scholarly journals A revision of Annularia and Asterophyllites species from the lower Westphalian (Middle Pennsylvanian) of the Maritime Provinces of Canada

2017 ◽  
Vol 53 ◽  
pp. 017-062 ◽  
Author(s):  
Carmen Álvarez-Vázquez ◽  
Robert H. Wagner
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Western Europe ◽  
Maritime Provinces ◽  
Geographic Ranges ◽  
European Literature ◽  
Scant Attention ◽  
Identical Composition

As part of a larger project to revise the systematics of lower Westphalian floras of Nova Scotia and New Brunswick, the sphenopsid taxa are presently reviewed. We recognize 15 species, of which one, Annularia stopesiae, is new. Detailed synonymy lists allow a refinement of the stratigraphic and geographic ranges of these species. Scant attention has been paid previously to Canadian species in the European literature. For example, Annularia latifolia was described later from Europe as Annularia jongmansii. The identical composition of Westphalian floras from Canada and western Europe is striking.

scholarly journals Filicopsida from the lower Westphalian (Middle Pennsylvanian) of Nova Scotia and New Brunswick, Maritime Provinces, Canada

2019 ◽  
pp. 001-055
Author(s):  
Carmen Álvarez-Vázquez
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Geographic Distribution ◽  
Western Europe ◽  
Taxonomic Revision ◽  
Detailed Examination ◽  
British Isles ◽  
Maritime Provinces ◽  
Geological Museum ◽  
The Usa

This paper presents a taxonomic revision of filicopsid taxa from the lower to middle Westphalian strata of Nova Scotia and New Brunswick, Maritime Provinces of Canada. Most of the material represents sporadic historical collecting by Geological Survey of Canada (GSC) personnel, and specimens are in the GSC collections in Ottawa. Additional specimens are in the New Brunswick Museum at Saint John, the Fundy Geological Museum at Parrsboro, and the Joggins Fossil Institute at Joggins. Two specimens from outside Canada clarify specific characteristics. The revision involved the detailed examination of 20 adpression (mainly impression) taxa, of which one, Germera brousmicheae, is new. Detailed synonymy lists, with particular focus on records from Canada and the USA, facilitate a refinement of the stratigraphic and geographic distribution of these species. Most of the taxa from the Maritimes are the same as those from other parts of the paleoequatorial belt of Pennsylvanian times. The Maritimes record of filicopsid taxa closely resembles the filicopsid floras of western Europe, most notably the British Isles.

scholarly journals Alethopteris and Neuralethopteris from the lower Westphalian (Middle Pennsylvanian) of Nova Scotia and New Brunswick, Maritime Provinces, Canada

2020 ◽  
Vol 56 ◽  
pp. 111-145
Author(s):  
Carmen Álvarez-Vázquez
Keyword(s):  
United States ◽  
Nova Scotia ◽  
New Brunswick ◽  
Western Europe ◽  
The United States ◽  
Maritime Provinces ◽  
Eastern Canada ◽  
Systematic Revision ◽  
Insufficient Attention ◽  
The North

A systematic revision of Alethopteris and Neuralethopteris from upper Namurian and lower Westphalian (Middle Pennsylvanian) strata of Nova Scotia and New Brunswick, eastern Canada, has demonstrated the presence of eight species: Alethopteris bertrandii, Alethopteris decurrens, Alethopteris cf. havlenae, Alethopteris urophylla, Alethopteris cf. valida, Neuralethopteris pocahontas, Neuralethopteris schlehanii and Neuralethopteris smithsii. Restudy of the Canadian material has led to new illustrations, observations and refined descriptions of these species. Detailed synonymies focus on records from Canada and the United States. As with other groups reviewed in earlier articles in this series, it is clear that insufficient attention has been paid to material reposited in Canadian institutions in the European literature. The present study emphasizes the similarity of the North American flora with that of western Europe, especially through the synonymies.

Establishing past environmental conditions and tracking long-term environmental change in the Canadian Maritime provinces using lake sediments

2013 ◽  
Vol 21 (1) ◽  
pp. 15-27 ◽  
Author(s):  
Jennifer B. Korosi ◽  
Brian K. Ginn ◽  
Brian F. Cumming ◽  
John P. Smol
Keyword(s):  
Nova Scotia ◽  
Surface Water ◽  
Environmental Change ◽  
New Brunswick ◽  
Water Acidification ◽  
Maritime Provinces ◽  
Freshwater Resources ◽  
Anthropogenic Stressors ◽  
Surface Water Acidification

Freshwater lakes in the Canadian Maritime provinces have been detrimentally influenced by multiple, often synergistic, anthropogenically-sourced environmental stressors. These include surface-water acidification (and a subsequent decrease in calcium loading to lakes); increased nutrient inputs; watershed development; invasive species; and climate change. While detailed studies of these stressors are often hindered by a lack of predisturbance monitoring information; in many cases, these missing data can be determined using paleolimnological techniques, along with inferences on the full extent of environmental change (and natural variability), the timing of changes, and linkages to probable causes for change. As freshwater resources are important for fisheries, agriculture, municipal drinking water, and recreational activities, among others, understanding long-term ecological changes in response to anthropogenic stressors is critical. To assess the impacts of the major water-quality issues facing freshwater resources in this ecologically significant region, a large number of paleolimnological studies have recently been conducted in Nova Scotia and southern New Brunswick. These studies showed that several lakes in southwestern Nova Scotia, especially those in Kejimkujik National Park, have undergone surface-water acidification (mean decline of 0.5 pH units) in response to local-source SO2 emissions and the long-range transport of airborne pollutants. There has been no measureable chemical or biological recovery since emission restrictions were enacted. Lakewater calcium (Ca) decline, a recently recognized environmental stressor that is inextricably linked to acidification, has negatively affected the keystone zooplankter Daphnia in at least two lakes in Nova Scotia (and likely more), with critical implications for aquatic food webs. A consistent pattern of increasing planktonic diatoms and scaled chrysophytes was observed in lakes across Nova Scotia and New Brunswick, suggesting that the strength and duration of lake thermal stratification has increased since pre-industrial times in response to warming temperatures (∼1.5 °C since 1870). These include three lakes near Bridgewater, Nova Scotia, that are among the last known habitat for critically endangered Atlantic whitefish (Coregonus huntsmani). Overall, these studies suggest that aquatic ecosystems in the Maritime Provinces are being affected by multiple anthropogenic stressors and paleolimnology can be effective for inferring the ecological implications of these stressors.

scholarly journals The Derodontidae, Dermestidae, Bostrichidae, and Anobiidae of the Maritime Provinces of Canada (Coleoptera: Bostrichiformia)

Zootaxa ◽  
2007 ◽  
Vol 1573 (1) ◽  
pp. 1-38 ◽  
Author(s):  
CHRISTOPHER G. MAJKA
Keyword(s):  
Nova Scotia ◽  
Forest Management ◽  
New Brunswick ◽  
Prince Edward Island ◽  
Management Practices ◽  
Maritime Provinces ◽  
Dinoderus Minutus ◽  
Saproxylic Species ◽  
Faunal List ◽  
Wood Boring

The beetle families of the Bostrichiformia—the Derodontidae, Dermestidae, Bostrichidae, and Anobiidae – in the Maritime Provinces of Canada are surveyed. Seventy-four native and established introduced species are now known to occur including 30 found in New Brunswick, 65 in Nova Scotia, and 29 on Prince Edward Island. Seven species are newly recorded from New Brunswick, 24 from Prince Edward Island, and 37 from Nova Scotia for a total of 68 new provincial records. A total of 31 species are newly recorded in the Maritime Provinces as a whole, three of which, Dinoderus minutus (Fabricius), Ernobius filicornis LeConte, and Ernobius granulatus LeConte, are newly recorded in Canada. Two species, Ptilinus pruinosus Casey and Caenocara oculata (Say), are removed from the faunal list of New Brunswick, and one subspecies, Attagenus unicolor unicolor (Brahm), is removed from the faunal list of Prince Edward Island since no specimens or published records could be found to support their presence.        Additional records of six other exotic species intercepted at ports and points in the region, but not established here, are also reported. A specimen of the Palearctic Ptinus bicinctus Sturm collected in 1915 in Nova Scotia, establishes a new early timeline for this species in North America. The fauna of the region is distinguished by the very large proportion (37 of 74 species, i.e. 50%) of which is introduced. It is also distinguished by the large proportion (22 of 37 species, i.e. 60%) of the indigenous, native fauna that is apparently rare, perhaps as a result of the historical impact of forest management practices on these wood-boring, saproxylic species. The fauna is further evaluated from both zoogeographic and ecological perspectives.

scholarly journals WOODVILLE ICE CAVE (HANTS COUNTY, NOVA SCOTIA) AND NOTES ON THE ‘ICE CAVES’ OF THE MARITIME PROVINCES

2007 ◽  
Vol 44 (1) ◽  
Author(s):  
M. Moseley
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Cold Storage ◽  
Maritime Provinces ◽  
The Past ◽  
Perennial Ice ◽  
Snow And Ice

Several caves and sinkholes where snow and ice persist well into the summer exist in Nova Scotia and New Brunswick. In the past they were sometimes used as a source of ice or for cold storage, and are known locally as ‘ice caves’ or ‘ice holes’. Although they are not true ice caves in the speleological sense of the term because they do not contain perennial ice, they are very similar. Woodville Ice Cave in Hants County, Nova Scotia, described here, is a particularly good example. Invertebrates and bats recorded from such sites are briefly discussed and the possibility of finding psychrophilic fauna in them is suggested.Plusieurs grottes et dolines sont présentes là où la neige et la glace ne disparaissent que tard durant l’été en Nouvelle‑Écosse et au Nouveau-Brunswick. Autrefois, elles étaient parfois utilisées comme sources de glace ou aux fins d’entreposage sous froid. À l’échelle locale, elles sont connues sous le nom de glacières ou de puits de neige. Elles ne sont pas de véritables glacières au sens habituel dans le domaine de la spéléologie parce qu’elles ne contiennent pas de glace pérenne, mais elles sont très semblables. La grotte Woodville (Woodville Ice Cave) dans le comté de Hants (N.-É.) décrite dans leprésent document, est un très bon exemple. Nous discutons brièvement des invertébrés et des chauves‑souris observés dans de telles grottes et dolines, et nous suggérons qu’il est peut-être possible d’y observer des organismes psychrophiles.

scholarly journals Wintercresses (Barbarea W.T. Aiton, Brassicaceae) of the Canadian Maritimes

2019 ◽  
Vol 133 (2) ◽  
pp. 118
Author(s):  
Colin J. Chapman ◽  
C. Sean Blaney ◽  
David M. Mazerolle
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Exotic Species ◽  
Native Species ◽  
First Record ◽  
Atlantic Canada ◽  
Maritime Provinces ◽  
Area Of Occupancy ◽  
Herbarium Collections

We conducted a review of herbarium collections of the Wintercress genus (Barbarea W.T. Aiton) from the Maritime provinces. Most specimens previously determined to be the regionally rare native species Erect-fruit Wintercress (Barbarea orthoceras Ledebour) are in fact the uncommon exotic Small-flowered Wintercress (Barbarea stricta Andrzejowski). The latter species is here reported as new to Atlantic Canada, where it is scattered but widespread in the three Maritime provinces. Only three collections (two from New Brunswick and one from Nova Scotia) were confirmed as B. orthoceras. Its known range extent and area of occupancy in the Maritimes has been significantly revised, and B. orthoceras is now considered potentially extirpated in New Brunswick and extremely rare in Nova Scotia. One collection from Nova Scotia was referred to another rare exotic species, Early Wintercress (Barbarea verna (Miller) Ascherson), which represents the first record for the Maritimes.

The Coccinellidae (Coleoptera) of the Maritime Provinces of Canada: new records, biogeographic notes, and conservation concerns

Zootaxa ◽  
2006 ◽  
Vol 1154 (1) ◽  
pp. 49 ◽  
Author(s):  
CHRISTOPHER G. MAJKA ◽  
DAVID B. MCCORQUODALE
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
New England ◽  
Habitat Loss ◽  
Coastal Plain ◽  
Prince Edward Island ◽  
New Records ◽  
Maritime Provinces ◽  
Adventive Species ◽  
Disjunct Populations

New records of Coccinellidae in the Maritime Provinces of Canada are reported. The known fauna of the region consists of 47 species: 41 in Nova Scotia, 39 in New Brunswick, and 21 in Prince Edward Island. Of these, records are provided for 13 species newly recorded from Nova Scotia and 14 from Prince Edward Island. Two species, Diomus amabilis (LeConte) and Naemia seriata seriata Melsheimer, are newly recorded in Canada. Didion punctatum (Melsheimer) is removed from the fauna of PEI, and Coccidula lepida LeConte is removed from the fauna of NS, and Scymnus impexus Mulsant is removed from the faunas of NS and NB. Records of two adventive species not established in the region are also reported. Collecting effort in the three provinces and their sub-regions is briefly analyzed and compared. Biogeographic observations are provided in relation to the composition of the fauna as a whole, and of disjunct populations of six Nova Scotia coccinellids, several of which appear to be members of a coastal plain fauna that extends from New England to southern Nova Scotia. The potential vulnerability of the coccinellid fauna is discussed in the context of both adventive species in the region, and habitat loss and conservation.

The Erotylidae and Endomychidae (Coleoptera: Cucujoidea) of the Maritime Provinces of Canada: New records, zoogeography, and observations on beetle-fungi relationships and forest health

Zootaxa ◽  
2007 ◽  
Vol 1546 (1) ◽  
pp. 39-50 ◽  
Author(s):  
CHRISTOPHER G. MAJKA
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Prince Edward Island ◽  
New Records ◽  
Forest Health ◽  
Maritime Provinces ◽  
Ongoing Research ◽  
Prince Edward Islands ◽  
Cape Breton ◽  
History Of

The Erotylidae and Endomychidae of the Maritime Provinces are surveyed. Fifteen species are now known from the region, fourteen in Nova Scotia, seven in New Brunswick, and four on Prince Edward Island. Thirteen new provincial records (seven from Nova Scotia, three from New Brunswick, and three from Prince Edward Island) are reported. Four erotylids, Dacne quadrimaculata (Say), Triplax dissimulator (Crotch), Triplax flavicollis Lacordaire, Triplax macra LeConte; and two endomychids, Rhanidea unicolor (Ziegler) and Lycoperdina ferruginea LeConte, are newly recorded in the Maritime Provinces as a whole. New records of the rare endomychid, Hadromychus chandleri Bousquet & Leschen, are reported. The fauna is examined in a regional zoogeographic context, paying particular attention to the insular faunas of Cape Breton and Prince Edward Islands. Attention is also drawn to the number of species that have been very rarely collected. This apparent scarcity may be related to the long history of forest management in the region, in particular the effects of intensive forestry on the communities of forest fungi on which these species feed and depend. Attention is drawn to the importance of ongoing research to monitor their populations and assess how these species may be employed as indicators of the overall health forest ecosystems.

Tenebrionidae (Coleoptera) of the Maritime Provinces of Canada

2008 ◽  
Vol 140 (6) ◽  
pp. 690-713 ◽  
Author(s):  
Christopher G. Majka ◽  
Patrice Bouchard ◽  
Yves Bousquet
Keyword(s):  
Nova Scotia ◽  
North America ◽  
New Brunswick ◽  
Prince Edward Island ◽  
Forest Ecosystems ◽  
Trophic Group ◽  
Undescribed Species ◽  
Maritime Provinces ◽  
Underlying Causes ◽  
First Time

AbstractThe Tenebrionidae of the Maritime Provinces of Canada are surveyed. Forty-eight species have been reported from the region. Eleven of these species (ten Palearctic and one Nearctic) have been introduced to the region, five of which are apparently now extirpated. Dates of first detection of these species are provided for each province and North America. Thirteen species are newly recorded in New Brunswick, 25 in Nova Scotia, and 15 on Prince Edward Island, for a total of 53 new provincial records. Of these, 18 species including Bolitophagus corticola Say, Neatus tenebrioides (Palisot de Beauvois), Helops gracilis Bland, Blapstinus substriatus Champion, Hymenorus obesus Casey, Hymenorus picipennis Casey, Hymenorus pilosus (Melsheimer), Mycetochara bicolor (Couper), Mycetochara binotata (Say), Mycetochara fraterna (Say), Platydema excavatum (Say), Platydema teleops Triplehorn, Corticeus praetermissus (Fall), Alobates pennsylvanicus (DeGeer), Haplandrus fulvipes (Herbst), Xylopinus saperdioides (Olivier), an undescribed species of Paratenetus Spinola, and an undescribed species of Neatus LeConte are newly recorded for the Maritime Provinces as a whole. One of these, Helops gracilis, is recorded for the first time in Canada. The fauna is discussed from the perspective of the patterns of distribution of species in the region and their possible underlying causes. Island faunas are discussed, as is the saproxylic component of the fauna, with a brief consideration of the importance of this trophic group in the dynamics of forest ecosystems in the region.

Sedimentation of the Mississippian evaporites of the Maritimes: an alternative model

1970 ◽  
Vol 7 (5) ◽  
pp. 1349-1352 ◽  
Author(s):  
Robert Evans
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Recent Work ◽  
Deep Water ◽  
Alternative Model ◽  
Tectonic Setting ◽  
Dead Sea ◽  
Maritime Provinces ◽  
The Dead ◽  
Acadian Orogeny

Recent work on the carbonates and sulfates of the Mississippian Windsorian rocks of the Maritime Provinces has led to the idea that the widespread evaporites in the area are the product of sedimentation in supratidal fiats and in depressions in those flats. The tectonic setting and lithologic features of the more soluble evaporites, however, suggest a comparison with the Plio-Pleistocene sediments of the Dead Sea Graben, and it is proposed that the great thicknesses of chlorides known to exist in Nova Scotia and New Brunswick are the result of rapid sedimentation in possibly deep water within the Fundy Rift formed at the end of the Acadian Orogeny.

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