Fish−habitat associations in New Zealand: geographical contrasts

Cole, Russell; Davey, Niki; Carbines, Glen; Stewart, Rob

doi:10.3354/meps09566

Cited by 12 publications

(9 citation statements)

References 46 publications

(63 reference statements)

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“…As we did not account, however, for potential differences in detection probabilities, our estimates may be biased (MacKenzie et al ., ). For example, fish swimming underneath the kelp canopy may be less easily detected than fish on open reefs (Cole et al ., ). Alternatively, microhabitats and/or food availability may actually be greater in habitats devoid of large algae (Willis & Anderson, ; Pérez‐Matus et al ., ).…”

Section: Discussionmentioning

confidence: 97%

“…Increasing the complexity and heterogeneity of a habitat can promote diversity in demographic processes, richness, abundance and community structure (Willis & Anderson, 2003;P erez-Matus et al, 2007). A greater diversity of resources can facilitate abundances of fishes via sub-habitats for shelter, reproduction or food (Cole et al, 2012). Changes in the structure of fish assemblages between open and kelp-forested rocky reefs have previously been recorded (e.g.…”

Section: Effects Of Habitatmentioning

confidence: 99%

“…Holbrook et al, 1990). Inconsistencies may depend on spatial scale (Tuya et al, 2011), geographical location (Holbrook et al, 1990), or the particular species being investigated (Cole et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Longitudinal variation and effects of habitat on biodiversity of Australasian temperate reef fishes

Smith

Anderson

Gillanders

et al. 2014

Journal of Biogeography

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Aim Latitudinal gradients in marine biodiversity of fishes are well documented but comparatively little is known about longitudinal patterns. The objective of this study was to describe the distributional patterns in biodiversity and assemblage structure of temperate reef‐associated fishes in two habitats (kelp forests and open reefs) in each of four regions at comparable latitudes spanning a large longitudinal range (> 5000 km; 117.91° E–174.81° E). Location New Zealand, New South Wales, South Australia and Western Australia. Methods Total abundance, species richness, evenness, average taxonomic distinctness and variation in taxonomic distinctness were calculated from underwater visual counts of individual fish species and were analysed using ANOVA. Compositional change in fish communities was analysed using PERMANOVA and non‐metric multi‐dimensional scaling at the species level and at the family level. Results Patterns in univariate diversity measures did not show a clear longitudinal gradient and depended on the particular variable being considered. There was, however, a clear longitudinal gradient of turnover in species composition but this disappeared in family‐level analyses. The effects of habitat were also relatively stronger in family‐level analyses. Main conclusions We propose that ecological communities in similar habitats may be assembled according to a general ‘village hypothesis’, whereby an assemblage contains certain essential functional components. Regions having similar environmental characteristics are expected to have a full suite of these functional components. Thus, provided families reflect functional forms, this may explain the similarity among communities from vastly different regions when analysed at the family level. In contrast, the radiation of species within families may be regionally specific, depending on the history of oceanographic connectivity, microclimate and finer niche specialization, thus yielding strong regional differences in composition at this finer taxonomic level.

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Section: Discussionmentioning

confidence: 97%

Section: Effects Of Habitatmentioning

confidence: 99%

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Longitudinal variation and effects of habitat on biodiversity of Australasian temperate reef fishes

Smith

Anderson

Gillanders

et al. 2014

Journal of Biogeography

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“…Number of replicates (sites) in each area was 16 per year. Values are shown for goldsinny wrasse, cod, saithe, total number of fish, total number of crabs and total number of species per site the abundance of juvenile demersal fish (Siddon et al 2008), and both increase (Cole et al 2012) and decrease fish diversity (Edgar et al 2004) in relation to direct and indirect canopy effects and intraspecific and interspecific species interactions. Mixed responses in our study can also be related to the use of the kelp forest by different species.…”

Section: Discussionmentioning

confidence: 99%

Ecosystem-level effects of large-scale disturbance in kelp forests

Norderhaug

Filbee‐Dexter

Freitas

et al. 2020

Mar. Ecol. Prog. Ser.

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Understanding the effects of ecological disturbances in coastal habitats is crucial and timely as these are anticipated to increase in intensity and frequency in the future due to increasing human pressure. In this study we used directed kelp trawling as a scientific tool to quantify the impacts of broad-scale disturbance on community structure and function. We tested the ecosystem-wide effects of this disturbance in a BACI design using two 15 km2 areas. The disturbance had a substantial impact on the kelp forests in this study, removing 2986 tons of kelp and causing a 26% loss of total kelp canopy at trawled stations. This loss created a 67% reduction of epiphytes, an 89% reduction of invertebrates and altered the fish populations living within these habitats. The effect of habitat loss on fish was variable and depended on how the different species used the habitat structure. Our results show that large-scale experimental disturbances on habitat-forming species have ecological consequences that extend beyond the decline of the single species to affect multiple trophic levels of the broader ecosystem. Our findings have relevance for understanding how increasing anthropogenic disturbances, including kelp trawling and increased storm frequency caused by climate change, may alter ecosystem structure and function.

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“…It is most abundant off the South Island and Stewart Island, where it supports major commercial and recreational fisheries (Beentjes & Carbines 2005, Cole et al 2012. Blue cod are thought to be diandric protogynous hermaphrodites, where individuals initially mature as either male or female and some females change sex to male later in life (Carbines 2004).…”

Section: Introductionmentioning

confidence: 99%

Assessing maturity, fecundity and hermaphroditism in blue cod Parapercis colias

Brandt¹,

Dunn²,

Brouwer³

2017

Aquat. Biol.

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Macroscopic assessments of maturity from whole fish gonads are well established and routinely used in fisheries research and are important in the estimation of size-at-maturity and the impacts of size-selective fishing. Histological assessment of maturity is more accurate, but much slower, more expensive, and so less frequently conducted. We made a comparison between macroscopic and histological maturity classifications for a diandric protogynous hermaphrodite, blue cod Parapercis colias. The agreement between macroscopic and histological maturity classifications was low. Female and male L 50 (length at which 50% of the fish are mature) was estimated from histological data as 23 and 26 cm, respectively. Female spawning frequency was 4.6 d, and mean ± SD relative batch fecundity was 6.5 ± 3.3 hydrated oocytes per gram body weight. A single gonad with both testicular and ovarian tissue was found. Many blue cod were assigned incorrect maturity classifications. These results warrant a study of early gonadal development in blue cod to elucidate if and how sex change takes place. Difficulties in determination of sex and maturity may be most pronounced for species, like blue cod, that have complex maturation patterns. For blue cod, a review of the macroscopic maturity classification key and more thorough technician training are called for.

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Fish−habitat associations in New Zealand: geographical contrasts

Cited by 12 publications

References 46 publications

Longitudinal variation and effects of habitat on biodiversity of Australasian temperate reef fishes

Longitudinal variation and effects of habitat on biodiversity of Australasian temperate reef fishes

Ecosystem-level effects of large-scale disturbance in kelp forests

Assessing maturity, fecundity and hermaphroditism in blue cod Parapercis colias

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