Dugaan Upwelling Berdasarkan Analisis Komparatif Citra Sebaran Suhu Permukaan Laut Dan Klorofil-a Di Teluk Tomini

Amri, Khairul; Suwarso, Suwarso; Herlisman, Herlisman

doi:10.15578/jppi.11.6.2005.57-71

Cited by 4 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to Burhanuddin et al (2004), in the waters of Tomini Bay, indications of upwelling areas often occur around Tomini Bay, the Togean Islands, and south of Gorontalo. This is also following the results of an upwelling study in Tomini Bay conducted by Amri et al (2005), where the upwelling phenomenon occurs in the east season (July-August), which is marked by a sharp increase in chlorophyll-a concentrations between 0.8 -1.25 mg.m-3 . According to Amri et al, (2005), this upwelling phenomenon occurs due to the movement of the northern lower water mass at a depth of 150 m which forces the Maluku Sea water mass at the mouth of Tomini Bay (the location where the Botubarani whale shark appears) to collide with the shelf area, thus triggering an increase in the water mass from the inside to the surface.…”

Section: Resultssupporting

confidence: 86%

“…In remote sensing, chlorophyll-variables are observed as a proxy for phytoplankton models because phytoplankton abundance is often linked to chlorophyll-to explain the emergence and movement of marine animals, including planktivorous Elasmobranchii such as whale sharks (Rohner et al, 2013). Observations of chlorophyll-a concentrations in Botubarani waters and the surrounding sea are slightly different from the results of previous research conducted by Amri et al, (2005Amri et al, ( ) in 2003Amri et al, ( -2004 in Tomini Bay, where the chlorophyll-a content values ranged between 0.32-1.25 mg.m -3 . Compared with the results of research at other whale shark emergence locations such as in Probolinggo (Sakuntala et al, 2016) and Panama, Eastern Pacific Ocean (Guzman et al, 2022), the chlorophyll-a concentration value in Botubarani is not much different from research results in these two locations.…”

Section: Resultsmentioning

confidence: 75%

See 1 more Smart Citation

Seasonal Constellation of Juvenile Whale Sharks in Gorontalo Bay Coastal Park

Yasir,

Hartati,

Indrayanti

et al. 2024

Indo. J. Mar. Sci.

View full text Add to dashboard Cite

The whale shark (Rhincodon typus Smith, 1828) is the largest extant fish species in the world, and it is endangered, with population numbers declining in the last three decades. The appearance of whale sharks in the Botubarani Waters has attracted a lot of attention. Therefore, this study aimed to determine the whale shark's appearance, their habitat constellation pattern, and its oceanographic conditions. This research was conducted during the 2019-2022 period. The Photographic Identification (Photo-ID) method is used to observe and determine whale shark individual's number and pattern of presence. Oceanographic data includes chlorophyll-a concentration using Ocean Color Image (CCI) data and sea surface temperature (SST) using OSTIA image data processed with Interactive Data Language (IDL) software. The research showed there are 38 individuals with an estimated total length ranging from 2.3 to 7.3 meters. All whale sharks appearing in Botubarani include juvenile male individuals with a composition of 53% new individuals (N=20) and 47% (N=18) old individuals seen again with a rare seasonal and sporadic presence pattern mainly in the Eastern season (June). The average SST value during the study period ranged from 28.36-30.29⁰C while chlorophyll-a ranged from 0.174-0.698 mg.m-3. Although the present findings show that the whale shark's appearance in Botubarani waters was not significantly influenced by SST and chlorophyll-a, it might be affected by other oceanography factors such as Sea Surface Height Distribution (SSHD) and depth (Bathymetry). As the Botubarani aggregation site is the only whale shark emergence area with easy access throughout the year and is rapidly developing into a new ecotourism industry in Indonesia; the information on whale shark appearance provides useful support for the sustainable protection and Whale Sharks conservation in the future.

show abstract

Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 75%

Seasonal Constellation of Juvenile Whale Sharks in Gorontalo Bay Coastal Park

Yasir,

Hartati,

Indrayanti

et al. 2024

Indo. J. Mar. Sci.

View full text Add to dashboard Cite

show abstract

“…Sebaran fitoplankton dengan kelimpahan tinggi (15.000 -25.000 sel/m 3 ) cenderung mengumpul di mulut Teluk Tomini seperti pada musim timur namun dengan kelimpahan juga lebih tinggi. Hal ini berbeda dengan temuan-temuan sebelumnya dimana produktivitas tertinggi biasanya terjadi pada musim timur dan menurun pada musim barat yang diduga karena adanya fenomena upwelling (Awwaludin et al, 2005;Amri et al, 2005;Surinati, 2009). Pada tahun 2010, hujan hampir terjadi sepanjang tahun (fenomena LaNina), sehingga input nutrient yang diakibatkan oleh curah hujan yang tinggi dan lama dibandingkan tahuntahun sebelumnya (66 -103 mm) (Ilahude, 2011) akan menyebabkan perairan menjadi subur dan membuat populasi fitoplankton juga meningkat.…”

Section: Fitoplanktonunclassified

Distribusi Spasialdantemporalplankton Di Perairanteluktomini, Sulawesi

Setyadji¹,

Priatna²

2017

BAWAL Widya Riset Perikanan Tangkap

View full text Add to dashboard Cite

ABSTRAKPlankton merupakan komponen penting dalam kehidupan akuatik karena fungsi biologisnya yang penting sebagai mata rantai paling dasar dalam rantai makanan dan merupakan organisme yang menduduki kunci utama di dalam ekosistem bahari. Penelitian ini dilakukan pada bulan Mei, Juli, dan Nopember 2010 yang mewakili musim peralihan I, musim timur dan musim barat dengan tujuan mengetahui distribusi-kelimpahan spasial dan temporal fitoplankton dan zooplankton di Teluk Tomini. Kelimpahan fitoplankton dan zooplankton tertinggi terdapat pada musim barat sebesar 177.666 sel/m 3 dan 7.088 ind/m 3 , sedangkan terendah pada musim timur sebesar 4.878 sel/m 3 dan 1.118 ind/ m 3 . Tingkat indek keaneka-ragaman (H) baik fitoplankton dan zooplankton sedang, indek keseragaman (E) rendah hingga sedang, dan tidak ditemukan jenis tertentu yang dominan. Chaetoceros, Coscinodiscus, dan Rhizosolenia dari kelas Bacillariophyceae merupakan fitoplankton yang mempunyai frekuensi kehadiran yang tinggi, sedangkan Crustaceae merupakan zooplankton yang dominan. Konsentrasi sebaran terdapat di mulut teluk dan tersebar relatif sesuai dengan musim.KATA KUNCI: fitoplankton, zooplankton, kelimpahan, distribusi, spasial, temporal, Teluk Tomini ABSTRACT:Spatial and temporal distribution of plankton in Tomini Bay, Sulawesi. By : Bram Setyadji and Asep Priatna.Plankton plays important role in aquatic life due to its significant biological function as basic food chain in oceanic ecosystem. This study was conducted on May, July, and November representing north-west monsoon, east monsoon, and west monsoon, respectively. The purposed of this study is to know the spatial and temporal distribution and the abundance of phytoplankton and zooplankton in Tomini Bay. Results showed that the highest abundance of phytoplankton and zooplankton were 177.667 cell/m 3 and 7.088 ind/m 3 that appeared at north-west monsoon, while the lowest were 4.878 cell/m 3 and 1.118 ind/m 3 that shown in south-east monsoon. The diversity index (H) for both Phytoplankton and Zooplankton were in medium (1

show abstract

“…The Togean Islands are a very unique landscape with more than 60 reef islands, located in a semienclosed gulf [1] in the middle of the deep waters of Tomini Gulf, between the Tomini Basin and Gorontalo Basin [2], the depth range of the waters were from shallow neritic zones through 3000 meters [3]. Shallow waters in Tomini Gulf are located around reef islands and at the coast of the main island (Sulawesi).…”

Section: Introductionmentioning

confidence: 99%

The offshore Foraminifera of the Togean Islands, Tomini Gulf; distribution and ecological significance

Rositasari¹,

Witasari²,

Wibowo³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

The hydrological complexity, the gulf shape, and the undeveloped geological setting of the Togean Islands in the middle of the waters assembled the area to be such an interesting place to discover its ecological uniqueness. Foraminifera was widely used as proxies for various ecological aspects. Real time and retrospective studies of the vertical and horizontal distribution of foraminiferal communities on such waters are the reflection of many ecological factors in the area. The purpose of the Foraminiferal research on the offshore Togean Islands is to discover the ecological roles that directly and indirectly affect the characteristics of the vertical and horizontal distribution. The study was also referring various ecological aspects from previous studies at the research site. Sampling was carried out in September 2015 using the Baruna Jaya VIII RV in the Togean Islands waters, Tomini Gulf, through a gravity core. Foraminifera analysis was carried out at four core samples from the adjacent waters of four reef islands; Una-una, Pengempang, Togean, and Kalla at 5 m to 455 m water depths. Core samples of various lengths, from 8 cm to 34 cm were dominated by planktonic foraminifera. The dominance of planktonic taxa in reef waters indicates a robust oceanic influence to the reef islands. Upwelling events in several locations in the region as well as volcanic processes that are ongoing also play a role in the distribution of the bulk of planktonic taxa in the reef waters of Togean Islands.

show abstract

Dugaan Upwelling Berdasarkan Analisis Komparatif Citra Sebaran Suhu Permukaan Laut Dan Klorofil-a Di Teluk Tomini

Abstract: Penelitian dugaan upwelling di perairan Teluk Tomini berdasarkan pada analisis komparatif citra satelit telah dilakukan pada 2003 sampai dengan 2004.

Cited by 4 publications

References 0 publications

Seasonal Constellation of Juvenile Whale Sharks in Gorontalo Bay Coastal Park

Seasonal Constellation of Juvenile Whale Sharks in Gorontalo Bay Coastal Park

Distribusi Spasialdantemporalplankton Di Perairanteluktomini, Sulawesi

The offshore Foraminifera of the Togean Islands, Tomini Gulf; distribution and ecological significance

Contact Info

Product

Resources

About