Results 21 to 30 of about 2,600 (184)

Drawida karatala, a new species of earthworm (Clitellata, Moniligastridae) from the Western Ghats of India [PDF]

Opuscula Zoologica Instituti Zoosystematici et Oecologici Universitatis Budapestinensis
A new moniligastrid earthworm Drawida karatala Narayanan, Paliwal & Julka, sp. nov., is described based on specimens collected from the Western Ghats biodiversity hotspot in South-western India.
Narayanan, Sasankan Prasanth , Paliwal, Rahul, Sylas, Variyettel Paulose , Thomas, Ambattu Paili , Julka, Jatinder Mohan   +4 more
doaj   +1 more source

Does richness of Oligochaeta (Annelida) follows a linear distribution with habitat structural heterogeneity in aquatic sediments?

Journal of Limnology, 2014
Sediment of aquatic environments supports several local communities, among them aquatic invertebrates. Habitat structural heterogeneity in sediments of aquatic ecosystems is related to a number of factors, including variability in the particle size of ...
Flávio H. Ragonha, Alice M. Takeda
doaj   +1 more source

New earthworm records from several Indian Ocean islands (Clitellata, Megadrili) [PDF]

Opuscula Zoologica Instituti Zoosystematici et Oecologici Universitatis Budapestinensis, 2019
Elaboration of the earthworm material collected on the Seychelles, Mauritius, Réunion, Mayotte and Sri Lanka islands resulted in recording 20 species altogether. Among them, the ocnerodrilid Maheina braueri (Michaelsen, 1897) endemic to Mahé (Seychelles)
Szederjesi, Tímea, Pavlíček, Tomás, Csuzdi, Csaba   +2 more
doaj   +1 more source

Potential Impacts of Low Flows on Fish Foodscapes and Production in a Braided River

River Research and Applications, EarlyView.
ABSTRACT Changes in river discharge affect the physical composition and connectivity of habitats which, in turn, may shape the spatial distribution of fish food abundance, accessibility and quality—the ‘foodscape’—of river ecosystems. However, the influence of river flows on fish foodscapes has received very little attention from scientists. We studied
Rick J. Stoffels, Richard S. A. White, Gergely T. Torok, Richard J. Measures, Kristy L. Hogsden, Alex F. Rose, Paul W. Lambert, Jaret P. Bilewitch, S. Elizabeth Graham, Lisa Smith, Amber R. Brooks, Brian J. Smith   +11 more
wiley   +1 more source

On the origin of the Hirudinea and the demise of the Oligochaeta [PDF]

Proceedings of the Royal Society of London. Series B: Biological Sciences, 2001
The phylogenetic relationships of the Clitellata were investigated with a data set of published and new complete 18S rRNA gene sequences of 51 species representing 41 families. Sequences were aligned on the basis of a secondary structure model and analysed with maximum parsimony and maximum likelihood.
openaire   +2 more sources

Subterranean aquatic Oligochaeta [PDF]

Freshwater Biology, 2009
Summary1. Aquatic oligochaetes appear to be pre‐adapted to live in the subterranean environment. However, in the absence of genuine troglomorphic characters, the stygobiotic status of groundwater oligochaetes can currently be inferred only from their exclusive presence in the subterranean environment.2.
Creuzé Des Châtelliers, Michel, Juget, J., Lafont, M., Martin, P.   +3 more
openaire   +2 more sources

Lessons Learnt From Long‐Term Monitoring of River Restoration in an English Chalk Stream

River Research and Applications, EarlyView.
ABSTRACT River restoration can be difficult to evaluate due to insufficient monitoring over timescales too short to adequately capture physical and ecological response. To better understand restoration outcomes, this study quantified changes in physical habitat (depth, velocity, substrate composition) and macroinvertebrates at two restoration projects ...
Lewis A. Dolman, Andrew S. Vowles, Paul S. Kemp   +2 more
wiley   +1 more source

Effects of a native and a non-native macrophyte species of Hydrocharitaceae on Chironomidae and Oligochaeta assemblages structure doi: 10.4025/actascibiolsci.v35i3.10855

Acta Scientiarum: Biological Sciences, 2013
This study investigated the structure of the Oligochaeta and Chironomidae assemblages associated with monospecific stands of two submerged macrophyte species: Egeria najas and Hydrilla verticillata.
Rômulo Diego de Lima Behrend, Mariana Carolina Teixeira, Sue Ellen Prata Fernandes, Janielly Carvalho Camargo, Gisele Cristina Rosin, Alice Michiyo Takeda   +5 more
doaj   +1 more source

Holocene shoreline displacement and the impact of the Storegga tsunami on Hinnøya, northern Norway

Boreas, EarlyView.
The Holocene relative sea‐level (RSL) history of Norway's largest island, Hinnøya, has been investigated in detail, using sediment records from 25 isolation basins. The sediments were analysed for macrofossil and phytoplankton content, which served as the basis for identifying marine–lacustrine transitions, that is isolation contacts. Terrestrial plant
Anders Romundset, Kristian Vasskog, Martin Buran, Svein Olaf Dahl, Fredrik Høgaas, Mara Sternberg   +5 more
wiley   +1 more source

Spatial distribution of aquatic Oligochaeta in Ilha Grande National Park, Brazil - doi: 10.4025/actascibiolsci.v35i1.10768

Acta Scientiarum: Biological Sciences, 2012
Ilha Grande National Park is an important conservation unit localized in the Southern part of the upper Paraná river floodplain (Brazil) that includes diverse aquatic environments.
Flávio Henrique Ragonha, Josiane Barros Chiaramonte, Hélio Martins Fontes Junior, Eduardo Ribeiro da Cunha, Evanilde Benedito, Alice Michiyo Takeda   +5 more
doaj   +1 more source