Cladoceran remains from the recent sediments of Lough Neagh, Northern Ireland

Wood, R. B.; Andrew, T. E.; Redfern, J. M.

doi:10.1080/03680770.1989.11898798

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…Earlier reference to the zooplankton composition was made by Dakin & Latarche (1913). The cladoceran zooplankton composition has changed markedly during the past 60-70 years from bosminid to daphnid led (Wood et al, 1990), probably as a result of successive water level reductions, changing trophic status (Battarbee, 1978) and changes in the fish composition (Winfield et al, 1988). Mysis relicta Loven, a potential predator of rotifers and the crustacean zooplankton, is also present in the lake.…”

Section: Study Areamentioning

confidence: 99%

Seasonality, population dynamics and production of planktonic rotifers in Lough Neagh, Northern Ireland

Andrew

Fitzsimons²

1992

Hydrobiologia

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The abundances, population dynamics and production of the rotifer community of Lough Neagh were examined for a three year period. Keratella cochlearis was the most abundant species accounting for over 40% of biomass followed by Polyarthra dolichoptera and Notholca acuminata. The mean standing crop for the rotiferan zooplankton increased in successive years (41, 51, 75 mg dwt m-2) as did production (1037, 1322, 1417 mg dwt m-2 y-'). The seasonal pattern of biomass expression and production varies markedly in different years. Instantaneous birth rates tend to be lower but more consistent for the more abundant species, instantaneous death rates show periods of negative mortality indicating an inadequacy of the model employed but explicable as hatching of resting eggs. K. cochlearis as the most successful species is explained as its perennial appearance and adaptation to the low annual temperature cycle found in the lough. The population succession and the annual occurrence of species differs in each year.

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Section: Study Areamentioning

confidence: 99%

Seasonality, population dynamics and production of planktonic rotifers in Lough Neagh, Northern Ireland

Andrew

Fitzsimons²

1992

Hydrobiologia

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“…Fish populations, particularly Coregonus pollan, Perca fluviatilis, Scardinus erythrophthalmus, and more recently Rutilus rutilus, predate on zooplankton either as adults or juvenile stages. Since the earlier study of Dakin & Latarche (1913), the zooplankton composition has changed from a bosminid dominated to a daphnid dominated zooplankton (Wood et al, 1990).…”

Section: Study Areamentioning

confidence: 99%

“…These chlorophyll values are indicative of high nutrient loading consistent with BattarbeeÕs (1978) description of changing trophic status. Water control measures during the past 150 years, resulting in water level reductions, have affected the littoral regions and marginal development of the lake with consequent effects on the plankton communities (Wood et al, 1990).…”

Section: Study Areamentioning

confidence: 99%

Seasonality of Rotifers and Temperature in Lough Neagh, N. Ireland

Andrew¹,

Andrew²

2005

Hydrobiologia

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Long runs of seasonal rotifer population data allow analysis of seasonal occurrence using mathematical tools. The application of Fourier analysis to a 15 year dataset describes seasonality in simple mathematical terms. This facilitates comparison of population expression with potential population driving variables and provides a basic modelling tool. Results show that annual patterns of occurrence and density have linkages with annual maximum and minimum environmental temperature, although the exact relationships are not clear.

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“…Pseudofossils of cladocerans, and chydorids in particular, have been widely used to reconstruct changing trophic or acid status (Frey 1960;Harmsworth and Whiteside 1968;Whiteside 1970;Boucherle and Züllig 1983;Hofmann 1987;Hann et al 1994;Jeppensen et al 1996;Brodersen et al 1998) and to infer changes in macrophyte and fish communities (Leavitt et al 1989;Stansfield et al 1989;Miskimmin et al 1995). Some Irish lakes have already been the focus of palaeolimnological studies in which cladocerans were used to recon-struct lake history (Murray 1979;Douglas and Murray 1987;Wood et al 1990Wood et al , 1996.…”

Section: Introductionmentioning

confidence: 99%

The use of Members of the Family Chydoridae (Anomopoda, Branchiopoda) as an Indicator of Lake Ecological Quality in Ireland

Eyto¹,

Irvine²,

Free³

2002

Biology & Environment: Proceedings of the Royal Irish Acade

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We sampled chydorids (Branchiopoda, Anomopoda) from 29 Irish lakes between June 1996 and July 1997 in order to assess the usefulness of this group as an indicator of lake ecological quality, as required by the recently published EU Water Framework Directive. The lakes represented a wide range of the physicochemical conditions found in Irish lakes. We identified 31 species of Chydoridae from the lakes and used multivariate analysis to elucidate the relationship between the chydorids and their environment. Groups of lakes were found to have distinct chydorid communities, the structure and composition of which depended on environmental variables such as total phosphorus, total nitrogen, alkalinity, conductivity and lake size. The study highlights the potential value of this group as a biotic indicator of ecological change in Irish lakes.

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Cladoceran remains from the recent sediments of Lough Neagh, Northern Ireland

Cited by 3 publications

References 7 publications

Seasonality, population dynamics and production of planktonic rotifers in Lough Neagh, Northern Ireland

Seasonality, population dynamics and production of planktonic rotifers in Lough Neagh, Northern Ireland

Seasonality of Rotifers and Temperature in Lough Neagh, N. Ireland

The use of Members of the Family Chydoridae (Anomopoda, Branchiopoda) as an Indicator of Lake Ecological Quality in Ireland

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