Browsing by Author "Kuo, Yi-Yu"

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Eco-Environmental Impact Assessment of Pre-Leisure Beach Nourishment on the Benthic Invertebrate Community at Anping Coast
(2011-01-01)
Shih, Chun-Han
;
Kuo, Yi-Yu
;
Chu, Ta-Jen
;
Chou, Wen-Chieh
;
Chang, Wei-Tse
In recent years, owing to global warming and the rising sea levels, beach nourishment and groin building have been increasingly employed to protect coastal land from shoreline erosion. These actions may degrade beach habitats and reduce biomass and invertebrate density at sites where they were employed. We conducted an eco-environmental evaluation at the Anping artificial beach-nourishment project area. At this site, sand piles within a semi-enclosed spur groin have been enforced by use of eco-engineering concepts since 2003. Four sampling sites were monitored during the study period from July 2002 to September 2008. The environmental impact assessment and biological investigations that we conducted are presented here. The results from this study indicate that both biotic (number of species, number of individual organisms, and Shannon-Wiener diversity) and abiotic parameters (suspended solids, biological oxygen demand, chemical oxygen demand, dissolved inorganic nitrogen, dissolved inorganic phosphorus, total phosphorus, total organic carbon, median diameter, and water content) showed significant differences before and after beach engineering construction. Biological conditions became worse in the beginning stages of the engineering but improved after the restoration work completion. This study reveals that the composition of benthic invertebrates changed over the study period, and two groups of organisms, Bivalvia and Gastropoda, seemed to be particularly suitable to this habitat after the semi-enclosed artificial structures completion.
Eco-Environmental Impact Assessment of Pre-Leisure Beach Nourishment on the Benthic Invertebrate Community at Anping Coast
(2011-01-01)
Shih, Chun-Han
;
Kuo, Yi-Yu
;
Chu, Ta-Jen
;
Chou, Wen-Chieh
;
Chang, Wei-Tse
In recent years, owing to global warming and the rising sea levels, beach nourishment and groin building have been increasingly employed to protect coastal land from shoreline erosion. These actions may degrade beach habitats and reduce biomass and invertebrate density at sites where they were employed. We conducted an eco-environmental evaluation at the Anping artificial beach-nourishment project area. At this site, sand piles within a semi-enclosed spur groin have been enforced by use of eco-engineering concepts since 2003. Four sampling sites were monitored during the study period from July 2002 to September 2008. The environmental impact assessment and biological investigations that we conducted are presented here. The results from this study indicate that both biotic (number of species, number of individual organisms, and Shannon-Wiener diversity) and abiotic parameters (suspended solids, biological oxygen demand, chemical oxygen demand, dissolved inorganic nitrogen, dissolved inorganic phosphorus, total phosphorus, total organic carbon, median diameter, and water content) showed significant differences before and after beach engineering construction. Biological conditions became worse in the beginning stages of the engineering but improved after the restoration work completion. This study reveals that the composition of benthic invertebrates changed over the study period, and two groups of organisms, Bivalvia and Gastropoda, seemed to be particularly suitable to this habitat after the semi-enclosed artificial structures completion.
Identifying Indicator Species in Habitats Created by Coastal Structures
(2010)
Kuo, Yi-Yu
;
Shih, Chun-Han
;
Lee, Ying-Chou
;
Chang, Wei-Tse
;
Chu, Ta-Jen
In this paper, three approachs were developed to find indicator species from the habitat created by coastal structures. These approachs consist of a model of species co-occurrence probability, a model of k-environmental factor probability and a composite model. Simultaneously, a case study was conducted in Hsinchu Fishing Port of north-western Taiwan. Based on the aforementioned models, three primary producer species, Ahnfeltiopsis flabelliformis, Chondrus ocellatus and Sarcodia montagneana, were chosen as the indicator species which had the highest co-occurrence probabilities and showed greater tolerance to more critical environment. It is imperative to understand how the three species under particular co-occurring conditions and environmental factors influence the composition of sessile assemblages in coastal water. The results indicate that for the purpose of increasing biodiversity, these models are feasible to find indicator species of artificial structures, and to help make it possible to design coastal structures based on biological considerations. This study provides an innovative approach for further advanced application in the artificial habitat of coast management.
海岸生態棲地評估技術研究(2/2)
(2010)
郭一羽
;
Kuo, Yi-Yu
;
國立交通大學土木工程學系
本計畫主要就海岸棲地評估技術進行研究，以保全多樣性海岸棲地環境。藉由探討臺灣海岸生態環境特性，將臺灣地區海岸棲地類型屬性予以分類，並建立各類生態棲地評估步驟、內容、方法及指標。本計畫預計分2年度執行，第1年度工作主要為彙整國內外相關海岸棲地評估技術，建立適用於臺灣海岸防護規劃之棲地評估技術。第2年度工作著重於利用第1年海岸棲地評估技術研擬成果進行示範區驗證及彙編「海岸生態棲地評估作業手冊」。並進行棲地評估技術研擬成果驗證。期能建構一套完整海岸生態棲地評估作業方式，以利從事海岸防護規劃時，除達成安全防護目標外，亦能兼顧海岸生態環境保育，使整體海岸環境永續發展。第2年項目為延續第一年的計畫目標，利用海岸生態棲地評估技術研擬成果選擇屏東海岸示範區驗證，並且透過示範區的調查項目與分析方法進行實地採樣調查作業，施作必要之生物統計與生態分析。本計畫棲地調查與分析過程將探討未來應用上會遭遇的問題與改善方案，若應用上仍有所缺失則就評估結果則提出相關改善策略、監測計畫及回饋機制。最後研擬之相關海岸生態棲地評估技術彙整成「海岸生態棲地評估作業手冊」，並針對手冊中的缺點與遺漏進行調整與改善，供以後海岸防護工程規劃時參考。