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首页> 外文期刊>Marine ecology >Deep-sea Reef Fish Assemblage Patterns On The Blake Plateau (western North Atlantic Ocean)
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Deep-sea Reef Fish Assemblage Patterns On The Blake Plateau (western North Atlantic Ocean)

机译：布莱克高原（北大西洋西部）的深海礁石鱼组合模式

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Deep-water coral habitats are scattered throughout slope depths (360-800 m) off the Southeastern United States (SEUS, Cape Lookout, North Carolina, to Cape Canaveral, Florida), contributing substantial structure and diversity to bottom habitats. In some areas (e.g. off North Carolina) deep corals form nearly monotypic (Lophelia pertusa) high profile mounds, and in other areas (e.g. off Florida) many species may colonize hard substrata. Deep coral and hard substrata ecosystems off the SEUS support a unique fish assemblage. Using the Johnson-Sea-Link submersible (in 2000-2005, 65 dives), and a remotely operated vehicle (in 2003, five dives), fishes were surveyed in nine deep reef study areas along the SEUS slope. Forty-two benthic reef fish species occurred in deep reef habitats in these study areas. Species richness was greatest on the two coral banks off Cape Lookout, North Carolina (n = 23 and 27 species) and lowest on the two sites off Cape Canaveral, Florida (n = 7 and 8 species). Fish assemblages exhibited significantly (ANOSIM, Global R = 0.69, P = 0.001) different patterns among sites. Stations sampled off North Carolina (three study areas) formed a distinct group that differed from all dives conducted to the south. Although several species defined the fish assemblages at the North Carolina sites, Laemonema barbatulum, Laemonema melanurum, and Helicolenus dactylopterus generally had the most influence on the definition of the North Carolina group. Fish assemblages at three sites within the central survey area on the Blake Plateau were also similar to each other, and were dominated by Nezumia sclerorhynchus and L. melanurum. Synaphobranchus spp. and Neaumia sclerorhynchus differentiated the two southern sites off Cape Canaveral, Florida, from the other station groups. Combinations of depth and habitat type had the most influence on these station groups; however, explicit mechanisms contributing to the organization of these assemblages remain unclear.
机译：深水珊瑚栖息地散布在美国东南部（SEUS，北卡罗来纳州的海角out望台，佛罗里达州的卡纳维拉尔角）的整个斜坡深度（360-800 m），为海底栖息地提供了实质性的结构和多样性。在某些地区（例如北卡罗来纳州外），深层珊瑚形成了几乎单型的（Lophelia pertusa）高丘，而在其他地区（例如，佛罗里达州外），许多物种可能会在坚硬的基底上定居。 SEUS以外的深层珊瑚和坚硬的底层生态系统支持独特的鱼类组合。使用Johnson-Sea-Link潜水器（2000年至2005年，进行了65次潜水）和遥控船（2003年，进行了5次潜水），在SEUS坡度的9个深礁研究区域对鱼类进行了调查。在这些研究区的深礁生境中有42种底栖礁鱼类。在北卡罗来纳州海角观望台附近的两个珊瑚河岸，物种丰富度最大（分别为23和27种），在佛罗里达州卡纳维拉尔角附近的两个珊瑚礁上的物种丰富度最低（分别为7和8种）。地点之间的鱼群表现出明显的差异（ANOSIM，全球R = 0.69，P = 0.001）。从北卡罗来纳州（三个研究区）采样的测站组成了一个独特的组，这与在南部进行的所有潜水都不同。尽管在北卡罗莱纳州的地点有几种鱼类定义了鱼类的组合，但一般而言，北沙枣，黑腹藻和小翅目Helicolenus dactylopterus对北卡罗来纳州的定义影响最大。布莱克高原中央调查区内三个地点的鱼群也彼此相似，并且以Nezumia sclerorhynchus和L. melanurum为主。突触分支和Neaumia sclerorhynchus区分了佛罗里达州卡纳维拉尔角附近的两个南部站点与其他站点组。深度和生境类型的组合对这些站群影响最大。但是，尚不清楚促成这些集合组织的明确机制。

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