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Search Word: Localization, Search Result: 6
1
Dong-Soo Ha(Eco-institute for Oriental Stork, Korea National University of Education) ; Su-Kyung Kim(Eco-institute for Oriental Stork, Korea National University of Education) ; Yong-Un Shin(Natural Heritage Division, Cultural Heritage Administration) ; Jongmin Yoon(Research Center for Endangered Species, National Institute of Ecology) 2021, Vol.2, No.4, pp.293-297 https://doi.org/10.22920/PNIE.2021.2.4.293
초록보기
Abstract

The oriental stork (Ciconia boyciana) is listed as an endangered species internationally. Its resident population has been extirpated in South Korea since 1971. Its predicted historical habitat included forests (54%), rice paddy fields (28%), grasslands (17%), river-streams (less than 1%), and villages (less than 1%) based on pre-extirpation records in a previous study. However, habitat attributes of recently reintroduced oriental storks since 2015 remain unknown. To examine habitat use patterns and home ranges of recently reintroduced oriental storks, 2015-2017 tracking data of 17 individuals were used to analyze their spatial attributes with a Kernel Density Estimate method and breeding status. Their habitat use patterns from peripheral to core areas were highly associated with increasing rice paddy fields (26%) and decreasing forested areas (55%). Scale-dependent home ranges were 51% smaller for breeders than for non-breeders on average. Our study results highlight that the habitat use pattern of reintroduced oriental storks seems to be comparable to the historical pattern where the used area is likely to be more centralized for breeders than for non-breeders in South Korea. Furthermore, the direction of habitat management for oriental storks should focus on biodiversity improvement of rice paddy fields with chemical free cultivation and irrigation.


2
Rob H. Marrs(School of Environmental Sciences, University of Liverpool) ; John O'Reilly(Ptyxis Ecology, Lambley) ; Rob J. Rose(UKEH Lancaster, UK Centre for Ecology & Hydrology) ; HyoHyeMi Lee(National Institute of Ecology, Seocheon) ; Josu G. Alday(Department of Crop and Forest Sciences, University of Lleida) 2022, Vol.3, No.3, pp.139-148 https://doi.org/10.22920/PNIE.2022.3.3.139
초록보기
Abstract

Saxifraga hirculus is classified as a vulnerable plant species in Europe, and it is confined to base-rich flushes in the British uplands. However, a lack of available information about its conservation status hampers the development of adaptive strategies for its in-situ conservation, especially with respect to grazing. To assess the effectiveness of sheep grazing in maintaining viable populations of S. hirculus, we compared the community dynamics of the vegetation in a base-rich flush over 44 years in two plots: one sheep-grazed under business-as-usual sheep grazing densities and the other fenced to exclude grazing. The plots were established in 1972, and the abundances of all vascular plants, bryophytes, and litter were measured at six intervals until 2016. Our results showed that although the presence of S. hirculus was maintained in both plots over the 44 years, it declined and reached a minimum between 1995 and 2010, when it was close to extinction. Since 2013, Saxifraga has recovered only slightly. Interestingly, the S. hirculus response appeared to be independent of grazing treatment, but it mirrored wider changes in the vegetation composition and structure within the flush over the 44 years. These changes are similar to others reported in broader uplands that have been attributed to a combination of reduced nitrogen and sulfur deposition and global warming. Thus, the simple adaptive management approach of “just managing” sheep grazing appeared ineffectual for preserving the S. hirculus population. S. hirculus showed signs of recovery at the end of the study period within this base-rich flush.


3
Jeong-Hui Kim(EcoResearch Incorporated) ; Sang-Hyeon Park(EcoResearch Incorporated) ; Seung-Ho Baek(EcoResearch Incorporated) ; Donghyun Hong(Department of Integrated Biological Science, Pusan National University) ; Hyunbin Jo(Institute for Environment and Energy, Pusan National University) 2022, Vol.3, No.2, pp.122-128 https://doi.org/10.22920/PNIE.2022.3.2.122
초록보기
Abstract

To present the spatial variation of fish assemblages in the Geum River in Korea, the concept of beta diversity (β-diversity) estimates based on the variance of the community data table was applied. Fish communities and environmental variables were collected from 13 sampling sites along the in mid-low reaches of the River. We calculated the β-diversity and local contribution to beta diversity (LCBD) values at each site depending on the two types of data, ‘occurrence’ with Jaccard and Sørensen dissimilarity coefficients, and ‘abundance’ with Hellinger distance. Multivariate and correlation analyses were also performed to determine the relationships between LCBD and other variables, such as community indices and physicochemical and hydrological factors. The β-diversity values of fish communities in the River were estimated as 0.218 and 0.145 for occurrence data table with Jaccard and Sørensen respectively, and 0.268 for abundance data. Similar patterns of LCBD along the sampling sites were detected in two dissimilarity measurements of occurrence table, and LCBD values with abundance data were slightly different. The LCBD values are strongly correlated with community indices, and also suitable for indicating the uniqueness of fish assemblages. However, further research is needed to determine the LCBD value as an indicator of environmental variability.


4
Devy Atika Farah(Universitas Negeri) ; Agus Dharmawan(Universitas Negeri) ; Vivi Novianti(Universitas Negeri) 2021, Vol.2, No.3, pp.144-152 https://doi.org/10.22920/PNIE.2021.2.3.144
초록보기
Abstract

Sanankerto is one of pilot projects for tourism villages in Indonesia due to its natural tourism potential with a 24-ha bamboo forest located in Boon Pring Andeman area. However, the distribution of existing bamboo has never been identified or mapped. Thus, the management is facing difficulty in planning and developing tourism potential as well as spatial management in the area. Therefore, the objectives of this study were to identify and analyze the structure of bamboo vegetation in the Boon Pring Tourism village and to perform vegetation mapping. The type of research was descriptive exploratory with a cluster sampling technique (i.e., a two-stage cluster) covering an area of ± 10 ha. Bamboo vegetation analysis was performed by calculating diversity index (H’), evenness index (E), and Species Richness index (R). Data were collected through observation and interviews with local people and the manager to determine zonation division. Mapping of bamboo vegetation based on zoning was processed into thematic maps using ArcGis 10.3. Micro climatic factors were measured with three replications for each sub-cluster. Data were analyzed descriptively and quantitatively. Nine species of bamboo identified. Diversity, evenness, and species richness indices differed at each location. Activities of local communities, tourists, and manager determined the presence, number, and distribution of bamboo species. These bamboo distribution maps in three zoning (utilization, buffer, and core) can be used by manager for planning and developing natural tourism potential.


5
Min-Ji Lee(Department of Biological Science, Kunsan National University) ; Young-Gyu Ban(Daejeon Insectarium, Agricultural Life Policy Division, Daejeon City Hall) ; Heejo Lee(Invasive Alien Species Team, National Institute of Ecology) ; Young Ha Kim(Invasive Alien Species Team, National Institute of Ecology) ; Dayeong Kim(Invasive Alien Species Team, National Institute of Ecology) ; Nang-Hee Kim(Environmental Impact Assessment Team, National Institute of Ecology) ; Dong Eon Kim(Department of Research Planning, National Institute of Ecology) 2023, Vol.4, No.3, pp.104-114 https://doi.org/10.22920/PNIE.2023.4.3.104
초록보기
Abstract

In this study, the distribution, bait preference, hosts, symbionts, habitat status, and cytochrome c oxidase subunit-I sequences of the ant Linepithema humile were analyzed. This species habitat comprised approximately 1.5 km along stone crevices, flower gardens, roadsides, and container yards in the vicinity of Busan station, Korea. Feeding activity of this species was confirmed in 9 species of 7 families of plants. Which was approximately 14% of total flora (63 species of 37 families) in the studied area. Particularly, it was observed that Dendranthema indicum and Camellia japonica were the most frequently visited. Further, we verified that they interacted with four species of aphids. We identified 22 species of ants (17 genera, 4 subfamilies) inhabiting the Busan station area, including L. humile, Tetramorium tsushimae, Nylanderia flavipes and the alien species Paratrechina longicornis. In areas where L. humile was the dominant species, the habitat of local native ants was reduced by approximately 30%. Bait preference was ranked in the following order: jelly, water with glucose (25%), and yogurt, with the highest preference for baits containing sugar and protein. The 630-bp cytochrome c oxidase subunit-I sequences of the local L. humile populations were 99% identical to those of L. humile in the National Center for Biotechnology Information database, and the Argentine ants that invaded Korea had a sequence identical to that of other invasive populations from China, Japan, and New Zealand. As L. humile rapidly increases due to domestic adaptation, continuous monitoring and control strategy for eradication are needed to protect domestic biodiversity.


6
Vivi Novianti(Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang) 2023, Vol.4, No.1, pp.16-27 https://doi.org/10.22920/PNIE.2023.4.1.16
초록보기
Abstract

Primary succession on bare rocks is a challenge for invaders, including one of which was plants. The invasion of bare rock by exotic species raises the question of whether their presence hinders or facilitates succession. This study aimed to determine the role of exotic species in primary succession in six overburden (OB) coal mines using a chronosequence approach. Vegetation analysis was undertaken using line transects. Measurements were carried out on the absolute and relative coverage of each species. Native and exotic species were identified and grouped using information from local communities, identification books, and websites. The relationship between time and number of species, time, and relative dominance of exotic and native species was analyzed using Pearson’s correlation. Species number and dominance data were analyzed descriptively. The number of native species from the six OB heaps was higher (57) than that from exotic heaps (50). Neither the number of species nor the coverage showed a significant relationship with time. Exotic species predominated throughout the age of the embankment but tended to decrease over time. Temporary dominance by exotic species plays a role in assisting primary succession in the OB. This process might be prolonged without the temporary dominance of exotic species during early primary succession.


Proceedings of the National Institute of Ecology of the Republic of Korea