Results 151 to 160 of about 906,697 (190)

Seed bank versus seed rain in the regeneration of a tropical pioneer tree

Oecologia, 1990
We used the tropical pioneer tree, Cecropia obtusifolia to evaluate the relative importance of different sources of seeds in the regeneration of species that depend on ephemeral sites. We studied seed production in a population established in a 5 ha plot, and dispersal, dormancy and seed predation in two recent treefall gaps (35 years since disturbed ...
Elena R, Alvarez-Buylla, Miguel, Martínez-Ramos   +1 more
openaire   +2 more sources

Formation of a Rain Shower by Salt Seeding

Journal of Applied Meteorology, 1971
Abstract Salt seeding took place below one end of a line of stratocumulus clouds with 350 lb of NaCl released. Cloud base was 9000 ft and cloud tops were at 15 to 18,000 ft above sea level. Cloud top temperature was near −2C and updraft speeds below the hue were near 3 m sec−1.
K. R. Biswas, A. S. Dennis
openaire   +1 more source

The Relationship Between Seed Rain and the Soil Seed Bank in a Temperate Rainforest Stand Near Auckland, New Zealand

New Zealand Journal of Botany, 1996
An open access copy of this article is available from the publishers website.Composition of the germinable seed rain and the soil seed bank is documented for five sites in temperate rainforest near Auckland, New Zealand, in an effort to understand the ...
Neal Enright
exaly   +1 more source

Effects of bamboo stands on seed rain and seed limitation in a rainforest

Forest Ecology and Management, 2009
Bamboos often negatively affect tree recruitment, survival, and growth, leading to arrested tree regeneration in forested habitats. Studies so far have focused on the effects of bamboos on the performance of seedlings and saplings, but the influence of bamboos on forest dynamics may start very early in the forest regeneration process by altering seed ...
Rother, Debora C., Rodrigues, Ricardo R., Pizo, Marco A.   +2 more
openaire   +2 more sources

A seed trap for monitoring the seed rain in terrestrial communities

Canadian Journal of Botany, 1995
Monitoring the seed rain of a species, population, or community is important to quantify that component of life history that follows anthesis yet precedes establishment in the seed bank or as a seedling. I have developed a unique seed trap that is ideal for monitoring the seed rain of a grassland community. The trap consists of a 10-cm diameter funnel
openaire   +1 more source

Dispersal pathways, seed rains, and the dynamics of larval behavior

Ecology, 2009
Dispersing propagules (larvae, seeds, and spores) establish and maintain populations, which serve as templates for subsequent species interactions. Connectivity among demes derives, in large part, from connectivity between consecutive steps, release, transport, and settlement, in dispersal pathways.
Richard K, Zimmer, Jonathan T, Fingerut, Cheryl Ann, Zimmer   +2 more
openaire   +2 more sources

Weed seed rain interception by grass cover depends on seed traits

Weed Research, 2014
Summary Weed management requires a better understanding of the dynamics of the weed seedbank, which is a primary source of weeds in a field. Seeds reaching the ground after seed rain replenish the seedbank and therefore contribute to future weed infestations.
Doisy, Diana, Colbach, Nathalie, Roger-Estrade, Jean, Mediene, Safia   +3 more
openaire   +3 more sources

Invertebrate Seed Predators Reduce Weed Emergence Following Seed Rain

Weed Science, 2016
Weeds are selected to produce overwhelming propagule pressure, and while vertebrate and invertebrate seed predators destroy a large percentage of seeds, their ecosystem services may not be sufficient to overcome germination site limitations. Cover crops are suggested to facilitate seed predation, but it is difficult to disentangle reductions in weed ...
Carmen K. Blubaugh, Ian Kaplan
openaire   +1 more source

Influence of simulated seed rain on the seed bank of wild-proso millet

Weed Science, 2002
Abstract A field experiment was conducted between 1988 and 1993 to determine the number of wild-proso millet seed that could be returned to the soil without increasing future soil seed bank populations. The first seed bank (1988) was 15,300 seed m−2 and ranged from 14,000 to 21,000 seed m−2, which represented a high seed population for the area.
Bill J. Williams, R. Gordon Harvey
openaire   +1 more source

The role of the seed bank, seed rain and the timing of disturbance in gap regeneration

Journal of Vegetation Science, 2005
Abstract. Question: Does the degree and timing of disturbance contribute significantly to the pattern and process of regeneration in plant communities as a consequence of the availability and number of species of propagules present?Location: Acid grassland at 230 m a.s.l., eastern Scotland, UK.Methods : Plots were surface disturbed or had their soil
R.J. Pakeman, J.L. Small
openaire   +1 more source