A survey of stock of the donkey’s ear abalone, Haliotis asinina L. in the Sagay Marine Reserve, Philippines: evaluating the effectiveness of marine protected area enforcement

Maliao, Ronald J.; Webb, Edward L.; Jensen, Kathe R.

doi:10.1016/s0165-7836(03)00181-4

Cited by 41 publications

(42 citation statements)

References 23 publications

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“…The underlined fish groups had significant density between categories. Statistics are given in Table 3 previous analyses of the Philippine reserves (e.g., Alcala 2003, 2004;Maliao et al 2004;Russ et al 2005;Alcala et al 2005). This finding is also consistent with the results of previous assessment of reserves on coral reefs elsewhere (Friedlander et al 2003;Graham et al 2003;McClanahan et al 2007;Harborne et al 2008).…”

Section: Discussionmentioning

confidence: 99%

“…In fact, density of exploited fishes in less-enforced reserves significantly declined after years of protection, suggesting the prevalence of poaching. Poaching, generally cited as the major cause of the widespread failure of reserves in the Philippines Walmsley and White 2003;Maliao et al 2004Maliao et al , 2009Russ 2006), as well as worldwide (Mora et al 2006), can quickly negate the long-term and short-term positive effects of establishing the reserve. However, this result is highly variable across sites, which could be linked to the geographical location of the reserve.…”

Section: Discussionmentioning

confidence: 99%

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Trajectories and magnitude of change in coral reef fish populations in Philippine marine reserves: a meta-analysis

et al. 2009

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Marine reserves are widely implemented worldwide to meet both conservation and fisheries management goals. This study examines the efficacy of Philippine marine reserves using meta-analysis by comparing variations in fish density (1) between reserves and adjacent fished reefs (spatial comparison), (2) within reserves before establishment relative to years following the establishment (temporal comparison), and (3) among reserves classified based on size, age, and enforcement capacity. A grand (total) mean of nineteen 22.3 ha coral reef reserves, protected for a mean duration of 8.2 years, were included in the meta-analyses. The overall density of fishes was higher in the reserves compared with the fished reefs and this difference was largely accounted for by exploited fishes. However, the overall density of fishes within the same reserves remained similar from the period before its establishment to several years following its establishment.Only the density of nonexploited fishes increased significantly during years subsequent to the establishment of the reserves. Neither age nor size of reserves correlated with pattern of change in fish density following the establishment of the reserves; however, fish density was consistently higher in larger and older reserves relative to smaller and younger reserves in the spatial comparison. Furthermore, well-enforced reserves had higher density of exploited fishes relative to less-enforced reserves in both spatial and temporal comparisons. In general, the magnitude and trajectory of change in fish density following the establishment of Philippine marine reserves are influenced by (1) functional groups of fishes under consideration, (2) size and age of the reserve, and (3) level of enforcement of the regulatory mechanisms necessary to sustain a marine reserve.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Trajectories and magnitude of change in coral reef fish populations in Philippine marine reserves: a meta-analysis

et al. 2009

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“…Studies on the biology and ecology of bivalve mollusks are fundamental to establish management programs that aim at maintaining their natural populations, thus contributing to the development of sustainable extraction and mariculture (Moreira, 2007). Hence, the determination of the potential for sustainable exploitation of fishing resources needs to be based on population assessment and studies of population dynamics (Deffeo, 1998;Maliao et al, 2004;Deffeo and Castilla, 2005).…”

Section: Introductionmentioning

confidence: 99%

Population structure of the bivalve Anomalocardia brasiliana, (Gmelin, 1791) in the semi-arid estuarine region of northeastern Brazil

et al. 2013

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For several decades, the bivalve mollusk Anomalocardia brasiliana has been extracted in estuarine areas in the semi-arid region of northeastern Brazil. However, information on both dynamics and abundance of their populations are missing. In this context, the present study, therefore, investigated several aspects of the population structure of A. brasiliana on beaches near the estuary of the Apodi River in Northeast Brazil. The aims were to determine the population density of A. brasiliana during different times of the year, to estimate population parameters, and to relate species density and distribution to the abiotic characteristics of the region. Keywords: bivalve mollusk, growth, recruitment, estuary, tropical. Estrutura populacional do bivalve

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“…At Site 4, only empty shells of trochus were found, indicating that they have occurred in the past on the reef (Figure 4). The findings of the study showing that trochus density was higher and size structure dominated by large individuals in fully protected areas than in exploited areas are to be expected as shown by many studies on various marine species on coral reefs [37][38][39][40]. Generally, the greatest abundance of adults occurred at the intertidal area with decreasing abundance towards the deep [5], while the juveniles are restricted in the intertidal flats [41,42].…”

Section: Abundancementioning

confidence: 71%

Spatial and Temporal Abundance of the reef gastropod Tectus niloticus (Gastropoda: Tegulidae) in Marine Protected Areas in Palawan, Philippines: Prospects for Conservation

Dolorosa

Grant

Gill

2016

IJEE

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A survey of stock of the donkey’s ear abalone, Haliotis asinina L. in the Sagay Marine Reserve, Philippines: evaluating the effectiveness of marine protected area enforcement

Cited by 41 publications

References 23 publications

Trajectories and magnitude of change in coral reef fish populations in Philippine marine reserves: a meta-analysis

Trajectories and magnitude of change in coral reef fish populations in Philippine marine reserves: a meta-analysis

Population structure of the bivalve Anomalocardia brasiliana, (Gmelin, 1791) in the semi-arid estuarine region of northeastern Brazil

Spatial and Temporal Abundance of the reef gastropod Tectus niloticus (Gastropoda: Tegulidae) in Marine Protected Areas in Palawan, Philippines: Prospects for Conservation

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