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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Seaweed communities in four subtidal habitats within the Great Bay estuary, New Hampshire: Oyster farm gear, oyster reef, eelgrass bed, and mudflat
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Seaweed communities in four subtidal habitats within the Great Bay estuary, New Hampshire: Oyster farm gear, oyster reef, eelgrass bed, and mudflat

机译：新罕布什尔州大湾口内四个潮汐生境中的海藻群落：牡蛎养殖场设备，牡蛎礁，鳗草床和滩涂

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摘要

The seaweed communities that developed on oyster farm gear in the Great Bay Estuary in New Hampshire (NH) were compared to three adjacent natural subtidal habitats: an oyster reef, eelgrass bed, and a mudflat. Both farm gear and oyster reefs have received little attention with respect to associated seaweeds. Comparisons were based upon replicate quadrat samples taken during August, and October 2014, plus August 2015. Mean species richness (all dates combined, N = 12) was significantly and substantially lower on the mudflat (2.86 +/- 0.56 SE taxa/0.25 m(2)), but not different among the other three habitats (range: 9.00 +/- 0.97 to 11.00 +/- 1.41 taxa/0.25 m(2)). Mean biomass was also statistically different across habitats (P < .0001), ranging from 5.6 +/- 3.0 SE g/m(2) on the mudflat to 409.9 +/- 67.9 g/m(2) on the farm gear. Multivariate (PRIMER) analysis showed each habitat pair had significantly different seaweed communities. Thirty-nine seaweed taxa were recorded from the four habitats over the three dates, plus June 2014 for all the habitats excluding Farm Gear: 22 red, 14 green, and 3 brown algae. Thirty-six of the 39 (92.3%) were native species, including several ulvoid green algae and the brown alga Pylaiella littoralis that has been associated with eutrophic habitats. Eight disjunct species that are more common south of Cape Cod were also collected. Three introduced Asiatic red algae were collected: Dasysiphonia japonica, Agarophyton vermiculophyllum and Melanothamnus harveyi. Non-native seaweeds represented 81% of the biomass on farm gear and 84% on mudflats, but lower fractions in other habitats. Overall, these data document the substantial value of the gear used on oyster farms in providing seaweed habitat in northern New England. Our findings for seaweeds are similar to previous research in the region and elsewhere, which documents the habitat value of oyster farm gear for fish and invertebrates. The artificial materials used for oyster farm gear can provide habitat for native as well as introduced species.
机译：将在新罕布什尔州（NH）的大湾河口上的牡蛎养殖场上发育的海藻群落与三个相邻的自然潮下生境进行了比较：牡蛎礁，鳗草床和滩涂。在相关的海藻方面，农具和牡蛎礁都很少受到关注。比较是基于2014年8月，2014年10月以及2015年8月采集的四倍体样本进行的。在滩涂中，平均物种丰富度（所有日期加起来，N = 12）显着较低（2.86 +/- 0.56 SE分类单元/0.25 m） （2）），但在其他三个栖息地之间没有区别（范围：9.00 +/- 0.97至11.00 +/- 1.41分类单元/0.25 m（2））。各生境之间的平均生物量也有统计学差异（P <.0001），范围从滩涂的5.6 +/- 3.0 SE g / m（2）到农具的409.9 +/- 67.9 g / m（2）。多元（PRIMER）分析显示，每个生境对都有明显不同的海藻群落。在这三个日期中，四个生境中记录了39个海藻类群，此外，2014年6月，不包括“农场装备”的所有生境：22个红藻，14个绿藻和3个褐藻。 39个物种中有36个（92.3％）是本地物种，其中包括几种无节藻的绿藻和与富营养化的栖息地相关的褐藻海藻Pylaiella littoralis。还收集了八种在科德角南部更常见的杂种。收集了三个引进的亚洲红藻：三角孢子藻，Ag虫藻和黑变种。非本地海藻在农具中的生物量占81％，在滩涂中的生物量占84％，但在其他栖息地中则较低。总体而言，这些数据证明了牡蛎养殖场使用的渔具在提供新英格兰北部海藻栖息地方面的巨大价值。我们对海藻的研究结果与该地区和其他地区以前的研究相似，该研究记录了牡蛎养殖设备用于鱼类和无脊椎动物的栖息地价值。用于牡蛎养殖设备的人造材料可以为本地物种和引进物种提供栖息地。

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  • 来源
    《Journal of Experimental Marine Biology and Ecology》 |2020年第3期|151307.1-151307.12|共12页
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  • 作者单位

    Univ New Hampshire Jackson Estuarine Lab 85 Adams Point Rd Durham NH 03824 USA|UNH Manchester 88 Commercial St Manchester NH 03101 USA;

    Univ New Hampshire Jackson Estuarine Lab 85 Adams Point Rd Durham NH 03824 USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Aquaculture; Ecosystem services; Macroalgae; Management;

    机译：水产养殖;生态系统服务;大型藻类;管理;

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