Harmful algal blooms

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Eksplorasi Harmful Algal Blooms (Habs) Dan Hubungannya Dengan Karakteristik Lingkungan Di Perairan Pesisir Sumatera Selatan

Eksplorasi Harmful Algal Blooms (Habs) Dan Hubungannya Dengan Karakteristik Lingkungan Di Perairan Pesisir Sumatera Selatan

Peningkatan penduduk yang terjadi di Sumatera Selatan akan menimbulkan dampak yang tidak kecil pada wilayah pesisir. Data dari BPS Sumatera Selatan (2011) menyatakan bahwa selama kurun waktu 2002-2010 terjadi peningkatan jumlah penduduk di Sumatera Selatan dari 6.430.188 menjadi 7.450.394 orang. Pertambahan penduduk yang cepat ini menyebabkan peningkatan kegiatan di segala sektor, antara lain industri, transportasi, penangkapan maupun budidaya. Dampak dari meningkatnya aktivitas manusia ini akan berakibat pada tingginya limbah yang dihasilkan. Apabila limbah yang dihasilkan tinggi akan memicu pertumbuhan fitoplankton dengan cepat. Apabila hal ini didukung oleh faktor lingkungan lain seperti suhu yang tepat, tersedianya oksigen, dan intensitas cahaya yang sesuai maka ledakan fitoplankton bisa saja terjadi. Ledakan fitoplankton ini dikenal dengan istilah Harmful Algal Blooms (HABs). Hasil studi di perairan Hongkong menunjukkan adanya korelasi positif antara bertambahnya jumlah manusia dengan frekuensi kejadian ledakan blooming alga (Lam and Ho 1989 dalam Hallegraeff 1995).
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HUBUNGAN KUALITAS AIR TERHADAP TERJADINYA HARMFUL ALGAL BLOOMS (HABs) DI LINGKUNGAN KARAMBA JARING APUNG (KJA) PANTAI RINGGUNG

HUBUNGAN KUALITAS AIR TERHADAP TERJADINYA HARMFUL ALGAL BLOOMS (HABs) DI LINGKUNGAN KARAMBA JARING APUNG (KJA) PANTAI RINGGUNG

Meningkatnya pengembangan Karamba Jaring Apung (KJA) di Pantai Ringgung memberikan dampak positif terhadap peningkatan perekonomian masyarakat di sekitar Pantai Ringgung. Namun hal ini juga menimbulkan dampak negatif. Pembangunan KJA di Pantai Ringgung, cenderung mengabaikan menejemen budidaya, akibatnya dapat mempengaruhi keseimbangan lingkungan itu sendiri. Kegiatan budidaya di KJA saat ini, kurang dalam memperhatikan bagaimana pentingnya menejemen dalam pembudidayaan, sehingga perlu ada pengkajian khusus untuk mengetahui hubungan kualitas air terhadap potensi ledakan populasi alga berbahaya (Harmful Algal Blooms).
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Desain Fuzzy Neural Model Prediksi Algal Blooms Di Daerah Tropis

Desain Fuzzy Neural Model Prediksi Algal Blooms Di Daerah Tropis

Ledakan populasi (blooming) mikroalgae tertentu acapkali terjadi di lingkungan perairan dan dapat berdampak positif atau negatif. Ledakan populasi (blooming) mikroalgae tertentu dapat berdampak positif atau negatif. Ledakan populasi dari microalgae yang merugikan dikenal sebagai redtide atau lebih tepat disebut Harmful Algal Blooms ( HABs) (Praseno dan Sugestiningsih, 2000). Selain menimbulkan gangguan pada lingkungan dan kesehatan manusia, HABs juga dapat menimbulkan kerugian ekonomi. Berdasarkan hal tersebut maka perlu dibuatkan sistem peringatan dini algal blooms yaitu sebuah sistem yang dirancang untuk mendeteksi algal blooms kemudian memberikan peringatan kepada masyarakat untuk mencegah jatuhnya korban. Fokus penelitian ini berada pada bagian fuzzy neural processing. Pendekatan fuzzy neural dijadikan pilihan melihat hasil penelitian sebelumnya yaitu penelitian yang berkaitan dengan seleksi aroma (Sakuraba et al, 1994) dan penciuman elektronik untuk penciuman aroma (Budiarto dan kusumoputro,1998.
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Buku Direktori 2014

Buku Direktori 2014

Diversity of the phytoplanktonic species responsible for Harmful Algal Blooms HABs in Indonesia with a special focus on the Alexandrium tamarense complex Tujuan Penelitian Research Ob[r]

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PENGARUH KELIMPAHAN FITOPLANKTON BERBAHAYA (HABs) TERHADAP TINGKAT KEMATIAN IKAN YANG DIBUDIDAYAKAN DI KARAMBA JARING APUNG PANTAI RINGGUNG TELUK LAMPUNG

PENGARUH KELIMPAHAN FITOPLANKTON BERBAHAYA (HABs) TERHADAP TINGKAT KEMATIAN IKAN YANG DIBUDIDAYAKAN DI KARAMBA JARING APUNG PANTAI RINGGUNG TELUK LAMPUNG

Budidaya ikan merupakan kegiatan pemeliharaan ikan dalam lingkungan yang terkontrol. Ada beberapa hal yang harus diperhatikan salah satunya adalah pemberian pakan.Manajemen pemberian pakan yang kurang tepat akan berdampak buruk bagi lingkungan budidaya. Hal ini erat kaitannya dengan akumulasi unsur hara yang masuk ke dalam area budidaya. Selain itu kondisi lingkungan yang sering berubah seiring dengan pemanasan global.Perubahan lingkungan karena alam atauperilaku manusia dapat memicuterjadinya ledakan populasi fitoplankton yang terkenal dengan sebutan“ Harmful Algal Blooms ” (HABs).
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Directory UMM :Data Elmu:jurnal:J-a:Journal of Experimental Marine Biology and Ecology:Vol248.Issue2.May2000:

Directory UMM :Data Elmu:jurnal:J-a:Journal of Experimental Marine Biology and Ecology:Vol248.Issue2.May2000:

Our studies demonstrate that water flow regimes ultimately are very important in setting the frequency of chronic disturbances to algal turfs and thus influencing algal community structure on coral reefs. Water flow regimes directly control physical disturbances when algal turfs are abraded and periodically buried as rubble substratum tumbles in waves and currents, and indirectly influence biological disturbance intensity and frequency. Water motion sweeps seaweeds over algal turfs and restricts the foraging behavior of herbivores. The importance of water flow regimes on coral reefs to date has been documented primarily for individual organisms and their feeding and metabolism (Jokiel, 1978; Andrews et al., 1988; Patterson and Sebens, 1989; Patterson et al., 1991; Helmuth and Sebens, 1993; Genin et al., 1994; Lesser et al., 1994; Fabricius et al., 1995; Williams and Carpenter, 1998). Our findings add to the growing recognition that hydrodynamics are of primary importance in coral reef ecosystems as a whole (Atkinson, 1988, 1992; Andrews and Pickard, 1990; Patterson et al., 1991). For example, water flow regulates the high rates of net primary production and nitrogen fixation in algal turfs (Carpenter et al., 1991; Williams and Carpenter, 1998). Metabolic rates are negatively correlated with boundary layer thickness over the turfs, and boundary layer thickness is reduced as ambient water flow speeds increase and algal canopy heights decrease (Carpenter and Williams, 1993; Williams and Carpenter, 1997, 1998). Physical disturbance and biological disturbance in the form of herbivory (Carpenter, 1986; Williams and Carpenter, 1997) lead to significant reductions in algal canopy height. In addition, water flow indirectly influences the ability of herbivores to crop algal canopies by limiting foraging activity (Lieberman et al., 1979; Foster, 1987). The importance of physical factors in regulating many aspects of coral reef ecosystem function represents a major shift from the paradigm of tight biological control (Odum and Odum, 1955; Muscatine and Porter, 1977; Smith, 1988; Sorokin, 1990). It should come as no surprise that coral reefs thrive in areas of high water flow (Grigg, 1983; Adey and Goertemiller, 1987; Darwin, 1988 (reissue); Hamner and Wolanski, 1988; Hatcher, 1990; Atkinson, 1992).
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William Blake, Blooms Classic Critical Views

William Blake, Blooms Classic Critical Views

Bibliographical Preface to Poems from the “Prophetic Books” in the present section i group together the lyrical poems from the works commonly known as the ‘Prophetic Books.’ This name, [r]

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Isolation of AHL-degrading bacteria from micro-algal cultures and their impact on algal growth and on virulence of Vibrio campbellii to prawn larvae.

Isolation of AHL-degrading bacteria from micro-algal cultures and their impact on algal growth and on virulence of Vibrio campbellii to prawn larvae.

Abstract Inactivation of quorum sensing (QS) signal mole- cules, such as acylhomoserine lactones (AHLs) of pathogenic bacteria, has been proposed as a novel method to combat bacterial diseases in aquaculture. Despite the importance of micro-algae for aquaculture, AHL degradation by bacteria as- sociated with micro-algal cultures has thus far not been inves- tigated. In this study, we isolated Pseudomonas sp. NFMI-T and Bacillus sp. NFMI-C from open cultures of the micro- algae Tetraselmis suecica and Chaetoceros muelleri, respec- tively. An AHL degradation assay showed that either mono- cultures or co-cultures of the isolates were able to degrade the AHL N-hexanoyl- L -homoserine lactone. In contrast, only
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Samuel Beckett Blooms Modern Critical Views

Samuel Beckett Blooms Modern Critical Views

Ironic Samuel Beckett: Samuel Beckett’s Life and Drama: Waiting for Godot, Endgame, and Happy Days.. Saying I No More: Subjectivity and Consciousness in the Prose of Samuel Beckett.[r]

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Index of /papers/Health_Fitness Is Eye Sty Harmful

Index of /papers/Health_Fitness Is Eye Sty Harmful

The medical term for sty is hordeolumsay HOR-dee-oh-lumm and it is an infection caused by bacteria that normally live peacefully on the eyelid skin surface.. Some of thee germs get trapp[r]

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Robert Browning Blooms Classic Critical Views

Robert Browning Blooms Classic Critical Views

Human life is relative to Browning, and individuals are capable of developing their souls in ways specific to their character, station, and situation; indeed, Woodberry suggests that in [r]

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Margaret Atwood Blooms Modern Critical Views

Margaret Atwood Blooms Modern Critical Views

With their altered ancient primate brains, the Crakers lack the destruc- tive features of racism, hierarchy and territoriality, and because they regularly come into heat, like most other mammals, their sexuality is “not a constant torment to them, not a cloud of turbulent hormones” (p. 305). Instead, when the female comes into heat, the bright-blue colour of her abdomen and the pheromones released by the blue tissue stimulate the males, turning their penises a matching bright blue, and they “do a sort of blue-dick dance num- ber, erect members waving to and fro in unison”; then, when the female’s abdomen reaches its darkest shade, she and a chosen quartet of males “go at it” until she becomes pregnant and “that is that” (p. 165). Perfectly adapted to their habitat, they will never have to build houses or develop tools and weapons or create “harmful symbolisms, such as kingdoms, icons, gods, or money” (p. 305). Crake, who maintains that “God is a cluster of neurons,” at- tempts to remove the “G-spot in the brain” (p. 157) and to deprogramme out of the Crakers questions about their own origins. And he tries to eliminate art, believing that symbolic thinking would lead to the downfall of his homi- nids. “Next they’d be inventing idols, and funerals, and grave goods, and the afterlife, and sin, and Linear B, and kings, and then slavery and war,” in his view (p. 361). While they are hardwired for dreaming and singing, related as- pects Crake could not get rid of, they are plain-spoken: “[T]hese people didn’t go in for fancy language: they hadn’t been taught evasion, euphemism, lily- gilding” (p. 348). If the Crakers are the “living results” of Crake’s theories (p. 236), they are also like an embodied boy-genius joke, and indeed, Crake, even as he plans to wipe out human history, names them after famous historical figures—Abraham Lincoln, Leonardo da Vinci, Madame Curie, Sojourner Truth, Simone de Beauvoir—because it amuses him. While Atwood’s meth- od in presenting the Crakers is satirical—indeed, her descriptions of them read as a kind of over-the-top spoof of the ongoing project of bioengineering as she represents them as a kind of postmodern transgenic pastiche—she also is intent on sounding a warning about the potential baneful effects of gene manipulation. Unlike those who insist that science is nothing more than a social construction, Atwood emphasizes the growing, and potentially lethal, power of scientists to manipulate and alter human biology—and reality.
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Oscar Wilde    Blooms Classic Critical Views

Oscar Wilde Blooms Classic Critical Views

In this extract written for the Times Literary Supplement, Lucas reviews Wilde’s De Profundis, the long letter composed by Wilde, while he was in prison, for Alfred Douglas, and publishe[r]

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Did you know that excess Salt is Harmful

Did you know that excess Salt is Harmful

In fact, three-quarters of the salt in our diets comes from processed foods, with just 10 per cent coming from the salt we add during cooking or at the table, and the remaining 15 per ce[r]

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Wallace Stevens Blooms Major Poets

Wallace Stevens Blooms Major Poets

Nearly every critic who has written about “The Course of a Particular” has noted the ideas and stylistic moves it shares with Stevens’ earlier and more often anthologized poem, “The Snow[r]

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Homer    Blooms Modern Critical Views

Homer Blooms Modern Critical Views

The epic tradition of the Trojan War, which gradually crystallized into the Homeric poems as we know them, accompanied this civilization through all the stages of its existence, thus ful[r]

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A Revision of Blooms Taxonomy

A Revision of Blooms Taxonomy

Table 1 Structure of the Original Taxonomy 1.0 Knowledge 1.10 Knowledge of specifics 1.11 Knowledge of terminology 1.12 Knowledge of specific facts 1.20 Knowledge of ways and means [r]

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Directory UMM :Data Elmu:jurnal:A:Aquaculture:Vol182.Issue3-4.Feb2000:

Directory UMM :Data Elmu:jurnal:A:Aquaculture:Vol182.Issue3-4.Feb2000:

intensity: no nutrient limitation fr2 , phosphorus P and nitrogen N limitation. The phosphorus-limited medium and nitrogen-limited medium were prepared by adding a quarter of the amount of the respective salt. The density of the cultures was determined twice daily and adjustments to the flow rate were made on a daily basis to keep the cell density constant. Typically, the cultures were maintained in the selected cell density " 10% throughout the feeding trials. The collector flasks were emptied regularly and algae, which were to be used either as food or for samples for cell density determination and for the subsequent biochemical analyses, were left to stand for no more than 3 h in that vessel. The algae used in the control diet were cultured in 20 l glass round flasks at a light intensity of 715–827 kphotons s y1 m y2 using a semi-continuous batch culturing system and Conway medium under constant illumination. All cultures were maintained in uni-algal condition. Chemical and biochemical methods and techniques are described
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Coral–algal phase shifts on coral reefs: ecological and environmental aspects

Coral–algal phase shifts on coral reefs: ecological and environmental aspects

This paper briefly reviews coral–algal phase shifts on coral reefs, with particular regard to summarizing the exog- enous and endogenous factors in support of a proposed conceptual model, and to identifying critical information gaps. A phase shift occurs on a coral reef when the cover of a substrate by scleractinian corals is reduced in favor of mac- roalgal dominance, and resilience of the former condition is retarded because of ecological processes and/or environ- mental conditions. The change is often, but not always, associated with a perturbation such as coral bleaching, outbreaks of a coral-eating species, or storm damage. The new state is generally associated with some combination of reduced herbivory (from disease and/or fishing) and nutrient enrichment, although the relative importance of these factors is under debate and may vary among locations and even across single reefs. Disturbances that result in a state of generally low biotic three-dimensional structural complexity often precede a phase shift. Following such a disturbance, the system will pass to a state of higher biotic structural complexity, with either macroalgae or coral dominating. As the community progresses towards larger and more three-dimensionally complex corals or macroalgae, it exhibits greater resistance to shifting dominance from one state to the other. Studies of the phase-shift phenomena have been generally conducted at scales that are small relative to the sizes and inherent variability of whole coral reefs and systems of reefs. There is an urgent need for studies aimed at quantifying and simulating cause and effect aspects of the phase shift, including human–environment coupling, particularly in support of coral reef decision-making.
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Marianne Moore Comprehensive Research and Study Guide Blooms Major Poets

Marianne Moore Comprehensive Research and Study Guide Blooms Major Poets

Marianne Moore: Questions of Authority Cambridge: Harvard University Press, 1995: 118–119.. HEATHERCASSWHITE ONMOORE’SDEFINITION OF CONVERSATION [Heather Cass White is an Assistant Pr[r]

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