...
首页> 外文期刊>Marine ecology progress series >Deep-sea fish assemblages (300-2100 m) in the eastern Pacific off northern Mexico
【24h】

Deep-sea fish assemblages (300-2100 m) in the eastern Pacific off northern Mexico

机译:墨西哥北部外东太平洋的深海鱼类群(300-2100 m)

获取原文
获取原文并翻译 | 示例
           

摘要

Effective management of potential fisheries in deep-sea environments (200 m depth) requires better understanding of species distributions and related environmental factors. We described the bathydemersal fish assemblages (300-2100 m) off the western coast of Baja California, Mexico (23-32 degrees N) and their relationship with latitude, depth, temperature, dissolved oxygen (DO), salinity, organic matter, sediment composition and organic carbon. We collected a total of 3417 fish using a benthic sledge (18 orders, 36 families and 77 species: 27 mesopelagic, 10 bathypelagic and 40 bathydemersal; 8 new records). We found 5 latitude-depth assemblages: South-Shallow (28 degrees N, 700 m), South-Medium (28 degrees N, 700-1300 m), South-Deep (28 degrees N, 1430 m), North-Medium (28 degrees N, 700-1300 m) and North-Deep (28 degrees N, 1300-2100 m). Tropical species dominated southern assemblages, whereas northern assemblages shared species with the Southern California assemblages. A reduced number of bathydemersal species (15 species) dominated the upper slope. The middle slope (27 species) was the most diverse stratum, and lower abundances generally characterized the lower slope (12 species). Depth, DO and different water masses affected the distribution of bathydemersal species. These results are consistent with slope assemblages from different ocean basins, supporting the hypothesis that slope fish assemblages generally occupy discrete vertical ranges determined by depth and the environmental factors associated with it.
机译:要有效管理深海环境(深度大于200 m)中的潜在渔业,就需要对物种分布和相关环境因素有更好的了解。我们描述了墨西哥下加利福尼亚州西海岸(北纬23-32度)附近的深海鱼类组合(300-2100 m)及其与纬度,深度,温度,溶解氧(DO),盐度,有机质,沉积物的关系组成和有机碳。我们使用底栖爬犁共收集了3417条鱼(18目,36科和77种:27种近中生,10种深水鱼类和40种深水鱼类; 8个新记录)。我们发现了5个纬度深度组合:南浅(<28度N,<700 m),南中(<28度N,700-1300 m),南-深(<28度N,1430 m),北-北(> 28度,700-1300 m)和北-深(> 28度,1300-2100 m)。热带物种在南部组合中占主导地位,而北部组合则与南加州组合共享物种。较少的浸入水中的物种(15种)主导了上坡。中坡(27种)是最多样化的地层,较低的丰度通常是低坡的特征(12种)。深度,溶解氧和不同的水团影响着深海底栖动物的分布。这些结果与来自不同海盆的斜坡组合相吻合,支持以下假设:斜坡鱼组合通常占据离散的垂直范围,该范围由深度和与其相关的环境因素决定。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号