Testing for nematode–granulometry relationships

Fonseca, Gustavo; Maria, Tatiana F.; Kandratavicius, Noelia; Venekey, Virág; Gheller, Paula Foltran; Gallucci, Fabiane

doi:10.1007/s12526-014-0241-4

Cited by 22 publications

(11 citation statements)

References 31 publications

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“…Guerrini et al , 1998; Cibic et al , 2012; Boufahja et al , 2014; Semprucci et al , 2014a, 2016). Contrary to the general trends reported in literature (Danovaro et al , 2004; Semprucci et al , 2010; Fonseca et al , 2014), the stations characterized by the finest sediments (S6 and S7) showed the lowest meiofaunal abundances. Thus, although OM deposited in the sediments potentially has nutritional value for benthic consumers (Neira et al , 2001), all the meiofaunal major taxa appeared negatively affected by it.…”

Section: Discussioncontrasting

confidence: 77%

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Environmental quality assessment of El Bibane lagoon (Tunisia) using taxonomic and functional diversity of meiofauna and nematodes

et al. 2016

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The lagoon of El Bibane (Tunisia) is a Mediterranean coastal area that is affected by an increasing human impact. Thus, an estimation of its biodiversity and an ecological quality assessment are very urgent. This study investigates the meiofaunal and nematode communities of the El Bibane lagoon both from a taxonomic and a functional point of view. Nematodes were the dominant group as is common in brackish water systems. The nematode community was made up of 62 genera in 22 families. Xyalidae, Chromadoridae and Cyatholaimidae were the richest and most abundant families. The taxonomic composition and biodiversity of nematodes were comparable to those found in other European and Mediterranean transitional areas. Both meiofauna and nematodes showed a clear subdivision between marginal and central areas. The central stations, represented by fine sediments and higher amounts of organic carbon, seemed to be characterized by low meiofaunal densities, nematode diversity and a strong dominance of 1B and 2B trophic guilds. These trends could be related not only to the grain size and organic load, but also to a possible influence of tidal currents that can transport pollutants in the central area of the lagoon coming from the adjacent coastal areas. Shannon diversity and life strategies are not always in agreement in defining the ecological quality, but an overall worse ecological quality was detected especially at S6. The results of this study are an important starting point for the future monitoring of the potential and actual human impact on the El Bibane area over time.

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Section: Discussioncontrasting

confidence: 77%

“…A strict relation between coarse sands and these two latter genera is, in fact, reported by several authors (e.g. Gheskiere et al, 2005;Fonseca et al, 2014).…”

Section: Discussionsupporting

confidence: 64%

Environmental quality assessment of El Bibane lagoon (Tunisia) using taxonomic and functional diversity of meiofauna and nematodes

et al. 2016

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“…In the context of marine ecosystems, meiobenthic habitats possess complex, dynamic interactions that are intricately combined and influenced by numerous abiotic factors 7 . The structure of the sediment is one of the main meiobenthic abiotic parameters, performing a leading role in meiobenthic ecology since its features influence the degree of accessibility of meiofaunal organisms 8,9 .…”

mentioning

confidence: 99%

Does sediment composition sort kinorhynch communities? An ecomorphological approach through geometric morphometrics

Cepeda

Trigo

Pardos

et al. 2020

Sci Rep

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ecomorphology studies the relationship between organisms' morphology and environment features. to better understand whether the shape of the body and the appendages involved in the movement is correlated to sediment composition in meiofaunal organisms, we study the evolved morphological adaptations to environment in selected taxa of the phylum Kinorhyncha: the allomalorhagid families Dracoderidae and pycnophyidae, and the cyclorhagid genus echinoderes. the selected taxa include the most diverse groups of Kinorhyncha worldwide, representing the 75.5% of the total phylum diversity. Widened, plump bodies and lateral terminal spines may be adaptive for species living in coarse, more heterogeneous sediments, as they could maintain a more powerful musculature to actively displace the sediment grains applying a greater force. conversely, slender, vermiform bodies and lateral terminal spines would represent an adaptation of species inhabiting fine, more homogeneous sediments where there would not be much need to exert a high force to displace the sediment particles, and a more vermiform shape would even favour the burrowing of the animal through the smaller interstices. the studied kinorhynch taxa would also be adapted to the higher velocity of the seawater and the intense erosion and transportation of heterogeneous sediments by possessing more robust bodies, avoiding getting laid off substratum under these conditions. These findings provide evolutionary evidence that body shape in the studied kinorhynch groups is adapted to environment.

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“…Two studies have an experimental design. Fonseca et al (2014) test specifically whether nematode species richness increases with sediment mean grain size. They reject this hypothesis and show that along the sediment spectrum, each genus has a distinct optimum distribution at a relative narrow grain size.…”

Section: Ecologymentioning

confidence: 99%

Editorial: diversity of marine meiofauna on the coast of Brazil

2014

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After a first bout of primarily taxonomical effort, meiofauna studies in Brazilian waters remained virtually neglected until the 1990s. At the end of the last century, taxonomical and ecological studies on meiofauna taxa were again published regularly, especially for Nematoda and Copepoda. In this issue, 18 new species are described and ten species are redescribed from seven Phyla. The five ecological articles cover the spatial distribution of forams and amoeba in a lagunar system, the meiofauna associated with biogenic structures, the relationship between nematodes and granulometry, and the response of sandy-beach meiofauna to a natural, shortterm pulse of diatoms. All these contributions show the potential of the Brazilian coast for revealing new species and testing small to large-scale hypotheses about ecological processes.

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Testing for nematode–granulometry relationships

Cited by 22 publications

References 31 publications

Environmental quality assessment of El Bibane lagoon (Tunisia) using taxonomic and functional diversity of meiofauna and nematodes

Environmental quality assessment of El Bibane lagoon (Tunisia) using taxonomic and functional diversity of meiofauna and nematodes

Does sediment composition sort kinorhynch communities? An ecomorphological approach through geometric morphometrics

Editorial: diversity of marine meiofauna on the coast of Brazil

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