scholarly journals Harvester ant seed removal in an invaded sagebrush ecosystem: Implications for restoration

2020 ◽  
Vol 10 (24) ◽  
pp. 13731-13741
Author(s):  
Kelsey E. Paolini ◽  
Matthew Modlin ◽  
Alexis A. Suazo ◽  
David S. Pilliod ◽  
Robert S. Arkle ◽  
...  
Keyword(s):  
Seed Removal ◽  
Sagebrush Ecosystem ◽  
Harvester Ant

scholarly journals Effect of Barley Sowing Density on the Integrated Weed Management of Lolium rigidum (Annual Ryegrass) in Mediterranean Dryland: A Modeling Approach

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1565
Author(s):  
María Belén D’Amico ◽  
Guillermo R. Chantre ◽  
Guillermo L. Calandrini ◽  
José L. González-Andújar
Keyword(s):  
Weed Management ◽  
Life Cycles ◽  
Integrated Weed Management ◽  
Future Research ◽  
Seed Removal ◽  
Weed Infestation ◽  
High Control ◽  
Weed Dynamics ◽  
The Impact

Population models are particularly helpful for understanding long-term changes in the weed dynamics associated with integrated weed management (IWM) strategies. IWM practices for controlling L. rigidum are of high importance, mainly due to its widespread resistance that precludes chemical control as a single management method. The objective of this contribution is to simulate different IWM scenarios with special emphasis on the impact of different levels of barley sowing densities on L. rigidum control. To this effect, a weed–crop population model for both L. rigidum and barley life cycles was developed. Our results point out: (i) the necessity of achieving high control efficiencies (>99%), (ii) that the increase of twice the standard sowing density of barley resulted in a reduction of 23.7% of the weed density, (iii) non-herbicide-based individual methods, such as delayed sowing and weed seed removal at harvest, proved to be inefficient for reducing drastically weed population, (iv) the implementation of at least three control tactics (seed removal, delay sowing and herbicides) is required for weed infestation eradication independently of the sowing rate, and (v) the effect of an increase in the sowing density is diluted as a more demanding weed control is reached. Future research should aim to disentangle the effect of different weed resistance levels on L. rigidum population dynamics and the required efficiencies for more sustainable IWM programs.

Living with exotic annual grasses in the sagebrush ecosystem

2021 ◽  
Vol 288 ◽  
pp. 112417
Author(s):  
Kirk W. Davies ◽  
Elizabeth A. Leger ◽  
Chad S. Boyd ◽  
Lauren M. Hallett
Keyword(s):  
Sagebrush Ecosystem ◽  
Annual Grasses ◽  
Exotic Annual Grasses

scholarly journals Can variation in seed removal patterns of Neotropical pioneer tree species be explained by local ant community composition?

Biotropica ◽  
2021 ◽  
Author(s):  
Selina A. Ruzi ◽  
Paul‐Camilo Zalamea ◽  
Daniel P. Roche ◽  
Rafael Achury ◽  
James W. Dalling ◽  
...  
Keyword(s):  
Community Composition ◽  
Tree Species ◽  
Seed Removal ◽  
Ant Community ◽  
Pioneer Tree Species ◽  
Pioneer Tree

scholarly journals Investigations in plant commonness and rarity: a comparison of seed removal patterns in the widespread Jatropha standleyi and the endemic J. chamelensis (Euphorbiaceae)

2000 ◽  
Vol 71 (3) ◽  
pp. 501-512 ◽  
Author(s):  
CHRISTOPHER D. PIRIE ◽  
SUZANNAH WALMSLEY ◽  
ROBERT INGLE ◽  
ALFREDO PÉREZ JIMÉNEZ ◽  
ARTURO SOLIS MAGALLANES ◽  
...  
Keyword(s):  
Seed Removal ◽  
Commonness And Rarity
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