Competition among mangrove oomycotes, and between oomycotes and other microbes

Sy, Newell; Jw, Fell

doi:10.3354/ame012021

Cited by 33 publications

(21 citation statements)

References 22 publications

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“…Newell, personal communication). The samples containing these acanthophysis-like structures were from the same Bahamian stations as cited by Newell and Fell (1997). Their dimensions were similar to those described in this paper, they were light to dark brown and they were almost certainly similar to the structures described in this paper.…”

Section: Discussionsupporting

confidence: 51%

Acanthophysis-like structures from wood submerged in freshwater streams in the tropics

Hyde

Goh

1998

Mycoscience

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Acanthophysis-like structures which commonly occur on submerged wood in the tropics are described and illustrated at the light microscope level. These are produced on fibre-like or rope-like strands and produce numerous detachable spinulose cells at their ends. These cells lack contents, do not germinate, and do not appear to be dispersal propagules. The acanthophysis-like structures may function as rhizomorphs enabling the fungus to colonize adjacent woody tissue, or serve to uptake oxygen from the water and these possibilities are discussed.

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Section: Discussionsupporting

confidence: 51%

Acanthophysis-like structures from wood submerged in freshwater streams in the tropics

Hyde

Goh

1998

Mycoscience

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“…The primary fungal species in decomposing salt marsh cordgrass (Spartina alterniflora) is Phaeosphaeria spartinicola, whereas that in mangroves is Halophytophthora spp. (23).…”

Section: Evolution Of Land Plants and Theirmentioning

confidence: 99%

The role of terrestrially derived organic carbon in the coastal ocean: A changing paradigm and the priming effect

Bianchi

2011

Proc. Natl. Acad. Sci. U.S.A.

659

507

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One of the major conundrums in oceanography for the past 20 y has been that, although the total flux of dissolved organic carbon (OC; DOC) discharged annually to the global ocean can account for the turnover time of all oceanic DOC (ca. 4,000–6,000 y), chemical biomarker and stable isotopic data indicate that there is very little terrestrially derived OC (TerrOC) in the global ocean. Similarly, it has been estimated that only 30% of the TerrOC buried in marine sediments is of terrestrial origin in muddy deltaic regions with high sedimentation rates. If vascular plant material—assumed to be highly resistant to decay—makes up much of the DOC and particulate OC of riverine OC (along with soil OC), why do we not see more TerrOC in coastal and oceanic waters and sediments? An explanation for this “missing” TerrOC in the ocean is critical in our understanding of the global carbon cycle. Here, I consider the origin of vascular plants, the major component of TerrOC, and how their appearance affected the overall cycling of OC on land. I also examine the role vascular plant material plays in soil OC, inland aquatic ecosystems, and the ocean, and how our understanding of TerrOC and “priming” processes in these natural systems has gained considerable interests in the terrestrial literature, but has largely been ignored in the aquatic sciences. Finally, I close by postulating that priming is in fact an important process that needs to be incorporated into global carbon models in the context of climate change.

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“…Competition in terrestrial and aquatic fungal communities has been emphasised almost exclusively by laboratory investigations [e.g. Shearer (1995) and literature cited; but see Newell and Fell (1997)]. Further field studies are required to evaluate the importance of competitive interactions in determining the structure of fungal communities in freshwater habitats.…”

Section: Discussionmentioning

confidence: 99%

Cascading effects of predatory fish exclusion on the detritus-based food web of a lake littoral zone (Lake Vico, central Italy)

2002

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An exclosure experiment was carried out in the reed-dominated littoral zone of a volcanic lake (Lake Vico, central Italy) to test whether the impact of predatory fish on benthic invertebrates cascades on fungal colonisation and breakdown of leaf detritus. The abundance, biomass, and Shannon diversity index of the invertebrate assemblage colonising Phragmites australis leaf packs placed inside: (1) full-exclosure cages, (2) cages allowing access only to small-sized fish predators, and (3) cageless controls, were monitored over a 45-day period together with the mass loss and associated fungal biomass of leaf packs. The species composition of the fungal assemblage was further assessed at the end of the manipulation. In general, invertebrate predators did not show any significant response to fish exclusion, either on a trophic guild or on a single taxon level. In contrast, the exclusion of large predatory fish induced a diverse spectrum of changes in the abundance and population size-structure of dominant detritivore taxa, ultimately increasing the biomass and Shannon diversity index of the whole detritivorous guild. These changes corresponded with significant variations in leaf detritus decay rates as well as in the biomass and assemblage structure of associated fungal colonisers. Our experimental findings provide evidence that in Lake Vico effects of fish predators on invertebrate detritivores influence the fungal conditioning and breakdown of the detrital substrate. We conclude that in lacustrine littoral zones predator-driven constraints may structure lower trophic levels of detritus-based food webs and affect the decomposition of leaf detritus originated from the riparian vegetation.

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Competition among mangrove oomycotes, and between oomycotes and other microbes

Cited by 33 publications

References 22 publications

Acanthophysis-like structures from wood submerged in freshwater streams in the tropics

Acanthophysis-like structures from wood submerged in freshwater streams in the tropics

The role of terrestrially derived organic carbon in the coastal ocean: A changing paradigm and the priming effect

Cascading effects of predatory fish exclusion on the detritus-based food web of a lake littoral zone (Lake Vico, central Italy)

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