Results 41 to 50 of about 7,354,206 (251)

Mycorrhizal feedbacks influence global forest structure and diversity

Communications Biology, 2023
One mechanism proposed to explain high species diversity in tropical systems is strong negative conspecific density dependence (CDD), which reduces recruitment of juveniles in proximity to conspecific adult plants.
Camille S. Delavaux, Joseph A. LaManna, Jonathan A. Myers, Richard P. Phillips, Salomón Aguilar, David Allen, Alfonso Alonso, Kristina J. Anderson-Teixeira, Matthew E. Baker, Jennifer L. Baltzer, Pulchérie Bissiengou, Mariana Bonfim, Norman A. Bourg, Warren Y. Brockelman, David F. R. P. Burslem, Li-Wan Chang, Yang Chen, Jyh-Min Chiang, Chengjin Chu, Keith Clay, Susan Cordell, Mary Cortese, Jan den Ouden, Christopher Dick, Sisira Ediriweera, Erle C. Ellis, Anna Feistner, Amy L. Freestone, Thomas Giambelluca, Christian P. Giardina, Gregory S. Gilbert, Fangliang He, Jan Holík, Robert W. Howe, Walter Huaraca Huasca, Stephen P. Hubbell, Faith Inman, Patrick A. Jansen, Daniel J. Johnson, Kamil Kral, Andrew J. Larson, Creighton M. Litton, James A. Lutz, Yadvinder Malhi, Krista McGuire, Sean M. McMahon, William J. McShea, Hervé Memiaghe, Anuttara Nathalang, Natalia Norden, Vojtech Novotny, Michael J. O’Brien, David A. Orwig, Rebecca Ostertag, Geoffrey G. (‘Jess’) Parker, Rolando Pérez, Glen Reynolds, Sabrina E. Russo, Lawren Sack, Pavel Šamonil, I-Fang Sun, Mark E. Swanson, Jill Thompson, Maria Uriarte, John Vandermeer, Xihua Wang, Ian Ware, George D. Weiblen, Amy Wolf, Shu-Hui Wu, Jess K. Zimmerman, Thomas Lauber, Daniel S. Maynard, Thomas W. Crowther, Colin Averill   +74 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Density-dependence in the declining population of the monarch butterfly [PDF]

, 2017
The Eastern monarch butterfly population has significantly declined over the last two decades creating growing concerns around its conservation status. Here, we showed that the overwintering population exhibited a negative density-dependence (i.e.
Myron P. Zalucki, Marini, L., Marini, Lorenzo, Zalucki, M. P., Zalucki, Myron P., Lorenzo Marini   +5 more
core   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Habitat Filtering Covers the Strength of Density Dependence and Functional Density Dependence on Seedling Survival in Cangshan Mountain, Southwest China

, 2023
Conspecific negative density dependence (CNDD) is an important mechanism for species coexistence and community dynamics. Phylogenetic negative density dependence (PNDD) and functional negative density dependence (FNDD) are extensions of CNDD, and many ...
Xiaokang Hu, Fengxian Chen, Liping Wang, Xiaoli Yu, Junjie Wu, Jiwen Sun, Zhe Feng   +6 more
core   +1 more source

Long-term dynamics of density dependence reveals a more stable effect of the neighborhood on tree growth than tree survival.

PLoS ONE
Density dependence is a vital mechanism for explaining tree species diversity. Empirical studies worldwide have demonstrated that neighbor density influences plant survival and growth in various communities.
Liping Wang, Junjie Wu, Fengxian Chen
doaj   +1 more source

Effects of biotic/abiotic factors on the seedling regeneration of Dacrydium pectinatum formations in tropical montane forests on Hainan Island, China

Global Ecology and Conservation, 2020
Exploring natural regeneration facilitates a better understanding of the mechanisms of community assembly and biodiversity formation. However, convincing data on tree regeneration in threatened tropical plant communities are lacking. Dacrydium pectinatum
Haodong Liu, Qiao Chen, Yongfu Chen, Zhiyang Xu, Yunchuan Dai, Yang Liu, Yi Jiang, Xi Peng, Huayu Li, Juan Wang, Hua Liu   +10 more
doaj   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

Experimental and Observational Evidence of Negative Conspecific Density Dependence in Temperate Extomycorrhizal Trees [PDF]

, 2022
Conspecific negative density dependence (CNDD) promotes tree species diversity by reducing recruitment near conspecific adults due to biotic feedbacks from herbivores, pathogens, or competitors.
De La Cruz, Dayna, Orwig, David A., Ayres, Matthew P., Lang, Ashley K., Jevon, Fiona V., Matthes, Jaclyn H., Kouba, Paige V., LaManna, Joseph A., Record, Sydne   +8 more
core  

Among-population variation in density and competitor dependence in amphibian populations

Basic and Applied Ecology
In the Anthropocene, understanding factors regulating natural populations is key to effective conservation, particularly in light of the sixth mass extinction.
Cecilia Bardier, Lea R. Brüllmann, Benedikt R. Schmidt   +2 more
doaj   +1 more source