scholarly journals Long‐distance pollen and seed dispersal and inbreeding depression in Hymenaea stigonocarpa (Fabaceae: Caesalpinioideae) in the Brazilian savannah

2018 ◽  
Vol 8 (16) ◽  
pp. 7800-7816 ◽  
Author(s):  
Marcela A. Moraes ◽  
Thaisa Y. K. Kubota ◽  
Bruno C. Rossini ◽  
Celso L. Marino ◽  
Miguel L. M. Freitas ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Inbreeding Depression ◽  
Long Distance ◽  
Brazilian Savannah ◽  
Pollen And Seed Dispersal

Pollinators and pollen dispersal of Piper dilatatum (Piperaceae) on Barro Colorado Island, Panama

2007 ◽  
Vol 23 (5) ◽  
pp. 603-606 ◽  
Author(s):  
David W. Kikuchi ◽  
Eloisa Lasso ◽  
James W. Dalling ◽  
Nadav Nur
Keyword(s):  
Genetic Structure ◽  
Seed Dispersal ◽  
Inbreeding Depression ◽  
Spatial Genetic Structure ◽  
Critical Role ◽  
Pollen Dispersal ◽  
Barro Colorado Island ◽  
Long Distance ◽  
Self Fertilization ◽  
Pollen And Seed Dispersal

The genus Piper is an important component of tropical forests worldwide. Many Piper species have been reported as self-compatible (Figueiredo & Sazima 2000), and many have the ability to reproduce asexually, forming clonal aggregations (Grieg 1993). Furthermore, the main dispersers of Piper (bats) transport whole infructescences to feeding roosts (Fleming & Heithaus 1981), tending to disperse closely related seeds in clumps. These characteristics of Piper biology are likely to result in populations with strongly marked spatial genetic structure, and raise the potential for inbreeding depression through self-fertilization. A few studies using allozymes to evaluate spatial genetic structure in Piper spp. support this view. These studies indicate that populations separated by more than 1 km are genetically distinct (high FST values; Wright 1943) and that for some species inbreeding could be substantial (high values of FIS and FIT; Heywood & Fleming 1986, Mariot et al. 2002). However, the contributions of limited pollen and seed dispersal to generating spatial genetic structure remain unknown. Estimates of seed dispersal probabilities by Carollia perspicillata (Phyllostomidae) bats on Barro Colorado Island (BCI), Panama, and at Santa Rosa, Costa Rica, indicate that Piper dispersers move most seeds 50–300 m from the parent plant, with occasional long-distance events of > 1 km (Fleming 1981, Thies 1998). However, no studies have assessed how far Piper flower visitors move pollen. If seed dispersal is limited, and clonal reproduction is common, then long-distance pollen transfer may play a critical role in preventing inbreeding depression in Piper populations.

Parent-parent and parent-offspring distances inSpondias radlkoferiseeds suggest long-distance pollen and seed dispersal: evidence from latrines of the spider monkey

2017 ◽  
Vol 33 (2) ◽  
pp. 95-106 ◽  
Author(s):  
Víctor Arroyo-Rodríguez ◽  
Esther Aguilar-Barajas ◽  
Arturo González-Zamora ◽  
Víctor Rocha-Ramírez ◽  
Antonio González-Rodríguez ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Spider Monkey ◽  
Parental Origin ◽  
Forest Fragments ◽  
Forest Types ◽  
Long Distance ◽  
Ecological Processes ◽  
Adult Trees ◽  
Pollen And Seed Dispersal ◽  
Dispersal Distances

Abstract:Pollen and seed dispersal are key ecological processes, directly impacting the spatial distribution, abundance and genetic structure of plant populations; yet, pollen- and seed-dispersal distances are poorly known. We used molecular markers to identify the parental origin (n = 152 adult trees) of 177Spondias radlkoferi(Anacardiaceae) seeds deposited by the spider monkey (Ateles geoffroyi) in latrines located beneath 17 sleeping-trees in two continuous forest sites (CF) and two forest fragments (FF) in the Lacandona rain forest, Mexico. We estimated mean parent-offspring (PO) distances per latrine and, for those seeds (54% of seeds) with more than one candidate parent (i.e. the potential maternal and parental parents), we also estimated parent-parent (PP) distances per latrine, and tested if PO and PP distances differed between forest types. Global PO and PP distances per latrine averaged 682 m (range = 83–1741 m) and 610 m (range = 74–2339 m), respectively, and did not differ significantly between CF and FF. This suggests that pollen dispersal is extensive in both forest types and that long seed dispersal distances (>100 m) are common, thus supporting the hypothesis that the spider monkey is an effective seed disperser ofS. radlkoferiin continuous and fragmented forests.

Mechanistic Analytical Models for Long-Distance Seed Dispersal by Wind

2005 ◽  
Vol 166 (3) ◽  
pp. 368 ◽  
Author(s):  
Katul ◽  
Porporato ◽  
Nathan ◽  
Siqueira ◽  
Soons ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Analytical Models ◽  
Long Distance

scholarly journals SELECTIVE INTERACTIONS BETWEEN SHORT-DISTANCE POLLEN AND SEED DISPERSAL IN SELF-COMPATIBLE SPECIES

Evolution ◽  
2006 ◽  
Vol 60 (11) ◽  
pp. 2257-2271 ◽  
Author(s):  
Virginie Ravigné ◽  
Isabelle Olivieri ◽  
Santiago González Martinez ◽  
François Rousset
Keyword(s):  
Seed Dispersal ◽  
Short Distance ◽  
Pollen And Seed Dispersal ◽  
Selective Interactions

scholarly journals Animal movement drives variation in seed dispersal distance in a plant–animal network

2019 ◽  
Vol 286 (1894) ◽  
pp. 20182007 ◽  
Author(s):  
E. Rehm ◽  
E. Fricke ◽  
J. Bender ◽  
J. Savidge ◽  
H. Rogers
Keyword(s):  
Seed Dispersal ◽  
Animal Movement ◽  
Bird Species ◽  
Dispersal Distance ◽  
Dispersal Patterns ◽  
Long Distance ◽  
Gut Passage ◽  
Dispersal Distances ◽  
Seed Dispersal Distance ◽  
Passage Times

Frugivores play differing roles in shaping dispersal patterns yet seed dispersal distance is rarely quantified across entire communities. We model seed dispersal distance using gut passage times and bird movement for the majority (39 interactions) of known bird–tree interactions on the island of Saipan to highlight differences in seed dispersal distances provided by the five avian frugivores. One bird species was found to be a seed predator rather than a disperser. The remaining four avian species dispersed seeds but differences in seed dispersal distance were largely driven by interspecific variation in bird movement rather than intraspecific variation in gut passage times. The median dispersal distance was at least 56 m for all species-specific combinations, indicating all species play a role in reducing high seed mortality under the parent tree. However, one species—the Micronesian Starling—performed 94% of dispersal events greater than 500 m, suggesting this species could be a key driver of long-distance dispersal services (e.g. linking populations, colonizing new areas). Assessing variation in dispersal patterns across this network highlights key sources of variation in seed dispersal distances and suggests which empirical approaches are sufficient for modelling how seed dispersal mutualisms affect populations and communities.

Long-Distance Seed Dispersal

2018 ◽  
pp. 204-237 ◽  
Author(s):  
Frank M. Schurr ◽  
Orr Spiegel ◽  
Ofer Steinitz ◽  
Ana Trakhtenbrot ◽  
Asaf Tsoar ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Long Distance

Design and development of a sampling platform to study long distance seed dispersal

2014 ◽  
Author(s):  
Jonathan Ogle ◽  
John Naglak ◽  
Isaac Blue-Eyes ◽  
Collin Miller ◽  
Aleph Baumbach ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Design And Development ◽  
Long Distance

Long-distance wind dispersal of tree seeds

1995 ◽  
Vol 73 (7) ◽  
pp. 1036-1045 ◽  
Author(s):  
D. F. Greene ◽  
E. A. Johnson
Keyword(s):  
Seed Dispersal ◽  
Conservation Biology ◽  
Plant Conservation ◽  
Dispersal Distance ◽  
Wind Dispersal ◽  
Source Strength ◽  
Long Distance ◽  
Model Predictions ◽  
Tree Seeds ◽  
The Relationship

Long-distance seed dispersal figures prominently in most plant conservation biology arguments, yet we possess little more than anecdotes concerning the relationship among deposition (seeds/m2), source strength (seeds/m2), and distance. In this paper we derive two simple models for long-distance deposition. The models are tested at the scale of 100–1600 m from the source and found to be within 5-fold of the observed deposition. There is no discernable decline in deposition for the range 300–1600 m. While we hesitate to extend model predictions to greater distances, both the models and the empirical results allow us to assert that rare wind-dispersed species in woodlots (dispersal distance around 1 km) are effectively isolated from one another at the temporal scale of 1000 years. Key words: plant conservation biology, wind dispersal of seeds, metapopulations.

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