Jacob Asher
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View article: Widespread diversity deficits of coral reef sharks and rays
Widespread diversity deficits of coral reef sharks and rays Open
A global survey of coral reefs reveals that overfishing is driving resident shark species toward extinction, causing diversity deficits in reef elasmobranch (shark and ray) assemblages. Our species-level analysis revealed global declines o…
Assessing the vulnerability of marine life to climate change in the Pacific Islands region Open
Our changing climate poses growing challenges for effective management of marine life, ocean ecosystems, and human communities. Which species are most vulnerable to climate change, and where should management focus efforts to reduce these …
View article: A field and video annotation guide for baited remote underwater stereo‐video surveys of demersal fish assemblages
A field and video annotation guide for baited remote underwater stereo‐video surveys of demersal fish assemblages Open
Baited remote underwater stereo‐video systems (stereo‐BRUVs) are a popular tool to sample demersal fish assemblages and gather data on their relative abundance and body size structure in a robust, cost‐effective and non‐invasive manner. Gi…
View article: Fish biodiversity patterns of a mesophotic-to-subphotic artificial reef complex and comparisons with natural substrates
Fish biodiversity patterns of a mesophotic-to-subphotic artificial reef complex and comparisons with natural substrates Open
Artificial reefs act as high-rugosity habitats and are often deployed to enhance fishing; however, the effects of man-made features on fish communities can be unpredictable and are poorly understood in deeper waters. In this study, we used…
View article: A field and video annotation guide for baited remote underwater stereo-video surveys of demersal fish assemblages. [GOOS ENDORSED PRACTICE]
A field and video annotation guide for baited remote underwater stereo-video surveys of demersal fish assemblages. [GOOS ENDORSED PRACTICE] Open
1. Baited remote underwater stereo-video systems (stereo-BRUVs) are a popular tool to sample demersal fish assemblages and gather data on their relative abundance and body size structure in a robust, cost-effective and non-invasive manner.…
Shining a light on the composition and distribution patterns of mesophotic and subphotic fish communities in Hawai‘i Open
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.…
Is seeing believing? Diver and video-based censuses reveal inconsistencies in roving predator estimates between regions Open
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 630:115-136 (2019) - DOI: https://doi.org/10…
Pacific Reef Assessment and Monitoring Program. Data report : ecological monitoring 2017 : reef fishes and benthic habitats of the Northwestern Hawaiian Islands, Pacific Remote Islands Marine National Monument, and the Mariana Archipelago Open
"This report summarizes the reef fish survey data and a subset of the benthic data collected by the ESD for Pacific RAMP and for compatible PMNM, NMFS and CRCP survey missions in 2017. During 2017, surveys were conducted in the following r…
Pacific Reef Assessment and Monitoring Program. Fish monitoring brief : Jarvis Island time trends, 2008 - 2017 Open
"The NOAA Pacific Islands Fisheries Science Center conducts the long-term Pacific Reef Assessment and Monitoring Program (Pacific RAMP) to track the status and trends of coral reef ecosystems of the U.S. Pacific Islands. This summary brief…
Ecosystem Sciences Division Standard Operating Procedures: Data Collection for Towed-diver Benthic and Fish Surveys Open
Administration Report H ; 18-02
An Assessment of Mobile Predator Populations along Shallow and Mesophotic Depth Gradients in the Hawaiian Archipelago Open
Large-bodied coral reef roving predators (sharks, jacks, snappers) are largely considered to be depleted around human population centers. In the Hawaiian Archipelago, supporting evidence is primarily derived from underwater visual censuses…
Mesophotic Depth Gradients Impact Reef Fish Assemblage Composition and Functional Group Partitioning in the Main Hawaiian Islands Open
Mesophotic coral ecosystem (MCE) research has increased considerably in recent years, as MCEs may provide partial insulation from the effects of climate change, localized anthropogenic stressors, and may dampen fishing pressures for target…
Pacific Reef Assessment and Monitoring Program. Data report : ecological monitoring 2016 : reef fishes and benthic habitats of the main Hawaiian Islands, Northwestern Hawaiian Islands, Pacific Remote Island Areas, and American Samoa Open
"This report summarizes the reef fish survey data and a subset of the benthic data collected by the Coral Reef Ecosystem Program for Pacific RAMP and for compatible PMNM, NMFS and CRCP survey missions in 2016. During 2016, surveys were con…
Comparison of Reef Fish Survey Data Gathered by Open and Closed Circuit SCUBA Divers Reveals Differences in Areas With Higher Fishing Pressure Open
Visual survey by divers using open-circuit (OC) SCUBA is the most widely used approach to survey coral reef fishes. Therefore, it is important to quantify sources of bias in OC surveys, such as the possibility that avoidance of OC divers b…
Pacific Reef Assessment and Monitoring Program. Data report : ecological monitoring 2015 : reef fishes and benthic habitats of the main Hawaiian Islands, Northwestern Hawaiian Islands, Pacific Remote Island Areas, and American Samoa Open
"The Coral Reef Ecosystem Program (CREP) established a long-term monitoring program, known as the Pacific Reef Assessment and Monitoring Program (Pacific RAMP) in 2000. Pacific RAMP, which is supported by NOAA's Coral Reef Conservation Pro…
Pacific Reef Assessment and Monitoring Program. Data report : ecological monitoring 2014 : stationary point count surveys of reef fishes and benthic habitats of the Northwestern Hawaiian Islands, Mariana Islands, and Wake Atoll. Open
"This report summarizes a subset of the reef fish and benthic survey data collected by the Coral Reef Ecosystem Division for Pacific RAMP and for compatible PMNM, National Marine Fisheries Service (NMFS) and CRCP survey missions in 2014. O…