Results 51 to 60 of about 150,090 (326)

Veronica paczoskiana is no more than a pine forest ecotype of V. spicata that evolved independently in forest‐steppes of Ukraine and the Altai region

open access: yesNordic Journal of Botany, EarlyView.
The Eurasian steppe area has been a dynamic vegetation biome during the Pleistocene with its repeated cycles of forest advances and retreats. Such a scenario allows the evolution of ecotypes at the ecotone with the potential for parallel evolution in different parts of the distribution area.
Dirk C. Albach   +4 more
wiley   +1 more source

First description of the female of the theridiid spider Robertus golovatchi (Araneae: Theridiidae) [PDF]

open access: yes, 2012
The female of Robertus golovatchi Eskov, 1987 is described for the first time from Abkhazia and the male is also figured. The female is compared to another species known from the Caucasus R.
Kovblyuk, Mykola M., Marusik, Yuri M.
core   +2 more sources

A comparative ethnobotany of Khevsureti, Samtskhe-Javakheti, Tusheti, Svaneti, and Racha-Lechkhumi, Republic of Georgia (Sakartvelo), Caucasus

open access: yesJournal of Ethnobiology and Ethnomedicine, 2016
BackgroundThe Republic of Georgia (Sakartvelo in Georgian language) is part of the Caucasus biodiversity hotspot, and human agricultural plant use dates bat at least 6000 years.
R. Bussmann   +8 more
semanticscholar   +1 more source

Jurassic to Cenozoic Magmatic and Geodynamic Evolution of the Eastern Pontides and Caucasus Belts, and Their Relationship With the Eastern Black Sea Basin Opening

open access: yesTectonics, 2020
The magmatic arcs of the Eastern Pontides and Lesser Caucasus lie in continuation from one another. A comparison of the subduction‐related magmatic rocks outcropping throughout this segment of the Northern Tethyan belt exhibits chronological disparities,
M. Hässig   +5 more
semanticscholar   +1 more source

Tracing holotype trajectories: Mapping the movement of the most valuable herbarium specimens

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Global efforts to protect biodiversity depend on fair access to key plant specimens. This study examines the distribution of 119,361 holotypes—unique herbarium specimens used to formally describe new plant species. By linking collection and storage data, we found that holotypes are increasingly held closer to their places of origin, particularly in ...
Dominik Tomaszewski   +2 more
wiley   +1 more source

Green Economy: Regional Priorities [PDF]

open access: yes, 2015
The article is dedicated to transforming the economy of Russian regions to a green economy, which is an essential factor for the sustainable development.
Bobylev, S. N.   +2 more
core   +1 more source

The role of Alpine botanical gardens in integrating germplasm bank collections and mission

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
This study underscores the vital role of Alpine botanical gardens (ABGs) in safeguarding Europe's alpine biodiversity amid climate change and habitat loss. By acting as living laboratories and reservoirs of plant genetic resources, ABGs bridge ex situ and in situ conservation, supporting ecosystem resilience and informing restoration strategies.
Marco Canella   +19 more
wiley   +1 more source

Transverse-layer partitioning of artificial neural networks for image classification

open access: yesКомпьютерная оптика
We discuss issues of modular learning in artificial neural networks and explore possibilities of the partial use of modules when the computational resources are limited.
N.A. Vershkov   +4 more
doaj   +1 more source

Why the EU is failing in its neighbourhood: the case of Armenia [PDF]

open access: yes, 2012
As the Arab Spring has made clear, the EU’s strategic aim of being surrounded by a ring of secure, democratic, and prosperous friends has not yet materialized. While most previous analyses have found fault with inconsistent application of conditionality,
Van Hoof, Lieve
core   +1 more source

Empirical analysis of the integration activity of business structures in the regions of Russia [PDF]

open access: yes, 2015
The article investigates the integration activity of business structures in the regions of Russia. A wide variety of approaches to study the problems and prospects of economic integration and the current dispute on the role of integration processes in ...
Karelina, M. G.
core   +4 more sources

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