Comparison of fish assemblages among an artificial reef, a natural reef and a sandy-mud bottom site on the shelf off Iwate, northern Japan

Fujita, Toshihiko; Kitagawa, Daiji; Okuyama, Yusaku; Jin, Y.; Ishito, Yoshio; Inada, Tadashi

doi:10.1007/bf00005013

Cited by 18 publications

(14 citation statements)

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“…Demersal fish communities on sandy bottoms differ from those on reef bottoms (Fujita et al, 1996), and disturbance from fisheries practices may affect Table 4. p-values according to pairwise significance tests of differences in the demersal fish community structure among the three periods distinguished according to one-way ANOSIM.…”

Section: Discussionmentioning

confidence: 99%

Long-term monitoring of the demersal fish community in a steel-slag disposal area in the coastal waters of Kaohsiung, Taiwan

Chou¹

2002

ICES Journal of Marine Science

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monitoring of the demersal fish community in a steel-slag disposal area in the coastal waters of Kaohsiung, Taiwan. -ICES Journal of Marine Science, 59: S238-S242.Dumping of approximately two million tonnes of steel slag in a shallow (ca. 40 m), sandy-bottom area in southern Taiwan from 1984 to 1989 has caused major changes of the substrate. After cessation of slag disposal, the demersal fish community in the area was monitored for 9 years (1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998). Species richness and the Shannon diversity index at the disposal site and a control site were significantly different, while the number of individuals and the Index of Multivariate Dispersion, as a measure of relative variation, were not. Splitting the data according to three 3-year periods did not reveal significant differences in any of the univariate community metrics. However, multivariate analysis revealed significant temporal differences, dispersion becoming smaller over time. It is concluded that slag disposal created a reef-like habitat and the associated fish fauna had a higher diversity than that seen on the sandy bottom present originally, partly caused by increased habitat complexity and partly by diversion of fishing activities because of potential gear damage. However, in the long run the ecological benefits may not last because the habitat is gradually being covered up again by sand.

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Section: Discussionmentioning

confidence: 99%

Long-term monitoring of the demersal fish community in a steel-slag disposal area in the coastal waters of Kaohsiung, Taiwan

Chou¹

2002

ICES Journal of Marine Science

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“…Most previous studies investigating the correlation between habitat complexity and marine fish community structure have been descriptive and conducted on natural reef systems (McCormick 1994;Beukers and Jones 1997;Ohman and Rajasuriya 1998) with few controlled experimental studies (Talbot et al 1978;Hixon and Beets 1989;Fujita et al 1996). While these studies have contributed significantly to understanding reef fish communities, a persistent difficulty has been low replication.…”

Section: Introductionmentioning

confidence: 97%

“…While these studies have contributed significantly to understanding reef fish communities, a persistent difficulty has been low replication. For example, Hixon and Beets (1989) used two replicates of four treatments, Talbot et al (1978) used four replicates of four treatments, and Fujita et al (1996) used one replicate of three treatments. Bonhsack and Sutherland (1985) stressed the need for controlled experimentation in marine ecological studies and suggested that artificial habitats could provide an ideal tool for testing habitat complexity hypotheses.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Habitat Complexity on Reef Fish Communities in the Northeastern Gulf of Mexico

Lingo

Szedlmayer

2006

Environ Biol Fish

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Several previous studies have attempted to correlate habitat complexity and reef fish species diversity. These studies have mostly examined natural reef systems, but results differed. To examine this relation, we built 1 m 2 habitats with 20 replicates of five complexity levels from July to August 2001 in the northeastern Gulf of Mexico (n=100). In June and July 2002, we built new habitats using the 2001 design, but also added a sixth complexity level (n=120). In order of increasing complexity these included: cage, shell, cage-shell, block-shell, cage-block-shell, and shellblock-pyramid habitats. Most fish in both years were juveniles and included species common to reef structures in the northeastern Gulf of Mexico. In 2001, we identified 26 fish species, and the dominant species was red snapper, Lutjanus campechanus (41%), followed by rock sea bass, Centropristis philadelphica (23%), and sand perch, Diplectrum spp. (14%). In 2002 we identified 36 species, and the dominant species was tomtate, Haemulon aurolineatum (36%), followed by Diplectrum spp. (19%), and L. campechanus (13%). In 2001, species diversity and richness were significantly (P < 0.05) higher on more complex habitats (H¢=1.7, S=11-12) compared to less complex habitats (H¢=0.8-1.0, S=4-9). In 2002, patterns among diversity, richness and reef complexity were less apparent with only the least complex habitats shell and cage showing significantly lower values. In both years, multidimensional scaling grouped by complexity levels with cage and shell habitats showing the clearest separation from other habitat types. Also, with few exceptions (only 8%) analysis of similarities showed significant (P < 0.05) differences in fish communities across complexity levels. Although community composition varied between years, this study provided evidence to support the hypothesis that habitat complexity increased reef fish species diversity.

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“…Several authors have ascribed this result to the attractive effect of ARs. Cases of similar fishing yields at ARs and NRs are rare in the literature (Bombace et al 1994, Fujita et al 1996 because the results are not published if no positive effect is found. Moreover, although the fish catch (in terms of biomass) was greater at the NR than at the AR at Valras, this difference was due to the presence near the NR of large individuals whose commercial value to the artisanal fishermen was low.…”

Section: Ars Vs Nrsmentioning

confidence: 99%

A case study of artificial reefs as a potential tool for maintaining artisanal fisheries in the French Mediterranean Sea

Prigent‐Tessier¹,

Verdoit‐Jarraya²,

Blouet³

et al. 2014

Aquat. Biol.

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The aim of this study was to obtain information allowing an initial assessment of the potential of French Mediterranean artificial reefs (ARs) as a management tool to aid artisanal fishermen. The study focuses on 3 ARs located along the Gulf of Lion coastline in the French Mediterranean Sea. At the end of spring 2012, experimental fishing with trammel nets was conducted at ARs and natural rocky areas (NRs) at various distances from the ARs/NRs (0, 300 and 900 m). The yields of fish and invertebrates were analyzed at the AR sites to identify significant changes along a distance gradient and to determine whether there was a significant difference between ARs and NRs. The AR yields of species preferring rocky substrates were generally higher between 0 and 300 m from the ARs than beyond 300 m, whereas the yields of species preferring sandy substrates or of invertebrates did not differ between 0 and 900 m from the ARs. Furthermore, the AR yields were equal to the NR yields or were between 1.5-and 1.8-fold higher than the NR yields. Overall, this study indicates that success varied by species, fishing locality and distance from the reef. ARs could be a potentially effective tool for enhancing artisanal fishing along the French Mediterranean coasts. However, it would be necessary to establish management measures to avoid overexploitation. For instance, in terms of the configuration of the AR areas in a given locality, a notake area could be established within a radius of 300 m around the ARs. KEY WORDS: Fish assemblage · Soleidae · Trammel net · Catches · Gulf of LionResale or republication not permitted without written consent of the publisher Aquat Biol 20: 255-272, 2014 French Mediterranean coastal fishing fleet (1545 vessels) in 2010. However, French Mediterranean artisanal fishing has been declining since the end of the 1980s. Between 1986 and, the number of vessels in the artisanal fleet decreased by 50% (Guillou & Crespi 1999) and fell a further 8% between (Guillou & Crespi 1999, IFREMER 2012.This decline in France and in other Mediterranean countries is a notable consequence of increased fishing effort in terms of the engine power and increased capacity of fishing equipment for both artisanal and industrial fisheries. This increased effort has caused the overexploitation of stocks of target species (Pinnegar & Polunin 2004). Furthermore, other anthropogenic pressures, such as sewage pollution, littoral construction and tourism, have also degraded littoral ecosystems (Gómez et al. 2006).Governments emphasize the preservation of artisanal fishing because of its sustainability, due to its use of fishing techniques that are selective in terms of target species and capture size (Forcada et al. 2010). Furthermore, artisanal fishing causes less damage to the seabed and consumes less fuel than industrial or semi-industrial fishing (Forcada et al. 2010). In this context, local authorities have deployed artificial reefs (ARs) along the French Mediterranean coast since the 1980s, notably along the LanguedocRo...

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Comparison of fish assemblages among an artificial reef, a natural reef and a sandy-mud bottom site on the shelf off Iwate, northern Japan

Cited by 18 publications

References 14 publications

Long-term monitoring of the demersal fish community in a steel-slag disposal area in the coastal waters of Kaohsiung, Taiwan

Long-term monitoring of the demersal fish community in a steel-slag disposal area in the coastal waters of Kaohsiung, Taiwan

The Influence of Habitat Complexity on Reef Fish Communities in the Northeastern Gulf of Mexico

A case study of artificial reefs as a potential tool for maintaining artisanal fisheries in the French Mediterranean Sea

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