• 제목/요약/키워드: Insect biodiversity

검색결과 77건 처리시간 0.027초

Insect natural enemies as bioindicators in rice paddies

  • Ueno, Takatoshi
    • 농업과학연구
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    • 제39권4호
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    • pp.545-553
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    • 2012
  • In Asia, including Japan and Korea, rice paddies occupy the largest cultivated area in agricultural land. Rice paddies provide the habitats for many organisms including endemic species, sustaining high biodiversity. Insect natural enemies inhabiting rice paddies have an important function for rice production as agents of 'ecosystem services' because they play a major role in suppressing rice pests. The diversity and abundance of natural enemies can be a good index reflecting the 'healthiness' of agro-ecosystem services in rice paddies. The present study investigates whether insect natural enemies could be good biological indicators for general arthropod biodiversity and agricultural practice. First, the concept of ideal bio-indicators was summarized. The strategy to explore and select such bio-indicators was then proposed. Lastly, field survey was made to evaluate the abundance and biodiversity of natural enemies in Japanese rice paddies where chemical inputs, i.e., insecticide use, were different. The results showed that reduction of chemical inputs led to an increase in species richness or diversity of natural enemies including parasitoids and predators. Then, the data were analyzed to examine suitable indicator species to assess environmental soundness of agricultural practice and biodiversity in rice paddies. The density of several species of natural enemies did respond both to pesticide use and to general arthropod biodiversity. The analyses thus have indicated that natural enemies can be suitable as bio-indicators. Usefulness of indicator species in rice paddies is discussed in the context of ecologically sound agriculture.

Forest Insect Industry in Collaborative Forest Management: An Overview

  • Bhatia, Narendra Kumar;Yousuf, Mohammad
    • International Journal of Industrial Entomology and Biomaterials
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    • 제27권1호
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    • pp.166-179
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    • 2013
  • In India, forest based insect enterprises has never been linked up with any forest management activity, either as a forest conservation strategy or to reduce the poverty in forested area. This investigation indicated that when forest dependent people are associated with forest insect industry (FII) like forest sericulture, lac culture or apiculture; this income generating activity links livelihood with forest conservation, and generates a viable model of collaborative forest management (CFM). In this model different stakeholders work together as a coherent entity for unified goal of managing the forest for well-being of the poor people in fringe areas. Article summaries and evaluates the prospect of India specific forest insect industry, and discusses how and to what extent integration of FII could be a viable livelihood component in CFM to conserve the forest and insect biodiversity. We analysed a case study on forestbased rearing of tropical tasar silkworm rearing in Central India from CFM perspective. Arguments in this communication are intended to provide forest managers and policy-makers with necessary input to consider location specific FII in CFM mode to provide a continuous source of small income to forest dependent people to ensure long lasting success of their forest management endeavours.

Two New Records of Scleroderma Species (Sclerodermataceae, Boletales) in South Korea

  • Sung-Eun Cho;Young-Nam Kwag;Sang-Kuk Han;Dong-Hyeon Lee;Chang Sun Kim
    • 한국균학회지
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    • 제50권2호
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    • pp.115-123
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    • 2022
  • Two new records of Scleroderma species from South Korea are described here. Comprehensive taxonomic studies of Scleroderma specimens were conducted at the Korea National Arboretum. Based on morphological and molecular data (fungal barcode sequences), two new records (S. laeve and S. nastii) were confirmed. Herein, morphological descriptions, including Scanning Electron Microscope (SEM) images of basidiospore ornamentation, and a taxonomic key of Korean Scleroderma species are provided.

생태관광을 위한 곤충상 조사와 곤충 생태원의 역할 (Survey on Insect Fauna and Role of Insect Gardens for Ecotourism)

  • 최영철;김종길;최지영;김원태;박해철;황석조;정길상
    • 한국응용곤충학회지
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    • 제48권4호
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    • pp.453-457
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    • 2009
  • 본 연구는 2005년부터 2007년까지 수원, 영양, 부여와 예천의 곤충 생태원 부지에서 곤충강의 다양성을 조사하였다. 월별 곤충 개체군 크기는 6월부터 8월에 네 조사구역 모두에서 가장 컸다. 전체적으로 딱정벌레목의 곤충이 가장 많이 채집되었으며, 노린재목과 메뚜기목의 곤충이 뒤를 이었다. 각 곤충생태원은 지리적 특색에 맞는 고유한 교육프로그램을 운영하고 있었다. 이러한 연구와 생태원의 활동은 그 지역의 곤충과 같은 생물의 다양성을 보존하고 관람객에게 인식시키는데 중요한 역할을 할 것이다.

Analysis of Seven Islands with Insect Fauna and Vascular Plant Flora in Gogunsan Archipelago, Korea

  • Hwang, Jeong Ho;Yim, Mean-Young;An, Seung-Lak;Paek, Woon-Kee;Lee, Wang-Hee
    • Proceedings of the National Institute of Ecology of the Republic of Korea
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    • 제3권1호
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    • pp.23-31
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    • 2022
  • The analysis of seven islands in Gogunsan archipelago, Korea with insect fauna and vascular plant flora was carried out based on a field survey conducted in May, July, and September. As a result, a total of 2,817 insect individuals including 264 species and 315 taxa of vascular plant were recorded. Bangchukdo the largest island among the seven islands showed the largest number both insect species and plant taxa. The similarity analysis suggested that the nearness of each island strongly affected the insect fauna and vascular plant flora on each island. In addition, there was significant correlation between the areas of each island and the numbers of insect species (Spearman's correlation coefficient=0.857, P-value=0.014). In the future, the results of this study can be used as data related to island ecology and conservation.

곤충류 종다양성을 고려한 농경지 보전가치평가 (Conservation Value Assessment in Agricultural Area Considering Biodiversity of Insect)

  • 김은영;송원경;전성우;한용구
    • 한국환경복원기술학회지
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    • 제16권5호
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    • pp.39-47
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    • 2013
  • The agricultural area is a priority to develop than the natural area for land developments. However, the importance of agricultural biodiversity is emphasized recently. The agricultural area does not only provide food for human and habitat for wild life but also contribute to improve biodiversity. It is necessary to preserve the agricultural area with rich biodiversity. The study was conducted to analyze biodiversity of insects for conservation value assessment of agricultural areas. According to the results of field survey, there is higher biodiversity index in agricultural areas surrounding the forest or small size agricultural areas. By contrast, the index is lower in agricultural areas near roads or in the intensive agricultural area. The results show that there is high biodiversity in agricultural areas, especially margin agricultural area such as below 2ha and over slop rate of 15%. Therefore, further studies should be conducted field survey more to generalize for biodiversity in agricultural area, and establish the criteria to protect agricultural area from land developments.

Lepidopterous Insects Composition in Jindo Island, Korea in Summer

  • Lee, Hyung-Keun;Kim, Do-Sung;Jeon, Yong Lak;Yoon, Hee-Nam;Lee, Jung-Hyo;Park, Seong-Joon
    • Animal Systematics, Evolution and Diversity
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    • nspc9호
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    • pp.51-72
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    • 2016
  • We surveyed the biodiversity of lepidopterous insects in Jindo Island using UV bucket trap in July 2016 to determine the relationship between surrounding environment and ecosystem in order to contribute to biodiversity conservation and management of coastal islands in Korea. Based on our survey results, a total of 262 lepidopterous insect species in 16 families were collected from Jindo Island. Members belonging to families Noctuidae and Geometridae made up approximately half of the total species (86 species [32.82%] in Noctuidae and 44 species [16.79] in Geometridae). There were 29 species (11.07%) belonging to Crambidae and 28 species (10.69%) belonging to Pyralidae. As a result of all collections based on previous literature and this study, a total of 730 species belonging to 34 families were collected from Jindo Island, including 33 protected species, 242 species (33.15%) belonging to Noctuidae (the most abundant), 124 species (16.99%) belonging to Geometridae, 79 species (10.82%) belonging to Crambidae, and 65 species (8.90%) belonging to Pyralidae. The most frequently collected species was Lamoria glaucalis in this syudy. Our results on the diversity of lepidopterous insects will provide basic information for future investigation on diverse changes in the ecosystem of Jindo Island, Korea.