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Authors Dangremond, EM
Author Full Name Dangremond, Emily M.
Title Propagule predation by crabs limits establishment of an endemic mangrove
Source HYDROBIOLOGIA
Language English
Document Type Article
Author Keywords Seed predation; Refugia; Mangrove; Recruitment; Crab; Pelliciera rhizophorae
Keywords Plus PLANT-POPULATION DYNAMICS; SEED PREDATION; LAND CRABS; INTERTIDAL DISTRIBUTION; RAIN-FOREST; RECRUITMENT; HYPOTHESIS; DOMINANCE; ECOLOGY; DISTRIBUTIONS
Abstract Recruitment of seedlings is crucial to the establishment and maintenance of plant populations and species ranges. Seed predation by crabs is prevalent in mangroves globally, but the importance of predation on mangrove abundance and distribution relative to other factors remain unclear. The rare Neotropical mangrove Pelliciera rhizophorae occurs in freshwater-influenced sites, and may lose many of its propagules to crab predation in other locations. Propagules of P. rhizophorae were placed in either Rhizophora mangle or P. rhizophorae-dominated forests on the Caribbean and Pacific coasts of Panama. On the Caribbean coast, crabs consumed 86.7% of propagules in the R. mangle forest but only 3.3% of propagules in the P. rhizophorae zone. On the Pacific coast, crabs consumed 90% of propagules in the R. mangle zone and 66.7% in the P. rhizophorae zone. When crab exclosures were used, seedling survival did not vary between forest types, suggesting that predation, rather than seedling survival once established, limits P. rhizophorae populations. Rhizophora mangle produces an order of magnitude more propagules per capita than P. rhizophorae and may well satiate its crab predators. The low salinity forest stands may provide a refuge from crab predation for the rare mangrove P. rhizophorae.
Author Address [Dangremond, Emily M.] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA
Reprint Address Dangremond, EM (corresponding author), Smithsonian Environm Res Ctr, 647 Contees Wharf Rd, Edgewater, MD 21307 USA.
E-mail Address dangremonde@si.edu
ORCID Number Dangremond, Emily/0000-0001-6177-9079
Funding Agency and Grant Number National Science FoundationNational Science Foundation (NSF)
Funding Text Wayne Sousa, Paul Fine, Perry de Valpine, and Ilka Feller and an anonymous reviewer provided helpful comments on early versions of this paper. Sierra Flynn and Jorge Morales helped complete fieldwork. Funding was provided by the National Science Foundation Graduate Research Fellowship Program. Thanks to the Smithsonian Tropical Research Institute for use of their facilities at Punta Galeta and Bocas del Toro.
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher SPRINGER
Publisher City DORDRECHT
Publisher Address VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN 0018-8158
29-Character Source Abbreviation HYDROBIOLOGIA
ISO Source Abbreviation Hydrobiologia
Publication Date AUG
Year Published 2015
Volume 755
Issue 1
Beginning Page 257
Ending Page 266
Digital Object Identifier (DOI) 10.1007/s10750-015-2238-9
Page Count 10
Web of Science Category Marine & Freshwater Biology
Subject Category Marine & Freshwater Biology
Document Delivery Number CK2KM
Unique Article Identifier WOS:000356039300018
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