The relationship of propagule pressure to invasion potential in plants

The invasive potential of a species can be assessed by propagule pressure, which measures the chances for propagules of a species to find a suitable habitat for establishment and reproduction. Seeds, fruits, and vegetative structures that contribute to the propagule pressure are morphologically, phy...

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Detalles Bibliográficos
Autores principales:	Martínez-Ghersa, M.A., Ghersa, C.M.
Formato:	JOUR
Materias:	Invasive species Propagule pressure Seeds
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00142336_v148_n1-2_p87_MartinezGhersa
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00142336_v148_n1-2_p87_MartinezGhersa
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spelling	todo:paper_00142336_v148_n1-2_p87_MartinezGhersa2023-10-03T14:11:44Z The relationship of propagule pressure to invasion potential in plants Martínez-Ghersa, M.A. Ghersa, C.M. Invasive species Propagule pressure Seeds The invasive potential of a species can be assessed by propagule pressure, which measures the chances for propagules of a species to find a suitable habitat for establishment and reproduction. Seeds, fruits, and vegetative structures that contribute to the propagule pressure are morphologically, physiologically and genetically different from one another, thus each kind should have a specific way of contributing to a successful invasion. In this paper we review plant traits that contribute to the propagule pressure. Seed production provides an estimate of the potential multiplication rate of the weed. However, it is gap-sensing mechanisms of seeds based on dormancy termination and germination requirements, which significantly contribute to the naturalization and invasion processes assuring a successful seedling establishment in environments of high competition. Dispersal of propagules reduces competition, mating with a sibling, and subsequent inbreeding depression, and increases colonization opportunities and range of expansion. Some of those benefits can be achieved in a population by existence of dormancy mechanisms and thus, the existence of a seed bank. Finally, vegetative propagation may ensure expansion of local populations when seedling establishment is low. Broadening the scope of traits that are considered in the breeding programs aimed at commercial production of plant propagules, to include those related to propagule pressure, is essential for adequate evaluation of invasive potential. © Springer 2006. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00142336_v148_n1-2_p87_MartinezGhersa
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Invasive species Propagule pressure Seeds
spellingShingle	Invasive species Propagule pressure Seeds Martínez-Ghersa, M.A. Ghersa, C.M. The relationship of propagule pressure to invasion potential in plants
topic_facet	Invasive species Propagule pressure Seeds
description	The invasive potential of a species can be assessed by propagule pressure, which measures the chances for propagules of a species to find a suitable habitat for establishment and reproduction. Seeds, fruits, and vegetative structures that contribute to the propagule pressure are morphologically, physiologically and genetically different from one another, thus each kind should have a specific way of contributing to a successful invasion. In this paper we review plant traits that contribute to the propagule pressure. Seed production provides an estimate of the potential multiplication rate of the weed. However, it is gap-sensing mechanisms of seeds based on dormancy termination and germination requirements, which significantly contribute to the naturalization and invasion processes assuring a successful seedling establishment in environments of high competition. Dispersal of propagules reduces competition, mating with a sibling, and subsequent inbreeding depression, and increases colonization opportunities and range of expansion. Some of those benefits can be achieved in a population by existence of dormancy mechanisms and thus, the existence of a seed bank. Finally, vegetative propagation may ensure expansion of local populations when seedling establishment is low. Broadening the scope of traits that are considered in the breeding programs aimed at commercial production of plant propagules, to include those related to propagule pressure, is essential for adequate evaluation of invasive potential. © Springer 2006.
format	JOUR
author	Martínez-Ghersa, M.A. Ghersa, C.M.
author_facet	Martínez-Ghersa, M.A. Ghersa, C.M.
author_sort	Martínez-Ghersa, M.A.
title	The relationship of propagule pressure to invasion potential in plants
title_short	The relationship of propagule pressure to invasion potential in plants
title_full	The relationship of propagule pressure to invasion potential in plants
title_fullStr	The relationship of propagule pressure to invasion potential in plants
title_full_unstemmed	The relationship of propagule pressure to invasion potential in plants
title_sort	relationship of propagule pressure to invasion potential in plants
url	http://hdl.handle.net/20.500.12110/paper_00142336_v148_n1-2_p87_MartinezGhersa
work_keys_str_mv	AT martinezghersama therelationshipofpropagulepressuretoinvasionpotentialinplants AT ghersacm therelationshipofpropagulepressuretoinvasionpotentialinplants AT martinezghersama relationshipofpropagulepressuretoinvasionpotentialinplants AT ghersacm relationshipofpropagulepressuretoinvasionpotentialinplants
_version_	1807316471723851776

The relationship of propagule pressure to invasion potential in plants

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