• Title/Summary/Keyword: shelter beds

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Transplantation of Young Fronds of Sargassum horneri for Construction of Seaweed Beds (해중림 조성을 위한 괭생이모자반(Sargassum horneri) 유체의 이식)

  • CHOI Chang Geun;KIM Hyung Geun;SOHN Chul Hyun
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.36 no.5
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    • pp.469-473
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    • 2003
  • Transplantation of Sargassum horneri to natural substrate using the rope seeding method was undertaken. Seeding of S. horneri was grown on net in an indoor tank up to 0.2-0.3 cm in frond length for 2 months, and then transplanted to an architecture tile $(10\times10\;cm)$ with underwater glue and an iron pipe. After two months, number of S. horneri on the tile decreased because of grazing by herbivores. However, S. horneri on the iron pipe grew up to 0.5-2.0 cm in frond length. After 7 months, they rapidly grew up to a frond length of 11.0-203.0 cm with a mean frond length of 122.6 cm. S. horneri grew up to a maximum frond length of 313.0 cm, and mean frond length of 228.0 cm, after 10 months. The artificial S. hornevi beds can be used to clean the seawater and also be utilized as a source of marine biomass as well as for supplying habitat, shelter and spawning beds for fish and invertebrates.

Social Geography of Homelessness in Maryland, USA (노숙자의 사회지리학적 연구 - 미국 메릴랜드주를 사례로)

  • Bae Mi-Ae
    • Journal of the Korean Geographical Society
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    • v.40 no.2 s.107
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    • pp.202-220
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    • 2005
  • The substantial economic expansion of the 1990s with the dramatic changes in the provision of welfare services in America, including welfare services for the homeless, had unexpected and differential impacts on homelessness and poverty rates across the states. This paper examines a spatial pattern and process of homelessness by counties in Maryland, USA, considering the spatial differences in the composition of financial income and expenditure with sharply different poverty situation and welfare services. This social geographical approach of homelessness in Maryland focuses on the changing personal characteristics of homeless people and the relation=hip between homelessness and poverty; homelessness and the provision of welfare services such as shelter beds and emergency food providers. It makes a conclusion that there is an uneven sociospatial patterns of homelessness, relating to diverse poverty situation and provision of welfare services for the homeless by variable welfare policy among counties, Maryland.

Selection of the Optimal Transplanting Method and Time for Restoration of Zostera marina Habitats (잘피(Zostera marina)서식지 복원을 위한 최적 이식방법 및 시기 선정에 관한 연구)

  • Park, Jung-Im;Kim, Young-Kyun;Park, Sang-Rul;Kim, Jong-Hyeob;Kim, Young-Sang;Kim, Jeong-Bae;Lee, Pil-Yong;Kang, Chang-Keun;Lee, Kun-Seop
    • ALGAE
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    • v.20 no.4
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    • pp.379-388
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    • 2005
  • Seagrass bed is an important component in coastal and estuarine ecosystems, providing food and shelter to a wide variety of fauna. Recently, seagrass coverage has declined significantly due to anthropogenic influences such as reclamation, dredging, and eutrophication and consequently, necessity of seagrass habitat restoration is rising. Transplantation experiments with Zostera marina using TERFS, staple method, and shell method have been conducted at Dadae Bay, Kosung Bay and Jindong Bay on the south coast of Korea to select an optimal transplanting method for restoration of Z. marina habitat. Three experimental sites located at the vicinity of natural Z. marina beds with an average water depth of about 4m. Z. marina plants, which were collected from donor bed in Koje Bay were also transplanted at 7 different time from October 2003 to July 2004 to find appropriate transplanting time. Density of Z. marina was monitored monthly at both transplanted areas and natural beds. Transplantation using the staple method showed the highest survival rate of transplant. Shell method was also an effective transplanting method at muddy areas in Kosung Bay and Jindong Bay, but not suitable at sandy areas in Dadae Bay. These results suggest that sediment composition of transplanting areas should be considered for the selection of the optimal transplanting method. Z. marina transplanted during fall usually showed the highest survival rate, while most Z. marina plants transplanted in summer died due to high lethal temperature during this period.