Artículos de revistas sobre el tema "Abaco Island"

On low islands or island groups such as the Bahamas, surrounded by shallow oceans, Quaternary glacial–interglacial changes in climate and sea level had major effects on terrestrial plant and animal communities. We examine the paleoecology of two species of songbirds (Passeriformes) recorded as Late Pleistocene fossils on the Bahamian island of Abaco—the Eastern bluebird (Sialia sialis) and Hispaniolan crossbill (Loxia megaplaga). Each species lives today only outside of the Bahamian Archipelago, with S. sialis occurring in North and Central America and L. megaplaga endemic to Hispaniola. Unrecorded in the Holocene fossil record of Abaco, both of these species probably colonized Abaco during the last glacial interval but were eliminated when the island became much smaller, warmer, wetter, and more isolated during the last glacial–interglacial transition from ∼15 to 9 ka. Today’s warming temperatures and rising sea levels, although not as great in magnitude as those that took place from ∼15 to 9 ka, are occurring rapidly and may contribute to considerable biotic change on islands by acting in synergy with direct human impacts.

We report 95 vertebrate taxa (13 fishes, 11 reptiles, 63 birds, 8 mammals) from late Pleistocene bone deposits in Sawmill Sink, Abaco, The Bahamas. The >5,000 fossils were recovered by scuba divers on ledges at depths of 27–35 m below sea level. Of the 95 species, 39 (41%) no longer occur on Abaco (4 reptiles, 31 birds, 4 mammals). We estimate that 17 of the 39 losses (all of them birds) are linked to changes during the Pleistocene–Holocene Transition (PHT) (∼15–9 ka) in climate (becoming more warm and moist), habitat (expansion of broadleaf forest at the expense of pine woodland), sea level (rising from −80 m to nearly modern levels), and island area (receding from ∼17,000 km2 to 1,214 km2). The remaining 22 losses likely are related to the presence of humans on Abaco for the past 1,000 y. Thus, the late Holocene arrival of people probably depleted more populations than the dramatic physical and biological changes associated with the PHT.

ABSTRACTOn September 1, 2019, Hurricane Dorian made landfall as a category 5 hurricane on Great Abaco Island, Bahamas. Hurricane Dorian matched the “Labor Day” hurricane of 1935 as the strongest recorded Atlantic hurricane to make landfall with maximum sustained winds of 185 miles/h.1 At the request of the Government of the Bahamas, Team Rubicon activated a World Health Organization Type 1 Mobile Emergency Medical Team and responded to Great Abaco Island. The team provided medical care and reconnaissance of medical clinics on the island and surrounding cays…

We describe a late Pleistocene species of extinct rail, Rallus gracilipes n. sp., from Sawmill Sink blue hole on Abaco Island, Little Bahama Bank, The Bahamas. The only other extinct rail known from any Bahamian island is the smaller Rallus cyanocavi, also from late Pleistocene contexts at Sawmill Sink. No fossils of R. gracilipes or R. cyanocavi have been found in Holocene sites on Abaco; the loss of both of these species is likely to be due to changes in climate, habitat, and island area during the Pleistocene-Holocene Transition.

Bahadzia, new genus, and two new species of amphipod crustaceans are described from anchialine caves in the Bahamas and Turks and Caicos Islands. One of the species is recorded from three caves on Grand Bahama Island and one cave on Great Abaco Island, whereas the other species is recorded from two caves on the island of Providenciales. The new genus is apparently more closely related to Metaniphargus and Saliweckelia than other hadziid genera in the peri-Caribbean region, but it also shares some important characters with Mayaweckelia.

No native species of tortoises ( Chelonoidis spp.) live today in the Bahamian (Lucayan) Archipelago (= The Bahamas + The Turks and Caicos Islands), although a number of species inhabited these islands at the first human contact in the late-Holocene. Until their extinction, tortoises were the largest terrestrial herbivores in the island group. We report 16 accelerator mass spectrometer (AMS) radiocarbon (14C) dates determined directly on individual bones of indigenous, extinct tortoises from the six Bahamian islands (Abaco, Eleuthera, Flamingo Cay, Crooked, Middle Caicos, Grand Turk) on five different carbonate banks. These 16 specimens probably represent six or seven species of tortoises, although only one ( Chelonoidis alburyorum on Abaco) has been described thus far. Tortoises seem to have survived on most Bahamian islands for only one or two centuries after initial human settlement, which took place no earlier than AD ~700–1000. The exception is Grand Turk, where we have evidence from the Coralie archeological site that tortoises survived for approximately three centuries after human arrival, based on stratigraphically associated 14C dates from both tortoise bones and wood charcoal. The stable isotope values of carbon (σ13C) and nitrogen (σ15N) of dated tortoise fossils show a NW-to-SE trend in the archipelago that may reflect increasing aridity and more consumption of cactus.

Abstract A combined provenance-progeny test of Pinus caribaea var. bahamensis was established in Paraguaçu Paulista Experimental Station, São Paulo State, Brazil, in a “compact family” blocks design with 14 provenances, 2 to 10 families per provenance, 5 individuals per subplot, and 7 replications. Variation among and within island, provenances and families and genetic parameters for d.b.h., height, and real volume were investigated, about 15 years after planting. Analysis of variation for all studied traits revealed significant differences among islands, provenances within island and families within islands, suggesting the possibility of increasing the timber yield through selection of the more productive provenances and families within the best island. Genetic correlations on growth traits were high and statistically significant, indicating that substantial gains could be made through indirect selection for one trait based on direct selection for another. Norman Castle provenance from Abaco Island performed best for d.b.h. height and volume, while San Andros and Little Harbour Cay, both from Andros Island performed worst for d.b.h. and height, respectively, and South Riding from Grand Bahamas Island performed worst for volume. The best provenance growth compared to that P. elliottii var. elliottii species at the same experimental site suggests that P. caribaea var. bahamensis has high silvicultural potential for the Paraguaçu Paulista region.

AbstractA conservation assessment for the three cycad species native to the Bahamas Islands is presented. Results are based on field surveys on all islands where these species occur. Zamia angustifolia is native to Eleuthera, Zamia integrifolia is native to Abaco, Andros, Eleuthera, Grand Bahama and New Providence, and Zamia lucayana is endemic to Long Island. Z. angustifolia is of the highest conservation concern because of the small number of adult plants, its restricted distribution and the extensive development occurring within its habitat. Z. integrifolia also has a restricted distribution on Eleuthera and Grand Bahama and, although threatened by urban development in New Providence, it is relatively common on Abaco and Andros. Z. lucayana comprises three populations within a narrow strip of land of c. 1 km2; we propose a reassignment of its current conservation status from Endangered to Critically Endangered. We assessed the genetic structure of Z. lucayana based on 15 polymorphic microsatellite DNA loci; this indicated that the three known populations should be considered a single management unit. However, the high number of private alleles suggests that genetic drift, indicative of recent fragmentation, is progressing. We propose in situ conservation strategies, and we also collected germplasm from a total of 24 populations of these three cycad species, for ex situ conservation.

The first Caribbean settlers were Amerindians from South America. Great Abaco and Grand Bahama, the final islands colonized in the northernmost Bahamas, were inhabited by the Lucayans when Europeans arrived. The timing of Lucayan arrival in the northern Bahamas has been uncertain because direct archaeological evidence is limited. We document Lucayan arrival on Great Abaco Island through a detailed record of vegetation, fire, and landscape dynamics based on proxy data from Blackwood Sinkhole. From about 3,000 to 1,000 y ago, forests dominated by hardwoods and palms were resilient to the effects of hurricanes and cooling sea surface temperatures. The arrival of Lucayans by about 830 CE (2σ range: 720 to 920 CE) is demarcated by increased burning and followed by landscape disturbance and a time-transgressive shift from hardwoods and palms to the modern pine forest. Considering that Lucayan settlements in the southern Bahamian archipelago are dated to about 750 CE (2σ range: 600 to 900 CE), these results demonstrate that Lucayans spread rapidly through the archipelago in less than 100 y. Although precontact landscapes would have been influenced by storms and climatic trends, the most pronounced changes follow more directly from landscape burning and ecosystem shifts after Lucayan arrival. The pine forests of Abaco declined substantially between 1500 and 1670 CE, a period of increased regional hurricane activity, coupled with fires on an already human-impacted landscape. Any future intensification of hurricane activity in the tropical North Atlantic Ocean threatens the sustainability of modern pine forests in the northern Bahamas.

ABSTRACTIn September 2019, the northwest Bahamas suffered unparalleled damages due to Hurricane Dorian. The storm disrupted all the essential community services, including water, electricity, and medicine. Heart to Heart International provided medical support in a very austere environment to the people of Abaco island. This article examines the challenges faced by the response team from Heart to Heart International in the immediate aftermath of Hurricane Dorian.

Abstract Chlorostilbon bracei Lawrence, known from the unique holotype taken on New Providence Island, Bahamas, in 1877, is shown to be a valid species that is evidently now extinct. Compared with C. ricordii of Cuba and the Bahamas, C. bracei is smaller, has a longer bill, and has distinctly different plumage. Fossil evidence demonstrates that a small Chlorostilbon, tentatively referred to C. bracei, was present on New Providence in the Pleistocene. Populations of C. ricordii from Andros, Abaco, and Grand Bahama are indistinguishable from Cuban birds, and C. ricordii is therefore regarded as monotypic.

Since the description of the Bahamian cave-fish Lucifuga spelaeotes Cohen & Robins, 1970, which was based on two specimens from New Providence Island, the species has been observed and/ or collected several times in marine blue-holes and inland caves on various Bahamian Islands. Hitherto, all Lucifuga records from the Bahamas have been referred to L. spelaeotes, but examination of 50 specimens (42–166 mm SL) collected at 7 different islands showed that two species are represented in the Bahamas: 44 specimens from Berry, New Providence, Eleuthera, Great Exuma and Long Island belong to L. spelaeotes, whereas 6 specimens from Grand Bahama and Abaco Islands are referable to L. lucayana, new species. The new species is here described and compared to the material of L. spelaeotes, which includes specimens from several hitherto unpublished locations. The two species are well separated from the Cuban species in number of caudal finrays (10 vs. 8), size of eye (0.7–1.8 vs. 0.0–0.3 % SL) and number of vertebrae (50–55 vs. 45–48). The Bahamian species differ from each other mainly in head squamation, palatine dentition, number of finrays and pigmentation of the three elongated gill-rakers. Lucifuga lucayana is geographically separated from L. spelaeotes by the deep waters of the Northeast and Northwest Providence Channels.

The leaf oil of Calyptranthes pallens was obtained by hydrodistillation and analyzed by GC/MS. The most abundant oil components were the monoterpenoids α-pinene (24.7%), α-terpineol (13.8%), and trans-pinocarveol (11.6%). The antimicrobial activity against Bacillus cereus, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Candida albicans, and Aspergillus niger, and the in-vitro cytotoxicity of the oil on Hep G2, MDA-MB-231, Hs 578T, and PC-3 human tumor cells were also examined.

A new species of mud shrimp of the genus Naushonia Kingsley, 1897 is described from two anchialine caves on the island of Great Abaco in the Bahamas. Naushonia tinkeri n. sp. is the fifteenth species in the genus and the second to be described from the Bahamas. The new species is morphologically similar to N. augudrea (Juarrero & García, 1997) from Holguín Province, eastern Cuba, with which it shares a carapace with cervical and cardiac grooves; however, it can be distinguished by having a pigmented cornea, the first pereiopod with a proportionately longer propodus and dactylus without a toothed external margin, and the telson longer relative to the uropod length. The new species inhabits anchialine caves and is the largest one reported until now.

Ancient DNA of extinct species from the Pleistocene and Holocene has provided valuable evolutionary insights. However, these are largely restricted to mammals and high latitudes because DNA preservation in warm climates is typically poor. In the tropics and subtropics, non-avian reptiles constitute a significant part of the fauna and little is known about the genetics of the many extinct reptiles from tropical islands. We have reconstructed the near-complete mitochondrial genome of an extinct giant tortoise from the Bahamas ( Chelonoidis alburyorum ) using an approximately 1 000-year-old humerus from a water-filled sinkhole (blue hole) on Great Abaco Island. Phylogenetic and molecular clock analyses place this extinct species as closely related to Galápagos ( C. niger complex) and Chaco tortoises ( C. chilensis ), and provide evidence for repeated overseas dispersal in this tortoise group. The ancestors of extant Chelonoidis species arrived in South America from Africa only after the opening of the Atlantic Ocean and dispersed from there to the Caribbean and the Galápagos Islands. Our results also suggest that the anoxic, thermally buffered environment of blue holes may enhance DNA preservation, and thus are opening a window for better understanding evolution and population history of extinct tropical species, which would likely still exist without human impact.

SummaryIn the 1490S a minimum of 28 species of psittacines occurred in the West Indies. Today, only 43% (12) of the species survive. All macaws and most parakeet species have been lost. Although the surviving parrot fauna of the Greater Antilles, Cayman Islands, and Bahama Islands has fared somewhat better than that of the Lesser Antilles, every species has undergone extensive reductions of populations and all but two have undergone extensive reductions in range, mostly as a result of habitat loss, but also from persecution as agricultural pests, conflicts with exotic species, harvesting for pets, and natural disasters. The Cayman Brae Parrot Amazona leucocephala hesterna, with its tiny population (lessthan 150 individuals in the wild) and range, and the Puerto Rican Parrot A. vittata, with 22-23 birds in the wild and 56 individuals in captivity, must be considered on the of extinction and in need of (in the tatter's case, continuing) aggressive programmes of research and management. Other populations declining in numbers and range include the Yellow-billed Amazona collaria, and Black-billed A. agilis Parrots of Jamaica, Hispaniolan Parakeet Aratinga chloroptera, Hispaniolan Parrot Amazona ventralis, Cuban Parrot A. leucocephala leucocephala and, most seriously, Cuban Parakeet Aratinga euops. The population of the Grand Cayman Parrot (Amazona leucocephala caymanensis), although numbering only about 1,000 birds, appears stable and the current conservation programme gives hope for the survival of the race. An active conservation and public education programme has begun for the Bahama Parrot A. l. bahamensis, which still occurs in good numbers on Great Inagua Island, but is threatened on Abaco Island. Recommendations for conservation of parrots and parakeets in the region include (1) instituting term programmes of research to determine distribution, status, and ecology of each species; (2) developing conservation programmes through education and management approaches that are culturally, politically, and economically sensitive to the region; and providing and protecting habitat within suitably sized reserves.

Abstract. Here we make an initial step toward the development of an ocean assimilation system that can constrain the modelled Atlantic Meridional Overturning Circulation (AMOC) to support climate predictions. A detailed comparison is presented of 1° and 1/4° resolution global model simulations with and without sequential data assimilation, to the observations and transport estimates from the RAPID mooring array across 26.5° N in the Atlantic. Comparisons of modelled water properties with the observations from the merged RAPID boundary arrays demonstrate the ability of in situ data assimilation to accurately constrain the east-west density gradient between these mooring arrays. However, the presence of an unconstrained "western boundary wedge" between Abaco Island and the RAPID mooring site WB2 (16 km offshore) leads to the intensification of an erroneous southwards flow in this region when in situ data are assimilated. The result is an overly intense southward upper mid-ocean transport (0–1100 m) as compared to the estimates derived from the RAPID array. Correction of upper layer zonal density gradients is found to compensate mostly for a weak subtropical gyre circulation in the free model run (i.e. with no assimilation). Despite the important changes to the density structure and transports in the upper layer imposed by the assimilation, very little change is found in the amplitude and sub-seasonal variability of the AMOC. This shows that assimilation of upper layer density information projects mainly on the gyre circulation with little effect on the AMOC at 26° N due to the absence of corrections to density gradients below 2000 m (the maximum depth of Argo). The sensitivity to initial conditions was explored through two additional experiments using a climatological initial condition. These experiments showed that the weak bias in gyre intensity in the control simulation (without data assimilation) develops over a period of about 6 months, but does so independently from the overturning, with no change to the AMOC. However, differences in the properties and volume transport of North Atlantic Deep Water (NADW) persisted throughout the 3 year simulations resulting in a difference of 3 Sv in AMOC intensity. The persistence of these dense water anomalies and their influence on the AMOC is promising for the development of decadal forecasting capabilities. The results suggest that the deeper waters must be accurately reproduced in order to constrain the AMOC.

Abstract. The poleward ocean heat transports in the North Atlantic controlled by the Atlantic Meridional Overturning Circulation (AMOC), play a key role in regional climate. If the AMOC can be initialized in numerical models through ocean assimilation this may help improve the predictability of North Atlantic climate variability on timescales out to a few years. Here we make an initial step toward the development of an ocean assimilation system that can determine the AMOC to support climate predictions. A detailed comparison is presented of 1° and 1/4° resolution global model simulations with and without sequential data assimilation to the observations and transport estimates from the RAPID/MOCHA mooring array across 26.5° N in the Atlantic. Comparisons of modelled water properties with the observations from the merged RAPID boundary arrays demonstrate the ability of in situ data assimilation to accurately constrain the east-west density gradient between these mooring arrays. However, the presence of an unconstrained "western boundary wedge" between Abaco Island and the RAPID mooring site WB2 (16 km offshore) leads to the intensification of an erroneous southwards flow in this region when in situ data are assimilated. The result is an overly intense southward upper mid-ocean transport (0–1100 m) as compared to the estimates derived from the RAPID array. Correction of upper layer zonal density gradients is found to compensate mostly for a weak subtropical gyre circulation in the free model run (i.e. with no assimilation). Despite the important changes to the density structure and transports in the upper layer imposed by the assimilation, very little change is found in the amplitude and sub-seasonal variability of the AMOC. This shows that assimilation of upper layer density information projects mainly on the gyre circulation with little effect on the AMOC at 26° N due to the absence of corrections to density gradients below 2000 m (the maximum depth of Argo). The sensitivity to initial conditions was explored through two additional experiments using a climatological initial condition. These experiments showed that the weak bias in gyre intensity in the control simulation (without data assimilation) develops over the period of about 6 months, but does so independently from the overturning, with no change to the AMOC. However, differences in the properties and volume of North Atlantic Deep Water (NADW) persisted throughout the 3 year simulations resulting in a difference of 3 Sv in AMOC intensity. The persistence of these dense water anomalies and their influence on the AMOC is promising for the development of decadal forecasting capabilities. The results suggest that the deeper waters must be accurately reproduced in order to constrain the AMOC.

Abaca banana trees thrive in the Talaud Islands, North Sulawesi Province, which is the outermost archipelago and is close to the Philippines. In this community service, socialization and training have been held on the processing of Abaca banana trees using a shaved machine (decorticator) into Abaca fiber. The decorticator machine made itself to be taken to the Talaud Islands for training for the people of South Essang District. Socialization to the leaders of Indigenous Peoples and Government expressed their supportive attitude by holding this socialization. And next is the fiber making training that is attended by some people of South Essang District, people can do fiber making and the results after the drying process are in accordance with the quality with a moisture content of less than 30%. Furthermore, will to the use of Abaca fiber will be studied further.

<p><strong>Abstract</strong></p><p>Exploration was conducted to be used for genetic variation improvement of abaca germplasm. It was performed at Sangir Besar Island in Sangihe Achipilago and Karakelang Island in the Talaud Archipilago, both of them were located in the teritorial of Sangihe-Talaud District of North Sulawesi Province, in September 1999. Result indicated that Sangihe-Talaud District had many species of abaca introduced from Philippina. Fifteen accessions of abaca were collected. The difference characters of each accession were identified by stem colour, bloom shape and colour, stem height and diameter, and fibre strength. Those accessions were conserved in the RITFC&amp;rsquo;s Experimental Garden for characterization and evaluation.</p><p><strong>Abstrak</strong></p><p>Untuk memperluas keragaman sumber daya genetik tanaman abaca, telah dilakukan eksplorasi di Pulau Sangir Besar di gugusan Kepulauan Sangihe, dan di Pulau Karakelang di gugusan Kepulauan Talaud, Kabupaten Sangihe-Talaud, Propinsi Sulawesi Utara, pada bulan September 1999. Dari eksplorasi tersebut diketahui bahwa di Kabupaten Sangihe-Talaud, Propinsi Sulawesi Utara khususnya di Pulau Sangir Besar dan Pulau Karakelang, banyak terdapat jenis abaca yang diduga berasal dari Filipina. Diperoleh 15 aksesi abaca dari kedua pulau tersebut. Perbedaan yang mencolok dari masing-masing aksesi terletak pada karakter warna batang, warna dan bentuk jantung, tinggi dan diameter batang serta kekuatan seratnya. Aksesi-aksesi tersebut ditanam di kebun plasma nutfah Balittas untuk karakterisasi dan evaluasi.</p>

Black Sigatoka, which is also known as black leaf streak, is caused by Mycosphaerella fijiensis (anamorph Pseudocercospora [formerly Paracercospora) fijiensis]). It is the most important disease of commercially produced banana (Musa spp.) and also has a major impact on production for local consumption. Although the disease occurs throughout the humid tropics, it has been reported in the Caribbean from only Cuba, Hispaniola, and Jamaica (1). In February 2004, black Sigatoka was observed at two isolated and widely separated sites on Grand Bahama island (26.7°N, 78.5°W and 26.7°N, 78°W) on cvs. Silk AAB and Williams AAA, and a French Horn AAB plantain. Symptoms included wet, dark brown streaks on the adaxial leaf surface, 1 to 2 × 10 mm, with chlorotic haloes. Lesions enlarged to 5 × 20 mm and developed tan, necrotic centers; large, blackened, water-soaked areas that resulted from the coalescence of streaks were rare. The disease was confirmed by observing the following characteristics of P. fijiensis in necrotic lesions on preserved leaf specimens: simple conidiophores with a broadened base and one to several septa, straight to variously bent cercosporoid conidia as much as 100 μm long with two to several septa, and a conspicuously thickened scar at the base. Both plantings were several years old and new planting material that could have been infested with the pathogen had not been introduced since their establishment. Symptoms were not severe and were distributed sporadically in both locations. The disease was not observed at the only other large planting of banana on the island (26.6°N, 78.6°W). The sporadic and apparently new infestations of two of three banana plantings on the island suggest that the pathogen may have arrived recently via natural means, possibly from neighboring Florida (2). In contrast, black Sigatoka appears to have spread to other islands in the Caribbean via infested propagation materials (1). To my knowledge, this is the first report of black Sigatoka in the Bahamas, and with a previous report from Bhutan (1), represents the northernmost spread of this important disease. References: (1) J. Carlier et al. Pages 37–79 in: Diseases of Banana, Abacá and Enset. D. R. Jones, ed. CABI Publishing. Wallingford, UK, 2000. (2) R. C. Ploetz and X. Mourichon. Plant Dis. 83:300, 1999.

The concept of resilience has greatly contributed to the scientific discussion on human–nature interactions by analysing the dynamics, relationships and feedbacks between society and the natural environment at different levels. In this paper, we analyse how culture and societal dynamics influence those connections and, at the same time, have the potential to eventually hinder or foster social-ecological resilience. In order to do so, we take the example of a natural element which is also a cultural icon: the Conch (pronounced ‘konk’). Conch is a marine mollusc with significant social and cultural value for the islands’ society of The Bahamas. In the last decade, a decline in several Conch stocks has been documented, calling for an urgent sustainable management strategy. Nevertheless, only little efforts are happening. This case study offers an innovative understanding of resilience by introducing an aspect which is too often overseen: the role of culture in shaping social-ecological resilience. In this case study, the role of culture proved to be crucial as the cultural significance and embeddedness of Conch has made the management process challenging. But at the same time, culture can be used as a positive impulse towards adaptive management and as a starting point for sustainability. When culture materializes, it affects not only societal dynamics but also the vulnerability and the resilience process of the entire social-ecological system.

MULTITEMPORAL ANALYSIS OF THE TOCANTINS RIVER IN THE MUNICIPALITY OF BAIÃO (PARÁ) AFTER THE CONSTRUCTION OF THE TUCURUÍ HYDROELECTRIC POWER PLANTANALISIS MULTITEMPORAL DEL RÍO TOCANTINS EN EL MUNICIPIO DE BAIÃO (PARÁ) DESPUÉS DE LA CONSTRUCCIÓN DE LA CENTRAL HIDROELÉCTRICA DE TUCURUÍNas últimas décadas, grandes projetos hidroelétricos foram implantados na Amazônia, ocasionando diversos impactos ambientais. No estado do Pará, a construção da Usina Hidrelétrica (UHE) de Tucuruí conferiu modificações físicas no rio Tocantins. Em vista disso, este trabalho teve como principal objetivo analisar as modificações fluviais ocorridas no rio Tocantins, no município de Baião, que fica localizado a jusante UHE de Tucuruí no estado do Pará. Utilizou-se como fonte dados as imagens de satélite Landsat referentes ao ano de 1984 e 1999. Além disso, a análise espacial da dinâmica fluvial partiu da vetorização das margens do canal e das ilhas fluviais em formato de polígono, dos respectivos anos, para análise e quantificação das áreas erodidas e depositadas. Os resultados mostraram uma variação de 4.609.803,07 m² na área do canal fluvial para o período estudado. Essa variação corresponde a um alargamento do canal nos trechos em que houve erosão lateral. As áreas das margens e das ilhas fluviais onde houveram processos erosivos totalizam em 23.110.956 m² enquanto que as áreas de deposição ocorrem predominantemente nas ilhas fluviais e totalizam em uma área de 18.500.761 m². Concluiu-se que houve um aumento dos processos erosivos no trecho do rio Tocantins compreendido nos limites territoriais do município de Baião no período de 15 anos após a construção da UHE de Tucuruí.Palavras-chave: Geomorfologia Fluvial; Erosão; Deposição; Análise Multitemporal; Barragem Hidroelétrica. ABSTRACTIn recent decades, large dam’s hydroelectric projects were implemented in the Amazon and causing significant environmental impacts. In the state of Para, the construction of the Tucuruí Hydroelectric Power Plant (HPP) occasioned modifications in physical environment. The aim of this work was to analyze the river modifications in the Tocantins river in the municipality of Baião, which is located downstream of Tucuruí Hydroelectric Power Plant in the state of Pará. It was used remote sensing techniques using Landsat satellite images for the years 1984 and 199. In addition, the spatial analysis of the river dynamics was based on the vectorization of the river banks and river islands in polygon format, from the respective years, for analysis and quantification of the eroded and deposited areas in the study area. The results showed that the fluvial dynamics presented a variation of 4.609.803,07 m² in the river channel area for the studied period. This variation corresponds to a widening of the canal in the sections where there was lateral erosion. The areas of the banks and river islands where there were erosive processes totaled 23,110,956 m² while the areas of deposition occur in the fluvial islands, totaling in an area of 18,500,761 m². It concludes that there was an increase in the erosion processes in the stretch of the Tocantins river in the city of Baião in the period of 15 years after the construction of the HPP of Tucuruí.Keywords: Fluvial Geomorphology; Erosion; Deposition; Multitemporal Analysis; Hydroelectric Dam.RESUMENEn las últimas décadas, grandes proyectos hidroeléctricos fueron implantados en la Amazonia, ocasionando diversos impactos ambientales. En el estado de Pará, la construcción de la Usina Hidroeléctrica (UHE) de Tucuruí confería modificaciones físicas en el río Tocantins. En vista de eso, este trabajo tuvo como principal objetivo analizar las modificaciones fluviales ocurridas en el río Tocantins, en el municipio de Baião, que se encuentra localizado aguas abajo UHE de Tucuruí en el estado de Pará. Se utilizó como fuente datos las imágenes de satélite Landsat referentes a los años 1984 y 1999. Además, el análisis espacial de la dinámica fluvial partió de la vectorización de los márgenes del canal y de las islas fluviales en formato de polígono, de los respectivos años, para análisis y cuantificación de las áreas erosionadas y depositadas. Los resultados mostraron una variación de 4.609.803,07 m² en el área del canal fluvial para el período estudiado. Esta variación corresponde a una ampliación del canal en los locales en que hubo erosión lateral. Las áreas de los márgenes y de las islas fluviales donde hubo procesos erosivos totalizan en 23.110.956 m² mientras que las áreas de deposición ocurren predominantemente en las islas fluviales y totalizan en un área de 18.500.761 m². Se concluyó que hubo un aumento de los procesos erosivos en el tramo del río Tocantins comprendido en los límites territoriales del municipio de Baião en el período de 15 años después de la construcción de la UHE de Tucuruí.Palabras clave: Geomorfología Fluvial; Erosión; Deposición; Análisis Multitemporal; Presa Hidroeléctrica.

AbstractWe present 10 nearly complete mitochondrial genomes of the extinct tortoise Chelonoidis alburyorum from the Bahamas. While our samples represent morphologically distinct populations from six islands, their genetic divergences were shallow and resembled those among Galápagos tortoises. Our molecular clock estimates revealed that divergence among Bahamian tortoises began ~ 1.5 mya, whereas divergence among the Galápagos tortoises (C. niger complex) began ~ 2 mya. The inter-island divergences of tortoises from within the Bahamas and within the Galápagos Islands are much younger (0.09–0.59 mya, and 0.08–1.43 mya, respectively) than the genetic differentiation between any other congeneric pair of tortoise species. The shallow mitochondrial divergences of the two radiations on the Bahamas and the Galápagos Islands suggest that each archipelago sustained only one species of tortoise, and that the taxa currently regarded as distinct species in the Galápagos should be returned to subspecies status. The extinct tortoises from the Bahamas have two well-supported clades: the first includes one sample from Great Abaco and two from Crooked Island; the second clade includes tortoises from Great Abaco, Eleuthera, Crooked Island, Mayaguana, Middle Caicos, and Grand Turk. Tortoises belonging to both clades on Great Abaco and Crooked Island suggest late Holocene inter-island transport by prehistoric humans.

Clues in sediments show that once humans arrived on Great Abaco Island, they hunted large reptiles to extinction and burned the old hardwoods and palms, leading to new pine- and mangrove-dominated lands.

Abstract The northern Bahamas have experienced more frequent intense-hurricane impacts than almost anywhere else in the Atlantic since 1850 CE. In 2019, category 5 (Saffir-Simpson scale) Hurricane Dorian demonstrated the destructive potential of these natural hazards. Problematically, determining whether high hurricane activity levels remained constant through time is difficult given the short observational record (< 170 years). We present a 700-year long, near-annually resolved stratigraphic record of hurricane passage near Thatchpoint Blue Hole (TPBH) on Abaco Island, The Bahamas. Using longer sediment cores (888 cm) and more reliable age-control, this study revises and temporally expands a previous study from TPBH that underestimated the sedimentation rate. TPBH records at least 13 ≥ category 2 hurricanes per century between 1500 to 1670 CE, which exceeds the 9 ≥ category 2 hurricanes per century within 50 km of TPBH since 1850 CE. The eastern United States also experienced frequent hurricanes from 1500 to 1670 CE, but frequency was depressed elsewhere in the Atlantic Ocean. This suggests that spatial heterogeneity in Atlantic hurricane activity since 1850 CE could have persisted throughout the last millennium. This heterogeneity is impacted by climatic and stochastic forcing, but additional high-resolution paleo-hurricane reconstructions are required to assess the mechanisms that impact regional variability.

The UP Manila Health Policy Development Hub recognizes the invaluable contribution of the participants in theseries of roundtable discussions listed below: RTD: Beyond Hospital Beds: Equity,quality, and service1. Ma. Esmeralda C. Silva, MPAf, MSPPM, PhD,Faculty, College of Public Health, UP Manila2. Leonardo R. Estacio, Jr., MCD, MPH, PhD, Dean,College of Arts and Sciences, UP Manila3. Michael Antonio F. Mendoza, DDM, MM, Faculty,College of Dentistry, UP Manila4. Hilton Y. Lam, MHA, PhD, Chair, UP Manila HealthPolicy Development Hub; Director, Institute of HealthPolicy and Development Studies, University of thePhilippines Manila5. Irma L. Asuncion, MHA, CESO III, Director IV,Bureau of Local Health Systems Development,Department of Health6. Renely Pangilinan-Tungol, MD, CFP, MPM-HSD,Municipal Health Officer, San Fernando, Pampanga7. Salome F. Arinduque, MD, Galing-Pook AwardeeRepresentative, Municipal Health Officer, San Felipe,Zambales8. Carmelita C. Canila, MD, MPH, Faculty, College ofPublic Health, University of the Philippines Manila9. Lester M. Tan, MD, MPH, Division Chief, Bureau ofLocal Health System Development, Department ofHealth10. Anthony Rosendo G. Faraon, MD, Vice President,Zuellig Family Foundation (ZFF)11. Albert Francis E. Domingo, MD, Consultant, HealthSystem strengthening through Public Policy andRegulation, World Health Organization12. Jesus Randy O. Cañal, MD, FPSO-HNS, AssociateDirector, Medical and Regulatory Affairs, AsianHospital and Medical Center13. Christian Edward L. Nuevo, Health Policy and SystemsResearch Fellow, Health Policy Development andPlanning Bureau, Department of Health14. Paolo Victor N. Medina, MD, Assistant Professor 4,College of Medicine, University of the PhilippinesManila15. Jose Rafael A. Marfori, MD, Special Assistant to theDirector, Philippine General Hospital16. Maria Teresa U. Bagaman, Committee Chair, PhilippineSociety for Quality, Inc.17. Maria Theresa G. Vera, MSc, MHA, CESO III, DirectorIV, Health Facility Development Bureau, Departmentof Health18. Ana Melissa F. Hilvano-Cabungcal, MD, AssistantAssociate Dean for Planning & Development, Collegeof Medicine, University of the Philippines Manila19. Fevi Rose C. Paro, Faculty, Department of Communityand Environmental Resource Planning, University ofthe Philippines Los Baños20. Maria Rosa C. Abad, MD, Medical Specialist III,Standard Development Division, Health Facilities andServices Regulation21. Yolanda R. Robles, RPh, PhD, Faculty, College ofPharmacy, University of the Philippines Manila22. Jaya P. Ebuen, RN, Development Manager Officer,CHDMM, Department of Health23. Josephine E. Cariaso, MA, RN, Assistant Professor,College of Nursing, University of the Philippines Manila24. Diana Van Daele, Programme Manager, CooperationSection, European Union25. Maria Paz de Sagun, Project Management Specialist,USAID26. Christopher Muñoz, Member, Yellow Warriors SocietyPhilippinesRTD: Health services and financingroles: Population based- andindividual-based1. Hilton Y. Lam, MHA, PhD, Chair, University of thePhilippines Manila Health Policy Development Hub;Director, Institute of Health Policy and DevelopmentStudies, University of the Philippines Manila2. Ma. Esmeralda C. Silva, MPAf, MSPPM, PhD,Faculty, College of Public Health, University of thePhilippines Manila3. Leonardo R. Estacio, Jr., MCD, MPH, PhD, Dean,College of Arts and Sciences, University of thePhilippines Manila4. Michael Antonio F. Mendoza, DDM, MM, Faculty,College of Dentistry, University of the PhilippinesManila5. Mario C. Villaverde, Undersecretary, Health Policyand Development Systems and Development Team,Department of Health6. Jaime Z. Galvez Tan, MD, Former Secretary, Department of Health7. Marvin C. Galvez, MD, OIC Division Chief, BenefitsDevelopment and Research Department, PhilippineHealth Insurance Corporation8. Alvin B. Caballes, MD, MPE, MPP, Faculty, Collegeof Medicine, University of the Philippines Manila9. Carlos D. Da Silva, Executive Director, Association ofMunicipal Health Maintenance Organization of thePhilippines, Inc.10. Anthony Rosendo G. Faraon, MD, Vice President,Zuellig Family Foundation (ZFF) 11. Albert Francis E. Domingo, MD, Consultant, HealthSystem strengthening through Public Policy andRegulation, World Health Organization12. Salome F. Arinduque, MD, Galing-Pook AwardeeRepresentative, Municipal Health Officer, San Felipe,Zambales13. Michael Ralph M. Abrigo, PhD, Research Fellow,Philippine Institute for Developmental Studies14. Oscar D. Tinio, MD, Committee Chair, Legislation,Philippine Medical Association15. Rogelio V. Dazo, Jr., MD, FPCOM, Legislation,Philippine Medical Association16. Ligaya V. Catadman, MM, Officer-in-charge, HealthPolicy Development and Planning Bureau, Department of Health17. Maria Fatima Garcia-Lorenzo, President, PhilippineAlliance of Patients Organization18. Tomasito P. Javate, Jr, Supervising Economic DevelopmentSpecialist, Health Nutrition and Population Division,National Economic and Development Authority19. Josefina Isidro-Lapena, MD, National Board ofDirector, Philippine Academy of Family Physicians20. Maria Eliza Ruiz-Aguila, MPhty, PhD, Dean, Collegeof Allied Medical Professions, University of thePhilippines Manila21. Ana Melissa F. Hilvano-Cabungcal, MD, AssistantAssociate Dean for Planning & Development, College ofMedicine, University of the Philippines Manila22. Maria Paz P. Corrales, MD, MHA, MPA, Director III,Department of Health-National Capital Region23. Karin Estepa Garcia, MD, Executive Secretary, PhilippineAcademy of Family Physicians24. Adeline A. Mesina, MD, Medical Specialist III,Philippine Health Insurance Corporation25. Glorey Ann P. Alde, RN, MPH, Research Fellow,Department of HealthRTD: Moving towards provincelevel integration throughUniversal Health Care Act1. Hilton Y. Lam, MHA, PhD, Chair, University of thePhilippines Manila Health Policy Development Hub;Director, Institute of Health Policy and DevelopmentStudies, University of the Philippines Manila2. Ma. Esmeralda C. Silva, MPAf, MSPPM, PhD,Faculty, College of Public Health, University of thePhilippines Manila3. Leonardo R. Estacio, Jr., MCD, MPH, PhD, Dean,College of Arts and Sciences, University of thePhilippines Manila4. Michael Antonio F. Mendoza, DDM, MM, Faculty,College of Dentistry, University of the PhilippinesManila5. Mario C. Villaverde, Undersecretary of Health, HealthPolicy and Development Systems and DevelopmentTeam, Department of Health6. Ferdinand A. Pecson, Undersecretary and ExecutiveDirector, Public Private Partnership Center7. Rosanna M. Buccahan, MD, Provincial Health Officer,Bataan Provincial Office8. Lester M. Tan, MD, Division Chief, Bureau of LocalHealth System Development, Department of Health9. Ernesto O. Domingo, MD, FPCP, FPSF, FormerChancellor, University of the Philippines Manila10. Albert Francis E. Domingo, MD, Consultant, HealthSystem strengthening through Public Policy andRegulation, World Health Organization11. Leslie Ann L. Luces, MD, Provincial Health Officer,Aklan12. Rene C. Catan, MD, Provincial Health Officer, Cebu13. Anthony Rosendo G. Faraon, MD, Vice President,Zuellig Family Foundation14. Jose Rafael A. Marfori, MD, Special Assistant to theDirector, Philippine General Hospital15. Jesus Randy O. Cañal, MD, FPSO-HNS, Consultant,Asian Hospital and Medical Center16. Ramon Paterno, MD, Member, Universal Health CareStudy Group, University of the Philippines Manila17. Mayor Eunice U. Babalcon, Mayor, Paranas, Samar18. Zorayda E. Leopando, MD, Former President,Philippine Academy of Family Physicians19. Madeleine de Rosas-Valera, MD, MScIH, SeniorTechnical Consultant, World Bank20. Arlene C. Sebastian, MD, Municipal Health Officer,Sta. Monica, Siargao Island, Mindanao21. Rizza Majella L. Herrera, MD, Acting Senior Manager,Accreditation Department, Philippine Health InsuranceCorporation22. Alvin B. Caballes, MD, MPE, MPP, Faculty, Collegeof Medicine, University of the Philippines Manila23. Pres. Policarpio B. Joves, MD, MPH, MOH, FPAFP,President, Philippine Academy of Family Physicians24. Leilanie A. Nicodemus, MD, Board of Director,Philippine Academy of Family Physicians25. Maria Paz P. Corrales, MD, MHA, MPA, Director III,National Capital Region Office, Department of Health26. Dir. Irma L. Asuncion, MD, MHA, CESO III, DirectorIV, Bureau of Local Health Systems Development,Department of Health27. Bernard B. Argamosa, MD, Mental Health Representative, National Center for Mental Health28. Flerida Chan, Chief, Poverty Reduction Section, JapanInternational Cooperation Agency29. Raul R. Alamis, Chief Health Program Officer, ServiceDelivery Network, Department of Health30. Mary Anne Milliscent B. Castro, Supervising HealthProgram Officer, Department of Health 31. Marikris Florenz N. Garcia, Project Manager, PublicPrivate Partnership Center32. Mary Grace G. Darunday, Supervising Budget andManagement Specialist, Budget and Management Bureaufor the Human Development Sector, Department ofBudget and Management33. Belinda Cater, Senior Budget and Management Specialist,Department of Budget and Management34. Sheryl N. Macalipay, LGU Officer IV, Bureau of LocalGovernment and Development, Department of Interiorand Local Government35. Kristel Faye M. Roderos, OTRP, Representative,College of Allied Medical Professions, University ofthe Philippines Manila36. Jeffrey I. Manalo, Director III, Policy Formulation,Project Evaluation and Monitoring Service, PublicPrivate Partnership Center37. Atty. Phebean Belle A. Ramos-Lacuna, Division Chief,Policy Formulation Division, Public Private PartnershipCenter38. Ricardo Benjamin D. Osorio, Planning Officer, PolicyFormulation, Project Evaluation and MonitoringService, Public Private Partnership Center39. Gladys Rabacal, Program Officer, Japan InternationalCooperation Agency40. Michael Angelo Baluyot, Nurse, Bataan Provincial Office41. Jonna Jane Javier Austria, Nurse, Bataan Provincial Office42. Heidee Buenaventura, MD, Associate Director, ZuelligFamily Foundation43. Dominique L. Monido, Policy Associate, Zuellig FamilyFoundation44. Rosa Nene De Lima-Estellana, RN, MD, Medical OfficerIII, Department of Interior and Local Government45. Ma Lourdes Sangalang-Yap, MD, FPCR, Medical OfficerIV, Department of Interior and Local Government46. Ana Melissa F. Hilvano-Cabungcal, MD, AssistantAssociate Dean for Planning & Development, College ofMedicine, University of the Philippines Manila47. Colleen T. Francisco, Representative, Department ofBudget and Management48. Kristine Galamgam, Representative, Department ofHealth49. Fides S. Basco, Officer-in-charge, Chief Budget andManagement Specialist, Development of Budget andManagementRTD: Health financing: Co-paymentsand Personnel1. Hilton Y. Lam, MHA, PhD, Chair, University of thePhilippines Manila Health Policy Development Hub;Director, Institute of Health Policy and DevelopmentStudies, University of the Philippines Manila2. Ma. Esmeralda C. Silva, MPAf, MSPPM, PhD,Faculty, College of Public Health, University of thePhilippines Manila3. Leonardo R. Estacio, Jr., MCD, MPH, PhD, Dean,College of Arts and Sciences, University of thePhilippines Manila4. Michael Antonio F. Mendoza, DDM, MM, Faculty,College of Dentistry, University of the Philippines Manila5. Ernesto O. Domingo, MD, Professor Emeritus,University of the Philippines Manila6. Irma L. Asuncion, MHA, CESO III, Director IV,Bureau of Local Health Systems Development,Department of Health7. Lester M. Tan, MD, MPH, Division Chief, Bureau ofLocal Health System Development, Department ofHealth8. Marvin C. Galvez, MD, OIC Division Chief, BenefitsDevelopment and Research Department, PhilippineHealth Insurance Corporation9. Adeline A. Mesina, MD, Medical Specialist III, BenefitsDepartment and Research Department, PhilippineHealth Insurance Corporation10. Carlos D. Da Silva, Executive Director, Association ofHealth Maintenance Organization of the Philippines,Inc.11. Ma. Margarita Lat-Luna, MD, Deputy Director, FiscalServices, Philippine General Hospital12. Waldemar V. Galindo, MD, Chief of Clinics, Ospital ngMaynila13. Albert Francis E. Domingo, MD, Consultant, HealthSystem strengthening through Public Policy andRegulation, World Health Organization14. Rogelio V. Dazo, Jr., MD, Member, Commission onLegislation, Philippine Medical Association15. Aileen R. Espina, MD, Board Member, PhilippineAcademy of Family Physicians16. Anthony R. Faraon, MD, Vice President, Zuellig FamilyFoundation17. Jesus Randy O. Cañal, Associate Director, Medical andRegulatory Affairs, Asian Hospital and Medical Center18. Jared Martin Clarianes, Technical Officer, Union of LocalAuthorities of the Philippines19. Leslie Ann L. Luces, MD, Provincial Health Officer,Aklan20. Rosa Nene De Lima-Estellana, MD, Medical OfficerIII, Department of the Interior and Local Government21. Ma. Lourdes Sangalang-Yap, MD, Medical Officer V,Department of the Interior and Local Government 22. Dominique L. Monido, Policy Associate, Zuellig FamilyFoundation23. Krisch Trine D. Ramos, MD, Medical Officer, PhilippineCharity Sweepstakes Office24. Larry R. Cedro, MD, Assistant General Manager, CharitySector, Philippine Charity Sweepstakes Office25. Margarita V. Hing, Officer in Charge, ManagementDivision, Financial Management Service Sector,Department of Health26. Dr. Carlo Irwin Panelo, Associate Professor, College ofMedicine, University of the Philippines Manila27. Dr. Angelita V. Larin, Faculty, College of Public Health,University of the Philippines Manila28. Dr. Abdel Jeffri A. Abdulla, Chair, RegionalizationProgram, University of the Philippines Manila29. Christopher S. Muñoz, Member, Philippine Alliance ofPatients Organization30. Gemma R. Macatangay, LGOO V, Department ofInterior and Local Government – Bureau of LocalGovernment Development31. Dr. Narisa Portia J. Sugay, Acting Vice President, QualityAssurance Group, Philippine Health InsuranceCorporation32. Maria Eliza R. Aguila, Dean, College of Allied MedicalProfessions, University of the Philippines Manila33. Angeli A. Comia, Manager, Zuellig Family Foundation34. Leo Alcantara, Union of Local Authorities of thePhilippines35. Dr. Zorayda E. Leopando, Former President, PhilippineAcademy of Family Physicians36. Dr. Emerito Jose Faraon, Faculty, College of PublicHealth, University of the Philippines Manila37. Dr. Carmelita C. Canila, Faculty, College of PublicHealth, University of the Philippines ManilaRTD: Moving towards third partyaccreditation for health facilities1. Hilton Y. Lam, MHA, PhD, Chair, University of thePhilippines Manila Health Policy Development Hub;Director, Institute of Health Policy and DevelopmentStudies, University of the Philippines Manila2. Ma. Esmeralda C. Silva, MPAf, MSPPM, PhD,Faculty, College of Public Health, University of thePhilippines Manila3. Leonardo R. Estacio, Jr., MCD, MPH, PhD, Dean,College of Arts and Sciences, University of thePhilippines Manila4. Michael Antonio F. Mendoza, DDM, MM, Faculty,College of Dentistry, University of the PhilippinesManila5. Rizza Majella L. Herrera, MD, Acting SeniorManager, Accreditation Department, Philippine HealthInsurance Corporation6. Bernadette C. Hogar-Manlapat, MD, FPBA, FPSA,FPSQua, MMPA, President and Board of Trustee,Philippine Society for Quality in Healthcare, Inc.7. Waldemar V. Galindo, MD, Chief of Clinics, Ospital ngMaynila8. Amor. F. Lahoz, Division Chief, Promotion andDocumentation Division, Department of Trade andIndustry – Philippine Accreditation Bureau9. Jenebert P. Opinion, Development Specialist, Department of Trade and Industry – Philippine AccreditationBureau10. Maria Linda G. Buhat, President, Association ofNursing Service Administrators of the Philippines, Inc.11. Bernardino A. Vicente, MD, FPPA, MHA, CESOIV, President, Philippine Tripartite Accreditation forHealth Facilities, Inc.12. Atty. Bu C. Castro, MD, Board Member, PhilippineHospital Association13. Cristina Lagao-Caalim, RN, MAN, MHA, ImmediatePast President and Board of Trustee, Philippine Societyfor Quality in Healthcare, Inc.14. Manuel E. Villegas Jr., MD, Vice Treasurer and Board ofTrustee, Philippine Society for Quality in Healthcare,Inc.15. Michelle A. Arban, Treasurer and Board of Trustee,Philippine Society for Quality in Healthcare, Inc.16. Joselito R. Chavez, MD, FPCP, FPCCP, FACCP,CESE, Deputy Executive Director, Medical Services,National Kidney and Transplant Institute17. Blesilda A. Gutierrez, CPA, MBA, Deputy ExecutiveDirector, Administrative Services, National Kidney andTransplant Institute18. Eulalia C. Magpusao, MD, Associate Director, Qualityand Patient Safety, St. Luke’s Medical Centre GlobalCity19. Clemencia D. Bondoc, MD, Auditor, Association ofMunicipal Health Officers of the Philippines20. Jesus Randy O. Cañal, MD, FPSO-HNS, AssociateDirector, Medical and Regulatory Affairs, Asian Hospitaland Medical Center21. Maria Fatima Garcia-Lorenzo, President, PhilippineAlliance of Patient Organizations22. Leilanie A. Nicodemus, MD, Board of Directors,Philippine Academy of Family Physicians23. Policarpio B. Joves Jr., MD, President, PhilippineAcademy of Family Physicians24. Kristel Faye Roderos, Faculty, College of Allied MedicalProfessions, University of the Philippines Manila25. Ana Melissa Hilvano-Cabungcal, MD, AssistantAssociate Dean, College of Medicine, University of thePhilippines Manila26. Christopher Malorre Calaquian, MD, Faculty, Collegeof Medicine, University of the Philippines Manila27. Emerito Jose C. Faraon, MD, Faculty, College ofPublic Health, University of the Philippines Manila 28. Carmelita Canila, Faculty, College of Public Health,University of the Philippines Manila29. Oscar D. Tinio, MD, Representative, Philippine MedicalAssociation30. Farrah Rocamora, Member, Philippine Society forQuality in Healthcare, IncRTD: RA 11036 (Mental Health Act):Addressing Mental Health Needs ofOverseas Filipino Workers1. Hilton Y. Lam, MHA, PhD, Chair, University of thePhilippines Manila Health Policy Development Hub;Director, Institute of Health Policy and DevelopmentStudies, University of the Philippines Manila2. Leonardo R. Estacio, Jr., MCD, MPH, PhD, UPManila Health Policy Development Hub; College ofArts and Sciences, UP Manila3. Ma. Esmeralda C. Silva, MPAf, MSPPM, PhD, UPManila Health Policy Development Hub; College ofPublic Health, UP Manila4. Michael Antonio F. Mendoza, DDM, UP ManilaHealth Policy Development Hub; College of Dentistry,UP Manila5. Frances Prescilla L. Cuevas, RN, MAN, Director,Essential Non-Communicable Diseases Division,Department of Health6. Maria Teresa D. De los Santos, Workers Education andMonitoring Division, Philippine Overseas EmploymentAdministration7. Andrelyn R. Gregorio, Policy Program and Development Office,Overseas Workers Welfare Administration8. Sally D. Bongalonta, MA, Institute of Family Life &Children Studies, Philippine Women’s University9. Consul Ferdinand P. Flores, Department of ForeignAffairs10. Jerome Alcantara, BLAS OPLE Policy Center andTraining Institute11. Andrea Luisa C. Anolin, Commission on FilipinoOverseas12. Bernard B. Argamosa, MD, DSBPP, National Centerfor Mental Health13. Agnes Joy L. Casino, MD, DSBPP, National Centerfor Mental Health14. Ryan Roberto E. Delos Reyes, Employment Promotionand Workers Welfare Division, Department of Laborand Employment15. Sheralee Bondad, Legal and International AffairsCluster, Department of Labor and Employment16. Rhodora A. Abano, Center for Migrant Advocacy17. Nina Evita Q. Guzman, Ugnayan at Tulong para saMaralitang Pamilya (UGAT) Foundation, Inc.18. Katrina S. Ching, Ugnayan at Tulong para sa MaralitangPamilya (UGAT) Foundation, Inc.RTD: (Bitter) Sweet Smile of Filipinos1. Dr. Hilton Y. Lam, Institute of Health Policy andDevelopment Studies, NIH2. Dr. Leonardo R. Estacio, Jr., College of Arts andSciences, UP Manila3. Dr. Ma. Esmeralda C. Silva, College of Public Health,UP Manila4. Dr. Michael Antonio F. Mendoza, College of Dentistry,UP Manila5. Dr. Ma. Susan T. Yanga-Mabunga, Department ofHealth Policy & Administration, UP Manila6. Dr. Danilo L. Magtanong, College of Dentistry, UPManila7. Dr. Alvin Munoz Laxamana, Philippine DentalAssociation8. Dr. Fina Lopez, Philippine Pediatric Dental Society, Inc9. Dr. Artemio Licos, Jr.,Department of Health NationalAssociation of Dentists10. Dr. Maria Jona D. Godoy, Professional RegulationCommission11. Ms. Anna Liza De Leon, Philippine Health InsuranceCorporation12. Ms. Nicole Sigmuend, GIZ Fit for School13. Ms. Lita Orbillo, Disease Prevention and Control Bureau14. Mr. Raymond Oxcena Akap sa Bata Philippines15. Dr. Jessica Rebueno-Santos, Department of CommunityDentistry, UP Manila16. Ms. Maria Olivine M. Contreras, Bureau of LocalGovernment Supervision, DILG17. Ms. Janel Christine Mendoza, Philippine DentalStudents Association18. Mr. Eric Raymund Yu, UP College of DentistryStudent Council19. Dr. Joy Memorando, Philippine Pediatric Society20. Dr. Sharon Alvarez, Philippine Association of DentalColleges

In the summer of 1944, American Sergeant Paul Dorsey was hired by the Naval Aviation Photography Unit (NAPU) to capture “the Marines’ bitter struggle against their determined foe” in the Pacific islands (Philips 43). Dorsey had been a photographer and photojournalist before enlisting in the Marines, and was thus well placed to fulfil the NAPU’s remit of creating positive images of American forces in the Pacific. Under the editorial and professional guidance of Edward Steichen, NAPU photographers like Dorsey provided epic images of battle (especially from the air and sea), and also showed American forces at ease – sunbathing, swimming, drinking and relaxing together (Bachner At Ease; Bachner Men of WWII). Steichen – by now a lieutenant commander – oversaw the entire NAPU project by developing, choosing and editing the images, and also providing captions for their reproduction in popular newspapers and magazines such as LIFE. Under his guidance, selected NAPU images were displayed at the famous Power in the Pacific exhibition at the Museum of Modern Art in New York at the end of the war, and distributed in the popular U.S. Navy War Photographs memorial book which sold over 6 million copies in 1945.While the original NAPU photographers (Steichen himself, Charles Kerlee, Horace Bristol, Wayne Miller, Charles Fenno Jacobs, Victor Jorgensen and Dwight Long) had been at work in the Pacific since the summer of 1942, Dorsey was hired specifically to document the advance of American Marines through the Marianas and Volcano Islands. In line with the NAPU’s remit, Dorsey provided a number of famous rear view shots of combat action on Guam, Saipan and Iwo Jima. However, there are a number of his photographs that do not fit easily within that vision of war – images of wounded Marines and dead Japanese soldiers, as well as shots of abject Japanese POWs with their heads bowed and faces averted. It is this last group of enemy images that proves the most interesting, for not only do they trouble NAPU’s explicit propaganda framework, they also challenge our traditional assumption that photography is an inert form of representation.It is not hard to imagine that photographs of abject Japanese POWs reinforced feelings of triumph, conquest and justice that circulated in America’s post-war victory culture. Indeed, images of emaciated and incarcerated Japanese soldiers provided the perfect contrast to the hyper-masculine, hard-bodied, beefcake figures that populated the NAPU photographs and symbolized American power in the Pacific. However, once Japan was rehabilitated into a powerful American ally, and the decision to drop the atomic bomb was questioned once again in America’s Culture Wars of the 1980s and 90s, it was no longer acceptable to feel triumphant in the face of Japanese abjection and suffering. Instead, these images helped foster a new kind of belated patriotism – and a new global disposition – in which Americans generated their own magnanimity by expressing pity, compassion and sympathy for victims of their previous foreign policy decisions (Lisle).While that patriotic interpretive framework tells us much about how dominant formations of American identity are secured by the production – especially the visual production – of enemy others, it cannot account for images or viewer interpretations that exceed, unwork, or disrupt war’s foundational logics of friend/enemy and perpetrator/victim. I focus on Dorsey because he offers one such ‘deviant’ image: This photograph was taken by Dorsey on Guam in July 1944, and its caption tells us that the Japanese prisoner “waits to be questioned by intelligence officers” (Philips 189). As the POW looks into Dorsey’s camera lens (and therefore at us, the viewers), he is subject to the collective gaze of the American marines situated behind him, and presumably others that lay out of the frame, behind Dorsey. What is fascinating about this particular image is the prisoner’s refusal to obey the trope of abjection so readily assumed by other Japanese POWs documented in the NAPU archive and in other popular war-time imagery. Indeed, when I first encountered this image I immediately framed the POW’s return gaze as defiant – a challenging, bold, and forceful reply to American aggression in the Pacific. The problem, of course, was that this resistant gaze soon became reductive; that is, by replicating war’s foundational logics of difference it effaced a number of other dispositions at work in the photograph. What I find compelling about the POW’s return gaze is its refusal to be contained within the available subject positions of either ‘abject POW’ or ‘defiant resistor’. Indeed, this unruliness is what keeps me coming back to Dorsey’s image, for it teaches us that photography itself always exceeds the conventional assumption that it is a static form of visual representation.Photography, Animation, MovementThe connections between movement, stillness and photography have two important starting points. The first, and more general, is Walter Benjamin’s concept of the dialectic image in which the past and the present come together “in a flash” and constitute what he calls “dialectics at a standstill” (N3.1; 463). Unlike Theodore Adorno, who lamented Benjamin’s Medusa-like tendency to turn the world to stone, I read Benjamin’s concept of standstill – of stillness in general – as something fizzing and pulsating with “political electricity” (Adorno 227-42; Buck-Morss 219). This is to deny our most basic assumption about photography: that it is an inert visual form that freezes and captures discrete moments in time and space. My central argument is that photography’s assumed stillness is always constituted by a number of potential and actual mobilities that continually suture and re-suture viewing subjects and images into one another.Developing Benjamin’s idea of a the past and present coming together “in a flash”, Roland Barthes provides the second starting point with his notion of the punctum of photography: “this element which rises from the scene, shoots out of it like an arrow, and pierces me” (25). Conventional understandings of the punctum frame it as a static moment – so powerful that it freezes the viewer, stops them in their tracks, and captures their attention. My point is that the affective punch of the photograph is not a frozen moment at all; rather, the punctum – like the dialectic image – is fizzing with political electricity. Therefore, to suggest that a viewing subject is arrested in the moment of perception – that they are somehow captured by a photograph’s meaning – is to mistakenly understand the act of looking as a static behaviour.I want to use Dorsey’s image of the POW to push these theoretical starting points and explore the mobile dispositions that are generated when a viewing subject encounters a photograph. What most interests me about Dorsey’s photograph is the level of animation it produces. The POW’s return gaze is actually rather blank: it is unclear whether he is angry, weary, bored, insane or none of the above. But it is the viewing subject’s anxiety at such ambivalence – such unknowability – that provokes a powerful desire to name it. The visceral sensations and emotional responses provoked in viewers (are we taken aback? Do we sympathize with the POW? Are we equally blank?) very quickly become settled interpretations, for example, “his defiant gaze resists American power.” What I want to do is explore the pre-interpretive moment when images like Dorsey’s reach out and grab us – for it is in that moment that photography’s “political electricity” reveals itself most clearly.Production, Signification, InterpretationThe mobility inherent in the photograph has an important antecedent at the level of production. Since the Brownie camera was introduced in WWI, photographers have carried their mode of representation with them – in Dorsey’s case, his portable camera was carried with him as he travelled with the Marines through the Pacific (Philips 29). It is the photographer’s itinerary – his or her movement prior to clicking the camera’s shutter – that shapes and determines a photograph’s content. More to the point, the action of clicking the camera’s shutter is never an isolated moment; rather, it is punctured by all of the previous clicks and moments leading up to it – especially on a long photographic assignment like Dorsey’s – and contains within it all of the subsequent clicks and moments that potentially come after it. In this sense, the photographer’s click recalls Benjamin: it is a “charged force field of past and present” (Buck-Morss 219). That complicated temporality is also manifested in the photographer’s contact sheet (or, more recently, computer file) which operates as a visual travelogue of discrete moments that bleed into one another.The mobility inherent in photography extends itself into the level of signification; that is, the arrangements of signs depicted within the frame of each discrete image. Critic Gilberto Perez gives us a clue to this mobility in his comments about Eugène Atget’s famous ‘painterly’ photographs of Paris:A photograph begins with the mobility, or at least potential mobility, of the world’s materials, of the things reproduced from reality, and turns that into a still image. More readily than in a painting, we see things in a photograph, even statues, as being on the point of movement, for these things belong to the world of flux from which the image has been extracted (328).I agree that the origin point of a photograph is potential mobility, but that mobility is never completely vanquished when it is turned into a still image. For me, photographs – no matter what they depict – are always saturated with the “potential mobility of the world’s materials”, and in this sense they are never still. Indeed, the world of flux out of which the image is extracted includes the image itself, and in that sense, an image can never be isolated from the world it is derived from. If we follow Perez and characterize the world as one of flux, but then insist that the photograph can never be extracted from that world, it follows that the photograph, too, is characterized by fluctuation and change – in short, by mobility. The point, here, is to read a photograph counter intuitively – not as an arrest of movement or a freezing of time, but as a collection of signs that is always potentially mobile. This is what Roland Barthes was hinting at when he suggested that a photograph is “a mad image, chafed by reality”: any photograph is haunted by absence because the depicted object is no longer present, but it is also full of certainty that the depicted object did exist at a previous time and place (113-15). This is precisely Benjamin’s point as well, that “what has been comes together with the now” (N3.1; 463). Following on from Barthes and Benjamin, I want to argue that photographs don’t freeze a moment in time, but instead set in motion a continual journey between feelings of absence in the present (i.e. “it is not there”) and present imaginings of the past (i.e. “but it has indeed been”).As Barthes’ notion of the punctum reveals, the most powerful register at which photography’s inherent mobility operates is in the sensations, responses and feelings provoked in viewers. This is why we say that a photograph has the capacity to move us: the best images take us from one emotional state (e.g. passive, curious, bored) and carry us into another (e.g. shocked, sad, amused). It is this emotional terrain of our responses to photography that both Roland Barthes and Susan Sontag have explored in depth. Why are we moved by some images and not others? Are documentary or artistic photographs more likely to reach out and prick us? What is the most appropriate or ethical response to pictures of another’s suffering?Sontag suggests a different connection between photography and mobility in that it enables a particular touristification of the world; that is, cameras help “convert the world into a department store or museum-without-walls in which every subject is depreciated into an article of consumption, promoted to an item for aesthetic appreciation” (On Photography 110). While Sontag’s political economy of photography (with its Frankfurt School echo) continues to be explored by anthropologists and scholars in Tourism Studies, I want to argue that it offers a particularly reductive account of photography’s potential mobilities. While Sontag does address photography’s constitutive and rather complex relationship with reality, she still conceives of photographs themselves as static and inert representations. Indeed, what she wrestled with in On Photography was the “insolent, poignant stasis of each photograph”, and the photograph’s capacity to make reality “stand still” (111-12; 163). The problem with such a view is that it limits our account of interpretation; in short, it suggests that viewers either accept a photograph’s static message (and are thus moved), or reject it (and remain unmoved). But the moving, here, is the sole prerogative of the viewer: there is no sense in which the photograph and its contents are themselves mobile. I want to argue that the relationships established in the act of looking between viewing subjects and the objects contained within an image are much more complex and varied than Sontag’s framework suggests. Photography’s Affective MobilityTo reveal the mobilities underscoring photography’s affective punch, we must redistribute its more familiar power relations through W.J.T. Mitchell’s important question: what do pictures want? Such a question subverts our usual approach to photographs (i.e. what do we want from photographs?) by redeploying the privileged agency of the viewer into the image itself. In other words, it is the image that demands something of the viewer rather than the other way around. What it demands, of course, is a response. Certainly this is an emotional response, for even being bored by a photograph is a response of sorts. But an emotional response is also an affective response, which means that the punch carried by a photograph is as physical as it is metaphorical or visual. Indeed, it is precisely in the act of perception, where the emotional and the affective fuse, that photography’s assumed stillness is powerfully subverted.If Mitchell animates the picture by affording it some of the viewer’s agency, then Gilles Deleuze goes one step further by exploring what happens to agency in the act of perception. For Deleuze, a work of art – for our purposes, a photograph – is not an inert or still document, but rather a “block of sensations” (Deleuze; Deleuze & Guattari; Bogue). It is not a finished object produced by an autonomous artist or beheld in its entirety by an autonomous viewer; rather, it is a combination of precepts (initial perceptions) and affects (physical intensities) that passes through all subjects at the point of visual perception. This kind of relational encounter with an image not only deconstructs Modernity’s foundational distinction between the subject and the object, it also opens up an affective connection between all subjects engaged in the act of looking; in this case, the photographer, the subjects and objects within the photograph and the viewer.From Deleuze, we know that perception is characterized by common physical responses in all subjects: the movement of the optic nerve, the dilation of the pupil, the squint of the eyelid, the craning of the neck to see up close. However small, however imperceptible, these physical sensations are all still movements; indeed, they are movements repeated by all seeing subjects. My point is that these imperceptible modes of attention are consistently engaged in the act of viewing photographs. What this suggests is that taking account of the affective level of perception changes our traditional understandings of interpretation; indeed, even if a photograph fails to move us emotionally, it certainly moves us physically, though we may not be conscious of it.Drawing from Mitchell and Deleuze, then, we can say that a photograph’s “insolent, poignant stasis” makes no sense. A photograph is constantly animated not just by the potentials inherent in its enframed subjects and objects, but more importantly, in the acts of perception undertaken by viewers. Certainly some photographs move us emotionally – to tears, to laughter, to rage – and indeed, this emotional terrain is where Barthes and Sontag offer important insights. My point is that all photographs, no matter what they depict, move us physically through the act of perception. If we take Mitchell’s question seriously and extend agency to the photograph, then it is in the affective register that we can discern a more relational encounter between subjects and objects because both are in a constant state of mobility.Ambivalence and ParalysisHow might Mitchell’s question apply to Dorsey’s photograph? What does this image want from us? What does it demand from our acts of looking? The dispersed account of agency put forward by Mitchell suggests that the act of looking can never be contained within the subject; indeed, what is produced in each act of looking is some kind of subject-object-world assemblage in which each component is characterised by its potential and actual mobilities. With respect to Dorsey’s image, then, the multiple lines of sight at work in the photograph indicate multiple – and mobile – relationalities. Primarily, there is the relationship between the viewer – any potential viewer – and the photograph. If we follow Mitchell’s line of questioning, however, we need to ask how the photograph itself shapes the emotive and affective experience of visual interpretation – how the photograph’s demand is transmitted to the viewer.Firstly, this demand is channelled through Dorsey’s line of sight that extends through his camera’s viewfinder and into the formal elements of the photograph: the focused POW in the foreground, the blurred figures in the background, the light and shade on the subjects’ clothing and skin, the battle scarred terrain, and the position of these elements within the viewfinder’s frame. As viewers we cannot see Dorsey, but his presence fills – and indeed constitutes – the photograph. Secondly, the photograph’s demand is channelled through the POW’s line of sight that extends to Dorsey (who is both photographer and marine Sergeant), and potentially through his camera to imagined viewers. It is precisely the return gaze of the POW that packs such an affective punch – not because of what it means, but rather because of how it makes us feel emotionally and physically. While a conventional account would understand this affective punch as shocking, stopping or capturing the viewer, I want to argue it does the opposite – it suddenly reveals the fizzing, vibrant mobilities that transmit the picture to us, and us to the picture.There are, I think, important lessons for us in Dorsey’s photograph. It is a powerful antecedent to Judith Butler’s exploration of the Abu Graib images, and her repetition of Sontag’s question of “whether the tortured can and do look back, and what do they see when they look at us” (966). The POW’s gaze provides an answer to the first part of this question – they certainly do look back. But as to what they see when they look back at us, that question can only be answered if we redistribute both agency and mobility into the photograph to empower and mobilize the tortured, the abject, and the objectified.That leaves us with Sontag’s much more vexing question of what we do after we look at photographs. As Butler explains, Sontag has denounced the photograph “precisely because it enrages without directing the rage, and so excites our moral sentiments at the same time that it confirms our political paralysis” (966). This sets up an important challenge for us: in refusing conventional understandings of photography as a still visual art, how can we use more dispersed accounts of agency and mobility to work through the political paralysis that Sontag identifies. AcknowledgementsPaul Dorsey’s photograph of the Japanese POW is # 80-G-475166 in the NAPU archive, and is reproduced here courtesy of the United States National Archives.ReferencesAdorno, Theodore. Prisms. 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