中国温带海域新发现较大面积(大于50ha)的海草床:Ⅰ黄河河口区罕见大面积日本鳗草海草床
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摘要
日本鳗草(Zostera japonica)原是中国沿海潮间带较为常见的海草种类,近些年来随着生境的破坏其分布面积急遽下降,较大面积连续分布的海草床已经非常少见。2015年5月和8月,在山东黄河河口区发现了超过1000 ha几乎连续分布的日本鳗草海草床,与互花米草生境相邻,形成独特的生态景观。对日本鳗草生物量和种群补充等基本生物学指标也进行了调查。该发现极大丰富了中国海草数据库,并为日本鳗草的深入研究及保护提供了得天独厚的实验基地。
The dwarf eelgrass Zostera japonica was common in the intertidal zone along the coast of China. Nowadays, larger Z. japonica beds are very rare because of the rapid decline resulting from increasingly severe habitat destruction. However, in this study, a large and continuous Z. japonica bed with an area > 1000 ha was found in the Yellow River estuary of Shandong province. This bed was adjacent to a Spartina alterniflora habitat, forming a unique ecological landscape. The basic biological indicators, including biomass and recruitment of Z. japonica, were obtained during two field investigations in May and August, 2015. This discovery will greatly enrich the seagrass distribution databases of China and provide a unique site for further research on this species.
The dwarf eelgrass Zostera japonica was common in the intertidal zone along the coast of China. Nowadays, larger Z. japonica beds are very rare because of the rapid decline resulting from increasingly severe habitat destruction. However, in this study, a large and continuous Z. japonica bed with an area > 1000 ha was found in the Yellow River estuary of Shandong province. This bed was adjacent to a Spartina alterniflora habitat, forming a unique ecological landscape. The basic biological indicators, including biomass and recruitment of Z. japonica, were obtained during two field investigations in May and August, 2015. This discovery will greatly enrich the seagrass distribution databases of China and provide a unique site for further research on this species.
引文
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[9]Zhang X,Zhou Y,Liu P,et al.Temporal pattern in biometrics and nutrient stoichiometry of the intertidal seagrass Zostera japonica and its adaptation to air exposure in a temperate marine lagoon(China):implications for restoration and management[J].Marine Pollution Bulletin,2015,94:103-113.
[2]Costanza R,d’Arge R,de Groot R,et al.The value of the world’s ecosystem services and natural capital[J].Nature,1997,387:253-260.
[3]Orth R J,Carruthers T J B,Dennison W C,et al.A global crisis for seagrass ecosystems[J].Bioscience,2006,56:987-996.
[4]Waycott M,Duarte C M,Carruthers T J B,et al.Accelerating loss of seagrasses across the globe threatens coastal ecosystems[J].Proc Natl Acad Sci USA,2009,106:12377-12381.
[5]Shin H,Choi H K.Taxonomy and distribution of Zostera(Zosteraceae)in eastern Asia,with special reference to Korea[J].Aquatic Botany,1998,60(1):49-66.
[6]杨宗岱.中国海草植物地理学研究[J].海洋湖沼通报,1979,2:41-46.Yang Zongdai.The geographical distribution of seagrasses in China[J].Transactions of Oceanology and Limnology,1979,2:41-46
[7]den Hartog C,Yang Z.A catalogue of the seagrasses of China[J].Chinese Journal of Oceanology and Limnology.1990,8(1):74-91.
[8]郑凤英,邱广龙,范航清,等.中国海草的多样性、分布及保护生物多样性[J].生物多样,2013,21(5):517-526.Zheng Fengying,Qiu Guanglong,Fan Hangqing,et al.Diversity,distribution and conservation of Chinese seagrass species[J].Biodiversity Science,2013,21(5):517-526.
[9]Zhang X,Zhou Y,Liu P,et al.Temporal pattern in biometrics and nutrient stoichiometry of the intertidal seagrass Zostera japonica and its adaptation to air exposure in a temperate marine lagoon(China):implications for restoration and management[J].Marine Pollution Bulletin,2015,94:103-113.