- Title
- Invasion of rocky shores by a mytilid mussel reveals an abundant‐centre distribution coupled with moderate increases in densities at its absolute range limits
- Creator
- Ma, Kevin C K, Pulfrich, Andrea, Froneman, P William, McQuaid, Christopher D
- Subject
- To be catalogued
- Date
- 2023
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/479253
- Identifier
- vital:78278
- Identifier
- https://doi.org/10.1111/aec.13260
- Description
- Semimytilus patagonicus is an invasive mussel on the coast of southern Africa and has extended its range in recent years. We asked whether its distribution and abundance are consistent with the abundant‐centre hypothesis (ACH). Marginal populations were located by monitoring 33 rocky shore sites in South Africa and southern Namibia in 2021. This revealed no changes to its distributional limits since 2020. At nine of these sites, population demography was measured to allow a comparison of their densities and size structure. Four were central populations on the west coast of South Africa (including the site where the species was first detected in 2009). Four were marginal populations in South Africa: two towards the cold range edge in the north and two towards the warm range edge to the south. The ninth population was in southern Namibia, representing a recent invasion event first detected in 2014. Across the species' South African range, the distribution of its abundance was generally consistent with the ACH, with the greatest abundance at its range centre and a gradual decrease towards the range edges.
- Format
- 17 pages, pdf
- Language
- English
- Relation
- Austral Ecology, Ma, K.C., Pulfrich, A., Froneman, P.W. and McQuaid, C.D., 2023. Invasion of rocky shores by a mytilid mussel reveals an abundant‐centre distribution coupled with moderate increases in densities at its absolute range limits. Austral Ecology, 48(1), pp.197-214, Austral Ecology volume 48 number 1 197 214 2023 1442-9993
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Wiley Library Online Terms of Use Statement (https://onlinelibrary.wiley.com/terms-and-conditions)
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Collections
McQuaid, Christopher D (Distinguished Professor)
Froneman, Pierre William (Prof)
RU DST/NRF SARChI for Marine Ecosystems and Resources
RU Department of Zoology and Entomology
SDG 14. Life Below Water
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