Biodiversitas Zooplankton di Perairan Pesisir Pulau Keffing pada Musim Peralihan II, Kabupaten Seram Bagian Timur

Zooplankton has an important role in thropic ecology at coastal area. According to their ecological function as the first consumer, zooplankton linked between producers (phytoplankton) and other marine organisms in the higher thropic level. The abundance of zooplankton in coastal area can be indicate as secondary productivity and as a food source for fisheries. This study aims to examine the biodiversity of zooplankton in coastal area of Keffing Island, Eastern Seram regency. Sampling was conducted in November 2017 during November (transitional season II) using NORPAC net (mesh size 300 micrometer) with vertical hauling from 10 meter of deep to the surface water. Samples were preserved with 4% formaldehyde and identify in the laboratory. The results showed that the biodiversity of zooplankton during transitional season II was 28 species, which copepods are the dominant taxa (13 species, 46.43% of total zooplankton). The total abundance of zooplankton is 351-1190 individu/m3, which Oncaea sp, Eucalanus sp and Corycaeus sp are abundant. Study biodiversity in coastal area of Keffing Island is important to support fisheries management programs. Avalaibility of data on the composition and abundance of zooplankton can be used as baseline data of secondary productivity and potency of natural food source in coastal area. Zooplankton mempunyai peranan penting dalam jejaring ekologi perairan pesisir. Posisinya sebagai konsumen pertama akan menghubungkan antara produsen dalam hal ini fitoplankton dengan biota pada tingkat tropik level di atasnya. Kelimpahan zooplankton di suatu perairan dapat menggambarkan produktivitas sekunder dan potensialitas pakan alami dari sumberdaya perikanan di suatu perairan. Penelitian ini bertujuan untuk mengkaji biodiversitas zooplankton di perairan pesisir Pulau Keffing, Seram Bagian Timur (SBT). Penelitian ini dilakukan pada bulan November 2017 (musim peralihan II). Pengambilan sampel dilakukan dengan menggunakan jaring NORPAC (mata jaring 300 mikrometer), ditarik secara vertikal dari kedalaman 10 meter menuju permukaan. Sampel dipreservasi menggunakan formalin 4%, dan diidentifikasi di laboratorium. Hasil penelitian menunjukkan bahwa biodiversitas zooplankton selama musim peralihan II sebanyak 28 jenis. Komposisi jenis copepoda mendominasi dengan 13 jenis (46,43% dari total komposisi zooplankton). Kelimpahan Total zooplankton berkisar antara 351-1190 ind/m3. zooplankton yang melimpah dari jenis Oncaea sp., Eucalanus sp. dan Corycaeus sp. Kajian tentang biodiversitas zooplankton di pesisir Pulau Keffing sangat penting untuk mendukung program pengelolaan sumberdaya perikanan. Ketersediaan data komposisi dan kelimpahan zooplankton dapat digunakan sebagai data dasar produktivitas sekunder dan potensi pakan alami di perairan

DYNAMICS OF SPATIAL ABUNDANCE OF ZOOPLANKTON IN MORELLA COASTAL WATERS, CENTRAL MALUKU

The dynamics abundance of zooplankton in Morella coastal waters is poorly known.The purpose of this study was to detemine the abundance of zooplankton in Morella coastal waters during Southeast Monsoon. This research was conducted in August 2011. Plankton samples were collected from five stations, by NORPAC net that was vertically hauled from 10 meter depth up to the surface (except in Station 5, less than 10 m). The result showed that composition of zooplankton in Morella consisted of 43 taxa of zooplankton (33 taxa of holoplankton and 10 taxa of meroplankton). Total abundance of zooplankton was between 752 and 1050 ind/m3 (average 890±128 ind/m3), which was dominated by Copepods (53.70%). The abundace of the Copepods was between 368 and 742 ind/m3 (average 481±153 ind/m3). Copepods that typically found in coastal water may have higher tolerant on oceanographic factors than one that typically found in oceanic water. Sagitta enflata was identified as the most abundant, followed by Oncaea sp and Acrocalanus gibber. Echinoderms larvae were abundant in the pluteus stage (8 arms) indicated that spawning process occurred in August. The Bray-Curtis clustering analyses showed that in station 4 there were six different species zooplankton indentified in this location.   Keywords: structure community, copepods, meroplankton, chaetoghnata, Morell

Species richness, abundance and vertical distribution of Copepods in Banda Sea, Indonesia

The aims of this research were to investigate the species richness and abundance of Copepods. Copepods were sampled using rosette sampler (surface, 25 m and 75 m) on November 21st – 30th, 2013, from the Banda Sea. A total of 21 taxa of Copepods belonging to three orders were identified. Calanoid was identified as the most richness order, followed by Cyclopoid and Harpacticoid. The highest value of total abundance in the surface water is 121 ind/6L, in the 25 m of depth is 221 ind/6 L, and in the 75 m of depth is 96 ind/6L. Acrocalanus longicornis is the most abundant taxa of Copepods, followed by Acartia bispinosa, and Subeucalanus mucronatus. The most predominant taxa of Acartia bispinosa, and Subeucalanus mucronatus showed a remarkable peak at 25 m layers

Species richness, abundance and vertical distribution of Copepods in Banda Sea, Indonesia

The aims of this research were to investigate the species richness and abundance of Copepods. Copepods were sampled using rosette sampler (surface, 25 m and 75 m) on November 21st – 30th, 2013, from the Banda Sea. A total of 21 taxa of Copepods belonging to three orders were identified. Calanoid was identified as the most richness order, followed by Cyclopoid and Harpacticoid. The highest value of total abundance in the surface water is 121 ind/6L, in the 25 m of depth is 221 ind/6 L, and in the 75 m of depth is 96 ind/6L. Acrocalanus longicornis is the most abundant taxa of Copepods, followed by Acartia bispinosa, and Subeucalanus mucronatus. The most predominant taxa of Acartia bispinosa, and Subeucalanus mucronatus showed a remarkable peak at 25 m layers

Half-Century of Scientific Advancements Since the Cooperative Study of the Kuroshio and Adjacent Regions (CSK) Programme-Need for a new Kuroshio Research

Through the Cooperative Study of the Kuroshio and Adjacent Regions (CSK) program during 1965 & ndash;1979, the capacities of current member states (MSs) of the Sub-Commission for the Western Pacific (WESTPAC) of the Intergovernmental Oceanographic Commission (IOC) were enhanced with regard to regional ocean science and data management. Following the termination of the CSK in 1979, each MS continued the work to advance ocean science. The results of scientific studies of the Kuroshio and its adjacent regions have been published by various experts including many from the MSs of the WESTPAC; however, to-date, there has been no systematic approach to the research of the Kuroshio and its adjacent regions. This review considered the Kuroshio from the regional perspective of experts of the MSs, that is, from the perspectives of MSs, science, and the future prospects. Experts from each MS reviewed past activities and contributions and reviewed the knowledge gaps in the fields of physical, biological, and biogeochemical science. Many scientific questions remain regarding the path of the Kuroshio from south to north, as well as associated phenomena, including mesoscale eddies and fronts, the important roles of ocean variations in adjacent regions, and the different roles and mechanisms of air & ndash;sea interactions in low-and mid-latitude areas. Despite considerable effort by many biologists, substantial gaps remain in our biological knowledge of the region. The Kuroshio and its adjacent regions comprise one of the areas of the world with high biodiversity; however, there has been insufficient research into what is the cause of this high biodiversity. From a biogeochemical aspect, high resolution spatiotemporal observations will be required to understand interactions with physical processes both in the Kuroshio region and in the marginal seas. It has been highlighted that long-term fixed-location observations will be needed to understand the key mechanisms of biogeochemical processes, particularly in relation to climate change. Finally, the report summarized the future perspectives. Based on recognition of the current circumstances and with acknowledgment of the potential short-term future capabilities of MSs, the possible uses of new technologies and frameworks were discussed. Since the implementation of the United Nations Convention on the Law of the Sea, which came into force in 1994, it has been difficult to conduct observations in the exclusive economic zone (EEZ) of other regional states. Thus, new frameworks and/or technologies will be needed to ensure the success of future studies of the Kuroshio