Wood decay at sea

Charles, François; Coston‐Guarini, Jennifer; Guarini, Jean‐Marc; Fanfard, Sandrine

doi:10.1016/j.seares.2016.05.002

Cited by 16 publications

(18 citation statements)

References 20 publications

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“…In the present experiment, shipworm communities removed, on average, 60.4 ± 3.4 (mean ± SD) % of the initial volume of the wood blocks. A previous estimate based on gravimetric measurements evaluated this removal as 47.1 ± 2.1% [19]. As expected, volume losses were significantly correlated with mass losses reported earlier using a gravimetric approach (Fig.…”

Section: Extent Of Wood Consumption By Shipwormssupporting

confidence: 85%

“…Detailed descriptions of the experimental conditions are given in Charles et al [19]. The experiment took place from April 18, 2014 to May 11, 2015 at the mouth of a small river, "La Massane", which drains a forested, partially protected watershed in the foothills of the French Eastern Pyrenees mountains.…”

Section: Experimental Designmentioning

confidence: 99%

“…Determining the rate at which wood is consumed is a first step to determining the extent shipworms contribute to wood decay at sea. Some gross estimates of the impact of shipworms on wood destruction exist; these have been made from the assessment of the contribution of shipworm tubes to the cross-sectional area of trunks [18] or from mass loss of pre-weighed wood blocks [16,19]. According to these studies, shipworms could roughly remove 40-50% of the wood initially available.…”

Section: Extent Of Wood Consumption By Shipwormsmentioning

confidence: 99%

“…After they settle on a piece of wood as larvae, they develop, reproduce and die inside the wood mass. Simple gravimetric measurements have shown that in temperate latitude areas, these species can remove about half 1 3 the mass of coarse woody debris available to them, within 6 months [19]. This first estimate only partially reflects the full extent of wood consumption, as weight measurements of infested wood boards necessarily include the mass of the organisms themselves and the calcareous layer that lines the wall of the shipworms' tunnels.…”

Section: Introductionmentioning

confidence: 99%

“…This first estimate only partially reflects the full extent of wood consumption, as weight measurements of infested wood boards necessarily include the mass of the organisms themselves and the calcareous layer that lines the wall of the shipworms' tunnels. The weight of these combined parts is assumed to be small in comparison to that of wood itself [16,19] but a more precise estimate should be made, especially when wood boards are overcrowded by shipworms and knowing that density of mineral calcium carbonate is 6-7 times greater than that of most woods.…”

Section: Introductionmentioning

confidence: 99%

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It’s what’s inside that counts: computer-aided tomography for evaluating the rate and extent of wood consumption by shipworms

et al. 2018

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Experiments were done to investigate in situ colonization of pine wood blocks by marine wood borers at the mouth of a small mountain river in the foothills of the Eastern Pyrenees. Standardized blocks were recovered after remaining underwater for increasingly long durations, until the available resource was exhausted by the shipworms assemblage that developed. Computer-aided tomography (CT) was used for visualizing and quantifying biogenic structures into the wooden blocks. The biodiversity survey of the wood pieces colonized indicated that up to three species of shipworms shared the resource at the same time. The specific wood consumption rate of Nototeredo norvagica was estimated 185 mm 3 ind −1 day −1. The quantification of voids created by shipworm crowding indicated that total tunnelling represents, on average, 60% of the initial volume of a wood block, revising upward earlier estimates of wood destruction by 28%. CT analysis provides the quantitative measurements necessary to parameterize individual-based growth models linking wood consumption with the species diversity of shipworm assemblages.

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Section: Extent Of Wood Consumption By Shipwormssupporting

confidence: 85%

Section: Experimental Designmentioning

confidence: 99%

Section: Extent Of Wood Consumption By Shipwormsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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It’s what’s inside that counts: computer-aided tomography for evaluating the rate and extent of wood consumption by shipworms

et al. 2018

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Contribution of fungal and invertebrate communities to wood decay in tropical terrestrial and aquatic habitats

Ferrer

Heath

Canam

et al. 2020

Ecology

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Wood is a major carbon input into aquatic ecosystems and is thought to decay slowly, yet surprisingly little terrestrial carbon accumulates in marine sediments. A better mechanistic understanding of how habitat conditions and decomposer communities influence wood decay processes along the river–estuary–ocean continuum can address this seeming paradox. We measured mass loss, wood element, and polymer concentrations, quantified invertebrate‐induced decay, and sequenced fungal communities associated with replicate sections of Guazuma branch wood submerged in freshwater, estuarine, and near‐shore marine habitats and placed on the soil surface in nearby terrestrial habitats in three watersheds in the tropical eastern Pacific. Over 15 months, we found that wood decayed at similar rates in estuarine, marine, and terrestrial sites, reflecting the combined activity of invertebrate and microbial decomposers. In contrast, in the absence of shipworms (Teredinidae), which accounted for ~40% of wood mass loss in the estuarine habitats, decay proceeded more slowly in freshwater. Over the experiment, wood element chemistry diverged among freshwater, estuarine, and marine habitats, due to differences in both nutrient losses (e.g., potassium and phosphorus) and gains (e.g., calcium and aluminum) through decay. Similarly, we observed changes in wood polymer content, with the highest losses of cellulose, hemicellulose, and lignin moieties in the marine habitat. Aquatic fungal communities were strongly dominated by ascomycetes (88–99% of taxa), compared to terrestrial communities (55% ascomycetes). Large differences in fungal diversity were also observed across habitats with threefold higher richness in terrestrial than freshwater habitats and twofold higher diversity in freshwater than estuarine/marine habitats. Divergent decay trajectories across habitats were associated with widespread order‐level differences in fungal composition, with distinct communities found in freshwater, estuarine and marine habitats. However, few individual taxa that were significantly associated with mass loss were broadly distributed, suggesting a high level of functional redundancy. The rapid processing of wood entering tropical rivers by microbes and invertebrates, comparable to that on land, indicates that estuaries and coastal oceans are hotspots not just for the processing of particulate and dissolved organic carbon, but also for woody debris and for the breakdown of lignin, the most recalcitrant polymer in plant tissue.

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Wood traits and tidal exposure mediate shipworm infestation and biofouling in southeastern U.S. estuaries

Hernández

Angelini

2019

Ecological Engineering

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Wood decay at sea

Cited by 16 publications

References 20 publications

It’s what’s inside that counts: computer-aided tomography for evaluating the rate and extent of wood consumption by shipworms

It’s what’s inside that counts: computer-aided tomography for evaluating the rate and extent of wood consumption by shipworms

Contribution of fungal and invertebrate communities to wood decay in tropical terrestrial and aquatic habitats

Wood traits and tidal exposure mediate shipworm infestation and biofouling in southeastern U.S. estuaries

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