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| Registros recuperados: 61 | |
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| Calvo,Jorge O.; Porfiri,Juan D.; González-Riga,Bernardo J.; Kellner,Alexander W.A.. |
| A unique site at the northern area of Patagonia (Neuquén, Argentina) reveals a terrestrial ecosystem preserved in a detail never reported before in a Late Cretaceous deposit. An extraordinary diversity and abundance of fossils was found concentrated in a 0.5 m horizon in the same quarry, including a new titanosaur sauropod, Futalognkosaurus dukei n.gen., n.sp, which is the most complete giant dinosaur known so far. Several plant leaves, showing a predominance of angiosperms over gymnosperms that likely constituted the diet of F. dukei were found too. Other dinosaurs (sauropods, theropods, ornithopods), crocodylomorphs, pterosaurs, and fishes were also discovered, allowing a partial reconstruction of this Gondwanan continental ecosystem. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dinosauria; Titanosauria; Ecosystem; Taphonomy; Upper Cretaceous; Gondwana; Patagonia; Argentina. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000300013 |
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| DEL-CLARO,KLEBER; TOREZAN-SILINGARDI,HELENA MAURA. |
| Abstract: As a focus for conservation efforts, biodiversity has received increased attention in the last fifty years. Searching for patterns in biodiversity, researchers have suggested studies including: ecological communities, cladistics classifications, hierarchical compositions of different levels of organization, and groups of taxonomically related species. Here, we propose that the study of the biodiversity of interactions may present a new perspective in the efforts to conserve biodiversity, especially in endangered ecosystems like the tropical savannas. We suggest that Cerrado, like other tropical savannas, is a particularly important ecosystem in which we can direct efforts to explain what determines the major part of variation in the outcomes of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ant-plant interactions; Ecosystem; Tropical savanna; Veredas. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000600614 |
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| Zhang,Zhenguo; Zhou,Jun. |
| ABSTRACT: Biodiversity plays a key role in human welfare by providing agricultural, economic, and health benefits. However, following the industrial revolution, the rapid expansion of the human population and subsequent economic activities have caused a dramatic loss in global biodiversity, resulting in significant disturbances to ecosystems and our own living conditions. Accordingly, the conservation of biodiversity has become one of the most important challenges for humanity. The vast numbers of plants, animals, and microorganisms, the enormous genetic diversity of these species and the different ecosystems to which these organisms belong are all part of a biologically diverse planet. A substantial proportion of the world’s biodiversity has been... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Ecosystem; Agriculture; Conservation; Genetics; Human welfare. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000500400 |
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| Casazza, Michael L; U.S. Geological Survey; mike_casazza@usgs.gov; Overton, Cory T; U.S. Geological Survey; coverton@usgs.gov; Bui, Thuy-Vy D; U.S. Geological Survey; tbui@usgs.gov; Hull, Joshua M; U.S. Fish and Wildlife Service; University of California, Davis; josh_hull@fws.gov; Albertson, Joy D; U.S. Fish and Wildlife Service; Joy_Albertson@fws.gov; Bloom, Valary K; U.S. Fish and Wildlife Service, Recovery Branch; valary_bloom@fws.gov; Bobzien, Steven; East Bay Regional Park District; sbobzien@ebparks.org; McBroom, Jennifer; Invasive Spartina Project; jtmcbroom@spartina.org; Latta, Marilyn; California State Coastal Conservancy; marilyn.latta@scc.ca.gov; Olofson, Peggy; San Francisco Estuary Invasive Spartina Project; prolofson@spartina.org; Rohmer, Tobias M; Invasive Spartina Project; Olofson Environmental Inc.; toby@spartina.org; Schwarzbach, Steven; U.S. Geological Survey; steven_schwarzbach@usgs.gov; Strong, Donald R; Department of Evolution and Ecology, University of California, Davis; drstrong@ucdavis.edu; Grijalva, Erik; University of California, Davis; ekgrijalva@ucdavis.edu; Wood, Julian K; Point Blue Conservation Science; jwood@pointblue.org; Skalos, Shannon M; U.S. Geological Survey; sskalos@usgs.gov; Takekawa, John; National Audubon Society; jtakekawa@audubon.org. |
| Management actions to protect endangered species and conserve ecosystem function may not always be in precise alignment. Efforts to recover the California Ridgway’s Rail (Rallus obsoletus obsoletus; hereafter, California rail), a federally and state-listed species, and restoration of tidal marsh ecosystems in the San Francisco Bay estuary provide a prime example of habitat restoration that has conflicted with species conservation. On the brink of extinction from habitat loss and degradation, and non-native predators in the 1990s, California rail populations responded positively to introduction of a non-native plant, Atlantic cordgrass (Spartina alterniflora). California rail populations were in substantial decline when the non-native Spartina... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Ecosystem; Endangered; Restoration; California Ridgway’ S Rail; Spartina. |
| Ano: 2016 |
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| Wallace, Rodrick; ; wallace@pi.cpmc.columbia.edu. |
| Ecosystem resilience theory permits novel exploration of developmental psychiatric and chronic physical disorders. Structured psychosocial stress, and similar noxious exposures, can write distorted images of themselves onto child growth, and, if sufficiently powerful, adult development as well, initiating a punctuated life course trajectory to characteristic forms of comorbid mind/body dysfunction. For an individual, within the linked network of broadly cognitive psysiological and mental subsystems, this occurs in a manner almost exactly similar to resilience domain shifts affecting a stressed ecosystem, suggesting that reversal or palliation may often be exceedingly difficult. Thus resilience theory may contribute significant new perspectives to the... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Chronic disease; Cognition; Comorbidity; Developmental disorder; Ecosystem; Resilience. |
| Ano: 2008 |
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| Иванов, В. А.; Любарцева, С. П.; Михайлова, Э. Н.; Шапиро, Н. Б.. |
| Обсуждается наш опыт моделирования экосистемы Черного моря. Трехкомпонентная модель экосистемы (планктон, биоген, детрит) объединяется с трехмерной гидротермодинамической моделью для исследования причинно-следственных связей между вынуждающими физическими силами и биогеохимической изменчивостью в приустьевой зоне Дуная. С учетом механизма физического переноса, фотосинтеза, смертности планктона, оседания и реминерализации детрита решаются уравнения типа адвекция-диффузия-реакция. Чтобы изучить влияние метеорологических условий на состояние экосистемы, было проведено три численных эксперимента: при отсутствии ветра и слабом (5 м/с) северо-восточном и северо-западном ветре. Была разработана объединенная трехмерная крупномасштабная модель Черного моря,... |
| Tipo: Journal Contribution |
Palavras-chave: Экосистема; Трехмерное численное моделирование; Верхний квазиоднородный слой; Азотный цикл; Приустьевая зона Дуная; Черное море; Ecosystem; 3D numerical modeling; Upper mixed layer; Nitrogen cycle; Danube’s mouth zone; The Black Sea Nitrogen cycle Ecosystems Nitrogen cycle Ecosystems http://aims.fao.org/aos/agrovoc/c_27938 http://aims.fao.org/aos/agrovoc/c_2482. |
| Ano: 2003 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/167 |
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| Еремеев, В. Н.; Иванов, В. А.; Ильин, Ю. П.. |
| Изложены основные особенности океанографического режима Керченского пролива, в том числе ветрового волнения, колебаний уровня моря, системы течений и водообмена, ледового режима, гидрохимических условий, транспорта наносов. Выделены существующие и потенциальные экологические проблемы, связанные с зарегулированием водообмена через пролив. Это дает основу для предварительного качественного анализа возможных последствий антропогенного вмешательства в сложную морскую экосистему, в частности – строительства дамбы в Тузлинской промоине. |
| Tipo: Journal Contribution |
Palavras-chave: Экосистема; Керченский пролив; Ветровое волнение; Уровень моря; Течения; Водообмен; Ледовый режим; Транспорт наносов; Эвтрофикация; Ecosystem; The Kerch Strait; Wind disturbance; Sea level; Currents; Water exchange; Ice; Alluviums transport; Eutrophication Eutrophication Ice Water exchange Sea level Eutrophication Ice Sea level http://aims.fao.org/aos/agrovoc/c_2734 http://aims.fao.org/aos/agrovoc/c_3782 http://aims.fao.org/aos/agrovoc/c_34115. |
| Ano: 2003 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/150 |
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| Registros recuperados: 61 | |
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