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임신재,허위행,이우신,Rhim, Shin-Jae,Hur, Wee-Haeng,Lee, Woo-Shin 한국생태학회 2002 Journal of Ecology and Environment Vol.25 No.3
This study was conducted to clarify the characteristics of attitudinal bird communities in Mt. Seoraksan National Park from May to Oct. 2004. Marsh tit Parus palustris, Arctic warbler Phylloscipus borealis, coal tit Parus ater and Eurasian nuthatch Sitta europaea evenly distributed in almost elevational ranges. Goshawk Accipiter gentilis, black grouse Tetrao tetrix, white-lumped swift Apus pacificus, Siberian rubythroat Luscinia calliope, red-flanked bluetail Tarsiger cyanurus, dusky warbler Phylloscopus fuscatus, yellow-browned warbler Phylloscopus inornatus, siskin Carduelis spinus and rook Corvus frugilegus were only observed in high altitude area. Distribution pattern of birds in Mt. Seoraksan National Park showed differences by elevation. There was difference in attitudinal distribution pattern of birds in Mt. Seoraksan National Park. It seems that habitat preference or selection is different in each species. Attitudinal habitat preference of each bird species need further studies. 본 연구는 설악산국립공원에 서식하고 있는 조류군집의 계절적, 고도별 분포 현황을 조사, 분석하고 조류군집의 특성을 파악하기 위해 오색-대청봉과 백담사-대청봉 지역에서 2001년 5월부터 10월까지의 기간동안 실시되었다. 2개 조사 지역에서 쇠박새, 쇠솔새, 진박새, 동고비 등이 전체 고도별 구간에서 고르게 분포하고 있는 것으로 나타났으며, 참매, 칼새, 진홍가슴, 유리딱새, 솔새사촌, 노랑눈썹솔새, 검은머리방울새, 떼까마귀 등은 해발고도가 높은 지역에서만 관찰되었다. 동고비와 어치는 번식기인 봄과 그 밖의 계절 사이에 분포하는 고도에 차이가 있었다. 각각의 종들이 해발고도별로 분포를 달리하는 것은 서식에 필요한 다양한 자원을 효과적으로 얻기 위한 적응 형태인 것으로 보이며, 각 종별 생태에 대한 깊이 있는 연구가 수행되어야 할 것으로 판단된다.
Effects of Mixing on the Aggressive Behavior of Commercially Housed Pigs
임신재,손승훈,황현수,이재강,홍준기 아세아·태평양축산학회 2015 Animal Bioscience Vol.28 No.7
In this study, we investigated the effects of mixing on the aggressive behavior of commercially housed pigs. The behavioral patterns of 36 groups of pigs (a total of 360 animals) were observed over 3 consecutive days directly after weaning (25±1.2 days of age), and 25 and 50 days later with the aid of video technology. Fight latency and total duration and frequency of fighting were significantly different among the age groups. The aggressive behaviors decreased in 75-day old pigs if compared to 25- and 50-day old animals. Moreover, dominance index (DI) was higher in 25-day old and lower in 75-day old pigs. A comparison of dominant (DI>0) and submissive (DI<0) pigs showed significant differences (p<0.05) for major aggressive behaviors in all age groups. Dominant pigs were involved in more aggressive interactions, had longer fights, and initiated more fights than submissive pigs. Post-mixing aggressive behavior was altered by previous experience of mixing. Aggressive behavior and DI are suitable methods for analyzing the effects of mixing on commercially housed growing pigs.
입원한 노인 환자의 일상생활 수행능력, 신체적 건강상태, 간호요양원에 대한 인식도
임신재,박오장 노인간호학회 2003 노인간호학회지 Vol.5 No.2
The purpose of study was to identify degree of ADL. physical health and understanding of nursing homes and the correlation between the three variables and to verify significant differences in understanding of nursing homes according to demographic variables in the hospitalized elderly patients. The participants were 141 elderly patients (60 years or over) who were hospitalized at K. hospital in G. city between November 15 and December 15, 2002. The Barthel Index (Mahomey & Barthel, 1995) for ADL, the Physical Health State of Korean Elderly (Choi & Jung, 1991), a questionnaire on Understanding of Nursing H developed by the researchers were used. The results are summarized as follows : 1. The mean score for ADL was 80.6 points out of 100, physical health, 48.1 points out of 60, and understanding of nursing homes, 18.9 points out of 20. 2. There were significant differences in under- standing of nursing homes according to level of education (F=3.23, p=.042) and level of monthly income (F=7.22,p=.001). Duncan test confirmed that the group with post elementary school education had higher scores than those with no formal education, and the group with income over 1 million won monthly had higher scores than those with income less than 1 million won. 3. ADL and physical health had a significant positive correlation (r= .596, p=.000). physical health and understanding of nursing homes had a weak positive relation (r=.213, p= .011). The correlation between ADL and understanding of nursing homes was not significant (r= .092, p= .276). In conclusion, the level of ADL was 80.6%, physical health, 80.2%, and understanding of nursing homes, 94.5% for the participants. Physical health, level of income and level of education were factors influencing understanding of nursing homes in these patients.
임신재,손승훈,김규정,황현수 한국산림과학회 2013 Forest Science And Technology Vol.9 No.3
This study was conducted to elucidate the breeding ecology of tits in artificial nest boxes in both deciduous and coniferous forests located in Mt. Namsan, Seoul Metropolitan, Korea, from March to June 2012. Great tit Parus major and varied tit P. varius both used the artificial nest boxes in the coniferous forest, but only the great tit used the artificial nest boxes in the deciduous forest for breeding. There were 27 artificial nest boxes in the coniferous forest and 17 in the deciduous forest. The rate of breeding success was 6.7–26.7% for both study sites. The clutch size of varied tits was less than that of great tits. Brood size, incubation period and nestling care period were the same for great and varied tits in the coniferous forest. There were no differences related to forest type for number of breeding pairs, breeding behaviors, egg measurements, and results of hatching, fledgling and breeding for great tits bred in artificial nest boxes. Long-term ecological research on food availability and breeding success of tits is needed for the conservation of these birds and their habitats.
임신재,손승훈,김규정 한국산림과학회 2011 Forest Science And Technology Vol.7 No.3
This study was conducted to clarify the breeding ecology of tits Parus spp. using artificial nest boxes with different entrance diameters in a coniferous forest at the AnsungCampus, Chung-Ang University from March through July, 2006 to 2010. A total of 42 breeding pairs, including varied tit Parus varius, marsh tit P. palustris, coal tit P. ater and great tit P. major utilized the artificial nest boxes during our study period. There were differences in preferred entrance diameter of artificial nest boxes for each species. The 30 mm artificial nest box entrance diameter was used most frequently. For each tit species, there were differences in first egg date, clutch size, brood size, egg incubation period, nestling care period and breeding success over the course of the study. Long-term ecological research is necessary to collect more data on environmental factors to be able to estimate their full consequences in terms of the breeding ecology of Parus spp.
임신재,송승훈,황현수 한국산림과학회 2014 Forest Science And Technology Vol.10 No.4
This study was conducted to clarify the characteristics of bat populations in lowland dry evergreen forests of the CentralCardamom Protected Forest in Cambodia during the rainy seasons of 2011–2013 and the dry seasons of 2012–2013. In fivestudy sites of the forest, data from 160 individuals of six bat species were recorded. The Sunda short-nosed fruit bat(Cynopterus brachyotis Sunda) was the most dominant species in all study sites. Most captured bats were adults, andcaptured females outnumbered captured males. In this study, populations of the bats, except for that of the Sunda shortnosedfruit bats, were not stable. Therefore, forest loss and degradation should be prohibited in the study areas to ensurestable bat populations. Further studies are required to investigate the ecological characteristics of fruit bats in various foresttypes for the conservation of the mammals and their habitats.