A partial analysis of ecological segregation in the chironomid community of a bog lake

Ramcharan, V.; Paterson, C. G.

doi:10.1007/bf00007994

Cited by 19 publications

(12 citation statements)

References 14 publications

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“…Cell displacement would alter competitive interactions of the remaining cells, and the displaced cells would probably fall into areas less suitable for growth . Contrary to Ramcharan & Paterson's (1978) report of only detrital material in C. scutellata guts, larvae from Nonquit Pond had diatom frustules and algal fragments in their guts . Direct observation of feeding larvae showed them to consume attached, living diatom cells .…”

Section: Resultscontrasting

confidence: 47%

Grazing rate determination of Corynoneura scutellata Winnertz (Chironomidae: Diptera)

Kesler

1981

Hydrobiologia

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Corynoneura scutellata Winnertz (Chironomidae : Diptera) grazing rates were determined radiometrically at different temperatures . The resulting temperature-grazing function was used to calculate C. scutellata grazing rates in the littoral zone of a Rhode Island lake . These grazing rates were compared to periphyton net accumulation rates, grazing rate : accumulation rate ratios ranged from 3-15% with a maximum of 70% .

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Section: Resultscontrasting

confidence: 47%

Grazing rate determination of Corynoneura scutellata Winnertz (Chironomidae: Diptera)

Kesler

1981

Hydrobiologia

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“…None was found and, if present, it was below the sensitivity of the methods. Ramcharan & Paterson (1978) provided an estimate of the annual biomass production of the leaves and stems of Nuphar variegatum, the only common macrophyte in the lake. An estimate of rhizome standing stock biomass was made by determining, through probing, the spatial distribution of rhizomes along a transect.…”

Section: Autochthonous Inputsmentioning

confidence: 99%

“…Also it was hoped to be possible to comment on the relative importance and role of allochthonous inputs, versus autochthonous production, on the structure and biological functioning of such a brown water, acid lake. Ramcharan & Paterson (1978) have previously described the study site. It is located 1.75 km S.W.…”

Section: Introductionmentioning

confidence: 99%

A preliminary organic carbon budget for a small dystrophic lake in Maritime Canada

1983

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The results of a preliminary organic budget for a small (1.13 h) dystrophic lake in Maritime Canada are presented. Wood's Pond is moderately autotrophically productive (395 mg C m-2 day-'). Allochthonous inputs overwhelmed autochthonous production by an approximate ratio of 9.7:1. Seepage through the surrounding Sphagnum mosses accounted for 89.9% of all organic carbon entering the lake while fluvial transport was responsible for over 90% of losses. The yearly balance was a net loss of approximately 1 820 kg C. The marked dominance of allochthonous inputs over autochthonous production obviously influences the physico-chemical limnology of Wood's Pond but it does not necessarily follow that this system is heterotrophic. The yearly autotrophic production, approximately 1466 kg C, essentially balances an annual community respiration and insect emergence of 1 481 kg C. This suggests that, at least in theory, the biological functioning of this dystrophic lake system could be driven almost entirely by autotrophic production.

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“…Studies on invertebrates living in macrophyte stands have shown a great species richness and a high density of organisms when compared with the benthic fauna in sediments (Soszka, 1975;Ramcharan & Paterson, 1978). Vicent et al (1982) observed that the fauna in the macrophytes presents a magnitude of two to three times the abundance of zoobenthos in the litoral zone.…”

Section: Introductionmentioning

confidence: 99%

The invertebrate colonization during decomposition of Eichhornia azurea kunth in a lateral lake in the mouth zone of Paranapanema River into Jurumirim Reservoir (São Paulo, Brazil)

Stripari

Henry

2002

Braz. J. Biol.

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The invertebrate colonization during decomposition of Eichhornia azurea was observed in a lateral lake in the mouth zone of Paranapanema River into Jurumirim Reservoir in two periods of the year. The litter bags method was used for measuring the decomposition rate as well as to evaluate the invertebrates colonization. Forty-two litter bags, measuring 15 × 20 cm in size and 2 mm mesh net, were incubated "in situ". Six litter bags (three for colonization and three for decomposition measurements) were removed after the 1 st , 3 rd , 7 th , 14 th , 28 th , 56 th and 72 nd days of incubation. After each day, the material was carefully cleaned for detritus removal and invertebrate sampling. The biological material was fixed with 4% formaline and then sorted and identified. The remaining plant material was dried in an oven (at 60 o C) and weighed. A fast material loss occurred during the first 24 hours and the decomposition rate was higher during the rainy season than in the dry season. A peak on invertebrate density (110 ind.g.DW -1 ) on the remaining detritus of Eichhornia azurea was recorded in the 56 th day of dry season, when the polyphenol concentration of plant detritus was 0.57 UDO.g.DW -1 . In the rainy season, higher density was found in the 28 th day of incubation, when the polyphenol concentration was 4.36 UDO.g.DW -1 . Apparently, the reduction in the polyphenol concentration was followed by an increase in invertebrate densities. The majority of the species observed in the detritus belongs to the collector group that was dominant after the 7 th and 14 th days in the rainy and dry seasons, respectively.Key words: decomposition, colonization, invertebrate, Eichhornia azurea, lake. RESUMO Decomposição de Eichhornia azurea e colonização por invertebradosA colonização por invertebrados durante o processo de decomposição de Eichhornia azurea foi examinada em duas épocas do ano na zona de desembocadura do Rio Paranapanema,

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A partial analysis of ecological segregation in the chironomid community of a bog lake

Cited by 19 publications

References 14 publications

Grazing rate determination of Corynoneura scutellata Winnertz (Chironomidae: Diptera)

Grazing rate determination of Corynoneura scutellata Winnertz (Chironomidae: Diptera)

A preliminary organic carbon budget for a small dystrophic lake in Maritime Canada

The invertebrate colonization during decomposition of Eichhornia azurea kunth in a lateral lake in the mouth zone of Paranapanema River into Jurumirim Reservoir (São Paulo, Brazil)

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