Taxonomy, distribution, and ecology of the freshwater bryozoans (Ectoprocta) of eastern Canada

1994 ◽  
Vol 72 (2) ◽  
pp. 339-359 ◽  
Author(s):  
Anthony Ricciardi ◽  
Henry M. Reiswig
Keyword(s):  
Lake Erie ◽  
Eastern Canada ◽  
Freshwater Habitats ◽  
Freshwater Bryozoa ◽  
Distribution And Ecology ◽  
Cristatella Mucedo ◽  
Lophopodella Carteri ◽  
First Time ◽  
Hard Substrates ◽  
Alkaline Waters

The freshwater Bryozoa (Ectoprocta) are one of the most poorly known faunal groups in Canada. A recent survey of 80 freshwater habitats in eastern Canada (from Ontario to Newfoundland) revealed 14 species of bryozoans, representing 56% of described species in North America. The greatest numbers of species and specimens were found in alkaline waters (pH 7.0–9.8) near lake outflows, wherever hard substrates were present. Paludicella articulata, Cristatella mucedo, Fredericella indica, and Plumatella fungosa are among the most frequently encountered, widely distributed, and eurytopic species. Pottsiella erecta and Plumatella fruticosa are rare, and new to eastern Canada. Lophopodella carteri, an exotic Asian species discovered in Lake Erie in the early 1930s, has become firmly established in the lower Ottawa and upper St. Lawrence rivers. Detailed notes on taxonomy, morphology, distribution, and ecology are given for each bryozoan. New limits of tolerance to water temperature, pH, and calcium and magnesium hardness are established for several species. A taxonomic key to the freshwater bryozoans of eastern Canada, including a key to statoblast types, is presented for the first time.

Occurrence and ecology of Lophopodella carteri (Hyatt) and other freshwater Bryozoa in the lower Ottawa River near Montréal, Quebec

1991 ◽  
Vol 69 (5) ◽  
pp. 1401-1404 ◽  
Author(s):  
Anthony Ricciardi ◽  
David J. Lewis
Keyword(s):  
New Records ◽  
Freshwater Sponges ◽  
Chironomid Larvae ◽  
Ottawa River ◽  
Pectinatella Magnifica ◽  
Caddisfly Larvae ◽  
Freshwater Bryozoa ◽  
Cristatella Mucedo ◽  
Lophopodella Carteri ◽  
First Time

Seven species of freshwater Bryozoa (Ectoprocta) were collected from the lower Ottawa River near Montréal, Quebec: Lophopodella carteri (Hyatt), Plumatella repens (Linnaeus), Hyalinella punctata (Hancock), Paludicella articulata (Ehrenberg), Fredericella indica Annandale, Pectinatella magnifica (Leidy), and Cristatella mucedo Cuvier. Lophopodella carteri is reported from Canada for the first time, and this record represents a 300-km northward extension of its known range. Plumatella repens, H. punctata, F. indica, and P. articulata are new records for the province of Quebec. Bryozoan colonies were commonly associated with each other and with other macroinvertebrates, including freshwater sponges, molluscs, turbellarians, chironomid larvae, and caddisfly larvae. Larval caddisflies, Ceraclea (Trichoptera: Leptoceridae), and the microturbellarian Stenostomum (Turbellaria: Catenulida) were predators of living bryozoan colonies.

Freshwater sponges (Porifera, Spongillidae) of eastern Canada: taxonomy, distribution, and ecology

1993 ◽  
Vol 71 (4) ◽  
pp. 665-682 ◽  
Author(s):  
Anthony Ricciardi ◽  
Henry M. Reiswig
Keyword(s):  
North America ◽  
Water Temperature ◽  
Recent Survey ◽  
Eastern Canada ◽  
Freshwater Sponges ◽  
Taxonomic Key ◽  
Number Of Species ◽  
Calcium And Magnesium ◽  
Distribution And Ecology ◽  
First Time

During a recent survey of the freshwater sponges of eastern Canada (from Ontario to Newfoundland), 15 species were recorded, representing approximately 50% of the total number of species known from North America. Radiospongilla crateriformis, Spongilla aspinosa, and Trochospongilla horrida are reported from Canada for the first time. Two problematic species, Corvosporigilla novaeterrae and Spongilla johanseni, are reviewed and their status is revised. Detailed notes on taxonomy, morphology, distribution, and ecology are given. New limits of tolerance with respect to pH, water temperature, and calcium and magnesium concentrations are established for several species. A taxonomic key to the freshwater sponges of eastern Canada is presented.

The first record of Jaapia ochroleuca (Basidiomycota) in the European part of Russia

2013 ◽  
Vol 47 ◽  
pp. 68-73
Author(s):  
S. V. Volobuev
Keyword(s):  
Nature Reserve ◽  
First Record ◽  
European Part ◽  
European Russia ◽  
Taxonomic Position ◽  
Morphological Description ◽  
Microscopic Structure ◽  
European Part Of Russia ◽  
Distribution And Ecology ◽  
First Time

The corticioid basidiomycete Jaapia ochroleuca (Bres.) Nannf. et J. Erikss. is recorded for the first time in the European Russia from the «Bryansky Les» Nature Reserve (Bryansk Region). The taxonomic position of the species is defined briefly. Its morphological description and data on distribution and ecology are provided. The details of microscopic structure of the collected specimen are illustrated.

Lecanactis (Roccellaceae) in Tasmania, with the description of a new saxicolous species and a revised key for the genus in Australia

2021 ◽  
Vol 53 (1) ◽  
pp. 95-101
Author(s):  
Gintaras Kantvilas
Keyword(s):  
New Zealand ◽  
New South ◽  
First Record ◽  
New Taxon ◽  
European Species ◽  
Australian Species ◽  
South Wales ◽  
Distribution And Ecology ◽  
Tasmanian Endemic ◽  
First Time

AbstractThe lichen genus Lecanactis Körb. in Tasmania comprises six species: L. abietina (Ach.) Körb., which is widespread and pan-temperate; L. latispora Egea & Torrente and L. neozelandica Egea & Torrente, both shared with New Zealand and with the former recorded here from the Auckland Islands for the first time; L. mollis (Stirt.) Frisch & Ertz, shared with Victoria and New Zealand; L. aff. dilleniana (Ach.) Körb., a European species recorded provisionally for Tasmania on the basis of several sterile collections; L. scopulicola Kantvilas, which is described here as new to science and apparently a Tasmanian endemic. This new taxon occurs in rocky underhangs and is characterized by a thick, leprose thallus containing schizopeltic acid, and 3-septate ascospores, 19–30 × 4.5–6 μm. Short descriptions and a discussion of distribution and ecology are given for all species. A key for all 11 Australian species of the genus is provided, including L. subfarinosa (C. Knight) Hellb. and L. tibelliana Egea & Torrente, which are recorded for Australia for the first time, and L. platygraphoides (Müll.Arg.) Zahlbr., a first record for New South Wales. Lecanactis spermatospora Egea & Torrente and L. sulphurea Egea & Torrente are also included.

The Middle–Upper Cambrian Transition in Southeastern Newfoundland, Canada

1975 ◽  
Vol 12 (12) ◽  
pp. 2065-2079 ◽  
Author(s):  
Valdemar Poulsen ◽  
Michael M. Anderson
Keyword(s):  
Basal Part ◽  
Eastern Canada ◽  
Middle Cambrian ◽  
Upper Cambrian ◽  
First Time

The Middle-Upper Cambrian transition in southeastern Newfoundland is shown to be very similar to the transition in Scandinavia and in the English Midlands. The late Middle Cambrian Lejopyge laevigata Zone, which is recorded for the first time from eastern Canada, is contained in the basal part of the Elliott Cove Formation and is conformably overlain by the Upper Cambrian Agnostus pisiformis Zone. The following trilobite species from the Lejopyge laevigata Zone at Manuels River and on Random Island are described: Andrarina costata (Angelin), Paradoxides sp., Lejopyge laevigata (Dalman), and Peronopsis insignis (Wallerius).

Gastrotricha from Italian brackish water environments with the description of a new species of Chaetonotus

1999 ◽  
Vol 79 (4) ◽  
pp. 585-592 ◽  
Author(s):  
P. Tongiorgi ◽  
E. Fregni ◽  
M. Balsamo
Keyword(s):  
New Species ◽  
Brackish Water ◽  
Systematic Sampling ◽  
Coastal Lakes ◽  
Brackish Waters ◽  
Freshwater Habitats ◽  
Sampling Programme ◽  
First Time ◽  
River Po ◽  
A New Species

During 1996–1997 a systematic sampling programme was carried out in brackish coastal lakes and lagoons and in the delta of the River Po. In six of the nine collecting locations, 12 species of Gastrotricha were identified. One species, Chaetonotus ichthydioides, is new to science; another three species, the chaetonotidans Heterolepidoderma foliatum and the macrodasyidans Dendrodasys ponticus and Turbanella cf. pontica, and one macrodasyidan genus, Paradasys (P. subterraneus), were found in Italy for the first time. The unusual morphology of some of the species identified shows that Gastrotricha colonized brackish waters from both marine and freshwater habitats.

scholarly journals On the distribution and ecology of a rare land snail, Eostrobilops coreana (Pilsbry, 1927) (Gastropoda: Pulmonata: Strobilopsidae)

2020 ◽  
Vol 24 (1/2) ◽  
pp. 102-110
Author(s):  
Larisa A. Prozorova
Keyword(s):  
Key Words ◽  
Rare Species ◽  
Korean Peninsula ◽  
Land Snail ◽  
Land Snails ◽  
Distribution And Ecology ◽  
First Time

Представлены подробные сведения о четырех местонахождения редкой наземной улитки Eostrobilops coreana (Pilsbry, 1927) на Корейском полуострове и трех в Приморском крае. Впервые показан кальцифильный характер вида. Новое местонахождение вида на п-ове Песчаный (административная территория Владивостока) является наиболее северной точкой распространения рода Eostrobilops Pilsbry, 1927. Ключевые слова: наземные улитки, редкие виды, Приморский край, Красные книги, смешанный хвойно-широколиственный лес, известняки, кальцифильные виды. Data on four localities of the Eostrobilops coreana (Pilsbry, 1927) on Korean Peninsula and Primorye Territory (Russia) are presented. For the first time, calcyphile character of the species is demonstrated. A new revealed site of the species at the Peschany Peninsula (Vladivostok administrative territory) is the most northern locality of the genus Eostrobilops Pilsbry, 1927. Key words: land snails, rare species, Primorye Territory, Red Data Books, mixed coniferous-broadleaved forest, limestone, calcyphile species.

scholarly journals Species Composition of Algal Epiphyton of Pink Lotus (Nymphaea pubescens Willd) Found in Laguna de Bay (Philippines)

2019 ◽  
Vol 17 (3) ◽  
pp. 237-256
Author(s):  
Eldrin De Los Reyes ARGUELLES
Keyword(s):  
Species Composition ◽  
The Philippines ◽  
Freshwater Ecosystems ◽  
Taxonomic Study ◽  
Habitat Distribution ◽  
Epiphytic Algae ◽  
Freshwater Habitats ◽  
Laguna De Bay ◽  
Root Tissues ◽  
First Time

In spite of the fact that epiphytic algae are considered an important component of freshwater ecosystems, our knowledge of their diversity and distribution is still rather poor. Taxonomic study on the composition of epiphytic algae living on submerged leaf and root tissues of macrophyte Nymphaea pubescens Willd, found at Laguna de Bay (Philippines), was conducted. In total, 21 algal taxa were identified: 10 Cyanophyceae, 6 Trebouxiophyceae, and 5 Bacillariophyceae. The taxa described in this study represent 13 orders, 16 families, 18 genera, and 21 species based on the recent combined taxonomical approach. Of these taxa, the occurrence of a rare cyanobacteria, Chroococcus schizodermaticus West, is reported for the first time in the Philippines. One species is also reported here for the first time in the Philippines, based on current taxonomic nomenclature, and this is Cyanothece aeruginosa (Nägeli) Komárek, which is based on the former name of Synechococcus aeruginosus Nägeli. These taxonomic records are considered important basal information in enriching the knowledge about the diversity and habitat distribution of cyanobacteria and microalgae in macrophytes found in freshwater habitats in the Philippines.

Invasion of Lake Erie Offshore Sediments by Dreissena, and Its Ecological Implications

1993 ◽  
Vol 50 (11) ◽  
pp. 2298-2304 ◽  
Author(s):  
R. Dermott ◽  
M. Munawar
Keyword(s):  
Zebra Mussel ◽  
Dreissena Polymorpha ◽  
Lake Erie ◽  
Quagga Mussel ◽  
Central Basin ◽  
Eastern Basin ◽  
Fine Sediments ◽  
Ecological Implications ◽  
Large Populations ◽  
Hard Substrates

Large populations of the exotic rounded (noncarinate) shelled mussel of the genus Dreissena were found to exist on soft sediments collected throughout the central and eastern basins of Lake Erie during July and August 1992. Two different phenotypes were present on fine sediments (<150 μm) in the eastern basin. An elongated white morph was common on the profundal sediments beyond 40 m depth, while the "quagga" mussel was common on sand and sandy silt at depths between 10 and 30 m. Together with the carinated zebra mussel Dreissena polymorpha, which is very abundant on hard substrates in the sublittoral region, at least 80% of Lake Erie's bottom sediments have been invaded by Dreissena. Only that region of the central basin (near Cleveland) which undergoes periodic summer anoxia was not inhabited by this genus.

The Lecanora dispersa group (Lecanoraceae) in Argentina

2011 ◽  
Vol 44 (1) ◽  
pp. 101-114 ◽  
Author(s):  
Iris Nadia DE LA ROSA ◽  
María Inés MESSUTI ◽  
Lucyna ŚLIWA
Keyword(s):  
Secondary Metabolites ◽  
South America ◽  
Related Species ◽  
New Record ◽  
Preliminary Study ◽  
Distribution And Ecology ◽  
First Time

AbstractA preliminary study of the Lecanora dispersa group in Argentina is presented. Two species (L. dispersa and L. hagenii) have been previously recorded and their known distribution is extended, one species (L. semipallida) is a new record from Argentina, and five taxa (L. flowersiana, L. persimilis L. torrida, L. wetmorei and L. zosterae var. zosterae) are reported for the first time from South America. Three species (L. albescens, L. crenulata and L. populicola) previously recorded for Argentina have not been confirmed as occurring in this country. Lecanora aff. fugiens is also treated and compared to the related species. The morphology, anatomy, secondary metabolites, distribution and ecology of the nine studied taxa are described and discussed, and a key to the taxa is included.

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