Biophysical interactions in coastal habitats DOI Open Access

Jan Cornelis de Smit

Published: Feb. 21, 2023

In order to successfully implement nature-based solutions as (part of) coastal defense, there is a need for insight into their efficiency and reliability. The wave-attenuation capacity of vegetated ecosystems like seagrasses salt marshes has been widely studied. However, stability on the medium long term (i.e., engineering timescales) needs be quantified. Key wave attenuating have high internal stability. lateral extent strongly influenced by vertical (sediment) adjacent mudflats / or seagrass meadows. this thesis sediment thresholds subtidal lower intertidal (from meadows up tidal flats) under strong current attack Typically such are measured via field measurements laboratory flume experiments. problem with these approaches is, however, that lack hydrodynamic control, so can only indirectly, experiments require ecosystem transplantation use mimics. Field flumes therefore developed way generate controlled hydrodynamics in situ, used quantify flats (chapters 2 4). We explored Seagrass – Sediment Light (SSL) feedback measuring resuspension various densities types (chapter 3). were able establish general relation between density This was then implemented simplified model which assess effects changes typical waves storminess. found resilient storms, but sensitive wind conditions depending topographical setting. Benthos influence flats. complex interaction, because many species all act differently. different generalized energy consumption. tested approach field, we still large variability Therefore, conducted an experiment where assessed how combinations highly contrasting change 5). strongest individual effect overruled other species. When implementing risk accumulation pollutants microplastics. microplastic trapping within biogenic habitats 6). susceptibility habitat plastic determined ability reduce turbulence near seabed. Furthermore, smaller particles much more likely sequestered they ‘hide’ larger grains.

Language: Английский

Thermal stress affects bioturbators' burrowing behavior: A mesocosm experiment on common cockles (Cerastoderma edule) DOI Creative Commons
Zhengquan Zhou, Tjeerd J. Bouma, Gregory S. Fivash

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 824, P. 153621 - 153621

Published: Feb. 4, 2022

The intensity of marine heatwaves is increasing due to climate change. Heatwaves may affect macroinvertebrates' bioturbating behavior in intertidal areas, thereby altering the deposition-erosion balance at tidal flats. Moreover, small-scale topographic features on flats can create pools during low tide, thus changing heat capacity These could then potentially operate as refuge environments heatwaves. We studied responses waves using well-known cockle Cerastoderma edule a model species. Different temperature regimes (i.e., fluctuating between 20 and 40 °C) micro-topographies presence vs. absence water pools) were mimicked mesocosm experiment with regular regimes. Our results demonstrate that behavioral stress strongly depend site-specific morphological features. Cockles covered by shallow moved up when exposed thermal stress, while burrowing deeper into sediment pools. But both cases, their migratory increased under compared ambient treatments. long-term cumulative cockles' respiration rates decreased health conditions, causing mass mortality after four weeks gradually exposure. Overall, present findings provide first insights how change response global warming.

Language: Английский

Citations

31
Modelling spatial and temporal patterns in bioturbator effects on sediment resuspension: A biophysical metabolic approach DOI
Francesco Cozzoli, Milad Shokri,

Tatiana Gomes da Conceição

et al.

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 792, P. 148215 - 148215

Published: June 3, 2021

Language: Английский

Citations

29
Impact of benthos on morphodynamics from a modeling perspective DOI
Peter Arlinghaus, Wenyan Zhang, Alexa Wrede

et al.

Earth-Science Reviews, Journal Year: 2021, Volume and Issue: 221, P. 103803 - 103803

Published: Sept. 7, 2021

Language: Английский

Citations

27
Warming alters non-trophic interactions in soft bottom habitats DOI Creative Commons
Simona Laukaityte, Melanie J. Bishop, Laura L. Govers

et al.

Oecologia, Journal Year: 2025, Volume and Issue: 207(2)

Published: Feb. 1, 2025

Abstract Though there is mounting evidence that climate warming altering trophic interactions between organisms, its effects on non-trophic remain relatively undocumented. In seagrass systems, the bioturbating activity of infauna influences annual patch development by influencing seed burial depth and germination success as well sediment properties. If bioturbation altered warming, consequences may result. Here, we assessed how heatwaves alter rates when no bioturbators (control), single mixtures contrasting feeding activities are present. The three manipulated were surface (top 1-2 cm sediment) biodiffusor, brown shrimp ( Crangon crangon ), shallow 3–8 cm) diffusor, common cockle, Cerastoderma edule ) upward (5–15 conveyor, polychaete, Cappitellidae spp. We applied two temperature treatments: (1) a present-day scenario set at average summer habitat (17ºC); (2) heatwave modelled maximum recorded (26.6ºC). Under conditions, was greater in presence than control where added (42–74% vs. 33 ± 7%, respectively). Cockles had greatest impact amongst all bioturbators. scenario, mixed bioturbator treatment increased to match cockle treatment. polychaetes elevated buried seeds under temperature, but not scenario. Overall, these results indicate have potential both amplify disrupt interactions, with implications for germination.

Language: Английский

Citations

0
Bioaccumulation and Trophic Transfer of Heavy Metals in Marine Fish: Ecological and Ecosystem-Level Impacts DOI Creative Commons
Andra Oros

Journal of Xenobiotics, Journal Year: 2025, Volume and Issue: 15(2), P. 59 - 59

Published: April 18, 2025

Heavy metal contamination in marine ecosystems poses a critical environmental challenge, with significant implications for biodiversity, trophic dynamics, and human health. Marine fish are key bioindicators of heavy pollution because their role food webs capacity bioaccumulation transfer. This review synthesizes current knowledge on the pathways mechanisms accumulation fish, focusing factors that influence uptake, retention, tissue distribution. We explore processes governing transfer biomagnification, highlighting species-specific patterns risks posed to apex predators, including humans. Additionally, we assess ecological consequences at population, community, ecosystem levels, emphasizing its effects reproduction, community structure, interactions. By integrating recent findings, this highlights gaps suggests future research directions improve monitoring risk assessment. Given persistence bioavailability metals environments, effective control strategies sustainable fisheries management imperative mitigate long-term public health risks.

Language: Английский

Citations

0
Antagonistic impacts of benthic bioturbator species: Interconnected effects on sedimentary properties, biogeochemical variables, and microbial dynamics DOI
Jérôme Morelle, Arnaud Huguet, Anaïs Richard

et al.

Journal of Experimental Marine Biology and Ecology, Journal Year: 2024, Volume and Issue: 573, P. 152000 - 152000

Published: Feb. 16, 2024

Language: Английский

Citations

3
Coastal ecosystem engineers and their impact on sediment dynamics: Eelgrass–bivalve interactions under wave exposure DOI Creative Commons
Lukas Meysick, Eduardo Infantes, Luca Rugiu

et al.

Limnology and Oceanography, Journal Year: 2022, Volume and Issue: 67(3), P. 621 - 633

Published: Jan. 31, 2022

Abstract Habitat forming ecosystem engineers play critical roles in structuring coastal seascapes. Many engineers, such as seagrasses and epifaunal bivalves, are known to have positive effects on sediment stability increase protection resilience. Others, bioturbating infaunal may instead destabilize sediment. However, despite the common co‐occurrence of bivalves seascapes, little is their combined dynamics. Here, we used wave flumes compare dynamics monospecific multispecific treatments eelgrass, Zostera marina , associated (infaunal Limecola balthica Cerastoderma edule Magellana gigas ) under a range exposures. Eelgrass reduced bedload erosion rates by 25–50%, with digital elevation models indicating that eelgrass affected micro‐bathymetry decreasing surface roughness ripple sizes. Effects mobilization were species‐specific; L. 25%, C. increased 40%, while M. had effect. Importantly, modified impacts bivalves: destabilizing vanished presence found additive stabilization potential for mutual anchoring. Such interspecific interactions likely relevant habitat patch emergence resilience extreme conditions. In light future climate scenarios where increasing storm frequency exposure threaten ecosystems, our results add mechanistic understanding between relevance management conservation.

Language: Английский

Citations

12
Temporal dynamics of heatwaves are key drivers of sediment mixing by bioturbators DOI Creative Commons
Zhengquan Zhou,

Natalie Steiner,

Gregory S. Fivash

et al.

Limnology and Oceanography, Journal Year: 2023, Volume and Issue: 68(5), P. 1105 - 1116

Published: March 6, 2023

Abstract Heatwaves affect tidal flat ecosystems by altering the bioturbating behavior of benthic species, with potential consequences for sediment oxygenation, particle mixing, and erodibility. Although frequency duration heatwaves are expected to increase under global warming scenarios, we lack insights into how heatwaves' temporal dynamics behaviors. Using widely distributed bioturbator Cerastoderma edule as model quantified identical heat‐sum but different (i.e., 3‐ vs. 6‐d heating normal temperature cycles) behaviors mixing processes in mesocosms. Our results show that short frequent 3‐d heatwave cycles increased magnitude behaviors, thereby resulting more bio‐mixed than observed infrequent prolonged cycles. This unexpected result could be ascribed weakening health condition indicated a high death rate (47.37%) no‐heatwave control Present findings reveal impact on bioturbation will strongly depend future heatwaves: enhanced unless exceeds species resistance increases mortality.

Language: Английский

Citations

6
Sediment stability: can we disentangle the effect of bioturbating species on sediment erodibility from their impact on sediment roughness? DOI Creative Commons
Annabelle Dairain,

Olivier Maire,

Guillaume Meynard

et al.

Marine Environmental Research, Journal Year: 2020, Volume and Issue: 162, P. 105147 - 105147

Published: Sept. 12, 2020

Language: Английский

Citations

15
Key Bioturbator Species Within Benthic Communities Determine Sediment Resuspension Thresholds DOI Creative Commons
Jaco C. de Smit, Muriel Brückner,

Katherine I. Mesdag

et al.

Frontiers in Marine Science, Journal Year: 2021, Volume and Issue: 8

Published: Oct. 4, 2021

Abundant research has shown that macrobenthic species are able to increase sediment erodibility through bioturbation. So far, however, this been at the level of individual species. Consequently, we lack understanding on how such effects act bioturbator communities. We assessed isolated and combined three behaviorally contrasting species, i.e., Corophium volutator , Hediste diversicolor Limecola balthica varying densities critical bed shear stress for resuspension ( τ cr ). Overall, effect a single could be described by power function, indicating relatively large small which diminishes toward higher density. In contrast previous studies, our results not generalized between using total metabolic rate, rate may only suitable integrate bioturbation within closely related species; highly require consideration species-specific strategies. Experiments benthic community revealed ability reduce is mainly determined largest in reducing as opposed dominant terms rate. Hence, predict accurately model net communities evolution tidal flats estuaries, identification key bioturbating with their spatial distribution imperative. Metabolic laws used describe actual activity.

Language: Английский

Citations

13