Results 11 to 20 of about 818 (183)

Incorporating cache management behavior into seed dispersal: the effect of pericarp removal on acorn germination. [PDF]

PLoS ONE, 2014
Selecting seeds for long-term storage is a key factor for food hoarding animals. Siberian chipmunks (Tamias sibiricus) remove the pericarp and scatter hoard sound acorns of Quercus mongolica over those that are insect-infested to maximize returns from ...
Xianfeng Yi, Mingming Zhang, Andrew W Bartlow, Zhong Dong   +3 more
doaj   +5 more sources

Massive and effective acorn dispersal into agroforestry systems by an overlooked vector, the Eurasian magpie (Pica pica) [PDF]

Ecosphere, 2019
Oak regeneration and the expansion of forested sites in Eurasia rely on acorn dispersal by animals, especially the Eurasian jay (Garrulus glandarius). However, in open agroforestry systems where jays are absent, such as old fields far from acorn sources,
Loreto Martínez‐Baroja, Lorenzo Pérez‐Camacho, Pedro Villar‐Salvador, Salvador Rebollo, Pablo Quiles, Daniel Gómez‐Sánchez, Mercedes Molina‐Morales, Alexandro B. Leverkus, Jorge Castro, José María Rey‐Benayas   +9 more
doaj   +4 more sources

Climatic determinants of acorn size and germination percentage of Quercus rugosa (Fagaceae) along a latitudinal gradient in Mexico

Botan‪ical Sciences, 2017
Background. Abiotic constraints, historical effects of the last glaciation, and differential dispersal, have been proposed as potential explanations to account for the latitudinal decrease in acorn size of wide-ranging oak species distributed in the U.S.
Jesús Llanderal-Mendoza, Paul F. Gugger, Ken Oyama, Dolores Uribe-Salas, Antonio González Rodríguez   +4 more
doaj   +2 more sources

Spatial patterns of acorn dispersal by rodents: do acorn crop size and ungulate presence matter?

Oikos, 2009
Seed dispersal is qualitatively effective when it increases recruitment probability. A poorly studied factor likely affecting recruitment is the spatial distribution of dispersed seeds. Seed‐caching animals are thought to disperse seeds in a way that reduces clumping and density to impede cache pilfering.
Carolina Puerta‐Piñero, José María Gómez, Eugene W. Schupp   +2 more
openaire   +2 more sources

Population Dynamics and Dispersal Coalitions in the Cooperatively Breeding Acorn Woodpecker

, 2021
Dispersal is a critical life-stage with consequences not only for the individual, but for population dynamics and thus the fate of the whole species. The creation of dispersal coalitions can lead to complex outcomes and affect how changes in abundance occur on the landscape.
Hagemeyer, Natasha
openaire   +4 more sources

Impact of large herbivore rewilding on acorn dispersal dynamics

Global Ecology and Conservation
Large herbivores drive ecosystem functions and processes through their direct or indirect impact on different habitats and wildlife communities. Some studies have assessed the impact of large herbivores on the small mammal diversity and abundance, but ...
Mariana Rossa, Pedro Leite, Paloma Linck, Gabriel Moreira, Nanäa Mausberg, Joana Fernandes, Pedro Severino, João Duarte, Paula Maia, Rita Tinoco Torres, João Carvalho, Ramón Perea   +11 more
doaj   +2 more sources

Acorn removal and dispersal by the dung beetle Thorectes lusitanicus : ecological implications [PDF]

Ecological Entomology, 2007
Abstract 1. Plant–animal interactions, and in particular the processes of seed predation and dispersal, are crucial for tree regeneration and forest dynamics. A novel and striking case of interaction between a dung beetle ( Thorectes lusitanicus ) and two
Pérez-Ramos, Ignacio Manuel, Marañón, Teodoro, Lobo, Jorge M., Verdú, José R.   +3 more
openaire   +3 more sources

Dispersal timing, palatability and caching of acorns of Aesculus turbinata Bl [PDF]

Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, 2011
Abstract Aesculus turbinata acorns were dispersed earlier than other acorn-producing species and are removed completely by rodents, although the acorns are unpalatable. The dispersal timing and low palatability to rodents on A. turbinata acorns promote the seed caching by rodents, facilitating the seedling emergence is possible even in lower-seeding ...
Irie, K., Tsuyuzaki, S.
openaire   +3 more sources

Active facilitation of helper dispersal by parents and siblings in the cooperatively breeding acorn woodpecker

Behavioral Ecology and Sociobiology
Abstract Offspring that delay dispersal in cooperatively breeding species have been hypothesized to gain direct fitness benefits via parental facilitation—being passively tolerated on their natal territory by their parents—thereby enjoying enhanced survival and increased probability of ...
Natasha D. G. Hagemeyer, Walter D. Koenig, Eric L. Walters   +2 more
openaire   +4 more sources

Natal Dispersal in the Cooperatively Breeding Acorn Woodpecker [PDF]

The Condor, 2000
Abstract Dispersal data are inevitably biased toward short-distance events, often highly so. We illustrate this problem using our long-term study of Acorn Woodpeckers (Melanerpes formicivorus) in central coastal California. Estimating the proportion of birds disappearing from the study area and correcting for detectability within the ...
Koenig, Walter D., Hooge, Philip N., Stanback, Mark T., Haydock, Joseph   +3 more
openaire   +1 more source