{"id":16,"date":"2018-03-27T15:49:42","date_gmt":"2018-03-27T06:49:42","guid":{"rendered":"http:\/\/home.hiroshima-u.ac.jp\/hosaka3\/?page_id=16"},"modified":"2021-10-14T19:15:23","modified_gmt":"2021-10-14T10:15:23","slug":"%e7%a0%94%e7%a9%b6%e3%83%86%e3%83%bc%e3%83%9e-research-interests","status":"publish","type":"page","link":"https:\/\/home.hiroshima-u.ac.jp\/hosaka3\/%e7%a0%94%e7%a9%b6%e3%83%86%e3%83%bc%e3%83%9e-research-interests\/","title":{"rendered":"Research"},"content":{"rendered":"

\uff11\uff0e \u690d\u7269\uff0d\u6606\u866b\u76f8\u4e92\u4f5c\u7528
\nPlant-insect interactions<\/p>\n

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Various fruits found in a “General Flowering” event at Pasoh, Malaysia<\/p><\/div>\n

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A weevil feeding on dipterocarp seed<\/p><\/div>\n

\u6606\u866b\u306f\u5168\u751f\u7269\u7a2e\u306e\u534a\u5206\u4ee5\u4e0a\u3092\u5360\u3081\u3001\u7a2e\u6570\u3067\u3082\u73fe\u5b58\u91cf\u3067\u3082\u5730\u7403\u4e0a\u3067\u5727\u5012\u7684\u306b\u7e41\u6804\u3057\u3066\u3044\u308b\u30b0\u30eb\u30fc\u30d7\u3067\u3059\u3002\u7279\u306b\u3001\u71b1\u5e2f\u6797\u306f\u6606\u866b\u306e\u591a\u69d8\u6027\u306e\u5b9d\u5eab\u3067\u3042\u308a\u3001\u305d\u3053\u3067\u6606\u866b\u306f\u690d\u7269\u306e\u7e41\u6b96\u3084\u751f\u5b58\u3001\u990a\u5206\u306e\u5faa\u74b0\u306a\u3069\u68ee\u6797\u306e\u7dad\u6301\u306b\u95a2\u308f\u308b\u91cd\u8981\u306a\u5f79\u5272\u3092\u62c5\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u3063\u3066\u304d\u3066\u3044\u307e\u3059\u3002\u5f53\u7814\u7a76\u5ba4\u3067\u306f\u3001\u30de\u30ec\u30fc\u30b7\u30a2\u3084\u30b7\u30f3\u30ac\u30dd\u30fc\u30eb\u306a\u3069\u306e\u71b1\u5e2f\u96e8\u6797\u306e\u7a2e\u5b50\u98df\u6027\u6606\u866b\u306b\u7740\u76ee\u3057\u3001\u305d\u308c\u3089\u304c\u690d\u7269\u306e\u958b\u82b1\u30fb\u7d50\u5b9f\u30d5\u30a7\u30ce\u30ed\u30b8\u30fc\u3084\u7a2e\u591a\u69d8\u6027\u306e\u9032\u5316\u306b\u53ca\u307c\u3057\u305f\u5f71\u97ff\u306b\u3064\u3044\u3066\u7814\u7a76\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002
\nInsects occupy more than half of global biodiversity, overwhelming other taxonomic groups both in terms of number of species and biomass. In particular, insects are diverse in tropical forests and play a key role for maintaining the ecosystems by affecting reproduction and survivorship of plants and nutrient cycling. We are conducting researches on seed predators in tropical rainforests in Malaysia and Singapore to understand their importance as driving factors for evolution of flowering\/fruiting phenology and species diversity of plants.<\/p>\n

Hosaka et al. (2009) J Trop Ecol 25:625-636<\/em>
\nHosaka et al. (2011) J Trop Ecol 27:651-655<\/em>
\nHosaka et al. (2017) Biotropica 49:177-185<\/em>, etc.<\/p>\n

\uff12\uff0e \u6797\u51a0\u306e\u751f\u7269\u591a\u69d8\u6027
\nBiodiversity at forest canopies<\/p>\n

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Canopy tower system at Pasoh, Malaysia<\/p><\/div>\n

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Survey on galling insects at tree crown 40 m above the ground<\/p><\/div>\n

\u6a39\u6728\u306e\u8449\u3084\u82b1\u304c\u751f\u3044\u8302\u308b\u71b1\u5e2f\u6797\u306e\u6797\u51a0\u90e8\u306f\u3001\u5730\u4e0a30-50m\u3068\u3044\u3046\u9ad8\u3055\u304c\u9577\u5e74\u7814\u7a76\u8005\u306e\u30a2\u30af\u30bb\u30b9\u3092\u963b\u3093\u3067\u304d\u305f\u305f\u3081\u3001\u6df1\u6d77\u3068\u4e26\u3076\u751f\u614b\u5b66\u7684\u30d5\u30ed\u30f3\u30c6\u30a3\u30a2\u3068\u547c\u3070\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u8fd1\u5e74\u3001\u6797\u51a0\u90e8\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306e\u30bf\u30ef\u30fc\u3084\u30af\u30ec\u30fc\u30f3\u304c\u71b1\u5e2f\u6797\u306e\u591a\u304f\u306e\u30b5\u30a4\u30c8\u3067\u6574\u5099\u3055\u308c\u305f\u308a\u3001\u30ed\u30fc\u30d7\u30af\u30e9\u30a4\u30df\u30f3\u30b0\u306a\u3069\u306e\u6bd4\u8f03\u7684\u7c21\u4fbf\u306a\u6728\u767b\u308a\u6280\u8853\u304c\u666e\u53ca\u3057\u305f\u308a\u3057\u305f\u3053\u3068\u306b\u3088\u308a\u3001\u6797\u51a0\u90e8\u306e\u7814\u7a76\u3082\u624b\u306e\u5c4a\u304b\u306a\u3044\u3082\u306e\u3067\u306f\u306a\u304f\u306a\u3063\u3066\u304d\u307e\u3057\u305f\u3002\u79c1\u9054\u306f\u71b1\u5e2f\u96e8\u6797\u306e\u6797\u51a0\u90e8\u306b\u304a\u3051\u308b\u30b4\u30fc\u30eb\uff08\u866b\u3053\u3076\uff09\u5f62\u6210\u6606\u866b\u306e\u591a\u69d8\u6027\u306e\u8abf\u67fb\u306a\u3069\u3001\u6797\u51a0\u90e8\u306e\u751f\u7269\u591a\u69d8\u6027\u89e3\u660e\u306b\u5411\u3051\u305f\u7814\u7a76\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002
\nTropical rainforest canopies, where leaves and flowers are most abundant, had been poorly studied due to its extreme height, often 30-50 m above ground, and called as an ecological frontier like deep sea. Recently, however, canopies have become more accessible due to construction of tower and crane at many study sites and spread of\u3000tree climbing techniques. We are conducting studies to reveal diversity of insects (such as galling insects) at forest canopies.<\/p>\n

Takagi et al. (2005) Insecta Matsumurana New Series 62:123-151<\/em>
\nHosaka et al. (2009) Tropics 18:93-102<\/em>, etc.<\/p>\n

\uff13\uff0e \u68ee\u6797\u7ba1\u7406\u3068\u751f\u7269\u591a\u69d8\u6027
\nForest management and biodiversity<\/p>\n

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Logged forest at Temengor, Malaysia<\/p><\/div>\n

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A dung beetle rolling dung ball<\/p><\/div>\n

\u4e16\u754c\u4e2d\u306e\u68ee\u6797\u306e\u5927\u90e8\u5206\u304c\u4fdd\u8b77\u6797\u3067\u306f\u306a\u304f\u6728\u6750\u751f\u7523\u3092\u76ee\u7684\u3068\u3057\u305f\u751f\u7523\u6797\u3068\u3057\u3066\u7ba1\u7406\u3055\u308c\u3066\u3044\u308b\u73fe\u5728\u3001\u751f\u7269\u591a\u69d8\u6027\u306e\u4fdd\u5168\u3092\u52b9\u679c\u7684\u306b\u884c\u3046\u305f\u3081\u306b\u306f\u3001\u751f\u7523\u6797\u306b\u304a\u3044\u3066\u3082\u751f\u7269\u591a\u69d8\u6027\u306b\u914d\u616e\u3057\u305f\u68ee\u6797\u7ba1\u7406\u304c\u6c42\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u79c1\u9054\u306f\u3001\u6301\u7d9a\u7684\u306a\u68ee\u6797\u7ba1\u7406\u306b\u5411\u3051\u3066\uff0c\u6728\u6750\u4f10\u63a1\u3084\u305d\u308c\u306b\u4f34\u3046\u6797\u9053\u5efa\u8a2d\u304c\u30d5\u30f3\u866b\u3084\u5c0f\u578b\u54fa\u4e73\u985e\u306a\u3069\u306e\u751f\u7269\u591a\u69d8\u6027\u3084\u751f\u614b\u7cfb\u6a5f\u80fd\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u3084\u305d\u306e\u6539\u5584\u6cd5\u306b\u95a2\u3057\u3066\u7814\u7a76\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002
\nBecause majority of tropical forests are managed not for protection but for timber production, biodiversity should be taken into consideration in managements of these production forests to conserve global biodiversity effectively. We are conducting studies on how timber logging and associated forest-road construction affect biodiversity (such as dung beetles and small mammals) and ecosystem functions of tropical forests, and how we can mitigate the negative impacts, toward sustainable forest management.<\/p>\n

Hosaka et al. (2014) For Ecol Manage 326:18-24<\/em>
\nHosaka et al. (2014) Biotropica 46:720-731<\/em>
\nYamada et al. (2016) Biol Conserv 194:100-104<\/em>, etc.<\/p>\n

\uff14\uff0e \u4eba\u9593\u2015\u81ea\u7136\u76f8\u4e92\u4f5c\u7528\uff1a\u751f\u7269\u591a\u69d8\u6027\u3084\u81ea\u7136\u666f\u89b3\u306b\u5bfe\u3059\u308b\u4eba\u3005\u306e\u610f\u8b58\uff0c\u4eba\u9593\u3068\u91ce\u751f\u751f\u7269\u306e\u8ecb\u8f62\uff0c\u81ea\u7136\u30c4\u30fc\u30ea\u30ba\u30e0
\nHuman-nature interaction: People\u2019s perception toward biodiversity and landscape, Human-wildlife conflict, Nature-based tourism<\/p>\n

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Sign board to avoid human-macaque conflict at Bukit Timah National Park, Singapore<\/p><\/div>\n

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Tourism development at Kuranda tropical rainforest, Australia<\/p><\/div>\n

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\nNature conservation would be ultimately depending on people\u2019s value for nature and willingness for conservation. Therefore, understanding people\u2019s attitudes and perception toward nature is critically important for effective conservation planning. In particular, human-wildlife conflicts can often be an obstacle to conservation. We are conducting studies on people\u2019s perception toward biodiversity and natural landscape and factors affecting the perception in tropical countries. We are also conducting studies on sustainable nature-based tourism as a tool for balancing human activities and ecosystem conservation.<\/p>\n

Hosaka et al. (2016) Sci Rep 6:30911<\/em>
\nHosaka et al. (2016) Amer Entomol 62:228-234<\/em>
\nHosaka et al. (2017) Plos One 12: e0175243<\/em>
\nHosaka et al. (2018) Landsc Urban Plan 180:1-4<\/em>, etc.<\/p>\n

\uff15\uff0e \u90fd\u5e02\u306e\u751f\u7269\u591a\u69d8\u6027\u3068\u305d\u306e\u4fdd\u5168
\nUrban biodiversity and its conservation<\/p>\n

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View of Kuala Lumpur city, Malaysia<\/p><\/div>\n

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\n\u201cNature\u201d are not necessarily located in remote areas. We can also find various types of \u201cnature\u201d in suburban and urban areas. Today, urban areas are expanding and urban population is increasing rapidly worldwide, and in particular, developing countries which holds majority of tropical forests. Therefore, we conduct studies on how urbanization affects biodiversity and human-nature interactions.<\/p>\n

Azmy et al. (2016) Urban For Urban Gree 18:117-125<\/em>
\nHosaka et al. (2017) Palgrave Comm 3:17071<\/em>
\nMuslim et al. (2018) Ecol Process 7:18<\/em>, etc<\/p>\n","protected":false},"excerpt":{"rendered":"

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