The impact of beach-seine netting on the benthic flora and fauna of False Bay, South Africa

Lamberth, S. J.; Bennett, Bruce; Clark, B. M.; Janssens, P. M.

doi:10.2989/02577619509504838

Cited by 10 publications

(9 citation statements)

References 3 publications

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“…This is in agreement with the findings in False Bay, South Africa, where no evidence was found to suggest that beach seine netting adversely affected the benthic flora and invertebrate fauna (Lamberth et al . ). A driving factor for stable benthic community in the impact site might be inherent resistance of the benthic community to mechanical stress ( e.g .…”

Section: Discussionmentioning

confidence: 97%

“…The sole study on the impact of beach seining on invertebrate fauna indicated no evidence of an adverse effect (Lamberth et al . ).…”

Section: Introductionmentioning

confidence: 97%

“…Lamberth et al . ). Given the lack of any research dedicated to understanding the responses of benthic invertebrates to beach seining, the present study aims to explore the impact of beach seining on benthic community and sediment structure (including total organic matter, chlorophyll‐ a and pheopigment or non‐photosynthetic pigment contents), and to assess the recovery trend after closing the seining operation in the Southern Caspian Sea.…”

Section: Introductionmentioning

confidence: 97%

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Does beach seine fishery permanently alter macroinvertebrate communities and sediment characteristics in the Southern Caspian Sea?

2014

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The impacts of a beach seine fishery on macroinvertebrate communities and sediment characteristics were investigated in the Southwest Caspian Sea. Samples from a single impacted site that was regularly seined were compared with two control sites outside the fishing area. Benthic macroinvertebrates were sampled on four occasions: 6 months prior to the opening of the beach seine fishery (Time 1), 1 day immediately after the closing of beach seining (Time 2), 1 week after closing (Time 3), and 1 month after closing (Time 4). No significant differences were detected in total density, Shannon diversity, or evenness of the macroinvertebrate assemblages between impact and control sites. Unlike density, species richness increased significantly immediately after fishery closure at all sites. A significant difference was detected in the number of species between Time 2 and Time 3 at all sites and the number of species was reduced at Time 4 in all sites. Pontogammarids increased by twofold in the impact site 1 day immediately after closing beach seine fishery and leveled off toward the end of the closed season. The amplified density of pontogammarids 1 day after fishery closing at the impact site might be driven in part by an increase in sediment oxygen content resulting from disturbance of the sea floor. An alternative explanation is that the effect of fish predation on pontogammarids has largely been minimized at the impact site after 6 months of continuous fishing activity. No significant changes in the sedimentary organic content and chlorophyll-a between the impact and control sites were observed during the courses of sampling; however, a significant change occurred between the average sedimentary pheopigment content of the control sites and that of the impact site. The conclusion from the present study is that beach seine fishery does not harm to benthic communities. The closed season also seemed to allow recovery to pre-season levels of macroinvertebrate richness and sedimentary chlorophyll-a.

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Section: Discussionmentioning

confidence: 97%

“…The sole study on the impact of beach seining on invertebrate fauna indicated no evidence of an adverse effect (Lamberth et al . ).…”

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

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Does beach seine fishery permanently alter macroinvertebrate communities and sediment characteristics in the Southern Caspian Sea?

2014

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“…ence the capture efficiency of beach seine nets (Hunter & Wisby 1964, Lyons 1986, Pierce et al 1990, Romer 1990, Lamberth et al 1995, we believe that in the case DISCUSSION of this study these influences were probably minimal. Capture efficiency may have been reduced under conMarked differences were evident between the fish ditions of heavy surf or low turbidity, when the net was assemblages recorded at the 11 sites studied during lifted over rocky obstacles or when large quantities of this survey.…”

Section: G Aestuariamentioning

confidence: 91%

“…Comparisons have thus largely been limited to discussions concerning dominant taxa or families only, as it is well known that comparison.s made between samples collected over different time periods, using different gear, or even by different researchers are fraught with problems (Ross 1983, Lasiak 1984a, Bennett 1989a, Pierce et al 1990, Gibson et al 1993, Lamberth et al 1995. The aim of this study was thus to compile a comprehensive data set of surf zone fish samples collected simultaneously from a number of sites over an extended time period, using the same equipment, personnel and methodologies.…”

Section: Introductionmentioning

confidence: 99%

Factors affecting spatial variability in seine net catches of fish in the surf zone of False Bay, South Africa

Bm¹,

Ba²,

Sj³

1996

Mar. Ecol. Prog. Ser.

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Ichthyofaunal assemblages at 11 surf zone localities along the perimeter of False Bay South Afnca were sampled by seine netting at monthly intervals between July 1991 and J u n e 1993 Sampllng localit~es were selected to encompass as wide a range of physical vanables as possible incorporatlng sheltered, exposed, sandy and mixed-shore habitats, thus providing a colnprehensive assessment of the factors lnfluenclng surf zone fish assemblages Data collected at each site were averaged over the 2 yr p e i~o d in order to highlight the influence of various physical environnlental vanables on the abundance and co~nmunity structure ot these assemblages Athenr~a brevlceps, Liza rlchardsonii and Rhahdosarg~ls gloh~ceps were numeiically domlnant at all sites together providing between 69 and 99%) of the catches Overall catches of juvenile flsh exceeded that ot adult fish, making up almost 53 of the catch Fish abundance (no ind per 100 m') and number of species recorded at each site ranged from 6 to 199 and from 12 to 31 respectivel) Multivdriate analyses Indicated that the deglee of wave exposure the presencc of emergent rock on the shore dnd turbid~ty were responsible for most of the s p a t~a l vanab~lity in abundance and community structure observed Although of lesser importance abundance of detached macrophytes salinity dnd water temperature also played a role in structuring fish assemblages Species specific preferences for varying combinations of these var~ables are responsible for fluctuations in the structure and overall abundance of assemblages in different a r e a

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Fish Capture Devices in Industrial and Artisanal Fisheries and their Influence on Management

Misund¹,

Kolding²,

Fréon³

2008

Handbook of Fish Biology and Fisheries, Volume 2

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The impact of beach-seine netting on the benthic flora and fauna of False Bay, South Africa

Cited by 10 publications

References 3 publications

Does beach seine fishery permanently alter macroinvertebrate communities and sediment characteristics in the Southern Caspian Sea?

Does beach seine fishery permanently alter macroinvertebrate communities and sediment characteristics in the Southern Caspian Sea?

Factors affecting spatial variability in seine net catches of fish in the surf zone of False Bay, South Africa

Fish Capture Devices in Industrial and Artisanal Fisheries and their Influence on Management

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