Seed Dispersal


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Seed Dispersal

 

the expulsion by wind of the upper layer of soil with sown seeds and occasionally even with sprouts; observed in the presence of strong dry winds, so-called dust or black storms, particularly markedly on pulverized, structureless soil.

In seed dispersal, some of the seeds might remain in the soil, but they shift or are pushed into clumps, causing either complete destruction of the planting or uneven distribution of the sprouts. The root system of developing sprouts becomes exposed, and the plant dies. Seed dispersal most often takes place in spring in fields that had lain fallow the previous year and had been seeded with spring crops and in fall on winter sprouts planted on fallow land. Most often seed dispersal is seen in steppe regions. In the USSR it takes place in western Siberia, northern Kazakhstan, Bashkiriia, Stavropol’ Krai, and Krasnodar Krai.

Methods of fighting seed dispersal include planting tree belts and using proper crop rotation and proper systems of soil cultivation and irrigation. The All-Union Scientific Research Institute of Grain Farming in Steppe Regions has worked out methods of cultivating the soil without mold-boards, in which up to 90 percent of the stubble stays on the soil surface, safely guarding the soil from wind erosion.

References in periodicals archive ?
Importantly, where a tree species is common and when seeds are plentiful, seed dispersers may be swamped (Hampe, 2008; Ragusa-Netto, 2016), consequently reducing seed dispersal (Klinger and Rejmanek, 2009; Jansen et al., 2014).
Seed dispersal is considered an important process for determining the spatial structure, dynamics, and composition of plant populations (Heleno et al., 2013; Fonturbel et al., 2015).
Seed dispersal by animals (zoochory) is an important interaction that have a fundamental role in the life cycle of plants, influencing their biology, ecology, genetics and evolution (Herrera, 2002; Correa, Winemiller, Lopez-Fernandez, & Galetti, 2007; Pollux, 2011) and contribute to the biological and functional diversity of plant communities (Aslan, Zavaleta, Tershy, & Croll, 2013), especially in those dominated by animal-mediated dispersal (Schupp, Jordano, & Gomez, 2010).
The scientist said the grey-crowned crane plays an important role in seed dispersal.
The STEM activity implemented with the Year 5 students in the study was based on the work of Pike (2017), who explored using mathematics to support claims about seed dispersal by wind.
pomifera was much smaller than its potential range (Smith and Perino, 1981; Burton, 1990; Barlow, 2000), suggesting it lacked an effective seed dispersal mechanism.
"Seed dispersal is an essential, yet overlooked process of plant demography, but it's difficult to empirically observe, measure and assess its full influence," said Utah State University (USU) ecologist Noelle Beckman.
Yes, these most unwanted insects in our homes are vital in the ecology of the woods, and seed dispersal is just one of their helpful roles.
Higher temperatures accelerate seed dispersal in crop species belonging to the cabbage and mustard plant family, limiting reproductive success, and this effect is mediated by the INDEHISCENT gene, according to a new study.
Dung beetles perform many crucial roles in the ecosystem, from soil enrichment and nutrient cycling to seed dispersal and fly control.
From local to regional scale, they have a role in the distribution of soil nutrients and seed dispersal (Lindenmayer et al.