To investigate the domestic seed production potential of Italian ryegrass, it was sown in autumn in the southern region and harvested in the spring of the following year to investigate the productivity and quality of seeds and straw. Italian ryegrass (Lolium multiflorum Lam.) ‘GreenCall’ variety was sown in Jinju, Gyeongnam in the fall of 2020 with three seeding rates (20, 30 and 40 kg/ha). The experiment was arranged consisted of a randomized block design with three replications. The ryegrass was sown on October 17, 2020, and the harvest was on May 31, about 60 days from the heading stage. The heading stage of Italian ryegrass was April 28, and there was no difference among treatments. Plant height was significantly shorter in the 40 kg/ha seeding treatment group, and there was no significant difference in the remaining treatments. The resistance of lodging, disease, and cold did not show significant differences among treatments. Spike length and number of seeds per spike were highest at 20 kg/ha seeding amount, and there was no difference in the remaining treatments. The seed yield was the highest at 1,956 kg/ha in the 20 kg/ha seeding rate, and there was no difference in the 30 and 40 kg/ha seeding rates. The dry matter content of seeds and straws was 45.60 and 41.83% on average, and there was no significant difference among treatments. The amount of remaining straw after seed harvesting was found to be 7,689 kg/ha on average on a dry basis, and it was high in the 40 kg/ha sowing area, but there was no significant difference among treatments. According to the above results, it was found that it is most advantageous to sow at 20 kg/ha when producing Italian ryegrass seeds through autumn sowing in the southern region.

Fish assemblage of total 325 of Korean peninsula estuaries were surveyed to analyze the characteristics of community structure and diversity by sea areas for three years from 2016 to 2018. The scale (stream width) of Korean estuaries were various (14~3,356 m), and 68.9% of all estuaries showed salinity of less than 2 psu. Total 149 species classified into 52 families of fish were identified, and the dominant and sub-dominant species were Tribolodon hakonensis (relative abundance, RA, 12.5%) and Mugil cephalus (RA, 9.5%), respectively. The estuary of the Korean Peninsula had different physical and chemical habitat environments depending on the sea area, and accordingly, fish community structure also showed statistically significant differences (PERMANOVA, Pseudo-F=26.69, P=0.001). In addition, the NMDS (nonmetric multidimensional scaling) results showed the patterns that indicating fish community difference by sea areas, even though low community similarity within sea area (SIMPER, 21.79~26.39%). The estuaries of east sea areas were distinguished from the others in the aspects of which, the higher importance of migratory fishes and endangered species, and that of brackish species were characterized at south sea estuaries. However, the estuaries of west sea showed higher importance of species that have a relation with freshwater (primary freshwater species, exotic species), which is the result that associating with the lower salinity of west sea estuaries because of the high ratio of closed estuaries (78.2%). The SIMPER analysis, scoring the contribution rates of species to community similarity, also showed results corresponding to the tendency of different fish community structures according to each sea area. So far, In Korea, most studies on fish communities in estuaries have been conducted in a single estuary unit, which made it difficult to understand the characteristics of estuaries at the national level, which are prerequisite for policy establishment. In present study, we are providing fish community structure characteristics of Korean estuaries in a national scale, including diversity index, habitat salinity ranges of major species, distribution of migratory species. We are expecting that our results could be utilized as baseline information for establishing management policies or further study of Korean estuaries.

In this study, five different Lentinula edodes cultivar (Chamaram, Sanbaekhyang, Sanjo 713ho, Sanjo 715ho, Sanjo 718ho) were evaluated for their ability to decolorize Remazol Brilliant Blue R (RBBR) in MEB medium, respectively. Chamaram and Sanjo 713ho decolorized RBBR rapidly in MEB medium within 3 and 5 days. The activities of manganese peroxidase (MnP) and laccase were determined on the MEB medium with and without lignin. Sanjo 713ho resulted the highest ligninolytic enzyme activities on incubation day 1, indicating of 1,213 U/mg of MnP activity and 1,421 U/mg of laccase activity.

In order to provide basic data for preparing management standards and to verify the safety of the Chinese oak mushroom-derived moisturizing medium—which is synthesized and imported in large quantities—the presence of 321 residual pesticides, 7 heavy metals, and 3 radioactive materials was analyzed in the moisturizer samples. Examination of residual pesticides in seven moisturizing medium samples prepared using the Chinese oak mushroom and three domestic sawdust samples used for mushroom culture revealed the presence of cypermethrin and iprodione in three moisturizer samples, but the contents of these pesticides were below the standard limits. Zn was detected in ten samples, Cu was detected in nine samples, and Ni was detected in four samples, but their contents were below the standard limits. Pb, Cd, Cr, and Hg were not detected in any sample. No radioactive materials were detected in the samples. In addition, fruiting bodies of the oak mushroom were observed in each medium. Examination did not reveal the presence of any residual pesticides or harmful compounds. In this study, the use of the moisturizing medium prepared using the Chinese oak mushroom was found to be safe. As residual pesticides, heavy metals, and radioactivity—even in trace amounts—remain concentrated in the human body, continuous verification of the safety of hazardous substances and pollutants during the systematic cultivation and management of these mushrooms is required.

This study analyzed the relationship between the community structure of benthic macroinvertebrates and habitat changes in open estuaries among the sites included in the national estuary monitoring program. The estuary survey was conducted under the “Guidelines for Investigation and Evaluation of Biometric Networks” and classified by sea area, 80 places in the East Sea, 102 places in the South Sea, and 19 places in the West Sea were investigated. In a total of 201 open estuaries, benthic macroinvertebrates were identified with 4 phyla, 9 classes, 41 orders, 139 families, 269 species and 196 species in the East Sea, 182 species in the South Sea, and 90 species in the West Sea. The highest population densities were Insecta in the East Sea, the Malacostraca in the South Sea, and the Annelida in the West Sea. Through SIMPER analysis, species contributing to the similarity of benthic macroinvertebrates communities in each sea area were identified. Some species greatly influenced the similarity of clusters. The benthic community in the East Sea was affected by the salinity, so the contribution rate of freshwater species was high. On the other hand, the benthic communities of the South and West Seas showed species compositions are influenced by the substrate composition. As results, the benthic macroinvertebrate community in Korean estuaries was impacted by salinity and substrate simultaneously, and the close relationship with geographical distance was not observed. The result of this study is expected to be used to respond to environmental changes by identifying and predicting changes in the diversity and distribution of benthic macroinvertebrates in Korea estuaries.

2018년 음주운전차량에 윤창호 군이 사망하는 사고가 발생하고, 상습 음주운전에 대한 처벌을 강화하자는 국민들의 의견을 반영하여 도로교통 법 제148조의2 제1항이“제44조제1항 또는 제2항을 2회 이상 위반한 사람(자동차등 또는 노면전차를 운전한 사람으로 한정한다)은 2년 이상 5년 이하의 징역이나 1천만 원 이상 2천만 원 이하의 벌금에 처한다.”는 내용으로 일부개정이 있었다. 그런데 얼마 지나지 않아 2021. 11. 25. 헌법재판소에서 위 일부 개정된 도로교통법 중 제148조의2 제1항 중 “제44조 제1항을 2회 이상 위반한 사람”에 관한 부분이 헌법에 위반된 다는 위헌결정을 하였다. 헌법재판소는“제44조 제1항을 2회 이상 위 반”한 경우로 정하여 가중요건이 되는 과거 음주운전 금지규정 위반행위 와 처벌대상이 되는 재범 음주운전 금지규정 위반행위 사이에 아무런 시 간적 제한을 두지 않고, 죄질이 비교적 가벼운 유형의 재범 음주운전 행 위에 대해서까지 일률적으로 가중 처벌하도록 함으로써 형벌 본래의 기 능에 필요한 정도를 일탈하는 과도한 법정형을 규정한 것으로 책임과 형 벌 간의 비례원칙에 위반된다고 하였다. 그러나 음주운전의 행위태양 및 죄질의 경중에 차이가 있더라도 모두 반복된 음주운전 금지규정의 위반이라는 중요한 행위 반가치 지표적 측 면에서 다른 범죄들과 합리적으로 구별되는 동질의 범죄행위라고 볼 수 있으므로 개별적인 행위 태양을 고려하여 처벌규정을 더 세분화하지 않 았더라도 헌법이 요구하는 형벌체계에 어긋난다고 단정할 수 없다. 또한 비난가능성이 크지 않은 유형의 재범 음주운전의 경우를 위험한 반복적 음주운전행위와 동일하게 취급할 수 있다 하더라도 징역형 이외에 벌금 형이 있으므로 법관이 사실관계를 판단하여 양형을 통해 충분히 해결할 수 있는 부분이므로 이 사건 심판대상 조항의 가중처벌기준이 입법재량 을 현저히 일탈했다고 볼 수도 없다. 따라서 헌법재판소의 이 사건 위헌결정이 적절한지는 의문이다. 특히 상습 음주운전자에 대한 처벌조항이 강화되었음에도 여전히 도로교통법 (음주운전) 위반 발생건수가 감소되지 않고 있고, 국민들 사이에서 여전 히 음주운전 처벌강화에 대한 필요성이 언급되고 있으므로 이 사건 심판 대상조항을 위헌이라고 단정할 만한 국민들 사이의 법 감정에 변화도 존 재하다고 볼 수 없다. 이런 측면에서 헌법재판소가 이 사건 결정과 같은 위헌결정을 하고자 하였다면, 단순위헌결정이 아닌 법적 공백상태 및 형 벌규정의 위헌결정에 따른 소급적용으로 발생하는 재심 등의 여러 문제 를 고려하여 입법형성권을 존중하고 법적 안정성을 보장하기 위한 방편 으로서 헌법불합치 결정하는 것이 권력분립원칙에 더 부합한다고 할 것 이다.