Results 61 to 70 of about 5,090,064 (337)

Grassland legacy remaining in vegetation and seedbank species diversity: Evaluation in abandoned grasslands and plantation forests

Global Ecology and Conservation, 2022
Species-rich semi-natural grasslands have been drastically transformed into agricultural areas, plantation forests, and abandoned grasslands worldwide.
Asuka Koyama, Kei Uchida
doaj   +1 more source

Structural and Functional Characterization of EXPO‐Derived Extracellular Vesicles in Plants

Advanced Science, EarlyView.
In this study, 3D electron tomography (ET), cryo‐ET, and immunogold transmission electron microscopy (TEM) are employed to characterize plant extracellular vesicles (EVs) under physiological conditions. EVs are classified into three distinct categories according to their size, content, and molecular‐marker profiles. Furthermore, Exo70E2‐positive medium
Jiayang Gao, Yanbin Li, Shengqi Zhang, Yilin He, Zhiqi Liu, Juan Wang, Jingmin Hua, Jinyu Chen, Junru Zhong, Huan Zhong, Yiji Xia, Yong Cui, Liwen Jiang   +12 more
wiley   +1 more source

Palynostratigraphy and vegetation history of the Triassic–Jurassic transition in East Greenland

Journal of the Geological Society, 2012
We present a palynological study of a terrestrial Triassic–Jurassic (Tr–J; c. 200 Ma) boundary section at Astartekløft, East Greenland. We have generated a new palynostratigraphic scheme and vegetation history for this locality, and have integrated these
L. Mander, Wolfram M Kürschner, J. McElwain   +2 more
semanticscholar   +1 more source

Ethiopian vegetation types, climate and topography

Plant Diversity, 2020
Ethiopia is land of geographical contrasts with elevations that range from 125 m below sea level in the Danakil Depression to 4533 m above sea level in the Semien Mountains, a world heritage site.
Mengesha Asefa, M. Cao, Yunyun He, E. Mekonnen, Xiaoyang Song, Jie Yang   +5 more
semanticscholar   +1 more source

Exclusive Breastfeeding Drives AMPK‐Dependent Thermogenic Memory in BAT and Promotes Long‐Term Metabolic Benefits in Offspring

Advanced Science, EarlyView.
Exclusive breastfeeding establishes a thermogenic memory in brown adipose tissue by activating the HIF1AN/AMPK/α‐ketoglutarate axis via milk‐derived extracellular vesicles enriched in miR‐125a‐5p. This programming preserves metabolic health, while αKG supplementation restores BAT function under mixed feeding, offering strategies to mitigate the ...
Ningxi Wu, Anwen Yin, Xiang Yu, Mingxin Wang, Jiahui Zhang, Kerong Liu, Yutong Hou, Minkai Cao, Yiting Zhang, Xiaoxiao Zhang, Yao Gao, Xirong Guo, Le Zhang, Yun Li   +13 more
wiley   +1 more source

A 7,000 years trajectory of socio-ecosystems in the montane belt of the northern French Alps

Frontiers in Environmental Archaeology
IntroductionThis study, conducted on the Plateau des Glières, in the northern French Alps, investigates the evolution of vegetation composition over the past 7000 years.
Andréa Julien, Andréa Julien, Erwan Messager, Elise Doyen, David Etienne, Laurent Marquer, Charline Giguet-Covex   +6 more
doaj   +1 more source

Effects of micro-topographies on stand structure and tree species diversity in an old-growth evergreen broad-leaved forest, southwestern Japan

Global Ecology and Conservation, 2015
Stand structure and species diversity were studied in correspondence with micro-topographies in an old-growth forest in southwestern Japan. The study was conducted in a 200×200m2 permanent plot, which were divided into 400 subplots using grids of 10m×10m.
Tran Van Do, Tamotsu Sato, Satoshi Saito, Osamu Kozan, Hiromi Yamagawa, Dai Nagamatsu, Naoyuki Nishimura, Tohru Manabe   +7 more
doaj   +1 more source

Changes in seed dispersal processes and the potential for between-patch connectivity for an arid land daisy [PDF]

, 2012
Dispersal is a major and critical process in population biology that has been particularly challenging to study. Animals can have major roles in seed dispersal even in species that do not appear specifically adapted to animal-aided dispersal.
Chesson, P., Day, J., Emmerson, L., Facelli, J., Possingham, H.   +4 more
core   +2 more sources

Generalized Mechanism Model for Ecosystem Hysteresis

Advanced Science, EarlyView.
A simplified model examines ecosystem transitions into alternative states after disturbances by leveraging positive and negative feedbacks. It identifies critical tipping points and quantifies hysteresis. Tests conducted on lakes, grasslands, and pitcher‐plant leaves align closely with empirical data and enable the prediction of recovery trajectories ...
Yanbin Hao, Xin Wang, Jie Liu, Mingzi Wu, Jianqing Du, Kai Xue, Xiaoning Song, Xiaoyong Cui, Tong Zhao, Yanfen Wang   +9 more
wiley   +1 more source

A. Area of Scandinavian Glaciation: 2. History of Vegetation and Biostratigraphy [PDF]

Eiszeitalter und Gegenwart, 1973
Kein Abstract verfügbar.
B. Menke, K.-E. Behre
doaj   +1 more source