Bryozoan nodules, coralline algae, scleractinian corals and oysters form an important organic buildup, 1.2-4.5 m thick in the Langhian-Serravaliann sediments of Egypt. Based on type, shape and size of the substrate, b...Bryozoan nodules, coralline algae, scleractinian corals and oysters form an important organic buildup, 1.2-4.5 m thick in the Langhian-Serravaliann sediments of Egypt. Based on type, shape and size of the substrate, bryozoan nodules take tree-like and globular morphologies. Tree-like speci- mens reach 10 cm in maximum height and 3 cm in diameter, while Globular ones attain 9 cm in maxi- mum diameter. Most tree-like nodules are perforated with wide or narrow pores, few are non-perforated. Globulars and few tree-like forms are with mamelon-like structures. Perforations on the outer surfaces may indicate a symbiotic relationship between bryozoans and a live plant substrate. Nod- ules from Homiera and Gharra areas of the Cairo-Suez District with wider perforations may indicate growth in slightly lighter or turbid areas of the continental shelf than those of North Western Desert of narrower perforations. Non-perforated nodules may assume an incrustation on ephemeral substrate .展开更多
Freshwater biofouling threatens a variety of human activities,from the supply of water and energy to recreation.Several species of freshwater bryozoans are notorious for clogging pipes and filters but have been relati...Freshwater biofouling threatens a variety of human activities,from the supply of water and energy to recreation.Several species of freshwater bryozoans are notorious for clogging pipes and filters but have been relatively poorly studied to date.We report,for the first time,a biofouling species of freshwater bryozoan,Pectinatella magnifica(Leidy,1851),from several freshwater rivers,lakes and ponds in China.A complete description,national distribution and the fouling problems are provided.Exactly how Pectinatella magnifica arrived in China remains unclear,but anthropochory and zoochory are considered to be important dispersal pathways.展开更多
本文描述了新疆塔里木盆地塔中地区岩心中的上奥陶统良里塔格组的变口目苔虫3科12属16种,包括8个未定种,分别为Prasopora grayae Nicholson et Etheridge,Atactoporella declivis(Hu),Peronoporasp.,Meso-trypa angularisUlrich et Bass...本文描述了新疆塔里木盆地塔中地区岩心中的上奥陶统良里塔格组的变口目苔虫3科12属16种,包括8个未定种,分别为Prasopora grayae Nicholson et Etheridge,Atactoporella declivis(Hu),Peronoporasp.,Meso-trypa angularisUlrich et Bassler,Dekayiasp.,Batostoma increbescens Bork et Perry,B.sp.1,B.sp.2,B.sp.3,Eridotrypasp.,Bythoporasp.,Amplexopora minnesotensis(Ulrich),Leptotrypasp.,Hallopora elegantula(Hall),H.incontroversa(Ulrich),Diplotrypa catenulata Coryell。展开更多
基金supported by King Saud University, Deanship of Scientific ResearchCollege of Science Research Center
文摘Bryozoan nodules, coralline algae, scleractinian corals and oysters form an important organic buildup, 1.2-4.5 m thick in the Langhian-Serravaliann sediments of Egypt. Based on type, shape and size of the substrate, bryozoan nodules take tree-like and globular morphologies. Tree-like speci- mens reach 10 cm in maximum height and 3 cm in diameter, while Globular ones attain 9 cm in maxi- mum diameter. Most tree-like nodules are perforated with wide or narrow pores, few are non-perforated. Globulars and few tree-like forms are with mamelon-like structures. Perforations on the outer surfaces may indicate a symbiotic relationship between bryozoans and a live plant substrate. Nod- ules from Homiera and Gharra areas of the Cairo-Suez District with wider perforations may indicate growth in slightly lighter or turbid areas of the continental shelf than those of North Western Desert of narrower perforations. Non-perforated nodules may assume an incrustation on ephemeral substrate .
基金Supported by the National Natural Science Foundation of China(Nos.31100407,31471962)
文摘Freshwater biofouling threatens a variety of human activities,from the supply of water and energy to recreation.Several species of freshwater bryozoans are notorious for clogging pipes and filters but have been relatively poorly studied to date.We report,for the first time,a biofouling species of freshwater bryozoan,Pectinatella magnifica(Leidy,1851),from several freshwater rivers,lakes and ponds in China.A complete description,national distribution and the fouling problems are provided.Exactly how Pectinatella magnifica arrived in China remains unclear,but anthropochory and zoochory are considered to be important dispersal pathways.
