scholarly journals Seaweed resources of the Hawaiian Islands

2019 ◽  
Vol 62 (5) ◽  
pp. 443-462
Author(s):  
Karla J. McDermid ◽  
Keelee J. Martin ◽  
Maria C. Haws
Keyword(s):  
Marine Ecosystem ◽  
Hawaiian Islands ◽  
Algal Species ◽  
Cultural Knowledge ◽  
Native Populations ◽  
Critical Components ◽  
Many Sources ◽  
Marine Flora ◽  
First Time ◽  
Collaborative Efforts

Abstract Up-to-date information about the unique marine flora of the Hawaiian Islands – its environment, uses, cultivation, conservation, and threats – comes from many sources, and is compiled here for the first time. The seaweed resources of the Hawaiian Islands are taxonomically diverse, biogeographically intriguing, ecologically complex, culturally significant, and economically valuable. Macroalgae, historically and today, are critical components of the marine ecosystem, as well as the diet and culture of people living in the islands. Some Hawaiian seaweeds are known to contain valuable bioactive compounds that have potential medical and pharmaceutical applications. Cultivation of Hawaiian seaweeds is carried out in tanks, ponds, and along the shoreline, both commercially and by “back-yard” farmers. Several community groups are actively working to preserve cultural knowledge, to re-plant the reefs, and to remove invasive algal species. The seaweed resources of Hawaiʻi are cherished, but are at risk. The future of seaweed cultivation, maintenance and revitalization of native populations, and preservation of cultural knowledge relies on the collaborative efforts of all stakeholders.

scholarly journals A review of cephalopods (Phylum: Mollusca) of the Canary Current Large Marine Ecosystem (Central-East Atlantic, African coast)

2021 ◽  
pp. 1-25
Author(s):  
Amanda Luna ◽  
Francisco Rocha ◽  
Catalina Perales-Raya
Keyword(s):  
North Atlantic ◽  
Atlantic Coast ◽  
Marine Ecosystem ◽  
Western Sahara ◽  
Guinea Bissau ◽  
Distribution Ranges ◽  
Large Marine Ecosystem ◽  
Sepiola Atlantica ◽  
First Time ◽  
Subsequent Identification

Abstract An extensive review of cephalopod fauna in the Central and North Atlantic coast of Africa was performed based on material collected during 10 research cruises in these waters. In the Canary Current Large Marine Ecosystem (CCLME) area, a total of 378,377 cephalopod specimens was collected from 1247 bottom trawl stations. Of those specimens, 300 were sampled for subsequent identification in the laboratory and found to belong to 65 different species and 23 families. After an exhaustive review of the existing literature on the cephalopods and new data obtained from the surveys, an updated checklist of 138 species was generated for the CCLME area. Our knowledge of the known geographic distribution ranges of several species has been expanded: Muusoctopus januarii has been sighted from Guinea–Bissau waters, passing through Western Sahara, to Morocco waters for the first time; Lepidoteuthis grimaldii and Octopus salutii have been sighted off Morocco waters for the first time; Austrorossia mastigophora, Abralia (Heterabralia) siedleckyi, Abralia (Pygmabralia) redfieldi and Sepiola atlantica have been cited off Western Sahara waters for the first time; Magnoteuthis magna, Abralia (Asteroteuthis) veranyi and Octopoteuthis megaptera have been sighted off Moroccan and Western Sahara waters for the first time; Ancistroteuthis lichtensteinii, Opisthoteuthis grimaldii, Onykia robsoni, Muusoctopus levis and Bathypolypus valdiviae have been cited in the Guinea–Bissau coast for the first time; the northern geographic limit of Bathypolypus ergasticus has been expanded to Morocco, Western Sahara and Mauritania and southward to Guinea–Bissau waters. The presence of Muusoctopus johnsonianus in Senegalese waters has been reported for the first time. A Chtenopteryx sicula specimen was reported in Western Sahara waters. A specimen belonging to the poorly known Cirrothauma murrayi species was found in South Moroccan waters. Amphitretus pelagicus, a probably cosmopolitan species, has been reported in the Western Sahara and Guinea–Bissau waters. Some species that were previously recorded in the area, Sepia angulata, Sepia hieronis, Heteroteuthis dagamensis, Helicocranchia joubini and Tremoctopus gelatus, were removed from the final checklist and considered to be not present in the CCLME area. Cycloteuthis akimushkini was substituted with Cycloteuthis sirventi, its senior synonym, in the final checklist. Similarly, Mastigoteuthis flammea and Mastigoteuthis grimaldii were substituted with Mastigoteuthis agassizii.

scholarly journals Bearing Severity Fault Evaluation Using Contour Maps—Case Study

2021 ◽  
Vol 11 (14) ◽  
pp. 6452
Author(s):  
César Ricardo Soto-Ocampo ◽  
Juan David Cano-Moreno ◽  
José Manuel Mera ◽  
Joaquín Maroto
Keyword(s):  
Health Indicators ◽  
Bearing Faults ◽  
Contour Maps ◽  
Initial Stage ◽  
Critical Components ◽  
Bearing Damage ◽  
First Time ◽  
Current Operating

Increasing industrial competitiveness has led to an increased global interest in condition monitoring. In this sector, rotating machinery plays an important role, where the bearing is one of the most critical components. Many vibration-based signal treatments are already being used to identify features associated with bearing faults. The information embedded in such features are employed in the construction of health indicators, which allow for evaluation of the current operating status of the machine. In this work, the use of contour maps to represent the diagnosis map of a bearing, used as a health map, is presented for the first time. The results show that the proposed method is promising, allowing for the satisfactory detection and evaluation of the severity of bearing damage. In this initial stage of the research, our results suggest that this method can improve the classification of bearing faults and, therefore, optimise maintenance processes.

scholarly journals Cultural Capital in China? Television tastes and cultural distinction among college students in Beijing

2020 ◽  
Author(s):  
Yang GAO ◽  
giselinde kuipers
Keyword(s):  
Cultural Capital ◽  
Multiple Correspondence Analysis ◽  
International Experience ◽  
Cultural Knowledge ◽  
Two Dimensions ◽  
Social Boundaries ◽  
Cultural Goods ◽  
The Aesthetic ◽  
Cultural Hierarchies ◽  
First Time

Can television taste function as cultural capital in contemporary China? This paper investigates, for the first time, how Chinese engage with global pop culture to mark their positions in China’s swiftly changing social and cultural hierarchies. Using multiple correspondence analysis (MCA) of a survey (n=422) and 48 interviews with students at an elite Beijing university, we identify three distinct taste dimensions: not-knowers versus dislikers; TV lovers versus avoiders; and Western and Eastern TV taste. We identify dimensions 1 and 3 as cultural capital dimensions: respondents on the “high end” draw taste-based social boundaries vis-à-vis those on the low end, who in turn accept the hierarchies implied in these tastes. The two dimensions differ in the criteria used to make aesthetic distinctions, the type of cultural knowledge they rely on, and in the strength of their boundary-drawing. We conclude that the “Western” taste is more exclusive than the “dislike” taste. The first is mainly based on aesthetic criteria (complexity, authenticity), whereas the second combines aesthetic (complexity, depth) and cosmopolitan (language skills, international experience) distinctions. While the liking of both dimensions is related to parental cultural capital (education, occupation, urbanity), the “Western” taste also correlates with parental economic capital and international experience. This “discovery” of cultural capital in China has implications for our understanding of cultural and cosmopolitan capital, of the global diffusion of cultural goods and the aesthetic and status systems implied in these goods, and for our understanding of culture and stratification in China.

Halimeda incrassata (Bryopsidales, Chlorophyta) reaches the Canary Islands: mid- and deep-water meadows in the eastern subtropical Atlantic Ocean

2018 ◽  
Vol 61 (2) ◽  
pp. 103-110 ◽  
Author(s):  
Carlos Sangil ◽  
Laura Martín-García ◽  
Julio Afonso-Carrillo ◽  
Jacinto Barquín ◽  
Marta Sansón
Keyword(s):  
Atlantic Ocean ◽  
Canary Islands ◽  
Deep Water ◽  
Population Coverage ◽  
Isolated Populations ◽  
La Palma ◽  
Soft Bottoms ◽  
The Caribbean ◽  
Marine Flora ◽  
First Time

AbstractExtensive offshore meadows ofHalimeda incrassataare documented for the first time in sandy bottoms of La Palma, Canary Islands.Halimeda incrassataforms dense sublittoral assemblages between 20 and 55 m, but isolated populations occur down to 65 m depth. This species currently spreads over an area of 9.14 ha. Population coverage varies with depth, with the highest values at 35–40 m and an average cover of 62.34%. The calcified segments ofH. incrassataact as a stable substratum in these soft bottoms for the growth of other macroalgae, such as the rhodophytesLophocladia trichocladosandCottoniella filamentosa. Specimens reach lengths of up to 10 cm, shorter than individuals from the Caribbean. Although it is difficult to ascertain whether this species is a recent introduction, there is evidence of a correlation between the increase in population coverage and recent ocean warming, constituting another example of the tropicalization of the marine flora of this region.

scholarly journals Bibliographic Catalogue of the Marine Benthic Algae in the Papahānaumokuākea Marine National Monument (Northwestern Hawaiian Islands)

Phytotaxa ◽  
2014 ◽  
Vol 167 (1) ◽  
pp. 35 ◽  
Author(s):  
ROY T. TSUDA
Keyword(s):  
Hawaiian Islands ◽  
Algal Species ◽  
Benthic Algae ◽  
Hawaiian Archipelago ◽  
The Third ◽  
National Monument ◽  
Northwestern Hawaiian Islands ◽  
Reference Index ◽  
Reference Section

The algal bibliographic catalogue of the Papahānaumokuākea Marine National Monument (PMNM) is based on previously published records for the 10 northwestern islands, atolls and shoals in the Hawaiian Archipelago, and includes, aligned from northwest to southeast, Kure Atoll (90 species), Midway Atoll (123 species), Pearl & Hermes Atoll (74 species), Lisianski Island including Neva Shoals (52 species), Laysan Island (131 species), Maro Reef (79 species), Gardner Pinnacles (75 species), French Frigate Shoals including La Pérouse Pinnacle (173 species), Necker Island (118 species) and Nihoa Island (33 species). The first section (I. Classification) provides a listing of classes, orders, and families of the 148 genera reported from the PMNM. The second section (II. Species-Reference Index) provides an alphabetized listing of the 335 algal species under the four Phyla, i.e., Cyanobacteria (18 species), Rhodophyta (198 species), Ochrophyta (45 species) and Chlorophyta (74 species) with the applicable reference citations for each island, atoll or shoal. Brief notes are provided, when appropriate, for selected species. The third section (III. Island-Reference Index) provides a chronological listing of all published algal references for each respective island, atoll or shoal. The Reference section contains the complete citation for each reference.  

Oil Pollution in the Mediterranean Sea: An Overview

2020 ◽  
Author(s):  
Angela Carpenter
Keyword(s):  
Mediterranean Sea ◽  
Marine Environment ◽  
Oil Pollution ◽  
Marine Ecosystem ◽  
General Terms ◽  
The Mediterranean ◽  
Many Sources

<p><span>Oil pollution can enter the marine environment from many sources including land, shipping, and oil installations. It can have significant impacts on the marine environment that, depending on the type of oil, can last for prolonged periods of time. Monitoring oil pollution in the Mediterranean Sea region has been conducted using both aerial and satellite surveillance. This presentation will provide an overview of the sources and volumes of oil entering the Mediterranean, identify impacts on the marine ecosystem in general terms, and will review surveillance activities in the region, including cooperative activities undertaken by regional and EU agencies, for example. </span></p> <p> </p>

scholarly journals Atlas of Main-line OH Masers in the Galactic Longitude Range 3° to 60°

1983 ◽  
Vol 36 (3) ◽  
pp. 417 ◽  
Author(s):  
JL Caswell ◽  
RF Haynes
Keyword(s):  
Star Formation ◽  
Circular Polarization ◽  
Galactic Plane ◽  
Hii Regions ◽  
Main Line ◽  
Late Type ◽  
Circumstellar Shells ◽  
Many Sources ◽  
First Time ◽  
Galactic Longitude

We tabulate all 55 OH main-line masers discovered to date in the galactic plane between longitude 3� and 60�. For most of these we show current spectra, which have been taken with the Parkes 64 m radio telescope, in both senses of circular polarization on the 1665 MHz and/or 1667 MHz transitions; for some sources we give new position estimates, and several sources are reported for the first time. We discuss many sources individually and note that while most of the main-line OH masers probably pinpoint compact HII regions and sites of current star formation, a few appear to be unusual varieties occurring in circumstellar shells, possibly associated with late-type stars.

First record of Polyneura bonnemaisonii (Delesseriaceae, Rhodophyta) from the Atlantic Ocean of Africa

2015 ◽  
Vol 8 ◽  
Author(s):  
Mustapha Hassoun ◽  
Hanaa Moussa ◽  
Hanaa Zbakh ◽  
Hassane Riadi ◽  
Mohamed Kazzaz ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Geographic Distribution ◽  
Related Species ◽  
Algal Species ◽  
First Record ◽  
Closely Related Species ◽  
North West ◽  
Red Algal ◽  
First Time

A red algal species,Polyneura bonnemaisonii(Delesseriaceae, Rhodophyta), is described for the first time in the Atlantic Ocean of Morocco. This is also the first reference of the occurrence of this species in Africa. This species was collected in the lower intertidal to subtidal zones, from Hyayda (north-west of Morocco). The Moroccan specimen is studied in detail and compared with other closely related species. Habitat, geographic distribution, description and illustration of the macroscopic and microscopic characters are presented and discussed in this work.

scholarly journals Quorum Sensing Regulation of Virulence Gene Expression in Vibrio harveyi during its Interaction with Marine Diatom Skeletonema marinoi

2021 ◽  
Author(s):  
Gurpreet Kaur-Kahlon ◽  
Ballamoole Krishna Kumar ◽  
H.A. Darshanee Ruwandeepika ◽  
Tom Defoirdt ◽  
Indrani Karunasagar
Keyword(s):  
Quorum Sensing ◽  
Virulence Factors ◽  
Bacterial Species ◽  
Marine Ecosystem ◽  
Algal Species ◽  
Cell Communication ◽  
Virulence Gene ◽  
Marine Diatom ◽  
Virulence Gene Expression ◽  
Virulence Regulator

Communication between species from different kingdoms may be as important as intra-kingdom communication. It has recently been confirmed that co-existing bacteria and phytoplankton in aquatic ecosystems do cross-talk. This study examined the signs of possible cross signalling between V. harveyi, one of the predominant bacterial species of the marine ecosystem and a dominant diatom species, S.marinoi, to understand communication over species borders. It is known that V.harveyi employ quorum sensing for cell-to-cell communication, bioluminescence (luxR), and the regulation of the virulence gene (vhp, chiA). Former studies have also shown, this kind of interactions being disrupted by compounds secreted by a few algal species existing in the aquatic ecosystem. We investigated the QS communication by quantifying the expression levels of virulence regulator luxR and virulence factors metalloprotease (vhp) and chitinase (chiA) in four different V. harveyi strains grown in the presence of S. marinoi strain. Results obtained in this study indicate that quorum sensing was activated in strains of V. harveyi analysed but did not regulate the expressions of vhp and chiA virulence factors. This observation suggests that the existence of S. marinoi did not interfere with the QS behaviour of V. harveyi and its interaction with marine diatom; it may be due to the commensalism relationship.

scholarly journals THE FIRST OPERA OF THE TURKISH WORLD "LEYLI AND MAJNUN’’

2021 ◽  
Vol 13 (2) ◽  
pp. 305-320
Author(s):  
Ömer TÜRKMENOĞLU ◽  
Zümra AZİZOĞLU
Keyword(s):  
Folk Music ◽  
Western Music ◽  
Tonal Structure ◽  
Music And Literature ◽  
The Public ◽  
History Of ◽  
The Subject ◽  
Many Sources ◽  
First Time ◽  
The City

The Turkish world's opera history gave its first example in 1908 with the opera "Leyli and Majnun" by Azerbaijani composer Üzeyir Hacıbeyli. According to many sources, "Leyli and Majnun" is described as the first opera of the Turkish world and the Islamic world, and the east. The most important feature of this opera is the masterful synthesis of classical western music and folk music. The opera, which was composed for the first time in this way, influenced the east with its staging and ensured that the art of opera was adopted by the public. The great composer Uzeyir Hajibeyli was born in the city of Shusha in Azerbaijan, which was developed in the field of literature and music and called the "natural conservatory." He developed his existing talent here and built it on solid foundations. He was interested in music and literature, wrote many books, articles, and was a writer for newspapers. The subject of the opera Leyli and Majnun is taken from Fuzuli's "Leyli and Majnun" poetry of the same name. At the age of 13, the composer decided to write this opera, influenced by the theater show "At the tomb of Majnun Leyli'' which he watched in Shusha, his home city. He started working on opera in 1907 when he was only 22 years old. By bringing a different perspective to opera, he used the tonal structure of western music with 'mugham,' also known as Azerbaijani folk music. This type of opera is also called "Mugam Opera.'' The opera, which was composed and performed despite the conditions of the period, preserved its originality by combining two cultures and was performed many times in other countries. Operas from the Turkish world are rarely staged in our country, and there is a need for such an article because the opera "Leyli and Majnun" has not been staged much in Turkey and there are very few theses, articles, and books about it. In this study; Different titles have been created such as the history of Azerbaijan opera, the life of Uzeyir Hajibeyli, the composer's process of creating the opera, and the content of the opera Leyli and Majnun. Keywords: Leyli and Majnun, Uzeyir Hajibeyli, Turkish World, Opera

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