Invertebrate Responses to Large- and Small-Scale Drivers in Coastal Phragmites australis Beds in the Northern Baltic Sea

IF 2.3 3区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Estuaries and Coasts Pub Date : 2024-06-03 DOI:10.1007/s12237-024-01360-9
Floriaan Eveleens Maarse, Karine Gagnon, Martin Snickars, Sonja Salovius-Laurén
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Abstract

Phragmites australis is a common helophyte, covering much of the sheltered and shallow soft bottoms along the coasts of the Baltic Sea. Despite the expansion of P. australis over the past decades, there is little information on aquatic macroinvertebrates within P. australis beds. In this study, we examined the effect of large-scale (wave exposure, nutrients) and small-scale (distance from the seaward edge, live and dead stalk density, epiphyte and rhizome biomass) drivers on the density, taxa richness, diversity, and community structure of epifauna and infauna in monospecific P. australis beds around the Åland Islands and the Archipelago Sea. We found that higher wave exposure and nutrient levels generally supported higher epi- and infauna abundance and taxa richness. The effects on Shannon–Wiener diversity were less evident apart from an increase of the infauna diversity in the Archipelago Sea with increasing nutrient levels. On a local scale, the distance from the seaward edge, live and dead stalk density, and epiphyte biomass had varying effects on both epi- and infauna communities in the different regions. Rhizome biomass had no effect on either the epi- or infauna abundance, taxa richness, or diversity. Furthermore, according to existing studies, other habitats, e.g., Zostera marina meadows, Fucus vesiculosus belts, and vegetated soft-bottomed shallow bays, are generally characterized by more abundant fauna, except for the infauna, which had a higher density in P. australis beds than in vegetated soft-bottomed shallow bays. P. australis are a widespread, expanding, and understudied habitat with an important role in supporting coastal biodiversity.

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无脊椎动物对波罗的海北部沿海葭藻床大尺度和小尺度驱动因素的反应
葭藻是一种常见的螺旋藻,覆盖了波罗的海沿岸大部分有遮蔽物的浅水软底。尽管在过去的几十年中苇草的面积不断扩大,但有关苇草床内水生大型无脊椎动物的信息却很少。在这项研究中,我们考察了大尺度(波浪暴露、营养物质)和小尺度(距离海边的距离、活茎和死茎密度、附生植物和根茎生物量)驱动因素对奥兰群岛和群岛海附近单种奥氏藻床中表栖动物和底栖动物的密度、分类群丰富度、多样性和群落结构的影响。我们发现,较高的波浪暴露度和营养水平通常支持较高的表栖动物和底栖动物丰度和类群丰富度。对香农-维纳多样性的影响并不明显,但随着营养水平的提高,群岛海的底栖生物多样性有所增加。在局部范围内,距离海边的距离、活茎和枯茎密度以及附生植物生物量对不同地区的表栖生物和底栖生物群落有不同的影响。根茎生物量对表、底栖生物的丰度、类群丰富度或多样性均无影响。此外,根据现有研究,其他栖息地(如 Zostera marina 草甸、Fucus vesiculosus 带和植被丰富的软底浅湾)的动物群落通常更为丰富,只有次生动物群落除外,它们在 P. australis 床中的密度高于植被丰富的软底浅湾。这些研究结果表明,藻华是一种广泛存在、不断扩大和研究不足的生境,在支持沿岸生物多 样性方面发挥着重要作用。
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来源期刊
Estuaries and Coasts
Estuaries and Coasts 环境科学-海洋与淡水生物学
CiteScore
5.60
自引率
11.10%
发文量
107
审稿时长
12-24 weeks
期刊介绍: Estuaries and Coasts is the journal of the Coastal and Estuarine Research Federation (CERF). Begun in 1977 as Chesapeake Science, the journal has gradually expanded its scope and circulation. Today, the journal publishes scholarly manuscripts on estuarine and near coastal ecosystems at the interface between the land and the sea where there are tidal fluctuations or sea water is diluted by fresh water. The interface is broadly defined to include estuaries and nearshore coastal waters including lagoons, wetlands, tidal fresh water, shores and beaches, but not the continental shelf. The journal covers research on physical, chemical, geological or biological processes, as well as applications to management of estuaries and coasts. The journal publishes original research findings, reviews and perspectives, techniques, comments, and management applications. Estuaries and Coasts will consider properly carried out studies that present inconclusive findings or document a failed replication of previously published work. Submissions that are primarily descriptive, strongly place-based, or only report on development of models or new methods without detailing their applications fall outside the scope of the journal.
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