Pollen Interference Between Rare and Common Species

ABSTRACT The mechanisms underlying plant species distribution and abundance have been long studied in ecology. However, the role of heterospecific pollen interference in shaping these patterns needs more attention. Species distribution and abundance are important factors determining whether a specie...

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Main Authors: Eva M. Malecore, Markus Fischer
Format: Article
Language:English
Published: Wiley 2024-11-01
Series:Ecology and Evolution
Subjects:
Online Access:https://doi.org/10.1002/ece3.70505
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author Eva M. Malecore
Markus Fischer
author_facet Eva M. Malecore
Markus Fischer
author_sort Eva M. Malecore
collection DOAJ
description ABSTRACT The mechanisms underlying plant species distribution and abundance have been long studied in ecology. However, the role of heterospecific pollen interference in shaping these patterns needs more attention. Species distribution and abundance are important factors determining whether a species is endangered or not; thus, understanding the impact of heterospecific pollen interference on rare species could help to inform conservation strategies aimed at preserving plant communities. In this study, we conducted a multispecies experiment using eight co‐occurring and co‐flowering plant species with varying rarity levels in Switzerland. We performed cross‐pollinations by hand between nearly all species pairs and measured seed set (whether a flower produces seed) and seed number (number of seeds per flower) as outcomes. We looked at the effects of rarity status, self‐compatibility, and recipient‐donor relatedness on heterospecific pollen interference. Contrary to expectations, neither seed set nor seed number were affected by heterospecific pollen deposition. Self‐compatible species had a higher seed set probability, but this was independent from species rarity. In our study setting, heterospecific pollen interference seems to have only minor effects on seed set and seed number, and consequently on recruitment. Thus, heterospecific pollen interference seems to play only a minor role in shaping plant species distribution and abundance. Nevertheless, the higher impact of heterospecific pollen deposition on rare and closely related species, as well as the importance of conspecific pollen loss, might need further investigation for both in situ and ex‐situ conservation strategies.
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spelling doaj-art-7122f6e5d43a4d8e9a135209fd20c6422025-08-20T02:52:38ZengWileyEcology and Evolution2045-77582024-11-011411n/an/a10.1002/ece3.70505Pollen Interference Between Rare and Common SpeciesEva M. Malecore0Markus Fischer1Botanical Garden of the University of Bern Bern SwitzerlandBotanical Garden of the University of Bern Bern SwitzerlandABSTRACT The mechanisms underlying plant species distribution and abundance have been long studied in ecology. However, the role of heterospecific pollen interference in shaping these patterns needs more attention. Species distribution and abundance are important factors determining whether a species is endangered or not; thus, understanding the impact of heterospecific pollen interference on rare species could help to inform conservation strategies aimed at preserving plant communities. In this study, we conducted a multispecies experiment using eight co‐occurring and co‐flowering plant species with varying rarity levels in Switzerland. We performed cross‐pollinations by hand between nearly all species pairs and measured seed set (whether a flower produces seed) and seed number (number of seeds per flower) as outcomes. We looked at the effects of rarity status, self‐compatibility, and recipient‐donor relatedness on heterospecific pollen interference. Contrary to expectations, neither seed set nor seed number were affected by heterospecific pollen deposition. Self‐compatible species had a higher seed set probability, but this was independent from species rarity. In our study setting, heterospecific pollen interference seems to have only minor effects on seed set and seed number, and consequently on recruitment. Thus, heterospecific pollen interference seems to play only a minor role in shaping plant species distribution and abundance. Nevertheless, the higher impact of heterospecific pollen deposition on rare and closely related species, as well as the importance of conspecific pollen loss, might need further investigation for both in situ and ex‐situ conservation strategies.https://doi.org/10.1002/ece3.70505caucalidioncommon speciesphylogenetic distancepollen recipientself‐incompatible species
spellingShingle Eva M. Malecore
Markus Fischer
Pollen Interference Between Rare and Common Species
Ecology and Evolution
caucalidion
common species
phylogenetic distance
pollen recipient
self‐incompatible species
title Pollen Interference Between Rare and Common Species
title_full Pollen Interference Between Rare and Common Species
title_fullStr Pollen Interference Between Rare and Common Species
title_full_unstemmed Pollen Interference Between Rare and Common Species
title_short Pollen Interference Between Rare and Common Species
title_sort pollen interference between rare and common species
topic caucalidion
common species
phylogenetic distance
pollen recipient
self‐incompatible species
url https://doi.org/10.1002/ece3.70505
work_keys_str_mv AT evammalecore polleninterferencebetweenrareandcommonspecies
AT markusfischer polleninterferencebetweenrareandcommonspecies