Establishing species–habitat associations for 4 eteline snappers with the use of a baited stereo-video camera system

Misa, William F. X. E.; Drazen, Jeffrey C.; Kelley, Christopher; Moriwake, Virginia N.

doi:10.7755/fb.111.4.1

Cited by 33 publications

(37 citation statements)

References 14 publications

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“…Previous studies on habitat association of the Deep-7 bottomfish species in the MHI region also showed that depth and slope were important predictors of encounter probability (Misa et al 2013, Oyafuso et al 2017. For example, Oyafuso et al (2017) showed that apart from depth, ridge-like features, backscatter, and rugosity at a 5 or 60 m resolution explained most of the deviance in species-specific models.…”

Section: Importance Of Bathymetry Geomorphology and Spatial Resolutmentioning

confidence: 86%

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Shining a light on the composition and distribution patterns of mesophotic and subphotic fish communities in Hawai‘i

Weijerman¹,

Grüss²,

Dove³

et al. 2019

Mar. Ecol. Prog. Ser.

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As agencies shift from single-species management to ecosystem-based fisheries management, ecosystem models are gaining interest for understanding species dynamics in relation to oceanographic and ecological processes and human marine uses. However, information on community structure or distribution of many species that occupy deep (> 30 m) waters is largely unavailable. We amassed a total of 24 686 fish observations of 523 species/taxa for the 30−410 m depth areas surrounding the main Hawaiian Islands (MHI). We also obtained estimates of geomorphological variables, including substrate type, slope, rugosity, and ridge-like features. Using these 2 data sources, we (1) identified distinct fish communities along the 30−410 m depth gradient, and (2) generated relative biomass maps for fish functional groups. We showed that the mesophotic zone ranges between 30 and 129 m, with a fish faunal break at 60 m. Beyond this zone, 4 subphotic zones were identified: upper rariphotic (130−169 m), mid-rariphotic (170−239 m), lower rariphotic (240−319 m), and upper bathyal (320−410 m). We assigned fish species to functional groups partly based on identified depth ranges and fitted general additive models (GAMs) integrating geomorphological covariates to the functional group relative biomass estimates to determine the environmental variables that best predict the probability of encounter and relative biomass of each fish functional group. Finally, GAM predictions were employed to map functional group relative biomass distributions. These distribution maps showed a high relative biomass of many groups in the center of the MHI chain. This study contributes to a better understanding of fish community structure around the MHI and will inform ecosystem model parameterization.

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Section: Importance Of Bathymetry Geomorphology and Spatial Resolutmentioning

confidence: 86%

“…For example, Maui Nui and the deep channel between Maui and Hawai'i, the 'Au'au Channel, are known hotspots for the deepwater coral species Leptoseris spp. (Kahng & Kelley 2007 and Penguin Bank for various species of deepwater snappers (Misa et al 2013).…”

Section: Penguin Bank and Maui Nui Are Hotspots Of Fish Biomassmentioning

confidence: 99%

Shining a light on the composition and distribution patterns of mesophotic and subphotic fish communities in Hawai‘i

Weijerman¹,

Grüss²,

Dove³

et al. 2019

Mar. Ecol. Prog. Ser.

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“…In particular, the appearance of larger groupers and snappers during the 2016 El Niño year produced a distinct catch composition. Grouper and snapper species can exhibit size-depth distribution (Aburto-Oropeza et al, 2009;Misa et al, 2013;Lindfield, McIlwain & Harvey, 2014), suggesting fishers may have been catching larger fish because these were moving to shallower waters where production can be higher than in deeper waters in the Galapagos even during El Nino events (Wolff, Ruiz & Taylor, 2012). However, very little evidence of such size-depth partitioning has been reported in Galapagos for adult Groupers such as M. olfax (Coello & Grimm, 1993;Nicolaides et al, 2002), or snappers such as L. argentiventris (Aguaiza, 2015;Fierro Arcos, 2017).…”

Section: Discussionmentioning

confidence: 99%

Effects of the 2016 El Niño on the Galapagos artisanal coastal fin-fish fishery

Jarrín

Salinas‐de‐León

2018

Preprint

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El Niño events heavily influence physical characteristics in the Tropical Eastern Pacific and lead to a decrease in nutrient and phytoplankton concentrations and to variation in the composition of the marine trophic chain. However, El Niño events can also provide an opportunity to evaluate the possible effects climate change may have on marine ecosystems. The Galapagos Marine Reserve coastal fin-fish fishery supports approximately 400 fishers that target species that include benthic/demersal predatory fish such as the endemic Galapagos whitespotted sandbass (Paralabrax albomaculatus), the regional endemic sailfin grouper (Mycteroperca olfax) and mottled scorpion fish (Pontinus clemensi), and the misty grouper (Hyporthodon mystacinus). The first two species are listed as vulnerable and endangered, respectively, on the IUCN red list of threatened species. Despite their potential effects on the biota, at present it is unclear how El Niño events influence artisanal fin-fish fisheries in the Galapagos. To study the impacts of El Niño events on the fishery, numerical percentage catch composition at the largest dock in Santa Cruz Island was recorded during March and April 2013, 2014 and 2016 and compared. Compositions were significantly different between 2016 and both 2013 and 2014, but not between 2013 and 2014. These differences appear to have been due to the appearance of uncommon demersal/benthic predatory fish such as Grape eye seabass (Hemilutjanus macrophthalmos) and Pacific dog snapper (Lutjanus novemfasciatus). Size frequency distributions also varied, with significantly larger sizes of several species observed in 2016 when compared to 2013 or 2014. These changes in catch composition and size may be a product of a reduction in nutrient concentration and primary production that led to an increase in water clarity and decrease in prey biomass that forced these benthic fish species to change their feeding behavior and strike at baits that usually would not be easily detected. Because of the conservative life history many of these benthic predatory fish exhibit and the absence of any form of management for fish species in the GMR, El Niño events may have profound effects on their populations due to the elimination of the largest individuals. Management actions, such as size and catch limits and closures, directed at reducing the impact of the fishery on these important fish populations in the near- (El Niños) and long-term (climate change) future should be encouraged.

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“…Theoretical and modelled applications in this field seem to be well established (e.g. Johnson 1980, Aarts et al 2008, 2013, but both field and laboratory Laurel et al 2007, Misa et al 2013). This interchangeable use of terms may arise from the overlapping definitions of association, selection and preference (e.g.…”

Section: Concepts and Definitionsmentioning

confidence: 99%

“…This has typically been measured by comparing relative abundances or densities of individuals in, on, or over different substratum types (e.g. Nickell & Sayer 1998, Misa et al 2013. Here, substratum association refers to all the substrata that the fish occupies during a particular stage in its life cycle without any consideration as to whether an active choice was made to reside in the given substrata.…”

Section: Krausman 1999 and Morris 2003) To Support Implementation Ofmentioning

confidence: 99%

Disentangling Habitat Concepts for Demersal Marine Fish Management

Elliott¹,

Milligan²,

Heath³

et al. 2016

Oceanography and Marine Biology - An Annual Review

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Fishing and other anthropogenic impacts have led to declines in many fish stocks and modification of the seabed. As a result, efforts to restore marine ecosystems have become increasingly focused on spatially explicit management methods to protect fish and the habitats they require for survival. This has led to a proliferation of investigations trying anthropogenic impacts and identify fish resource requirements in order to meet conservation and management needs.A wide range of habitat-related concepts, with different uses and understandings has arisen as a consequence. Inconsistencies in terminology can cause confusion between studies, making it difficult to investigate and understand the ecology of fish and the factors that affect their survival. Ultimately, the inability to discern the relationships between fish and their environment clearly can hinder conservation and management measures for fish populations.This review identifies and addresses the present ambiguity surrounding -related concepts currently used in spatial management of demersal marine fish populations. The role of spatial and temporal scales is considered, in addition to examples of how to assess fish habitat for conservation and management purposes.

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Establishing species–habitat associations for 4 eteline snappers with the use of a baited stereo-video camera system

Cited by 33 publications

References 14 publications

Shining a light on the composition and distribution patterns of mesophotic and subphotic fish communities in Hawai‘i

Shining a light on the composition and distribution patterns of mesophotic and subphotic fish communities in Hawai‘i

Effects of the 2016 El Niño on the Galapagos artisanal coastal fin-fish fishery

Disentangling Habitat Concepts for Demersal Marine Fish Management

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