A5056171108- Ecology and Vegetation Dynamics Studies
- Animal Ecology and Behavior Studies
- Isotope Analysis in Ecology
- Pacific and Southeast Asian Studies
- Ecology and Conservation Studies
- Synthesis and Properties of Aromatic Compounds
- Wildlife Ecology and Conservation
- Coastal wetland ecosystem dynamics
- Geology and Paleoclimatology Research
- Plant Diversity and Evolution
- Biological Control of Invasive Species
- Inorganic and Organometallic Chemistry
- Forest ecology and management
- Chemical Reaction Mechanisms
- Bioactive Compounds and Antitumor Agents
- DNA and Nucleic Acid Chemistry
- Rangeland and Wildlife Management
- Porphyrin and Phthalocyanine Chemistry
- Plant responses to water stress
- Synthesis and characterization of novel inorganic/organometallic compounds
- Food Industry and Aquatic Biology
- Cassava research and cyanide
- Oxidative Organic Chemistry Reactions
- Ecosystem dynamics and resilience
- Organic Chemistry Cycloaddition Reactions
Tokyo Metropolitan University
2011-2024
Nihon University
2018-2024
National Fisheries University
2009
The University of Sydney
1990
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 402:233-238 (2010) - DOI: https://doi.org/10.3354/meps08448 Japanese eel Anguilla japonica do not assimilate nutrition during oceanic spawning migration: evidence from stable isotope analysis Seinen Chow1,*, Hiroaki Kurogi1, Satoshi Katayama1, Daisuke Ambe2, Makoto Okazaki2, Tomowo Watanabe2, Tadafumi...
AbstractWe investigated the effects of accumulation litter an alien tree, Casuarina equisetifolia, on initial establishment Schima mertensiana, a tree native to Ogasawara (Bonin) Islands, in northwestern Pacific Ocean, field and greenhouse experiments. The experiment compared emergence seedlings forests dominated by C. equisetifolia with those forests, without removal. seedling germination biomass among 12 treatments that included two soil types (collected from forests), (C. litter), three...
Summary Many introduced species can co‐exist within the same ecosystem and sometimes interact with each other. Under such situations, eradication of one may cause unexpected negative effects. Nakoudo‐jima in Ogasawara (Bonin) Islands is an oceanic island that had feral goats were 1880s, but eradicated 1999. Following their eradication, alien invasive shrub Leucaena leucocephala (Fabaceae) was predicted to increase drastically. In this study, we tested hypothesis enhanced expansion L. using...
H ata K, S uzuki J ‐ I & K achi N (2010). Fine‐scale spatial distribution of seedling establishment the invasive plant, Leucaena leucocephala , on an oceanic island after feral goat extermination. Weed Research 50 472–480. Summary On islands, native vegetation disturbed by goats has been invaded alien shrub, removal. We investigated how L. at earliest stages invasion was related to distance from seed sources and structure herbaceous vegetation. At a fine scale in Nakoudojima Island,...
H ata K, K ato & achi N (2012). Leaf litter of the invasive Casuarina equisetifolia decomposes at same rate as that native woody species on oceanic islands but releases more nitrogen. Weed Research 52 , 542–550. Summary We tested whether decomposition rates and loss leaf an alien tree, are affected by traits environmental conditions in Ogasawara Islands north‐western Pacific Ocean. In a field experiment, we compared mass among four treatments 2 × design forest type (native C. ) ). The...
Soil erosion after vegetation degradation induced by disturbance feral goats, an invasive mammal, can lead to loss or accumulation of soil at a local scale and alter chemical properties. This alteration properties in turn affect the establishment plant species. We evaluated relationships among extent erosion, properties, distribution species grassland ecosystems goat eradication on Nakodo‐jima Island northwestern Pacific. In 105 1 × 1–m quadrats, changes were measured position topsoil over 2...
A 19-yr study of the dynamics an invasive alien species, Bischofia javanica Blume, in a secondary forest was conducted Bonin Islands, Japan. The begun 1984 when another Pinus luchuensis Mayer, had to die because infection by pine nematode as well typhoon damage 1983. Diameters at breast height (DBHs) all trees 20 m plot and heights saplings (<1.3 m, ≥0.3 height) were measured almost every 3 yr. total basal area P. decreased over time, fallen 1998. B. increased more than 10-fold 19 yr without...
Effects of an invasion alien shrub species, Leucaena leucocephala, were investigated on subsequent establishment a native mid-successional wooden Schima mertensiana at early-successional stages after disturbance in subtropical oceanic island, Chichijima Japan. Changes basal areas, densities and size distribution forests site dominated by L. leucocephala compared with those Trema orientalis stages. germination seeds growth seedlings S. quantified the sites. There few recruited they did not...
The eradication of dominant, nonnative trees can alter soil conditions in forest ecosystems by changing the forest's water balance. To test this idea, we measured surface forests dominated an invasive tree (Casuarina equisetifolia Forst.) on Nishijima Island, a subtropical island Ogasawara Islands group, northwestern Pacific Ocean. volumetric content soils at sites where all C. were killed herbicide was compared with adjacent invaded control sites, and effects time since removal (up to 3 yr)...
We investigated the effects of litter accumulation by an alien tree, Casuarina equisetifolia, on germination and seedling establishment Rhaphiolepis wrightiana, a shrub native to Ogasawara (Bonin) Islands, in northwestern Pacific Ocean, field experiment. compared emergence seedlings forests dominated C. equisetifolia with that forests, without removal. More than 75% emerged during year except at sites removal (approximately 45%). Thus, seeds R. wrightiana can germinate under if they are...
The 4J(Me-CC-H) coupling constant, previously established as a probe of bond order,1-3 was used to examine orders in number quinones. It found that the presence quinone moiety does not cause localization aromatic rings adjacent ring.
We tested whether vegetation recovery on an oceanic island after the eradication of feral goats is related to disturbances by and seabird nesting in island. To test, we investigated relationships among aboveground biomass herbaceous vegetation, nutrient concentrations soil goat eradication, degradation before eradication. The investigation was conducted Nakoudojima, a subtropical situated northwestern Pacific Ocean with consideration fine-scale variation topography structure current...
Abstract Oceanic islands are a major tourist destination, and the invasion of exotic plants on oceanic is serious problem. To discuss how herbaceous plant driven by human disturbance an island, we assessed distribution patterns species along metropolitan road, including parking lots, island Chichijima in Ogasawara Islands Japan North Pacific Ocean. We observed 16 representing seven families, all have also been recorded surveys 25 years ago. Species richness (number per plot) ranged from 0 to...
Abstract Disturbances caused by invasive ungulates alter soil environments markedly and can prevent ecosystem recovery even after eradication of the ungulates. On oceanic islands, overgrazing trampling feral goats has vegetation degradation erosion, which chemistry. To understand effects changes on plant performance, we conducted a laboratory experiment to assess herbaceous species growth under various conditions with phosphorous, nutrients, acidity. Subsoil was collected from Nakodo-jima in...
Extirpation of invasive plants does not always result in successful restoration native plant communities because it can alter ecosystem function or promote further incursion other plants. To test whether seedlings become established without extirpating plants, we evaluated the survival and growth a tree species, Schima mertensiana, planted under closed forest dominated by an Casuarina equisetifolia Ogasawara Islands, oceanic archipelago western Pacific Ocean. The initial establishment S....