Zonation of benthic communities on the subtropical Aliwal Shoal, Durban, KwaZulu-Natal, South Africa

Olbers, Jennifer; Celliers, Louis; Schleyer, Michael H.

doi:10.1080/15627020.2009.11407435

Cited by 9 publications

(6 citation statements)

References 2 publications

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“…). Coral species richness generally declines with increasing latitude (Harriott & Banks, ), and at high latitudes, the benthos is more frequently dominated by macroalgae, soft corals and other sessile invertebrates such as ascidians, sponges and barnacles (Harriott et al ., ; Schleyer et al ., ; Olbers et al ., ; Wicks et al ., ). Similarly, the diversity and abundance of fish communities decline with increasing latitude (Booth et al ., ).…”

Section: The Ecology Of Subtropical Reefsmentioning

confidence: 99%

“…Species richness and composition vary along latitudinal gradients (Floeter et al ., ; Smith et al ., ; Olbers et al ., ) but trends can differ for different taxa. While coral cover on high‐latitude reef patches is frequently similar to that of tropical coral reefs (Harrison et al ., ; Harriott & Banks, ; Wallace et al ., ; Thomson & Frisch, ), reef accretion and development are often limited due to cumulative stress from a combination of physical and biological factors (Kleypas et al ., ; Harriott & Banks, ).…”

Section: The Ecology Of Subtropical Reefsmentioning

confidence: 99%

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Conserving potential coral reef refuges at high latitudes

Beger

Sommer

Harrison

et al. 2013

Diversity and Distributions

156

149

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Aim High-latitude coral reef communities composed of tropical, subtropical and temperate species are heralded as climate change refuges for vulnerable tropical coral reef species, giving them high, but as yet unrealized, conservation priority. We review the ecology of subtropical reefs in the context of climate change and evaluate management strategies ensuring both their own continuity and their potential to act as refuges for tropical species.Location Global high-latitude coral reef environments.Methods We review the literature about refuges management, high-latitude reefs, climate change effects on reef organisms and the conservation of reefs.Results High-latitude coral reef systems are functionally different from their tropical counterparts, characterized by unique biogeographical overlap of taxa at their range margins, endemic species and strong seasonality in species composition. They are shaped by marginal environmental conditions, which are predicted to undergo greater changes than reefs at lower latitudes, resulting in community re-assembly through range shifts, altered dispersal patterns, survivorship and habitat loss. The combined impact of these changes, however, is difficult to assess, as some effects may be antagonistic. Climate change conservation options include passive management strategies such as no-take reserves that aim to minimize local disturbances, and active strategies such as relocating populations to refuge sites. Success of active intervention relies on the long-term persistence of relocated populations, which is unlikely for highlatitude populations once source tropical populations at lower latitudes are locally extinct.Main conclusion High-latitude reefs are poised for rapid modification under climate change. Management should anticipate these changes by setting up no-take reserves on suitable subtropical reefs now to foster ecosystem resilience through reduced anthropogenic impacts. Given the uncertainty over which species will arrive or depart and lack of knowledge about the history of most subtropical reef development, active management is presently not the best use of management resources.

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Section: The Ecology Of Subtropical Reefsmentioning

confidence: 99%

Section: The Ecology Of Subtropical Reefsmentioning

confidence: 99%

Conserving potential coral reef refuges at high latitudes

Beger

Sommer

Harrison

et al. 2013

Diversity and Distributions

156

149

View full text Add to dashboard Cite

show abstract

“…For the multivariate analysis on the accumulated data sets of communities, the classification (Cluster Analysis) with the Euclidean distance similarity matrix method and ordination by non-metric Multi Dimensional Scaling (NMDS) were used to analyze community structure and species distribution based on accumulated abundance data with 4th root transformation (Heip et al 1988, Olbers et al 2009, Gogina et al 2010. Clustering was carried out by a hierarchical, agglomerative method using average linkage; the results are displayed in dendrograms.…”

Section: Resultsmentioning

confidence: 99%

Tempo-spatial variation of macrobenthic communities on a tidal flat of Wenzhou Bay, China

Bao

Cheng

2011

Rev. biol. mar. oceanogr.

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classes and 7 phyla, most of which were arthropods and molluscs. Species richness, density and biodiversity significantly differed between tidal zones, seasons and the interaction between them. The tempo-spatial variations of the macrobenthic communities were also shown in cluster and ordination analysis. The middle tidal zone during autumn tends to have the highest values of the community descriptors. Thus, tidal zone and seasons have significant roles in structuring these communities.

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“…Since then, numerous studies have described the biodiversity or biodiversity features that are currently protected by various MPAs (e.g. Bennett and Attwood 1993;Attwood et al 1997;Hanekom et al 1997;Götz 2005;Sink et al 2005;Mann et al 2006;Celliers et al 2007;Götz et al 2009aGötz et al , 2009bOlbers et al 2009;Hanekom 2011;Currie et al 2012;Floros et al 2012;Solano-Fernandes et al 2012;Venter and Mann 2012;De Vos et al 2014, 2015Roberson et al 2015;Attwood et al 2016;Heyns et al 2016;Tucker et al 2017;Joshua et al 2018;Osgood et al 2019;Purdon et al 2020). Some studies, especially of 'iconic' marine species that are listed as Threatened or Protected in South Africa (RSA 2017), further describe how species utilise the MPAs (e.g.…”

Section: Areas Of Biodiversity Importancementioning

confidence: 99%

Evaluating the evidence for ecological effectiveness of South Africa’s marine protected areas

Kirkman

Mann

Sink

et al. 2021

African Journal of Marine Science

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The biodiversity and ecological integrity of many marine ecosystems are being threatened (Worm et al. 2006;O'Hara et al. 2019). For this reason, many marine habitats, species and ecosystem functions have been granted protection from human pressures in marine protected areas (MPAs), a tool that is increasingly favoured as a response to declines in marine biodiversity (Beaugrand et al. 2015;McCauley et al. 2015). The Convention on Biological Diversity's (CBD's) definition of a marine and coastal protected area is "any confined area within or adjacent to the marine environment, together with its overlying waters and associated flora, fauna, and historical and cultural features, which has been reserved by legislation or other effective means, including custom, with the effect that its marine and/or coastal biodiversity enjoys a higher level of protection than its surroundings" (CBD 2004, p 2). Many

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Zonation of benthic communities on the subtropical Aliwal Shoal, Durban, KwaZulu-Natal, South Africa

Cited by 9 publications

References 2 publications

Conserving potential coral reef refuges at high latitudes

Conserving potential coral reef refuges at high latitudes

Tempo-spatial variation of macrobenthic communities on a tidal flat of Wenzhou Bay, China

Evaluating the evidence for ecological effectiveness of South Africa’s marine protected areas

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