Preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the Maltese Islands

The vertical structure of the propagule bank of five angiosperms (Elatine gussonei, Damasonium bourgaei, Callitriche truncata, Ranunculus saniculaefolius, Zannichellia palustris) and one charophyte (Chara vulgaris) was studied in eight ephemeral autumnal rockpools from two localities in the Maltese...

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Main Authors: Lanfranco, Sandro, Callus, James, Cilia, Stephen, Zammit, Howard J.
Format: Article in Journal/Newspaper
Language:English
Published: The Central Mediterranean Naturalist 2000
Subjects:
Plants > Malta
Angiosperms > Malta
Charophyta > Malta
Aquatic plants > Malta
Zannichellia palustris
Online Access:https://www.um.edu.mt/library/oar//handle/123456789/14957
id ftunivmalta:oai:www.um.edu.mt:123456789/14957
record_format openpolar
spelling ftunivmalta:oai:www.um.edu.mt:123456789/14957 2023-05-15T18:46:08+02:00 Preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the Maltese Islands Lanfranco, Sandro Callus, James Cilia, Stephen Zammit, Howard J. 2000-12 https://www.um.edu.mt/library/oar//handle/123456789/14957 en eng The Central Mediterranean Naturalist Lanfranco, S., Callus, J., Cilia, S., & Zammit, H. J. (2000). Preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the Maltese Islands. The Central Mediterranean Naturalist, 3(2), 69-78. https://www.um.edu.mt/library/oar//handle/123456789/14957 info:eu-repo/semantics/openAccess The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. Plants -- Malta Angiosperms -- Malta Charophyta -- Malta Aquatic plants -- Malta article 2000 ftunivmalta 2021-10-16T18:05:03Z The vertical structure of the propagule bank of five angiosperms (Elatine gussonei, Damasonium bourgaei, Callitriche truncata, Ranunculus saniculaefolius, Zannichellia palustris) and one charophyte (Chara vulgaris) was studied in eight ephemeral autumnal rockpools from two localities in the Maltese Islands. Distribution of seeds and oospores was distinctly non-uniform, with 94% of propagules being located in the top 4cm {)f sediment. Propagules that were recovered from depths exceeding 4cm are unlikely to have been buried in situ but are probably due to percolation from the surface during the dry season when cracks and fissures in desiccated sediment provide such a route. Operation of this process is indicated by over-representation of the smallest propagules in the deepest strata. The presence of large numbers ofpropagules in the surface layers is adaptive, facilitating reception of germination cues and attainment of the soil surface by young shoots. However this strategy also exposes propagules to predation as well as to high temperatures during the dry season. The data obtained in the present study suggest that quantification of contributions to and losses from the propagule bank should be the focus of subsequent work aimed at constructing a predictive model of the population dynamics of these species. peer-reviewed Article in Journal/Newspaper Zannichellia palustris University of Malta: OAR@UM
institution Open Polar
collection University of Malta: OAR@UM
op_collection_id ftunivmalta
language English
topic Plants -- Malta
Angiosperms -- Malta
Charophyta -- Malta
Aquatic plants -- Malta
spellingShingle Plants -- Malta
Angiosperms -- Malta
Charophyta -- Malta
Aquatic plants -- Malta
Lanfranco, Sandro
Callus, James
Cilia, Stephen
Zammit, Howard J.
Preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the Maltese Islands
topic_facet Plants -- Malta
Angiosperms -- Malta
Charophyta -- Malta
Aquatic plants -- Malta
description The vertical structure of the propagule bank of five angiosperms (Elatine gussonei, Damasonium bourgaei, Callitriche truncata, Ranunculus saniculaefolius, Zannichellia palustris) and one charophyte (Chara vulgaris) was studied in eight ephemeral autumnal rockpools from two localities in the Maltese Islands. Distribution of seeds and oospores was distinctly non-uniform, with 94% of propagules being located in the top 4cm {)f sediment. Propagules that were recovered from depths exceeding 4cm are unlikely to have been buried in situ but are probably due to percolation from the surface during the dry season when cracks and fissures in desiccated sediment provide such a route. Operation of this process is indicated by over-representation of the smallest propagules in the deepest strata. The presence of large numbers ofpropagules in the surface layers is adaptive, facilitating reception of germination cues and attainment of the soil surface by young shoots. However this strategy also exposes propagules to predation as well as to high temperatures during the dry season. The data obtained in the present study suggest that quantification of contributions to and losses from the propagule bank should be the focus of subsequent work aimed at constructing a predictive model of the population dynamics of these species. peer-reviewed
format Article in Journal/Newspaper
author Lanfranco, Sandro
Callus, James
Cilia, Stephen
Zammit, Howard J.
author_facet Lanfranco, Sandro
Callus, James
Cilia, Stephen
Zammit, Howard J.
author_sort Lanfranco, Sandro
title Preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the Maltese Islands
title_short Preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the Maltese Islands
title_full Preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the Maltese Islands
title_fullStr Preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the Maltese Islands
title_full_unstemmed Preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the Maltese Islands
title_sort preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the maltese islands
publisher The Central Mediterranean Naturalist
publishDate 2000
url https://www.um.edu.mt/library/oar//handle/123456789/14957
genre Zannichellia palustris
genre_facet Zannichellia palustris
op_relation Lanfranco, S., Callus, J., Cilia, S., & Zammit, H. J. (2000). Preliminary investigations into the vertical structure of propagule banks of temporary freshwater rockpools in the Maltese Islands. The Central Mediterranean Naturalist, 3(2), 69-78.
https://www.um.edu.mt/library/oar//handle/123456789/14957
op_rights info:eu-repo/semantics/openAccess
The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder.
_version_ 1766237586884395008

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