ASPEK BIOLOGI UBUR-UBUR API, Physalia physalis (LINNAEUS, 1758)

OSEANA ◽  
2020 ◽  
Vol 45 (2) ◽  
pp. 50-68
Author(s):  
Mochamad Ramdhan Firdaus

Physalia physalis is one of the jellyfish believed to be responsible for a significant proportion of jellyfish attack cases in the world. As one of the most dangerous members of the Cnidarian in the sea, P. physalis has a sting that can paralyze their prey. To humans, the sting can cause cardiotoxic, neurotoxic, musculartoxic, and hemolytic effects. P. physalis has different biological characteristics than most organisms. For example, an individual of P. physalis actually is a colony consisting of four groups of individuals who have different structures and functions. The arrangement of the colony has a complex structure and shows a polymorphism. P. physalis is a pleustonic organism because they live on the surface of the water. P. physalis still leaves many mysteries to scientists. For example, the life cycle of a P. physalis is not yet fully known. Besides, the diversity of P. physalis also still leaves questions among scientists. Some believe that P. physalis is monotypic, while others suspect there is cryptic diversity. Therefore, the study of P. physalis is very interesting, especially under the issue of climate change. Many scientists believe that jellyfish get benefit from increasing sea temperatures, so the population is predicted to increase. The high population of P. physalis threatens the sustainability of fish stocks in the ocean, mainly due to P. physalis are productive predators of fish larvae. This paper aims to provide information on the biological aspects of P. physalis, which are still limited in Indonesia.

2021 ◽  
Vol 55 (3) ◽  
pp. 114-115
Author(s):  
Katherine E. Mills ◽  
Lisa Kerr ◽  
David Reidmiller ◽  
Kanae Tokunaga

Abstract Marine fisheries provide protein, income, and employment for millions of people across the world, but future fisheries face multiple stressors, including climate change. To ensure continued flows of benefits from fisheries, we need modern, forward-looking ways of setting sustainability objectives that consider ecosystem carrying capacity, health of fish stocks, societal nutritional and economic needs, and equitable distribution of fishery benefits. Transdisciplinary teams of oceanographers, climatologists, ecologists, economists, data scientists, and decision scientists working together with fishery managers, municipal leaders, fishers, aquaculturists, and seafood supply chain businesses can reimagine sustainable fisheries in a changing world. Through coordinated, distributed research nodes, these types of teams will develop frameworks, information, infrastructure, and application pathways needed to ensure vibrant, resilient fisheries and fishing communities in healthy marine ecosystems in future decades.


Author(s):  
Панкадж Гупта

Изучая древние цивилизации, мы видим, что первобытный человек жил в гармонии с природой и уважал ее творения. Живопись, скульптура, архитектурные элементы и все изощренные формы искусства черпают вдохновение из природы, воплощают любовь к ней, восхищение ею и этику ее сохранения. Экодуховность возникает из осознания космичности мира, и ее популярность сегодня растет в связи с необходимостью пересмотреть отношения человека с природой, которая деградирует в ходе нарастающего экологического кризиса, изменения климата, глобального потепления. Буддизм, одна из древнейших мировых религий, подчеркивал ценность не только живых существ, но и их жизненного пространства. Картины танка используются для продвижения и усвоения идей буддизма среди учеников и монахов для описания исторических событий, иллюстрирования мифов, связанных с божествами, и описания полезных этно-биологических аспектов лекарственных растений и животных. Экодуховные элементы постоянно присутствовали в картинах танка и широко использовались в них, чтобы привить мысль о сохранении природы. На танка мы видим деревья, лианы, кусты, травы множество животных, таких как лошади, олени, слоны, львы, тигры, павлины и т. д. Все это демонстрирует глубокие связи между человеком и всеми творениями природы, и поэтому новое прочтение танка может помочь в выявлении пробелов современной человеческой цивилизации. В данной статье рассматривается экодуховная символика в картинах танка. The ancient civilizations of the world show how the primitive man lived in harmony with the nature and respected its elements. Painting, sculpture, architectural adornment, and the ornate art forms draw inspiration from nature and consequently impersonate love, admiration, and ethics of conservation. Eco-spirituality emerges from a realization of cosmic world and gaining the popularity owing to a need for reconsidering mans bond with nature, which has enfeebled due to growing environmental crisis, climate change, global warming that need to be handled. Buddhism, one of the ancient religions of the world, laid emphasis not only for valuing the living beings but also for their living spaces. Thangka are used to instil aspects of Buddhism among the learners and monks, describe the historical events, illustrate myths linked with the deities, and depict the useful ethno-biological aspects of medicinal plants and animals. Eco-spiritual elements remained the theme of Thangka paintings and are extensively used in these to instil the thought of conservation of ecology. A number of trees, creepers, shrubs, herbs are painted in Thangka paintings. In addition to this, the Thangka paintings depict a number of animals like, horses, deer, elephants, lions, tigers, peacock, etc. Relational values convey the connection between an individual and ecological attributes and this can help in recognizing the gaps and realizing the faults on the part of human civilization. The understanding of deep cognitive values hidden in the artwork, when appreciated and valued can provide an inclusive answer for negotiating suitable outcomes. This paper examines the eco-spiritual and elemental symbolism in Thangka paintings.


Author(s):  
William Halal

This chapter draws on forecasts from The TechCast Project to map out the beginning of the Space Age about 2050. The author's work on the Life Cycle of Evolution shows that the world is moving beyond the Knowledge Age, which began about AD 2000, and is now entering an Age of Consciousness about 2020. This seems to mark the culmination of civilization on Earth, when the planet reaches a stage of maturity needed to resolve historic threats such as climate change. If this passage to a unified global order is successful, it should mark the beginning of space exploration beyond the solar system. The commercialization of space will likely be well underway, and colonies established on the Moon and possibly Mars, solar satellites will likely be functioning, and space tourism will become normal. With Earth a stable civilization, attention should then turn to this final frontier of space. The intellectual resources of roughly 10 billion educated people will be drawn on to make the breakthroughs in our understanding of physics needed to travel to star systems.


2003 ◽  
Vol 79 (2) ◽  
pp. 219-222 ◽  
Author(s):  
Martin F Price

Mountains cover 24% of the Earth’s land surface, are home to 12% of the global population, and include 28% of the world’s forests. Mountain forests provide a wide range of benefits to both mountain and downstream populations, notably the protection of watersheds and of transport infrastructure. They are also important as centres of biodiversity; important sources of timber, fuelwood and non-wood products; places for tourism and recreation; and sacred places. Many are also being considered as possible carbon sinks to mitigate climate change. Mountain forests are subject to many forces of change, interacting in complex ways. The frequency of natural disturbances is increasingly influenced by human activities at local, regional, and global scales. Air pollution has influenced many forests downwind of industrial areas, but climate change represents a greater and highly unpredictable force for change. It will require new types of decisions by all stakeholders, and new forest management approaches and policies. The International Year of Mountains, 2002, presents a unique opportunity to foster greater co-operation to ensure that mountain forests continue to provide benefits to a significant proportion of the world’s population well into the 21st century and beyond. Key words: forests, sustainable development, mountains, climate change, co-operation


Author(s):  
Sabrina Bruno

Climate change is a financial factor that carries with it risks and opportunities for companies. To support boards of directors of companies belonging to all jurisdictions, the World Economic Forum issued in January 2019 eight Principlescontaining both theoretical and practical provisions on: climate accountability, competence, governance, management, disclosure and dialogue. The paper analyses each Principle to understand scope and managerial consequences for boards and to evaluate whether the legal distinctions, among the various jurisdictions, may undermine the application of the Principles or, by contrast, despite the differences the Principles may be a useful and effective guidance to drive boards' of directors' conduct around the world in handling climate change challenges. Five jurisdictions are taken into consideration for this comparative analysis: Europe (and UK), US, Australia, South Africa and Canada. The conclusion is that the WEF Principles, as soft law, is the best possible instrument to address boards of directors of worldwide companies, harmonise their conduct and effectively help facing such global emergency.


2020 ◽  
Author(s):  
Iúri Novaes Luna ◽  
Valéria De Bettio Mattos

This book, comprised of 13 chapters, presents papers which discuss the processes related to the career along one’s life cycle, from adolescents’ professional choices until processes of retirement. Notwithstanding the diversity of life and work contexts, present in the different chapters, they all somewhat correspond in their central purpose, presenting both perspectives and challenges related to contemporary career interventions. Some chapters address themes that are still seldom explored in national literature, while others discuss subjects that are long established in the area, however they are innovative. The authors study them in the context of changes in the world of work in the second decade of the 21st century, of the new career models and psychosocial processes that are linked to human development throughout life. The studies and practices in vocational guidance, career development and retirement, included in this book, are the results of research and practice in recent years carried out by professionals, professors and academics that in different ways have collaborated with the activities of LIOP - Laboratory of Information and Professional Guidance, at the Federal University of Santa Catarina.


2020 ◽  
pp. 161-165
Author(s):  
Bertram de Crom ◽  
Jasper Scholten ◽  
Janjoris van Diepen

To get more insight in the environmental performance of the Suiker Unie beet sugar, Blonk Consultants performed a comparative Life Cycle Assessment (LCA) study on beet sugar, cane sugar and glucose syrup. The system boundaries of the sugar life cycle are set from cradle to regional storage at the Dutch market. For this study 8 different scenarios were evaluated. The first scenario is the actual sugar production at Suiker Unie. Scenario 2 until 7 are different cane sugar scenarios (different countries of origin, surplus electricity production and pre-harvest burning of leaves are considered). Scenario 8 concerns the glucose syrup scenario. An important factor in the environmental impact of 1kg of sugar is the sugar yield per ha. Total sugar yield per ha differs from 9t/ha sugar for sugarcane to 15t/ha sugar for sugar beet (in 2017). Main conclusion is that the production of beet sugar at Suiker Unie has in general a lower impact on climate change, fine particulate matter, land use and water consumption, compared to cane sugar production (in Brazil and India) and glucose syrup. The impact of cane sugar production on climate change and water consumption is highly dependent on the country of origin, especially when land use change is taken into account. The environmental impact of sugar production is highly dependent on the co-production of bioenergy, both for beet and cane sugar.


2013 ◽  
Author(s):  
Sebastian Galiani ◽  
Manuel Puente ◽  
Federico Weinschelbaum

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