Results 31 to 40 of about 998 (184)

Secondary seed dispersal of Ricinus communis Linnaeus (Euphorbiaceae) by ants in secondary growth vegetation in Minas Gerais Dispersão secundária de sementes de Ricinus communis Linnaeus (Euphorbiaceae) por formigas em vegetação secundária em Minas Gerais

open access: yesRevista Árvore, 2007
In this study, I tested the efficacy of ants as secondary seed dispersers of Ricinus communis in southeastern Brazil. In a natural population of 143 individuals, I determined the ballistic dispersal distance for 62 seeds and 100 additional seeds were ...
Mário Marcos do Espírito Santo
doaj   +1 more source

The role of insects in pollination and dissemination of some plant species in high-mountains of the Ukrainian Carpathians

open access: yesБіологічні студії, 2016
On the example of 5 species of herbaceous flowering plants of the Ukrainian Carpathians it is shown that they are in close relationships with a number of insects, some of which are involved into pollination and hence in the formation of mature seeds.
O. S. Sachok, I. J. Tsaryk
doaj   +1 more source

Questioning the mutual benefits of myrmecochory: a stable isotope‐based experimental approach [PDF]

open access: yesEcological Entomology, 2013
Mutualisms play a key part in ecological systems and drive the evolution of much of the world's biological diversity. Among them, myrmecochory, seed dispersal by ants, is a worldwide mechanism throughout many ecosystems.
Caut, Stéphane   +3 more
openaire   +2 more sources

Fruit and seed structural characteristics and seed dispersal in Mercurialis annua L. (Euphorbiaceae)

open access: yesActa Societatis Botanicorum Poloniae, 2014
The fruit of Mercurialis annua L. is a two-seeded capsule with a caruncle, a small appendage which arises from the outer integument in the micropylar area. The inner integument has a thick layer of Malpighian-like cells, interrupted at the micropyle by a
Marcello Lisci, Ettore Pacini
doaj   +1 more source

Extreme fire severity interacts with seed traits to moderate post-fire species assemblages. [PDF]

open access: yesAm J Bot
Abstract Premise Climate change is globally pushing fire regimes to new extremes, with unprecedented large‐scale severe fires. Persistent soil seed banks are a key mechanism for plant species recovery after fires, but extreme fire severity may generate soil temperatures beyond thresholds seeds are adapted to.
Sano M, Tangney R, Thomsen A, Ooi MKJ.
europepmc   +2 more sources

Opening myrmecochory's black box: what happens inside the ant nest?

open access: yesEcological Research, 2010
Abstract In the process of seed dispersal by ants (myrmecochory), foragers bring diaspores back to their nest, then eat the elaiosome and usually reject viable seeds outside the nest. Here, we investigate what happens inside the nest, a barely known stage of the myrmecochory process, for two seed species (
Servigne, Pablo, Detrain, Claire
openaire   +2 more sources

Does Atta laevigata (Smith, 1858) act as Solanum lycocarpum seed dispersers?

open access: yesSociobiology, 2016
Ants can act as seed dispersers, modifying their distribution, affecting the reproductive success and the vegetation spatial structure. The leaf-cutting ants function, as dispersers of non-myrmecochorous plants, is little known.
Paulo Roberto de Abreu Tavares   +2 more
doaj   +1 more source

Effects of seed morphology and elaiosome chemical composition on attractiveness of five Trillium species to seed‐dispersing ants

open access: yesEcology and Evolution, 2020
Morphological and chemical attributes of diaspores in myrmecochorous plants have been shown to affect seed dispersal by ants, but the relative importance of these attributes in determining seed attractiveness and dispersal success is poorly understood ...
Chelsea N. Miller   +2 more
doaj   +1 more source

The Importance of Poneromorph Ants for Seed Dispersal in Altered Environments

open access: yesSociobiology, 2013
Changes in species composition and an increase in the probability of local or regional extinctions alone are considered alarming consequences of human disturbances. However, these changes bring other damages that have passed unnoticed by scientists, such
Fabio Souto Almeida   +2 more
doaj   +3 more sources

Taxonomic composition and ecological characteristics of the endemic flora of the lower Duero Basin (Iberian Peninsula) [PDF]

open access: yes, 2004
The taxonomical composition and an analysis of four ecological characteristics of the 46 endemic species occurring in the lower Duero Basin (CW Iberian Peninsula) have been made.
Aguiar, Carlos   +4 more
core   +1 more source

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