Results 71 to 80 of about 19,909 (262)

What is a tree in the mediterranean basin hotspot? A critical analysis [PDF]

open access: yes, 2019
Background: Tree species represent 20% of the vascular plant species worldwide and they play a crucial role in the global functioning of the biosphere. The Mediterranean Basin is one of the 36 world biodiversity hotspots, and it is estimated that forests
Arroyo Marín, Juan   +7 more
core   +1 more source

Digitised herbarium specimen data reveal a climate change‐related trend to an earlier, shorter Canadian Arctic flowering season, and phylogenetic signal in Arctic flowering times

open access: yesNew Phytologist, EarlyView.
Summary The Arctic is experiencing some of the world's most rapid changes in climate. Arctic plant flowering time responses to climate change are understudied. Globally, conflicting evidence exists on whether flowering time responses to temperature are evolutionarily conserved.
Zoe A. Panchen   +3 more
wiley   +1 more source

Macronutrient composition in pollen affects development and survival in wild bees

open access: yesPhysiological Entomology, EarlyView.
Small carpenter bees (Ceratina calcarata) were reared on diets formulated with black poplar and dandelion pollen, while closely monitoring developmental metrics, lipid content and survival. Macronutrient analyses on both pollen types revealed dandelion pollen contained lower levels of protein, essential amino acids and several fatty acids, which ...
Khara W. Stephen, Sandra M. Rehan
wiley   +1 more source

Региоселективный синтез и свойства ацетильных производных фенолгликозидов [PDF]

open access: yes, 2018
Региоселективный синтез и свойства ацетильных производных фенолгликозидов. Работа посвящена выявлению реакционной способности при кислотном дезацетилировании с использованием HCl / EtOH в CHCl3, которая приводит к дезацетилированию на O-3, O-4 и O-6 ...
Нагорная, Марина
core   +2 more sources

Sugescent Salicaceae Invaders (Insecta, Homoptera) of the South-Eastern Part of Central Asia

open access: yesРоссийский паразитологический журнал, 2020
The purpose of the research is to study fauna and dispersion of Homoptera attacked Salicaceae at the south-eastern part of Central Asia. Materials and methods.
A. K. Khusanov   +2 more
doaj   +1 more source

Turgor loss point explains climate‐driven growth reductions in trees in Central Europe

open access: yesPlant Biology, EarlyView.
Leaf turgor loss point of native tree species shows a high predictive power over the observed growth anomalies in Central Europe during the extensive drought period between 2018 and 2020. Abstract As climate change thrives, and the frequency of intense droughts is affecting many forested regions, a mechanistic understanding of the factors conferring ...
N. Kunert, I. K. Münchinger, P. Hajek
wiley   +1 more source

The Elemental Chemical Composition of Populus tremula in the Conditions of Technogenic Ecosystems of Kuzbass

open access: yesЛесной журнал
Populus tremula L. (aspen) is one of the widespread species of woody plants, which has not yet been sufficiently studied in both ecological and biogeochemical terms.
Yulia V. Zagurskaya   +1 more
doaj   +1 more source

The evolutionary fate of rpl32 and rps16 losses in the Euphorbia schimperi (Euphorbiaceae) plastome

open access: yesScientific Reports, 2021
Gene transfers from mitochondria and plastids to the nucleus are an important process in the evolution of the eukaryotic cell. Plastid (pt) gene losses have been documented in multiple angiosperm lineages and are often associated with functional ...
Aldanah A. Alqahtani, Robert K. Jansen
doaj   +1 more source

Distribution and diversity of exotic plant species in montane to alpine areas of Kosciuszko National Park [PDF]

open access: yes, 2013
Diversity and distribution of exotic plant taxa in Kosciuszko National Park in south-eastern Australia were reviewed based on 1103 records of exotics from 18 vegetation surveys conducted between 1986 and 2004.
Bear, Roxana   +2 more
core  

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