Impact of hypoxia on the survival, egg production and population dynamics of Acartia tonsa Dana

Marcus, Nancy H.; Richmond, Courtney; Sedlacek, Christopher J.; Miller, Glenn A.; Oppert, Cris

doi:10.1016/j.jembe.2003.09.016

Cited by 89 publications

(45 citation statements)

References 16 publications

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“…At reduced dissolved oxygen concentrations of 1.5 mL O 2 L −1 , egg production of A. tonsa, but not survival, was significantly reduced as compared to normoxic controls (Marcus et al, 2004). At 0.7 mL O 2 L −1 , both adult survival and egg production were significantly reduced.…”

Section: Reproductionmentioning

confidence: 83%

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Impacts of hypoxia on the structure and processes in pelagic communities (zooplankton, macro-invertebrates and fish)

et al. 2010

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Abstract. Dissolved oxygen (DO) concentration in the water column is an environmental parameter that is crucial for the successful development of many pelagic organisms. Hypoxia tolerance and threshold values are species-and stagespecific and can vary enormously. While some fish species may suffer from oxygen values of less than 3 mL O 2 L −1 through impacted growth, development and behaviour, other organisms such as euphausiids may survive DO levels as low as 0.1 mL O 2 L −1 . A change in the average or the range of DO may have significant impacts on the survival of certain species and hence on the species composition in the ecosystem with consequent changes in trophic pathways and productivity.Evidence for the deleterious effects of oxygen depletion on pelagic species is scarce, particularly in terms of the effect of low oxygen on development, recruitment and patterns of migration and distribution. While planktonic organisms have to cope with variable DOs and exploit adaptive mechanisms, nektonic species may avoid areas of unfavourable DO and develop adapted migration strategies. Planktonic organisms may only be able to escape vertically, above or beneath the Oxygen Minimum Zone (OMZ). In shallow areas only the surface layer can serve as a refuge, but in deep waters many organisms have developed vertical migration strategies to use, pass through and cope with the OMZ.Correspondence to: W. Ekau (wekau@zmt-bremen.de) This paper elucidates the role of DO for different taxa in the pelagic realm and the consequences of low oxygen for foodweb structure and system productivity. We describe processes in two contrasting systems, the semi-enclosed Baltic Sea and the coastal upwelling system of the Benguela Current to demonstrate the consequences of increasing hypoxia on ecosystem functioning and services.

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Section: Reproductionmentioning

confidence: 83%

“…At 0.7 mL O 2 L −1 , both adult survival and egg production were significantly reduced. These results suggest that, besides direct lethal effects of hypoxia, sub-lethal responses such as reduced egg production can have important repercussions on population and community dynamics of marine copepods and food webs (Marcus et al, 2004).…”

Section: Reproductionmentioning

confidence: 91%

Impacts of hypoxia on the structure and processes in pelagic communities (zooplankton, macro-invertebrates and fish)

et al. 2010

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“…8B & 9). However, when collected from high (~30 psu) salinity waters near Apalachicola Bay during summer and fed a diet of mixed dinoflagellates that were grown under nutrient replete conditions, A. tonsa attained an EPR of between 60 and 110 eggs female -1 d -1 (Marcus et al 2004). This EPR is similar to that in lower salinity water and about 10 times greater than the EPR which occurs naturally in higher salinity water (Fig.…”

Section: Egg Production Efficiencymentioning

confidence: 99%

Ecology of Acartia tonsa in Apalachicola Bay, Florida, and implications of river water diversion

Putland¹,

Iverson²

2007

Mar. Ecol. Prog. Ser.

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“…Kimmel et al (2009) showed that the vertical extent and severity of the hypoxic conditions in the water column, are important factors influencing the vertical distribution of zooplankton. Except from causing direct mortality, hypoxia (DO < 2.0ml l -1 ) seriously affects the metabolism, fecundity, growth and population dynamics of zooplanktonic organisms (Marcus et al, 2004), the vertical distribution and the vertical migration patterns of species (Auel & Verheye, 2007;Criales-Hernandez et al, 2008;, as well as the interaction between zooplankton and its predators (Keister et al, 2000). The presence of bottom anoxic layers has been found to limit the available habitat for zooplankton as most organisms tend to avoid these layers and remain restricted to the well oxygenated surface part of the water column (Criales-Hernandez et al, 2008).…”

Section: Zooplanktonmentioning

confidence: 99%

“…Anoxic as well as hypoxic conditions in the water column, have serious negative effects on zooplanktonic organisms because, except for causing direct mortality, they also affect the metabolism, fecundity, growth, vertical migration patterns and distribution of planktonic organisms (Marcus et al, 2004;Auel & Verheye, 2007).…”

Section: Introductionmentioning

confidence: 99%

Zooplankton diversity and distribution in a deep and anoxic Mediterranean coastal lake

Kehayias¹,

Ramfos

Ioannou³

et al. 2013

Medit. Mar. Sci.

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The variation of the smaller size fraction of zooplankton was investigated during a two-year period in a brackish deep and anoxic coastal lake of western Greece (Aitoliko), along with the specific environmental characteristics of this ecosystem. The zooplanktonic community comprised a relatively small number of taxa and it was dominated by brackish-water calanoid copepods (Paracartia latisetosa, Calanipeda aquaedulcis) and in certain periods by rotifers and tintinnids. The zooplankton abundance showed an increase in the warmer period starting from late spring and reached maximum values in July. In the well oxygenated surface layer, temperature was the most important parameter influencing the seasonal cycles of all groups. In contrast, the oxygen depletion a few meters under the surface affected the vertical distribution of most of the zooplankton groups, which were found restricted in the surface layer, especially from spring until autumn. Only the meroplanktonic larvae of polychaetes presented increased proportions in the deeper layers. Salinity has not significantly influenced the zooplanktonic assemblages. The results reveal the degraded status of the Aitoliko basin, where the hypoxic/anoxic layers resulted in a high portion of dead organic material identified as copepod carcasses; they also underline the necessity of monitoring this ecosystem.

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Impact of hypoxia on the survival, egg production and population dynamics of Acartia tonsa Dana

Cited by 89 publications

References 16 publications

Impacts of hypoxia on the structure and processes in pelagic communities (zooplankton, macro-invertebrates and fish)

Impacts of hypoxia on the structure and processes in pelagic communities (zooplankton, macro-invertebrates and fish)

Ecology of Acartia tonsa in Apalachicola Bay, Florida, and implications of river water diversion

Zooplankton diversity and distribution in a deep and anoxic Mediterranean coastal lake

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