Population dynamics and seed banks of the threatened seagrassHalophila beccariiin Pearl Bay, Guangxi

Co-occurrence of juvenile horseshoe crabs Tachypleus tridentatus and Carcinoscorpius rotundicauda in an estuarine bay, southwestern China

“…data) and are dominated by Aegiceras corniculatum and Avicennia marina, with some Bruguiera gymnorrhiza and Kandelia obovata. Beds of the seagrass Zostera japonica are distributed seaward and extend from the edges of the mangrove forests on tidal flats, while Halophila beccarii is distributed in small patches on tidal flats, typically along tidal creeks (Qiu et al 2013(Qiu et al , 2014. All mangrovevegetated areas in Pearl Bay are included in the Beilun Estuary Mangrove Nature Reserve (Ma et al 2011, China Mangrove Conservation Network, www.…”

Environmental Determinants of the Distribution of Halophila beccarii Ascherson in Hainan Island, China

“…47 , respectively. Compared with the populations elsewhere in China, the average cover of Hongpai Port (56.33 ± 14.04%) was higher than that of Pearl Bay, Fangcheng Port City, Guangxi (55%), and Tangjia Bay, Zhuhai, Guangdong (53.33%) [23,44]. In contrast, the average covers of Xinying Port and Xinying Bay were relatively low, at 7.08 ± 16.61 and 8.46 ± 10.05%, respectively, which were lower than the average cover in most regions of China [2,23,42,44].…”

“…Compared with the populations elsewhere in China, the average cover of Hongpai Port (56.33 ± 14.04%) was higher than that of Pearl Bay, Fangcheng Port City, Guangxi (55%), and Tangjia Bay, Zhuhai, Guangdong (53.33%) [23,44]. In contrast, the average covers of Xinying Port and Xinying Bay were relatively low, at 7.08 ± 16.61 and 8.46 ± 10.05%, respectively, which were lower than the average cover in most regions of China [2,23,42,44]. In terms of stem and branch density, Huachang Bay, Dongzhai Port, Xiaohai, Laoyehai, Xinying Bay, and Xinying Port had medium to low densities of stems and branches relative to other Chinese H. beccarii populations [24,44,46].…”

“…Compared with other regions of China, the total area of H. beccarii in Hainan is much larger than those in Guangxi (approximately 0.863 km 2 ) [2], Guangdong [2,[42][43][44], Hong Kong [45], and Taiwan [19] (which has the largest area of seagrass in China). The area of H. beccarii in Xiaohai is much larger than that in Pearl Bay in Guangxi (0.214 km 2 ), which is the largest H. beccarii area in China [23]. The specialized habitat of this seagrass and its limited distribution area, very small morphology, and frequent burial by sediment can hinder field surveys.…”

“…Few international studies on H. beccarii have focused on the distribution of the seagrass in the tropics [6][7][8][9][10][11][12][13] or on reproductive phenological observations [14][15][16]. In contrast, most studies on H. beccarii in China have focused on species distribution [17][18][19][20] and morphological structure [21,22], followed by population dynamics, soil seed banks [23][24][25][26], and genetic variation [27][28][29].…”