Institutional and policy issues in the management of fisheries and coastal resources in Cambodia

Fishery management, Governments, Fishery policies, Resource conservation, Resource management, Cambodia,

Residential patterning at Angkor Wat

17 pages. Copyright © Antiquity Publications Ltd, 2015. First published on December 7th, 2015 at doi.org/10.15184/aqy.2015.159Considerable attention has been devoted to the architecture and art history of Cambodia's Angkor Wat temple in the last century. There has, however, been little research on the functions and internal organisation of the large rectangular enclosure surrounding the temple. Such enclosures have long been assumed to have been sacred precincts, or perhaps ‘temple-cities’: work exploring the archaeological patterning for habitation within them has been limited. The results of LiDAR survey and excavation have now revealed evidence for low-density residential occupation in these areas, possibly for those servicing the temple. Recent excavations within the enclosure challenge our traditional understanding of the social hierarchy of the Angkor Wat community and show that the temple precinct, bounded by moat and wall, may not have been exclusively the preserve of the wealthy or the priestly elite.Gracious thanks are extended to the APSARA Authority for permission to undertake field investigations in the Angkor Wat enclosure, including HE Bun Narith, HE Ros Borath and An Sopheap, which were undertaken under ARC grant DP1092663. We thank So Malay and Martin King for administrative support, and GAP 2010 and 2013 crew members, whose labour produced this research. Damian Evans drafted Figures 1–5. Martin King and Alex Morrison provided additional graphical expertise; conversations with Christophe Pottier, Roland Fletcher, Ea Darith, Ian Lowman, David Brotherson and Paul Lavy were exceptionally helpful. Thanks also to Li Baoping, John Miksic and Louise Cort for identifications of Chinese tradewares in the 2010 excavated materials. We thank the PT McElhanney, Indonesia, company for its contribution to the LiDAR acquisition, which was funded by eight institutions in the Khmer Archaeology LiDAR Consortium: APSARA Authority, the University of Sydney, l’Ecole francaise d’Extreme-Orient, Societe Concessionaire d’Aeroport, the Hungarian Southeast Asian Research Institute, Japan- PSARA Safeguarding Angkor, the Archaeology and Development Foundation and the World Monuments Fund. All mistakes are the responsibility of the principal author

Prasat and Pteah: Habitation within Angkor Wat's temple enclosure

11 pages. First published in "Archaeological Research in Asia" by Elsevier: Carter, A. K., Stark, M. T., Castillo, C. C., Heng, P., Zhuang, Y., & Chhay, R. (2022). Prasat and pteah: Habitation within Angkor Wat's temple enclosure. Archaeological Research in Asia, 32, 100405. https://doi.org/10.1016/j.ara.2022.100405The Angkor empire (9-15th centuries CE) was one of mainland Southeast Asia's major civilizations, with a 3000 km2 agro-urban capital located in northwest Cambodia. Since 2010, the Greater Angkor Project has been investigating occupation areas within Angkor's urban core. This work has identified temple enclosures as important residential areas that made up part of Angkor's civic-ceremonial center. In this paper, we review excavations from residential areas within Angkor Wat's temple enclosure. We concentrate on evidence for residential patterning by focusing on our 2015 excavations, one of the largest horizontal excavations of a single occupation mound within Angkor's civic-ceremonial center. These data offer further evidence for archaeological patterns of residential occupation within the Angkor Wat temple enclosure and a comparative dataset for future research of habitation areas within Angkor as well as domestic spaces in other urban settings.The authors wish to thank the APSARA Authority for permission to undertake excavations at Angkor Wat and their cooperation and collaboration in undertaking this research. We also thank Dr. Roland Fletcher for his guidance and support of our project. We extend our deepest gratitude to So Malay and Martin King for administrative support and the University of Sydney Robert Christie Research Centre. Thanks also go to Alyssa Loyless for help with Fig. 2. This work would not have been possible without efforts from the 2010, 2013, and 2015 field crews. This work was supported by the Australian Research Council under Grant DP1092663; National Geographic Society Committee for Research and Exploration under Grant 9602–14; and Dumbarton Oaks under a Project Grant in Garden and Landscape Studies

The evolution of agro-urbanism: A case study from Angkor, Cambodia

16 pages. Published in "Journal of Anthropological Archaeology" by Elsevier: A.K. Carter, S. Klassen, M.T. Stark, M. Polkinghorne, P. Heng, D.H. Evans, R. Chhay; The evolution of agro-urbanism: a case study from Angkor, Cambodia; J. Anthropol. Archaeol., 63 (2021), Article 101323The vast agro-urban settlements that developed in the humid tropics of Mesoamerica and Asia contained both elite civic-ceremonial spaces and sprawling metropolitan areas. Recent studies have suggested that both local autonomy and elite policies facilitated the development of these settlements; however, studies have been limited by a lack of detail in considering how, when, and why these factors contributed to the evolution of these sites. In this paper, we use a fine-grained diachronic analysis of Angkor’s landscape to identify both the state-level policies and infrastructure and bottom-up organization that spurred the growth of Angkor as the world’s most extensive pre-industrial settlement complex. This degree of diachronic detail is unique for the ancient world. We observe that Angkor’s low-density metropolitan area and higher-density civic-ceremonial center grew at different rates and independently of one another. While local historical factors contributed to these developments, we argue that future comparative studies might identify similar patterns.The Authors thank the APSARA National Authority for their permission to conduct remote sensing and field investigations. Thanks also to Roland Fletcher for his support. Thank you to Terry and Eileen Lustig for their comments and suggestions on aspects of economic geography and Michael E. Smith for reading and offering comments on an earlier draft of this paper. Thanks to Malay So and Maryne Dana for administrative support. Research, planning, and writing of this manuscript was undertaken with the support of the University of Oregon Global Oregon Faculty Collaboration Fund supported by the Global Studies Institute in the UO Office of International Affairs. Data collection for parts of the research in this study have been funded by: the National Geographic Society Committee for Research and Exploration under Grant 9602-14; Dumbarton Oaks under a Project Grant in Garden and Landscape Studies; the Social Sciences and Humanities Research Council of Canada Postdoctoral Fellowship; the National Science Foundation Doctoral Dissertation Research Improvement Awards (#1638137); Australian Research Council Discovery Early Career Researcher Award (DE150100756) and Council Discovery Grant (DP170102574); and the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreements 639828 and 866454)

Geometric numerical schemes for the KdV equation

Geometric discretizations that preserve certain Hamiltonian structures at the discrete level has been proven to enhance the accuracy of numerical schemes. In particular, numerous symplectic and multi-symplectic schemes have been proposed to solve numerically the celebrated Korteweg-de Vries (KdV) equation. In this work, we show that geometrical schemes are as much robust and accurate as Fourier-type pseudo-spectral methods for computing the long-time KdV dynamics, and thus more suitable to model complex nonlinear wave phenomena.Comment: 22 pages, 14 figures, 74 references. Other author's papers can be downloaded at http://www.lama.univ-savoie.fr/~dutykh

Effect of sun-dried and fresh cassava leaves on growth of Tilapia (Oreochromis niloticus) fish fed basal diets of rice bran or rice bran mixed with cassava root meal

The growth response of Tilapia fish (Oreochromis niloticus) to supplementation with fresh or dried leaves of a sweet variety of cassava was studied in 1 m deep ponds (each 4 m * 2.5 m * 1 m). Rice bran or rice bran mixed with cassava root meal was provided as the energy source (20-24% of feed DM), the mixed feed being given at the rate of 5% of fish LW. There were 30 fish per pond with average initial weight of 6 g per head. The treatments were arranged as a 2*2 factorial in a Completely Randomized Design (CRD) with 4 replicates. The first factor was cassava leaf processing (sun-dried or fresh); the second factor was energy source (rice bran or rice bran mixed with cassava root meal). The cassava leaves and roots were from a local “sweet” variety traditionally planted by farmers for human consumption. The experiment was conducted for 100 days. Daily gain in weight and length, and the ratio weight: length after 100 days of growth, did not differ among treatments. All the fish survived and there was no evidence of HCN toxicity. Water quality parameters were not affected by the treatments. There were no interactions between sources of protein and of energy. It is concluded that the feeding of cassava leaves with rice bran can be readily adopted by small scale farmers as both these feed resources are readily available in rural areas

Forage options to sustainably intensify smallholder farming systems on tropical sandy soils. A review

Intensifying livestock production by integrating perennial forages has great potential to contribute to sustainable development and livelihoods in the Mekong region. However, the approach taken must be informed by the environmental, social, and cultural context of the region. Accordingly, we review published research papers and reports from relevant research for development projects to identify options for sustainably integrating forages into farming systems, with a focus on sand-dominant soils of southern Laos and Cambodia. First, we examine existing livestock management practices to determine the compatibility of forages as an option to intensify livestock production. Second, we review the environmental properties of rainfed lowland rice systems with sandy soils and their implications for forage growing. Third, we identify and compare the suitability of existing forage genetics that is adapted to these environmental properties. Fourth, we propose adapted varieties, outline appropriate management options, and discuss the sustainable engagement of smallholders in the production of forages. The key findings are as follows: (1) Forages appear compatible with the sociocultural properties of smallholder farming systems in southern Laos and Cambodia because there is an awareness of existing limitations to livestock production, widespread desire to possess livestock for cultural reasons, and mounting pressure to improve the productivity of grazing areas and the efficiency of labor. (2) The limiting properties of the environment are drought, soil acidity, flooding, and soil infertility, which must be addressed in the selection and management of forage genetics. (3) Broadly adapted perennial tropical grasses and herbaceous legumes exist, but these are unlikely to thrive in lowland ecosystems of southern Laos and Cambodia that are prone to both annual flooding and drought. (4) Variations in surface hydrology at the farm scale often result in differentiated environments suitable for differing varieties. Brachiaria sp. hybrid “Mulato II,” Panicum maximum, and Stylosanthes guianensis are recommended for drought-prone, acidic sands that are safe from prolonged submergence and would require the least additional management, whilst Paspalum atratum is recommended for low-lying areas with access to irrigation. (5) The transition to perennial forage integration appears to be accessible to farmers and can allow them to rapidly accumulate benefits in terms of saved labor; however, efforts to intensify animal production have been slow and must contend with multiple challenges: poor understanding of animal husbandry and health, cultural views relating to the role of animals in production systems, and poor access to forage and livestock services. These must all be addressed if sustainably intensified animal production is to be achieved in these and similar regions