Results 21 to 30 of about 6,887 (195)

Nymphoides peltata (S. G. Gmel.) O. Kuntze (Menyanthaceae) at the border of geographic range: anatomical and morphological features

open access: yesHortus Botanicus, 2018
The results of the study of species Nymphoides peltata (S. G. Gmel.) O. Kuntze in the Arkhangelsk region (Northwest Russia) are presented. In the region the species population is located at the border of geographic range and therefore this species is ...
Markovskaya Evgenia   +2 more
doaj   +1 more source

INFLUENCE OF TEMPERATURE AND GROWTH REGULATOR ON SPRING OF SEEDS FROM NATURAL POPULATIONS OF SPECIES OF THE GENUS TULIPA L. (LILIACEAE)

open access: yesSiberian Journal of Life Sciences and Agriculture, 2020
Background. Identification of the effect of temperature and growth regulator on seed germination from species populations of Tulipa biflora and T. biebersteiniana, growing in natural plant communities. Materials and methods.
Marianna Grachevna Aduchieva   +4 more
doaj   +1 more source

Особенности формирования популяций инвазионных видов Ambrosia artemisiifolia L., Iva xanthiifolia L., Xanthium albinum L. на юге Среднерусской возвышенности [PDF]

open access: yes, 2012
В статье приведены данные по изучению репродуктивного и фотосинтетического усилия в популяциях инвазионных видов, которые формируются в антропогенно трансформированных ...
Волобуева, Ю. Е.   +1 more
core   +1 more source

Coconut rhinoceros beetle Oryctes rhinoceros (Coleoptera: Scarabaeidae) confirmed in the Americas

open access: yesEPPO Bulletin, Volume 55, Issue 3, Page 511-517, December 2025.
Abstract In 2022, a suspected incursion of Oryctes rhinoceros (coconut rhinoceros beetle, CRB) was reported in Bahía de Banderas, Nayarit, México, based on damage symptoms observed on coconut palms and photographs of beetles on a social media site. This prompted collaboration with local biologists and land managers, and a survey of the area with the ...
Trevor A. Jackson   +5 more
wiley   +1 more source

СЛУЧАЙ ОБНАРУЖЕНИЯ ПОПУЛЯЦИИ ПРЕСНОВОДНОЙ ГИДРОИДНОЙ МЕДУЗЫ CRASPEDACUSTA SOWERBII В РЕКЕ ИНГА ТВЕРСКОЙ ОБЛАСТИ [PDF]

open access: yes, 2006
Обнаружена локальная популяция пресноводной гидроидной медузы Craspedacusta sowerbii Lankester (1880) в притоке р. Волга. Шесть экземпляров медуз было отловлено и помещено в аквариум для проведения наблюдений.
Николаева, Н.Е.
core  

First record of Euwallacea fornicatus Eichhoff (Coleoptera: Curculionidae: Scolytinae) in Spain

open access: yesEPPO Bulletin, Volume 55, Issue 1, Page 146-150, April 2025.
Abstract The invasive polyphagous shot hole borer Euwallacea fornicatus (Eichhoff, 1868) was recorded in a public garden in Granada province, Andalusia, Southern Spain in April, 2022. This is the first record of a self‐sustaining population of this pest in an outdoor environment in Europe.
A. Goldarazena   +3 more
wiley   +1 more source

ECOLOGICAL AND RESOURCE POTENTIAL FOR THE DEVELOPMENT OF HUNTING AND FISHING TOURISM IN THE STAVROPOL REGION

open access: yesСовременная наука и инновации, 2022
Today, one of the most important directions in development of internal tourism industry is hunting and fishing tourism. In the article we considered in detail the resource zoological potential of the Stavropol Territory. It is huge but today is still far
N. V. Barabash, N. V. Parshina
doaj  

SOCIAL-DEMOGRAPHIC PHENOMENON OF THE FIRST 100 YEARS OF KOTOVSK POPULATION BEING OF TAMBOV REGION

open access: yesВестник Тамбовского университета. Серия: Гуманитарные науки, 2016
It is based on traditional (archival vital statistics, official record, diaries, memoirs) and also on new and original (E-Books of Condolence, genealogies, questionnaires) mass sources of social-demographic information processed in E-database.
Vladimir Lvovich Dyachkov   +1 more
doaj   +1 more source

Cameras or Camus? Comparing Snow Track Surveys and Camera Traps to Estimate Densities of Unmarked Wildlife Populations

open access: yesEcology and Evolution, Volume 14, Issue 12, December 2024.
Waller et al. used camera traps to estimate the densities of four ungulate species in the Russian Far East and compared these estimates with those from the traditional Formozov snow tracking approach. The authors found that both approaches can provide consistent estimates of population density, but the time and resource demands of snow tracking were ...
Scott J. Waller   +4 more
wiley   +1 more source

MONITORING OF THE BIODIVERSITY OF LAND VERTEBRATE ANIMALS IN THE TERRITORY OF THE APANASENKOVSKY REGION OF STAVROPOL KRAI

open access: yesВестник Северо-Кавказского федерального университета, 2022
Article contains data on number, a ball assessment of a look, a role in biocenosis the land vertebrate animals, the habitats given about the area and distribution on territories of objects of fauna, and also data on the types included in regional and ...
Konstantin V. Kharin, Andrey A. Likhovid
doaj  

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