The Role of Space in Plant Population Dynamics: Annual Weeds as an Example

Oikos ◽  
1995 ◽  
Vol 74 (3) ◽  
pp. 377 ◽  
Author(s):  
Jacco Wallinga
Keyword(s):  
Population Dynamics ◽  
Plant Population ◽  
Plant Population Dynamics ◽  
Annual Weeds

scholarly journals Introduction to the Special Issue: The role of seed dispersal in plant populations: perspectives and advances in a changing world

AoB Plants ◽  
2020 ◽  
Vol 12 (2) ◽  
Author(s):  
Noelle G Beckman ◽  
Clare E Aslan ◽  
Haldre S Rogers
Keyword(s):  
Population Dynamics ◽  
Seed Dispersal ◽  
Plant Community ◽  
Management Strategies ◽  
Plant Population ◽  
Plant Population Dynamics ◽  
Special Issue ◽  
Plant Populations ◽  
Conservation And Management

Abstract Despite the importance of seed dispersal as a driving process behind plant community assembly, our understanding of the role of seed dispersal in plant population persistence and spread remains incomplete. As a result, our ability to predict the effects of global change on plant populations is hampered. We need to better understand the fundamental link between seed dispersal and population dynamics in order to make predictive generalizations across species and systems, to better understand plant community structure and function, and to make appropriate conservation and management responses related to seed dispersal. To tackle these important knowledge gaps, we established the CoDisperse Network and convened an interdisciplinary, NSF-sponsored Seed Dispersal Workshop in 2016, during which we explored the role of seed dispersal in plant population dynamics (NSF DEB Award # 1548194). In this Special Issue, we consider the current state of seed dispersal ecology and identify the following collaborative research needs: (i) the development of a mechanistic understanding of the movement process influencing dispersal of seeds; (ii) improved quantification of the relative influence of seed dispersal on plant fitness compared to processes occurring at other life history stages; (iii) an ability to scale from individual plants to ecosystems to quantify the influence of dispersal on ecosystem function; and (iv) the incorporation of seed dispersal ecology into conservation and management strategies.

scholarly journals Altitude, habitat type and herbivore damage interact in their effects on plant population dynamics

PLoS ONE ◽  
2018 ◽  
Vol 13 (12) ◽  
pp. e0209149 ◽  
Author(s):  
Tomáš Dostálek ◽  
Maan Bahadur Rokaya ◽  
Zuzana Münzbergová
Keyword(s):  
Population Dynamics ◽  
Habitat Type ◽  
Plant Population ◽  
Plant Population Dynamics ◽  
Herbivore Damage

scholarly journals Climate manipulations differentially affect plant population dynamics within versus beyond northern range limits

2020 ◽  
Author(s):  
Paul B. Reed ◽  
Megan L. Peterson ◽  
Laurel E. Pfeifer‐Meister ◽  
William F. Morris ◽  
Daniel F. Doak ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Plant Population ◽  
Range Limits ◽  
Plant Population Dynamics

Effects of Sheep Grazing Astrebla Grasslands in Central Western Queensland. Iii. Dynamics of Astrebla Spp. Under Grazing and Exclosure Between 1975 and 1986.

1991 ◽  
Vol 13 (1) ◽  
pp. 36 ◽  
Author(s):  
DM Orr ◽  
CJ Evenson
Keyword(s):  
Population Dynamics ◽  
Seed Production ◽  
Basal Area ◽  
Summer Rainfall ◽  
High Variability ◽  
Plant Population ◽  
Sheep Grazing ◽  
Plant Population Dynamics ◽  
Winter Rainfall ◽  
Plant Populations

The basal area, yield and plant populations of Astrebla spp. were monitored under grazing and exclosure in Astrebla grasslands between 1975 and 1986. This study was undertaken to develop an understanding of how Astrebla spp. respond to grazing, particularly in relation to the high variability of rainfall. Basal area and yield of Astrebla spp. varied widely between years in response to summer rainfall, with few differences between exclosure and grazing. The failure of summer rainfall resulted in increased utilization of Astrebla spp. but this effect was partially offset in some years by the growth of forb species following winter rainfall. Grazing stimulated the recruitment of Astrebla spp. seedlings by increasing the density of inflorescences which, in turn, increased seed production. Survival of seedling cohorts depended on adequate summer rainfall and grazing tended to enhance cohort survival. There was a greater plant flux under grazing than under exclosure. It was concluded that rainfall is the major factor influencing the biomass and plant population dynamics of Astrebla spp. and that grazing up to about 30% utilization is not detrimental to Astrebla spp.

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