Log in

Relevant bibliographies by topics / Megabentos / Journal articles

To see the other types of publications on this topic, follow the link: Megabentos.

Journal articles on the topic 'Megabentos'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Megabentos.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Riniatsih, Ita, Ambariyanto Ambariyanto, and Ervia Yudiati. "Keterkaitan Megabentos yang Berasosiasi dengan Padang Lamun terhadap Karakteristik Lingkungan di Perairan Jepara." Jurnal Kelautan Tropis 24, no. 2 (May 21, 2021): 237–46. http://dx.doi.org/10.14710/jkt.v24i2.10870.

Full text

Abstract:

Seagrass bed are one of the ecosistems in shallow waters that can support the biodiversity of marine organisms. Megabenthos as benthic organisms that usually live in association in seagrass beds, have an important role in the food web in their habitat. This study aims to analyse the diversity of megabenthos associated with their habitat characteristics in seagrass waters in Bandengan, Teluk Awur and Panjang Island Jepara. This research was conducted using a descriptive field method, and megabenthos data collecting was carried out using the line transect method. Thr result showed that 158 individuals from 8 species of megabenthos were found (from 2 phyla: Echinodermata and Molluska) from three observation locations. Condition factors that influence the abundance and diversity of megabenthos are the substrat type and seagrass cover. Padang lamun sebagai salah satu ekosistem di perairan laut dangkal dapat menopang keanekaragaman hayati organisme laut. Megabentos yang termasuk dalam organisme bentik merupakan organisme yang biasa hidup berasosiasi di padang lamun, mempunyai peranan penting dalam jaring-jaring makanan di habitatnya. Penelitian ini bertujuan untuk menganalisa keanekaragaman megabentos dikaitkan dengan karakteristik habitatnya di perairan padang lamun di Bandengan, Teluk Awur dan Pulau Panjang Jepara. Penelitian ini dilakukan dengan metoda deskriptif lapangan, dan pengambilan data megabentos dilakukan dengan metoda line transek. Hasil pengamatan menunjukkan ditemukan 158 individu dari 8 spesies megabentos (dari 2 filum: Echinodermata dan Molluska) dari ketiga lokasi pengamatan. Faktor kondisi yang berpengaruh terhadap kelimpahan dan keanekaragaman megabentos adalah jenis substrat dasar dan tutupan lamun.

APA, Harvard, Vancouver, ISO, and other styles

2

Cappenberg, Hendrik A. W., and Thomas Mahulette. "SEBARAN DAN KEPADATAN MEGABENTOS DI PERAIRAN PULAU BUTON, SULAWESI TENGGARA." BAWAL Widya Riset Perikanan Tangkap 11, no. 2 (August 29, 2019): 79. http://dx.doi.org/10.15578/bawal.11.2.2019.79-93.

Full text

Abstract:

Perairan Pulau Buton dan sekitarnya dengan wilayah terumbu karang yang cukup luas, kaya keanekaragaman hayati laut dan nilai estetika yang tinggi. Terumbu karang bermanfaat banyak bagi manusia dalam berbagai aspek ekonomi, sosial, dan budaya. Penelitian megabentos pada ekosistem terumbu karang ini telah dilakukan pada 2016 (April), 2017 (Juni) dan 2018 (Mei). Pengamatan dilakukan pada 15 stasiun yang tersebar pada pulau-pulau besar dan kecil dari timur hingga barat. Tujuan penelitian ini untuk mengetahui sebaran dan kepadatan megabentos serta kemiripan spesies antar stasiun pada perairan tersebut. Pengambilan data dilakukan dengan menggunakan metode Reef Check Benthos (RCB). Hasil pengamatan menunjukkan ada delapan spesies megabentos, diantaranya Drupella cornus menyebar secara luas (100%), dan memiliki nilai total kelimpahan individu tertinggi, berkisar antara 35,7 – 57,9%, (472 – 704 individu). Sedangkan Acanthaster planci memiliki sebaran yang terbatas dengan kelimpahan individu yang rendah (0,3 – 1,0%). Kepadatan individu megabentos pada pengamatan April berkisar antara 0,16 – 2,31 individu/140m2, pada Juni berkisar antara 0,11 – 1,47 individu/140m2 dan 0,11 – 1,24 individu/140m2 pada Mei. Dari tiga tahun pengamatan (2016 – 2018) kelimpahan rata-rata individu megabentos tidak ditemukan adanya perbedaan yang signifikan. Hasil analisa klaster menunjukkan bahwa kehadiran setiap spesies megabentos antar stasiun pengamatan dipengaruhi oleh kemiripan tipe substrat dan habitat.The waters of Buton Island and its surrounding, has a large coral reef area with high species biodiversity and has an aesthetics value and beneficial for human being in many aspects such as economics, social and culture. Researches on megabenthos in coral reef ecosystems have been conducted in 2016 (April), 2017 (June) and 2018 (May) at 15 stations around large and small islands scattered from east to west. The aims of this study were to know the distribution and abundance of megabenthos and similarity of species between stations in these waters. Data collection is conducted using the Reef Check Benthos (RCB) method. The results shows that eight megabenthos was found, where Drupella cornus has a wide distribution (100%), and has the highest total value of individual abundance, ranging from 35.7 - 57.9%, (472 - 704 individuals). Whereas Acanthaster planci has a limited distribution with a low abundance of individuals (0.3 - 1.0%). The abundance of megabenthos in April’s observations ranged from 0.16 - 2.31 individuals/140m2, in June it ranged from 0.11 - 1.47 individuals/140m2 and 0.11 - 1.24 individuals/140m2 in May. In three years of observation (2016 - 2018) the average abundance of megabenthos individuals is not significantly different. The results of cluster analysis showed that the similarity of megabenthos species between observation stations was influenced by similarities in substrate type and habitat.

APA, Harvard, Vancouver, ISO, and other styles

3

Mutaqin, Bachtiar Wahyu, Emy Puspita Yuendini, Bagas Aditya, Isfi Nurafifa Rachmi, Muhammad Ilham Fathurrizqi, Shinta Ira Damayanti, Sufia Nur Ahadiah, and Novanda Nurul Aini Puspitasari. "KELIMPAHAN MEGABENTOS SEBAGAI INDIKATOR KESEHATAN KARANG DI PERAIRAN BILIK, TAMAN NASIONAL BALURAN, INDONESIA." JURNAL ENGGANO 5, no. 2 (September 30, 2020): 181–94. http://dx.doi.org/10.31186/jenggano.5.2.181-194.

Full text

Abstract:

Ekosistem terumbu karang adalah ekosistem laut yang sangat rentan oleh kerusakan lingkungan. Terumbu karang di perairan Bilik, Taman Nasional Baluran merupakan contoh ekosistem terumbu karang yang mengalami ancaman kerusakan lingkungan akibat perubahan iklim dan aktivitas manusia. Salah satu metode yang dapat digunakan untuk memonitor kesehatan terumbu karang adalah dengan melihat kelimpahan megabentos dalam ekosistem terumbu karang. Oleh karena itu, penelitian ini memiliki tujuan untuk mengetahui kesehatan ekosistem terumbu karang dengan melihat kelimpahan megabentos di perairan Bilik, Taman Nasional Baluran. Metode yang digunakan dalam inventarisasi megabentos adalah dengan Benthos Belt Transect dan analisis video di Blok Sijile dan Blok Jeding di Perairan Bilik. Hasil pengamatan menunjukkan bahwa di Blok Sijile tidak ditemukan ekosistem terumbu karang dan megabentos. Sementara itu di Blok Jeding ditemukan ekosistem terumbu karang dengan megabentos berupa bulu babi dan bintang laut biru. Kelimpahan bulu babi di dan bintang laut biru adalah 0-0,14 individu/m2. Kondisi tersebut menunjukkan bahwa kesehatan ekosistem terumbu karang di Blok Jeding perairan Bilik Sijile masih baik, namun perlu mendapat perhatian khusus karena sebagian area terumbu karang mengalami pemutihan akibat aktivitas perikanan yang tidak ramah lingkungan.MEGABENTHOS ABUNDANCE AS CORAL HEALTH INDICATORS IN BILIK WATERS, BALURAN NATIONAL PARK, INDONESIA. Coral reef ecosystems are marine ecosystems that are prone to environmental damage. Coral reefs in Bilik waters, Baluran National Park, are examples of coral reef ecosystems that are threatened by environmental damage due to climate change and human activities. One of the methods for health monitoring of coral reefs is by looking at the abundance of megabenthos in coral reef ecosystems. Therefore, this study aims to determine the health of coral reef ecosystems by looking at the abundance of megabenthos in Bilik waters, Baluran National Park. We used Benthos Belt Transect and video analysis to identify the spatial distribution and number of megabenthos in Sijile Block and Jeding Block, Bilik waters. The results showed that in Sijile Block, there were no coral reef neither megabenthos ecosystems. Meanwhile, in Jeding Block, there was a coral reefs ecosystem with megabenthos in the form of sea urchins and blue starfish. The abundance of sea urchins and the blue sea star in Jeding Block was about 0-0.14 individual/m2. These conditions indicate that the health of the coral reef ecosystem in Jeding Block, Bilik waters was still in good condition, even though it still needs special attention related to coral bleaching as a consequence of fisheries activities that are not environmentally friendly.

APA, Harvard, Vancouver, ISO, and other styles

4

Wulandari, Asri Triyani, Baru Sadarun, and Ratna Diyah Palupi. "HUBUNGAN KELIMPAHAN RELATIF KARANG HIDUP DENGAN KEPADATAN MEGABENTOS DI PERAIRAN WAWORAHA SULAWESI TENGGARA." Jurnal Sapa Laut (Jurnal Ilmu Kelautan) 5, no. 2 (May 16, 2020): 131. http://dx.doi.org/10.33772/jsl.v5i2.12167.

Full text

Abstract:

Terumbu karang merupakan ekosistem yang subur dan kaya akan makanan. Megabentos merupakan salah satu komunitas hewan bentik yang berasosiasi dengan terumbu karang. Tujuan penelitian ini yaitu untuk mengetahui kepadatan megabentos (bulu babi, bintang laut, teripang, lola, kima, lobster, siput drupella, dan bintang laut berduri), mengetahui kelimpahan relatif karang hidup serta hubungan kelimpahan relatif karang hidup dengan kepadatan megabentos di Perairan Waworaha Provinsi Sulawesi Tenggara. Pengambilan data kondisi karang dan fauna megabentos dilakukan dengan menggunakan metode Belt Transect yang ditarik sejajar garis pantai dengan luasan 350 m². Hasil penelitian yang didapatkan pada tiap stasiun adalah persentase kelimpahan relatif karang hidup di perairan waworaha termasuk tinggi dengan rata-rata persentase kelimpahan relatif karang hidup sebesar 70,28%. Nilai rata-rata kepadatan megabentos adalah 0,070 ind/m² dengan kepadatan tertinggi terdapat pada stasiun 3 yaitu 0,096 ind/m², dan kepadatan megabentos terendah terdapat pada stasiun 1 yaitu 0,030 ind/m². Perhitungan nilai hubungan kelimpahan relatif karang hidup dengan kepadatan megabentos didapatkan nilai r sebesar 0.929 bernilai positif yang artinya kelimpahan relatif karang hidup dan kepadatan megabentos memiliki hubungan yang sangat kuat.Kata kunci: Karang, Kepadatan, Megabentos, Waworaha

APA, Harvard, Vancouver, ISO, and other styles

5

Bangapadang, Messy, Emiyarti, and Wa Nurgayah. "KEPADATAN DAN KEANEKARAGAMAN MEGABENTOS BERDASARKAN PERSENTASE TUTUPAN KARANG DI PERAIRAN DESA BUTON, KECAMATAN BUNGKU SELATAN, KABUPATEN MOROWALI, SULAWESI TENGAH." Jurnal Sapa Laut (Jurnal Ilmu Kelautan) 4, no. 2 (August 6, 2019): 89. http://dx.doi.org/10.33772/jsl.v4i2.8327.

Full text

Abstract:

Bulu babi, bintang laut biru, teripang, kima, lola, siput drupella, lobster, dan bintang laut berduri merupakan organisme megabentos yang berasosiasi dengan terumbu karang. Terumbu karang adalah habitat bagi ribuan biota, baik yang hidup sementara maupun menetap selamanya. Penelitian ini bertujuan untuk mengetahui kepadatan dan keanekaragaman megabentos serta untuk mengetahui hubungan persentase tutupan karang dengan kepadatan dan keanekaragaman jenis megabentos di Perairan Desa Buton, Sulawesi Tengah. Penelitian ini dilaksanakan pada bulan Januari-April 2019, yang meliputi pengambilan data dan pengolahan data. Pengambilan data megabentos dilakukan dengan menggunakan metode Belt Transect yang ditarik sejajar garis pantai dengan luasan 150 m2. Untuk pengambilan data persentase tutupan karang menggunakan metode Line Intercept Transect (LIT) dengan menarik transek sejajar garis pantai sepanjang 60 m2. Nilai kepadatan megabentos yang tertinggi dengan nilai 2,37 ind/m2berada pada kondisi karang yang baik dengan nilai tutupan persentase 73,03% dan yang terendah dengan nilai 2,13 ind/m2berada pada kondisi karang yang sedang dengan nilai tutupan persentase 48,32%. Hasil indeks keanekaragaman jenis megabentos pada kondisi karang yang baik diperoleh 1,73, untuk kategori kondisi karang yang sedang diperoleh nilai 1,59, danuntuk kategori karang yang buruk diperoleh nilai 1,32. Hasil perhitungan korelasi kepadatan megabentos dengan persentase tutupan karang diperoleh nilai r = 0,57 dengan kategori hubungan sedang, sedangkan untuk hubungan keanekaragaman jenis dengan persentase tutupan karang sangat kuat diperoleh nilai r = 0,99.Kata Kunci: Megabentos, Kepadatan, Keanekaragaman, Desa Buton

APA, Harvard, Vancouver, ISO, and other styles

6

Sartimbul, Aida, Rafika Devi Agustin, Dhira Khurniawan Saputra, Defri Yona, Syarifah Hikmah Julinda Sari, Feni Iranawati, and Nurin Hidayati. "Dapatkah Megabentos Epifauna Tumbuh pada Geobag? Studi Kasus di Desa Banyuurip, Gresik." Buletin Oseanografi Marina 10, no. 2 (March 25, 2021): 133–42. http://dx.doi.org/10.14710/buloma.v10i2.34971.

Full text

Abstract:

Berbagai upaya telah dilakukan untuk mengatasi masalah abrasi di wilayah pesisir pantai Desa Banyuurip, Gresik. Upaya yang dilakukan salah satunya adalah reboisasi mangrove, namun upaya tersebut belum efektif, sehingga salah satu solusinya adalah dengan dipasangnya geosyntheticbag (geobag), yang merupakan kantong ramah lingkungan berisi pasir yang disusun dan dapat berfungsi sebagai perangkap sedimen dan pelindung pantai. Tujuan dari penelitian ini adalah untuk mengetahui pada bulan ke berapa biota dapat tumbuh pada geosintetik dan struktur komunitas biota yang tumbuh menggunakan metode random transek. Hasil penelitian menunjukkan bahwa megabentos epifauna dapat tumbuh pada geobag pada bulan ke-4 setelah pemasangan, yang terdiri dari 3 spesies yaitu Metopograpsus sp., Ostrea edulis, dan Fistulobalanus albicostatus. Kelimpahan jenis megabentos pada bulan ke-4 rata-rata mencapai 198 individu/m2, sedangkan kelimpahan pada bulan ke-5 mencapai 259 individu/m2. Hasil perhitungan indeks struktur komunitas megabentos pada bulan ke-4 dan ke-5 secara berurutan meliputi indeks keanekaragaman (H’) bernilai 0,10 dan 0,11; indeks keseragaman (c) bernilai 0,09 dan 0,10; dan indeks dominansi bernilai 0,96 dan 0,96. Berdasarkan penelitian ini, dapat disimpulkan bahwa geobag berfungsi sebagai pencegah abrasi serta sekaligus dapat menyatu dengan media di sekitarnya sehingga diklaim ramah lingkungan, karena dapat ditumbuhi biota yang tidak mengganggu atau merubah struktur komunitas biota di wilayah tersebut. Various attempts have been made to solve the abrasion in the coastal area of Banyuurip Village, Gresik. To overcome this problem, the community planted the mangroves, but these have not been effective. One solution to this problem is to install a geosynthetic bag (geobag), which is an environmentally friendly bag that is arranged and can be function as a sediment trap. The purpose of this study was to determine when the megabenthos can grow in the geosynthetic and how the community structure grow using the quadrant random transect method. The result showed that epifaunal megabenthos could grow on geobag at the fourth month after installation, which consisted of 3 species. The abundance of megabenthos at the 4th month averaged 198 individuals/m2, while the abundance at the 5th month reached 259 individuals/m2. The structure index (H’) in January and February were 0.10 and 0.11, respectively. The similarity index (C) were 0.09 and 0.10, and while the dominance index was 0.96 and 0.96. This study is suggested that the geobag can be function both as a deterrent to abrasion and simultaneously integrate with the surrounding media and be claim as environmentally friendly, because it can be overgrown with biota that does not disturb or change the structure of the biota community in the area.

APA, Harvard, Vancouver, ISO, and other styles

7

Akbar, Arham Hafidh, Sudirman Adibrata, and Wahyu Adi. "KEPADATAN MEGABENTOS PADA EKOSISTEM TERUMBU KARANG DI PERAIRAN DESA PERLANG BANGKA TENGAH, BANGKA BELITUNG." Akuatik: Jurnal Sumberdaya Perairan 13, no. 2 (October 22, 2019): 173–77. http://dx.doi.org/10.33019/akuatik.v13i2.1621.

Full text

Abstract:

This study aims to analyze the density of megabenthos in coral reef ecosystems in the waters of Perlang Village. This research was conducted in November 2019 in the waters of Perlang Village with the megabentos data collection method using the Bentos Belt Transect (BBT) method based on COREMAP CTI LIPI (2017) with 5 data collection stations. The results found 603 individuals consisting of 9 species from 4 megabenthos families in coral reef ecosystems. Species found at the study site are Diadema setosum, Diadema antillarium (Familli Deadematidae), Drupella cornus, Drupella rugosa (Family Murcidae), Trochus sp, Trochus conus, Tectus pyramis (Family Trochidae), Tridacna gigas, and Tridacna maxima (Family Tridacnidae) . The highest attendance percentage of all stations was obtained by Diadema setosum of 47.93% (289 people). Percentage of live coral cover from 5 observation stations ranged from 57.44% - 91.78%. Observation pensions that received the highest percentage of cover values were at pension 2 with 91.78% in the very good category.

APA, Harvard, Vancouver, ISO, and other styles

8

Arbi, Ucu Yanu, Agustinus Harahap, and Hendriks Alexander William Cappenberg. "Fluktuasi Kondisi Megabentos di Perairan Ternate, Maluku Utara." Jurnal Kelautan Tropis 23, no. 1 (February 13, 2020): 57. http://dx.doi.org/10.14710/jkt.v23i1.5491.

Full text

Abstract:

The coral reef was a habitat for several groups of biota that live in this ecosystem. Some species or group species of benthic fauna are known to be ecologically important and others are economically important so that they can be used as indicators to assess reef health. Research on megabenthic fauna in Ternate and its surrounding waters, North Maluku, was carried out in 2012, 2015, 2016, 2017 and 2018 at fourteen permanent stations. The purpose of this study was to determine the fluctuations in several megabenthic faunae temporarily. Data were collected using the modified Belt Transect Method, namely Benthos Belt Transek method. Eight species or groups of megabenthic fauna in the coral reef have been observed. The highest distribution and abundance of megabenthic fauna was coral polyps eating-snail of Drupella spp. The species wealth index decreased from 2012 to 2017 (1.17 to 1.05) but experienced an increase in 2018 (to 1.29). The relatively high dominance found in the megabenthic fauna community was observed in 2015, 2016 and 2017, while in 2012 and 2018 it had relatively low dominance. The megabenthic fauna community observed in 2012 and 2018 has relatively high diversity, whereas in 2015, 2016 and 2017, the diversity is relatively low. The megabenthic fauna community observed in 2012 and 2018 has spread evenly, while in 2015, 2016 and 2017, the relative prevalence of fauna is relatively uneven. Terumbu karang merupakan habitat bagi beberapa kelompok biota yang hidup di dalamnya. Beberapa spesies atau kelompok spesies bentos diketahui bernilai ekologis pentingdan yang lainnya bernilai ekonomis penting sehingga dapat dijadikan sebagai indikator untuk menilai kesehatan terumbu. Penelitian fauna megabentos di perairan Ternate dan sekitarnya, Maluku Utara dilakukan pada tahun 2012, 2015, 2016, 2017 dan 2018 pada empat belas stasiun permanen. Tujuan penelitian ini adalah untuk mengetahui fluktuasi beberapa indeks ekologi megabentos dari tahun ke tahun. Pengambilan data menggunakan metode Benthos Belt Transect yang dimodifikasi dari Belt Transect Method. Sebanyak delapan kelompok jenis atau kelompok jenis megabentos pada perairan terumbu karang telah diamati. Sebaran dan kelimpahan megabentos tertinggi adalah siput pemakan polip karang Drupella spp. Indeks kekayaan spesies mengalami penurunan tahun 2012 hingga 2017 (1,17 menjadi 1,05), namun mengalami peningkatan pada tahun 2018 (menjadi 1,29). Dominansi yang relatif tinggi dijumpai pada komunitas megabentos yang teramati pada tahun 2015, 2016 dan 2017, sedangkan pada tahun 2012 dan 2018 memiliki dominansi yang relatif rendah. Komunitas megabentos yang teramati pada tahun 2012 dan 2018 memiliki keanekaragaman yang relatif tinggi, sedangkan pada tahun 2015, 2016 dan 2017 berkeanekaragaman relatif rendah. Komunitas megabentos yang teramati pada tahun 2012 dan 2018 memiliki kemerataan fauna yang relatif merata, sedangkan pada tahun 2015, 2016 dan 2017 memiliki kemerataan fauna yang relatif tidak merata.

APA, Harvard, Vancouver, ISO, and other styles

9

A.W. Cappenberg, Hendrik, and Nebuchadnezzar Akbar. "Kondisi megabentos di perairan Kabupaten Sumba Timur, Provinsi Nusa Tenggara Timur." Jurnal Ilmu Kelautan Kepulauan 3, no. 2 (December 20, 2020): 130–46. http://dx.doi.org/10.33387/jikk.v3i2.2582.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Karlina, I., and F. Idris. "Habitat function of seagrass ecosystem for megabentos diversity in Teluk Bakau, North Bintan, Indonesia." IOP Conference Series: Earth and Environmental Science 241 (March 28, 2019): 012020. http://dx.doi.org/10.1088/1755-1315/241/1/012020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Riniatsih, Ita, and Munasik Munasik. "Keanekaragaman Megabentos yang Berasosiasi di Ekosistem Padang Lamun Perairan Wailiti, Maumere Kabupaten Sikka, Nusa Tenggara Timur." Jurnal Kelautan Tropis 20, no. 1 (July 19, 2017): 56. http://dx.doi.org/10.14710/jkt.v20i1.1357.

Full text

Abstract:

Padang lamun di Perairan Wailiti yang berlokasi di pesisir Teluk Maumere Kabupaten Sikka, NTT, merupakan salah satu ekosistem laut dangkal yang mempunyai keanekaragaman hayati yang relative tinggi. Ekosistem padang lamun sebagai salah satu ekosistem pesisir di perairan tersebut mempunyai keanekaragaman biota laut yang hidup berasosiasi di dalamnya. Penelitian yang dilakukan dengan metode deskripsi lapangan ini menunjukan hasil pengamatan bahwa ditemukan sekitar empat jenis lamun, yaitu: Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, dan Syringodium isoetifolium, tersebar di 3 stasiun pengamatan. Hasil analisa rata-rata % penutupan lamun sebesar 47,085% dengan kategori kondisi lamun di Perairan Wailiti Kabupaten Sikka dalam kondisi kerapatan sedang. Biota laut yang berasosiasi di padang lamun yang terlihat di lokasi pengamatan antara lain adalah bulu babi, teripang keling, teripang sabuk raja, bivalvia kima, gastropoda dan ular laut. Kata Kunci : Lamun, tutupan, Thalassia hemprichii, sebaran

APA, Harvard, Vancouver, ISO, and other styles

12

Supriyadi, Indarto Happy, Hendrik Alexander Cappenberg, Jemmy Souhuka, Petrus Christianus Makatipu, and Muhammad Hafizt. "KONDISI TERUMBU KARANG, LAMUN DAN MANGROVE DI SUAKA ALAM PERAIRAN KABUPATEN RAJA AMPAT PROVINSI PAPUA BARAT." Jurnal Penelitian Perikanan Indonesia 23, no. 4 (January 26, 2018): 241. http://dx.doi.org/10.15578/jppi.23.4.2017.241-252.

Full text

Abstract:

Suaka Alam Perairan (SAP) Raja Ampat memiliki ekosistem karang dengan nilai keanekaragaman spesies dan biota asosiasinya seperti ikan coralivora, herbivora, karnivora dan megabentos yang relatif tinggi. Keterkaitan ekosistem karang dengan ekosistem lainnya (lamun dan mangrove) masih terjaga dengan baik dalam perairan yang dilindungi. Namun keberadaan tiga ekosistem di Raja Ampat juga rentan terhadap perubahan lingkungan alam dan tekanan manusia. Tulisan ini bertujuan untuk menyediakan data dan informasi tentang kondisi awal karang, lamun dan mangrove yang dapat dijadikan referensi penilaian untuk ketiga ekosistem tersebut. Metode pengamatan kondisi karang, padang lamun dan mangrove menggunakan pedoman standar COREMAP-CTI 2014. Berdasarkan analisis citra landsat dapat dihitung luas habitat perairan dangkal (karang, pasir, padang lamun dan mangrove) adalah 3.521 ha. Ditemukan 108 spesies keanekaragaman karang dan persentase karang hidup (32,24%), sehingga termasuk kategori “sedang”. Hanya enam spesies lamun ditemukan dan kondisinya ‘sehat’ atau ‘baik’. Ditemukan 15 spesies mangrove, dua spesies diantaranya dominan yaitu Rhizophora apiculata dan Bruguiera gymnorhiza dengan kategori kondisi “baik”. Ekosistem karang, lamun dan mangrove merupakan ekosistem yang saling mendukung dalam peran dan fungsinya terhadap keberadaan sumber daya perikanan. Oleh karena itu, pemantauan secara berkala potensi ketiga ekosistem adalah penting dalam upaya menjaga keberlanjutan terhadap ketersediaan sumber daya perikanan.Natural Sanctuary of Waters (NSW) Raja Ampat with coral ecosystem and abundance of associated biota such as coralivora fish, herbivores, carnivores and megabenthos are relatively high. Linkage coral ecosystem to another ecosystem (seagrass and mangroves) is still good in preserve waters. However the existence of three ecosystems in Raja Ampat is also vulnerable to the environmental changes and human activity. The goal of this study is to provide data and preliminary information of the coral condition, seagrass and mangroves and should be used to reference assessment of those ecosystems. Method of ground ckeck on the condition of the coral, seagrass and mangrove was done by using standard COREMAP-CTI 2014. Based on the analysis of Landsat imagery it can be calculated the area of coastal waters (coral reef, sand, seagrass beds and mangroves) of about 3,521 ha. It was found the diversity of coral of 108 species and the percentage of live coral about 32.24% likely belong to the category of “moderate”. Only six species of seagrass was found and the condition of segrass was ‘healthy’ or ‘good’. Fifteen species of mangrove were found, two of them were dominant species such as: Rhizophora apiculata and Bruguiera gymnorhiza, the condition was categoried fairly “good”. Coral reefs, seagrass and mangrove ecosystems are together to support the role and functions to the existence of fisheries resources. Therefore, monitoring periodically of the potential of three ecosystems will be very important important to keep the sustainable uitlization utilisation of fisheries resources.

APA, Harvard, Vancouver, ISO, and other styles

13

Satyawan, Noar Muda, and Novita Tri Atriningrum. "KONDISI EKSISTING FAUNA MEGABENTHOS DI PERAIRAN LABUHAN PANDAN LOMBOK TIMUR PASCA GEMPA BUMI LOMBOK 7.0 SKALA RICHTER." Jurnal Biologi Tropis 19, no. 2 (September 28, 2019): 172. http://dx.doi.org/10.29303/jbt.v19i2.1303.

Full text

Abstract:

Abstrak : Gangguan eksternal pada ekosistem terumbu karang dapat terjadi secara alami ataupun karena aktifitas manusia yang menimbulkan perubahan fisik maupun ekologis. Perubahan ekologis dapat terlihat dari perubahan komposisi biota yang berasosiasi di dalamnya. Salah satu kelompok biota yang berasosiasi dengan terumbu karang adalah megabenthos. Tujuan dari penelitian ini adalah untk mengetahui kondisi eksisting fauna megabenthos pada ekosistem terumbu karang di perairan Labuhan Pandan Lombok Timur. Pengamatan dilakukan pada 5 stasiun yaitu Gili Bidara (BDR_01), Gili Kondo (KND_01), Gili Petagan 1 (PTG_01), Gili Petagan 2 (PTG_02), dan Gili Petagan 3 (PTG_03). Pengambilan data megabenthos dilakukan dengan metode Benthos Belt Transect (BBT). Hasil penelitian menunjukkan bahwa ditemukan 15 jenis megabenthos yang termasuk dalam 5 Phylum (Mollusca, Echinodermata, Chordata, Annelida, dan Platyhelminthes). Jumlah jenis tertinggi ditemukan pada phylum Echinodermata (10 jenis), kemudian diikuti oleh Mollusca (2 jenis), Chordata (1 jenis), Annelida (1 jenis), dan Platyhelminthes (1 jenis). Kepadatan megabenthos tertinggi ditemukan pada stasiun BDR_01 (10.571 ind/Ha), kemudian diikuti oleh stasiun KND_01 (10.214 ind/Ha), PTG_02 (9.857 ind/Ha), PTG_03 (8.429 ind/Ha) dan PTG_01 (1.714 ind/Ha). Keanekaragaman jenis tertingi ditemukan pada stasiun PTG_01 (H’=1,14), kemudian diikuti oleh BDR_01 (H’=0,76), KND_01 (H’=0,69), PTG_03 (H’=0,17) dan PTG_02 (H’=0,09). Hasil perhitungan indeks dominansi menunjukkan bahwa Didemnum molle (phylum Chordata) ditemukan dominan pada seluruh stasiun pengamatan. Ditemukan juga jenis megabenthos pemangsa hewan karang yaitu Acanthaster planci pada stasiun PTG_03 serta Drupella sp. pada stasiun BDR_01, KND_01 dan PTG_02. Beberapa jenis megabenthos yang ditemukan dapat dijadikan bioindikator dalam pemantauan kesehatan ekosistem terumbu karang di Perairan Labuhan Pandan, Lombok Timur.Kata Kunci: Kondisi eksisting, Megabenthos, Gempa Bumi, Labuhan Pandan, Lombok TimurAbstract: External disturbance to the coral reef ecosystem occured by naturally or due to human activities that cause physical and ecological changes. Ecological changes could be seen from changes in the composition of the associated biota. One of the biota groups that associated with coral reefs were megabenthos. The purpose of this study were to determine the condition of the megabenthos fauna on coral reef ecosystems in the Labuhan Pandan waters, Eastern Lombok. Observations were made at 5 stations namely Gili Bidara (BDR_01), Gili Kondo (KND_01), Gili Petagan 1 (PTG_01), Gili Petagan 2 (PTG_02), and Gili Petagan 3 (PTG_03). Data of Megabenthos were collected by Benthos Belt Transect (BBT) method. The results showed that found 15 species of megabenthos included in 5 phylum (Mollusca, Echinoderm, Chordata, Annelida, and Platyhelminthes). The highest number of species were found in Echinoderms phylum (10 species), followed by Mollusca (2 species), Chordata (1 species), Annelida (1 species), and Platyhelminthes (1 species). The highest megabenthos density were found at BDR_01 station (10,571 ind / Ha), then followed by stations KND_01 (10,214 ind / Ha), PTG_02 (9,857 ind / Ha), PTG_03 (8,429 ind / Ha) and PTG_01 (1,714 ind / Ha). The highest species diversity were found at stations PTG_01 (H '= 1.14), then followed by BDR_01 (H' = 0.76), KND_01 (H '= 0.69), PTG_03 (H' = 0.17) and PTG_02 (H '= 0.09). The calculation result of dominance index shows that Didemnum molle (phylum Chordata) were found dominant in all observation stations. Also found species of coral predator Acanthaster planci at PTG_03 station and Drupella sp. at stations BDR_01, KND_01 and PTG_02. Several species of megabenthos can be used as bioindicators to monitoring of coral reef health in Labuhan Pandan Waters, East Lombok.Keywords: Existing conditions, megabenthos, earthquake, Labuhan Pandan, Eastern Lombok

APA, Harvard, Vancouver, ISO, and other styles

14

Buhl-Mortensen, Lene, Kari E. Ellingsen, Pål Buhl-Mortensen, Kristian L. Skaar, and Genoveva Gonzalez-Mirelis. "Trawling disturbance on megabenthos and sediment in the Barents Sea: chronic effects on density, diversity, and composition." ICES Journal of Marine Science 73, suppl_1 (November 10, 2015): i98—i114. http://dx.doi.org/10.1093/icesjms/fsv200.

Full text

Abstract:

Abstract Bottom-trawl fisheries are expanding into deeper habitats and higher latitudes, but our understanding of their effects in these areas is limited. The ecological importance of habitat-forming megabenthos and their vulnerability to trawling is acknowledged, but studies on effects are few. Our objective was to investigate chronic effects of otter trawl fishery on substratum and megabenthos on the shelf (50–400 m) and slope (400–2000 m) in the southern Barents Sea. The study area represents a wide range in the history of fishing intensity (FI). Physical impact of trawling, density of trawl marks (TMs), was quantified on 250 video transects from shelf and slope, and megabenthos (>2 cm) composition was studied on 149 video transects from the shelf. The number of satellite-recorded vessels within grid cells 5 × 5 km was used as a proxy for FI in the TM analysis and for the megabenthos records within a 2-km radius around the transects. The effects of using different search area sizes were tested. Patterns in the density of TMs and megabenthos composition were compared with FI using linear regression and correspondence analysis. Occurrence of TMs was not directly related to FI but to bottom type, whereas megabenthos density and diversity showed a negative relation. For 79 of the 97 most common taxa, density was negatively correlated with FI. The sponges Craniella zetlandica and Phakellia / Axinella were particularly vulnerable, but also Flabellum macandrewi (Scleractinia), Ditrupa arietina (Polychaeta), Funiculina quadrangularis (Pennatulacea), and Spatangus purpureus (Echinoidea) were negatively correlated with FI, whereas asteroids, lamp shells, and small sponges showed a positive trend. Our results are an important step towards the understanding of chronic effects of bottom trawling and are discussed in relation to the descriptors “Biological diversity” and “Seafloor integrity” in the EU Marine strategic framework directive.

APA, Harvard, Vancouver, ISO, and other styles

15

Pitcher, C. Roland, Nick Ellis, William N. Venables, Ted J. Wassenberg, Charis Y. Burridge, Greg P. Smith, Matthew Browne, et al. "Effects of trawling on sessile megabenthos in the Great Barrier Reef and evaluation of the efficacy of management strategies." ICES Journal of Marine Science 73, suppl_1 (April 14, 2015): i115—i126. http://dx.doi.org/10.1093/icesjms/fsv055.

Full text

Abstract:

Abstract A series of related research studies over 15 years assessed the effects of prawn trawling on sessile megabenthos in the Great Barrier Reef, to support management for sustainable use in the World Heritage Area. These large-scale studies estimated impacts on benthos (particularly removal rates per trawl pass), monitored subsequent recovery rates, measured natural dynamics of tagged megabenthos, mapped the regional distribution of seabed habitats and benthic species, and integrated these results in a dynamic modelling framework together with spatio-temporal fishery effort data and simulated management. Typical impact rates were between 5 and 25% per trawl, recovery times ranged from several years to several decades, and most sessile megabenthos were naturally distributed in areas where little or no trawling occurred and so had low exposure to trawling. The model simulated trawl impact and recovery on the mapped species distributions, and estimated the regional scale cumulative changes due to trawling as a time series of status for megabenthos species. The regional status of these taxa at time of greatest depletion ranged from ∼77% relative to pre-trawl abundance for the worst case species, having slow recovery with moderate exposure to trawling, to ∼97% for the least affected taxon. The model also evaluated the expected outcomes for sessile megabenthos in response to major management interventions implemented between 1999 and 2006, including closures, effort reductions, and protected areas. As a result of these interventions, all taxa were predicted to recover (by 2–14% at 2025); the most affected species having relatively greater recovery. Effort reductions made the biggest positive contributions to benthos status for all taxa, with closures making smaller contributions for some taxa. The results demonstrated that management actions have arrested and reversed previous unsustainable trends for all taxa assessed, and have led to a prawn trawl fishery with improved environmental sustainability.

APA, Harvard, Vancouver, ISO, and other styles

16

Bergstad, OA, M. Gil, ÅS Høines, R. Sarralde, E. Maletzky, E. Mostarda, L. Singh, et al. "Megabenthos and benthopelagic fishes on Southeast Atlantic seamounts." African Journal of Marine Science 41, no. 1 (January 2, 2019): 29–50. http://dx.doi.org/10.2989/1814232x.2019.1571439.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Zakharov, D. V., L. L. Jørgensen, I. E. Manushin, and N. A. Strelkova. "Barents Sea megabenthos: Spatial and temporal distribution and production." Marine Biological Journal 5, no. 2 (June 30, 2020): 19–37. http://dx.doi.org/10.21072/mbj.2020.05.2.03.

Full text

Abstract:

This long-term observation of the faunal composition within the Barents Sea provides a benchmark for monitoring community changes caused by oceanographic variability, fishery activities, and crab predators (Chionoecetes opilio, Paralithodes camtschaticus), whose populations have been rapidly growing and spreading in recent years. In the Arctic systems, megabenthic communities comprise a significant part of benthic biomass and play an important role in carbon cycling on continental shelves. The gradual accumulation of knowledge on megabenthos may make it possible to assess their role in the ecosystem and ultimately contribute to a more rational management of the Barents Sea resources. This article represents an important series of long-term megabenthic observations in the Barents Sea. The main goal of our research is to identify spatial patterns and temporal trends in the megabenthic part of communities, including changes in the biomass and production values. As a part of the joint Norwegian-Russian ecosystem surveys, benthic experts have been identifying the invertebrates (megafauna) collected by bottom trawls during annual assessments of commercial stocks, such as Atlantic cod (Gadus morhua) and northern shrimp (Pandalus borealis). The sampling equipment used was a Campelen 1800 bottom trawl, rigged with rockhopper ground gear and towed on double warps, and standardized to a fixed sampling effort (equivalent to a towing distance of 0.75 nautical miles (nm), or 1.4 km). The processing of the biological material was conducted in accordance with standardized procedures, following the retrieval of each trawl. This work represents data from 5016 stations from 2005 to 2017, with a total sampled biomass of 238.4 tons and 14.9 million individual organisms. In total, 694 megabenthic species (1058 taxa) have been recorded, with the greatest diversity observed in the depth range of 100–400 m, while the largest mean catches were taken between depths of 600–800 m. The biomass (B) and production (P) values of the benthic megafauna were approximately stable during the 9 years of investigation, although there was a decreasing trend after 2014. The annual production P/B ratio of megabenthos was calculated to be at 0.3. The distribution, contribution to production, and gross biomass values of the megabenthos had been underestimated in the previous studies of zoobenthos. The results from this research show that, in the current warm period, the majority of the Barents Sea is in an intermediate state between the Arctic and boreal regions due to the wide distribution of boreal species toward the north. The dynamics of the mean biogeographical index (the border between areas of the dominance of boreal and Arctic species) within the central-southern part of the Barents Sea suggests that a large part of the area can be characterized as predominantly boreal intermediate since 2013.

APA, Harvard, Vancouver, ISO, and other styles

18

Sardà, Francisco, Joan E. Cartes, Joan B. Company, and Antoni Albiol. "A Modified Commercial Trawl Used to Sample Deep-Sea Megabenthos." Fisheries science 64, no. 3 (1998): 492–93. http://dx.doi.org/10.2331/fishsci.64.492.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

M., Kaiser, and Spence F. "Inconsistent temporal changes in the megabenthos of the English Channel." Marine Biology 141, no. 2 (August 1, 2002): 321–31. http://dx.doi.org/10.1007/s00227-002-0826-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Fredriksen, Rosalyn, Jørgen S. Christiansen, Erik Bonsdorff, Lars-Henrik Larsen, Marie C. Nordström, Irina Zhulay, and Bodil A. Bluhm. "Epibenthic megafauna communities in Northeast Greenland vary across coastal, continental shelf and slope habitats." Polar Biology 43, no. 10 (August 29, 2020): 1623–42. http://dx.doi.org/10.1007/s00300-020-02733-z.

Full text

Abstract:

Abstract The marine area of Northeast Greenland belongs to the largest national park in the world. Biodiversity assessments and tailored conservation measures often target specific physiographic or oceanographic features of an area for which detailed knowledge on their biological communities is incomplete. This study, therefore, characterizes epibenthic megafauna communities in a priori defined seabed habitats (fjord, shelf, shelf break and slope) and their relationship to environmental conditions in Northeast Greenland waters as a basis for conservation and management planning. Megabenthos was sampled from the Bessel Fjord across the shelf to the upper continental slope between latitudes 74.55°N–79.27°N and longitudes 5.22°W–21.72°W by Campelen and Agassiz trawls at 18 locations (total of 33 samples) at depths between 65 and 1011 m in August 2015 and September 2017. A total of 276 taxa were identified. Gross estimates of abundance ranged from 4 to 854 individuals 1000 m−2 and biomass ranged from 65 to 528 g wet weight 1000 m−2 (2017 only). The phyla Arthropoda and Porifera contributed the most to taxon richness, while Mollusca and Echinodermata were the most abundant, and Echinodermata had the highest biomass of all phyla. Fjord, shelf, shelf break and slope seabed habitats revealed different megafaunal communities that were partly explained by gradients in depth, bottom oxygen concentration, temperature, salinity, and turbidity. The present study provides a current baseline of megabenthos across seabed habitats in Northeast Greenlandic waters and reveals putative connections between Arctic and Atlantic biota.

APA, Harvard, Vancouver, ISO, and other styles

21

Tecchio, S., E. Ramírez-Llodra, F. Sardà, JB Company, I. Palomera, A. Mechó, R. Pedrosa-Pàmies, and A. Sanchez-Vidal. "Drivers of deep Mediterranean megabenthos communities along longitudinal and bathymetric gradients." Marine Ecology Progress Series 439 (October 20, 2011): 181–92. http://dx.doi.org/10.3354/meps09333.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Yau, Cynthia, Martin A. Collins, Phil M. Bagley, Inigo Everson, and Imants G. Priede. "Scavenging by megabenthos and demersal fish on the South Georgia slope." Antarctic Science 14, no. 1 (March 2002): 16–24. http://dx.doi.org/10.1017/s0954102002000536.

Full text

Abstract:

The scavenging megafauna of the South Georgia and Shag Rocks slope in the south-west Atlantic (625–1519 m) were investigated using autonomous baited camera systems. Two surveys were conducted: the first in 1997 (13 deployments) used a conventional 35 mm stills camera with a 200 J flash, whilst the second in 2000 (15 deployments) used low-light digital video cameras. The scavenging community responded rapidly to the arrival of bait on the sea floor and was dominated by stone crabs (Lithodidae) and toothfish (Dissostichus eleginoides). Stone crabs took up residence around the bait until it was consumed, with a maximum number of 108 in the field of view after four hours. The most frequently observed crab species was Paralomis formosa. Paralomis spinosissima, Neolithodes diomedea and Lithodes sp., were also observed. Toothfish were the most frequently observed scavenging fish and were seen during all but one deployment, typically making brief visits (1–2 min) to the bait, but appeared startled by the flash in the 1997 survey. Labriform swimming (sculling with the pectoral fins) was the principal form of locomotion in toothfish (0.22 body lengths (BL) sec−1), but they were capable of more rapid sub-carangiform (using caudal trunk and fin) motion (3 BL sec−1) when startled. Other scavenging fish observed included the blue-hake Antimora rostrata, grenadiers (Macrourus spp.), skates, liparids and zoarcids.

APA, Harvard, Vancouver, ISO, and other styles

23

Tecchio, Samuele, Dick van Oevelen, Karline Soetaert, Joan Navarro, and Eva Ramírez-Llodra. "Trophic Dynamics of Deep-Sea Megabenthos Are Mediated by Surface Productivity." PLoS ONE 8, no. 5 (May 17, 2013): e63796. http://dx.doi.org/10.1371/journal.pone.0063796.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Hossain, Moazzem, Tetsuya Amakawa, and Hideo Sekiguchi. "Density, Biomass and Community Structure of Megabenthos in Ise Bay, Central Japan." Fisheries science 62, no. 3 (1996): 350–60. http://dx.doi.org/10.2331/fishsci.62.350.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Johst, Karin, Julian Gutt, Christian Wissel, and Volker Grimm. "Diversity and Disturbances in the Antarctic Megabenthos: Feasible versus Theoretical Disturbance Ranges." Ecosystems 9, no. 7 (November 2006): 1145–55. http://dx.doi.org/10.1007/s10021-006-0054-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Long, BG, IR Poiner, and TJ Wassenberg. "Distribution, biomass and community structure of megabenthos of the Gulf of Carpentaria, Australia." Marine Ecology Progress Series 129 (1995): 127–39. http://dx.doi.org/10.3354/meps129127.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Schlacher, TA, MA Schlacher-Hoenlinger, A. Williams, F. Althaus, JNA Hooper, and R. Kloser. "Richness and distribution of sponge megabenthos in continental margin canyons off southeastern Australia." Marine Ecology Progress Series 340 (2007): 73–88. http://dx.doi.org/10.3354/meps340073.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Billett, D. S. M., B. J. Bett, A. L. Rice, M. H. Thurston, J. Galéron, M. Sibuet, and G. A. Wolff. "Long-term change in the megabenthos of the Porcupine Abyssal Plain (NE Atlantic)." Progress in Oceanography 50, no. 1-4 (January 2001): 325–48. http://dx.doi.org/10.1016/s0079-6611(01)00060-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Gutt, Julian, and Andreas Starmans. "Patchiness of the megabenthos at small scales: ecological conclusions by examples from polar shelves." Polar Biology 26, no. 4 (January 25, 2003): 276–78. http://dx.doi.org/10.1007/s00300-002-0468-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Shimizu, Kenji, Suguru Ohta, and Yoshihisa Shirayama. "Evaluation of Energy-Dispersive X-ray Spectrometry (EDX) for Analysis of Gut-contents of Megabenthos." BENTHOS RESEARCH 53, no. 2 (1998): 67–78. http://dx.doi.org/10.5179/benthos1996.53.2_67.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Narita, Teruyoshi, Moazzem Hossain, and Hideo Sekiguchi. "Seasonal and Interannual Variations in Biomass and Abundance of Megabenthos in Ise Bay, Central Japan." BENTHOS RESEARCH 58, no. 1 (2003): 75–85. http://dx.doi.org/10.5179/benthos1996.58.1_75.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Briggs, Kevin B., J. Kevin Craig, S. Shivarudrappa, and T. M. Richards. "Macrobenthos and megabenthos responses to long-term, large-scale hypoxia on the Louisiana continental shelf." Marine Environmental Research 123 (February 2017): 38–52. http://dx.doi.org/10.1016/j.marenvres.2016.11.008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Jones, Daniel O. B., Juan J. Cruz-Motta, David Bone, and Janne I. Kaariainen. "Effects of oil drilling activity on the deep water megabenthos of the Orinoco Fan, Venezuela." Journal of the Marine Biological Association of the United Kingdom 92, no. 2 (August 19, 2011): 245–53. http://dx.doi.org/10.1017/s0025315411001123.

Full text

Abstract:

The response of a deep-water megafaunal assemblage to sedimentation disturbance from hydrocarbon drilling was investigated using remotely operated vehicle video off the Atlantic coast of Venezuela. This was the first assessment of megafauna in bathyal waters in this region. A two-way analysis of variance (ANOVA) design was used to assess patterns in density and assemblage structure both temporally, before and after the drilling event, and spatially, at different distances from the disturbance. High levels of sedimentation occurred within a radius of 20 to 50 m from the drilling site. Megafaunal densities were reduced with high levels of disturbance (from 0.60 m−2 to 0.17 m−2 <20 m from the drilling site). The responses of motile and sessile fauna were different. Sessile fauna were most common (77% total) and reflected trends for total density. Motile megafaunal density was generally higher after drilling (up to double the pre-drill density). Species richness was reduced by disturbance and proximity to the disturbance. Multivariate ANOVA revealed significant differences in assemblage composition with distance and before and after drilling but no interaction. This was most likely a result of variable species-specific responses to disturbance. Megafaunal densities were generally much higher than reported densities from comparable depths in the Gulf of Mexico or from deeper locations in the Caribbean Sea. The responses to sedimentation disturbance were generally less obvious than observed elsewhere and may result from the fauna being adapted to the naturally high levels of sedimentation deriving from the Orinoco River.

APA, Harvard, Vancouver, ISO, and other styles

34

Kenchington, Ellen L., Trevor J. Kenchington, Lea-Anne Henry, Susanna Fuller, and Patricia Gonzalez. "Multi-decadal changes in the megabenthos of the Bay of Fundy: The effects of fishing." Journal of Sea Research 58, no. 3 (October 2007): 220–40. http://dx.doi.org/10.1016/j.seares.2007.04.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Wassenberg, T. J., G. Dews, and S. D. Cook. "The impact of fish trawls on megabenthos (sponges) on the north-west shelf of Australia." Fisheries Research 58, no. 2 (November 2002): 141–51. http://dx.doi.org/10.1016/s0165-7836(01)00382-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Briggs, KB. "Deposit feeding by some deep-sea megabenthos from the Venezuela Basin. selective or non-selective." Marine Ecology Progress Series 21 (1985): 127–34. http://dx.doi.org/10.3354/meps021127.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Zuyev, Yu A., and L. V. Pavlova. "Peculiarities of megabenthos distribution in the upper sublittoral zone of Kola Bay (the Barents Sea)." Doklady Biological Sciences 439, no. 1 (August 2011): 253–57. http://dx.doi.org/10.1134/s0012496611040181.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Lampitt, R. S., D. S. M. Billett, and A. L. Rice. "Biomass of the invertebrate megabenthos from 500 to 4100 m in the northeast Atlantic Ocean." Marine Biology 93, no. 1 (October 1986): 69–81. http://dx.doi.org/10.1007/bf00428656.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Fukushima, Tomohiko, Yoshihisa Shirayama, and Eiji Kuboki. "The Characteristics of Deep-Sea Epifaunal Megabenthos Community Two Years After an Artificial Rapid Deposition Event." Publications of the Seto Marine Biological Laboratory 39, no. 1 (December 2000): 17–27. http://dx.doi.org/10.5134/176293.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Durden, JM, BJ Bett, T. Horton, A. Serpell-Stevens, KJ Morris, DSM Billett, and HA Ruhl. "Improving the estimation of deep-sea megabenthos biomass: dimension to wet weight conversions for abyssal invertebrates." Marine Ecology Progress Series 552 (June 23, 2016): 71–79. http://dx.doi.org/10.3354/meps11769.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Doya, Carolina, Damianos Chatzievangelou, Nixon Bahamon, Autun Purser, Fabio C. De Leo, S. Kim Juniper, Laurenz Thomsen, and Jacopo Aguzzi. "Seasonal monitoring of deep-sea megabenthos in Barkley Canyon cold seep by internet operated vehicle (IOV)." PLOS ONE 12, no. 5 (May 30, 2017): e0176917. http://dx.doi.org/10.1371/journal.pone.0176917.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Gutt, Julian, and Thomas Schickan. "Epibiotic relationships in the Antarctic benthos." Antarctic Science 10, no. 4 (December 1998): 398–405. http://dx.doi.org/10.1017/s0954102098000480.

Full text

Abstract:

On the high Antarctic shelf, 374 different epibiotic relationships of the megafauna were photographically registered and statistically analysed. These comprised 47 different epibiotic and 96 substratum taxa and had obvious differences in abundance and presence in three different benthic assemblages. Six abundant obligatory relationships in which the epibiont occurred almost exclusively on one type of substratum had highly specialized epibionts. For an additional eight relationships, a statistical test revealed that the epibionts preferred specific living and elevated mineral substrata. Most of these relationships are interpreted as commensalism (sensu Odum) in which the suspension feeding epibiont profits from the elevated position. Here it has better access to food compared with life on the sediment. The evolution of a rich and mainly sessile epifauna on parts of the high Antarctic shelves and the successful development of epibiotic behaviour in other species are suggested as a major reason for the high species richness in the benthic fauna. The results provide evidence that the Antarctic megabenthos is more biologically accommodated than physically controlled.

APA, Harvard, Vancouver, ISO, and other styles

43

Tecchio, Samuele, Eva Ramírez-Llodra, Jacopo Aguzzi, Anna Sanchez-Vidal, M. Mar Flexas, Francisco Sardà, and Joan B. Company. "Seasonal fluctuations of deep megabenthos: Finding evidence of standing stock accumulation in a flux-rich continental slope." Progress in Oceanography 118 (November 2013): 188–98. http://dx.doi.org/10.1016/j.pocean.2013.07.015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Williams, Alan, Franziska Althaus, Piers K. Dunstan, Gary C. B. Poore, Nicholas J. Bax, Rudy J. Kloser, and Felicity R. McEnnulty. "Scales of habitat heterogeneity and megabenthos biodiversity on an extensive Australian continental margin (100-1100 m depths)." Marine Ecology 31, no. 1 (January 27, 2010): 222–36. http://dx.doi.org/10.1111/j.1439-0485.2009.00355.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Sard�, F., J. E. Cartes, and J. B. Company. "Spatio-temporal variations in megabenthos abundance in three different habitats of the Catalan deep-sea (Western Mediterranean)." Marine Biology 120, no. 2 (September 1994): 211–19. http://dx.doi.org/10.1007/bf00349681.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Kang, Su Min, Ok Hwan Yu, and Hyung Gon Lee. "Impact of Environmental Variables on the Diversity and Distribution of the Megabenthos in the South Sea of Korea." Journal of the Korean Society of Marine Environment and Safety 25, no. 3 (May 31, 2019): 354–65. http://dx.doi.org/10.7837/kosomes.2019.25.3.354.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Thresher, Ronald, Franziska Althaus, Jess Adkins, Karen Gowlett-Holmes, Phil Alderslade, Jo Dowdney, Walter Cho, et al. "Strong Depth-Related Zonation of Megabenthos on a Rocky Continental Margin (∼700–4000 m) off Southern Tasmania, Australia." PLoS ONE 9, no. 1 (January 22, 2014): e85872. http://dx.doi.org/10.1371/journal.pone.0085872.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Xu, Yu, Zifeng Zhan, and Kuidong Xu. "Morphological and Molecular Characterization of Five Species Including Three New Species of Golden Gorgonians (Cnidaria: Octocorallia) from Seamounts in the Western Pacific." Biology 10, no. 7 (June 26, 2021): 588. http://dx.doi.org/10.3390/biology10070588.

Full text

Abstract:

Members of genus Iridogorgia Verrill, 1883 are the typical deep-sea megabenthos with only seven species reported. Based on an integrated morphological-molecular approach, eight sampled specimens of Iridogorgia from seamounts in the tropical Western Pacific are identified as three new species, and two known species I. magnispiralis Watling, 2007 and I. densispicula Xu, Zhan, Li and Xu, 2020. Iridogorgia flexilis sp. nov. is unique in having a very broad polyp body base with stout and thick scales. Iridogorgia densispiralis sp. nov. can be distinguished by rods present in both polyps and coenenchyme, and I. verrucosa sp. nov. is characterized by having numerous verrucae in coenenchyme and irregular spindles and scales in the polyp body wall. Phylogenetic analysis based on the nuclear 28S rDNA indicated that I. densispiralis sp. nov. showed close relationships with I. splendens Watling, 2007 and I. verrucosa sp. nov., and I. flexilis sp. nov. formed a sister clade with I. magnispiralis. In addition, due to Rhodaniridogorgia fragilis Watling, 2007 nested into the Iridogorgia clade in mtMutS-COI trees and shared highly similar morphology to the latter, we propose to eliminate the genus Rhodaniridogorgia by establishing a new combination Iridogorgia fragilis (Watling, 2007) comb. nov. and resurrecting I. superba Nutting, 1908.

APA, Harvard, Vancouver, ISO, and other styles

49

Rybakova, Elena, Antonina Kremenetskaia, Andrey Vedenin, Antje Boetius, and Andrey Gebruk. "Deep-sea megabenthos communities of the Eurasian Central Arctic are influenced by ice-cover and sea-ice algal falls." PLOS ONE 14, no. 7 (July 16, 2019): e0211009. http://dx.doi.org/10.1371/journal.pone.0211009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Nakajima, Ryota, Hiroyuki Yamamoto, Shinsuke Kawagucci, Yutaro Takaya, Tatsuo Nozaki, Chong Chen, Katsunori Fujikura, Tetsuya Miwa, and Ken Takai. "Post-Drilling Changes in Seabed Landscape and Megabenthos in a Deep-Sea Hydrothermal System, the Iheya North Field, Okinawa Trough." PLOS ONE 10, no. 4 (April 22, 2015): e0123095. http://dx.doi.org/10.1371/journal.pone.0123095.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!