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Tytuł:
Seasonal changes of sedimentation rates and sediment characteristics status in the Gulf of Mannar Coral Island, India
Autorzy:
Yogesh Kumar, J.S.
Geetha, S.
Sornaraj, R.
Powiązania:
https://bibliotekanauki.pl/articles/11860.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
seasonal change
sedimentation rate
sediment status
Mannar Gulf
Coral Island
coral reef
marine sediment
Thoothukudi group
Vembar group
India
Opis:
Corals are known to flourish in various turbid environments around the world. The quantitative distinction between clear and turbid water in coral habitats is not well defined nor are the amount of sediment in suspension and rates of sedimentation used to evaluate the condition of reef environments well established. This study of sedimentation rate, sediment composition and pH, OC deposition was on a fringing reef flat off Thoothukudi and Vembar group of islands, Gulf of Mannar, India. In the present study the sedimentation rate ranged from 1.97 mg/cm2/day to 12.31 mg/cm2/day. The percentage of sand in the sediment was higher than silt and clay. The organic carbon level in all the study stations ranged from 0.03 to 2.54. The sediment pH of the six studied stations was highly acidic in nature at all the study sites in the Gulf of Mannar.
Źródło:
International Letters of Natural Sciences; 2014, 01
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The oldest representative of a modern deep-sea ophiacanthid brittle-star clade from Jurassic shallow-water coral reef sediments
Autorzy:
Thuy, B.
Schulz, H.
Powiązania:
https://bibliotekanauki.pl/articles/23392.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Echinodermata
Ophiuroidea
Ophiacanthidae
coral reef
deep sea group
Late Jurassic
Mergelstetten Formation
Germany
sediment
Opis:
Ophiurites crinitus is a fossil brittle−star species which passed largely unnoticed since its original description. In this paper, we redescribe the type material of O. crinitus with the aim to put it into the context of modern ophiuroid systematics, and propose the new genus name Ophiosternle to replace the invalid Ophiurites. The re−assessed species is shown to be a member of the extant deep−sea family Ophiacanthidae, articulated fossils of which are extremely rare. It presents greatest affinities with members of the Ophioplinthaca–Ophiocamax–Ophiomitra clade, of which it most probably represents the oldest known fossil species. The depositional environment of the strata, which yielded the described specimens is interpreted as shallow, storm−influenced marine setting in the immediate vicinity of coral reefs. This contrasts with the distribution pattern of extant species of the Ophioplinthaca–Ophiocamax–Ophiomitra clade, which almost exclusively occur at depths exceeding the shelf break.
Źródło:
Acta Palaeontologica Polonica; 2013, 58, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Community structure of macrozoobentos on artificial reef made from reef rubble and split rock in Tunda Island, province of Banten, Indonesia
Autorzy:
Setiadeswan, Ridlo
Riyantini, Indah
Mulyani, Yeni
Pamungkas, Wahyuniar
Powiązania:
https://bibliotekanauki.pl/articles/1076630.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Artificial Coral Reef Community Structure
Macrozoobenthos
Reefs Rubble
Split rock
Tunda Island
Opis:
Tunda Island has underwater beauty that has the potential to be developed into a marine tourism object. One important part of this is the fringing reef around the island. Unfortunately, this has been severely degraded. This study aims to determine if reef rubble and split rock artificial reefs have the ability to be a living space for macrozoobenthos and to measure the potential community structure. The research was conducted in August 2018 - November 2018 in the eastern part of Tunda Island, and included monitoring the initial conditions, artificial reef creating and positioning, gathering and analyzing macrozoobenthos data. The macrozoobenthos data collection was carried out from September to November 2018 as 4 observations, and was obtained using the Belt Transect method. In the analysis, the community structure data retrieved was divided into 3 categories: diversity, abundance and dominance. The diversity index obtained ranged from 0.43 – 7.65, meaning that it is of low to moderate diversity. The abundance of macrozoobenthos ranged from 1 - 18 individuals /m2 on the rubble type artificial reef and 2.13 – 4.26 individuals /m2 on the split type artificial reefs, with the most common class being gastropods. On rubble type artificial reefs, 14 macrozoobenthos genera were found to be common, while 13 genera were observed in the split type. The genus found was Culcita sp., Chicoreus sp., Diadema sp., Chelidonura sp., Thrombus sp., Chromodoris sp., Cymatium sp., Trochus sp., Terebra sp., Dardanus sp., Malea sp., Oliva sp., Opheodosoma sp., Actinopyga sp., Conus sp., Enoplometopus sp., Cypracea sp., Lambis sp., and Phylidia sp. The dominance index value was in the range of 0.18-1.00 or low to high on both rubble and split types.
Źródło:
World News of Natural Sciences; 2019, 27; 128-140
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution and Condition of Coral Reefs in the Waters of Biawak Island, Indramayu Regency, West Java, Indonesia
Autorzy:
Rizal, Achmad
Apriliani, Izza Mahdiana
Herawati, Heti
Paradhita, Lantun
Powiązania:
https://bibliotekanauki.pl/articles/1030508.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Biawak Island
Coral Reef
Distribution and Condition
Opis:
This research aimed to find out the condition of coral cover and the distribution or spreading of coral reefs in the waters of Biawak Island using coral reef monitoring. Several supporting aspects that were also required to know were the percentage value of coral cover, diversity index, uniformity index, similarity index, dominance index, and the value of coral mortality, to support the activities of the management of coral reef of Biawak Island. This research was conducted in the waters of Biawak Island, Indramayu Regency, West Java. The research was conducted using a survey method through field data collection. Quantitative and qualitative data collection was conducted using the line transect method (Line Intercept Transect / LIT) to collect data on 3 stations at a depth of 3 and 7 feet using 3 replicates per station. Distribution of corals in the waters of Biawak Island was spread evenly, known from the percentage of frequency of coral lifeform converge which was found mostly above 50%, a low dominance index ranged from 0.128 to 0.216, a diversity index ranged from 1.884 to 2.246, and supported also by the similarity index value ranged from 95.24% - 100.00%. The condition of coral reefs in the waters of Biawak Island ranged from a poor to moderate criteria whereas the percentage of coral cover obtained was between to 17.04% to 44.93%.
Źródło:
World Scientific News; 2020, 144; 141-157
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Silurian of southwestern margin of the East European Platform (Ukraine, Moldova and Romania) : lithofacies and palaeoenvironments
Autorzy:
Radkovets, N.
Powiązania:
https://bibliotekanauki.pl/articles/2059822.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
East European Platform
Silurian
lithofacies
reef
shelf of Baltica
palaeoenvironments
Opis:
Silurian strata, stretching along the western margin of the East European Platform from the Baltic to the Black Sea, represent a potential target for both conventional and unconventional hydrocarbon exploration. Distribution of the black shale facies, prospective for shale gas, and the reef facies, prospective for oil, has been studied in respect of palaeoenvironments. The Silurian sequence has been investigated in the territory of Ukraine (Volyn-Podillyan Plate, Dobrogean Foredeep) and correlated with the data on Moldova and Romania (Moldovian Platform). The occurrence of Silurian strata, their thickness, and petrographic and lithological characteristics allowed reconstructing the distribution of open-shelf, reef and lagoonal facies. The reef facies migrated during the Wenlock–Middle Pridoli, shifting towards the open sea and back towards the shore, and therefore has been termed a migrating reef facies. Correspondingly, the boundary between the open-shelf and reef facies was shifting. The facies distribution was controlled by the transgressive-regressive cycles, which caused the fluctuations of the shelf water depth in different time intervals of the Silurian. The shelf water depth of about 100 m, where the top of the oxygen-minimum layer impinged on the sea bottom, was the boundary between the open-shelf facies, represented by organic-rich sediments, and the reef buildups.
Źródło:
Geological Quarterly; 2015, 59, 1; 105--118
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Very large stromatoporoid indicating Early Frasnian reef core (Holy Cross Mts., Poland)
Autorzy:
Racki, G.
Sobstel, M.
Powiązania:
https://bibliotekanauki.pl/articles/2058751.pdf
Data publikacji:
2004
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Stromatoporoidea
Dyminy Reef
Frasnian
Holy Cross Mountains
Polska
Opis:
A large stromatoporoid Actinostroma cf. crassepilatum Lecompte, 1951, at least 8.5 m in diameter and 0.85 m in height, occurs in the Śluchowice quarry in Kielce, Holy Cross Mountains. This sponge occurs in growth position within Early Frasnian (transitans Zone) intraclast-rich reef-rubble deposits. A unique preservation of the reef-builder close to a reef core is implied for the northern flank of the developing Dyminy Reef during its maximum expansion northward into the Kostomłoty intrashelf basin.
Źródło:
Geological Quarterly; 2004, 48, 1; 83--88
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formations recifales du Devonien des Monts de Sainte-Croix (Pologne)
Utwory rafowe w dewonie Gór Świętokrzyskich
Rifovye obrazovanija devona Sventokrzhiskikh Gor (Polsha)
Autorzy:
Pajchlowa, M.
Stasinska, A.
Powiązania:
https://bibliotekanauki.pl/articles/21215.pdf
Data publikacji:
1965
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Holy Cross Mountains
Polska
paleontology
Devonian
reef
Źródło:
Acta Palaeontologica Polonica; 1965, 10, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie Recreation Opportunity Spectrum w zarządzaniu obszarami chronionymi na przykładzie wielkiej rafy koralowej w Australii
Applying the Recreation Opportunity Spectrum in the management of protected areas: case of the Great Barrier Reef
Autorzy:
Nowacki, M.
Powiązania:
https://bibliotekanauki.pl/articles/96360.pdf
Data publikacji:
2015
Wydawca:
Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
Tematy:
Spektrum Warunków Rekreacyjnych
zagospodarowanie przestrzenne
Wielka Rafa Koralowa
zarządzanie oparte na doświadczeniu
Recreation Opportunity Spectrum
zoning
Great Barrier Reef
Experience-Based Management
Opis:
Celem niniejszego artykułu jest przedstawienie zastosowania systemu Spektrum Warunków Rekreacyjnych w zarządzaniu obszarem Wielkiej Rafy Koralowej w Australii.
The author tries to explain the idea of Recreation Opportunity Spectrum system and its practical application in the management of the protected area: Great Barrier Reef Marine Park in Australia. ROS main idea is to determine recreation settings, where varying outdoor recreation activities and experience opportunities can be realized. These concepts, which have been developed relatively recently, are very useful in the management of recreational areas around the world. The implementation of this system in the Great Barrier Reef Marine Park runs from the 80’s and is constantly modified in order to achieve its objectives, which are, on the one hand: the protection of natural heritage resources, and on the other: making them available to tourists and to ensure the viability of the local economy. This system is not perfect and requires constant changes and improvements. According to the author, ROS and zoning, are those of many management tools that can be successfully implemented in Poland in the areas intensively used in tourism and recreation. The increasing volume of reported recreational conflicts all over the country, confirm the need for seeking management strategies, which the ROS system and zoning are included.
Źródło:
Ekonomia i Środowisko; 2015, 3; 81-91
0867-8898
Pojawia się w:
Ekonomia i Środowisko
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wave-induced set-up and flow over shoals and coral reefs. Part 1. A simplified bottom geometry case
Autorzy:
Massel, S.R.
Brinkman, R.M.
Powiązania:
https://bibliotekanauki.pl/articles/47564.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
shoal
hydrodynamics
coral reef
shallow
biological variability
wave motion
morphology
water depth
linear function
Opis:
An analytical approach was used to model the wave-induced set-up and flow through simple shoal geometry when water depth is a linear function of the distance. Two different approaches were applied to parameterize the energy dissipation due to wave breaking. The resulting set-up height and flow velocity were determined and their dependence on the geometry of the shoal and offshore forcing was demonstrated. The extension of the solution to a more complicated bathymetry and verification against the experimental data will be given in the second part of the paper.
Źródło:
Oceanologia; 2001, 43, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Abundance and distribution of sea urchins (Echinoidea Leske, 1778) on coral reefs in the waters of Latondu Island, Taka Bonerate, South Sulawesi, Indonesia
Autorzy:
Malik, Prasetia Maulana
Riyantini, Indah
Yuliadi, Lintang Permata Sari
Hamdani, Herman
Powiązania:
https://bibliotekanauki.pl/articles/1076619.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Diadema antillarum
Diadema setosum
Echinoidea
Echinometra mathaei
Echinotrix calamaris
Echinotrix diadema
Heterocentrotus mammillatus
Latondu Island
Mespillia globulus
abundance
coral reef
distribution
sea urchin
Opis:
Sea urchin is one of the key biota of coral reef stability. Research on the abundance and distribution of urchins was carried out from January-August 2019 and field data retrieval occurred in March 2019 on Latondu Island, Taka Bonerate. This study aims to determine the relationship between sea urchin abundance with coral reef conditions and sea urchin distribution patterns in the waters of Latondu Island, Taka Bonerate. Observation of coral reefs and sea urchins was carried out at 3 stations with different criteria of coral reef conditions. Retrieval of coral reef data was done using the Point Intercept Transect (PIT) method, while sea urchin observation came about via a transect belt method. The results showed that in the waters of the island of Latondu, there were 133 sea urchins from 7 species of the Echinoidea class, namely Diadema setosum, Diadema antillarum, Echinometra mathaei, Echinotrix calamaris, Mespillia globulus, Heterocentrotus mammillatus and Echinotrix diadema. The largest abundance of sea urchins was found in Station 3 on the southern part of Latondu Island with 12 ind / 50m2, while Station 1 in the northeast and Station 2 in the northwest part showed 5 ind / 50m2. Sea urchin distribution at Station 1 with a value of 0.79 was uniform, Station 2 with a value of 0.80 was also uniform and Station 3 with a value of 0.91 was uniform as well. The relationship between Sea urchin and coral reef was 0.56, which meant the relationship was moderate and directly proportional.
Źródło:
World News of Natural Sciences; 2019, 27; 59-72
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sedimentary successions in the Middle-Upper Oxfordian reef deposits from the southern part of the Kraków-Częstochowa Upland (Southern Poland)
Autorzy:
Krajewski, M.
Olchowy, P.
Rudziński, D.
Powiązania:
https://bibliotekanauki.pl/articles/2060435.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
microbialites
non-skeletal grains
reef
carbonate ramp
Oxfordian
Polska
Opis:
The sedimentary succession of the largest example of an Upper Oxfordian reef located in the southern part of the Polish sector of the northern Tethys shelf is described. Detailed sampling of exposures enabled characterization of the full succession of facies and microfacies diversity, documenting the reef evolution. The succession studied represents the maximum development of Upper Jurassic reefs in Poland corresponding to the upper Transversarium and the Bifurcatus zones, and followed by drowning of the carbonate platform in the lower Bimmamatum Zone. The reef succession comprises three types of facies, in which eight important microfacies types were distingushed, reflecting several stages of reef development. Mid-ramp, microbial-sponge frame-reefs represent a transgressive depositional sequence, up to tens of metres thick. A microbial-Crescentiella-ooid and ooid-intraclast-bioclast facies form numerous, decimetre- to metre-scale, sequences corresponding to higher-order, transgressive/regressive sea level changes. These facies represent a mid-inner ramp setting when sedimentation was dominated by bioclasts and non-skeletal grains (mainly ooids, oncoids, aggregate grains and intraclasts). The grains were stabilized by microbialites and cemented in early diagenesis, which created grain-dominated, microbial-cement supported reefs. As a result, both the mid-ramp, microbial-sponge frame-reefs and the shallow-water, grain-dominated, microbial-cement supported reefs form extensive, strongly lithified Oxfordian reef complexes in the Kraków-Częstochowa Upland.
Źródło:
Geological Quarterly; 2018, 62, 3; 653--668
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The patterns of changes in coral reef coverage (1994-2006) in the Seribu Islands National Park, Jakarta, Indonesia
Autorzy:
Harahap, Syawaludin A.
Shabrina, Nikita A.
Purba, Noir P.
Syamsuddin, Mega L.
Powiązania:
https://bibliotekanauki.pl/articles/1839867.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Change analysis
Coral reef
CVA
Landsat Imagery
Lyzenga
TNKpS
Seribu Islands National Park
Opis:
Coral reef ecosystems are unique ecosystems that can live and reproduce well in the tropics. Corals that makeup reefs are a very important component of ecosystems on the earth's surface. These ecosystems are habitats for a large number of diverse organisms in the oceans. However, in recent years coral reefs have experienced significant degradation as a result of the impact of human disturbances and natural factors on biodiversity and ecosystem functions. It is known that 90% of coral reef damage comes from human activities and 10% comes from climate change (natural events). In addition to natural events, such as waves, storms, and rising sea surface temperatures, the use of island land and the increasing population and utilization of coral reef resources around the island, including those that may cause a decrease in coral cover, can indirectly change the morphology of the island. To find out about the pattern of changes in coral reef cover area based on zoning in TNKpS, it is necessary to conduct a quick and effective study by utilizing digital processing of satellite imagery. The data used are Landsat images (1994, 2000, and 2006) with change detection method using CVA technique. The results of the analysis showed that there was a change in the increase in coral reef cover over 12 years (1994-2006). The pattern of changes that occur is dominated towards the Northeast and Northwest in the area 1, meanwhile, for area 2 it varies in all directions.
Źródło:
World News of Natural Sciences; 2021, 38; 120-138
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the impact of exemption from pilotage for 75m and 90m long vessels on the fairway Świnoujście-Szczecin
Autorzy:
Gucma, L.
Łazuga, K.
Powiązania:
https://bibliotekanauki.pl/articles/117157.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
ship's manoeuvrability
fairway Swinoujscie-Szczecin
Danish Straits
great barrier reef
bosporus strait
Tokyo Bay
pilotage operations
pilotage
Opis:
The aim of the study is to analyze the impact of exemption from pilotage for 75m and 90m long vessels entering Szczecin on navigation safety on the waterway Świnoujście-Szczecin. Available sources concerning the influence of maritime pilotage on the safety of navigation have been analysed. Such data have been collected and made available only for the Danish Straits, the Great Barrier Reef Area of Australia, the Bosporus Straits and the Tokyo Bay. The study also included an analysis of economic effectiveness of pilotage exemption in this area.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 627-631
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The isolated Wuchiapingian (Zechstein) Wielichowo Reef and its sedimentary and diagenetic evolution, SW Poland
Autorzy:
Fheed, A.
Świerczewska, A. T.
Krzyżak, A.T.
Powiązania:
https://bibliotekanauki.pl/articles/2060002.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
reef
microfacies
diagenesis
porosity
Zechstein Limestone
Wolsztyn Ridge
Opis:
The development of a relatively small and isolated part of the Wuchiapingian, Zechstein Wielichowo Reef was possible owing to a progressive subsidence and frequent sea level fluctuations. Three biofacies were distinguished within the studied object: (1) a shallow-water and highly energetic Acanthocladia biofacies, dominated by bryozoans and crinoids, with poorly preserved porosity, reduced mainly by calcite cementation and compaction; (2) the Horridonia biofacies comprising numerous brachiopods, preferring a moderate depth of water, with comparably poor porosity; and (3) the Fenestella/Kingopora biofacies rich in fossils of the highest variability, related to the deepest and calmest waters, occurring on the top of the profile and showing a significant effective porosity, reaching almost 13%. Among many diagenetic processes altering the reef, several lines of evidence suggest that it was the meteoric diagenesis to enhance its porosity the most extensively. Since no stromatolites are present, the final sea level decrease is interpreted to be rapid, hence creating conditions favourable for the meteoric dissolution. Some intraparticle porosity, however, seems to be of a depositional origin.
Źródło:
Geological Quarterly; 2015, 59, 4; 762--780
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
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