Results 91 to 100 of about 5,915,013 (307)

Landscape heterogeneity and multiple scale nature of ecological continuity in planning for equitable landscape change

, 1999
The changes in heterogeneity over time and the hierarchical relations existing between a range of spatial scales, studied in a previous work, provided the knowledge and data base for integrated planning at the local scale.
MAIROTA P, MININNI, MARIAVALERIA, PAPADIMITRIOU F.   +2 more
core   +1 more source

Are individual based models a suitable approach to estimate population vulnerability? - a case study [PDF]

Computational Ecology and Software, 2011
European populations of the Large Blue Butterfly Maculinea arion have experienced severe declines in the last decades, especially in the northern part of the species range.
Eva Maria Griebeler
doaj  

Heterogeneity promotes resilience in restored prairie: Implications for the environmental heterogeneity hypothesis

Ecological Applications
AbstractEnhancing resilience in formerly degraded ecosystems is an important goal of restoration ecology. However, evidence for the recovery of resilience and its underlying mechanisms require long‐term experiments and comparison with reference ecosystems.
Ashley A. Wojciechowski, John M. Blair, Scott L. Collins, Sara G. Baer   +3 more
openaire   +2 more sources

Environmental harshness drives spatial heterogeneity in biotic resistance [PDF]

, 2018
Ecological communities often exhibit greater resistance to biological invasions when these communities consist of species that are not closely related. The effective size of this resistance, however, varies geographically. Here we investigate the drivers
Guo,Qinfeng, Potter, Kevin, Jo, Insu, Basil V. Iannone III, Kevin M. Potter, Jo,Insu, Songlin Fei, Qinfeng Guo, Iannone, Basil V.,, Fei,Songlin, Iannone III, Basil V., Oswalt,Christopher, Potter, Kevin M., Guo, Qinfeng, Insu Jo, Potter,Kevin, Oswalt, Christopher, Oswalt, Christopher M., Fei, Songlin, Iannone III,Basil, Christopher M. Oswalt   +20 more
core   +3 more sources

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Responses of Macroinvertebrate Communities to Heterogeneity Among Typical Reaches in the Upper Yangtze River

Ecology and Evolution
Benthic macroinvertebrates are important indicators of river ecosystem health, and their spatial distribution is highly sensitive to environmental heterogeneity. In large mountainous rivers characterized by complex geomorphology and strong hydrodynamics,
Yang Wei, Wang Si‐Yuan, Zhang Xian‐Bing, Zhang Yang‐Chun, Chen Zi‐Wei, Yang Zhong‐Chao, Yang Sheng‐Fa, Chen Qi‐Liang, Xie Jia‐Hui, Tan Li‐Wei   +9 more
doaj   +1 more source

Genetic structure and evolutionary history of three alpine sclerophyllous oaks in East Himalaya-Hengduan Mountains and adjacent regions

Frontiers in Plant Science, 2016
The East Himalaya-Hengduan Mountains (EH-HM) region has a high biodiversity and harbours numerous endemic alpine plants. This is probably the result of combined orographic and climate oscillations occurring since late Tertiary.
Li Feng, Qi-Jian Zheng, Zeng-Qiang Qian, Jia Yang, Yan-Ping Zhang, Zhonghu Li, Guifang Zhao   +6 more
doaj   +1 more source

Appendix A. A simulation model with environmental heterogeneity.

, 2016
A simulation model with environmental ...
Mark Vellend (184017)
core   +1 more source

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

, 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 ...
John O'Halloran, Sergio García-Tejero (5925485), John R. Spence (2906348), John R Spence, Bourassa, Stephane, Anne Oxbrough (5925491), O'Halloran, John, O\u27Halloran, John, Spence, John R, Oxbrough, Anne; id_orcid, Oxbrough, Anne, Stephane Bourassa (5925488), Sergio García-Tejero, Anne Oxbrough, Stephane Bourassa, Garcia-Tejero, Sergio, John O’Halloran (2215750), Spence, John R., O'Halloran, John   +18 more
core   +2 more sources