| Title | Effectiveness of Table Mountain National Park Marine Protected Area project (2017-2021) |
|---|---|
| Authors |
Ndiviwe Baliwe |
| Publisher | Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (2023) |
| Contributors |
Project Member: George Branch Contact Person: Ndiviwe Baliwe |
| Abstract | Intertidal rocky shores are the most accessible marine habitats and therefore heavily impacted by harvesting. In recent years, they have also been increasingly invaded by alien species, which compounds the effects of harvesting on rocky shore community composition and functioning. Recent survey data, combined with historical data from 1970, were used to assess temporal changes over the intervening period in rocky shore communities at two sites (Wireless Point and Wireless Island). |
| Methods | Data were collected on sloping platforms, four or five transects parallel to the shore, each with five replicates, were sampled during spring tides, covering four or five shore heights and employing 50 × 50-cm quadrats that were spaced at equidistant intervals up the shore to span the range between the mean low and mean high water marks, in exactly the same locations and shore heights as those surveyed in 1970. The quadrats were divided into 25 grid cells, each representing 4% cover, to facilitate accurate estimation of percentage cover. In each quadrat, all species of macro-invertebrates and algae (functionally grouped into corticated algae, encrusting and ephemeral algae) were identified. The percentage covers of sessile organisms were estimated and the numbers of mobile fauna counted. Counts were later converted to percentage cover to standardise the data). |
| Data | |
| Temporal extent | 27 Feb 2017 – 25 Apr 2017 |
| Geographic extent |
SOUTH ATLANTIC OCEAN
North: -34.122 |
| Keywords | density, no-take areas, rocky shores, SDG 14.2.1 Number of countries using ecosystem-based approaches to managing marine areas, shell length, SOUTH ATLANTIC OCEAN, Table Mountain National Park MPA |