Calcium content of crustacean zooplankton and its potential role in species distribution

Wærvågen, Svein Birger; Rukke, Nina Alstad; Hessen, Dag O.

doi:10.1046/j.1365-2427.2002.00934.x

Cited by 90 publications

(108 citation statements)

References 45 publications

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“…The species disappeared in the 1960s, but reappeared in small numbers in the 1980s after a significant reduction in algal biomass and primary production (Rognerud & Kjellberg 1990). Ambient Ca concentration has been shown as a key factor in regulating the distribution of H. gibberum and daphnids (Hessen et al 1995b;Waervågen et al 2002). Because of their high Ca demands, species of Daphnia are supposed to be competitively disadvantaged in softwater lakes relative to less Ca-demanding species like H. gibberum.…”

Section: Discussionmentioning

confidence: 99%

Long-term changes of the crustacean zooplankton community in Lake Mjøsa, the largest lake in Norway

Løvik¹,

Kjellberg²

2003

J Limnol

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Section: Discussionmentioning

confidence: 99%

Long-term changes of the crustacean zooplankton community in Lake Mjøsa, the largest lake in Norway

Løvik¹,

Kjellberg²

2003

J Limnol

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“…Among the various freshwater zooplankton species, Daphnia spp. are at the high end in terms of both Ca and P contents (Andersen & Hessen 1991, Hessen & Lyche 1991, Waervågen et al 2002, Jeziorski & Yan 2006. The high Ca and P contents suggest high demand, which may render daphnids more susceptible to a limitation of Ca and P availability.…”

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confidence: 99%

Calcium influence on phosphorus regulation in Daphnia magna: implications for phosphorus cycling

Tan¹,

Wang

2009

Aquat. Biol.

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We examined the influence of environmental calcium on phosphorus biokinetics and regulation in Daphnia magna. When the Ca concentration in culturing media increased from 0.5 to 200 mg l -1 , the specific P content of D. magna feeding on P-sufficient algae decreased significantly from 1.43 to 1.05% of dry weight. There was a significant negative relationship between the specific Ca and P contents (% dry wt) of daphnids. However, measured biokinetic parameters, including the assimilation efficiency (AE) of dietary P, the weight-specific ingestion rate (IR), the uptake of inorganic P from water, and the efflux rate constant (k e ) of P, were similar over the wide range of Ca concentrations, with some exceptions at the lowest Ca level (0.5 mg l -1 ). Diet was the dominant source of P for daphnids, and only 1 to 2% of P was incorporated from water, based on the biokinetic calculation. With the elevation of the Ca level from 0.5 to 200 mg l -1 , the proportion of P lost through molting by D. magna feeding on P-sufficient diets increased 2.5-fold, whereas the dissolved release decreased 1.9-fold. P released into the dissolved phase is readily re-utilized by primary producers, while P contained within the shed molts sinks out of the epilimnion and becomes at least temporarily unavailable to primary producers; thus, the effects of Ca on molting and dissolved release have significant implications for P cycling in freshwater lakes. Our results suggest that the availability of P to primary producers can be reduced by sedimentation of P-rich daphnid molts in high-Ca lakes, and Ca concentration in the water needs to be considered in studying the stoichiometric regulation of P in freshwater cladocerans. KEY WORDS: Phosphorus regulation · Phosphorus cycling · Phosphorus biokinetics · Effects of calcium · Daphnia magna Resale or republication not permitted without written consent of the publisherThe relative importance of different routes of phosphorus loss from Daphnia magna (via excretion, reproduction and molting) is affected by the calcium level in the water. Photo: Ke Pan OPEN PEN ACCESS CCESSAquat Biol 5: [1][2][3][4][5][6][7][8][9][10][11] 2009 of P is distributed within the carapace, possibly bound with Ca. Sterner et al. (1993) found that D. obtusa on a P-deficient diet has problems in molting. Shedding molts accounts for ~70 and ~50% of P loss from juvenile and adult D. magna over a 3 to 4 d period, respectively (He & Wang 2007). The link between Ca and P in D. magna is also indicated by the crystalline calcium phosphate composition of the shell of its ephippia (Kawasaki et al. 2004). Ca levels in the water considerably affect the calcification of the carapace of daphnids (Alstad et al. 1999) and, thus, their total Ca content (Jeziorski & Yan 2006, Tan & Wang 2008. It is therefore tempting to ask whether the content and distribution of P in daphnids is also affected by the aqueous Ca level, considering the close association of these 2 elements in these organisms. Among the various freshwater zooplankton s...

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“…The presence of direct and indirect associations of some species with conductivity, total dissolved solids and pH would probably be due to the importance of calcium concentrations for crustaceans. Some of these groups have high calcium requirements for their shells, and are therefore not found under acid pH conditions (Bos et al, 1996;Alstad et al, 1999;Waervagen et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Crustacean communities in coastal ephemeral pools in the Araucanía region (38° S, Chile)

Ríos-Escalante

Acevedo

2016

Braz. J. Biol.

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The fauna communities of ephemeral pools in southern Chile are characterized by heterogeneity of crustacean taxa; nevertheless, no detailed studies exist of their community structure. The aim of the present study was to analyze the crustacean community structure in two groups of ephemeral pools (Puaucho and Nigue pools) in the coastal zone of the Araucanía region. A correlation matrix was made by species abundance against temperature, conductivity, pH and total dissolved solids. In a second step, a null model for species co-occurrence was applied to the total data and to each group. The results for total data revealed a significant direct relation between the abundance of H. costera, C. dubia and Mesocyclops. For the Puaucho pools, the same results were found together with direct associations with total dissolved solids, conductivity and pH. Finally, different results were found for the Nigue pools, with no clear significant associations, either direct or indirect, between the abundance of different crustacean taxa and abiotic parameters. These results were supported by the co-occurrence null model analysis, which revealed the presence of regulator factors for the total data, and for each of the two groups. Ecological topics are discussed with emphasis on meta-community dynamics.Keywords: cladocerans, copepods, ostracods, amphipods, communities. Comunidades de crustáceos em lagoas efêmeras costeiras na região de Araucanía (38° S, Chile) ResumoAs comunidades faunísticas das lagoas efêmeras do sul do Chile são caracterizadas pela heterogeneidade dos seus táxons. Entretanto, estudos detalhados da sua estrutura de comunidade ainda não existem. O objetivo do presente estudo foi analisar a estrutura da comunidade de crustáceos em dois grupos de lagoas efêmeras (Puaucho e Nigue) na zona costeira da região de Araucanía. A matriz de correlação foi feita com a abundância das espécies em função da temperatura, condutividade, pH e sólidos totais dissolvidos. Num segundo passo, um modelo nulo para as espécies de coocorrência foi aplicado aos dados totais e para cada grupo. Os resultados para os dados totais revelaram uma relação direta e significativa entre a abundância de H. costera, C. dubia e Mesocyclops. Para as lagoas Puaucho, os mesmos resultados foram encontrados, juntamente com associações diretas com sólidos totais dissolvidos, condutividade e pH. Finalmente, diferentes resultados foram encontrados para as lagoas Nigue, sem associações significativas claras, diretas ou indiretas entre a abundância de diferentes táxons de crustáceos e parâmetros abióticos. Estes resultados foram suportados pela análise de modelo de coocorrência nula, a qual revelou a presença de fatores reguladores para o total de dados, e para cada um dos dois grupos. Temas ecológicos são discutidos com ênfase na dinâmica de meta-comunidade.

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Calcium content of crustacean zooplankton and its potential role in species distribution

Cited by 90 publications

References 45 publications

Long-term changes of the crustacean zooplankton community in Lake Mjøsa, the largest lake in Norway

Long-term changes of the crustacean zooplankton community in Lake Mjøsa, the largest lake in Norway

Calcium influence on phosphorus regulation in Daphnia magna: implications for phosphorus cycling

Crustacean communities in coastal ephemeral pools in the Araucanía region (38° S, Chile)

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