scholarly journals High reproductive synchrony of Acropora (Anthozoa: Scleractinia) in the Gulf of Aqaba, Red Sea

F1000Research ◽  
2015 ◽  
Vol 4 ◽  
pp. 2 ◽  
Author(s):  
Jessica Bouwmeester ◽  
Michael L. Berumen

Coral spawning in the northern Gulf of Aqaba has been reported to be asynchronous, making it almost unique when compared to other regions in the world. Here, we document the reproductive condition of Acropora corals in early June 2014 in Dahab, in the Gulf of Aqaba, 125 km south of previous studies conducted in Eilat, Israel. Seventy-eight percent of Acropora colonies from 14 species had mature eggs, indicating that most colonies will spawn on or around the June full moon, with a very high probability of multi-species synchronous spawning. Given the proximity to Eilat, we predict that a comparable sampling protocol would detect similar levels of reproductive synchrony throughout the Gulf of Aqaba consistent with the hypothesis that high levels of spawning synchrony are a feature of all speciose coral assemblages.

2014 ◽  
Author(s):  
Alvin J Cheliah ◽  
Halimi Bin Amir ◽  
Julian Hyde ◽  
Katie Yewdall ◽  
Peter D Steinberg ◽  
...  

Knowledge about the timing and synchrony of coral spawning has important implications for both the ecology and management of coral reef ecosystems, however,data on spawning timing and extent of synchrony are still lacking for many coral reefs, particularly from equatorial regions and from locations within the coral triangle. Here we present the first documentation of a multi-species coral spawning event from reefs around Pulau Tioman, Peninsular Malaysia, a popular diving and tourist destination located on the edge of the coral triangle. At least 8 coral species from 3 genera and 2 families participated in multi-species spawning over five nights in April 2014, between two nights before and two nights after the full moon. Two Acropora species (A. digitifera and A. tenuis) also spawned one night prior to the full moon in October 2014. While two species of Acropora (A. millepora and A. nasuta) exhibited highly synchronous spawning in April (100% of sampled colonies), two other common species (A. hyacinthus and A. digitifera) did not contain visible eggs in the majority of colonies sampled (i.e., <15% of colonies) in either April or October, suggesting that these species spawn at other times of the year. To the best of our knowledge, this is the first detailed documented observation of multi-species coral spawning from reefs in Malaysia and these data support the contention that this phenomenon is a feature of all speciose coral assemblages. More research is needed, however, to determine the seasonal cycles and extent of spawning synchrony on these reefs and elsewhere in Malaysia.


2014 ◽  
Author(s):  
Alvin J Cheliah ◽  
Halimi Bin Amir ◽  
Julian Hyde ◽  
Katie Yewdall ◽  
Peter D Steinberg ◽  
...  

Knowledge about the timing and synchrony of coral spawning has important implications for both the ecology and management of coral reef ecosystems, however,data on spawning timing and extent of synchrony are still lacking for many coral reefs, particularly from equatorial regions and from locations within the coral triangle. Here we present the first documentation of a multi-species coral spawning event from reefs around Pulau Tioman, Peninsular Malaysia, a popular diving and tourist destination located on the edge of the coral triangle. At least 8 coral species from 3 genera and 2 families participated in multi-species spawning over five nights in April 2014, between two nights before and two nights after the full moon. Two Acropora species (A. digitifera and A. tenuis) also spawned one night prior to the full moon in October 2014. While two species of Acropora (A. millepora and A. nasuta) exhibited highly synchronous spawning in April (100% of sampled colonies), two other common species (A. hyacinthus and A. digitifera) did not contain visible eggs in the majority of colonies sampled (i.e., <15% of colonies) in either April or October, suggesting that these species spawn at other times of the year. To the best of our knowledge, this is the first detailed documented observation of multi-species coral spawning from reefs in Malaysia and these data support the contention that this phenomenon is a feature of all speciose coral assemblages. More research is needed, however, to determine the seasonal cycles and extent of spawning synchrony on these reefs and elsewhere in Malaysia.


Author(s):  
Н. Алтыкеева ◽  
Б. Ниясалиева

Аннотация. Макалада романдын мазмунунан орун алган пейзаждык сүрөттөөлөр талкууланат. Пейзаждык сүрөттөөлөр чыгарманын көркөмдүүлүгүн, эстетикалык баалуулугун арттыруу менен катар эле каармандардын образын тереңден ачып берүүдө, окуялардын өнүгүп-өсүшү жана алдыда боло турган окуялар тууралуу окурманга маалымат берүүдө кошумча каражат катары колдонулат. Жазуучу романда пейзаждык сүрөттөөлөрдү өтө кылдат колдонгону байкалат. Алсак, тоо адамдагы улуулук жана бийиктикти айгинелейт, толукшуган ай жан- дүйнөнүн бөксөрбөй толуп турушун көрсөтөт, ачык асмандын алай-дүлөй түшкөн көрүнүшкө айланышы - каармандын ички сезими, уйгу-туйгу ойлонуусу, жан дүйнөсүнүн бурганак болушун ачып көрсөтүүдө маанилүү болсо, чабалекейлердин тынымсыз учуп чабалакташы, жан алакетке түшүп чыйпылдашы – алдыда боло турган кырсыктуу окуя тууралуу кабар берсе, согуштун апааты жашыл шибердин, бак-дарактардын күлгө айланышы, чымчык-куштардын күздү күтпөй кайдадыр учуп кетип жатышы менен түшүндүрүлөт. Tүйүндүү сөздөр: пейзаж. роман, идея, легенда, эпилог, каарман, негизги окуялар. Аннотация. В статье дается пейзажное описание. Пейзажное описание используется в произведении как дополнительное средство эстетических ценностей и помогает раскрыть образы героев, и действия произведения. Писатель в романе тонко использует пейзажное описание. Например горы возвышенное и самое ценное в человеке, а полная луна – счастливое душевное состояние человека, а превращение безоблачного неба в бущующий вид – указывает, как неспокойно в душе главного героя, его беспокойные мысли, как бушует его внутренний мир, а ласточки неспокойно летающие, предвещают несчастье, птицы улетающие раньше времени, превращение зелёной травы, деревьев в пепел предвещают ужасы войны. Ключевые слова: пейзаж. роман, идея, легенда, эпилог, герой, главное событие Annotation. The article discusses the landscape description. The landscape description is used in the work as an additional tool for aesthetic values and helps to reveal the images of heroes, and in the development of the action of the work/ The writer in the novel subtly uses the landscape description. The mountains are the sublime and the most valuable in a person, and the full moon is a happy state of mind of a person, and the transformation of a cloudless sky into a raging view indicates how restless the soul of the protagonist is, his restless thoughts. How his inner world is raging, and the swallows are restlessly flying, foreshadow the misfortune, the birds flying away ahead of time, the transformation of green grass, trees in the forehead the horrors of war. This article describes the idea of the story "Do not kill" which is given instead of the epilogue in the novel "When the mountains fall" which was written by Ch.Aitmatov. It considers the role of a story that calls to live in peace and to end wars that are occurring in the world. Keywords: Landscapе, novel, idea, legend, epilogue, hero, main event.


Author(s):  
Pooja Sharma ◽  
Karan Veer

: It was 11 March 2020 when the World Health Organization (WHO) declared the name COVID-19 for coronavirus disease and also described it as a pandemic. Till that day 118,000 cases were confirmed of pneumonia with breathing problem throughout the world. At the start of New Year when COVID-19 came into knowledge a few days later, the gene sequencing of the virus was revealed. Today the number of confirmed cases is scary, i.e. 9,472,473 in the whole world and 484,236 deaths have been recorded by WHO till 26 June 2020. WHO's global risk assessment is very high [1]. The report is enlightening the lessons learned by India from the highly affected countries.


Author(s):  
Yilmaz Akyüz

The crisis demolished the myth that EDEs were decoupled from advanced economies and BRICS were becoming new engines of global growth. From 2011 onwards, with the end of the twin booms in commodity prices and capital inflows, growth in EDEs has converged downward towards the depressed levels of advanced economies from the very high levels achieved in the run-up to the global crisis and the immediate aftermath. Loss of momentum is particularly visible in economies that failed to manage the earlier booms prudently. In examining the spillovers from policies in major advanced economies and China to EDEs, the chapter introduces the notion of commodity-finance nexus wherein these markets reinforce each other during both expansions and contractions. The chapter concludes with a brief discussion of policies needed to put the world economy into decent shape and to avoid liquidity and debt crises in EDEs.


Author(s):  
William C. Leighty ◽  
John H. Holbrook

We must soon “run the world on renewables” but cannot, and should not try to, accomplish this entirely with electricity transmission. We need to supply all energy, not just electricity, from diverse renewable energy (RE) resources, both distributed and centralized, where the world’s richest RE resources — of large geographic extent and high intensity — are stranded: far from end-users with inadequate or nonexistent gathering and transmission systems to deliver the energy. Electricity energy storage cannot affordably firm large, intermittent renewables at annual scale, while carbon-free gaseous hydrogen (GH2) and liquid anhydrous ammonia (NH3) fuels can: GH2 in large solution-mined salt caverns, NH3 in surface tanks, both pressurized and refrigerated. “Smart Grid” is emerging as primarily a DSM (demand side management) strategy to encourage energy conservation. Making the electricity grid “smarter” does not: 1. Increase physical transmission capacity; 2. Provide affordable annual-scale firming storage for RE; 3. Solve grid integration problem for large, time-varying RE; 4. Alleviate NIMBY objections to new transmission siting; 5. Reduce the high O&M costs of overhead electric lines. The “smarter” grid may be more vulnerable to cyberattack. Adding storage, control, and quality adjunct devices to the electricity grid, to accommodate very high renewables content, may be technically and economically inferior to GH2 and NH3 RE systems. Thus, we need to look beyond “smart grid”, expanding our concept of “transmission”, to synergistically and simultaneously solve the transmission, firming storage, and RE integration “balancing” problems now severely constraining our progress toward “running the world on renewables”.


2009 ◽  
Vol 15 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Katarzyna Kubiak

Genetic diversity ofAvena strigosaSchreb. ecotypes on the basis of isoenzyme markersGenetic diversity was analyzed in 19 ecotypes of the diploid oatA. strigosaoriginating from various geographical regions of the world. Six isoenzyme systems (AAT, ACP, EST, LAP, MDH, PX) were studied and 16 loci were identified. Only two loci (Est4andMdh2) were polymorphic. Ecotypes were characterized by the percentage of polymorphic loci (P=3.3%), the mean number of alleles per locus (A=1.04) and intrapopulation diversity (HS=0.013). Total genetic diversity (HT=0.07) and interpopulation diversity (DST=0.057) were examined as well. The value of the coefficient of gene differentiation (GST=0.821) indicated that diversity among populations was an important contributor to total variability. Genetic similarity betweenA. strigosapopulations was very high (IN=0.94). Cluster analysis did not demonstrate strongly differentiated groups among the ecotypes examined.


2019 ◽  
Vol 8 (1) ◽  
pp. 534
Author(s):  
Sawalinar Sawalinar ◽  
Malta Nelisa

Abstract This study aims to determine (1) the profile of the graduate, (2) the absorption of graduate in the world of work, (3) the use of knowledge gained by the graduate in the work, (4) the assessment of stakeholders on the ability of graduate. This study uses a descriptive method with a quantitative approach. Data collection uses research instruments. The population in this study was Graduate from the major of Information, Library, and Archives of Padang State University (PS IPK UNP). The sample in this study amounted to 105 graduates who returned the instrument. The results showed, First, the profile of Graduate PS IPK UNP was dominated by female graduates. Most of the graduates are graduates who graduated in 2018. Judging from the length of the study period, the average graduate has a length of the study period of 3 years. Second, the absorption of graduates in the workforce is quite high, with most graduates stating that they are currently working with the time needed to get the job <3 months. Third, the use of knowledge obtained by a graduate at the PS IPK UNP in employment is very high. The science that has a very high level of wear is fieldwork learning, technology mastery skills, and the ability to cooperate in teams. Fourth, the assessment of graduate users (stakeholders) on the ability to graduate in the work world has also been good. The ability of the graduate to be considered good by graduate users (stakeholders) is integrity, expertise based on the fields of science, mastery of information technology, and teamwork.Keywords: Information retrieval, graduate, tracer study


2000 ◽  
Vol 6 (3) ◽  
Author(s):  
P. Benedek ◽  
G. Kocsisné Molnár ◽  
J. Nyéki

Detailed studies were made on the nectar production of 44, 16 and 18 pear cultivars, respectively, in a cultivar collection of pear during three consecutive years with highly different weather in the blooming. Results clearly show that pear does not necessarily produce small amount of nectar as stated in the world literature. In fact, pear can produce extremely high amount of nectar sometimes much higher than other temperate zone fruit trees species but its nectar production is highly subjected to weather, first of all to air temperature. Low nectar production seems to be more frequent than high one and cold weather can prevent its nectar production at all. On the other hand, results corroborate to the earlier statements on the low sugar concentration of pear nectar. There is a highly significant negative correlation between the amount of nectar produced by pear flowers and its sugar concentration (r = -0.52, n = 291, p< 0.001 for 1996, r = -0.34, n = 197, p< 0.001 for 1998). Sugar concentration in individual flowers may be up, to 40% in exceptional cases but generally it is well below 20%. Very high figures for sugar concentration in pear nectar at the literature seem to be incomprehensible. In contrast of some earlier statement in the literature no real difference could be established in the nectar production of pear cultivars, based on much more measurements than in earlier studies. Very low sugar concentration in pear nectar can explain the fact that the overwhelming majority of honeybees are pollen gatherers at pear trees even in the case of exceptionally high nectar production.  


2019 ◽  
Vol 4 (1) ◽  
pp. 88-112
Author(s):  
Farida Kurniawati ◽  
Sulistami Prihandini

Teachers’ attitude is an important factor that influences the quality of the implementation of inclusive education. The quality of inclusive education is part of the quality of education in general in a country. The quality of education of countries around the world is measured by the United Nations using the Human Development Index and placing countries in the very high, high, medium, and low categories. Systematic review was carried out to  get an idea of ​​the attitudes of teachers towards inclusive education and the factors that influence it in countries based on the HDI category. By using three electronic search engines for academic data, namely EBSCOhost, ProQuest, and Taylor & Francis Online, 18 articles reporting teacher attitudes towards inclusive education in various countries were discussed. The results found that there were no differences in teacher attitudes towards inclusive education between countries with very high and high HDI categories with countries in the moderate HDI category. Knowledge of children with disabilities and teaching experiences of these children is known to influence the attitudes of teachers towards inclusive education in countries with all HDI categories. The support from community, the availability of professional assistance, and the length of the implementation of inclusive education are factors that influence the attitudes of teachers in very high and high HDI categories countries, while the negative perception of disability makes teachers held negative attitudes towards inclusive education. Recommendations for improving the review of this topic are discussed in this study


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