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unknown
Causes of decoupling between larval supply and settlement and consequences for understanding recruitment and population connectivity
Authors
Alexander
Alfaro
+231 more
Ambrose
André
Ayata
Ayers
Barnes
Barnes
Bayne
Beaulieu
Bennell
Berntsson
Bertness
Bertness
Bhaud
Bishop
Black
Blythe
Bullard
Bushek
Butman
Cassie
Cassie
Castilla
Claessen
Claessen
Clare
Connell
Coronado
Costantino
Cowen
Crimaldi
Crisp
Crisp
Crisp
Crisp
Crisp
Crisp
Cruz
David
Davis
Dayton
De Wolf
Denley
Dercole
Dobrestov
Doherty
Doherty
Doherty
Doherty
Dudas
Eckman
Eggleston
Farrell
Fernández
Field
Fox
Francesca Porri
Fuchs
Gaines
Gallager
Garland
Gilmour
Giménez
Glasby
Gosselin
Gouhier
Grosberg
Guizien
Hamilton
Hargrave
Hatton
Haury
Haury
Hawkins
Hills
Hjort
Holloway
Hunt
Hurlbut
Iribarne
Jacinto
Jarrett
Jeffery
Jeffery
Jeffery
Jenkins
Jesús Pineda
Johnson
Johnson
Jonathan Blythe
Jonsson
Kent
Kingsford
Knight-Jones
Knight-Jones
Knight-Jones
Koehl
Koehl
Korringa
Korringa
Lagos
Larman
Larsson
Lawton
Le Fèvre
Lehane
Leibold
Leichter
Leis
Levin
Lewin
Lewis
Lindquist
Lindsay
Loosanoff
Luppi
Ma
Mann
Marshall
McQuaid
Menge
Menge
Menge
Metaxas
Miller
Miller
Minchinton
Minchinton
Miron
Miron
Miron
Moksnes
Moksnes
Moksnes
Moksnes
Moreira
Morgan
Mullineaux
Natunewicz
Navarrete
Navarrete
Noda
Norén
Olivier
Olson
Olson
Osman
Osman
Osman
Otaíza
Palma
Palmer
Pawlik
Pernet
Persson
Pineda
Pineda
Pineda
Pineda
Pineda
Pineda
Pineda
Pineda
Polis
Polis
Porri
Porri
Porri
Porri
Poulin
Pyefinch
Qian
Queiroga
Raimondi
Raimondi
Real
Reidenbach
Reyns
Rilov
Rittschof
Rittschof
Roberts
Ross
Roughgarden
Roughgarden
Roughgarden
Ruiz
Sainte-Marie
Satuito
Satumanatpan
Scheltema
Seitz
Shanks
Shurin
Simberloff
Singarajah
Snelgrove
Snelgrove
Sponaugle
Stamps
Stevens
Stoner
Strathmann
Swanson
Tamburri
Tapia
Thomason
Thorson
Todd
Todd
Todd
Toonen
Tremblay
Underwood
Underwood
Underwood
Victoria Starczak
Walters
Wespestad
Wethey
Wethey
White
White
Whitlatch
Woodin
Woodson
Yan
Yoshioka
Young
Yule
Yund
Zega
Publication date
1 January 2010
Publisher
'Elsevier BV'
Doi
Cite
Abstract
Author Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Journal of Experimental Marine Biology and Ecology 392 (2010): 9-21, doi:10.1016/j.jembe.2010.04.008.Marine broadcast spawners have two-phase life cycles, with pelagic larvae and benthic adults. Larval supply and settlement link these two phases and are crucial for the persistence of marine populations. Mainly due to the complexity in sampling larval supply accurately, many researchers use settlement as a proxy for larval supply. Larval supply is a constraining variable for settlement because, without larval supply, there is no settlement. Larval supply and settlement may not be well correlated, however, and settlement may not consistently estimate larval supply. This paper explores the argument that larval supply (i.e., larval abundance near settlement sites) may not relate linearly to settlement. We review the relationship between larval supply and settlement, from estimates and biases in larval supply sampling, to non-behavioral and behavioral components, including small-scale hydrodynamics, competency, gregarious behavior, intensification of settlement, lunar periodicity, predation and cannibalism. Physical and structural processes coupled with behavior, such as small-scale hydrodynamics and intensification of settlement, sometimes result in under- or overestimation of larval supply, where it is predicted from a linear relationship with settlement. Although settlement is a function of larval supply, spatial and temporal processes interact with larval behavior to distort the relationship between larval supply and settlement, and when these distortions act consistently in time and space, they cause biased estimates of larval supply from settlement data. Most of the examples discussed here suggest that behavior is the main source of the decoupling between larval supply and settlement because larval behavior affects the vertical distribution of larvae, the response of larvae to hydrodynamics, intensification of settlement, gregariousness, predation and cannibalism. Thus, larval behavior seems to limit broad generalizations on the regulation of settlement by larval supply. Knowledge of the relationship is further hindered by the lack of a well founded theoretical relationship between the two variables. The larval supply- settlement transition may have strong general consequences for population connectivity, since larval supply is a result of larval transport, and settlement constrains recruitment. Thus, measuring larval supply and settlement effectively allows more accurate quantification and understanding of larval transport, recruitment and population connectivity.JP would like to thank WHOI Ocean Life Institute for partial funding. FP’s contribution is based upon research supported by the South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation
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