scholarly journals A Review of Recently Discovered Remains of the Pleistocene Branchiopods (Anostraca, Notostraca) from NE Siberia and Arctic Canada

Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 280
Author(s):  
D. Christopher Rogers ◽  
Anton A. Zharov ◽  
Anna N. Neretina ◽  
Svetlana A. Kuzmina ◽  
Alexey A. Kotov
Keyword(s):  
Western North America ◽  
Temporary Wetlands ◽  
Indicator Organisms ◽  
Aquatic Habitats ◽  
Eastern Asia ◽  
Large Mammal ◽  
Large Branchiopods ◽  
North Eastern ◽  
North Western ◽  
Large Branchiopod

In this study, we examine, identify, and discuss fossil remains of large branchiopod crustaceans collected from six sites across the Beringian region (north-eastern Asia and north-western North America). Eggs and mandibles from Anostraca and Notostraca, as well as a notostracan telson fragment and a possible notostracan second maxilla, were collected from both paleosediment samples and also from large mammal hair. The remains of large branchiopods and other species that are limited to seasonally astatic aquatic habitats (temporary wetlands) could be useful indicator organisms of paleoecological conditions. Different recent large branchiopod species have very different ecological preferences, with each species limited to specific geochemical component tolerance ranges regarding various salinity, cation, and gypsum concentrations. Our purpose is to bring the potential usefulness of these common fossil organisms to the attention of paleoecologists.

The Galium trifidum group (Galium sect. Aparinoides, Rubiaceae)

1976 ◽  
Vol 54 (16) ◽  
pp. 1911-1925 ◽  
Author(s):  
C. Puff
Keyword(s):  
North America ◽  
Eastern North America ◽  
Great Lakes Region ◽  
Western North America ◽  
Eastern Asia ◽  
Chromosome Counts ◽  
New Classification ◽  
North Eastern ◽  
North Western

By using morphology, karyology, pollen size, leaf flavonoids, ecological observations, and modification experiments, a new classification of the Galium trifidum group is proposed. Nine taxa in five species are recognized: (1) G. tinctorium, with ssp. tinctorium and sap. floridanum (new comb.) in eastern North America; (2) G. brevipes, a rare species centered in the Great Lakes region; (3) G. trifidum, with ssp. trifidum in northern North America. Asia, and Europe, ssp. columbianum (new comb.) in (north)western North America and (north)eastern Asia, and ssp. subbiflorum (new comb.) and ssp. halophilum (new comb.) in northern North America; (4) G. innocuum in southeastern Asia; (5) G. karakulense in central Asia.New chromosome counts of n = 12 and 2n = 24 are reported for G. tinctorium ssp. tinctorium and ssp. floridanum; and G. trifidum ssp. trifidum, ssp. columbianum, and ssp. subbiflorum.

Late Cretaceous Kholokhovchan floral assemblage of the Okhotsk-Chukotka volcanogenic belt (North-Eastern Asia)

Palaeobotany ◽  
2013 ◽  
Vol 4 ◽  
pp. 116-147 ◽  
Author(s):  
S. V. Shczepetov ◽  
A. B. Herman
Keyword(s):  
Late Cretaceous ◽  
Eastern Asia ◽  
Plant Fossils ◽  
Volcanogenic Belt ◽  
North Eastern ◽  
Volcanogenic Deposits ◽  
Floral Assemblage ◽  
Eastern Russia ◽  
Comprehensive Study

Results of comprehensive study of the Kholokhovchan floral assemblage collection is summarized. These plant fossils were collected in 1978 by E. L. Lebedev from volcanogenic deposits in Penzhina and Oklan rivers interfluve, North-Eastern Russia. This assemblage was previously known as a list of Lebedev’s preliminary identifi cations only. He had suggested that the Kholokhovchan assemblage is correlative to the latest Albian — early Turonian Grebenka flora from the Anadyr River middle reaches. However, our study demonstrates that the Kholokhovchan assemblage is most similar to the presumably the Turonian-Coniacian Arman flora of the Okhotsk-Chukotka volcanogenic belt and, therefore, should be dated as the Turonian-Coniacian or Turonian.

Habitats for large branchiopods in the agricultural landscape of the Mureş Floodplain Natural Park: how long will they last?

Crustaceana ◽  
2021 ◽  
Vol 94 (7) ◽  
pp. 775-795
Author(s):  
Alfred-Ştefan Cicort-Lucaciu ◽  
Gabriel-Lucian Herlo
Keyword(s):  
Agricultural Landscape ◽  
Habitat Type ◽  
Natural Habitats ◽  
Natural Landscape ◽  
Large Branchiopods ◽  
Natural Park ◽  
Black Spots ◽  
Chirocephalus Diaphanus ◽  
Floodplain Area ◽  
Large Branchiopod

Abstract In the last two hundred years, the Mureş River Floodplain has suffered major changes caused by dike constructions, meander cutting, and by the transformation of the natural landscape into an agricultural one. In this environmental context, we wanted to find out the degree to which large branchiopod species still survive in the Mureş Floodplain area. Every stagnant aquatic habitat encountered in 2019 in the Mureş Floodplain Natural Park was sampled. For the habitats where more species co-occur, urgent preservation actions must be taken. Most of the species prefer open habitats and have survived in the wheel ruts on agricultural lands. In the absence of natural habitats, the importance of this habitat type becomes a major one. The forest advantages species related to shady habitats, such as Chirocephalus diaphanus. We have found several individuals in the park that showed black spots on their bodies, characteristic of the black disease of fairy shrimp. The presence of the disease only in the populations from wheel ruts suggests that vehicles which make these ruts, could be the carriers of the disease.

scholarly journals Nutraceutical potential of Ficus roxburghii an underutilized fruit of Sikkim Himalayas

2018 ◽  
Vol 10 (3) ◽  
pp. 876-880
Author(s):  
Yamuna Pandey ◽  
S. Upadhyay ◽  
S. Manivannan ◽  
L. Sharma ◽  
S.S. Bhatt
Keyword(s):  
Ascorbic Acid ◽  
Mineral Content ◽  
Total Phenols ◽  
Total Carotenoids ◽  
Energy Value ◽  
Phytochemical Content ◽  
Balanced Diet ◽  
Western Himalayan Region ◽  
North Eastern ◽  
North Western

Ficus roxburghii, “Elephant ear fig “or wild fig is one of very popular fruits found growing wild in the hills of North Eastern and North Western Himalayan region. The fruit of wild fig has also been used as medicine by the tribal people of Sikkim and other states of India. Keeping this in view, the present study was conducted at Laboratory of Department of Horticulture, Sikkim University, Sikkim to access the different nutraceuticals properties as nutritional constituent like protein, fat, fibre, carbohydrate and energy value, mineral content viz.Ca, K, Mg, Na, Zn, Co, Mo, Fe, Mn and phytochemical content such as total phenols, flavonoid, ascorbic acid, anthocyanin and total carotenoids of F. roxburghii. The results of present study revealed that fruit of F. roxburghii contains significant amount of nutritional, mineral and phytochemical properties viz. protein (3.00±0.06%), fat (0.13±0.04%), fibre (3.06±0.02%), carbohydrate (90.81±0.44 %), energy value (376.45±1.44), Ca (23.69 ± 1.7), Mg  (73.09 ± 2.1), K (819.64 ± 12.54), Mo (0.58 ±  0.06), Na (6.73 ± 1.2), Zn (0.34 ± 0.10). Fe (26.55 ± 2.8), Cu (4.22 ± 0.20), Mn (7.11 ± 0.11), total phenols (4.13±0.52 mg GAE/ G), total flavonoid (3.10±0.09 mg GAE/ G), ascorbic acid (3.36±0.27 mg GAE/ G), anthocyanin (1.13±0.15 mg GAE/ G) and total carotenoids (0.68±0.10 mg GAE/ G). It may be concluded that the fruit of F. roxburghiiis rich in nutraceuticals and must be incorporated in our balanced diet.

Active-middle alignment and the aoristic drift

2020 ◽  
pp. 191-212
Author(s):  
Delia Bentley
Keyword(s):  
The North ◽  
North Eastern ◽  
North Western

In the classification of Romance along a northern–southern continuum the languages which exhibit patterns of active-middle alignment (notably, the HABERE ~ ESSE alternation in the perfect) are also known to have undergone the aoristic drift. This article starts from Smith’s (2016) observation that the north-western oïl varieties have maintained the preterite, while also alternating the two auxiliaries, whereas the north-eastern oïl varieties have lost the HABERE ~ ESSE alternation and undergone the aoristic drift. It is argued that the developments which have occurred in the north-western varieties are not theoretically challenging or unique within the Romània. With respect to the generalization of habere in the north-eastern areas and, less conspicuously, throughout Gallo-Romance, it is claimed that this development was engendered by the rise of a dependent-marking system which follows undifferentiated nominative alignment. It is concluded that the modern Romània exhibits a stronghold of active-middle alignment in a group of central languages, which are essentially head marking.

scholarly journals Ruminants reveal Eocene Asiatic palaeobiogeographical provinces as the origin of diachronous mammalian Oligocene dispersals into Europe

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bastien Mennecart ◽  
Manuela Aiglstorfer ◽  
Yikun Li ◽  
Chunxiao Li ◽  
ShiQi Wang
Keyword(s):  
Central Asia ◽  
New Taxa ◽  
Late Eocene ◽  
Eastern Asia ◽  
Large Mammal ◽  
Southern Province ◽  
The North ◽  
Grande Coupure ◽  
Dispersal Events ◽  
North And South

AbstractFaunal provincialism between the North and South parts of Eastern Asia is shown to have been in place since the late Eocene. This provincialism structured the mammalian dispersals across Eurasia for millions of years and provides insights into both palaeonvironments and palaeoclimate zonation. In addition, this study reveals the oldest record of a crown ruminant (Iberomeryx from Shinao, China). Ecologically, as well as economically, ruminant artiodactyls are one of the most important large mammal groups today. The revision of the ruminants from the Shinao Formation, from the Caijiachong marls and Xiaerhete, resulted in two new taxa and shows that the different provinces were populated by distinct taxa living in different environments, dominated by the monsoon in the South and drier conditions in the North. Evaluating this result in a Eurasian context demonstrates that the dispersals from Asia to Europe was complex. These results confirm that there were at least two dispersal events, distinct in space and time: the Grande-Coupure from Northern and Central Asia along the North ca. 34 Mya and the Bachitherium dispersal event from the Southern province along a southerly route ca. 31 Mya.

He, Ar, C and N isotopes in thermal springs of the Chukotka Peninsula: Geochemical evidence of the recent rifting in the north-eastern Asia

2013 ◽  
Vol 339 ◽  
pp. 127-140 ◽  
Author(s):  
Boris G. Polyak ◽  
Edward M. Prasolov ◽  
Vassilii Yu Lavrushin ◽  
Andrew L. Cheshko ◽  
Igor L. Kamenskii
Keyword(s):  
Thermal Springs ◽  
Eastern Asia ◽  
Geochemical Evidence ◽  
The North ◽  
North Eastern ◽  
N Isotopes ◽  
C And N

The climate space of fire regimes in north-western North America

2015 ◽  
Vol 42 (9) ◽  
pp. 1736-1749 ◽  
Author(s):  
Ellen Whitman ◽  
Enric Batllori ◽  
Marc-André Parisien ◽  
Carol Miller ◽  
Jonathan D. Coop ◽  
...  
Keyword(s):  
North America ◽  
Fire Regimes ◽  
Western North America ◽  
Climate Space ◽  
North Western

Rediscovery of the Tasmanian Grasshopper Schayera-Baiulus (Orthoptera, Acrididae) in the Field

1991 ◽  
Vol 39 (6) ◽  
pp. 655 ◽  
Author(s):  
KHL Key
Keyword(s):  
Wide Distribution ◽  
Habitat Requirements ◽  
The North ◽  
North Eastern ◽  
North Western

Two nymphs of the rare Tasmanian grasshopper Schayera baiulus (Erichson), a male and a female, have been discovered in the north-eastern and north-western corners of Tasmania respectively, thus confirming its Tasmanian provenance and suggesting a former wide distribution across the north of the island. The nymphs are described and figured. The female was reared to maturity and the adult genitalia described. The very different environments at the two capture localities are documented. The problems involved in defining the habitat requirements and securing the survival of the species are discussed.

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