Dynamics of phytoplankton detritus in a shallow, eutrophic lake (Lake Loosdrecht, The Netherlands)

Otten, Jerko H.; Gons, Herman J.; Rijkeboer, Machteld

doi:10.1007/978-94-011-2432-4_6

Cited by 7 publications

(13 citation statements)

References 15 publications

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“…Fractions of refractory particulate matter of 0. limnetica were determined after three weeks of incubation in the dark in aerobic conditions (Otten et al, 1992).…”

Section: Methodsmentioning

confidence: 99%

“…P. hollandica has a pmax values of 0.52 d-' at 20 "C . Refractory fractions, estimated as the particulate matter remaining after 2 1 days of aerobic decomposition of 0. limnetica, averaged 0.18 (Otten et al, 1992). This information suffices for exploring the phytoplankton to detritus ratio (Rpld) as a function of /J ( = D) for hypothetical values of cr @q.…”

Section: Phytoplankton To Detritus Ratiosmentioning

confidence: 99%

“…The peat fragments appear in the water column after resuspension in periods of high windspeed, but rapidly resettle in calm conditions. The fine-sized detritus is likely to derive mainly from the phytoplankton, has higher dry weight concentrations and a greater partial attenuation coefficient for downwelling light than the phytoplankton (Gons, 1987;Gons et al, 1991;Otten et al, 1992;.…”

Section: Introductionmentioning

confidence: 99%

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Coupling of phytoplankton and detritus in a shallow, eutrophic lake (Lake Loosdrecht, The Netherlands)

Gons¹,

Burger-Wiersma

Otten³

et al. 1992

Hydrobiologia

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An oscillating steady state is described of phytoplankton, dominated by Prochlorothrix hollandica and Oscillatoria limnetica, and sestonic detritus in shallow, eutrophic Lake Loosdrecht (The Netherlands). A steady-state model for the coupling of the phytoplankton and detritus is discussed in relation to field and experimental data on phytoplankton growth and decomposition. According to model predictions, the phytoplankton to detritus ratio decreases hyperbolically at increasing phytoplankton growth rate and is independent of a lake's trophic state. The seston in L. Loosdrecht contains more detritus than phytoplankton as will apply to many other lakes. The model provides a basis for estimating the loss rate of the detritus, including decomposition, sedimentation and hydraulic loss. In a shallow lake like L. Loosdrecht detritus will continue to influence the water quality for years.

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“…Fractions of refractory particulate matter of 0. limnetica were determined after three weeks of incubation in the dark in aerobic conditions (Otten et al, 1992).…”

Section: Methodsmentioning

confidence: 99%

Section: Phytoplankton To Detritus Ratiosmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Coupling of phytoplankton and detritus in a shallow, eutrophic lake (Lake Loosdrecht, The Netherlands)

Gons¹,

Burger-Wiersma

Otten³

et al. 1992

Hydrobiologia

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“…Together, these two filamentous forms comprised, on average, about 90% of the algal mass in suspension . However, about half to two-thirds of the seston (Ͻ150 m) consisted of detritus, largely originating from Oscillatoria and Prochlorothrix (Otten et al 1992). Secchi depth ranged from 30 to 50 cm.…”

Section: Phosphorus Limitation In Daphniamentioning

confidence: 99%

Phosphorus limitation in Daphnia: Evidence from a long term study of three hypereutrophic Dutch lakes

DeMott

Gulati

1999

Limnology & Oceanography

105

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The Loosdrecht lakes comprise three shallow, interconnected hypereutrophic lakes in The Netherlands. A lake restoration project conducted during the 1980s resulted in reduced phosphorus loading. However, no changes in phytoplankton abundance or species composition were noted, although seston carbon:phosphorus (C:P) ratios increased. Filamentous cyanobacteria and detritus continued to dominate the seston. Moreover, planktivorous fish were very abundant. Relationships between zooplankton abundance and seston abundance and stoichiometry (C:P and carbon:nitrogen ratios) were analyzed using data collected during 9 yr of intensive study of the three lakes. Analysis based on annual means shows surprisingly strong and consistent inverse relationships between Daphnia abundance and the seston C:P ratio for two of the three lakes. In these two lakes (Loosdrecht and Vuntus Lakes), the annual mean abundance of Daphnia cucullata ranged from 104 to 0.7 individuals L−1 over a range in mean seston C:P ratios from about 250 to 500 (molar). In the third lake, Breukeleveen, Daphnia abundance was higher for a given seston C:P ratio, especially during the 2 yr following a biomanipulation project in this lake. Analysis of seston C:P ratios and Daphnia abundance in individual samples provides further evidence that high seston C:P ratios constrained Daphnia abundance in all three lakes. In contrast to Daphnia, the abundances of zooplankters with low P requirements, including Bosmina spp. and cyclopoid copepods, show little relationship to seston C:P ratios. These results suggests that the abundance of Daphnia in the Loosdrecht lakes was determined by the variable P content of their diets and consistently strong fish predation.

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“…The lake water was rich in re-suspensable material (mainly large-sized peat fragments and aggregates of fine-sized particles of epipelic origin). Detritus originating from phytoplankton was an important component of the seston (Parma & Gulati, 1990;Otten et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

An example of relationships between macrophytes, macroinvertebrates and their food resources in a shallow euthrophic lake

Dvořák

1996

Hydrobiologia

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The late-spring quantitative relationship between epiphyton and macroinvertebrates was analyzed on the basis of units of colonizable plant surface of Typha angustifolia, Phragmites australis and Nuphar lutea (floating leaves) in the shallow euthrophic Lake Loosdrecht (the Netherlands), with a high seston load. The non-predatory chironomid larvae (Glyptotendipes viridis, Endochironomus albipennis, Pentapedilum sonfens, Cricotopus sylvestris agg.) dominated among the macroinvertebrate taxa, controlling the diversity and resemblance of macroinvertebrate assemblages. There was a gradient in functional feeding groups among the chironomids from continuous filtering of the seston to prevailing utilization of epiphyton. We found no direct relationship between the total macroinvertebrate abundance and the epiphyton mass on the plants surface. We attribute this to the filter feeding-strategy of the most abundant species, Glyptotendipes viridis, that utilizes seston in the eutrophicated lake.

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Dynamics of phytoplankton detritus in a shallow, eutrophic lake (Lake Loosdrecht, The Netherlands)

Cited by 7 publications

References 15 publications

Coupling of phytoplankton and detritus in a shallow, eutrophic lake (Lake Loosdrecht, The Netherlands)

Coupling of phytoplankton and detritus in a shallow, eutrophic lake (Lake Loosdrecht, The Netherlands)

Phosphorus limitation in Daphnia: Evidence from a long term study of three hypereutrophic Dutch lakes

An example of relationships between macrophytes, macroinvertebrates and their food resources in a shallow euthrophic lake

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