Case history and persistence of the non-indigenous diatom <i>Coscinodiscus wailesii</i> in the north-east Atlantic

Edwards, Martin; John, A.W.G.; Johns, DG; Reid, Philip C.

doi:10.1017/s0025315401003654

Cited by 72 publications

(40 citation statements)

References 16 publications

(25 reference statements)

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“…This volume of traffic, much of it international in origin or destination, has increased the potential for transport of non-indigenous marine organisms in ballast water. Successful invasions by non-indigenous phytoplankton species include Odontella sinensis (1908) and Coscinodiscus wailesii (1977) into the North Sea (Nehring 1998;Edwards et al 2001a), both of which have established themselves successfully into the phytoplankton community and are recorded regularly in the CPR survey. The introduction of zooplankton into the North Sea by ballast water is not so apparent, although work by Gollasch et al (2000) has shown that not only can certain zooplanktonic organisms survive transport, but actually flourish in ballast water.…”

Section: Discussionmentioning

confidence: 99%

Increasing prevalence of the marine cladoceran Penilia avirostris (Dana, 1852) in the North Sea

et al. 2005

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Rising sea surface temperatures in the North Sea have had consequential effects on not only indigenous plankton species, but also on the possibility of successful colonisation of the area by invasive plankton species. Previous studies have noted the introduction and integration into the plankton community of various phytoplankton species, but establishment of zooplankton organisms in the North Sea is less well-documented. Examining continuous plankton recorder (CPR) survey data and zooplankton results from the Helgoland Roads study, the autumn of 1999 witnessed the occurrence of the marine cladoceran Penilia avirostris in large numbers in the North Sea. The rapid appearance of the species corresponded with exceptionally warm sea surface temperatures (SSTs). Since 1999, the species has become a regular feature of the autumnal zooplankton community of the North Sea. In 2002 and 2003, the species occurred in greater abundance than recorded before. It is suggested that increased autumn SSTs have proved favourable to P. avirostris, with warmer conditions contributing to the success of the species' resting eggs and aiding colonisation.

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Section: Discussionmentioning

confidence: 99%

Increasing prevalence of the marine cladoceran Penilia avirostris (Dana, 1852) in the North Sea

et al. 2005

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“…Other common indices or attributes of the phytoplankton population that have been used in ecological assessments include bulk measurements of biomass and abundance (OSPAR, 2003;CSTT, 1994CSTT, , 1997, taxon diversity (Karydis and Tsirtsis, 1996), seasonal succession (Hallegraeff and Reid, 1986;Belin et al, 1995;Gailhard et al, 2002) and indicator species (Edwards et al, 2001;Paerl et al, 2003). Phytoplankton biomass has typically been used as indicators of nutrient enrichment (CSTT, 1997;Malcolm et al, 2002;Gowen et al, 1992;Painting et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Establishing boundary classes for the classification of UK marine waters using phytoplankton communities

Devlin

Best

Coates

et al. 2007

Marine Pollution Bulletin

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This paper presents a description of three of the proposed phytoplankton indices under investigation as part of a classification framework for UK and ROI marine waters. The three indices proposed for the classification process are (i) phytoplankton biomass measured as chlorophyll, (ii) the frequency of elevated phytoplankton counts measuring individual species and total cell counts and (iii) Seasonal progression of phytoplankton functional groups through the year. Phytoplankton biomass is calculated by a 90th percentile measurement of chlorophyll over the growing season (April to September) compared to a predetermined reference value. Calculation of functional groups and cell counts are taken as proportional counts derived from the presence of the indicator species or group as compared to the total phytoplankton count. Initial boundary conditions for the assessment of high/good status were tested for each index. Chlorophyll reference conditions were taken from thresholds developed for previous EU directives with the setting of offshore concentrations as a reference condition. Thresholds for elevated counts of phytoplankton taxa were taken from previous EU assessments describing counts that could be impact negatively on the environment. Reference seasonal growth curves are established using phytoplankton counts from ''high status'' waterbodies. To test the preliminary boundaries for each index, a risk assessment integrating nutrient enrichment and susceptibility for coastal and transitional waters was carried out to identify WFD waterbodies in England and Wales at different levels of risk. Waterbodies assessed as having low or medium risk from nutrient enrichment were identified as type 1 and type 2 waterbodies, and waterbodies assessed as high risk were identified as type 3 waterbodies. Phytoplankton data was extracted from the risk assigned waterbodies and applied to each phytoplankton index to test the robustness of the preliminary classification ranges for each phytoplankton index.

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“…Some studies have focussed on diel vertical migration of calanoid copepods , Hays 1995, 1996, Hirst & Batten 1998, spatial and temporal changes in the diversity of decapod crustacean larvae or calanoid copepods (Lindley 1998, Beaugrand et al 2000, Beaugrand 2001). Monitoring of non-indigenous species (Edwards et al 2001) and unusual events (Lindley et al 1990, Edwards et al 1999) have been undertaken as well. The CPR data have led to a better understanding of the ecology and functioning of North Atlantic ecosystems.…”

Section: Introductionmentioning

confidence: 99%

I. Introduction and methodology

Beaugrand¹

2004

Mar. Ecol. Prog. Ser.

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Case history and persistence of the non-indigenous diatom Coscinodiscus wailesii in the north-east Atlantic

Cited by 72 publications

References 16 publications

Increasing prevalence of the marine cladoceran Penilia avirostris (Dana, 1852) in the North Sea

Increasing prevalence of the marine cladoceran Penilia avirostris (Dana, 1852) in the North Sea

Establishing boundary classes for the classification of UK marine waters using phytoplankton communities

I. Introduction and methodology

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