Results 21 to 30 of about 12,453 (202)

Pollen: ovule ratio and its relationship with other reproductive traits in some Passiflora species (Passifloraceae) [PDF]

open access: yes, 2014
The pollen/ovule (P/O) ratio has been used as predictor of the reproductive system of angiosperms (lowest P/O values correspond to obligate autogamous species while the highest correlate with obligate xenogamous species) but it does not keep for all the ...
Amela Garcia, Maria Teresa   +2 more
core   +1 more source

The importance of oligosulfides in the attraction of fly pollinators to the brood-site deceptive species Jaborosa rotacea (Solanaceae). [PDF]

open access: yes, 2013
Premise of research. Brood-site deceptive flowers use dishonest signals?especially floral odors that mimic oviposition substrates?to attract and deceive saprophilous insects to pollinate them.
Cocucci, Andrea Aristides   +2 more
core   +2 more sources

PADRÃO DE DISTRIBUIÇÃO ESPACIAL DE Geuipa americana L. (RUBIACEAE) EM DUAS POPULAÇÕES DE MATA RlPÁRIA DO RIO MOJI-GUAÇU, SP

open access: yesRevista do Instituto Florestal, 2003
trabalho visa ao conhecimento do padrão espacial de Genipa americana L., em duas populações de mata ripária do rio Moji-Guaçu, SP, e faz parte de um estudo mais amplo sobre a biologia de reprodução que abordou a biologia floral, a fenologia, a dispersão
Cybele de Souza Machado Crestana
doaj   +1 more source

Fine-tuning the buzz: comparing visitation frequency and pollination effectiveness in plant-pollinator networks. [PDF]

open access: yesNew Phytol
Summary Ecological network approaches have advanced our understanding of how species interactions influence community and evolutionary dynamics. However, a key limitation is that most network analyses rely solely on visitation data, often overlooking functional aspects of interactions.
Valadão-Mendes LB   +4 more
europepmc   +2 more sources

Guanacos’ and domestic livestock’s summer diets comparison in ecotone of “Tierra del Fuego” (Argentina) [PDF]

open access: yes, 2018
At present, it is believed that the population of guanacos has increased in the “Isla Grande de Tierra del Fuego”, arising a conflict with livestock and forestry activities.
Alvarenga, Eugenia Celeste   +6 more
core   +1 more source

Biología floral del género Cassia en la región de Los Tuxtlas, Veracruz

open access: yesBotan‪ical Sciences, 1977
El presente trabajo contribuye al conocimiento de la polinización y biología floral en el género Cassia. El estudio se realizó, fundamentalmente, en la región de Los Tuxtlas, Veracruz, y las especies donde se efectuaron las observaciones fueron las ...
Alfonso O. Delgado-Salinas   +1 more
doaj   +1 more source

Cumulative individual seed production in the polycarpic Caesalpinia gilliesii (Fabaceae): effects of temporal variability in floral display, plant density and pollination [PDF]

open access: yes, 2016
In polycarpic species, floral display size and density of conspecific neighbours are time variable as well as their effects on pollination and fecundity.
Ashworth, Lorena   +2 more
core  

Distribution of Oikopleura Dioica (Tunicata, Appendicularia) associated with a coastal frontal system (39°- 41°s) of the SW Atlantic ocean in the spawning area of Engraulis Anchoita anchovy [PDF]

open access: yes, 2013
Among tunicates, the small planktonic appendicularians generally comprise a significant fraction of the mesozooplankton in frontal systems. The summer 2011 distribution (vertical and spatial) of Oikopleura dioica was studied in terms of abundance ...
Capitanio, Fabiana Lia   +3 more
core   +4 more sources

Animal‐mediated seed dispersal: A review of study methods

open access: yesApplications in Plant Sciences, EarlyView.
Abstract By dispersing seeds, animals provide ecological functions critical for the ecology, evolution, and conservation of plants. We review quantitative and empirical approaches and emerging technologies to quantify processes and patterns of animal‐mediated seed dispersal (zoochory) across its phases: from predispersal to postdispersal.
Noelle G. Beckman   +10 more
wiley   +1 more source

A global review of pollination syndromes: a response to ollerton et al. 2015 [PDF]

open access: yes, 2015
In a recent literature review, we demonstrated that the evolution of floral traits is driven by adaptation to the most effective pollinators. In a critique of this study, Ollerton et al.
Aguilar, Ramiro   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy