The Importance of Small-Scale Disturbance for Seedling Establishment in Cirsium Vulgare and Cynoglossum Officinale

1988 ◽  
Vol 76 (2) ◽  
pp. 383 ◽  
Author(s):  
Peter G. L. Klinkhamer ◽  
Tom J. De Jong
Keyword(s):  
Seedling Establishment ◽  
Small Scale ◽  
Cynoglossum Officinale ◽  
Cirsium Vulgare

Small-scale Environmental Heterogeneity and Spatiotemporal Dynamics of Seedling Establishment in a Semiarid Degraded Ecosystem

Ecosystems ◽  
2003 ◽  
Vol 6 (7) ◽  
pp. 630-643 ◽  
Author(s):  
Fernando T. Maestre ◽  
Jordi Cortina ◽  
Susana Bautista ◽  
Juan Bellot ◽  
Ramon Vallejo
Keyword(s):  
Seedling Establishment ◽  
Environmental Heterogeneity ◽  
Spatiotemporal Dynamics ◽  
Small Scale ◽  
Degraded Ecosystem

The colonization of dung pats and molehills in permanent pastures

1990 ◽  
Vol 68 (8) ◽  
pp. 1706-1711 ◽  
Author(s):  
Roberta Parish ◽  
Roy Turkington
Keyword(s):  
Key Words ◽  
Lolium Perenne ◽  
Trifolium Repens ◽  
Seedling Establishment ◽  
Dactylis Glomerata ◽  
Small Scale ◽  
Holcus Lanatus ◽  
Community Heterogeneity ◽  
Disturbed Areas ◽  
Different Ages

The colonization of areas affected by molehills and dung pats was monitored in three adjacent pastures of different ages. Seedling establishment was infrequent, and most colonization took place by rhizomes, e.g., Agropyron repens and Poa compressa, or by stolons, e.g., Trifolium repens. Tillering species, e.g., Dactylis glomerata, Holcus lanatus, and Lolium perenne, were poor colonizers of disturbed areas. Invasion of gaps by a species was not proportional to its abundance in the pasture. Individual plants are eliminated at random by the disturbances. Small-scale disturbances tend to decrease community heterogeneity. Key words: disturbance, colonization, dung, molehill, pasture.

An experimental test of the relationship between small scale topography and seedling establishment in primary succession

Plant Ecology ◽  
2013 ◽  
Vol 214 (8) ◽  
pp. 1007-1015 ◽  
Author(s):  
Bryndís Marteinsdóttir ◽  
Thóra Ellen Thórhallsdóttir ◽  
Kristín Svavarsdóttir
Keyword(s):  
Experimental Test ◽  
Seedling Establishment ◽  
Primary Succession ◽  
Small Scale ◽  
The Relationship

The effects and implications of disturbance of mycorrhizal mycelial systems

1988 ◽  
Vol 94 ◽  
pp. 13-24 ◽  
Author(s):  
D. J. Read ◽  
C. P. D. Birch
Keyword(s):  
Plant Communities ◽  
Seedling Establishment ◽  
Small Scale ◽  
Inoculum Potential ◽  
Mycorrhizal Infection ◽  
Natural Plant ◽  
Vesicular Arbuscular ◽  
Mycelial Network ◽  
Infection Processes ◽  
The Impact

SynopsisThe likely consequences of disturbance of the mycorrhizal mycelial network in soil are considered, emphasis being placed on the impact of small-scale events upon infection in vesicular-arbuscular and ectomycorrhizal systems. The importance of the intact network is stressed and the effects of its disruption upon infection processes and upon the nutrition of natural plant communities and of crops is analysed. It is considered that the most serious effect of disturbance will be to reduce the inoculum potential of the fungi and hence to decrease the vigour of infections that occur. The impact of these effects is likely to be felt most seriously at the stage of seedling establishment, and the interactions between disturbance events, mycorrhizal infection and plant successional processes are discussed.

Growth and Nutrient Accumulation of the Biennials Cirsium vulgare and Cynoglossum officinale under Nutrient-Rich Conditions

Oikos ◽  
1987 ◽  
Vol 48 (1) ◽  
pp. 62 ◽  
Author(s):  
Tom J. de Jong ◽  
Peter G. L. Klinkhamer ◽  
Henk W. Nell ◽  
Sep R. Troelstra
Keyword(s):  
Nutrient Accumulation ◽  
Cynoglossum Officinale ◽  
Cirsium Vulgare

Reasons to strike first

2019 ◽  
Vol 42 ◽  
Author(s):  
William Buckner ◽  
Luke Glowacki
Keyword(s):  
Intergroup Conflict ◽  
Small Scale

Abstract De Dreu and Gross predict that attackers will have more difficulty winning conflicts than defenders. As their analysis is presumed to capture the dynamics of decentralized conflict, we consider how their framework compares with ethnographic evidence from small-scale societies, as well as chimpanzee patterns of intergroup conflict. In these contexts, attackers have significantly more success in conflict than predicted by De Dreu and Gross's model. We discuss the possible reasons for this disparity.

Exploring Coronal Structures with SOHO

2000 ◽  
Vol 179 ◽  
pp. 403-406
Author(s):  
M. Karovska ◽  
B. Wood ◽  
J. Chen ◽  
J. Cook ◽  
R. Howard
Keyword(s):  
Solar Corona ◽  
Image Enhancement ◽  
Coronal Mass Ejections ◽  
Dynamical Evolution ◽  
Small Scale ◽  
Low Contrast ◽  
Contrast Structures ◽  
Scale Structures ◽  
Small Scale Structures ◽  
Coronal Structures

AbstractWe applied advanced image enhancement techniques to explore in detail the characteristics of the small-scale structures and/or the low contrast structures in several Coronal Mass Ejections (CMEs) observed by SOHO. We highlight here the results from our studies of the morphology and dynamical evolution of CME structures in the solar corona using two instruments on board SOHO: LASCO and EIT.

Scanning tunneling microscopy and atomic force microscopy: New tools for biology

1989 ◽  
Vol 47 ◽  
pp. 778-779
Author(s):  
CE Bracker ◽  
P. K. Hansma
Keyword(s):  
Physical Property ◽  
Scanning Probe ◽  
Scanning Tunneling ◽  
Small Scale ◽  
Tunneling Microscopy ◽  
Force Microscopy ◽  
New Family ◽  
Small Probe ◽  
Atomic Force ◽  
Transmission Electron

A new family of scanning probe microscopes has emerged that is opening new horizons for investigating the fine structure of matter. The earliest and best known of these instruments is the scanning tunneling microscope (STM). First published in 1982, the STM earned the 1986 Nobel Prize in Physics for two of its inventors, G. Binnig and H. Rohrer. They shared the prize with E. Ruska for his work that had led to the development of the transmission electron microscope half a century earlier. It seems appropriate that the award embodied this particular blend of the old and the new because it demonstrated to the world a long overdue respect for the enormous contributions electron microscopy has made to the understanding of matter, and at the same time it signalled the dawn of a new age in microscopy. What we are seeing is a revolution in microscopy and a redefinition of the concept of a microscope.Several kinds of scanning probe microscopes now exist, and the number is increasing. What they share in common is a small probe that is scanned over the surface of a specimen and measures a physical property on a very small scale, at or near the surface. Scanning probes can measure temperature, magnetic fields, tunneling currents, voltage, force, and ion currents, among others.

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