• 한국산림과학회지
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• 제97권2호
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• pp.171-180
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• 2008

The characterization of tree species and forest stand conditions is useful in the planning of activities aimed to conserve biodiversity. The main objective of this study was to describe tree species diversity, species composition and stand structure of tropical deciduous forests distributed in three regions in Myanmar. Forest inventory was conducted in the Oktwin teak bearing forest, the Letpanpin community forest and Alaungdaw Kathapa National Park. According to the Jackknife estimator of species richness, 85 species (${\pm}18.16$), 70 species (${\pm}5.88$) and 186 species (${\pm}17.10$) belonging to 31 families were found in the Oktwin teak bearing forest, 33 families in Letpanpin community forest and 53 families in Alaungdaw Kathapa national park, respectively. Shannon's diversity indices were significantly different among the forests (p<0.05). It ranged from 3.36 to 4.36. Mean tree density (n/ha) of the Oktwin teak bearing forest, Letpanpin community forest and Alaungdaw Kathapa National Park were 488 (${\pm}18.6$), 535 (${\pm}15.6$) and 412 (${\pm}14.1$), while basal areas per hectare were $46.96m^2({\pm}3.23),\;49.01m^2({\pm}5.08)\;and\;60.03m^2({\pm}3.88)$, respectively. At the family level, Verbenaceae, Myrtaceae and Combretaceae occupied the highest importance value index, while at the species level it was Tectona grandis, Lagerstoremia speciosa and Xylia xylocarpa.

• Journal of Ecology and Environment
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• 제42권1호
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• pp.30-42
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• 2018

Background: The southern and eastern parts of the Gobi Desert area are a unique dry ecosystem with a diverse regional desert, semi-desert, and mountain dry steppe flora. This area habitat is located at the overlap of different floristic regions; on its northeast side, Central Asian desert flora is dominating, and on the eastern side, East Asian flora is observed. The comprehensive survey was carried out to find the floral diversity of the medicinal plants on the region. Methods: All recorded species in this study were based on the collected voucher specimens between June and August in the year 2017. Results: We recorded 23 families, 57 genera, and 78 species of vascular plants. The families Asteraceae (15 species), Fabaceae (10 species), and Amaranthaceae (10 species) were represented most in the study area, while Caragana (5 species), Salsola (4 species), and Arnebia (3 species) were the most common genera found. Conclusion: Conservation status for remarkable species was also reviewed based on the literature. Around the study area, 24 species as "sub-endemic," 10 species as "very rare," 4 species as "rare," 1 species as "alien," 13 species as "relict," 10 species as "Red Book," 2 species as "endangered (EN)," 3 species as "vulnerable (VU)," 3 species as "near threatened (NT)," and 2 species as "least concern (LC)" plants are growing.

• ALGAE
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• 제33권4호
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• pp.291-304
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• 2018

Lyngbya C. Agardh ex Gomont is a nonheterocytous cyanobacterial genus whose evolutionary history is still poorly known. The traditionally defined Lyngbya has been demonstrated to be polyphyletic, including at least five distinct clades, some of which have been proposed as new genera. Intraspecific diversity is also clearly underestimated in Lyngbya due to the lack of unique morphological characters to differentiate species. In this study, we describe the new genus Capillus T. A. Caires, C. L. Sant'Anna et J. M. C. Nunes from benthic marine environments, including two new Brazilian species (here described as C. salinus T. A. Caires, C. L. Sant'Anna et J. M. C. Nunes, and C. tropicalis T. A. Caires, C. L. Sant'Anna et J. M. C. Nunes), and two species yet to be described, one of them from India (Capillus sp. 2.1), and the other from United States of America, based on strain PCC 7419. Capillus species presented cross-wise diagonal fragmentation, assisted or not by necridic cells, which has not been previously mentioned for Lyngbya. Ultrastructural analyses showed that C. salinus and C. tropicalis have numerous gas vesicles, which are rarely described for benthic marine species. The new genus formed a well-supported clade, and the D1-D1' and Box B secondary structures of internal transcribed spacer also supported the proposal of its new species. These findings help to clarify the diversity of species in the Lyngbya complex and the taxonomy of the group, and highlight the need of further floristic surveys in tropical coastal environments, which remain poorly studied.

• Journal of Species Research
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• 제8권1호
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• pp.136-159
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• 2019

This study was carried out to investigate the flora of six islands belonging to the Gogunsan Archipelago (i.e., Sinsi-do, Seonyu-do, Munyeo-do, Yami-do, Bian-do, and Duri-do) in the Korean Peninsula. As results of five field surveys from March to October of 2016, we have identified 575 total taxa, representing 527 species, five subspecies, 42 varieties, and one hybrid, placed in 358 genera and 118 families. Of these 575 taxa, four are endemic to Korea, six taxa are listed on the Korean Red List of threatened species, 67 are floristic regional indicator plants, and 74 are invasive alien species. In this study, we compared species richness among the islands, and find that the larger the islands, the higher the species richness. In the case of habitat affinity types, forest species were most common, followed by farmland, seacoast, bare ground and wetland species. From similarity analyses based on the composition of vascular plants, each island did not exhibit either local specificity or unique diversity. On the contrary, the proportion of invasive alien and ruderal species may increase by human activities. Investigations and analyses of island flora such as this are important to assess the current status of the flora, predict future vegetation patterns and the spread of the alien species, and establish managment plans of plant diversity.

• Journal of Ecology and Environment
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• 제47권3호
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• pp.63-74
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• 2023

Background: Comparing with the several types of infrastructures, linear infrastructures are known to facilitate the spread of undesirable species in ecosystems. Recently, some new man-made habitats (e.g., gravel pads of the high-voltage towers, solid wastes and sewage habitats) were established along the Deltaic Mediterranean coast of Egypt as a result of the construction of the E-W coastal international highway. The current study evaluates the floristic composition associated with the pads of high-voltage towers that had been constructed for stabilizing the power line towers in the North Nile Delta. Plant cover was measured for 22 randomly stand. Results: Eighty-four species were recorded, of which 35 are perennials (41.6%), 2 biennials (2.3%) and 47 annuals (56.0%) belonging to 23 families. The largest families were Asteraceae (16 species), Poaceae (15 species), Chenopodiaceae (12 species), and Fabaceae (7 species). Ten aliens (10.7%) out of the 84 species were recorded. Therophytes have the highest percentage (58%), followed by hemicryptophytes (14%), chamaephytes (11%). Six vegetation groups were recognized in the study area after the application of two way indicator species analysis (TWINSPAN), Arthrocnemum macrostachyum, Phragmites australis, and Mesembryanthemum nodiflorum have the highest presence percentage. Both of Salsola cyclophylla and Solanum villosum were recorded for the first time in North Nile Delta. Natural habitat had the highest α-diversity, but the lowest β-diversity (4.9, 15.4), while gravel pads had the reverse (2.7, 30.8). Some species which are native to the desert habitats (e.g., Rumex pictus, Salsola kali, and Carthamus tenuis) were able to invade the North Nile Delta. Conclusions: Habitat of gravel pads is an expressing form about the intense of disturbance in Deltaic Mediterranean coast of Egypt. More of efforts should be carried out to avoid more human disturbances that creating as ruderal habitats which open the gate to invasive species in the flora of North Nile Delta.

• 한국환경생태학회지
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• 제34권5호
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• pp.372-395
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• 2020

본 연구는 강화군 고려산(436 m)의 관속식물을 밝히고 주요 식물들의 분포를 파악하기 위하여 수행되었다. 2018년 3월부터 2019년 8월까지 총 14회에 걸쳐 조사한 결과, 관속식물은 112과 371속 568종 10아종 45변종 2품종 4교잡종으로 총 629분류군이 확인되었다. 고려산은 한반도의 온대 중부지역에 속하고 낙엽활엽수와 침엽수 혼합림으로 산지의 대부분은 참나무류-소나무류가 우점하며, 2차림으로 구성된다. 본 지역에서 처음으로 확인된 식물은 314분류군, 한반도 특산식물은 6분류군, IUCN 평가기준에 따른 적색목록은 4분류군, 식물구계학적 특정식물은 63분류군이 확인되었다. 침입외래식물은 58분류군이며, 귀화율 9.2%, 도시화지수 15.5%로 나타났다. 본 지역은 식물 다양성이 풍부하고, 희귀식물 및 식물지리학적 중요 식물들이 관찰된다. 고려산의 효과적인 관리와 생물 다양성 보전을 위해 체계적인 사항들이 논의되었다. 본 결과는 생물 다양성의 보전과 관리방안 마련을 위한 기초자료로 활용될 것으로 판단된다.

• 한국자원식물학회지
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• 제35권4호
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• pp.541-563
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• 2022

본 연구는 남한산성의 관속식물상을 밝히고 주요 식물을 파악하였다. 2019년 6월부터 2020년 6월까지 총 30회에 걸쳐 현지조사를 조사한 결과, 관속식물은 107과 335속 513종 10아종 40변종 3품종 2교잡종으로 총 568분류군이 확인되었다. 한반도 고유식물은 17분류군, 멸종위기식물은 백부자 1분류군, 지역적색목록은 3분류군, 식물구계학적 특정식물은 총 63분류군으로 V등급에 1분류군, IV등급에 7분류군, III등급에 12분류군, II등급에 14분류군, I등급에 29분류군이 포함되었다. 북방계 식물은 66분류군, 외래식물은 총 61분류군으로 귀화율은 10.7%, 도시화지수는 9.8%로 산출되었다. 기존 선행연구와 비교를 통해 66과 161속 187종3아종19변종1품종2교잡종의 총 213분류군이 본 조사에서 처음으로 확인되었다.

• 환경생물
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• 제42권1호
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• pp.28-45
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• 2024

본 연구는 손죽도의 관속식물을 밝히고 주요 식물을 조사하였다. 2023년 4월부터 2023년 10월까지 총 4회에 걸쳐 조사한 결과, 관속식물은 109과 322속 440종 7아종 35변종 1교잡종의 총 483분류군이 확인되었으며, 이 가운데 249분류군은 본 조사에서 새롭게 기록되었다. 한반도 고유종은 4분류군, 지역적색목록은 4분류군, 기후변화 지표식물은 22분류군, 식물구계학적 특정식물은 총 99분류군으로 IV등급에 2분류군, III등급에 41분류군, II등급에 10분류군, I등급에 46분류군이 확인되었다. 외래식물은 54분류군이며, 귀화율 11.2%, 도시화지수 13.8%로 나타났다. 생태계교란식물은 3분류군이 확인되었다. 조사지의 식물상은 한반도 식물구계의 남해안아구에 속한다. 본 연구는 관속식물의 분포 자료로써 식물 종 다양성 및 분포변화의 정보로 활용될 것으로 생각된다.

• Journal of Forest and Environmental Science
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• 제36권3호
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• pp.175-186
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• 2020

This study approaches, from a floristic perspective, the under-researched human-primate competition for forest resources. Investigating the human impact on fruit trees edible for Kinda baboons (Papio kindae Lönnberg), we have collated dietary data on a free-ranging troop and floristic information on two forest sites of the Kundelungu National Park (KNP), Democratic Republic of Congo: the relatively intact Integral Zone (IZ) and the human-disturbed Annex Zone (AZ). Trees with DBH≥10 cm have been identified, counted and measured throughout 22 sample plots (11 per site), each measuring 1,000 ㎡. A total of seven woody species whose fruits are eaten by Kinda baboons were recorded. Four of them, namely the Sycamore fig Ficus sycomorus L., the Mobola plum Parinari curatellifolia Planch. ex Benth, the Kudu berry Pseudolachnostylis maprouneifolia Pax and the Monkey orange Strychnos innocua Delile were found in both sites, while the Large-leaved jackal-berry Diosyros kirkii Hiern and the Buffalo thorn Ziziphus mucronata Willd. were exclusively in the IZ, and Strychnos cocculoides Baker only in the AZ. Compared to the IZ, the AZ had lower values of stem density, species richness and diversity indices, suggesting a negative human impact on baboon-edible trees, in line with our hypothesis. Moreover, as was expected, human activities decreased the abundance of larger baboon-edible fruit trees. However, the size-class distribution of P. curatellifolia depicted a reverse J-curve in the AZ. The abundant younger P. curatellifolia trees remaining in that human-disturbed site constitute an important food stock for baboons, if well preserved. These results also illustrate the critical role of rangers' patrols, formerly more frequent (and presumably efficient) in the IZ than in the AZ of the Park. Their implications on baboons and miombo forests are discussed from both the research and conservation perspectives.

• 한국환경생태학회지
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• 제33권2호
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• pp.131-167
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• 2019

보호지역에서 적절한 보전과 관리를 수행하기 위해서는 기초 정보의 확보는 필수적이다. 뿐만 아니라 각각의 조사결과를 비교하여 평가할 수 있어야 한다. 본 연구에서는 비교 가능한 정보 확보를 위해 7개의 격자를 설정하고 정밀조사를 수행하였다. 총 16회의 조사를 통해 127과 408속 716종 10아종 88변종 16품종 830분류군이 정리되었다. 중점조사지역 6번에서 가장 많은 487분류군이 조사되었고 다음으로는 중점조사지역 4번에서 457분류군이 조사되었다. 환경부 지정 멸종위기야생식물은 6분류군이 조사되었고 관찰종으로 1분류군이 조사되었다. 한국고유종으로는 총 23분류군이 조사되었다. 식물구계학적특정식물은 V등급이 15분류군, IV등급이 27분류군, III등급이 38분류군, II등급이 31분류군 그리고 I등급이 19분류군이 정리되었고 중점조사지역 6번에서 가장 많은 70분류군이 관찰되었다. 귀화식물은 총 58분류군이 조사되었고 중점조사지역 6번에서 가장 많은 35분류군이 조사되었다. 동강유역생태 경관보전지역은 지역적인 규모에서 뿐만 아니라 국가적인 규모에서 식물다양성을 유지하고 보전하는데 있어서 중요성이 높다고 평가되었다.