낙동강하구 을숙도 갯벌에서 새섬매자기의 생육 특성 = Growth Characteristics of Bolboschoenus planiculmis on the Eulsuk Tidal Flat of the Nakdong River Estuary, Korea

다국어 초록 (Multilingual Abstract)

Bolboschoenus planiculmis is an important prey species for winter migratory birds in the Nakdong River Estuary region, but its population has declined in the last decade due to a physio-chemical shift. To identify the growth and development characteristics of B. planiculmis, we carried out an experimental survey on the aboveground and belowground sections of B. planiculmis specimens in the Eulsuk tidal flat from April to September 2019. We divided the belowground area into two groups: a vegetation group in which B. planiculmis exists and a non-vegetation group in which B. planiculmis does not exist and measured the rate of tubers. We observed a 45% appearance frequency in the vegetation group and only a 5% frequency in the non-vegetation group, indicating that there were no supplies for plant growth. The mean density, length, and biomass of B. planiculmis aboveground were 166.90±149.62 n m^-2, 44.39±5.45 cm, and 67.63±54.46 g DW m^-2, respectively, which was approximately half of those obtained from the study in the Eulsuk tidal flat in 2002. Tuber number was the highest in the 15~25 cm deep layer(41.50%). The mean number of total tubers belowground was related to different sediment conditions(FS: flat surface, DS: disturbed surface) 251.75±16.86 n pot^-1 for FS and 171.00±25.18 n pot^-1 for DS, which was significantly different(total tubers: p<0.005). The mean biomass of B. planiculmis above-ground was 21.11±1.60 g DW pot^-1 for FS and 15.41±1.38 g DW pot^-1 for DS, which was significantly different(p<0.05). This research provides primary materials for the restoration of the Nakdong River Estuary, wintering sites for migratory birds, and protection of B. planiculmis.

참고문헌 (Reference)

1 유영한, "한강하구 습지보호지역에서 새섬매자기 개체군의 쇠퇴 원인과 복원 방안" 한국습지학회 10 (10): 165-172, 2008

2 남형규, "봄철 논습지를 이용하는 도요물떼새류의 먹이자원에 관한 연구" 한국환경생물학회 35 (35): 452-460, 2017

3 김구연, "낙동강 하구의 수생관속식물의 분포 변화와 수금류(고니류)의 먹이식물인 세모고랭이의 성장 변화" 한국생태학회 28 (28): 335-345, 2005

4 류성훈, "낙동강 하구역의 부유사 물질수지예측" 해양환경안전학회 17 (17): 185-189, 2011

5 이용민, "낙동강 하구 새섬매자기의 연간 변동과 환경 특성" 한국습지학회 13 (13): 567-579, 2011

6 김윤지, "낙동강 하구 새섬매자기 군락지 지화학 연구" 한국습지학회 21 (21): 125-131, 2019

7 안순모, "낙동강 하구 갯벌에 생육하는세모고랭이(Schoenoplectus triqueter)의 생체량및 탄소, 질소 함량의 계절 변화" 한국습지학회 8 (8): 39-49, 2006

8 Costanza, R., "The value of the world’s ecosystem services and capital" 387 : 253-260, 1997

9 Esselink, P., "The impact of grubbing by Greylag Geese(Anser anser)on the vegetation dynamics of a tidal marsh" 55 : 261-279, 1997

10 Choi, S.H., "Sprouting and growth characteristics of sea club rush(Scirpus planiculmis)" 20 (20): 276-283, 2000

11 Kim, S. -Y., "Sedimentary facies and environmental changes of the Nakdong River Estuary and adjacent coastal area" 34 (34): 268-278, 2001

12 Lillebø, A.I., "Salinity as the major factor affecting Scirpus maritimus annual dynamics : evidence from field data and greenhouse experiment" 77 (77): 111-120, 2003

13 G.S. Edwards, "Root distribution of soft-stem bulrush (Scirpus validus) in a constructed wetland" Elsevier BV 1 (1): 239-243, 1992

14 Hong, S. B, "Regional characteristics of bird in Nakdong estuary" 11 (11): 55-70, 2004

15 Ketil Koop-Jakobsen, "Plant-Sediment Interactions in Salt Marshes – An Optode Imaging Study of O2, pH, and CO2 Gradients in the Rhizosphere" Frontiers Media SA 9 : 2018

16 Kim, G.Y., "Plan of Conservation and Breeding for Scipus Planiculmis (Scipus maritimus) Community"

17 Xue, L., "Native and non-native halophytes resiliency against sea-level rise and saltwater intrusion" 806 : 47-65, 2017

18 Doornbos, G., "Nakdong estuary barrage and reclamation project : Preliminary results of the botanical, macrozoobenthic and ornithological studies" 38 (38): 115-142, 1986

19 Kim, G.Y., "Monitoring of Bolboschoenus planiculmis at restored sites on Eulsuk Island"

20 Blossfeld, S, "Light for the dark side of plant life : Planar optodes visualizing rhizosphere processes" 369 (369): 29-32, 2013

21 Wei Xue, "Intraspecific aggregation and soil heterogeneity: competitive interactions of two clonal plants with contrasting spatial architecture" Springer Science and Business Media LLC 425 (425): 231-240, 2018

22 Xue, W., "Importance of starting points in heterogeneous environments : interactions between two clonal plants with contrasting spatial architectures" 13 (13): 323-330, 2020

23 Kim, G.Y., "Impact of over-wintering waterfowl on tuberous bulrush(Bolboschoenus planiculmis)in tidal flats" 107 : 17-22, 2013

24 Zhou, J., "Hydrological conditions affect the interspecific interaction between two emergent wetland species" 8 : 2253-, 2018

25 Hugo Coops, "Growth and morphological responses of four helophyte species in an experimental water-depth gradient" Elsevier BV 54 (54): 11-24, 1996

26 Groenendijk, A. M, "Food plant biomass and feeding behavior of Geese and Swan in Nakdong river area: emphasis on the polder areas" Delta institute-NEDECO 20-, 1985

27 Lubke, R. A., "Factors affecting the distribution of the Scirpus nodosus plants in a dune slack community" 1 : 97-103, 1982

28 Mucha, A. P., "Exudation of organic acids by a marsh plant and implications on trace metal availability in the rhizosphere of estuarine sediments" 65 (65): 191-198, 2005

29 Yu, A., "Emergence and growth performance of Bolboschoenus planiculmis varied in response to water level and soil planting depth : Implications for wetland restoration using tuber transplantation" 148 : 10-14, 2018

30 Hyunyoung Yang, "Effects of tides on interspecific interactions and plastic growth responses of Bolboschoenus planiculmis" Elsevier BV 264 : 151568-, 2020

31 Hui, S., "Effects of soil salt content on growth in Scirpus planiculmis" 1 : 25-28, 2009

32 Ji Yoon Kim, "Effects of regulated dam discharge on plants and migratory waterfowl are mediated by salinity changes in estuaries" Wiley 106 (106): 58-63, 2021

33 Liu, B., "Effects of burial depth and water depth on seedling emergence and early growth of Scirpus planiculmis Fr. Schmidt" 87 : 30-33, 2016

34 Reid, G. K., "Ecology of inland waters and estuaries" D. Van Nostr and Co 485-, 1976

35 Lenzewski, N., "Dynamics of oxygen and carbon dioxide in rhizospheres of Lobelia dortmanna-planar optode study of belowground gas exchange between plants and sediment" 218 (218): 131-141, 2018

36 Lee, K.S., "Distribution of Scirpus planiculmis F. Schmidt on the Ploder Land of Southwest Seashore" 11 (11): 19-25, 1991

37 Hugo Coops, "Distribution and growth of the helophyte species Phragmites australis and Scirpus lacustris in water depth gradients in relation to wave exposure" Elsevier BV 48 (48): 273-284, 1994

38 Shepherd, R. G, "Correlations of permeability and grainsize" 27 (27): 633-638, 1989

39 김지윤, "Above-ground Biomass Estimation of Tuberous Bulrush (Bolboschoenus planiculmis) in Mudflats using Remotely Sensed Multispectral Image" 한국해양과학기술원 51 (51): 151-158, 2016