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Map of Saldanha Bay and Langebaan Lagoon, South Africa, showing the eight zones used in instantaneous boat counts, the four slipway access points (grey circles: Langebaan Yacht Club, Alabama slipway, Club Mykonos and Pepper Bay slipway), and the four beaches that were patrolled (black squares: Langebaan rocks, Mykonos beach, Dam and Saldanha) in the roving-creel survey from April 2006 to March 2008. The dashed line represents the 'no take' MPA boundary; black circles, together with the grey circles, indicate the 16 beach-seine sampling sites that were surveyed annually
Source publication
White stumpnose Rhabdosargus globiceps is the main target of the linefishery in Saldanha Bay. Increased fishing pressure over the last three decades, particularly by the recreational sector, has led to concerns regarding sustainability of the local white stumpnose stock. The fishery was exceptionally productive between 2006 and 2008, with an estima...
Contexts in source publication
Context 1
... Bay is a large (115 km 2 ) sheltered bay on the west coast of South Africa, and extends parallel to the coast into Langebaan Lagoon, which is protected by the West Coast National Park (Figure 1). The lagoon has a 34 km 2 'no take' MPA situated at the southern end. ...
Context 2
... dates and times of the counts were determined randomly at the beginning of the month, based on the following three conditions: (1) there was only one count (from each point) on any single day; (2) that the ratio of weekend to weekday counts was 1:3; and (3) that times were limited to daylight hours. Saldanha Bay was subdivided into eight zones, and each zone was entirely visible from at least one vantage point (Figure 1). The observer made a distinction between boats that were linefishing and gillnetting (targeting southern mullet Liza richardsonii). ...
Context 3
... launch from and return to four landing sites in Saldanha Bay, namely the Langebaan Yacht Club, Alabama slipway, Club Mykonos, and Pepper Bay slipway ( Figure 1). A survey clerk visited each of the four boat landing sites four times a month according to a random schedule with the same three sampling constraints described above. ...
Context 4
... creel surveys were undertaken four times per month at each of the four recreational shore fishing areas: Langebaan rocks, Mykonos beach, Dam and Saldanha (Figure 1). These areas covered the majority of shore angling spots in Saldanha Bay, as other areas were either inaccessible or inside the 'no take' MPA. ...
Context 5
... all analyses, weekend days included all Saturdays, Sundays and public holidays; data from the same season were grouped regardless of sampling year, and austral seasons were defined as: summer (December-February), autumn (March-May), winter (June-August) and spring (September-November). When describing the spatial component of each fishery, instantaneous boat-count data were divided by area of the zone surveyed ( Figure 1), effectively standardising to per km 2 . Instantaneous boat-count data were unable to distinguish between recreational and commercial vessels; this information was gathered from access-point (slipway) surveys. ...
Context 6
... Bay is a large (115 km 2 ) sheltered bay on the west coast of South Africa, and extends parallel to the coast into Langebaan Lagoon, which is protected by the West Coast National Park (Figure 1). The lagoon has a 34 km 2 'no take' MPA situated at the southern end. ...
Context 7
... dates and times of the counts were determined randomly at the beginning of the month, based on the following three conditions: (1) there was only one count (from each point) on any single day; (2) that the ratio of weekend to weekday counts was 1:3; and (3) that times were limited to daylight hours. Saldanha Bay was subdivided into eight zones, and each zone was entirely visible from at least one vantage point (Figure 1). The observer made a distinction between boats that were linefishing and gillnetting (targeting southern mullet Liza richardsonii). ...
Context 8
... launch from and return to four landing sites in Saldanha Bay, namely the Langebaan Yacht Club, Alabama slipway, Club Mykonos, and Pepper Bay slipway ( Figure 1). A survey clerk visited each of the four boat landing sites four times a month according to a random schedule with the same three sampling constraints described above. ...
Context 9
... creel surveys were undertaken four times per month at each of the four recreational shore fishing areas: Langebaan rocks, Mykonos beach, Dam and Saldanha (Figure 1). These areas covered the majority of shore angling spots in Saldanha Bay, as other areas were either inaccessible or inside the 'no take' MPA. ...
Context 10
... all analyses, weekend days included all Saturdays, Sundays and public holidays; data from the same season were grouped regardless of sampling year, and austral seasons were defined as: summer (December-February), autumn (March-May), winter (June-August) and spring (September-November). When describing the spatial component of each fishery, instantaneous boat-count data were divided by area of the zone surveyed ( Figure 1), effectively standardising to per km 2 . Instantaneous boat-count data were unable to distinguish between recreational and commercial vessels; this information was gathered from access-point (slipway) surveys. ...
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