A method for comparing within-core alpha diversity values from repeated multicorer samplings, shown for abyssal Harpacticoida (Crustacea: Copepoda) from the Angola Basin

Rose, Armin; Seifried, Sybille; Willen, Elke; George, Kai Horst; Veit-Köhler, Gritta; Bröhldick, Karin; Drewes, Jan; Moura, Gisela; Arbizu, Pedro Martínez; Schminke, Horst Kurt

doi:10.1016/j.ode.2004.10.001

Cited by 53 publications

(32 citation statements)

References 84 publications

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“…Tietjen (1989) and Lambshead et al (2002) reported positive associations of deep-sea nematode richness with the presumed (but unmeasured) levels of seafloor POC fluxes in the northwest Atlantic and central equatorial Pacific, respectively. For abyssal Harpacticoida from the Angola Basin, Rose et al (2005) observed a higher diversity at a site with higher sediment organic content, as a proxy of the overlying productivity. Gambi et al (2010) summarized data on meiofaunal diversity from the deep Mediterranean Sea at depths ranging from 200 to 4617 m and reported that the quality and quantity of food sources explained the greatest proportion of the variance of meiofaunal diversity, and the importance of food sources increased with increasing depth.…”

Section: Diversity Measures: Methodological Aspectsmentioning

confidence: 88%

“…Nematode α diversity also increases with water depth, being highest in the bathyal zone (Lambshead & Boucher 2003). For harpacticoids, recent studies have confirmed higher diversity in the deep sea than in shallow marine habitats (Thistle 2001, Seifried 2004, Rose et al 2005, Miljutin et al 2010. Veit-Köhler et al (2010) reported a positive effect of depth on shelf harpacticoid richness for 2 of 3 regions.…”

Section: Diversity Measures: Methodological Aspectsmentioning

confidence: 94%

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Broad-scale patterns in local diversity of marine benthic harpacticoid copepods (Crustacea)

Azovsky¹,

Garlitska²,

Chertoprud³

2012

Mar. Ecol. Prog. Ser.

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The α and β diversity of benthic harpacticoids were estimated using 103 published datasets from all over the world, with depths ranging from the intertidal zone to 5600 m. α diversity (expected number of species per 100 individuals) was correlated with organic matter flux to the bottom, and this effect was depth-dependent, with the correlation being negative from the shallowest waters up to 33 m and positive in deeper waters. α diversity was also positively correlated with depth itself and depended on the sediment properties and duration of study, but showed no latitudinal trend. β diversity (estimated as the slope of the species accumulation curve) was negatively correlated with latitude and positively correlated with the spatial extent and depth range of sampling. The effect of latitude and extent was mainly pronounced for the intertidal zone, whereas the depth range was the most significant factor in the deep waters. Additionally, β diversity was higher on sands and mixed sediments than on silt or mud. Latitude explained 45% of the β diversity variation in the littoral zone, 18% in the upper sublittoral, and less than 5% in deeper zones. Thus, α and β diversity act as independent and spatially uncorrelated components of overall regional diversity, driven by different mechanisms. Variations in β diversity presumably reflect spatial heterogeneity and form the latitudinal gradient in the shallowest waters. Deeper, trophic conditions play the leading role, and thus α diversity contributes the major proportion of the total diversity variance there and is responsible for the bathymetric gradient.KEY WORDS: Harpacticoida · α diversity · β diversity · Latitude · Depth · Productivity Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 460: [63][64][65][66][67][68][69][70][71][72][73][74][75][76][77] 2012 the equator has been observed for some groups, e.g. foraminiferans (Culver & Buzas 2000) or marine macrobenthos (Rex et al. 1993, Gray 2002. Nevertheless, comprehensive meta-analysis does not show any consistent differences between hemispheres, despite some variations among the oceans (Hillebrand 2004). The strength of the gradient varies systematically with body mass across organism groups, generally decreasing or even vanishing for the smallest organisms (Hillebrand & Azovsky 2001, Hillebrand 2004. For macrofauna, latitudinal patterns are not identical, however. Some of regional studies have failed to detect this pattern (e.g. peaks in diversity at midlatitude in both Atlantic and Pacific gastropods, Roy et al. 1998); or even showed regionally opposite trends (Renaud et al. 2009 and references therein). It is unclear whether these differences are caused by regional peculiarities or by the restricted geographical range of stations sampled (Renaud et al. 2009). Furthermore, regional diversity shows consistently stronger and steeper latitudinal gradients than local (α) diversity (Clarke & Lidgard 2000, Hillebrand 2004, thus posing the question of systematic varia...

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Section: Diversity Measures: Methodological Aspectsmentioning

confidence: 88%

Section: Diversity Measures: Methodological Aspectsmentioning

confidence: 94%

Broad-scale patterns in local diversity of marine benthic harpacticoid copepods (Crustacea)

Azovsky¹,

Garlitska²,

Chertoprud³

2012

Mar. Ecol. Prog. Ser.

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“…We identiWed 157 species, 62 genera and 19 families from 860 individuals, which means that a diVerent species is encountered in one out of every Wve individuals. Harpacticoids in the deep sea are characterised by high species diversity and low species dominance (Seifried 2004;Rose et al 2005), and the assemblage in the Porcupine Seabight forms no exception to this. Even more, the value of ES (50) over the complete dataset of the coral degradation zone is 35.3, which is higher than reported values from deep-sea harpacticoid studies at western Atlantic (bathyal sites between Cape Lookout and Bermuda), eastern PaciWc (Fieberling Guyot and San Diego Trough) and western PaciWc (Sagami Bay) sites (Thistle 1978(Thistle , 1998Shimanaga et al 2004; summarised in Shimanaga et al (2004)).…”

Section: Harpacticoid Diversity In the Coral Degradation Zonementioning

confidence: 99%

Diversity and community structure of harpacticoid copepods associated with cold-water coral substrates in the Porcupine Seabight (North-East Atlantic)

et al. 2009

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The inXuence of microhabitat type on the diversity and community structure of the harpacticoid copepod fauna associated with a cold-water coral degradation zone was investigated in the Porcupine Seabight (North-East Atlantic). Three substrate types were distinguished: dead fragments of the cold-water coral Lophelia pertusa, skeletons of the glass sponge Aphrocallistes bocagei and the underlying sediment. At the family level, it appears that coral fragments and underlying sediment do not harbour distinctly diVerent assemblages, with Ectinosomatidae, Ameiridae, Pseudotachidiidae, Argestidae and Miraciidae as most abundant. Conclusions on assemblage structure and diversity of the sponge skeletons are limited as only two samples were available. Similarity analysis at species level showed a strong variation in the sediment samples, which did not harbour a distinctly diVerent assemblage in opposition to the coral and sponge samples. Several factors (sediment inWll on the hard substrates, mobility of the copepods, limited sample sizes) are proposed to explain this apparent lack of a distinct diVerence between the microhabitats. Coral fragments and sediment were both characterised by high species diversity and low species dominance, which might indicate that copepod diversity is not substantially inXuenced by hydrodynamical stress. The additive partitioning of species diversity showed that by adding locations species richness was greatly enhanced. The harpacticoid community in the cold-water coral degradation zone is highly diverse and includes 157 species, 62 genera and 19 families. Information from neighbouring soft-bottom regions is necessary to assess whether total species diversity is increased by the presence of these complex habitatproviding substrates.

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“…1). For methodology and sample treatment, see Rose et al (2005). The copepods were mounted on separate slides using glycerol as the embedding medium.…”

Section: Methodsmentioning

confidence: 99%

A new species of Eurycletodes Sars, 1909 (Copepoda: Harpacticoida: Argestidae) from the southern hemisphere including remarks on the phylogeny of the genus and its subgenera

Menzel

2010

Helgol Mar Res

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This paper deals with taxonomy and phylogenetics of the genus Eurycletodes Sars, 1909 (Copepoda: Harpacticoida: Argestidae). Samples, collected from the southeast Atlantic on board RV ''Meteor'' during the cruises DIVA-1 (M48/1) and DIVA-2 (M63/2), contain specimens of Eurycletodes. Eurycletodes is characterized as a monophylum by A1 segments III ? IV fused, basal seta of md palp lost, exp of md palp reduced to 1 seta or completely lost. Similarly, the subgenera Eurycletodes (Eurycletodes) and Eurycletodes (Oligocletodes) are characterized as monophyletic by the loss of the inner seta on P1 exp2 (apomorphic to E. (E.)) and the absence of the inner seta on P5 endopodal lobe (apomorphic to E. (O.)). Eurycletodes profundus is renamed as E. (O.) profundus. Eurycletodes ephippiger is the only species of the genus without subgeneric designation. Eurycletodes (O.) diva sp. nov. is described. The new species differs from described species of the genus by a larger body size, P5 endopodal lobe only slightly protruding, last segment of A1 with 2 outer setae, furcal rami elongated between setae VII and IV. The occurrence of 2 specimens of Eurycletodes (O.) diva sp. nov. at 2 sites separated by the Walvis Ridge supports the hypothesis that geographic obstacles do not prevent harpacticoid copepods from spreading in the deep sea.

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A method for comparing within-core alpha diversity values from repeated multicorer samplings, shown for abyssal Harpacticoida (Crustacea: Copepoda) from the Angola Basin

Cited by 53 publications

References 84 publications

Broad-scale patterns in local diversity of marine benthic harpacticoid copepods (Crustacea)

Broad-scale patterns in local diversity of marine benthic harpacticoid copepods (Crustacea)

Diversity and community structure of harpacticoid copepods associated with cold-water coral substrates in the Porcupine Seabight (North-East Atlantic)

A new species of Eurycletodes Sars, 1909 (Copepoda: Harpacticoida: Argestidae) from the southern hemisphere including remarks on the phylogeny of the genus and its subgenera

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