Results 31 to 40 of about 117,912 (295)

Lessons from the past: Biotic recoveries from mass extinctions [PDF]

Proceedings of the National Academy of Sciences, 2001
Although mass extinctions probably account for the disappearance of less than 5% of all extinct species, the evolutionary opportunities they have created have had a disproportionate effect on the history of life. Theoretical considerations and simulations have suggested that the empty niches created by a mass extinction should refill rapidly after ...
openaire   +2 more sources

Biotic carbon feedbacks in a materially-closed soil-vegetation-atmosphere system [PDF]

, 2012
The magnitude and direction of the coupled feedbacks between the biotic and abiotic components of the terrestrial carbon cycle is a major source of uncertainty in coupled climate–carbon-cycle models1, 2, 3.
BE Medlyn, E Ainsworth, FB Taub, GD Farquhar, J Charney, J Cohen, J Lawton, J Lloyd, J Morison, JA Subke, M Heimann, M Lukac, M Nelson, M Nelson, MV Wilson, N Nakicenovic, P Cadule, P Friedlingstein, P Friedlingstein, P Meir, R Knutti, R Wheeler, RDCR Team, T Hefin Jones, WF Dempster, WM Knott   +25 more
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Ferns as facilitators of community recovery following biotic upheaval

BioScience
Abstract The competitive success of ferns has been foundational to hypotheses about terrestrial recolonization following biotic upheaval, from wildfires to the Cretaceous–Paleogene asteroid impact (66 million years ago). Rapid fern recolonization in primary successional environments has been hypothesized to be driven by ferns’ high spore
Lauren Azevedo-Schmidt, Ellen D Currano, Regan E Dunn, Elizabeth Gjieli, Jarmila Pittermann, Emily Sessa, Jacquelyn L Gill   +6 more
openaire   +3 more sources

Patterns of fossil distributions within their environmental context from the Middle Triassic in South Canyon, Central Nevada, USA

Journal of Palaeogeography, 2014
The Middle Triassic records the return of diverse marine communities after the severe effects of the end-Permian mass extinction. This diversification leads to the Mesozoic/modern adaptive radiation resulting in substantial changes in marine communities ...
Pedro M. Monarrez, Nicole Bonuso
doaj   +1 more source

New keratose sponges after the end‐Permian extinction provide insights into biotic recoveries

Geobiology, 2023
AbstractWe challenge the prevailing view that the end‐Permian extinction impeded the Triassic evolution of sponges. Here, we report a deep‐water community dominated by abundant keratose sponges in the lowest Triassic strata from Southwest China. The sponge fossils occur as dark elliptical imprints in mudstone with distinct oscula on their tops.
Siqi Wu, Joachim Reitner, David A. T. Harper, Jianxin Yu, Zhong‐Qiang Chen   +4 more
openaire   +3 more sources

Persistence of Urban Stream Syndrome Effects from Point Source and Non-Point Source Pollutants [PDF]

, 2017
In a previous study, Sager Creek, a small 1st-3rd order stream in northwest Arkansas was shown to be negatively impacted by urban land usage within the watershed, producing a stream that exhibited several indicators of urban stream syndrome.
Wakefield, T. S.
core   +3 more sources

An unusual growth form of Cladonia furcata: The trampling-resistant primary thallus colonizing a paved pathway [PDF]

, 1998
Lichens are well known to be susceptible to damage by trampling. Fruticose species, with their highly branched structure, are particularly sensitive and Bayfield et al. (1981) described substantial damage to Cladonia uncialis, C.
Green, T.G. Allan, Lange, Otto L., Türk, Roman   +2 more
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Impacts of temperature and rootstocks on tomato grafting success rates [PDF]

, 2020
Numerous studies have highlighted the merits of grafting to improve the performance of vegetable crops. However, the technique is hindered by several obstacles, including the synchronization of seedlings used as scions and rootstocks, and the effects of ...
Huat, Joël, Nordey, Thibault, Shem, Elias   +2 more
core   +1 more source

Deoxyribonucleic acid extraction for invertebrate metabarcoding from stream sediment and implication to biotic indices [PDF]

Global Journal of Environmental Science and Management
BACKGROUND AND OBJECTIVES: Environmental deoxyribonucleic acid metabarcoding has become a powerful tool for assessing invertebrate biodiversity in stream sediments, providing a non-invasive approach for ecological monitoring.
M.H.F. Amin, H.W. Kim, I.A. Pratiwi, A.R. Kim, H.E. Kang, N.I. Oktavitri, T. Soedarti   +6 more
doaj   +1 more source

Environmental Cues Contribute to Dynamic Plasma Membrane Organization of Nanodomains Containing Flotillin-1 and Hypersensitive Induced Reaction-1 Proteins in Arabidopsis thaliana

Frontiers in Plant Science, 2022
Plasma membranes are heterogeneous and contain multiple functional nanodomains. Although several signaling proteins have been shown to function by moving into or out of nanodomains, little is known regarding the effects of environmental cues on ...
Changwen Xu, Changwen Xu, Sammar Abbas, Sammar Abbas, Hongping Qian, Hongping Qian, Meng Yu, Xi Zhang, Xi Zhang, Xiaojuan Li, Xiaojuan Li, Yaning Cui, Yaning Cui, Jinxing Lin, Jinxing Lin   +14 more
doaj   +1 more source