GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Online Resource
    Online Resource
    Harmful Algae in Indonesia: Small in Size, Big in Effect
    Frontiers Media SA ; 2023
    In:  Frontiers for Young Minds Vol. 11 ( 2023-2-24)
    Details
    In: Frontiers for Young Minds, Frontiers Media SA, Vol. 11 ( 2023-2-24)
    Abstract: Sometimes the waters of seas, rivers, or lakes turn an odd color, becoming brown, red, or green. These colors are actually those of tiny algae that are invisible to the naked eye—but those algae are reproducing so fast that they stain the water. These events are called algal blooms, and they can be harmful because they produce toxins that kill aquatic animals and can cause poisoning in humans. Our group investigated the harmful algal blooms that have been occurring regularly in Lampung Bay, Indonesia, since 2012. We tracked down the algal species responsible for these blooms by analyzing seawater and the seabed sediments of the bay. We identified one species of algae, a dinoflagellate called Margalefidinium polykrikoides , as the culprit. This species can take on multiple shapes, which makes its identification particularly difficult. Improving our knowledge about this algal species will eventually help us understand what triggers harmful algal blooms and how to prevent them.
    Type of Medium: Online Resource
    ISSN: 2296-6846
    URL: Article
    DOI: 10.3389/frym.2023.858326
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2023
    detail.hit.zdb_id: 2742758-4
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Table_1.DOCX
    Frontiers Media SA ; 2019
    In:  Frontiers in Microbiology Vol. 10 ( 2019-2-21)
    Details
    In: Frontiers in Microbiology, Frontiers Media SA, Vol. 10 ( 2019-2-21)
    Type of Medium: Online Resource
    ISSN: 1664-302X
    URL: Article
    URL: Article
    DOI: 10.3389/fmicb.2019.00306
    DOI: 10.3389/fmicb.2019.00306.s001
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2019
    detail.hit.zdb_id: 2587354-4
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    ORGANIC MATTER AND NUTRIENT PROFILE OF THE TWO-CURRENT-REGULATED-ZONE IN THE SOUTHWESTERN SUMATRAN WATERS (SSW)
    National Research and Innovation Agency ; 2017
    In:  Marine Research in Indonesia Vol. 42, No. 1 ( 2017-03-31), p. 19-35
    Details
    In: Marine Research in Indonesia, National Research and Innovation Agency, Vol. 42, No. 1 ( 2017-03-31), p. 19-35
    Abstract: The Indian Ocean is influenced by monsoon systems which alter the ocean’s physical and chemical properties. Specifically, the southwestern Sumatran waters in the eastern Indian Ocean are considered a dual current regulated zone i.e. affected by South Equatorial Counter Current (SECC) and South Java Current (SJC). This area is considered as having an important role in the transfer of organic matter or the biological pump. However, the information about this area is minimal, especially in terms of organic matter and nutrient profile. This study will update the recent information about the area, including the profile of particulate organic matter (POM), macro-nutrients, total suspended solids (TSS), macromolecule-degradingbacteria, and soft bottom macrobenthic organisms sampled from 26 stations in both the SECC-regulated zone and the SJC-regulated zone. The physical profile is typical of tropical watersand both zones have a distinct profile of organic matter and nutrients. The particulate organic carbon (POC), particulate organic nitrogen (PON), and TSS of the SECC-regulated zone can be considered higher than those of the SJC-regulated zone. This region is categorized as mesotrophic waters, especially from the surface up to 100 m. The production of nutrients and organic matter in the water column in this area contribute significantly to the abundance of heterotrophic bacteria and benthic organisms.
    Type of Medium: Online Resource
    ISSN: 2443-2008 , 0216-2873
    URL: Article
    DOI: 10.14203/mri.v42i1.124
    Language: Unknown
    Publisher: National Research and Innovation Agency
    Publication Date: 2017
    detail.hit.zdb_id: 964735-1
    detail.hit.zdb_id: 3143412-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 4
    Online Resource
    Online Resource
    Implication of Monitoring and Evaluation of School Quality
    STIT Palapa Nusantara Lombok NTB ; 2023
    In:  PALAPA Vol. 11, No. 1 ( 2023-05-01), p. 381-390
    Details
    In: PALAPA, STIT Palapa Nusantara Lombok NTB, Vol. 11, No. 1 ( 2023-05-01), p. 381-390
    Abstract: The quality of education is a benchmark for parents to choose their child's school, so it requires regular monitoring and evaluation. This study aims to analyze the implications of monitoring and evaluation of school quality. The background of this research took place at One Roof Junior High School 4, STU Jehe, Pakpak Bharat Regency. The approach used in this research is a qualitative approach and the type of research is field research. Collecting data in this study using interviews, observation and documentation. Data analysis used is data reduction technique, data presentation, conclusion and verification. The results of this study concluded that supervision activities using individual and group techniques as a result of monitoring and evaluation have succeeded in improving the quality of education. Then supervision activities include monitoring, coaching, guidance and training, as well as assessments which greatly impact the implications of monitoring and evaluating school quality improvement. Supporting factors in the form of cooperation and mutual support are one of the keys to successful implementation.
    Type of Medium: Online Resource
    ISSN: 2540-9697 , 2338-2325
    URL: Issue
    URL: Article
    DOI: 10.36088/palapa.v11i1
    DOI: 10.36088/palapa.v11i1.3240
    Language: Unknown
    Publisher: STIT Palapa Nusantara Lombok NTB
    Publication Date: 2023
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 5
    Online Resource
    Online Resource
    The Connectivity of Nutrient Ratios on The Abundance of Phytoplankton Population In Jakarta Bay
    EDP Sciences ; 2020
    In:  E3S Web of Conferences Vol. 147 ( 2020), p. 02012-
    Details
    In: E3S Web of Conferences, EDP Sciences, Vol. 147 ( 2020), p. 02012-
    Abstract: The frequency of algal bloom’s event has been increased in Jakarta Bay, recently. Most of the bloom events were tend to be reoccurred after the rainy season. The research was conducted from 2008 until 2015 to study the linkage of nutrients and the ratios on the growth of the phytoplankton population. Collecting samples were conducted using a canonical plankton net of 20 µm mesh size, 125 cm length and 30 cm diameter of the opening mouth. The results of the study showed that the concentration of phosphate in the waters ranged from 0.01-12.5 µg/l (average 4.58 µg/l) and nitrate ranged from 0.01-15.89 µg/l (average 0.72 µg/l). The N/P ratio during the study ranging from 0.2 up to 45.4. High ratios of nutrients were mostly recorded in 2010 where the overall abundance of phytoplankton is very high. There is a strong correlation of N/P ratio with the community structure or composition of the phytoplankton population. The variability of phytoplankton abundance appears to be related to nutrient ratios of nitrate and phosphate.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    URL: Article
    DOI: 10.1051/e3sconf/202014702012
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2020
    detail.hit.zdb_id: 2755680-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 6
    Online Resource
    Online Resource
    Mass Mortality of Fish in Lampung Bay, Indonesia
    Universitas Jenderal Soedirman ; 2016
    In:  Omni-Akuatika Vol. 12, No. 1 ( 2016-05-01)
    Details
    In: Omni-Akuatika, Universitas Jenderal Soedirman, Vol. 12, No. 1 ( 2016-05-01)
    Abstract: The surface waters in Lampung Bay appeared with dark reddish brown color from the beginning of October until November 2012 due to a bloom, an explosion in the phytoplankton population. This event resulted in the mass mortality of fishes that are cultured in floating nets there. Other smaller and less frequent blooms occurred in the bay the next year. This algal bloom was caused by the dinoflagellate species Cochlodinium polykrikoides. This was thought to be the first bloom of Coclodinium in these waters, or any in Indonesian waters. The highest abundance of Cochlodinium during the incident reached to 3.07 x 107 cells.l-1. Mass fish mortality in the floating nets was due to oxygen depletion, mainly during the night time. The clogging of their gills by dense phytoplankton cells was assumed to be the cause. The population explosion of Cochlodinium was triggered by a high ratio of nitrate and phosphate concentration in the waters. The nutrient ratios of N/P in the water were high, indicating nitrate as a triggering factor and phosphate as a limiting factor.Keywords: algal bloom, Cochlodinium, discoloration, fish mortalities, Lampung Bay
    Type of Medium: Online Resource
    ISSN: 2476-9347 , 1858-3873
    URL: Article
    DOI: 10.20884/1.oa.2016.12.1.27
    Language: Unknown
    Publisher: Universitas Jenderal Soedirman
    Publication Date: 2016
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 7
    Online Resource
    Online Resource
    Mass Mortality of Fish in Lampung Bay, Indonesia
    Universitas Jenderal Soedirman ; 2016
    In:  Omni-Akuatika Vol. 12, No. 2 ( 2016-11-01)
    Details
    In: Omni-Akuatika, Universitas Jenderal Soedirman, Vol. 12, No. 2 ( 2016-11-01)
    Abstract: The surface waters in Lampung Bay appeared with dark reddish brown color from the beginning of October until November 2012 due to a bloom, an explosion in the phytoplankton population. This event resulted in the mass mortality of fishes that are cultured in floating nets there. Other smaller and less frequent blooms occurred in the bay the next year. This algal bloom was caused by the dinoflagellate species Cochlodinium polykrikoides. This was thought to be the first bloom of Coclodinium in these waters, or any in Indonesian waters. The highest abundance of Cochlodinium during the incident reached to 3.07 x 107 cells.l-1. Mass fish mortality in the floating nets was due to oxygen depletion, mainly during the night time. The clogging of their gills by dense phytoplankton cells was assumed to be the cause. The population explosion of Cochlodinium was triggered by a high ratio of nitrate and phosphate concentration in the waters. The nutrient ratios of N/P in the water were high, indicating nitrate as a triggering factor and phosphate as a limiting factor.Keywords: algal bloom, Cochlodinium, discoloration, fish mortalities, Lampung Bay
    Type of Medium: Online Resource
    ISSN: 2476-9347 , 1858-3873
    URL: Article
    DOI: 10.20884/1.oa.2016.12.2.95
    Language: Unknown
    Publisher: Universitas Jenderal Soedirman
    Publication Date: 2016
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 8
    Online Resource
    Online Resource
    PUBLIC AWARENESS ON HARMFUL ALGAL BLOOM (HAB) IN LAMPUNG BAY
    National Research and Innovation Agency ; 2015
    In:  Marine Research in Indonesia Vol. 38, No. 2 ( 2015-04-07), p. 71-75
    Details
    In: Marine Research in Indonesia, National Research and Innovation Agency, Vol. 38, No. 2 ( 2015-04-07), p. 71-75
    Abstract: Harmful algal blooms (HABs) cause various problems, such as water quality degradation, fauna mass mortality and impairment of human health. Water quality monitoring in Lampung Bay has been conducted by Lampung Marine Aquaculture Office (BBL) of the Ministry of Marine Affairs and Fisheries since 1994. Occurrence of Pyrodinium bahamense var. compressum (Pbc), a causative organism of paralytic shellfish poisoning (PSP), has been recorded but threats caused by HABs have never been reported. A study aimed to know the level of public knowledge and awareness about HABs in Lampung Bay has been conducted. The components of group respondents consisted oflocal governments, academics and coastal communities. Awareness from each component was examined includinggeneral HAB knowledge, HAB impact to the community, HAB occurence and local knowledge of HAB. Data of HAB knowledge were collected through questionnaire and focus group  discussion. The result showed that 40.5% of respondents had knowledge of HABs phenomena and 51.3% respondents only know signs or indicators of HAB occurrence, while only 1.4% respondents had knowledge of local HAB occurences. The direct impact of HABs to the community was not commonly known by the respondents. Only a few cases of poisoning after eating seafood were reported. It can be concluded that there was lack of public knowledge and awareness on HABs in LampungBay. Intensive public awareness programs about HABs should be conducted in order to reduce risk towards HABs in Lampung Bay.
    Type of Medium: Online Resource
    ISSN: 2443-2008 , 0216-2873
    URL: Article
    DOI: 10.14203/mri.v38i2.58
    Language: Unknown
    Publisher: National Research and Innovation Agency
    Publication Date: 2015
    detail.hit.zdb_id: 964735-1
    detail.hit.zdb_id: 3143412-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 9
    Online Resource
    Online Resource
    The abundance of phytoplankton and its relationship to the N/P ratio in Jakarta Bay, Indonesia
    UNS Solo ; 2016
    In:  Biodiversitas Journal of Biological Diversity Vol. 17, No. 2 ( 2016-08-22)
    Details
    In: Biodiversitas Journal of Biological Diversity, UNS Solo, Vol. 17, No. 2 ( 2016-08-22)
    Abstract: Sidabutar T, Bengen DG, Wouthuyzen S, Partono T. 2016. The abundance of phytoplankton and its relationship to the N/P ratio in Jakarta Bay, Indonesia. Biodiversitas 17: 673-678. The occurrence of phytoplankton blooms in Jakarta Bay has increased significantly, and resulted in, the mass mortality of fish and other organisms. Phytoplankton bloom events are indicated by a change in the color of the sea’s surface. Generally, phytoplankton growth is influenced by the levels of nutrients in the water, while spatial distribution is influenced by the pattern of the current. In connection with this phenomenon, research was conducted in 2010, 2011 and 2013, to determine the abundance and distribution of phytoplankton and their connection with the N/P ratio. The results showed that the abundance of phytoplankton ranged from 40x106 cells/m3 up to 1699.1x106 cells/m3, with the highest recorded data was during the east monsoon in 2010 and the lowest during the first transition period of 2011. The predominant phytoplanktons were frequently diatoms such as Skeletonema, Chaetoceros and Thalassiosira. The distribution of phytoplankton seemingly follows the nutrient concentration ratio where phosphate acted as the limiting factor and nitrogen as the triggering factor. The higher the N/P ratio, the more potentially uncontrolled growth of phytoplankton occurred. When the availability of nutrients increased an increase in total algal biomass occurred, however, the alteration in nutrient composition led to a change in composition of community.
    Type of Medium: Online Resource
    ISSN: 2085-4722 , 1412-033X
    URL: Article
    DOI: 10.13057/biodiv/d170241
    Language: Unknown
    Publisher: UNS Solo
    Publication Date: 2016
    detail.hit.zdb_id: 2660049-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...