본 연구는 학암포 사질조간대에 서식하는 대형저서동물의 군집구조와 분포양상의 특징을 분석하기 위하여 실시하였 다. 조사 정점의 퇴적물 평균입도는 1.90∅~2.52∅의 범위로 평균 2.37∅으로 나타나 전체 정점에서 전형적인 사질조 간대의 중립사 퇴적상을 나타냈다. 유기물 함량은 0.90%~1.46%의 범위로 평균 1.15%이며, 대부분의 정점에서 사질조 간대에서 나타나는 낮은 유기물 함량 수치가 나타났다. 전체 조사 정점에서 6개의 분류군 총 59종, 출현 개체수는 668inds./㎡이었다. 조사지역의 10개 정점에서 Bray-Curtis index의 유사도(Similarity)를 분석한 결과, 크게 3개의 그룹으로 나뉘었는데, 조간대 상부지역인 St. 2~St. 4, 조간대 중부지역인 St. 5~St. 8, 조간대 하부지역인 St. 9~St. 10으로 이루어졌다. 또한, 상·중·하부로 나누어지는 공간적인 군집구조 양상이 나타났다.

본 연구는 통영시 당동만의 환경요인과 동물플랑크톤 군집을 분석하여 군집 형성 과정과 연안 부유생태계를 이해하기 위해 2008년 동계시기부터 2011년 춘계시기까지 계절별로 환경요인과 동물플랑크톤 군집의 변화를 분석하고, 우점종 출현양상과 환경요인의 상관관계를 CCA분석하였다. 조사기간 중 동물플랑크톤은 80종, 1,599 inds.m-3가 출현하였고, 동물플랑크톤의 군집 변화는 우점종의 출현밀도에 의해 결정되는 것으로 확인되었다. 계절별 우점종은 겨울철과 봄철에 Acartia steueri, 여름철에 Penilia avirostris 그리고 가을철에 Evadne nordimanni가 우점하여 가을철을 제외한 계절에서 요각류가 우점하는 것으로 나타났고, 우점종 출현 양상을 통해 조사지역 내 우점종 간 종 간 경쟁이 확인되었다. 주요 우점종과 환경요인 간의 정준대응분석 (CCA)을 실시한 결과, 대부분의 계절에서 수온이 우점종 출현양상과 가장 상관관계가 높은 것으로 나타났고, COD, DO 그리고 T-N이 영향을 주는 환경요인으로 나타났다.

This study was carried out to measure seasonal changes in the community structure and species composition of marobenthos in the intertidal area of Dokdo. The macrobenthos identified during this study was comprised of 36 species: predominately 25 species of mollusks(69.4 %), 6 species of arthropods(16.7 %), 3 species of echinodermata(8.3 %) and 1 species of cnidaria (5.6 %). The number of marobenthos species ranged from 27 in Spring to 33 in Autumn. In terms of the top 10 dominant species, there were 7 species of mollusks and 3 species of arthropods in the this study. After analyzing the bray-curtis similarity, it was divided into two large groups(A, B). Such group classification matched the SIMPROF(Similarity Profile Analysis) and the one-way ANOSIM(Analysis of similarities) analysis.

The purpose of this present study is to measure the changes of regional cerebral blood flow(rCBF) was continually monitored by laser-doppler flowmeter (Transonic Instrument, USA) through the data acquisition system composed of MacLab and Macintosh computer. Contractile force was measured with force displacement transducer under 1.5 g loading tension. Rhus verniciflua stokes increased the changes of rCBF in rats, significantly. The rCBF of Rhus verniciflua stokes was decreased by pretreated propranolol, l-NNA and methylene blue. But atropine indomethacin did not change the rCBF. Contractions evoked by PE 0.1μM were significantly inecreased by Rhus verniciflua stokes. Propranolol significantly altered the effect of Rhus verniciflua stokes, but l-NNA, ODQ and indomethacin did not change the relaxation of Rhus verniciflua stokes. These results suggest that Rhus verniciflua stokes can increase the rCBF and relax EP induced contraction of isolated rat aorta, and that is related to sympathetics and nitric oxide.

The objective of this study is to measure the changes of regional cerebral blood flow(rCBF) and blood pressure(BP) in rats, following the intravenous injection of drug. The measurement was continually monitored by laser-doppler flowmeter (Transonic Instrument, USA) and pressure tranducer(Grass, USA) in anesthetized adult Sprague-Dawley rats for about 2 to 2 and a half hours through the data acquisition system composed of MacLab and Macintosh computer. The result of this experiment was as following 1. Poria increased the changes of rCBF in rats, significantly. 2. The rCBF of Poria was significantly decreased by pretreated propranolol, but not by pretreated L-NNA. 3. Radix Cynanchi Wilfordii decreased the changes of rCBF in rats, significantly. 4. The rCBF of Radix Cynanchi Wilfordii was not changed by pretreated propranolol and L-NNA. 5. Poria and Radix Cynanchi Wilfordii increased the changes of rCBF in rats, significantly. 6. The rCBF of Poria and Radix Cynanchi Wilfordii was significantly decreased by pretreated propranolol, but not by pretreated L-NNA. 7. Poria decreased the changes of BP in rats, significantly. 8. The BP of Poria was significantly increased by pretreated propranolol and L-NNA. 9. Radix Cynanchi Wilfordii did not change the BP in rats. 10. The BP of Poria and Radix Cynanchi Wilfordii did not change by pretreated propranolol but was increased by pretreated L-NNA. According to the result above, Poria and Radix Cynanchi Wilfordii have a different effect on each other, extract together. It is considered that the effect of Poria and Radix Cynanchi Wilfordii increased that of each drugs, the increasing rCBF of Poria and Radix Cynanchi Wilfordii is mediated by adrenergic β-receptor.