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Authors Pino, J; de Roa, E
Author Full Name Pino, Joan; de Roa, Enric
Title Population biology of Kosteletzkya pentacarpos (Malvaceae) in the Llobregat delta (Catalonia, NE of Spain)
Source PLANT ECOLOGY
Language English
Document Type Article
Author Keywords facilitation; Kosteletzkya pentacarpos; Llobregat delta; long-lived plants; population biology; rare wetland plants
Keywords Plus AGE-SPECIFIC DEMOGRAPHY; WETLAND PLANT; SALT-MARSH; POSITIVE INTERACTIONS; EXPERIMENTAL FIELD; SEED BANK; TREES; COMMUNITIES; MANAGEMENT; VIABILITY
Abstract Field experiments and wild population monitoring have been performed to study the population biology of the rare long-lived Kosteletzkya pentacarpos (Malvaceae) in the Llobregat delta (Catalonia, NE Spain). Field experiments explored the fate of seeds in soil at different depths, seedling emergence, and seedling survival, growth and flowering with and without canopy cover during the first 2 years of life. They also were used to ascertain the size-related pattern of seedling survivorship and flowering. Field data concerning mortality, growth and fecundity of adult plants were collected yearly in three wild populations for 7-9 years. In old adults (reproducing long before the beginning of the study), ANOVAR tests were performed to compare maximum diameter, total and fertile shoots, and viable seeds per plant between years and populations. New adults (starting flowering the first year of study or in subsequent years) were used to explore, using linear and polynomial regressions, the association of RGR and both total and fertile shoot production with (i) plant size (maximum basal diameter or its logarithm); (ii) plant age (years in adult stage); and (iii) plant age after removing the effect of size and year-to-year fluctuations. In this case, we examined the age-related pattern of the residuals obtained from the regressions with size and year. The study identified the following main demographic features of K. pentacarpos: (i) transient, shallow soil seed bank; (ii) shade tolerance of seedling emergence; (iii) canopy-facilitation of seedling survival and bolting during the first two years of life; (iv) size-related pattern for seedling survivorship but not flowering; (v) exclusive dependence on a fluctuating seed output for reproduction; (vi) rapid adult growth; and (vii) high adult longevity but (viii) rapid depletion of fecundity with age. Seed output was highly constrained by mining insects. The changing size-structure and the decreasing reproductive success of old adults in several populations suggest that K. pentacarpos might undergo a dynamics of population establishment and extinction in the Ricarda marshes. Because of fluctuating reproduction and the lack of a persistent seed bank, the conservation of standing adult populations appears to be a key factor to ensure the persistence of the species.
Author Address Univ Autonoma Barcelona, CREAF, E-08193 Barcelona, Spain; Univ Barcelona, Dept Plant Biol, E-08028 Barcelona, Spain; Area Urbanisme & Medi Ambient, Ajuntament Prat Llobregat, E-08820 El Prat de Llobregat, Spain
Reprint Address Pino, J (reprint author), Univ Autonoma Barcelona, CREAF, E-08193 Barcelona, Spain.
E-mail Address joan.pino@uab.es
ResearcherID Number Pino, Joan/H-6253-2015
ORCID Number Pino, Joan/0000-0003-0939-7502
Times Cited 11
Total Times Cited Count (WoS, BCI, and CSCD) 11
Publisher SPRINGER
Publisher City DORDRECHT
Publisher Address VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN 1385-0237
29-Character Source Abbreviation PLANT ECOL
ISO Source Abbreviation Plant Ecol.
Publication Date JAN
Year Published 2007
Volume 188
Issue 1
Beginning Page 1
Ending Page 16
Digital Object Identifier (DOI) 10.1007/s11258-006-9143-2
Page Count 16
Web of Science Category Plant Sciences; Ecology; Forestry
Subject Category Plant Sciences; Environmental Sciences & Ecology; Forestry
Document Delivery Number 116VI
Unique Article Identifier WOS:000242831200001
Plants associated with this reference

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