Species-specific N and P release rates in Daphnia

C. Perez-Martinez; R.D. Gulati

doi:10.1023/A:1003581110687

Species-specific N and P release rates in Daphnia

C. Perez-Martinez
, R.D. Gulati

NIOO - Aquatic Ecology (AqE)

Research output: Contribution to journal/periodical › Article › Scientific › peer-review

7 Citations (Scopus)

Abstract

Bioavailable N and P release rates by juveniles and adults of three Daphnia taxa (D. hyalina, D. galeata and its interspecific hybrids D. hyalina × galeata) were measured to assess the effect of weight and interspecific differences on these rates in Daphnia. Immobilized Scenedesmus obliquus cells were used to estimate the release rates. The specific release rate of N varied between 5.19–5.71 µg N mg C-1 h-1 for juveniles and 3.00–3.42 µg N mg C-1 h-1 for adults. P excretion rate ranged between 1.93–2.37 µg P mg C-1 h-1 for juveniles and 1.00–1.24 µg P mg C-1 h-1 for adults. Our results show that the taxonomic affiliation of Daphnia individuals did not affect their N and P release rates. [KEYWORDS: N and P release rates; Daphnia; Scenedesmus; species-specific effects Life-history variation; phosphorus release; nutrient limitation; nitrogen-excretion; ammonia excretion; planktonic algae; nitrite uptake; food quality; zooplankton; phytoplankton]

Original language	English
Pages (from-to)	147-155
Journal	Hydrobiologia
Volume	391
Issue number	1-3
DOIs	https://doi.org/10.1023/A:1003581110687
Publication status	Published - 1998

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title = "Species-specific N and P release rates in Daphnia",

abstract = "Bioavailable N and P release rates by juveniles and adults of three Daphnia taxa (D. hyalina, D. galeata and its interspecific hybrids D. hyalina × galeata) were measured to assess the effect of weight and interspecific differences on these rates in Daphnia. Immobilized Scenedesmus obliquus cells were used to estimate the release rates. The specific release rate of N varied between 5.19–5.71 µg N mg C-1 h-1 for juveniles and 3.00–3.42 µg N mg C-1 h-1 for adults. P excretion rate ranged between 1.93–2.37 µg P mg C-1 h-1 for juveniles and 1.00–1.24 µg P mg C-1 h-1 for adults. Our results show that the taxonomic affiliation of Daphnia individuals did not affect their N and P release rates. [KEYWORDS: N and P release rates; Daphnia; Scenedesmus; species-specific effects Life-history variation; phosphorus release; nutrient limitation; nitrogen-excretion; ammonia excretion; planktonic algae; nitrite uptake; food quality; zooplankton; phytoplankton]",

author = "C. Perez-Martinez and R.D. Gulati",

note = "Reporting year: 1999 Metis note: 2560; CL; AFW ; AqE; file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs1999/PerezMartinez\_ea\_2560.pdf",

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T1 - Species-specific N and P release rates in Daphnia

AU - Perez-Martinez, C.

AU - Gulati, R.D.

N1 - Reporting year: 1999 Metis note: 2560; CL; AFW ; AqE; file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs1999/PerezMartinez_ea_2560.pdf

PY - 1998

Y1 - 1998

N2 - Bioavailable N and P release rates by juveniles and adults of three Daphnia taxa (D. hyalina, D. galeata and its interspecific hybrids D. hyalina × galeata) were measured to assess the effect of weight and interspecific differences on these rates in Daphnia. Immobilized Scenedesmus obliquus cells were used to estimate the release rates. The specific release rate of N varied between 5.19–5.71 µg N mg C-1 h-1 for juveniles and 3.00–3.42 µg N mg C-1 h-1 for adults. P excretion rate ranged between 1.93–2.37 µg P mg C-1 h-1 for juveniles and 1.00–1.24 µg P mg C-1 h-1 for adults. Our results show that the taxonomic affiliation of Daphnia individuals did not affect their N and P release rates. [KEYWORDS: N and P release rates; Daphnia; Scenedesmus; species-specific effects Life-history variation; phosphorus release; nutrient limitation; nitrogen-excretion; ammonia excretion; planktonic algae; nitrite uptake; food quality; zooplankton; phytoplankton]

AB - Bioavailable N and P release rates by juveniles and adults of three Daphnia taxa (D. hyalina, D. galeata and its interspecific hybrids D. hyalina × galeata) were measured to assess the effect of weight and interspecific differences on these rates in Daphnia. Immobilized Scenedesmus obliquus cells were used to estimate the release rates. The specific release rate of N varied between 5.19–5.71 µg N mg C-1 h-1 for juveniles and 3.00–3.42 µg N mg C-1 h-1 for adults. P excretion rate ranged between 1.93–2.37 µg P mg C-1 h-1 for juveniles and 1.00–1.24 µg P mg C-1 h-1 for adults. Our results show that the taxonomic affiliation of Daphnia individuals did not affect their N and P release rates. [KEYWORDS: N and P release rates; Daphnia; Scenedesmus; species-specific effects Life-history variation; phosphorus release; nutrient limitation; nitrogen-excretion; ammonia excretion; planktonic algae; nitrite uptake; food quality; zooplankton; phytoplankton]

U2 - 10.1023/A:1003581110687

DO - 10.1023/A:1003581110687

M3 - Article

SN - 0018-8158

VL - 391

SP - 147

EP - 155

JO - Hydrobiologia

JF - Hydrobiologia

IS - 1-3

ER -

Species-specific N and P release rates in Daphnia

Abstract

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