Distribution and Morphology of Littoraria irrorata in Mesohaline Tidal Marshes Dominated by Juncus roemerianus
Distribution and Morphology of Littoraria irrorata in Mesohaline Tidal Marshes Dominated by Juncus roemerianus
复制标题
以灯心草为主的中盐潮汐沼泽中滨海棠的分布与形态
DOI：
10.1007/s12237-022-01093-7
复制
发表时间：
2022
影响因子：
2.7
通讯作者：
Cash, James S.
中科院分区：
文献类型：
--
作者：
Anderson, Christopher J.;Garcia, Cristina;Cash, James S.
沼泽长春花蜗牛（Littoraria pillorata）常见于大西洋和墨西哥湾沿岸的盐沼，通常扮演重要的生态角色。大部分已发表的研究，探讨这个物种的丰度和作用已经进行了沼泽为主的顺利灯心草（互花米草）。研究了L.黑针叶灯心草（灯心草roemerianus）是一种重要的沼泽物种，通常在更多的中盐条件下形成单型条件。在美国亚拉巴马和西佛罗里达的沿海边界沿着的8个沼泽中，采集了L.在四个不同的接近沼泽湾边缘的植物密度和生物量等环境数据。我们也检查了。盐度梯度上的浮游生物丰度、贝壳大小和生物量（用盐度制度指数量化）。结果表明：（1）L. J. roemerianus为主的沼泽（1.0 ± 1.0至25.3 ± 12.6蜗牛m−2）在S报告的蜗牛密度较低范围内。其它地区以互花米草为主的沼泽;（3）在向水边缘有螺的情况下，沼泽盐度与钉螺密度呈正相关（r ~ 2 = 0.53，p = 0.04），与钉螺平均壳长呈负相关（r ~ 2 = 0.86，p < 0.01）。与L.浮游生物的丰度和形态尚不清楚，但可能与盐度和潮汐连通性的各个方面有关。这些结果表明，中盐J. roemerianusmarshes可能是边缘的L.但是，鼓励进一步的研究。
Marsh periwinkle snails (Littoraria irrorata) are common in salt marshes of the Atlantic and Gulf of Mexico coast and often occupy important ecological roles. Much of the published research examining the abundance and role of this species has been conducted in marshes dominated by smooth cordgrass (Spartina alterniflora). We investigated the distribution and morphology ofL. irroratain marshes dominated by black needlerush (Juncus roemerianus) an important marsh species that commonly forms monotypic conditions in more mesohaline conditions. Eight marshes along the coastal border of Alabama and west Florida, USA, were sampled forL. irrorataand other environmental data (plant density and biomass) at four different proximities to the marsh-bay edge. We also examinedL. irrorataabundance, shell size, and biomass across a salinity gradient (quantified using a salinity regime index). We found that (1) abundance ofL. irroratainJ. roemerianus-dominated marshes (1.0 ± 1.0 to 25.3 ± 12.6 snails m−2) were within the lower range of snail densities reported forS. alterniflora-dominated marshes elsewhere, (2) mostL. irroratawere detected along the 10-m waterward edge of the marsh, and (3) considering snails at the waterward edge, a positive relationship (r2= 0.53,p= 0.04) was detected between marsh salinity and snail density along with a negative relationship (r2= 0.86,p< 0.01) between marsh salinity and mean snail shell length. Mechanisms associated withL. irrorataabundance and morphology are unclear but likely relate to various aspects of salinity and tidal connectivity. These results suggest that mesohalineJ. roemerianusmarshes may be marginal in terms ofL. irroratahabitat; however, further research is encouraged.
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发表时间：
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