Results 71 to 80 of about 5,540,276 (290)

Natural succession and clearcutting as drivers of environmental heterogeneity and beta diversity in North American boreal forests. [PDF]

PLoS ONE, 2018
Clear-cutting alters natural ecosystem processes by reducing landscape heterogeneity. It is the dominant harvesting technique across the boreal zone, yet understanding of how environmental heterogeneity and beta diversity are structured in forest ...
Sergio García-Tejero, John R Spence, John O'Halloran, Stephane Bourassa, Anne Oxbrough   +4 more
doaj   +1 more source

Unimodal Relationships of Understory Alpha and Beta Diversity along Chronosequence in Coppiced and Unmanaged Beech Forests

Diversity, 2020
Patterns of diversity across spatial scales in forest successions are being overlooked, despite their importance for developing sustainable management practices. Here, we tested the recently proposed U-shaped biodiversity model of forest succession.
S. Bartha, R. Canullo, S. Chelli, G. Campetella   +3 more
semanticscholar   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Potent in vitro and in vivo antifungal activity of a small molecule host defense peptide mimic through a membrane-active mechanism

Scientific Reports, 2017
Lethal systemic fungal infections of Candida species are increasingly common, especially in immune compromised patients. By in vitro screening of small molecule mimics of naturally occurring host defense peptides (HDP), we have identified several active ...
Lorenzo P. Menzel, Hossain Mobaswar Chowdhury, Jorge Adrian Masso-Silva, William Ruddick, Klaudia Falkovsky, Rafael Vorona, Andrew Malsbary, Kartikeya Cherabuddi, Lisa K. Ryan, Kristina M. DiFranco, David C. Brice, Michael J. Costanzo, Damian Weaver, Katie B. Freeman, Richard W. Scott, Gill Diamond   +15 more
doaj   +1 more source

Archipelago reserves, a new option to protect montane entomofauna and beta-diverse ecosystems

Revista Mexicana de Biodiversidad, 2018
Beta diversity is often a dominant characteristic in mountain systems and naturally fragmented ecosystems. However, natural protected areas are traditionally designed to protect ecosystems with high alpha and low beta diversity.
Victor Moctezuma, Gonzalo Halffter, Alfonsina Arriaga-Jiménez   +2 more
doaj   +1 more source

Temporal beta diversity of lake plants is determined by concomitant changes in environmental factors across decades

Journal of Ecology, 2020
To comprehensively understand the impact of anthropogenic activities on biodiversity, we must understand how biodiversity has changed over time and what are the underlying processes.
Marja Lindholm, J. Alahuhta, J. Heino, H. Toivonen   +3 more
semanticscholar   +1 more source

Identification of a Shiga toxin A‐derived peptide internalized into Gb3 receptor‐bearing cells via interaction with the Shiga toxin B subunit

FEBS Letters, EarlyView.
The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi, João C. Encarnação, Valeria Napolitano, Grzegorz Dubin, Grzegorz Popowicz, Karl Andersson, U. Helena Danielson   +6 more
wiley   +1 more source

Genotypic-Phenotypic Diversity in Beta Thalassemia

Mediterranean Journal of Hematology and Infectious Diseases, 2014
The remarkable variability in clinical severity of the thalassemia reflects both genetic and environmental factors. It is becoming apparent that the genetic element involves many loci, some of which are directly involved with the basic defect in globin ...
Ravindra Kumar, Vandana Arya
doaj  

Taxonomic and Functional Beta Diversity Patterns and Their Driving Factors of the Fish Assemblages Around Marine Islands

Journal of Marine Science and Engineering
Beta diversity is an important way to analyze community assembly mechanisms in different habitats or along environmental gradients. However, research on marine fish assemblages around islands has lagged, especially for functional beta diversity.
Guangjie Fang, Jun Liang, Rijin Jiang, Yazhou Zhang, Junlin Chen, Chuanxi Chen, Mingda Yang, Yongdong Zhou   +7 more
doaj   +1 more source

Climate and geographic distance are more influential than rivers on the beta diversity of passerine birds in Amazonia

Ecography, 2020
Variation in the spatial structure of communities in terms of species composition (beta diversity) is affected by different ecological processes, such as environmental filtering and dispersal limitation.
I. Fluck, N. Cáceres, C. Hendges, M. N. Brum, C. Dambros   +4 more
semanticscholar   +1 more source