Literatura académica sobre el tema "Island giants"
Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros
Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Island giants".
Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.
También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.
Artículos de revistas sobre el tema "Island giants"
1
Itescu, Yuval, Johannes Foufopoulos, Rachel Schwarz, Petros Lymberakis, Alex Slavenko, Ioanna-Aikaterini Gavriilidi, Shai Meiri y Panayiotis Pafilis. "The Island of Extremes: Giants and Dwarfs on a Small Remote Island". Russian Journal of Herpetology 28, n.º 4 (1 de septiembre de 2021): 225–30. http://dx.doi.org/10.30906/1026-2296-2021-28-4-225-230.
Texto completoResumen
Body size evolution on islands is widely studied and hotly debated. Gigantism and dwarfism are thought to evolve under strong natural selection, especially on small remote islands. We report a curious co-occurrence of both dwarf and giant lizards on the same small, remote island (Plakida): the largest Podarcis erhardii (Lacertidae) and smallest Mediodactylus kotschyi sensu lato; Gekkonidae — the two commonest insular reptiles in the Aegean Sea. The geckos of Plakida have a peculiar tail-waving behavior, documented here for the first time in this genus. We suspect that P. erhardii evolved large size to consume geckos and the geckos evolved a unique tail-waving behavior as a defensive mechanism.
2
Brown, D. P., L. Basch, D. Barshis, Z. Forsman, D. Fenner y J. Goldberg. "American Samoa’s island of giants: massive Porites colonies at Ta’u island". Coral Reefs 28, n.º 3 (11 de abril de 2009): 735. http://dx.doi.org/10.1007/s00338-009-0494-8.
Texto completo
3
Hennekam, Jesse J., Roger B. J. Benson, Victoria L. Herridge, Nathan Jeffery, Enric Torres-Roig, Josep Antoni Alcover y Philip G. Cox. "Morphological divergence in giant fossil dormice". Proceedings of the Royal Society B: Biological Sciences 287, n.º 1938 (4 de noviembre de 2020): 20202085. http://dx.doi.org/10.1098/rspb.2020.2085.
Texto completoResumen
Insular gigantism—evolutionary increases in body size from small-bodied mainland ancestors—is a conceptually significant, but poorly studied, evolutionary phenomenon. Gigantism is widespread on Mediterranean islands, particularly among fossil and extant dormice. These include an extant giant population of Eliomys quercinus on Formentera, the giant Balearic genus † Hypnomys and the exceptionally large † Leithia melitensis of Pleistocene Sicily. We quantified patterns of cranial and mandibular shape and their relationships to head size (allometry) among mainland and insular dormouse populations, asking to what extent the morphology of island giants is explained by allometry. We find that gigantism in dormice is not simply an extrapolation of the allometric trajectory of their mainland relatives. Instead, a large portion of their distinctive cranial and mandibular morphology resulted from the population- or species-specific evolutionary shape changes. Our findings suggest that body size increases in insular giant dormice were accompanied by the evolutionary divergence of feeding adaptations. This complements other evidence of ecological divergence in these taxa, which span predominantly faunivorous to herbivorous diets. Our findings suggest that insular gigantism involves context-dependent phenotypic modifications, underscoring the highly distinctive nature of island faunas.
4
Agenbroad, Larry D. "Giants and pygmies: Mammoths of Santa Rosa Island, California (USA)". Quaternary International 255 (marzo de 2012): 2–8. http://dx.doi.org/10.1016/j.quaint.2011.03.044.
Texto completo
5
Gazzini, L., S. Gazzini y V. Dallari. "The mystery of easter’s island giants and their acromegalyc facies". Journal of Endocrinological Investigation 44, n.º 10 (11 de febrero de 2021): 2325–26. http://dx.doi.org/10.1007/s40618-021-01521-8.
Texto completo
6
Van Epps, Heather L. "Singapore's multibillion dollar gamble". Journal of Experimental Medicine 203, n.º 5 (15 de mayo de 2006): 1139–42. http://dx.doi.org/10.1084/jem.20060895.
Texto completoResumen
Biopolis, Singapore's futuristic research hub. How does a country one-fourth the size of Rhode Island with little history in biomedical science become one of the world's biomedical research giants? The answer: with a pile of money and a large dose of chutzpah. Since 2000, Singapore has dumped more than US$2 billion into developing a biomedical research industry—from scratch. Is the gamble paying off?
7
Geist, Valerius. "On speciation in Ice Age mammals, with special reference to cervids and caprids". Canadian Journal of Zoology 65, n.º 5 (1 de mayo de 1987): 1067–84. http://dx.doi.org/10.1139/z87-171.
Texto completoResumen
Five types of species can be identified in large mammals. The evolution of three types, Ice Age giants, island dwarfs, and hybrids, can be explained, but not that of tropical food specialists and continental paedomorphs. Ice Age giants, which arose while colonizing latitudes (altitudes) with increasingly seasonal climates and productivity pulses, are characterized by ornate social organs, large bodies, and ecological plasticity. Colonizing landscapes with decreasing seasonality appears to conserve (or re-evolve) primitiveness, producing paedomorphs. Island dwarfs appear to be shaped by efficiency selection in the absence of predators. The explanation of mammalian Ice Age evolution hinges on the sensitivity of mammals to environmental factors, in particular nutrition. Extremes in food abundance generate extremes in phenotypes and selection regimes. Abundance is linked to colonization and selection for new social and ecological adaptations; scarcity is typical of settled areas and maintenance regimes. These select for efficiency in the procurement, processing, and use of food. Rapid speciation is predicted during colonization, followed by a gradual, continuous fine tuning of the ecology of the new form. Neither the punctuated nor the gradualistic model of speciation adequately explains evolution in large mammals. Early predictions of the "dispersal hypothesis" of mammalian evolution have now been tested for caprids. Results from cytogenetic, electrophorectic, and immunodiffusion studies support the dispersal hypotheses.
8
Fernando, Edwino S., John Michael M. Galindon y Perry S. Ong. "Rafflesia consueloae (Rafflesiaceae), the smallest among giants; a new species from Luzon Island, Philippines". PhytoKeys 61 (25 de febrero de 2016): 37–46. http://dx.doi.org/10.3897/phytokeys.61.7295.
Texto completo
9
Hosner, Peter A., Joseph A. Tobias, Edward L. Braun y Rebecca T. Kimball. "How do seemingly non-vagile clades accomplish trans-marine dispersal? Trait and dispersal evolution in the landfowl (Aves: Galliformes)". Proceedings of the Royal Society B: Biological Sciences 284, n.º 1854 (3 de mayo de 2017): 20170210. http://dx.doi.org/10.1098/rspb.2017.0210.
Texto completoResumen
Dispersal ability is a key factor in determining insular distributions and island community composition, yet non-vagile terrestrial organisms widely occur on oceanic islands. The landfowl (pheasants, partridges, grouse, turkeys, quails and relatives) are generally poor dispersers, but the Old World quail ( Coturnix ) are a notable exception. These birds evolved small body sizes and high-aspect-ratio wing shapes, and hence are capable of trans-continental migrations and trans-oceanic colonization. Two monotypic partridge genera, Margaroperdix of Madagascar and Anurophasis of alpine New Guinea, may represent additional examples of trans-marine dispersal in landfowl, but their body size and wing shape are typical of poorly dispersive continental species. Here, we estimate historical relationships of quail and their relatives using phylogenomics, and infer body size and wing shape evolution in relation to trans-marine dispersal events. Our results show that Margaroperdix and Anurophasis are nested within the Coturnix quail, and are each ‘island giants’ that independently evolved from dispersive, Coturnix -like ancestral populations that colonized and were subsequently isolated on Madagascar and New Guinea. This evolutionary cycle of gain and loss of dispersal ability, coupled with extinction of dispersive taxa, can result in the false appearance that non-vagile taxa somehow underwent rare oceanic dispersal.
10
Shirdan, Leon. "ISLAND HARBOURS AND THEIR INFLUENCE ON ADJACENT SHORES". Coastal Engineering Proceedings 1, n.º 7 (29 de enero de 2011): 45. http://dx.doi.org/10.9753/icce.v7.45.
Texto completoResumen
The purpose of this paper is to put forward an alternative solution to the problem of reconstitution of existing ports, generally too shallow for the large tankers and ore carriers. Usually, the existing moles are extended to deep water fairways and approaches to berths, docks and basins, dredged and adapted to the draught of the new giants. This is connected with enormous expenses. Sometimes completely new port units, as for instance Europort, are built. The Island Harbours, with their seaward position, will reduce the length of the shipway to the berths and thus provide a speedier turn-out of vessels. The cost of erection and maintenance of such a harbour is in most cases lower than in that of a conventional solution, due to short breakwaters and limited quantities of primary and maintenance dredging operations. Different alternatives of island ports can be adapted in most sandy coasts over the world. The changes in coastal regime which may result from erecting an island harbour connected with the mainland by a bridge or a causeway can turn out profitable for general cargo ships, and even fisherboats, especially on the coasts where till now cutting the sea approaches through the shallows and bars was often unacceptable, due to the enormous expenses involved.
Tesis sobre el tema "Island giants"
1
Walker, Kevin R. "Climatic Dependence of Terrestrial Species Assemblage Structure". Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/23697.
Texto completoResumen
An important goal of ecological studies is to identify and explain patterns or variation in species assemblages. Ecologists have discovered that global variation in the number of species in an assemblage relates strongly to climate, area, and topographic variability in terrestrial environments. Is the same true for other characteristics of species assemblages?
The focus of this thesis is to determine whether species assemblage structure, defined primarily as the body mass frequency distributions and species abundance distributions relate in convergent ways to a set of a few environmental variables across broad spatial scales.
First, I found that for mammals and trees most of their geographic variation across North and South America in assemblage structure is statistically related to temperature, precipitation, and habitat heterogeneity (e.g. different vegetation types) in convergent ways.
I then examined bird assemblages across islands and continents. Despite the evolutionary and ecological differences between island and continental assemblages, I found that much of the variation in bird assemblage structure depends on temperature, precipitation, land area, and island isolation in congruent patterns in continent and island bird assemblages.
Frank Preston modeled species richness based on the total number of individuals and the number of individuals of the rarest species. Building on Preston’s model, Chapter 2 hypothesized that gradients of diversity correlate with gradients in the number of individuals of the rarest species, which in turn are driven by gradients in temperature and precipitation. This hypothesis assumes that species abundance distributions relate to temperature and precipitation in similar ways anywhere in the world. I found that both the number of individuals of the rarest species (m) and the proportion of species represented by a single individual in samples of species assemblages (Φ) were strongly related to climate. Moreover, global variation in species richness was more strongly related to these measures of rarity than to climate. I propose that variation in the shape of the log-normal species abundance distribution is responsible for global gradients of species richness: rare species (reflected in m and Φ) persist better in benign climates.
Even though body mass frequency distributions of assemblages show convergent patterns in relation to a set of a few environmental variables, the question remains as to what processes are responsible for creating the geographical variation in the body-size distribution of species. Several mechanisms (e.g. heat conservation and resource availability hypotheses) have been proposed to explain this variation. Chapter 5 tested and found no empirical support for the predictions derived from each of these mechanisms; I showed that species of all sizes occur across the entire temperature gradient.
In conclusion, assemblage structure among various taxonomic groups across broad spatial scales relate in similar ways to a set of a few environmental variables, primarily mean annual temperature and mean annual precipitation. While the exact mechanisms are still unknown, I hypothesize several to explain the patterns of convergent assembly.
Résumé
Un but important de l'écologie est d'identifier et d'expliquer la variation de premier ordre dans les caractéristiques des assemblages d'espèces. Un des patrons ayant déjà été identifié par les écologistes, c'est que la variation mondiale de la richesse en espèces est liée à la variation du climat, de l'aire et de la topographie. Est-ce que d'autres caractéristiques des assemblages d'espèces peuvent être reliées à ces mêmes variables?
Le but de cette thèse est de déterminer si la structure des assemblages d'espèces, ici définie comme la distribution des fréquences de masse corporelle ainsi que la distribution d'abondances des espèces, est reliée de manière convergente à un petit ensemble de variables environnementales, et ce, partout dans le monde.
D'abord, j'ai déterminé que, pour les mammifères et les arbres, la majorité de la variation géographique dans la structure des assemblages d'espèces est reliée statistiquement à température, précipitation, et l’hétérogénéité du couvert végétal , et ce, de manière convergente pour l'Amérique du Nord et du Sud.
Je me suis ensuite penché sur l'assemblage des oiseaux sur les îles et les continents. Malgré les larges différences évolutives et écologiques qui distinguent les îles des continents, je démontre que la majorité de la variation dans la structure des assemblages d'oiseaux dépend de la température, la précipitation, la superficie et l’isolation de façon congruente sur les îles et les continents.
Frank Preston a modélisé la richesse en espèces d'une localité, basée sur le nombre total d'individus ainsi que le nombre d'individus de l’espèce la plus rare. En s'appuyant sur les modèles de Preston, Chapître 3 propose une nouvelle hypothèse voulant que les gradients de diversité dépendent des gradients du nombre d'individus de l’espèce la plus rare. Celle-ci dépend des gradients de température et de précipitation. Cette hypothèse repose sur le postulat que la distribution d’abondances des espèces dépend de la température et la précipitation, et ce, de la même manière n’importe où au monde. J’ai mis en évidence que le nombre d’individus de l’espèce la plus rare (m), ainsi que la proportion d’espèces représentées par un individu unique () dans des échantillons locaux étaient fortement reliés au climat. D’ailleurs, la variation globale de la richesse en espèces était plus fortement reliée à ces indices de rareté qu’au climat. Je propose que la variation dans la forme de la distribution log-normale d’abondances d’individus soit responsable des gradients mondiaux de richesse en espèces. En d’autres mots, les espèces rares (indiquées par m et ) persistent mieux dans des climats bénins.
Malgré que la distribution des fréquences de masse corporelle des assemblages d'espèces soit liée de manière convergente à seulement quelques variables environnementales, la question demeure à savoir quels processus sont responsables des gradients géographiques de variation en masse corporelle des espèces. Plusieurs mécanismes ont été proposés pour expliquer cette variation. Dans Chapitre 5, j'ai testé les prédictions dérivées de chacun de ces mécanismes sans trouver de support empirique pour aucun. Je démontre aussi que des espèces de toutes tailles se retrouvent sur le gradient de température en entier.
En conclusion, la structure des assemblages d'espèces, pour différents groupes taxonomiques et à travers le monde, est liée de façon similaire à un petit nombre de variables environnementales. Bien que les mécanismes soient encore inconnus, j'en propose plusieurs pouvant expliquer ces patrons d'assemblages convergents.
2
Mahler, D. Luke, Shea M. Lambert, Anthony J. Geneva, Julienne Ng, S. Blair Hedges, Jonathan B. Losos y Richard E. Glor. "Discovery of a Giant Chameleon-Like Lizard (Anolis) on Hispaniola and Its Significance to Understanding Replicated Adaptive Radiations". UNIV CHICAGO PRESS, 2016. http://hdl.handle.net/10150/621299.
Texto completoResumen
We report a new chameleon-like Anolis species from Hispaniola that is ecomorphologically similar to congeners found only on Cuba. Lizards from both clades possess short limbs and a short tail and utilize relatively narrow perches, leading us to recognize a novel example of ecomorphological matching among islands in the well-known Greater Antillean anole radiation. This discovery supports the hypothesis that the assembly of island faunas can be substantially deterministic and highlights the continued potential for basic discovery to reveal new insights in well-studied groups. Restricted to a threatened band of midelevation transitional forest near the border of the Dominican Republic and Haiti, this new species appears to be highly endangered.
3
Van, Tussenbroek B. I. "Some aspects of the biology of the giant kelp, Macrocystis pyrifera, in the Falkland Islands". Thesis, University of Liverpool, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233865.
Texto completo
4
Ånäs, Kristoffer. "The Significance of Giant Flank Collapses on Magma Ascent in the NE Rift Zone of Tenerife, Canary Islands: A Structural Modelling and Diffusion Approach". Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-438578.
Texto completoResumen
On the volcanic ocean island Tenerife in the Canary archipelago, several giant flank collapses haveoccurred over the last one million years. The link between the lateral collapses and the resultingvolcanism in the rift zones is not fully understood and was investigated within the framework of thisproject. A field survey along the north eastern rift zone on Tenerife was performed, where dyke intrusionstructural data was collected to analyse the exact distribution of dykes in the area. To determine themagma ascent rate, diffusion analysis of major elements in olivine crystals was conducted incollaboration with ETH Zürich. Additionally, analogue gelatine model experiments were performed toimprove the understanding of the processes that reconfigure linear rift zones to triaxial or multiaxial riftzones. Injections of fluid into the gelatine ridges produced fractures which mainly were linear andfollowed the along strike direction. Position A’ in the centre of the unstable section, produced the mostdiverse injection patterns and had a roughly 30 % higher acceleration compared to position A, positionedat the border of the unstable section. From the results of the diffusion modelling of Mg in olivinephenocrysts an ascent rate of the magma was calculated to an average ascent velocity of 10.4–14.0 km/h.This is extremely fast and suggests that the Orotava collapse is strongly connected to the formation ofankaramite dykes in the area as a result of sudden decrease in the lithostatic pressure.På vulkanön Teneriffa i den kanariska övärlden har flera jättelika skred skett. Kopplingen mellan dessaskred och vulkanismen i sprickzonerna på ön har undersökts inom ramen för detta arbete. Enfältundersökning genomfördes längs den nordöstra sprickzonen på Teneriffa, där data ommagmagångarnas orientering och läge insamlades. För att bestämma hur snabbt magman steg till ytan,genomfördes diffusionsanalys av Mg i olivinkristaller från ankaramitgångar i samarbete med ETH iZürich. Utöver det utfördes även experiment med analoga gelatinmodeller för att förbättra förståelsenför de processer som förändrar linjära riftzoner till treaxliga eller fleraxliga riftzoner. Injiceringen avvätskan i gelatinmodellerna producerade sprickor som i huvudsak var linjära och följde strykriktningenpå riftzonen. Position A’, i mitten av den instabila sektorn i modellen gav högst variation avinjiceringarna och hade omkring 30 % högre acceleration jämfört med position A placerad i kanten avden instabila sektorn. Baserat på resultatet av diffusionsmodelleringen kunde en uppstigningshastighetför magman beräknas till en medelhastighet på 10,4–14,0 km/h. Detta är extremt snabbt och visar attkollapsen av Orotava är starkt kopplad till bildningen av ankaramitgångar i området som ett resultat aven plötslig minskning av det litostatiska trycket.
5
Boulesteix, Thomas. "Age, récurrence et mécanismes de déstabilisation des flancs des volcans océaniques d'après l'exemple de Tenerife (iles Canaries)". Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112174/document.
Texto completoResumen
La croissance des volcans océaniques est fréquemment ponctuée par des effondrements latéraux géants qui peuvent générer des avalanches de débris volumineuses et engendrer des tsunamis dévastateurs. Néanmoins, les causes, les mécanismes et les conséquences de telles déstabilisations, critiques pour la caractérisation des aléas, demeurent largement incompris.L'île de Tenerife (Canaries, Espagne) constitue une cible privilégiée pour étudier ces phénomènes. Son évolution récente inclue le développement d'un volcan central différencié et d'une ride volcanique proéminente le long d'une rift-zone principale NE-SW (NERZ). Durant le dernier Myr, ces systèmes ont été tronqués par trois effondrements de flanc géants, dont la semelle est partiellement accessible à la faveur de galeries souterraines à usage hydrogéologique.Cette thèse développe une analyse systématique des relations entre construction volcanique et instabilités récurrentes le long de l’axe de la NERZ. L'approche inclut des investigations de terrain en surface et dans les galeries, afin de reconnaître et d’échantillonner les séquences volcaniques affectées par chaque effondrement et remplissant leurs structures; la datation K/Ar Cassignol-Gillot sur phases séparées pour en contraindre l’âge précisément ; des reconstructions morphologiques 3D afin d'estimer le volume des édifices et des structures gravitaires; des analyses chimiques sur roches totales, visant à caractériser l’évolution de la composition des laves avant et après chaque déstabilisation.Les nouveaux résultats montrent le fonctionnement intermittent des différents tronçons la NERZ, avec un schéma récurrent comprenant :1) la croissance rapide d'un édifice imposant, dont la charge induit la création de niveaux de stockage superficiels et l’éruption de termes différenciés visqueux, favorisant l'inflation locale de la structure et sa déstabilisation2) la rupture proprement dite, datée à environ 840 ka, 525 ka et 175 ka (glissements de Güimar, La Orotava et Icod, respectivement)3) une réponse éruptive immédiate, impliquant la vidange rapide (<50kyr) du système d’alimentation, et le comblement des loupes de glissement sous des dizaines de km3 de lave.4) Un déplacement consécutif de la construction volcanique vers les secteurs moins matures de la NERZ (moindre épaisseur de l'édifice/moindre pression lithostatique)Nous montrons que les phénomènes de charge/décharge ont une influence primordiale sur le développement des instabilités gravitaires et l'évolution des systèmes d'alimentation des îles océaniquesThe growth of oceanic volcanoes is frequently punctuated by large flank collapses, which can generate voluminous debris avalanches and destructive tsunamis. The causes, the mechanisms and the consequences of such instabilities, crucial for risk assessment, remain poorly understood.Tenerife (Canary Islands, Spain) is a target of particular interest to study such phenomena. Its recent evolution includes the development of a large silicic central volcano and a prominent volcanic ridge along a main NE-SW trending rift zone (NERZ). During the last Myr, these volcanic systems have been truncated by three large flank collapses, the base of which is partly accessible through underground water mining galleries.This thesis develops a systematic analysis of the relationships between volcanic construction and recurrent flank instabilities along the NERZ. Our approach includes field investigations at the surface and in the galleries to identify and sample the volcanic units affected by each landslide and the successions filling their scar; unspiked K/Ar dating (Cassignol-Gillot technique) on fresh separated groundmass to constrain precisely the timing of the landslides; 3-D morphological reconstructions to estimate the volume of the edifices and landslides structures; and whole-rock geochemical analyses to characterize the compositional evolution of the magma prior to and after each collapse event.Our new results show the intermittent functioning of the various sections of the NERZ with a recurrent pattern comprising:(1) The rapid construction of a large volcanic edifice. The resulting load favors the creation of superficial storage levels, the associated evolution of the magma and the eruption of viscous differentiated terms, favoring local inflation of the structure and its destabilization(2) The collapse of a flank of the NERZ, dated at ca. 840 ka, 525 ka, and 175 ka (Güimar, La Orotava and Icod, events respectively)(3) An immediate eruptive response, implying the rapid emptying (<50kyr) of the feeding system and the filling of the landslide scars under tens of km3 of lava.(4) The subsequent displacement of volcanic activity towards the less mature sectors (lower thickness/lower lithostatic pressure).We show here that loading/unloading processes have a strong influence on the development of gravitational instabilities and the evolution of the magma feeding systems on such large intraplate volcanic islands
6
Bushing, William W. "The use of satellite remote sensing and a geographic information system (GIS) to characterize regions of persistent giant kelp (Macrocystis pyrifera) around Santa Catalina Island for designation as marine reserves". 1996. http://catalog.hathitrust.org/api/volumes/oclc/50649815.html.
Texto completo
7
Panisi, Martina. "Biological invasion and the conservation of endemic island species: São Tomé Archachatina giant snails (Pulmonata: Achatinidade)". Master's thesis, 2017. http://hdl.handle.net/10451/31613.
Texto completoResumen
Tese de mestrado em Biologia da Conservação, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2017A perda global de biodiversidade é uma das maiores consequências das atividades humanas. As ilhas são hotspots mundiais de biodiversidade, com elevado grau de espécies endémicas, mas os seus ecossistemas são também dos mais suscetíveis às alterações antrópicas. A introdução de espécies exóticas é a principal causa de extinções em ilhas, agravada quando em sinergia com outros fatores, como a alteração do tipo de uso do solo. Os moluscos são um dos grupos animais com mais extinções, e os caracóis terrestres, em particular, sofreram o maior número de extinções devido às atividades humanas. Estes organismos são excelentes bioindicadores da qualidade do habitat, exatamente porque são muito vulneráveis às alterações ambientais. Por outro lado, também existem diversas espécies de caracóis terrestres com grande capacidade invasora, e que se adaptam muito bem a habitats humanizados. A introdução de várias espécies de caracóis gigantes africanos (géneros Achatina e Archachatina) fora do continente resultou em danos na agricultura, problemas sanitários e ameaças para os ecossistemas nativos. Estes animais têm hábitos noturnos, são polífagos e hermafroditas, produzindo grandes quantidades de ovos, sendo muito procurados para fins medicinais, ornamentais, como animais de estimação e, por fim, pelo considerável valor, sobretudo no território africano, como recurso alimentar. A ilha de São Tomé está situada a 255 km da costa Oeste africana, no Golfo da Guiné, e tem uma área de 857 km2. É caraterizada por uma elevada humidade e precipitações que podem chegar até aos 7000 mm anuais no Sudoeste. As temperaturas médias anuais variam entre os 22 e os 30°C, com mínimas de 10°C em elevada altitude. Originalmente dominada por floresta, intensas modificações da paisagem ocorreram desde a sua descoberta e colonização, no final do século XV. Podemos atualmente identificar um gradiente de degradação ambiental ao longo da ilha: áreas não florestadas sobretudo junto à costa, seguidas por plantações de sombra, onde se cultiva o cacau e o café, a floresta secundária, que resulta em grande parte do abandono de antigas plantações e onde plantas nativas e exóticas coexistem e, por fim, a floresta nativa, nas zonas mais inacessíveis do interior da ilha, que permanece quase intocada pelas atividades humanas e alberga uma elevada taxa de espécies endémicas. Apesar da sua reduzida extensão territorial, a ilha é reconhecida internacionalmente pelo elevado número de endemismos em diversos grupos taxonómicos, tais como aves, anfíbios, plantas superiores, morcegos, répteis, borboletas e moluscos. Destes últimos, São Tomé conta com 40 espécies de moluscos, 31 dos quais são endémicos. O caracol gigante do Golfo da Guiné Archachatina bicarinata (Bruguière, 1792), ou búzio-d’Obô, é uma espécie endémica das ilhas de São Tomé e Príncipe e tem sofrido um declínio acentuado em ambas as ilhas nas últimas décadas. A introdução do caracol gigante do Oeste africano Archachatina marginata (Swainson, 1821), ou búzio-vermelho, está entre as prováveis causas desse declínio. No primeiro capítulo desta tese avaliamos quais os fatores que explicam a distribuição do caracol gigante introduzido em São Tomé. O amplo gradiente de degradação ambiental que existe na ilha providencia condições excelentes para se compreender as ligações entre a distribuição desta espécie e a humanização da paisagem. Verificámos que este caracol existe em quase toda a ilha, preferindo plantações e florestas secundárias de baixa altitude, e evitando as zonas de floresta nativa. A sua presença está associada a plantas introduzidas, típicas de ecossistemas degradados, e a sua população encontra-se em expansão, com elevada proporção de indivíduos juvenis, em especial nas zonas mais degradadas. Este estudo é uma contribuição essencial para o planeamento de medidas de conservação que visem limitar a ação da espécie invasora nos ecossistemas mais suscetíveis da ilha e serve também como um alerta para a necessidade de proteger a sua floresta nativa e as espécies que nela habitam. No segundo capítulo avaliamos as possíveis interações entre o caracol gigante nativo e o invasor. Recolhemos diversos relatos que associam 31o desaparecimento do endémico à expansão do invasor ao longo do tempo. Documentamos uma forte segregação entre as duas espécies em termos espaciais, sendo que o endémico se encontra restrito às florestas nativas mais remotas, enquanto que o invasor se encontra maioritariamente em áreas mais degradadas, ocupando uma proporção muito mais significativa da ilha. As duas espécies estão associadas a vegetações totalmente diferentes, estando a endémica associa13da a flora endémica, e a introduzida a flora exótica, por sua vez igualmente associada a habitats antrópicos. A população atual do búzio-vermelho é composta por uma elevada proporção de juvenis, em contraste com a do endémico, em que claramente predominam os adultos. Finalmente, registámos diferenças nos padrões de atividade diária de ambas as espécies, com o endémico a ser principalmente diurno e o invasor a preferir estar ativo durante a noite. Os nossos resultados sugerem que o declínio acentuado do búzio-d’Obô pode estar relacionado com a introdução do búzio-vermelho, representando o primeiro estudo dedicado à ecologia e distribuição destas espécies em São Tomé. Este estudo sugere que o grau de ameaça do búzio-d’Obô deve ser aumentado, bem como a necessidade urgente de implementar medidas de ação de conservação que assegurem a sua sobrevivência.
The global loss of biodiversity is a major consequence of human activities. Habitat destruction and the introduction of non-native species are among the principal drivers of this loss. Knowing the ecology of invasive species, namely their habitat preferences, distribution and potential interactions with local biodiversity, is thus fundamental for ecosystem management and for minimizing negative impacts. São Tomé Island holds an endemic-rich land snail fauna, including the Vulnerable Gulf of Guinea Giant Land Snail Archachatina bicarinata (Bruguière, 1792). This species was relatively widespread and abundant in the island, but its population has suffered a steep decline since mid-twentieth century. The introduction of the West African Giant Land Snail A. marginata (Swainson, 1821) has been implied in this decline, but very little is known about its dispersal or about its effects on native species. This thesis aims to assess the links between the dispersal of the introduced giant snail and human-modified ecosystems, and if this species is displacing the endemic giant snail. We found that the introduced giant snail is widely distributed throughout most of the island, preferring lowland plantations and other modified ecosystems rich in introduced plants. There was a strong spatial segregation between the two species, the endemic being restricted to the most remote patches of native forest. The invasive appeared to be expanding, having a large proportion of juveniles in its population, while the endemic showed the opposite trend. We also observed a temporal displacement between the occurrence of the two species: the endemic being active mostly during the day and the invasive principally around dusk and dawn. This was the first study on the ecological interaction between these two species. The small overlapping area in their distributions and the perceptions of local inhabitants suggest that the introduced snail is displacing the endemic. Gain01ing a better understanding of the mechanisms underlying this invasion process is essential to prevent its spread into the native forest. Immediate conservation actions aimed to preserve the endemic snail are necessary to halt its dramatic population collapse, which may warrant an uplisting of its conservation status.
8
Raza, Ayesha. "Bodies, Saracen giants, and the medieval romance : transgression, difference, and assimilation". Thèse, 2012. http://hdl.handle.net/1866/8341.
Texto completoResumen
Bodies, Saracen Giants, and the Medieval Romance: Transgression, Difference, and Assimilation explore le traitement des corps de trois géants Sarasins dans les romances de Roland and Vernagu (c. 1330), Sir Beues of Hamtoun (c. 1330), et The Taill of Rauf Coilyear (c. 1513-42).Grâce à une étude de la représentation de ces trois géants Sarasin, la signification du corps humain au Moyen Age, et des pratiques de la Chrétienté an accord avec les discours et idéologies envers le Proche-Orient qui existaient dans l’Occident médiéval, ce mémoire de maîtrise juxtapose le géant Sarasin et le héros de la romance pour indiquer une similarité apparente entre leur deux corps et leur religion respective. La romance démontre avec hésitation un désir d’assimiler le géants Sarasin dans le code héroïque ainsi que dans la religion chrétienne, mais souvent rejette avec suspicion le corps du géant par sa mort sur le champ de bataille. Malgré sa mort ou son assimilation dans le code héroïque et la Chrétienté, le corps du géant Sarasin demeure toujours important dans le contexte de la Romance, puisqu’il contribue à la construction de l’identité du héros, de sa foi, et de sa société.Bodies, Saracen Giants, and the Medieval Romance: Transgression, Difference, and Assimilation explores the treatment of the bodies of three Saracen giants in the romances of Roland and Vernagu (c. 1330), Sir Beues of Hamtoun (c. 1330), and The Taill of Rauf Coilyear (c. 1513-42). Through a study of the characterization of the three Saracen giants, the significance of the human body in the Middle Ages, and the practices of Christianity in accordance with the discourses and ideologies regarding the near East that existed in the medieval West, this thesis addresses how and why the romance constructs the giant as a physical marker of excess, deviance and evil. Using theories and criticisms of subjectivity and embodiment, this thesis juxtaposes the Saracen giant with the romance hero to underline an obvious similarity between the two bodies and their respective religions. The romance hesitantly demonstrates a desire to assimilate Saracen giants into the heroic code as well as the Christian religion, but it often distrustfully chooses to remove the giant body through its death in battle. Regardless of its death or assimilation into the heroic code and Christianity, the Saracen giant's body forever remains meaningful for the romance, as it always contributes to the construction of the romance hero's identity, faith and society.
9
Cosgrove, James Albert. "Aspects of the natural history of Octopus dofleini, the giant Pacific octopus". Thesis, 1987. http://hdl.handle.net/1828/12155.
Texto completoResumen
A two part project spanning four and one half years was designed to investigate a number of aspects of the natural history of Octopus dofleini in the Northeast Pacific.
The tag-release recapture (Part I) involved weekly SCUBA dives, during daylight hours, at three sites on Southern Vancouver Island, British Columbia, Canada. A total of 320 octopuses were sighted during 616 dives (Part I) and 151 of those octopuses were tagged or recaptured.
The ratio of dives per octopus sighted was 1.93:1 and the ratio of dives per octopus tagged or recaptured was 4.08:1. A total of 98 octopuses were tagged (Part I) and 30 of those octopuses were recaptured two or more times for a recapture rate of 30.61%.
Statistical analysis of data weighted to provide uniform effort showed Site 1 (Tanner Rock) to have a significantly greater number of large octopuses while Site 2 (Tozier Rock) had a significantly greater number of very small octopuses.
An analysis of the data on octopus sex ratios found no significant difference between the number of males and females at each site even though there had been a significant difference in the ratio within Site 2.
Analysis of data on annual distribution of octopus body weight combined with the results from the recapture of individual octopuses led to the proposal of a four year lifespan for female Octopus dofleini and an undetermined, but longer, lifespan for males of the species.
An examination of the data on octopus movement showed that a peak number of small octopuses (approximately 250 g) appeared at the sites in February. The evidence showed that over the next 19 to 22 months the octopuses grew from approximately 250 grams to a pre adult body weight of 13.8 kg for males (in September) and 14.7 kg for females (in December).
No octopuses between 16 and 19.5 kg were captured suggesting a movement of octopuses of that body weight away from the sites. Small numbers of octopuses weighing between 19.5 kg and 28 kg were captured mainly during the first half of the year.
An analysis of octopus position data showed that Octopus dofleini does not maintain a constant distance from its nearest neighbour. Nearest neighbour distance was not significantly influenced by the size or sex of the neighbour nor by changes in water temperature. A highly significant correlation was found between estimated den volume and octopus body weight. There were no significant relationships between den surroundings, number of exits, den type and den depth when compared to den usage suggesting that Octopus dofleini is an opportunistic animal using whatever shelter of appropriate volume it discovers.
The major food item at all sites as determined by midden heap contents was the Red Rock Crab, Cancer productus.
An examination of the physical condition of each octopus captured revealed 21.2% of the animals had either scars or amputated arms or both.
Correlations examining the relationships between water temperature and growth rate, body weight, sex and nearest neighbour distance were nonsignificant.
Part 11 of the project was the physical measuring and describing of each den at each site. During the 126 SCUBA dives done another 127 octopuses were sighted. As octopuses were captured only when it was necessary to examine the inside of the den there were only 11 octopuses captured during the second part of the project.
In total, 447 octopuses were sighted during 742 dives. This results in an effort per octopus sighted of 1.66 dives per octopus.Graduate
10
Couraud, Logan Baptiste. "Giant kelp forests of the Falkland Islands - a metapopulation structured by past historical colonization events and by present habitat continuity and oceanographic transportation". Master's thesis, 2021. http://hdl.handle.net/10400.1/15362.
Texto completoResumen
The genetic structure of Macrocystis pyrifera around the Falkland Islands and the Magallean region was determined. In fact, genetic discontinuities related to biogeographic breaks and the role of predictors such as habitat continuity, dispersal, oceanographic currents, and bathymetry were assessed to understand the metapopulation’s structure around the Falklands. In total, 9 microsatellites and one mitochondrial marker were used to genotyped 433 individuals from 22 different populations. Nuclear DNA and Mitochondrial DNA analysis were carried out to comprehend the effects of historical and contemporary effects on species distribution and range shifts. At a large scale, the analysis shows that Macrocystis pyrifera is subdivided into four main genetic clusters, one in the Magallean region, two in the Falkland Islands, and one in South Africa. Furthermore, populations in the Magallean region have displayed a low genetic diversity that can be linked to recent colonization events while around the Falklands a higher genetic diversity have been found that may reflect historical events. The role played by the Falkland Islands as a refugia for this species is well supported by the phylogeographic structure. Genetic analysis revealed that the distribution around the Falklands has been shaped by contemporary and historical events. Multiple genetic breaks have been observed and are concordant with biogeographic and oceanographic breaks. The present genetic structure can be best explained by transportation through ocean currents and habitat continuity for stepping-stone migration rather than by geographical distance. Kelps are under increasing anthropogenic pressure and environmental changes and unlike most other marine species they can be easily monitored. Thus, further studies need to be carried out to highlight more biogeographic and phylogeographic breaks at a global scale to understand the ecological and evolutionary processes that shape the distribution of kelps. In consequence, it will provide more information for management and conservation policies to be taken.Foi determinada a estrutura genética de Macrocystis pyrifera em torno das Ilhas Malvinas e da região de Magalhães. M. pyrifera, comummente chamada de alga gigante, forma extensas florestas submarinas e como a alga mais amplamente distribuída na terra. Os indivíduos podem crescer até 40 a 50 m de comprimento e é descrito como o organismo bentónico mais alto. De facto, a M.pyrifera é agora definida como uma espécie de fundação, na medida em que desempenha um forte papel na estruturação da comunidade, criando uma estrutura espacial complexa em 3D, influenciando as condições físicas e químicas, e a complexidade dos processos dos ecossistemas. M. pyrifera é também considerada como um engenheiro de ecossistemas na medida em que fornece alimento, habitat e substrato de desova a numerosas espécies, tais como mamíferos, peixes, caranguejos, ouriços do mar, moluscos, epífitos e comunidades bacterianas. Através deste complexo ecossistema estruturado, as florestas de algas não só ampliam a produção secundária e primária, como também apoiam uma diversificada teia alimentar costeira. Macrocystis pyrifera está distribuída ao longo de uma gama latitudinal e longitudinal muito ampla, do Alasca ao México no hemisfério norte, e ao longo da costa sudeste da América do Sul, do Peru à Argentina, mas também, em locais dispersos como a África do Sul, Tasmânia, e várias regiões sub-Antárcticas. Esta ampla gama distributiva mostra a eficiência da aclimatação de Macrocystis para lidar com tal painel de factores ambientais como, temperatura, salinidade, profundidade, luz, nutrientes, e exposição a ondas. Os atributos biológicos, morfologia interna e externa, e traços de história de vida são particularmente relevantes para a ecologia das algas, a fim de compreender como os Macrocystis interagem e lidam com o seu ambiente. A está entre as algas marinhas castanhas mais desenvolvidas, mostrando uma morfologia interna e externa muito complexa na qual cada parte da planta tem de ser capaz de funcionar e lidar com o ambiente que pode ser extremamente variável ao longo do tempo e da profundidade. Os factores bióticos limitam a capacidade de dispersão desta espécie. As literaturas sugerem que a capacidade de dispersão a longa distância é restrita e raramente eficiente. Contudo, estudos recentes têm demonstrado o valioso papel das balsas de algas e dos adultos flutuantes em termos de dispersão a longa distância. Além disso, as jangadas flutuantes demonstraram não só uma elevada capacidade de sobrevivência, aproximadamente 100 dias para alguns indivíduos, mas também o potencial de percorrer centenas de quilómetros enquanto continuam a ser férteis. A alga gigante habita manchas rochosas e tem uma capacidade de dispersão limitada, mas um elevado potencial de dispersão. Parece que a dispersão de longas distâncias por jangadas de algas permite uma fixação eficiente em novo habitat. Assim, pensa-se que a conectividade entre as populações é principalmente impulsionada pelas correntes oceânicas. As Ilhas Malvinas, também chamadas Islas Malvinas, estão localizadas no hemisfério sul, na faixa de vento ocidental na zona temperada a frio sul e situam-se a norte da frente polar, 450 km a nordeste da Terra do Fogo entre a latitude (51-53°S) e longitude (57-61°W) no Atlântico Sul. As Malvinas fornecem um habitat de reprodução essencial para muitas aves marinhas, mamíferos marinhos e espécies de aves costeiras, podendo assim ser caracterizadas como um importante ponto de atracção da biodiversidade. Alguns estudos identificaram 57 espécies de aves marinhas, incluindo 17 espécies de pinguins e 17 espécies de mamíferos marinhos, contudo, para a maioria das espécies foi observada uma variação interanual. A plataforma patagónica de águas pouco profundas produz com as duas correntes uma região de afloramento, o que significa uma água muito rica em nutrientes na origem de um copioso local de alimentação. Foram avaliadas descontinuidades genéticas relacionadas com quebras biogeográficas e o papel de preditores como a continuidade do habitat, dispersão, correntes oceanográficas e batimetria, para compreender a estrutura da metapopulação em redor das Malvinas. No total, 9 microsatélites e um marcador mitocondrial foram utilizados para genotipular 433 indivíduos de 22 populações diferentes. As populações de Macrocystis pyrifera foram amostradas de 2018 a 2019 a partir de cinco sítios na região de Magallean, localizados na Patagónia chilena, de um sítio na África do Sul e de 16 sítios em redor das Ilhas Malvinas (latitude -51,563412 e longitude -59,820557). Foram realizadas análises de ADN nuclear e de ADN mitocondrial para compreender os efeitos dos efeitos históricos e contemporâneos na distribuição das espécies e nas mudanças de distribuição. Em grande escala, a análise mostra que Macrocystis pyrifera está subdividida em quatro grupos genéticos principais, um na região de Magalhães, dois nas Ilhas Malvinas, e um na África do Sul. Além disso, as populações na região de Magallean demonstraram uma baixa diversidade genética que pode ser ligada aos recentes eventos de colonização, enquanto que em redor das Malvinas foi encontrada uma maior diversidade genética que pode reflectir eventos históricos. O papel desempenhado pelas Ilhas Malvinas como refúgio para esta espécie é bem suportado pela estrutura filogeográfica. A análise genética revelou que a distribuição em torno das Malvinas foi moldada por acontecimentos contemporâneos e históricos. Múltiplas quebras genéticas foram observadas e são concordantes com quebras biogeográficas e oceanográficas. A estrutura genética actual pode ser melhor explicada pelo transporte através das correntes oceânicas e pela continuidade do habitat para a migração das estepes, e não pela distância geográfica. As algas estão sob pressão antropogénica crescente e alterações ambientais e, ao contrário da maioria das outras espécies marinhas, podem ser facilmente monitorizadas. A alga gigante é um bom modelo para explorar os efeitos da distribuição espacial no padrão de conectividade devido à sua vasta gama de tamanhos de manchas, distribuição e distâncias que as separam. Os padrões espaciais de diversidade genética são essenciais para determinar os mecanismos evolutivos que conduzem a esta diferenciação genética, tanto quanto para compreender as consequências ecológicas da perda da diversidade genética. A Macrocystis é uma das algas marinhas mais importantes ecológica e economicamente do hemisfério sul. As políticas de gestão e conservação devem ser aplicadas para conservar as florestas de M. pyrifera e espécies ameaçadas, na medida em que aumentará a biodiversidade. Assim, é necessário realizar mais estudos para destacar mais quebras biogeográficas e filogeográficas à escala global, a fim de compreender os processos ecológicos e evolutivos que moldam a distribuição das algas. Em consequência, fornecerá mais informação para as políticas de gestão e conservação a serem tomadas.
Libros sobre el tema "Island giants"
1
Kreye, Walter. The giant from the little island. New York: North South Books, 1990.
Buscar texto completo
2
1944-, Orliac Michel, ed. Easter Island: Mystery of the stone giants. New York: H.N. Abrams, 1995.
Buscar texto completo
4
Among stone giants: The life of Katherine Routledge and her remarkable expedition to Easter Island. New York: Scribner, 2003.
Buscar texto completo
5
Tilburg, JoAnne Van. Among stone giants: The life of Katherine Routledge and her remarkable expedition to Easter Island. New York: Scribner, 2003.
Buscar texto completo
6
Tilburg, JoAnne Van. Among stone giants: The life of Katherine Routledge and her remarkable expedition to Easter Island. New York: Scribner, 2003.
Buscar texto completo
10
Jamieson, Richard. Cyrus S. Ching: The peacemaker, an Island giant. Charlottetown: University of Prince Edward Island, 1994.
Buscar texto completoCapítulos de libros sobre el tema "Island giants"
1
Laznicka, Peter. "Oceans and young island arc systems". En Giant Metallic Deposits, 81–108. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12405-1_5.
Texto completo
2
Urgeles, R., D. G. Masson, M. Canals, A. B. Watts, M. J. R. Gee, T. P. Le Bas y N. C. Mitchell. "Giant Landslides off the Island of La Palma". En European Margin Sediment Dynamics, 297–300. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55846-7_50.
Texto completo
3
Matsumoto, H., K. Suzuki, T. Miyazaki, S. Itoh y K. Hiraiwa. "Whose Heritage in the Giant Stone Culture in Easter Island?" En Advances in Forensic Haemogenetics, 200–202. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75496-8_60.
Texto completo
4
Dietrich, Volker Jörg. "Epilogue Nisyros Island, the Inaccessible Outpost Between Orient and Occident, Home of a Restless Giant". En Active Volcanoes of the World, 321–36. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-55460-0_12.
Texto completo
5
Dille, Glen F. "Of the Strait of Magallanes, its length and width, its notable parts, the giants that inhabit it and other particulars". En Spanish and Portuguese Conflict in the Spice Islands the Loaysa Expedition to the Moluccas 1525–1535, 69–73. Abingdon, Oxon ; New York, NY : Routledge, [2021] | Series: Hakluyt Society, third series ; No. 30: Routledge, 2021. http://dx.doi.org/10.4324/9781003144472-14.
Texto completo
6
Dille, Glen F. "Of some particulars of the people called the giants, and of the birds, fish and other things that those of this armada observed". En Spanish and Portuguese Conflict in the Spice Islands the Loaysa Expedition to the Moluccas 1525–1535, 51–52. Abingdon, Oxon ; New York, NY : Routledge, [2021] | Series: Hakluyt Society, third series ; No. 30: Routledge, 2021. http://dx.doi.org/10.4324/9781003144472-8.
Texto completo
7
Dille, Glen F. "What happened to the cleric Don Joan de Areyzaga among the giant Patagones, and of the continuation of their journey in search of the ships of the armada". En Spanish and Portuguese Conflict in the Spice Islands the Loaysa Expedition to the Moluccas 1525–1535, 47–50. Abingdon, Oxon ; New York, NY : Routledge, [2021] | Series: Hakluyt Society, third series ; No. 30: Routledge, 2021. http://dx.doi.org/10.4324/9781003144472-7.
Texto completo
8
Dille, Glen F. "How Captain General Fray García Jofre de Loaysa rejoined the other ships of the armada, and of other events that happened to them, and of the giants and people of the Strait of Magallanes to whom Magallanes gave the name Patagones". En Spanish and Portuguese Conflict in the Spice Islands the Loaysa Expedition to the Moluccas 1525–1535, 44–46. Abingdon, Oxon ; New York, NY : Routledge, [2021] | Series: Hakluyt Society, third series ; No. 30: Routledge, 2021. http://dx.doi.org/10.4324/9781003144472-6.
Texto completo
9
MacGregor, J. "Ateibeh Morass—Drowned in the Lake—Menagerie—Embarking— Dangerous Day—A Lonely Wold—End of Abana—Retreating— Christmas on Abana—Thoughts—Northern Lake—Mouths of Abana —Tell Dekweh—Tell Hijaneh—Hijaneh Lake—Paddling to Bashan— The Giant Cities—Nimrim—The Island—In a Boar-track—Channel." En A Canoe Cruise in Palestine, Egypt and the Waters of Damascus, 123–42. 1.MacGregor, J. - Journeys - Middle East 2.Rob Roy (Canoe) 3.Canoes and canoeing- Middle East - History- 19th century 4.Jordan River - Description and travel 5.Middle East - Description and travel: Routledge, 2019. http://dx.doi.org/10.4324/9781315828664-10.
Texto completo
10
Durham, William H. "Galápagos Derailed". En Exuberant Life, 83–115. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197531518.003.0004.
Texto completoResumen
The same species of Galápagos rail, a 6-inch insectivorous ground bird, has been reported on all eight islands with a highland humid zone. Evidence suggests that the rail colonized Galápagos at roughly the same time as giant tortoises, which evolved into 15 species with life spans of 150 years. So why is there just one species of rail? The question is especially germane given reports of the rail’s “reduced flight ability” (as is true of many island-dwelling rails), which would effectively isolate different island populations. And why has the species survived when so many similar rails have succumbed to human influence on other Pacific islands? The human history of Galápagos helps to answer these questions. Two things have saved the Galápagos rail from extinction: (1) It remains capable of flying between islands, which explains why it failed to differentiate like tortoises. (2) There have been massive efforts to eradicate or control invasive species, restoring habitat for rails to repopulate.
Actas de conferencias sobre el tema "Island giants"
1
King, Kevin Michael, Jarrod Craig Dunne, Liz Ross, Chris Haneveld, Jos van der Veeken, Nico Kremers y Matthijs van der Molen. "Time and Depth Migrations Over Giant Lunskoye Gas Field, Offshore Sakhalin Island, Russia". En SPE Russian Oil and Gas Technical Conference and Exhibition. Society of Petroleum Engineers, 2006. http://dx.doi.org/10.2118/102654-ms.
Texto completo
2
King, K., P. Jackson, C. Haneveld, J. V. D. Veeken, N. Kremers, J. Dunne, M. V. D. Molen et al. "Time and Depth Migrations Over Giant Lunskoye Gas Field, Offshore Sakhalin Island, Russia (Russian)". En SPE Russian Oil and Gas Technical Conference and Exhibition. Society of Petroleum Engineers, 2006. http://dx.doi.org/10.2118/102654-ru.
Texto completo
3
Bishop, Kim M. "EVIDENCE FOR A GIANT LANDSLIDE ON THE NORTHEASTERN FLANK OF HALEAKALA VOLCANO, ISLAND OF MAUI, HAWAII". En 113th Annual GSA Cordilleran Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017cd-292201.
Texto completo
4
Modavi, Cyrus Abdulla, Abdul Hakeem Al Muflehi, Ihaab Taemoom, Bakheet S. Al-Khateeri y Adil M. A. Noman. "A Super-Giant Offshore Field Development Plan Change from Steel Structures to Artificial Islands". En Offshore Technology Conference. Offshore Technology Conference, 2011. http://dx.doi.org/10.4043/22015-ms.
Texto completo
5
Matsusue, T., T. Saiki, M. Kuwata-Gonokami, H. Akiyama y H. Sakai. "Phase Relaxation Processes of Excitons in Island- Inserted Quantum Well Structures—Suppression of Relaxation and Giant Quantum Beats". En Ultrafast Electronics and Optoelectronics. Washington, D.C.: OSA, 1993. http://dx.doi.org/10.1364/ueo.1993.d4.
Texto completo
6
Modavi, Cyrus, Wallace William Martin, Abdul Hakeem Al Muflehi, John Victor Walters y Gamal Ismail. "Field Development Expansion of a Giant Oil Field in Abu Dhabi Using Artificial Islands as Drilling and Production Centers". En Abu Dhabi International Petroleum Exhibition and Conference. Society of Petroleum Engineers, 2008. http://dx.doi.org/10.2118/118379-ms.
Texto completo
7
Jorden, John D., Stuart Ronald Keller y Hamad Saleh Al Junaibi. "Record-Setting Horizontal Pilot Wells Drilled and Completed to Establish Feasibility of Developing Giant Offshore Field from Artificial Islands". En Abu Dhabi International Petroleum Exhibition and Conference. Society of Petroleum Engineers, 2010. http://dx.doi.org/10.2118/137554-ms.
Texto completo
8
Hadzantonis, Michael. "Becoming Spiritual: Documenting Osing Rituals and Ritualistic Languages in Banyuwangi, Indonesia". En GLOCAL Conference on Asian Linguistic Anthropology 2019. The GLOCAL Unit, SOAS University of London, 2019. http://dx.doi.org/10.47298/cala2019.17-6.
Texto completoResumen
Banyuwangi is a highly unique and dyamic locality. Situated in between several ‘giants’ traditionally known as centres of culture and tourism, that is, Bali to the east, larger Java to the west, Borneo to the north, and Alas Purwo forest to the south, Banyuwangi is a hub for culture and metaphysical attention, but has, over the past few decades, become a focus of poltical disourse, in Indonesia. Its cultural and spiritual practices are renowned throughout both Indonesia and Southeast Asia, yet Banyuwangi seems quite content to conceal many of its cosmological practices, its spirituality and connected cultural and language dynamics. Here, a binary constructed by the national government between institutionalized religions (Hinduism, Islam and at times Chritianity) and the liminalized Animism, Kejawen, Ruwatan and the occult, supposedly leading to ‘witch hunts,’ have increased the cultural significance of Banyuwangi. Yet, the construction of this binary has intensifed the Osing community’s affiliation to religious spiritualistic heritage, ultimately encouraging the Osing community to stylize its religious and cultural symbolisms as an extensive set of sequenced annual rituals. The Osing community has spawned a culture of spirituality and religion, which in Geertz’s terms, is highly syncretic, thus reflexively complexifying the symbolisms of the community, and which continue to propagate their religion and heritage, be in internally. These practices materialize through a complex sequence of (approximately) twelve annual festivals, comprising performance and language in the form of dance, food, mantra, prayer, and song. The study employs a theory of frames (see work by Bateson, Goffman) to locate language and visual symbolisms, and to determine how these symbolisms function in context. This study and presentation draw on a several yaer ethnography of Banyuwangi, to provide an insight into the cultural and lingusitic symbolisms of the Osing people in Banyuwangi. The study first documets these sequenced rituals, to develop a map of the symbolic underpinnings of these annually sequenced highly performative rituals. Employing a symbolic interpretive framework, and including discourse analysis of both language and performance, the study utlimately presents that the Osing community continuously, that is, annually, reinvigorates its comples clustering of religious andn cultural symbols, which are layered and are in flux with overlapping narratives, such as heritage, the national poltical and the transnational.