks Kemerataan Jenis Evennes, Indeks Dominasi Jenis, Indeks Kesamaan Jenis, dan Foraging guild. Hasil penelitian menunjukkan jumlah jenis burung yang ditemukan sebanyak 28 jenis dari 25 genus, 17 famili, dan 8 ordo. Keanekaragaman jenis burung tergolong sedang (H’ = 2,54). Hasil analisis tingkat kesamaan komunitas menghasilkan tiga komunitas burung, meliputi : (1) komunitas burung di hutan mangrove-muara sungai bervegetasi rumput, (2) komunitas burung di kebun dan permukiman, serta (3) komunitas burung di kebun campur. Hutan mangrove dan muara sungai memiliki kesamaan jenis burung tertinggi, yakni 0,63. Muara sungai dan kebun campur memiliki kesamaan jenis burung terendah, yakni 0,05. Komunitas burung di hutan mangrove dan muara sungai adalah komunitas heterogen karena memiliki lebih banyak spesies dengan distribusi kelimpahan spesies yang lebih merata, sedangkan komunitas burung pada tipe habitat lainnya adalah komunitas homogen karena keragaman jenis relatif rendah dan distribusi kelimpahan spesies tidak merata.

scholarly journals Bird community structure of small islands: a case study on the Pahawang Island, Lampung Province, Indonesia

2020 ◽  
Vol 21 (2) ◽  
pp. 5-18
Author(s):  
Dian Iswandaru ◽  
Indra Gumay Febryano ◽  
Trio Santoso ◽  
Hari Kaskoyo ◽  
Gunardi Djoko Winarno ◽  
...  
Keyword(s):  
Diversity Index ◽  
Bird Species ◽  
Bird Community ◽  
Abundant Species ◽  
Iucn Red List ◽  
Feeding Guilds ◽  
Small Islands ◽  
Mangrove Forests ◽  
Number Of Species ◽  
Nesting Sites

Small islands are extremely vulnerable to ecosystem disturbances. One of the common factors im-pacting on island ecosystems is the rise of tourism activity and the associated conversion of man-grove forest’s function into tourism’s supporting facility. Those changes will ultimately affect the diversity of bird species inhabiting the island.  Therefore, this study aimed to analyse the structure of a bird community in the mangrove forests of the Pahawang Island. The study used the transect method with tracking implemented. The obtained data were analysed using the Shannon-Wienner diversity index. We recorded 28 species from 21 families. Out of 21 families, Columbidae had the highest number of species (three species). Seven feeding guilds were observed during the present study, the maximum number of species belonged to the insectivore group and the minimum – to the nectarivore and omnivore (1 species each) guilds. Based on the abundance rank, the most abundant species was the cave swiftlet (Collochalia linchi). Three of the recorded species are listed in the cat-egory “Protected” according to the Indonesia Law: the brahminy kite (Haliastur indus), sunda pied fantail (Rhipidura javanica), and the black-naped tern (Sterna sumatrana). All bird species that have been recorded during the present study is classified as “Least Concern” in the IUCN Red List. The values of the Shannon-Wienner index suggest neither high nor low diversity (H’ = 2.55). Mangrove forest ecosystems, including the mudflat on the Pahawang Island, are important supporting popula-tions of wild birds through providing foraging, roosting and nesting sites. 

Carabidae of Barnaul city parks: ecological characteristics and species composition

2018 ◽  
Vol 8 (2) ◽  
pp. 348-353
Author(s):  
E. A. Kuchina ◽  
N. D. Ovcharenko ◽  
L. D. Vasileva
Keyword(s):  
Species Composition ◽  
Diversity Index ◽  
Similarity Index ◽  
Life Forms ◽  
Ground Beetles ◽  
Forest Steppe ◽  
Ecological Groups ◽  
Dominant Group ◽  
Species Diversity Index ◽  
Steppe Species

<p>Anthropogenic impact on the population of ground beetles leads to a change in their numbers, structure of dominance, density, species composition, spectrum of life forms. This makes the beetles Carabidae a convenient and informative bioindicator of the ecological state of biocenoses. The material for this work was the Carabidae collections conducted in June-August 2016-2017 in the park zone of different regions of Barnaul, differing in location, area, hydrological regime, vegetation cover, purpose and anthropogenic load. When processing the material, the quantitative, species and generic composition of the carabidae was determined, calculations were made for such indicators as the Berger-Parker dominance index, the Shannon species diversity index (Hs), and the Jacquard species similarity index. The fauna (Coleoptera, Carabidae) of the park zone of Barnaul is represented by 55 species belonging to 20 genera. The dominant group is represented by species belonging to steppe, forest and polyzonal groups. Forest-steppe species of ground beetles as dominants have not been identified in any of the investigated territories. The greatest variety of ecological groups was noted on the territory of the Yubileyny рark, which is explained by the presence of zones with various microclimatic conditions, the presence of a birch grove that flows through the park with the Pivovarka River, and a wide log in the park. Registered species belong to eight groups of life forms belonging to two classes - zoophagous and myxophytophagous. On the numerical and species abundance, zoophages predominate. The spectrum of life forms corresponds to the zonal spectrum characteristic of the forest-steppe zone.</p><p> </p>

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