Effects of macroalgal accumulations on the variability in zoobenthos of high-energy macrotidal sandy beaches

Quillien, Nolwenn; Nordström, Marie C.; Gauthier, Olivier; Bonsdorff, Erik; Paulet, Yves-Marie; Grall, Jacques

doi:10.3354/meps11151

Cited by 30 publications

(57 citation statements)

References 73 publications

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“…In this three-year study, the macrofaunal community showed quite high and fairly stable diversity indices values (species richness, H' and J'), although several changes in community composition were observed during this period that were revealed by the high amplitude of turnover biodiversity. The turnover values obtained towards the end of the study were high compared to those reported in the literature (Wilson & Shmida, 1984;Quillien et al, 2015). In detail, turnover biodiversity values (β t = 0.39 ± 0.10) displayed a wide range in amplitude in the first period (2002 and 2003) compared to the second one (β t = 0.38 ± 0.04) (2004 and 2005), indicating high variability in species turnover with slight stabilization towards the end of the study.…”

Section: Macrofaunal Community Development On a Temporal Scalesupporting

confidence: 54%

Biodiversity, feeding habits and reproductive strategies of benthic macrofauna in a protected area of the northern Adriatic Sea: a three-year study

et al. 2017

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The macrozoobenthic community at a sublittoral station located in the Marine Protected Area of Miramare, Gulf of Trieste (Italy) was investigated monthly from June 2002 to July 2005. Community variables were studied and related to food sources (particulate, total and biopolymeric carbon contents, benthic microalgae and meiofauna). In addition, the macrofaunal response to a heatwave that occurred in summer 2003 in the area was also explored. Univariate and multivariate analyses highlighted that the macrozoobenthic community structure shifted towards the end of the study. Diversity remained fairly stable throughout the study, despite the high turnover values. From a dominance of short-lived invertebrates related to irregular fresh organic matter inputs, the community shifted toward long-lived taxa, principally related to an increase of biopolymeric C and microalgal biomass. Semelparous invertebrates seem to be less resistant to high temperatures compared to iteroparous ones. The latter proved to be capable competitors since they prevailed over the semelparous species towards the end of the study.The community exhibited a certain degree of resistance to high temperature, due to the adaptation of the macrofaunal invertebrates to this particular stress, induced by the wide natural fluctuations in temperature that occur on a seasonal basis in the Gulf of Trieste. This study highlights the importance of long datasets to assess the state and ecological processes of the macrofaunal communities.

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Section: Macrofaunal Community Development On a Temporal Scalesupporting

confidence: 54%

Biodiversity, feeding habits and reproductive strategies of benthic macrofauna in a protected area of the northern Adriatic Sea: a three-year study

et al. 2017

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“…Within this region, the amount of stranded Ulva spp. is also variable along time and reaches its highest biomass between May and September (Hull, 1987;Quillien et al, 2015). The two types of sandy beaches (Type I and Type II), with or without green macroalgal accumulations (Type I-GT, Type II-GT, or Type I-NoGT, Type IINoGT), are evenly distributed along the coastline (Fig.…”

Section: Study Areamentioning

confidence: 98%

“…Furthermore, it raises the question of the magnitude of impact on macrotidal sandy beach ecosystem during the actual green macroalgae bloom (i.e. from spring until late summer under these latitudes) as addressed by Quillien et al (2015).…”

Section: Speciesmentioning

confidence: 99%

“…Understanding how macrotidal (mean spring tide >4 m, Allaby, 2010) sandy environments respond to seasonal opportunistic macroalgal accumulations is thus a current challenge. Recently, studying the effects of green tides on macrotidal sandy beaches at small spatial and temporal scale, Quillien et al (2015) found that along a gradient of increasing coverage of stranded Ulva spp. the overall b-diversity and the natural variability in space and time of macrofauna decrease.…”

Section: Introductionmentioning

confidence: 99%

“…They often have strong impacts on sediment zoobenthos and greatly modify the functioning of this usually uncovered ecosystem (Bonsdorff, 1992). In exposed macrotidal systems, studies of the effects of eutrophication are few and spatially restricted (Martinetto et al, 2010;Quillien et al, 2015), whereas in sheltered micro-or atidal coastal systems it has been shown that accumulation of drifting macroalgae negatively affects water and sediment, as well as other primary producers (Hull, 1987;Jeffrey et al, 1992;Sundb€ ack, 1994;Bombelli and Lenzi, 1996). In addition, by modifying the habitat, the presence of drifting algae in such environments affects recruitment, community structure and production of benthic macrofauna (Hull, 1987;Bonsdorff, 1992;Norkko and Bonsdorff, 1996;Raffaelli et al, 1998;Grall and Chauvaud, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Large-scale effects of green tides on macrotidal sandy beaches: Habitat-specific responses of zoobenthos

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Quantifying the direct and indirect relationships linking the environment, seagrass, and their associated fauna

Millot,

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et al. 2024

Ecosphere

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Foundation species such as seagrasses modulate critical ecosystem processes, promote biodiversity, and structure community spatial and temporal dynamics. Hence, they play a key role in mediating the response of biodiversity to environmental changes. The breadth of their contribution to biodiversity maintenance and the potential cascading effects of their alteration remain unclear as we lack a comprehensive understanding of the intricate mechanisms governing their response to environmental changes and that of their associated fauna. Indeed, the mechanisms involved are often studied in isolation or at scales that only provide incomplete representations of the complex functioning of these ecosystems. This study aimed to clarify the direct and indirect relationships linking the environment, seagrass, and their associated faunal assemblages, using structural equation modeling (SEM). To this end, we review the literature to derive theoretical models of the functioning of seagrass ecosystems and test them using long‐term monitoring data covering 14 years of nine different Zostera marina seagrass beds across 500 km of coastline. We show that contradictory relationships and ambiguities regarding seagrass–biodiversity relationships emerge from the currently available literature (covering experimental, observational, and modeling studies). The SEM approach allowed us to clarify these direct and indirect relationships and resolve most ambiguities. In particular, we show that seagrass mediates the effect of the environment on its associated communities. However, this mediating effect is different, both qualitatively and quantitatively, for epifauna and infauna. Unexpectedly, the diversity of benthic macrofauna appeared to be controlled and promoted by the biomass rather than by the shoot density of the seagrass beds. We also provide quantitative estimates for the direct and cascading pathways linking seagrass biodiversity to environmental changes. Overall, by synthesizing, clarifying, and quantifying the multiple relationships linking a foundation species such as seagrass to its environment and associated biodiversity, we contribute to a better understanding of seagrass meadows functioning and help predict the potential consequences of foundation species alteration on their associated fauna.

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Effects of macroalgal accumulations on the variability in zoobenthos of high-energy macrotidal sandy beaches

Cited by 30 publications

References 73 publications

Biodiversity, feeding habits and reproductive strategies of benthic macrofauna in a protected area of the northern Adriatic Sea: a three-year study

Biodiversity, feeding habits and reproductive strategies of benthic macrofauna in a protected area of the northern Adriatic Sea: a three-year study

Large-scale effects of green tides on macrotidal sandy beaches: Habitat-specific responses of zoobenthos

Quantifying the direct and indirect relationships linking the environment, seagrass, and their associated fauna

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