List of Dissertation Abstract（Risk Management and Environmental Sciences
NameSupervisorLife and Environment Management Course）

TitleAbstract
This study analyzed feeding habits of soil animals by using stable isotope and fatty acids analysis. Soil does
not only possess a diversity of organism in trophic food web but also is vital to nutrient cycling. Soilanimals are important component in the food web and also are central determinants for energy flow through

Xiang

KanekoLiuchunNobuhiro

Feeding Habit Analysis of Soilterrestrial system. Although they are significant, trophic relationships in soil ecosystem are still obscured.

Animals Using Stable Isotope andUsing stable isotope analysis, nitrogen can be used to rank relative trophic levels and carbon can be

Fatty Acids

assigned food resource. Agricultural intensification not only alters the structure of arthropod communities,
but also may affect biotic interactions by altering the availability of basal resources. Coleopteran larvae(Scarabaeidae) are known to feed humus and root, Isopoda (Armadilidium vulfare) is detritus feeder. We
used these animals as model organisms to confirm the validity of stable isotope with fatty acidmethod.
Environmental monitoring of PRTR designated substances is required, although the quantitative errors are

Sho SUZUKI

Simultaneous analysis and effects

caused by coexistent materials in water samples at simultaneous analysis by the GC-MS. In this study, I

Takashiof contaminants and pretreatments

investigated the effects by the coexistent materials for the recovery of the solid phase extraction of river

KAMEYAof PRTR designated substances inwater, and tried some treatment for cleaning samples up using silica gel and liquid-liquid extraction.

rever water.

Environmental samples from river water and waste water treatment plant are monitored, and the observed
data revealed the presence of some substances that are easily influenced by the coexistent materials.
In order to construct a wind power, regal frameworks of an environmental effect and a land regulation will

Ayano

Hiroki

IKEMOTOOIKAWAbe needed. However, the knowledge of the structure and the reality is unclear. The division of roles between
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an assessment which has the force of law, an assessment which has the force of statute and an assessment
without legally binging and the source of a conflict in an area which has a restriction of a land does not
figure out. In this thesis, the elemental information to consider the way of regulation is discussed.
It is said Anolis carolinensis which is invasive lizards in Ogasawara Islands is a predator and competitor ofAi UEDA

Fumito
KOIKE

Suitable habitat of Green anole andnative lizards, Cryptoblepharus boutonii nigropunctatus. In this study, I analyzed the spatial niche thatthe distribution of native lizards incombined different niches. In result, I found these 2 species use different perch height and it mean theyOgasawara Islands

could separete the habitat. So, it is suggested ground type Cryptoblepharus b. nigropunctatus and trunkcrown type A. carolinensis would coexist.

Many health hazards (accidents) caused by consumer products occur every year, especially accidents causedby spray type products are reported much. Therefore, in this study, exposure assessment and risk assessment
TomuShigekiSASAKIMASUNAGA

Risk assessment of chemicals

were conducted for pesticides / chlorine type detergents / air fresheners which are the top 3 products ofrelated to accident of spray typeaccident report by spray type products. However, it was necessary to use a number of assumptions because

daily necessities

information was insufficient only with published accident information and toxicity values. As a result,improvement of the accident information collection system and the necessity of acute toxicity value of eachchemical substance were suggested.

Takumi SATO

Masaru OYA

Investigation of environmentally
new use of cellulose derivatives

This study is a modeling of inovation which is way of new technology and findings new use.So in thisresearch, we used cellulose and cellulose derivatives to find new applications. First application is way ofreinforcing materials. Second one is ingredints. Third one is new removal soil method "Peeled off ".
In this study, washing mechanisms of various soils(oily soil, water soluble soil, solid particle soil) wereTerumasa
TANAKA

Masaru OYA

Analysis of soil removal

analyzed using the probability density function method assuming that the adhesion of soil and washingmechanism using probability

action following the normal distribution. As a result, it was suggested that the washing mechanism can bedensity function method

expressed parameters from this method. In addition, it was revealed that the ionicity of the surfactant had asignificant influence of soils in washing.
Embryo-larval toxicity assesment of copper for Pacific oyster (Crassostrea gigas) and Sea pineapple(Halocynthia roretzi) evaluated the effect of copper in early life stage of both species. The rsults shows that

Kenta CHIBA

ShigekiEmbryo-larval toxicity assay for24 h-EC50 for Pacific oyster was 26.5 μg-Cu/L and 48 h-EC50 for Sea pineapple was 47.2 μg-Cu/L. At theMASUNAGAcopper to marine speceis in Japansame time, copper analysis of seawater in Shidugawa bay by ICP-MS ware performed 6 times from 2015 to2016 for the purpose of exposure assesment. Those results indicated that Pacific oyster and Sea pinapple
hadn't large risk of copper to their early life stage.
A new quantifying method of total perfluoroalkyl acid (PFAA) precursors that transforms PFAA precursors
into perfluorinated carboxylic acids (PFCAs) in relation to their carbon chain lengths using hydroxyl

Shihori

Shigeki

NAKAMICHIMASUNAGA

Study of Oxidative Decomposition

radicals was proposed. However, there are concerns about formation of short-chain PFCAs. In this study,

Method for Quantification of Total

performance of different types of oxidation methods: Fenton and O3/Alkali which generate hydroxyl

Perfluoroalkyl Acid Precursors

radials, and O3 having weaker oxidation was compered. In results, formation of short-chain PFCAs wereconfirmed in all methods. It became clear that these oxidation methods are too strong for this quantifying
method.

Effect of enzyme pretreatment onMayuko
NAKAMURA

Masaru OYA

detergency of protein soil analyzed
by probability density function
methodThis study is to evaluate the effect of enzyme pretreatment on detergency of protein by probability
density function method and to make cleaning evaluation indicator. The cleaning evaluation indicator
assuming blood contamination was prepared, pretreated with enzyme, and washed. Cleaning experiments
were performed with changing the processing time or temperature of enzyme for protein soil. It wasobserved that adhesion force of protein soil was weakend by enzyme.

Species using decay wood are defined as "Saproxylic species" and contribute the nutrient cycling in forest
SatoshiFumitoMIYAZAKI

KOIKE

Community of large arthropods

ecosystem via participating decomposition of dead wood. But there are few studies dealing with them inusing decay wood in urban

urban area. My result suggested that the system of wood decomposition is unstable in urban landscape.

landspcape

Becaouse the community has low species diversity and few carivore species. Stag beetle (Dorucus rectus) is
important spesies in urban forest because it is detected specifically in urba area and very famous in Japan.

Oil palm plantation area is increasing by land use change such as deforestation for demand of palm oil. It

RyoMURAKAMI

Koichi FUJIE

Effect of biomass residue

caused the decline of soil organic matter and FFB (Fresh fruits bunch) yields. In addition that, biomass

application to the soil of palm

residue and effluent from palm oil mill have environment impacts. This study revealed the effect ofplantation based on material flowapplication of biomass residue and treated palm oil mill effluent to the palm cultivating soil based on

analysesmaterial flow analyses of the plantation and the palm oil mill in order to construct recycling system palm
plantation.

Sewage treatment by activated sludge process is associated with enormous power consumption for oxygen

KeitaroMORISHITA

Koichi FUJIE

Analysis of oxygen consumption

supply to the aeration tank. In this research, in order to improve the quality of treated water and saving

process in advanced activatedenergy of process, the material flows of dissolved oxygen and organic carbon, nitrogen derived from BOD

sludge process based onin advanced activated sludge process were analyzed it based on 24 - hour measurement including

continuous aeration off gas

continuous analysis of aeration off gas composition and the consumption structure of dissolved oxygen wasanalysis

clarified. In addition, the emission characteristics of nitrous oxide (N2O) of greenhouse gases produced in
the nitrification / denitrification process were also examined.

Continuous analysis of oxygen and carbon dioxide in aeration exhaust gas was carried out in a deep tankEvaluation of oxygen transfer
Yuuki
YAMAGISHI

Koichi FUJIE

performance and affectors by off
gas analyzing at sewage treatment
process

swirling flow reactor at a sewage treatment plant to analyze and evaluate factors influencing oxygen
dissolution performance. Air diffuser performance was determined from oxygen transfer efficiency anddissolved oxygen concentration, and the effect of airflow rate, MLSS on this was evaluated. We also
evaluated the influence of dissolved oxygen supply from the bubble zone to the bubble free zone due to theswirling flow on the gas-liquid oxygen transfer resistance in the reaction, accumulating knowledge for
improving oxygen dissolution performance.

The policy of endangered species
Kyohei

Hiroki

YOKOTAOIKAWA

conservation and citizen
participation -Suggestion systemsof species in the regulations ofeach prefecture-

Act on Conservation of Endangered Species of Wild Fauna and Flora have had some problems. For
example, there aren’t many species and it lacks citizen participation. An object of this study is suggestion
system of species in the regulations of each prefecture because the system is related to the problems. Study
techniques are interviews to each prefecture which have the system. As a result, to introduce only
suggestion system is not enough. To introduce support system with suggestion system is important to solvethese problems.
It has been known that radiocesium increases in leaf litter during decomposition, and fungi play role in

NatsukiNobuhiro

Transfer parameter values of

Watanabe

Kanekoradiocesium effects of fungitransformation of radiocesium from soil to leaf litter. We examine three possibilities of the mechanism ofradiocesium accumulation; 1) fungal translocation, 2) radiocesium movement from tree to litter, 3) leaching.
We choose fungi accumulated radiocesium in mushroom and soil contaminated in the forest (5.5 kBq/kg).
Sterized sawdust is placed prepared the fungal cultures. We indicated that fungi accumulated radiocesium.
There are types of place-based approaches appearing besides the National Forest Management Act which

Managing the national forests

manage all the national forests in the United States. Through examining the use of place-based approach in

XiaoyunHirokithrough place-based approach

the management of national forest in the United States, we understand three key points of the place-based

WANG

OIKAWA- examine the use of place-based

approach. The types (place-based laws and agreements, etc.); background (distrust to the USFS andapproach in the United States-

instability of community), and what problems they brought. These approaches might be an alternative wayof national forest management, in which the community plays a leading role in the process.
Unlike conventional methods for evaluating the biodegradability of surfactants, concentrations are not

Han Tianye

Masaru OyaEvaluation method ofabsolute values, but we focused on the relative value of the CMCof the surfactant. Based on this, whilebiodegradability oftrying to compare the existing type surfactant with the environmentally-friendly surfactant, we attempted toenvironmentally-friendly surfactant construct a new evaluation method with the surface activity and degradability and toxicity to aquaticorganisms as indices .

Flow Analysis of Toxicity and Risk
GAO RUI

Masaru OYA

Information Relevant toSurfactants in China from 1950's to2000'sIn recent years, it seemed that there was an increasing number of claims on the detrimental theory ofchemical substances in Chinese detergent, but the actual state of these information is not known. Therefore,
in this research, before 2006, we examined how the environmental or safety related information flowedfrom outside China to the domestic market, how it changed, and the characteristic problems and their causesin the transition.
No-tillage weed management(NTW) is one of the conservation agriculture methods in which weeds arecontrolled without using any kind of herbicides instead, they are manually managed beside the crops which

Binay SangatKaneko
Nobuhiro

Estimation of Nitrogen budget incan be a sustainable method to retain soil fertility as well as to maintain plant productivity. The effect of nono tillage with weed agriculutre

tillage crop plantation with the presence of weed and role of fertilizer were studied by estimating N

mangement system

dynamics. Soil, weed, wheat, soil macrofauna and nitrogen leaching was analyzed for determination ofnitrogen. No significant difference was observed between tillage and no tillage system in yield, whichsuggests that there was less competition between the crops and the weeds in NTW
In this research, we developed a method to uniformly reproduce the state of iron rust adhering to thesubstrate and examined the cleaning evaluation method such as image analysis. Cleaning experiments ofDevelopment of acid cleaner for
QingzhouLI

Masaru OYA

iron oxide elimination consideringsafetycommon acids were carried out to remove stains made by the calcium hydroxide treatment method.
Evaluation was conducted based on the washing results on concentration, temperature and time,respectively.
The detergency of mixed acid of 2 kinds and mixed acid of 3 kinds was evaluated by phenanthrolinespectrophotometry. We suggested the possibility of reduction method of oxalic acid and phosphoric acidusage by blending various acids.