The Ebenaceae is a family of woody, mostly tropical plants consisting of about 500 species, some of which produce the ebony of commerce, and a few others produce the edible fruits known as persimmons. About 300 species occur in the Indo-Pacific area, with the greatest concentration, of 150 - 200 species, within the tropical rain forest region known as Malesia, which includes the political units Malaysia, Indonesia and the Philippines. This study is based primarily on herbarium material of Malesian species but whenever it has been necessary to ignore the Malesian boundary in the interests of acquiring a better understanding of the plants, I have done so. Hence all species in the Inde-Pacific area have been examined, at least casually, but some ia considerable detail. A few critical examples from Africa have also been included. The last comprehensive monograph on the family was written almost a century ago, by Hiern (1873), when only 262 species were recognised. Hiern's monograph is now completely out of date at species, sectional and generic levels. For Malesia, the standard regional monograph was completed by Bakhuisen in 1941. This work too, is out of date because much more new material has been collected, especially from areas formerly difficult to reach and consequently under-explored. The present study is divided into four parts. The first part consists of a series of investigations into form and structure within the family, covering carpel and seed morphology, seedling behaviour, pollen morphology, wood anatomy, various features of the epidermis especially trichomes and stomata, and karyotype. It was found that tho Ebenaceous gynoecium is composed of 2-8 bi-ovulate carpels "fused" to form a multilocular ovary. However, false septa are developed in all except 11 species. These false septa have usually not been recognised for what they are, and for this reason, descriptions of carpol morphology and the use of carpel characters in previous taxonomic treatments of the family have betrayed a considerable amount of confusion which the present research has cleared up. Pollen morphology and woody anatomy is remarkably constant throughout the family. Chromosome number is very stable. A single euploid series 2n m 30, 60, 90 applies right through the family. Epidermal structures are, on the other hand, more variable than might have been expected, e.g. there are simple, branched, tufted, glandular and peltate trichomes; stomata may bo anomocytic or have subsidary cells of various forms. Seedling behaviour during germination is variable, some species being neither hypogeal nor epigeal and have to be described by considering the behaviour of the hypecotyl and tho cotylodens separately. The second part is an investigation into the limits of the family. This consists of a series of critical comparisons between Kbenaseae and the families Sapetaceae, Sarcospermataceae, Styracaceae, Symplocaseae and Liasoearpaceae. A large number of characters were examined, in the process of which several important points emerged. Carpel structure has been consistantly misinterpreted especially in the system of Engler (1964). Contrary to the claim that the Sapotaceous ovary is completely partitioned into lecules, by which it differs from the partially "open" condition in Kbenaseae, Styracaceae and Symplocaseae it was found that the lecules in every Sapetaceous ovary examined, are in connection with each other by means of a compitum of varying size. In fact, all the six families involved in this survey are eu-syncarpous (Carr & Carr 1961). Trichome characters are unreliable as markers for the various families. Popular association of branched hairs with Sapetaceae and simple hairs with Ebenaceae and Symplocaceae turn out to be oversimplifications of the truth. In previously published definitions of these six families, the boundaries between them appear to be funny. It was found that much fussiness merely reflects bad choice of characters and misunderstanding of certain structures and of their extent of variation. The families are in fact either very sharply defined from each other or not clearly definable at all. Sarcospermataceae ia a bad family, quite indistinct from Sapetaceae. All the other families are sharply defined from each other by several to many characters, and there are no problems of intermediate taxa. Lissocarpaceae, sometimes thought to be intermediate between Ebenaceae and Styracaceae, is a distinct family but probably tho meet closely related to Ebenaceae of all the families considered. Sapetaceae usually thought of as the closest family to Ebenaceae is in fact most different. The naturalness of the Order Ebenales is put in doubt. In the third part, Bakhuisen's classification of Malesian Ebenaceae (actually Dioapyres since this is the only genus in Malesia), ie put to the test using a taximetrlc procedure of character analysis. The results support the maintainance of Hierniodendron and Brachycylix as infra-generic taxa worthy of recognition. Support for the other sub-genera and sections was feeble to nil. The genus Dioapyres is probably best considered to consist of one very large variable section (Sect. Dioapyres) and a small number of little ones. Problems of species delimitation do not loom very large in this study, but in the fourth part, three species-complexes were analysed for morphological variation over their entire range. In one of these analyses, involving Dioapyres sylvatica, D. ehreticides, D.hermaphredies and D.fasciculesa, an interesting pattern of allopatry emerged, which suggested that some of these taxa could be regarded as geographical subspecies. The other two analyses were carried out on D.kaki, D.lotus and their relatives. These species produce edible persimmons. Problems of their origin and spread are consequently of wider than taxonoaic interest, but the taxonomic approach adopted here serves to sharply outline various hypothoses that ethers may be able to test by cytotaxonomic and other means. It is suggested that D.kaki originated from D.roxburghii, which is now found wild in the forests of Assan, Burma, Thailand, Yunnan and Indo China. The controversial problem of the role of man in the distribution of D.lotus is reviewed and summarised.

[Abstract]: Australia is one of the driest continents in the world, and over the past decades, severe drought has plagued most of the country. Water security is an important national issue. The ultimate water supply, rainfall, however, is one of the most variable ones in theworld and is complicated by the fact that it is affected by several remote oceanatmospheric teleconnection systems simultaneously, including the El Niño-SouthernOscillation, the Indian Ocean Dipole and Southern Hemisphere oceanic and atmospheric variability. These three systems sometimes conspire to produce a severe impact, whereas sometimes they offset each other to produce a mild influence. The recent severe watershortage has generated a surge of investments with strong regional applications. The present study focuses on areas and issues outside the scope of these regional studies,aiming to provide an Australia-wide assessment of future Australian rainfall under climate change. Firstly, we unravel a process of the Indo-Pacific oceanic teleconnection and examine its role in influencing variability of the Indian Ocean, and hence Australianrainfall variations. An examination of their contribution to the warming structure of the Indian Ocean is carried out. Secondly, we explore dynamics of North West Australianrainfall variability and mechanisms of a rainfall increase over the past decades, and benchmark climate models in terms of their ability to reproduce the observed variability and trends, focusing on the role of increasing northern hemispheric aerosols in the rainfallincrease. Thirdly, we provide a dynamical explanation to the common future of a fast Tasman Sea warming rate under climate change, and identify the impacts of suchwarming on Australian rainfall. Finally, we examine the relative importance of the three systems, in addition to Tasman Sea warming, in driving rainfall changes undergreenhouse conditions. This project contributes to no less than six peer-reviewed journal publications.

Broad-scale population genetics can reveal population structure across an organism’s entire range, which can enable us to determine the most efficient population-wide management strategy depending on levels of connectivity. Genetic variation and differences in genetic diversity on small-scales have been reported in anemones, but nothing is known about their broad-scale population structure, including that of “host” anemone species, which are increasingly being targeted in the aquarium trade. In this study, microsatellite markers were used as a tool to determine the population structure of a sessile, host anemone species, Heteractis magnifica, across the Indo-Pacific region. In addition, two rDNA markers were used to identify Symbiodinium from the samples, and phylogenetic analyses were used to measure diversity and geographic distribution of Symbiodinium across the region. Significant population structure was identified in H. magnifica across the Indo-Pacific, with at least three genetic breaks, possibly the result of factors such as geographic distance, geographic isolation and environmental variation. Symbiodinium associations were also affected by environmental variation and supported the geographic isolation of some regions. These results suggests that management of H. magnifica must be implemented on a local scale, due to the lack of connectivity between clusters. This study also provides further evidence for the combined effects of geographic distance and environmental distance in explaining genetic variance.

Les rivières des systèmes insulaires de la région Indo-Pacifique abritent de nombreuses espèces d’organismes migrateurs qui sont les seules espèces capables de coloniser naturellement les cours d’eau. Les stratégies de dispersion de ces organismes diadromes représentent un moteur essentiel de la structuration et de la persistance des communautés allant de l’échelle locale du cours d’eau, d’une île ou d’un archipel, à l’échelle régionale. En raison de l’isolement, les populations locales n’assurent leur pérennité qu’en maintenant une dispersion marine forte, permettant la colonisation de milieux nouveaux et un recrutement indépendant des conditions locales de reproduction. Chez les mollusques Gastéropodes, la famille des Neritidae est constituée d’espèces diadromes amphidromes à répartition restreinte et d’espèces à plus large répartition. Nous avons essayé, par l'étude des traits de vie de ces espèces, de contribuer, notamment, à la compréhension des facteurs qui régulent la dispersion et le recrutement, afin d'aider à la gestion durable de ces taxons et de leurs habitats, et ce dans un contexte de changement global et d'anthropisation croissante. Après avoir effectué la synthèse des connaissances actuelles sur les nérites amphidromes, nous avons réalisé une révision taxinomique du complexe 'Neritina pulligera' et étudié la phylogéographie de deux espèces, N. stumpffi et N. canalis, à l'aide du barcoding moléculaire et d'études morphologiques. Nous avons ainsi mis en évidence la présence d'espèces cryptiques au sein du complexe étudié, et le rôle de deux barrières biogéographiques régulant la circulation des larves, la première entre le Pacifique ouest et le Pacifique central, la seconde entre l'océan Pacifique et l'océan Indien. Enfin, notre travail a également ouvert, à travers le marquage vital et la microchimie, des perspectives intéressantes dans l'étude de l'opercule qui pourrait être utilisé comme outil multiusage et archive environnementale permettant de décrypter les traits de vie des nérites. / Rivers in Indo-Pacific islands are colonised by diadromous species, and as migrating species, they are the only ones capable of naturally colonising insular freshwaters. Dispersal strategies of these diadromous species are essential for the colonisation and the persistence of freshwater communities at a local scale, but also at the island and regional scales. Because of their isolation, local populations can only be perennially maintained by an important marine dispersal, allowing the colonisation of new environments with a recruitment independent from the local reproduction conditions. Within the gastropod molluscs, the Neritidae family is composed of diadromous amphidromous species; there are widespread species and others have a more restricted distribution area. By analysing life history traits of these species, we contributed to the understanding of the factors regulating dispersal and recruitment. In the context of global change and rising human impacts on the environment, our results will bring knowledge for the sustainable management of these taxa. After having synthesised the present knowledge on amphidromous neritids, we undertook the taxonomic revision of the ‘Neritina pulligera’ complex. We also studied the phylogeography of two species, N. stumpfii and N. canalis by a molecular barcoding approach. Our results show the presence of cryptic species within the complex studied. We also show that there are two biogeographic barriers, one between the West Pacific and the Central Pacific, and the other between the Indian and the Pacific oceans, playing an important role in the regulation of oceanic larval circulation. Finally, our work on the vital marking and the microchemical analysis of the operculum, has given rise to new interesting research perspective. Indeed, the operculum could be used as an environmental archive allowing deciphering some life history traits of this group.

This dissertation is a study of early Islamicate commerce in natural luxuries of the tropical Indian Ocean and Western Pacific Rim, such as spices, ambergris and pearls, between the ninth and eleventh centuries C.E. I approach this topic by looking at a wide array of textual sources, from geographies, anecdotes, travel narratives, inscriptions, and the records of embassies, to materia medica and the oldest surviving Islamicate cookbook. I analyze these sources alongside material culture, archeological evidence from ports in Iran, Oman, and Southeast Asia, and newly-discovered shipwrecks from the Java Sea. Adapting the work of environmental scientists to the thesis, I locate this early Islamicate commerce within a bio-geographical space, the tropical "Indo-Pacific." I argue that desires for the tropical luxuries of the environmentally-distinct Indo-Pacific helped to define the cosmopolitan culture of early Islamicate societies, from Iran and Iraq to Egypt and Spain. These desires promoted an expanding Islamicate maritime commerce across the Indo-Pacific, which led to the flourishing of port-cities in southern Iran and Oman. This maritime trade expanded Islamicate geographical horizons, as reflected in the evolving "wonders" and geographical literature of the era. It also led to early contacts between the Islamic world and the peoples of the tropical Pacific Rim, a phenomenon that contributed, in time, to the formation of Islamicate societies in maritime Southeast Asia. / Near Eastern Languages and Civilizations

The world has never been more connected than it is today. While this is true for people, it is also true for Earth's flora and fauna. Unfortunately, this connectedness has contributed to unprecedented invasive species introductions around the world. Most introductions result in an introduced species dying out in the newly invaded territory and never becoming established. Other introduced species establish and persist for years, but never have a noticeable effect on local ecosystems. However, occasionally, an invasive species gets introduced to a new area and has negative impacts on native plant and animal life. The Indo-Pacific swimming crab, Charybdis hellerii, was introduced to the southern Indian River Lagoon (IRL) in the 1990s. Recently, it has been reported to be expanding its non-native range northward up the IRL and into more northerly east coast states. To better understand the ecological role C. hellerii fills in the lagoon and the threat it poses to the economically important and native Callinectes sapidus, this study utilized stable isotope analysis to assess dietary overlap and competition between these species. The results of this study indicate significant overlap in dietary resource usage suggesting C. hellerii is likely feeding on some of the same prey items and competing with native C. sapidus. Based on the increasing numbers of C. hellerii and their reported range expansion, they appear to be establishing populations in the U.S. and will continue to compete with C. sapidus. This could negatively impact C. sapidus populations in the IRL, which is bad for the crab, bad for the fishery, and bad for the lagoon. Further, competition in the IRL is concerning for the rest of the southeastern U.S. states that appear to be in the early stages of a C. hellerii invasion. The findings of this study illuminate the need for further research into the ecological niche C. hellerii is filling in the IRL and the interactions it is having with, as well as the effects it is having on, native species in the lagoon. This study and future research will allow fisheries managers to devise more effective strategies to limit the spread of C. hellerii and minimize the harm it can do in non-native environments.

The recent development of the Indo-Pacific region is characterised by the changing balance of power and the emergences of new forms of security cooperation. The Quadrilateral Security Dialogue (QSD) between Japan, the United States (U.S.), Australia and India came back into existence in 2017 after their failed attempt in 2007-2008. This thesis attempts to investigate what factors explain the re-emergence of the QSD by synthesising several alignment/alliance theories in International Relations (IR). Given the previous research on the QSD and theoretical discussions, this thesis points out the two key factors that contributed to the re-emergence of the QSD: the shared threat perception towards China and the shared objectives in the Indo-Pacific region. The content analysis of a number of official policy documents and press statements revealed that Japan, the U.S., Australia and India have increasingly perceived China as a threat and coordinated their policy objectives in the Indo-Pacific region under the concept of the Free and Open-Indo Pacific.

With the Indo Pacific being one of the most economically and geopolitically significant regions in the world currently, the competition for influence between the two major powers of the region has picked up, alongside the discourse which takes place from each side through multilateral means. Literature has shown the vast amounts of previous research done on the topic, approaching the region with a realist or liberalist perspective, therefore leaving room for this research to partake in a relational constructivist research on the narratives and discourses driven by both sides multilaterally to counter each other as a means of competition. With the application of the concepts of identity, legitimation & rhetorical commonplaces, and social attribution, this research will partake in a discourse predicate analysis of official speeches and government documents within multilateral context from both the US and China regarding each other. The research examines the ways in which the US has constructed the region under a guise of securitisation and China as an opposition to the American-led world order. China approaches the region differently, constructing it as one that cooperates and integrates itself with China. Thus, through ongoing interactions, the discourse shapes the ways in which the powers view each other.

Structural Violence and Great Power Competition: The Effects of Sino-U.S. Geopolitical Rivalry in the Indo-Pacific Abstract This paper examines the effects of the ongoing strategic rivalry between China and the United States for influence over the Indo-Pacific in order to demonstrate the negative impacts upon structural violence within the region. Using an amalgamation from various authors, this paper establishes a definition and set of criteria for the presence of structural violence which are then applied to the cases of Vietnam, Myanmar, and Japan. By correlating the mechanisms with which China and the United States garner influence with the specific consequences for the prevalence and severity of structural violence, this paper illustrates that the ongoing geopolitical rivalry poses considerable threats to all Indo-Pacific nations regardless of their development status or social, political, economic, and geographic characteristics. Results indicate that the extent of each country's structural violence was directly or indirectly affected by the presence of foreign involvement, and that different levels of alignment or independence can serve to reduce or exacerbate these effects. Furthermore, evidence indicated that China's methods pose a more immediate threat to induvial countries, but that the United...

Rezente Korallenriffe sind einer ganzen Reihe von Bedrohungen ausgesetzt. Das Pleistozän bietet die Gelegenheit Veränderungen an Korallenriffgemeinschaften durch Klimaschwankungen hinweg zu studieren und mit heutigen Riffen zu vergleichen. Am besten sind pleistozäne Riffe in der Karibik untersucht, während aus dem Indo-Pazifik, der über eine deutlich höhere Biodiversität verfügt, bisher nur wenige quantitative Studien vorliegen. Frühere Studien zeigen eine erstaunliche Stabilität und Langlebigkeit der Korallengemeinschaften hinsichtlich Diversität und taxonomischer Zusammensetzung trotz extremer Meeresspiegelschwankungen und starker klimatischer Veränderungen im Quartär. Die vorliegende Arbeit behandelt zwei Regionen, aus der quantitative Daten auf Artniveau über die Zusammensetzung der fossilen Korallengemeinschaften bisher weitestgehend fehlten: das tropische Vanuatu (Südpazifik) und der subtropische Sinai, Ägypten (nördliches Rotes Meer). In Vanuatu sind mindestens 5 fossile Riffterrassen mit einem Alter von etwa 5000 - 400.000 Jahren überliefert, von denen 4 detailliert untersucht werden konnten. Veränderungen in der Diversität wurden sowohl lateral als auch vertikal nur mit unterschiedlichen Riffhabitaten in Verbindung gebracht. Die Riffe waren insgesamt über die Interglaziale bin ins mittlere Holozän hinweg stabil. Nur die Gattung Acropora scheint erst in den letzten 96.000 Jahren häufiger zu werden. In Ägypten wurden Daten aus der jüngsten interglazialen Terrasse (MIS 5e, ~125.000 Jahre) mit rezenten Daten aus dem Roten Meer verglichen und eine Migration von Arten nach Norden während des letzten Interglazials belegt. Diese Beobachtung unterstützt frühere Arbeiten, die eine Verschiebung der Riffdiversität in höhere Breiten verbunden mit einer Abnahme der Diversität in niederen Breiten aufzeigten, sowie Studien, die das nördliche Rote Meer als mögliches Refugium für Korallen im Zuge der weiteren Klimaerwärmung sehen. / The Pleistocene provides the opportunity to study changes of coral reef communities through times of climate change, and to compare fossil to recent reefs. Whereas Pleistocene reefs from the Caribbean are well studied and understood, the much larger Indo-Pacific region with a greater coral diversity is represented by only a few quantitative studies on community ecology. Previous studies observed an astonishing persistence and stability in community composition and diversity throughout several interglacial episodes until today, which is contradictory to the claim that recent coral reefs are especially sensitive to climate change. The present study deals with two Indo-Pacific regions that so far lacked quantitative data of fossil reef communities: tropical Vanuatu (Coral Sea) and subtropical Sinai, Egypt (northern Red Sea). In Vanuatu at least seven fossil reef terraces with ages between 5,000 and 400,000 years are preserved, of which four could be studied in more detail. A great variability was observed among terraces and especially among sub-environments within terraces. Reefs remained stable in terms of diversity throughout the Pleistocene and Holocene but it seems that the dominance of the coral genus Acropora is a fairly recent phenomenon in Vanuatu, because this genus does not play a large role in terraces older than 96,000 years (MIS 5c). In Egypt quantitative and binary data from the last interglacial episode (MIS 5e) were compared with data from the recent Red Sea and adjacent regions. These show a northward migration of coral taxa during the last MIS5e. This observation confirms earlier studies that demonstrated a range expansion of tropical reef communities towards higher latitudes, and supports studies that suggest the northern Red Sea and especially the Gulf of Aqaba as future refuge for corals during climate warming. These results indicate that coral reefs were able to cope with dramatic environmental changes in the absence of anthropogenic impact.