First time in Italy. Is the elusive aquatic megadrile Sparganophilus Benham, 1892 (Annelida, Clitellata) accelerating its dispersal in Europe?

Rota, Emilia; Bartoli, Marco; Laini, Alex

doi:10.4081/jlimnol.2014.939

Cited by 8 publications

(19 citation statements)

References 21 publications

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“…One of the most studied responses is that of trophic status (Rodriguez & Reynoldson 2011;Rashid & Pandit 2014), but many other factors, such as water chemistry (either as pollution or acidification), sediment particle size or water flow, and the invasion of alien species (e.g. Friday 1987; Rasmussen & Lindegaard 1988;Jeffries 1991;Stephenson et al 1994;Brodersen et al 1998;Abraham et al 1999;Ilyashuk 1999;Heino 2000;Timm & Möls 2012;Boggero et al 2014;Rota et al 2014), can influence the biological diversity and the abundance of macroinvertebrates, including oligochaetes.…”

Section: Introductionmentioning

confidence: 99%

Oligochaete assemblages of Swiss Alpine lakes

Dumnicka

Steingruber

Colombo

et al. 2014

Italian Journal of Zoology

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The present paper describes the oligochaete assemblages of 12 Swiss Alpine lakes (1700-2500 m above sea level) in Canton Ticino. The lake catchment geology is dominated by gneiss. The scarcity of carbonate rocks leads to a low buffering capacity, increasing the lakes' sensitivity to acidification. Because of their very low phosphorus concentrations, they are defined as ultraoligotrophic. Oligochaetes were identified from kick-samples taken from the outflow and littoral zone of the lakes one to three times per year in 1991-1994, 2003 and 2007, when the lake water chemistry was also characterized. Oligochaete assemblages consisted of 19 species in total, 18 of which were found in the littoral zone, and 10 in the outlets. Amongst them, Cernosvitoviella goodhui Healy, 1975 was recorded in Switzerland for the first time. Principal component analysis (PCA), performed excluding the highly alkaline Lake Bianco (pH = 7.8 and alkalinity = 566 µeq L −1 ) due to its atypical chemical composition, divided the remaining lakes into two groups with different sensitivity to acidity: the first group of four lakes was characterized by a higher average pH (6.4) and alkalinity (32 µeq L −1 ), whilst the second group of seven lakes was characterized by a lower average pH (5.7) and alkalinity (5 µeq L −1). Multivariate analysis performed on data collated from the littoral zone highlighted geo-lithology as a key driver in determining the species distribution among lakes. When applied to the lake outlet data, a similar distinction between acidic and calcareous waters was implied. Precipitation influenced the oligochaete assemblage in the littoral zone. During years with higher annual rainfall, the relative abundance of Enchytraeidae increased, probably because their semi-aquatic nature allows them to colonize the littoral zones that dry out periodically.

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Section: Introductionmentioning

confidence: 99%

Oligochaete assemblages of Swiss Alpine lakes

Dumnicka

Steingruber

Colombo

et al. 2014

Italian Journal of Zoology

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“…Another two species appear endemic to California and Oregon, and immature sparganophilids have been reported from a swampy forest in Guyana (Stacey and Coates 1996, Reynolds 2008). The American origin of Sparganophilidae is confirmed by molecular phylogenetics (Jamieson et al 2002, James and Davidson 2012), which places the family as sister taxon to Komarekionidae, a monotypic earthworm family living in mesic forest soils on the Appalachian Mountains (Rota et al 2014a). …”

Section: General Descriptionmentioning

confidence: 99%

“…Besides England, the occurrence of the family outside of America is limited to France, Switzerland, Germany, Italy (Rota et al 2014a). Many early records of Sparganophilus , both in Europe and America, were originally assigned to distinct species.…”

Section: General Descriptionmentioning

confidence: 99%

“…Many early records of Sparganophilus , both in Europe and America, were originally assigned to distinct species. In the light of the intrapopulational morphological variability documented in S. tamesis , very likely all European records are conspecific (Jamieson 1971, Rota et al 2014a). The vector for the arrival of Sparganophilus worms to European waters were most certainly North American aquatic plants accidentally introduced.…”

Section: General Descriptionmentioning

confidence: 99%

“…The vector for the arrival of Sparganophilus worms to European waters were most certainly North American aquatic plants accidentally introduced. The synergistic interaction between submerged plants (such as Vallisneria ) and Sparganophilus worms has been recently pointed out, as well as the possible reciprocal importance for the survival and spreading of the two organisms even over long distances and particularly under the ongoing climate changes (Rota et al 2014a).…”

Section: General Descriptionmentioning

confidence: 99%

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Fauna Europaea: Annelida - Terrestrial Oligochaeta (Enchytraeidae and Megadrili), Aphanoneura and Polychaeta

Rota¹,

Jong²

2015

BDJ

Self Cite

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Fauna Europaea provides a public web-service with an index of scientific names (including important synonyms) of all living European land and freshwater animals, their geographical distribution at country level (up to the Urals, excluding the Caucasus region), and some additional information. The Fauna Europaea project covers about 230,000 taxonomic names, including 130,000 accepted species and 14,000 accepted subspecies, which is much more than the originally projected number of 100,000 species. This represents a huge effort by more than 400 contributing specialists throughout Europe and is a unique (standard) reference suitable for many users in science, government, industry, nature conservation and education.This paper provides updated information on the taxonomic composition and distribution of the Annelida - terrestrial Oligochaeta (Megadrili and Enchytraeidae), Aphanoneura and Polychaeta, recorded in Europe. Data on 18 families, 11 autochthonous and 7 allochthonous, represented in our continent by a total of 800 species, are reviewed, beginning from their distinctness, phylogenetic status, diversity and global distribution, and following with major recent developments in taxonomic and faunistic research in Europe. A rich list of relevant references is appended. The Fauna Europaea Annelida - terrestrial Oligochaeta data-set, as completed in 2004, will be updated accordingly.

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Benthic N pathways in illuminated and bioturbated sediments studied with network analysis

Magri

Benelli

Bondavalli

et al. 2017

Limnology & Oceanography

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The regulation of benthic nitrogen (N) cycling by multiple interactions among bacteria, macrofauna, and primary producers is poorly understood. We hypothesized that a biodiverse benthic system should better exploit the benthic N‐availability and retain N than a simpler one. Retention occurs by avoiding losses both to the water column via increased recycling and to the atmosphere via decreased N2 fluxes and by limiting energy‐costly processes as N‐fixation. We also hypothesized that primary producer‐bacterial competition is reduced in the presence of macrofauna due to mobilization of refractory N pools. To this purpose, the effects of two bioturbators (the detritivorous Sparganophilus tamesis and the filter‐feeding Corbicula spp.) and two primary producer growth forms (the rooted macrophyte Vallisneria spiralis and microphytobenthos) on benthic N cycling were studied. An array of N‐processes were measured along a complexity gradient (from bare sediments to all combinations of the above mentioned organisms), and experimental outcomes were analyzed via ecological network analysis (ENA). This suite of algorithms, applied to the microscale, revealed differential partitioning of N fluxes among bare sediments (highest denitrification rates), sediments with macrofauna (highest recycling), and sediments with rooted plants (highest N‐fixation). N2 losses and inputs were significantly reduced when all components were represented, and N requirements by primary producers were to a large extent supported by the activity of macrofauna. Ecological interactions in biodiverse benthic systems promoted an efficient exploitation of sedimentary N pools, increased the coupling between recycling and uptake, and maximized N use efficiency at the expenses of losses and imports.

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First time in Italy. Is the elusive aquatic megadrile Sparganophilus Benham, 1892 (Annelida, Clitellata) accelerating its dispersal in Europe?

Abstract: ABSTRACT

Cited by 8 publications

References 21 publications

Oligochaete assemblages of Swiss Alpine lakes

Oligochaete assemblages of Swiss Alpine lakes

Fauna Europaea: Annelida - Terrestrial Oligochaeta (Enchytraeidae and Megadrili), Aphanoneura and Polychaeta

Benthic N pathways in illuminated and bioturbated sediments studied with network analysis

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