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Scale-dependent benthic recolonization dynamics: life stage-based dispersal and demographic consequences
Whitlatch, R.B.; Lohrer, A.M.; Thrush, S.F.; Pridmore, R.D.; Hewitt, J.E.; Cummings, V.J.; Zajac, R.N. (1998). Scale-dependent benthic recolonization dynamics: life stage-based dispersal and demographic consequences. Hydrobiologia 375: 217-226. https://dx.doi.org/10.1023/A:1017084217011
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, meer
Is gerelateerd aan:Whitlatch, R.B.; Lohrer, A.M.; Thrush, S.F.; Pridmore, R.D.; Hewitt, J.E.; Cummings, V.J.; Zajac, R.N. (1998). Scale-dependent benthic recolonization dynamics: life stage-based dispersal and demographic consequences, in: Baden, S. et al. Recruitment, colonization, and physical-chemical forcing in marine biological systems: Proceedings of the 32nd European Marine Biology Symposium, held in Lysekil, Sweden, 16-22 August 1997. Developments in Hydrobiology, 132: pp. 217-226. https://dx.doi.org/10.1007/978-94-017-2864-5_18, meer
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| Trefwoorden |
Biological settlement > Larval settlement
Developmental stages
Life history
Population dynamics
Population functions > Recruitment
Boccardia syrtis (Rainer, 1973) [WoRMS]; Polydora cornuta Bosc, 1802 [WoRMS]
Marien/Kust |
| Auteurs | | Top |
- Whitlatch, R.B.
- Lohrer, A.M.
- Thrush, S.F.
- Pridmore, R.D.
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- Hewitt, J.E.
- Cummings, V.J.
- Zajac, R.N.
|
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| Abstract |
Soft-sediment recruitment dynamics are dependent upon two sources of colonists; larvae transported from the water column and post-settlement movement of juvenile and/or adult life-stages across the seabed. Differences in the relative dispersal ability of the different life-stages into disturbed patches of habitat should vary predictably with the spatial scale of the disturbance. Smaller patches with a greater edge:surface area ratio should be more influenced by the post-settlement colonist pool than larger patches possessing a smaller edge:surface area ratio. A life stage-based recolonization model, using a Polydora cornuta life table, has been developed to describe how differences in the immigration rates of larvae, juveniles and adults can influence within-patch recovery times. Model results indicate that immigration of adult stages into disturbed patches has the least influence on patch recovery time. In contrast, post-settlement juvenile stages generally has a pronounced effect on patch population dynamics. Experimental evidence of scale-dependent migration of different life-stages to disturbed patches is also presented for the spionid polychaete Boccardia syrtis. Future research on scale-dependent recolonization dynamics in soft-sediment habitats should focus on acquisition of within-patch demographic data in order to more fully understand the importance of post-settlement life-stage movement in regulating population and community dynamics. |
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