Seed Productivity of Epipactis atrorubens (Hoffm.) Besser (Orchidaceae, Liliopsida) on the Northern Border of Its Distribution Range

2021 ◽  
Vol 48 (10) ◽  
pp. 1813-1821
Author(s):  
I. A. Kirillova ◽  
D. V. Kirillov
Keyword(s):  
Distribution Range ◽  
Seed Productivity ◽  
Northern Border

scholarly journals On limits of the distribution range of the Crimean rock lizard Darevskia lindholmi (Sauria: Lacertidae)

2021 ◽  
Vol 21 (3/4) ◽  
pp. 101-122
Author(s):  
O. V. Kukushkin ◽  
◽  
I. S. Turbanov ◽  
R. A. Gorelov ◽  
A. G. Trofimov ◽  
...  
Keyword(s):  
Distribution Range ◽  
Forest Steppe ◽  
Marginal Populations ◽  
Crimean Peninsula ◽  
Crimean Mountains ◽  
The North ◽  
Northern Border ◽  
Wide Range ◽  
Rock Lizard ◽  
The Right

New data on the boundaries of the distribution range of the Lindholm rock lizard (Darevskia lindholmi), an endemic of the Crimean Peninsula, are presented. This petrophilous lizard inhabit a wide range of biotopes in various landscape levels of the Mountainous Crimea. The upper boundary of D. lindholmi distribution in the southwest of the Main Range of the Crimean Mountains reaches an elevation of 1,520 m a.s.l. (Ai-Petrinskaya Yayla, KemalEgerek Mountain), while on the other high uplands with altitudes above 1.5 km and colder climate (Babugan and Chatyrdag), the species was traced only up to 1,250–1,320 m a.s.l. The northern border of D. lindholmi range in the western part of the Crimean Mountains runs along the Outer Foothill Range (the right bank of the Alma River), while in the eastern part it corresponds the northernmost rocky massifs of the Inner Foothill Range to the north of 45º N latitude. Isolated marginal populations found in the forest-steppe or phrygana-steppe landscapes of the Foothills and arid Southeastern Coast differs significantly in their distance from the main habitat of the species, lizards’ abundance and density. A hypothetical history of the formation of the current range of the Lindholm lizard is discussed.

scholarly journals Seed Productivity of Epipactis atrorubens (Hoffm.) Besser (Orchidaceae, Liliopsida) on the Northern Border of its Distribution Area

2020 ◽  
pp. 191-208
Author(s):  
I. A. Kirillova ◽  
D. V. Kirillov
Keyword(s):  
Komi Republic ◽  
Limiting Factors ◽  
Distribution Area ◽  
Anthropogenic Factors ◽  
Limiting Factor ◽  
Ural Mountains ◽  
Seed Productivity ◽  
Northeast Russia ◽  
Reproductive Characteristics ◽  
Northern Border

The Orchids due to their biological features, high decorative properties and poor resistance against anthropogenic factors are one of the most vulnerable components in vegetation of the world. Their conservation cannot be efficient without the knowledge on their reproductive biology. These data are especially important for species on the borders of their distribution area with additional reproduction limiting factors. Our study object is a rare orchid species Epipactis atrorubens (Hoffm.) Besser. During field works on the territory of the Komi Republic (northeast Russia), we studied 50 populations of E. atrorubens. Reproductive characteristics (fruit set, seed productivity and seed morphometry) were studied in 19 of them. We established that the main limiting factor in the North is a short vegetation period. Frosts damage generative shoots and do not allow seeds to ripe. The capsule of E. atrorubens on the northern distribution border contains fewer seeds than in the central part of areal. Also less is the indicator of real seed productivity. Within the Komi Republic on sample of two sites (the Timan Range and the Ural Mountains), we also see the decrease in all reproductive characteristics from south to north: the number and size of flowers, the number and quality of seeds decrease, their shape changes. However deterioration in seed productivity is compensated by an increase in seed volume. The populations of less than 50 shoots, in which juvenile plants are not marked, are in critical condition.

scholarly journals Dactylorhiza incarnata (L.) Soó (Orchidaceae, Liliopsida) on the northern border of its distribution area: Population structure and seed productivity

2021 ◽  
pp. 272-292
Author(s):  
I. A. Kirillova ◽  
D. V. Kirillov
Keyword(s):  
Population Structure ◽  
Flowering Time ◽  
Population Biology ◽  
Seed Quality ◽  
Komi Republic ◽  
Average Density ◽  
Distribution Area ◽  
Seed Productivity ◽  
North East ◽  
Northern Border

The results of the study of the population biology of the rare orchid Dactylorhiza incarnata (L.) Soó on the territory of the Komi Republic (north-east of European Russia), where the species is located on the northern border of its range, are presented. Data on the population structure, morphometric features of plants, and reproductive characteristics of the species are given. It was found that the size of plants and the number of flowers in the inflorescence of this species in the region is lower than in the more southern parts of its range. The populations size ranges from 30 to 350 individuals with their average density of 0.7–3.7 per 1 m2 , and it is common for this species in other parts of its distribution area. Reproductive success is associated with the weather of the second decade of June because the flowering time of the species in the region happens in this time. It was found that the seed size of D. incarnata (0.55×0.20 mm) on its northern border is smaller than in other parts of the range. The seed productivity is rather high: one fruit contains an average of 6.2 thousands of seeds and one individual could produce about 49.4 thousands of seeds. Temperature during flowering time and precipitation during seed ripening may affect seed quality. The presence of juvenile individuals (%) in all the studied populations shows seed recruitment in populations of this species at the northern limit of the range, despite a lower seed set in comparison with southern populations. 

Phylogeography of the gray red-backed vole Craseomys rufocanus (Rodentia: Cricetidae) across the distribution range inferred from nonrecombining molecular markers

2012 ◽  
Vol 11 (2) ◽  
pp. 137-156 ◽  
Author(s):  
N.I. Abramson ◽  
T.V. Petrova ◽  
N.E. Dokuchaev ◽  
E.V. Obolenskaya ◽  
A.A. Lissovsky
Keyword(s):  
Molecular Markers ◽  
Distribution Range

The First Record of Tesselated Snake, Natrix tesselata Laurenti, 1768 in the Central Chernozem Territory of Russia and Some Other Results of the Herpetological Research in the Upper Don

2011 ◽  
Vol 4 (2) ◽  
pp. 192-194
Author(s):  
Georgy A. Lada ◽  
V. Y. Nedosekin
Keyword(s):  
Rana Temporaria ◽  
First Record ◽  
Isolated Population ◽  
Common Frog ◽  
Northern Border ◽  
Frog Rana Temporaria ◽  
Bombina Bombina ◽  
Central Chernozem

A small isolated population of tesselated snake, Natrix tesselata was found in the Upper Don (Lipetsk Region, Russia). It is the first record of this species in the Central Chernozem Territory of Russia, which is separated from the northern border of the main range by the distance of about 200 km. An isolated population of common frog, Rana temporaria and phenetically peculiar population of fire-bellied toad, Bombina bombina are found here too. Faunistic aspect of new herpetological records is discussed.

The Taxonomic Status and Distribution Range of Six Theloderma Species (Anura: Rhacophoridae) with a New Record in China

2017 ◽  
Vol 24 (2) ◽  
pp. 99 ◽  
Author(s):  
Hou Mian ◽  
Yu Guo-hua ◽  
Chen Hong-man ◽  
Liao Chang-le ◽  
Zhang Li ◽  
...  
Keyword(s):  
New Record ◽  
Taxonomic Status ◽  
Distribution Range

SEED PRODUCTIVITY OF ALFALFA IN THE SECOND CUT IN THE PRE-URAL STEPPE ZONE OF BASHKORTOSTAN

2018 ◽  
Vol 6 (3) ◽  
pp. 60-63
Author(s):  
A.A. Nisaea ◽  
◽  
R.L. Akchurin ◽  
R.A. Biktimirov ◽  
R.K. Nafikov ◽  
...  
Keyword(s):  
Steppe Zone ◽  
Seed Productivity

Yield and seed productivity of pear rootstock forms in the conditions of the steppe zone of the Southern Urals

2020 ◽  
Vol 62 ◽  
pp. 39-47
Author(s):  
A. I. Lokhova ◽  
E. Z. Savin ◽  
A. M. Rusanov ◽  
A. A. Mushinskiy
Keyword(s):  
Steppe Zone ◽  
Southern Urals ◽  
Botanical Garden ◽  
Climatic Conditions ◽  
High Yield ◽  
State University ◽  
Maximum Weight ◽  
Seed Productivity ◽  
The Southern Urals ◽  
Typical Soil

The article presents the results of studying the diversity of pear rootstock forms in terms of yield and seed productivity. The research was carried out at the experimental sites of the Orenburg Experimental Station of Horticulture and Viticulture of AllRussian Horticultural Institute for Breeding, Agrotechnology and Nursery and the Botanical Garden of the Orenburg State University in 2017-2019, in typical soil and climatic conditions of the Orenburg city. The purpose of the study is to identify pear rootstock forms characterized by high yield and stable seed productivity for use in the future as a seed rootstock. During the research, 15 pear accessions were studied; the planting scheme was 6x4 m. As a result of research, it was found that the rootstock form Temno-zelenaya is characterized by a high yield (40 kg/tree). High seed productivity of more than 6 seeds in one fruit was observed in samples: Vernaya (6.0-6.5 pcs.), SK-1, SK-3 (6.1-7.8 pcs.), SK-2 (7.0-7.5 pcs.), Chang Bai Li (7.4-7.7 pcs.), Semennaya 214 (7.5-7.8 pcs.). It was revealed that the Xiao he Bai Li variety is characterized by the maximum weight of 1000 seeds (65.2 g). Analysis of accessions by seed yield established that a consistently high yield is observed in the varieties Chang Bai Li (2.5-4.2 %), Vernaya (3.96-4.18 %) and forms SK-1 (2.0-3.25%), SK-2 (2.25-2.75 %), SK-3 (1.43-4.0 %). Pear rootstock forms Chang Bai Li, Vernaya, Semennaya 214, SK-1, SK-2, SK-3 were identifi ed, which can be recommended for production testing as seed pear rootstocks for the conditions of the steppe zone of the Southern Urals.

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