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Dr. Atsuko Fukunaga
University of Hawai‘i at Mānoa, Joint Institute for Marine and Atmospheric Research

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Research Keywords & Expertise

0 Coral Reefs
0 Multivariate Analysis
0 underwater photogrammetry
0 Benthic marine ecology
0 Ecological statistical analysis

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Coral Reefs
underwater photogrammetry

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Journal article
Published: 15 November 2020 in Diversity
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The architectural complexity of coral-reef habitat plays an important role in determining the assemblage structure of reef fish. We investigated associations between the reef habitats and fish assemblages in the Northwestern Hawaiian Islands (NWHI) using in situ fish counts and data on habitat metrics and benthic community composition that were obtained from three-dimensional (3D) photogrammetric reconstructions of the surveyed sites. The structure of fish assemblage as a whole on the basis of Bray–Curtis dissimilarity, species richness and the abundances of herbivores and piscivores were associated with habitat metrics, with higher levels of architectural complexity generally supporting greater numbers of fish species and individuals. Benthic cover did not explain additional variation in these variables after the effects of habitat metrics were taken into account. Corallivorous fish was the only group that showed positive associations with both habitat metrics and benthic cover (Acropora and Pocillopora corals). The total fish abundance and the abundances of planktivores and invertivores did not show associations with either habitat metrics or benthic cover. This study suggests that an appropriate combination of habitat metrics can be used to account sufficiently for the effects of habitat architecture on fish assemblages in reef monitoring efforts in the NWHI.

ACS Style

Atsuko Fukunaga; Randall K. Kosaki; Kailey H. Pascoe; John H. R. Burns. Fish Assemblage Structure in the Northwestern Hawaiian Islands Is Associated with the Architectural Complexity of Coral-Reef Habitats. Diversity 2020, 12, 430 .

AMA Style

Atsuko Fukunaga, Randall K. Kosaki, Kailey H. Pascoe, John H. R. Burns. Fish Assemblage Structure in the Northwestern Hawaiian Islands Is Associated with the Architectural Complexity of Coral-Reef Habitats. Diversity. 2020; 12 (11):430.

Chicago/Turabian Style

Atsuko Fukunaga; Randall K. Kosaki; Kailey H. Pascoe; John H. R. Burns. 2020. "Fish Assemblage Structure in the Northwestern Hawaiian Islands Is Associated with the Architectural Complexity of Coral-Reef Habitats." Diversity 12, no. 11: 430.

Journal article
Published: 19 August 2020
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Underwater photogrammetry has been increasingly used in coral-reef research in recent years. Habitat metrics extracted from resulting three-dimensional (3D) reconstructions can be used to examine associations between the structural complexity of the reef habitats and the distribution of reef organisms. We created simulated 3D models of bare surface structures and 3D reconstructions of coral morphologies to investigate the behavior of various habitat metrics that were extracted from both Digital Elevation Models (DEMs) and 3D mesh models. Analyzing the resulting values provided us with important insights into how these metrics would compare with one another in the characterization of coral-reef habitats. Surface complexity (i.e., reef rugosity), fractal dimension extracted from DEMs and vector dispersion obtained from 3D mesh models exhibited consistent patterns in the ranking of structural complexity among the simulated bare surfaces and coral morphologies. The vector ruggedness measure obtained from DEMs at three different resolutions of 1, 2, and 4 cm effectively captured differences in the structural complexity among different coral morphologies. Profile curvature and planform curvature, on the other hand, were better suited to capture the structural complexity derived from surface topography such as walls and overhanging ledges. Our results indicate that habitat metrics extracted from DEMs are generally suitable when characterizing a relatively large plot of a coral reef captured from an overhead planar angle, while the 3D metric of vector dispersion is suitable when characterizing a coral colony or a relatively small plot methodically captured from various angles.

ACS Style

Atsuko Fukunaga; John H. R. Burns. Metrics of Coral Reef Structural Complexity Extracted from 3D Mesh Models and Digital Elevation Models. 2020, 12, 1 .

AMA Style

Atsuko Fukunaga, John H. R. Burns. Metrics of Coral Reef Structural Complexity Extracted from 3D Mesh Models and Digital Elevation Models. . 2020; 12 (17):1.

Chicago/Turabian Style

Atsuko Fukunaga; John H. R. Burns. 2020. "Metrics of Coral Reef Structural Complexity Extracted from 3D Mesh Models and Digital Elevation Models." 12, no. 17: 1.

Journal article
Published: 19 August 2020 in Remote Sensing
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Underwater photogrammetry has been increasingly used in coral-reef research in recent years. Habitat metrics extracted from resulting three-dimensional (3D) reconstructions can be used to examine associations between the structural complexity of the reef habitats and the distribution of reef organisms. We created simulated 3D models of bare surface structures and 3D reconstructions of coral morphologies to investigate the behavior of various habitat metrics that were extracted from both Digital Elevation Models (DEMs) and 3D mesh models. Analyzing the resulting values provided us with important insights into how these metrics would compare with one another in the characterization of coral-reef habitats. Surface complexity (i.e., reef rugosity), fractal dimension extracted from DEMs and vector dispersion obtained from 3D mesh models exhibited consistent patterns in the ranking of structural complexity among the simulated bare surfaces and coral morphologies. The vector ruggedness measure obtained from DEMs at three different resolutions of 1, 2, and 4 cm effectively captured differences in the structural complexity among different coral morphologies. Profile curvature and planform curvature, on the other hand, were better suited to capture the structural complexity derived from surface topography such as walls and overhanging ledges. Our results indicate that habitat metrics extracted from DEMs are generally suitable when characterizing a relatively large plot of a coral reef captured from an overhead planar angle, while the 3D metric of vector dispersion is suitable when characterizing a coral colony or a relatively small plot methodically captured from various angles.

ACS Style

Atsuko Fukunaga; John Burns. Metrics of Coral Reef Structural Complexity Extracted from 3D Mesh Models and Digital Elevation Models. Remote Sensing 2020, 12, 2676 .

AMA Style

Atsuko Fukunaga, John Burns. Metrics of Coral Reef Structural Complexity Extracted from 3D Mesh Models and Digital Elevation Models. Remote Sensing. 2020; 12 (17):2676.

Chicago/Turabian Style

Atsuko Fukunaga; John Burns. 2020. "Metrics of Coral Reef Structural Complexity Extracted from 3D Mesh Models and Digital Elevation Models." Remote Sensing 12, no. 17: 2676.

Letter
Published: 21 March 2020 in Remote Sensing
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Quantifying the three-dimensional (3D) habitat structure of coral reefs is an important aspect of coral reef monitoring, as habitat architecture affects the abundance and diversity of reef organisms. Here, we used photogrammetric techniques to generate 3D reconstructions of coral reefs and examined relationships between benthic cover and various habitat metrics obtained at six different resolutions of raster cells, ranging from 1 to 32 cm. For metrics of 3D structural complexity, fractal dimension, which utilizes information on 3D surface areas obtained at different resolutions, and vector ruggedness measure (VRM) obtained at 1-, 2- or 4-cm resolution correlated well with benthic cover, with a relatively large amount of variability in these metrics being explained by the proportions of corals and crustose coralline algae. Curvature measures were, on the other hand, correlated with branching and mounding coral cover when obtained at 1-cm resolution, but the amount of variability explained by benthic cover was generally very low when obtained at all other resolutions. These results show that either fractal dimension or VRM obtained at 1-, 2- or 4-cm resolution, along with curvature obtained at 1-cm resolution, can effectively capture the 3D habitat structure provided by specific benthic organisms.

ACS Style

Atsuko Fukunaga; John H. R. Burns; Kailey H. Pascoe; Randall K. Kosaki. Associations between Benthic Cover and Habitat Complexity Metrics Obtained from 3D Reconstruction of Coral Reefs at Different Resolutions. Remote Sensing 2020, 12, 1011 .

AMA Style

Atsuko Fukunaga, John H. R. Burns, Kailey H. Pascoe, Randall K. Kosaki. Associations between Benthic Cover and Habitat Complexity Metrics Obtained from 3D Reconstruction of Coral Reefs at Different Resolutions. Remote Sensing. 2020; 12 (6):1011.

Chicago/Turabian Style

Atsuko Fukunaga; John H. R. Burns; Kailey H. Pascoe; Randall K. Kosaki. 2020. "Associations between Benthic Cover and Habitat Complexity Metrics Obtained from 3D Reconstruction of Coral Reefs at Different Resolutions." Remote Sensing 12, no. 6: 1011.

Journal article
Published: 28 January 2019 in Journal of Marine Science and Engineering
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Long-term ecological monitoring of reef fish populations often requires the simultaneous collection of data on benthic habitats in order to account for the effects of these variables on fish assemblage structure. Here, we described an approach to benthic surveys that uses photogrammetric techniques to facilitate the extraction of quantitative metrics for characterization of benthic habitats from the resulting three-dimensional (3D) reconstruction of coral reefs. Out of 92 sites surveyed in the Northwestern Hawaiian Islands, photographs from 85 sites achieved complete alignment and successfully produced 3D reconstructions and digital elevation models (DEMs). Habitat metrics extracted from the DEMs were generally correlated with one another, with the exception of curvature measures, indicating that complexity and curvature measures should be treated separately when quantifying the habitat structure. Fractal dimension D64, calculated by changing resolutions of the DEMs from 1 cm to 64 cm, had the best correlations with other habitat metrics. Fractal dimension was also less affected by changes in orientations of the models compared to surface complexity or slope. These results showed that fractal dimension can be used as a single measure of complexity for the characterization of coral reef habitats. Further investigations into metrics for 3D characterization of habitats should consider relevant spatial scales and focus on obtaining variables that can complement fractal dimension in the characterization of reef habitats.

ACS Style

Atsuko Fukunaga; John H. R. Burns; Brianna K. Craig; Randall K. Kosaki. Integrating Three-Dimensional Benthic Habitat Characterization Techniques into Ecological Monitoring of Coral Reefs. Journal of Marine Science and Engineering 2019, 7, 27 .

AMA Style

Atsuko Fukunaga, John H. R. Burns, Brianna K. Craig, Randall K. Kosaki. Integrating Three-Dimensional Benthic Habitat Characterization Techniques into Ecological Monitoring of Coral Reefs. Journal of Marine Science and Engineering. 2019; 7 (2):27.

Chicago/Turabian Style

Atsuko Fukunaga; John H. R. Burns; Brianna K. Craig; Randall K. Kosaki. 2019. "Integrating Three-Dimensional Benthic Habitat Characterization Techniques into Ecological Monitoring of Coral Reefs." Journal of Marine Science and Engineering 7, no. 2: 27.

Journal article
Published: 31 July 2017 in PeerJ
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A distance-based multivariate control chart is a useful tool for ecological monitoring to detect changes in biological community resulting from natural or anthropogenic disturbances at permanent monitoring sites. It is based on a matrix of any distances or dissimilarities among observations obtained from species composition and abundance data, and bootstrapping techniques are used to set upper confidence bounds that trigger an alarm for further investigations. We extended the use of multivariate control charts to stratified random sampling and analyzed reef fish monitoring data collected annually on shallow (≤30 m) reefs across the Northwestern Hawaiian Islands (NWHI), part of the Papahānaumokuākea Marine National Monument. Fish assemblages in the NWHI were mostly stable, with exceptions in the south region (Nihoa, Mokumanamana and French Frigate Shoals) in 2012 and 2015 where changes in the assemblage structure exceeded the upper confidence bounds of multivariate control charts. However, these were due to changes in relative abundances of native species, and potentially related to the small numbers of survey sites and relatively low coral covers at the sites, particularly in 2015. The present study showed that multivariate control charts can be used to evaluate the status of biological communities in a very large protected area. Future monitoring of fish assemblages in the Papahānaumokuākea Marine National Monument should be accompanied by specific habitat or environmental variables that are related to potential threats to its shallow-water ecosystems. This should allow for more detailed investigations into potential causes and mechanisms of changes in fish assemblages when a multivariate control chart triggers an alarm.

ACS Style

Atsuko Fukunaga; Randall K. Kosaki. Use of multivariate control charts to assess the status of reef fish assemblages in the Northwestern Hawaiian Islands. PeerJ 2017, 5, e3651 .

AMA Style

Atsuko Fukunaga, Randall K. Kosaki. Use of multivariate control charts to assess the status of reef fish assemblages in the Northwestern Hawaiian Islands. PeerJ. 2017; 5 ():e3651.

Chicago/Turabian Style

Atsuko Fukunaga; Randall K. Kosaki. 2017. "Use of multivariate control charts to assess the status of reef fish assemblages in the Northwestern Hawaiian Islands." PeerJ 5, no. : e3651.

Journal article
Published: 23 May 2017 in Fishes
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Aggressive invasions by species such as para grass Urochloa mutica (Forssk.) are pervasive throughout the tropics, but the impacts on estuarine habitats and biota are poorly understood. After weed control was reduced in a tropical estuary, U. mutica reinvaded this area composed of two contiguous habitats: a shallow pond and a deeper river. These habitats are especially important for Mugil cephalus, a culturally prized native mullet, and introduced Moolgarda engeli not targeted in the fishery. We investigated the potential impacts of U. mutica on juvenile and adult mullets by comparing the catch per unit effort (CPUE) of the two mullet species and the physiochemical measurements from the two contiguous habitats during different stages of its reinvasion. Overall, negative effects on the CPUE of M. cephalus and M. engeli were found as a result of the U. mutica reinvasion. The M. cephalus CPUE was consistently higher in the shallow pond habitat compared to the deeper river habitat. It decreased after U. mutica was established, correlative to the invasive grass canopies smothering the shallow habitat favored by juveniles. The M. engeli CPUE significantly declined during the initial periods of U. mutica reinvasion, but did not decline further after the grass became established. No differences in the M. engeli CPUE between habitats were found, indicating that M. engeli are habitat generalists. These findings are among the first in an insular tropical estuary demonstrating a negative relationship between an invasive grass and relative abundances of two confamiliar fish, while revealing distinct patterns attributed to species-specific traits. Importantly, the broad overlapping biogeographic distribution of M. cephalus and U. mutica, and the negative relationship between these species, raises widespread concern for this mullet as a globally important fisheries species.

ACS Style

Troy S. Sakihara; Atsuko Fukunaga; Kimberly A. Peyton. Mugilids Display Distinct Trait-Mediated Patterns with a Reinvasion of Para Grass Urochloa mutica in a Tropical Estuary. Fishes 2017, 2, 7 .

AMA Style

Troy S. Sakihara, Atsuko Fukunaga, Kimberly A. Peyton. Mugilids Display Distinct Trait-Mediated Patterns with a Reinvasion of Para Grass Urochloa mutica in a Tropical Estuary. Fishes. 2017; 2 (2):7.

Chicago/Turabian Style

Troy S. Sakihara; Atsuko Fukunaga; Kimberly A. Peyton. 2017. "Mugilids Display Distinct Trait-Mediated Patterns with a Reinvasion of Para Grass Urochloa mutica in a Tropical Estuary." Fishes 2, no. 2: 7.

Note
Published: 15 March 2017 in Coral Reefs
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Mesophotic coral ecosystems (MCEs) extend from 30 to 150 m in depth and support diverse communities of marine organisms. We investigated changes in the structure of mesophotic reef fish assemblages (27–100 m) in the Northwestern Hawaiian Islands (NWHI) along depth and geographical gradients using open- and closed-circuit trimix diving. There were clear changes in the assemblage structure from the southeastern to the northwestern end of the NWHI and from shallow to deep waters. Interactive effects of depth and location were also detected. MCEs in the NWHI can be treated as three regions: southeastern and mid regions primarily separated by the presence and absence, respectively, of the introduced species Lutjanus kasmira, and a northwestern region where fish assemblages are largely composed of endemic species. These spatial patterns may be explained, at least in part, by differences in temperature among the regions.

ACS Style

Atsuko Fukunaga; Randall K. Kosaki; Daniel Wagner. Changes in mesophotic reef fish assemblages along depth and geographical gradients in the Northwestern Hawaiian Islands. Coral Reefs 2017, 36, 785 -790.

AMA Style

Atsuko Fukunaga, Randall K. Kosaki, Daniel Wagner. Changes in mesophotic reef fish assemblages along depth and geographical gradients in the Northwestern Hawaiian Islands. Coral Reefs. 2017; 36 (3):785-790.

Chicago/Turabian Style

Atsuko Fukunaga; Randall K. Kosaki; Daniel Wagner. 2017. "Changes in mesophotic reef fish assemblages along depth and geographical gradients in the Northwestern Hawaiian Islands." Coral Reefs 36, no. 3: 785-790.

Journal article
Published: 01 January 2017 in BioInvasions Records
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ACS Style

Atsuko Fukunaga; Randall Kosaki; Brian Hauk. Distribution and abundance of the introduced snapper Lutjanus kasmira (Forsskål, 1775) on shallow and mesophotic reefs of the Northwestern Hawaiian Islands. BioInvasions Records 2017, 6, 259 -268.

AMA Style

Atsuko Fukunaga, Randall Kosaki, Brian Hauk. Distribution and abundance of the introduced snapper Lutjanus kasmira (Forsskål, 1775) on shallow and mesophotic reefs of the Northwestern Hawaiian Islands. BioInvasions Records. 2017; 6 (3):259-268.

Chicago/Turabian Style

Atsuko Fukunaga; Randall Kosaki; Brian Hauk. 2017. "Distribution and abundance of the introduced snapper Lutjanus kasmira (Forsskål, 1775) on shallow and mesophotic reefs of the Northwestern Hawaiian Islands." BioInvasions Records 6, no. 3: 259-268.

Research article
Published: 06 July 2016 in PLOS ONE
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Mesophotic coral ecosystems (MCEs) support diverse communities of marine organisms with changes in community structure occurring along a depth gradient. In recent years, MCEs have gained attention due to their depths that provide protection from natural and anthropogenic stressors and their relative stability over evolutionary time periods, yet ecological structures of fish assemblages in MCEs remain largely un-documented. Here, we investigated composition and trophic structure of reef fish assemblages in the Northwestern Hawaiian Islands (NWHI) along a depth gradient from 1 to 67 m. The structure of reef fish assemblages as a whole showed a clear gradient from shallow to mesophotic depths. Fish assemblages at mesophotic depths had higher total densities than those in shallower waters, and were characterized by relatively high densities of planktivores and invertivores and relatively low densities of herbivores. Fishes that typified assemblages at mesophotic depths included six species that are endemic to the Hawaiian Islands. The present study showed that mesophotic reefs in the NWHI support unique assemblages of fish that are characterized by high endemism and relatively high densities of planktivores. Our findings underscore the ecological importance of these undersurveyed ecosystems and warrant further studies of MCEs.

ACS Style

Atsuko Fukunaga; Randall K. Kosaki; Daniel Wagner; Corinne Kane. Structure of Mesophotic Reef Fish Assemblages in the Northwestern Hawaiian Islands. PLOS ONE 2016, 11, e0157861 .

AMA Style

Atsuko Fukunaga, Randall K. Kosaki, Daniel Wagner, Corinne Kane. Structure of Mesophotic Reef Fish Assemblages in the Northwestern Hawaiian Islands. PLOS ONE. 2016; 11 (7):e0157861.

Chicago/Turabian Style

Atsuko Fukunaga; Randall K. Kosaki; Daniel Wagner; Corinne Kane. 2016. "Structure of Mesophotic Reef Fish Assemblages in the Northwestern Hawaiian Islands." PLOS ONE 11, no. 7: e0157861.

Journal article
Published: 01 July 2014 in Journal of Experimental Marine Biology and Ecology
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ACS Style

Atsuko Fukunaga; Kimberly A. Peyton; Florence I.M. Thomas. Epifaunal community structure and ammonium uptake compared for the invasive algae, Gracilaria salicornia and Acanthophora specifera, and the native alga, Padina thivyi. Journal of Experimental Marine Biology and Ecology 2014, 456, 78 -86.

AMA Style

Atsuko Fukunaga, Kimberly A. Peyton, Florence I.M. Thomas. Epifaunal community structure and ammonium uptake compared for the invasive algae, Gracilaria salicornia and Acanthophora specifera, and the native alga, Padina thivyi. Journal of Experimental Marine Biology and Ecology. 2014; 456 ():78-86.

Chicago/Turabian Style

Atsuko Fukunaga; Kimberly A. Peyton; Florence I.M. Thomas. 2014. "Epifaunal community structure and ammonium uptake compared for the invasive algae, Gracilaria salicornia and Acanthophora specifera, and the native alga, Padina thivyi." Journal of Experimental Marine Biology and Ecology 456, no. : 78-86.

Erratum
Published: 31 March 2011 in Environmental Pollution
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ACS Style

Atsuko Fukunaga; Marti J. Anderson; Jenny G. Webster-Brown. Erratum to “Assessing the nature of the combined effects of copper and zinc on estuarine infaunal communities” [Environ. Pollut. 159 (2011) 116–124]. Environmental Pollution 2011, 159, 836 -836.

AMA Style

Atsuko Fukunaga, Marti J. Anderson, Jenny G. Webster-Brown. Erratum to “Assessing the nature of the combined effects of copper and zinc on estuarine infaunal communities” [Environ. Pollut. 159 (2011) 116–124]. Environmental Pollution. 2011; 159 (3):836-836.

Chicago/Turabian Style

Atsuko Fukunaga; Marti J. Anderson; Jenny G. Webster-Brown. 2011. "Erratum to “Assessing the nature of the combined effects of copper and zinc on estuarine infaunal communities” [Environ. Pollut. 159 (2011) 116–124]." Environmental Pollution 159, no. 3: 836-836.

Journal article
Published: 31 January 2011 in Environmental Pollution
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Elevated levels of copper and zinc in sediment have been shown to adversely affect estuarine infauna. We investigated the additivity of the combined effects of copper and zinc on infaunal recolonisation through a manipulative field experiment in Orewa estuary, New Zealand, using defaunated sediment discs treated with these metals. The nature of their combined effects varied among infaunal taxa and the particular variables being examined. Additive effects were detected for species richness, for the mean log abundances of the polychaetes Prionospio sp. and Scoloplos cylindrifer and for the multivariate response of the community as a whole. Antagonistic effects were detected for the mean log abundances of total infauna and the polychaete Heteromastus sp. Characterising the potentially interactive nature of the combined effects of multiple heavy metals is essential in order to build predictive models of future environmental impacts of metal accumulation in estuarine sediments.

ACS Style

Atsuko Fukunaga; Marti J. Anderson; Jenny G. Webster-Brown. Assessing the nature of the combined effects of copper and zinc on estuarine infaunal communities. Environmental Pollution 2011, 159, 116 -124.

AMA Style

Atsuko Fukunaga, Marti J. Anderson, Jenny G. Webster-Brown. Assessing the nature of the combined effects of copper and zinc on estuarine infaunal communities. Environmental Pollution. 2011; 159 (1):116-124.

Chicago/Turabian Style

Atsuko Fukunaga; Marti J. Anderson; Jenny G. Webster-Brown. 2011. "Assessing the nature of the combined effects of copper and zinc on estuarine infaunal communities." Environmental Pollution 159, no. 1: 116-124.

Journal article
Published: 01 January 2011 in Journal of Experimental Marine Biology and Ecology
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ACS Style

Atsuko Fukunaga; Marti J. Anderson. Bioaccumulation of copper, lead and zinc by the bivalves Macomona liliana and Austrovenus stutchburyi. Journal of Experimental Marine Biology and Ecology 2011, 396, 244 -252.

AMA Style

Atsuko Fukunaga, Marti J. Anderson. Bioaccumulation of copper, lead and zinc by the bivalves Macomona liliana and Austrovenus stutchburyi. Journal of Experimental Marine Biology and Ecology. 2011; 396 (2):244-252.

Chicago/Turabian Style

Atsuko Fukunaga; Marti J. Anderson. 2011. "Bioaccumulation of copper, lead and zinc by the bivalves Macomona liliana and Austrovenus stutchburyi." Journal of Experimental Marine Biology and Ecology 396, no. 2: 244-252.

Journal article
Published: 08 March 2010 in Marine Ecology Progress Series
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ACS Style

Atsuko Fukunaga; Mj Anderson; Jenny Webster-Brown; Rb Ford. Individual and combined effects of heavy metals on estuarine infaunal communities. Marine Ecology Progress Series 2010, 402, 123 -136.

AMA Style

Atsuko Fukunaga, Mj Anderson, Jenny Webster-Brown, Rb Ford. Individual and combined effects of heavy metals on estuarine infaunal communities. Marine Ecology Progress Series. 2010; 402 ():123-136.

Chicago/Turabian Style

Atsuko Fukunaga; Mj Anderson; Jenny Webster-Brown; Rb Ford. 2010. "Individual and combined effects of heavy metals on estuarine infaunal communities." Marine Ecology Progress Series 402, no. : 123-136.

Journal article
Published: 01 June 2008 in International Review of Hydrobiology
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ACS Style

Atsuko Fukunaga. Invertebrate Community Associated with the MacroalgaHalimeda kanaloana Meadow in Maui, Hawaii. International Review of Hydrobiology 2008, 93, 328 -341.

AMA Style

Atsuko Fukunaga. Invertebrate Community Associated with the MacroalgaHalimeda kanaloana Meadow in Maui, Hawaii. International Review of Hydrobiology. 2008; 93 (3):328-341.

Chicago/Turabian Style

Atsuko Fukunaga. 2008. "Invertebrate Community Associated with the MacroalgaHalimeda kanaloana Meadow in Maui, Hawaii." International Review of Hydrobiology 93, no. 3: 328-341.

Journal article
Published: 30 April 2008 in Marine Environmental Research
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Non-fishery use of artificial reefs has been given attention in recent years. The primary concern associated with non-fishery artificial reefs is their effects to the surrounding ecosystems. This study examined the infaunal communities around two non-fishery artificial reefs (the sunken vessels YO257 and Sea Tiger) in Mamala Bay, Hawaii. Infaunal community structures at these artificial reefs were relatively similar to one at a nearly natural patch reef. A large amount of basalt gravel around YO257 associated with its deployment operation possibly had an effect on the surrounding community by increasing pore space. Polychaete assemblages were compared with existing data throughout the bay, and this revealed that the variation in sediment grain sizes and depths seemed to play some role in structuring the polychaete communities. Nevertheless, the infaunal communities around the artificial reefs were typical and within the range of natural variation in Mamala Bay, supporting their beneficial uses in ecotourism.

ACS Style

Atsuko Fukunaga; Julie H. Bailey-Brock. Benthic infaunal communities around two artificial reefs in Mamala Bay, Oahu, Hawaii. Marine Environmental Research 2008, 65, 250 -263.

AMA Style

Atsuko Fukunaga, Julie H. Bailey-Brock. Benthic infaunal communities around two artificial reefs in Mamala Bay, Oahu, Hawaii. Marine Environmental Research. 2008; 65 (3):250-263.

Chicago/Turabian Style

Atsuko Fukunaga; Julie H. Bailey-Brock. 2008. "Benthic infaunal communities around two artificial reefs in Mamala Bay, Oahu, Hawaii." Marine Environmental Research 65, no. 3: 250-263.

Journal article
Published: 01 June 2007 in International Review of Hydrobiology
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Cryptic invertebrate communities in coral rubble and sand from Hanauma Bay, a Marine Life Conservation District, were analyzed. Substratum samples were collected from the shallow bench and sand channels next to the beach and the cryptofauna were examined. Sand from the shallows (0.6 m deep) is frequently trampled by beach users and has a depauperate community dominated by a polychaete (Saccocirrus alanhongi) and a variety of nematodes (mean no. taxa = 12, mean no. individuals = 1,143 (0.1 m–2), but sand collected 25 m seaward from below trampling depths (3 m). showed significantly greater diversity (mean no. taxa = 46, mean no. individuals = 6,448 (0.1 m–2). Coralline rubble from 0.5 m depth was acid dissolved to extract the cryptofauna that was trapped on 0.5 and 0.25 mm sieves. In total, 102 taxa and 10,673 individual invertebrates (0.1 m–2) were found. Rubble collected from areas used by waders had a greater diversity than sand habitats. This substratum provides a greater variety of microhabitats and protection from trampling for endolithic fauna than sand. Waders may actively avoid rubble because of the discomfort from walking on this hard, uneven substratum. We found that despite enforced protective measures, i.e., stopping fishing and collecting of marine life, banning fish feeding, and limiting the number of visitors, disturbance by human trampling on shallow sands still reduces the species richness in these areas. Cryptic biota below wading depths, and from adjacent coral rubble on sand, are not similarly affected. These results are similar to those from another heavily used beach on Oahu and cryptofauna ecology may be useful to adopt as a management option for Marine Preserves in other locations. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

ACS Style

Julie Bailey-Brock; Richard Brock; Alan Kam; Atsuko Fukunaga; Hanae Akiyama. Anthropogenic Disturbance on Shallow Cryptofaunal Communities in a Marine Life Conservation District on Oahu, Hawaii. International Review of Hydrobiology 2007, 92, 291 -300.

AMA Style

Julie Bailey-Brock, Richard Brock, Alan Kam, Atsuko Fukunaga, Hanae Akiyama. Anthropogenic Disturbance on Shallow Cryptofaunal Communities in a Marine Life Conservation District on Oahu, Hawaii. International Review of Hydrobiology. 2007; 92 (3):291-300.

Chicago/Turabian Style

Julie Bailey-Brock; Richard Brock; Alan Kam; Atsuko Fukunaga; Hanae Akiyama. 2007. "Anthropogenic Disturbance on Shallow Cryptofaunal Communities in a Marine Life Conservation District on Oahu, Hawaii." International Review of Hydrobiology 92, no. 3: 291-300.