A5080202102- Marine and fisheries research
- Fish Ecology and Management Studies
- Marine animal studies overview
- Coral and Marine Ecosystems Studies
- Marine Bivalve and Aquaculture Studies
- Isotope Analysis in Ecology
- Species Distribution and Climate Change
- Identification and Quantification in Food
- scientometrics and bibliometrics research
- Wildlife Ecology and Conservation
- Economic and Environmental Valuation
- Animal Vocal Communication and Behavior
- Climate Change Policy and Economics
- Cephalopods and Marine Biology
- Ichthyology and Marine Biology
- Coastal wetland ecosystem dynamics
- Marine Sponges and Natural Products
- Genetic and phenotypic traits in livestock
- Arctic and Antarctic ice dynamics
- Fish Biology and Ecology Studies
- Mercury impact and mitigation studies
- Optical Coherence Tomography Applications
- Animal Behavior and Reproduction
- Crustacean biology and ecology
- Avian ecology and behavior
NOAA National Marine Fisheries Service Alaska Fisheries Science Center
2021-2024
NOAA National Marine Fisheries Service
2021-2024
National Oceanic and Atmospheric Administration
2021-2023
University of California, Santa Barbara
2020-2022
University of Washington
2015-2021
Northwestern University
2010-2016
Aquatic Systems (United States)
2015
University of Hawaiʻi at Mānoa
2013-2015
Field Museum of Natural History
2013
Significance Forage fish provide substantial benefits to both humans and ocean food webs, but these may be in conflict unless there are effective policies governing human activities, such as fishing. Collapses of forage induce widespread ecological effects on dependent predators, attributing collapses fishing has been difficult because natural fluctuations stocks. We implicate stock by showing that high rates maintained when productivity is rapid decline. As a consequence, the magnitude...
Calcium carbonate skeletons of scleractinian corals amplify light availability to their algal symbionts by diffuse scattering, optimizing photosynthetic energy acquisition. However, the mechanism scattering and its role in coral evolution dissolution symbioses during "bleaching" events are largely unknown. Here we show that differences skeletal fractal architecture at nano/micro-lengthscales within 96 taxa result an 8-fold variation light-scattering considerably alter environment. We...
Motivated by the need to estimate abundance of marine mammal populations inform conservation assessments, especially relating fishery bycatch, this paper provides background on estimation and reviews various methods available for pinnipeds, cetaceans sirenians. We first give an “entry-level” introduction estimation, including fundamental concepts importance recognizing sources bias obtaining a measure precision. Each primary mammals is then described, data collection analysis, common...
Species distribution models (SDMs) are widely used to relate species occurrence and density local environmental conditions, often include a spatially correlated variable account for spatial patterns in residuals. Ecologists have extended SDMs varying coefficients (SVCs), where the response given covariate varies smoothly over space time. However, SVCs see relatively little use perhaps because they remain less known relative other SDM techniques. We therefore review ecological contexts can...
As coral bleaching events become more frequent and intense, our ability to predict mitigate future depends upon capacity interpret patterns within previous episodes. Responses thermal stress vary among species; however the diversity of assemblages, environmental conditions, assessment protocols, severity criteria applied in global effort document creates challenges for development a systemic metric taxon-specific response. Here, we describe validate novel framework standardize response...
Fisheries bycatch is the greatest current source of human-caused deaths marine mammals worldwide, with severe impacts on health and viability many populations. Recent regulations enacted in United States under Fish Product Import Provisions its Marine Mammal Protection Act require nations fisheries exporting fish products to (hereafter, “export fisheries”) have or establish mammal protection standards that are comparable effectiveness for commercial fisheries. In cases, this will estimating...
Abstract Management strategy evaluation (MSE) is the state‐of‐the‐art approach for testing and comparing management strategies in a way that accounts multiple sources of uncertainty (e.g. monitoring, estimation, implementation). can help identify are robust to about life history target species its relationship other food web. Small pelagic fish anchovy, herring sardine) fulfil an important ecological role marine webs present challenges use MSE simulation‐based approaches. This due...
Abstract Ecosystem‐based fishery management requires considering the effects of actions on social, natural and economic systems. These considerations are important for forage fish fisheries, because these species provide ecosystem services as a key prey in food webs support valuable commercial fisheries. Forage stocks fluctuate naturally, fishing may make fluctuations more pronounced, yet harvest strategies intended to ameliorate might adversely affect fisheries communities. Here, we...
Bycatch in marine fisheries is the leading source of human-caused mortality for mammals, has contributed to substantial declines many mammal populations and species, extinction at least one. Schemes evaluating bycatch largely rely on estimates abundance bycatch, which are needed calculating biological reference points determining conservation status. However, obtaining these resource intensive takes careful long-term planning. The need assessments expected increase worldwide due recently...
Abstract Consumers and regulators influence conservation of marine finfish by controlling harvest demand availability. Consumer power to choose sustainably‐harvested species is threatened seafood mislabeling, which may be a product fraud or human error. Here we examined the prevalence its financial ecological implications, compiling analyzing an international dataset DNA barcoding studies ( n = 43). On average, DNA‐identified sold were less expensive (−2.98% ex‐vessel price) more sustainable...
Abstract We explore a “Go With the Older Fish” (GWOF) mechanism of learned migration behaviour for exploited fish populations, where recruits learn viable path by randomly joining school older fish. develop non-age-structured biomass model spatially independent spawning sites with local density dependence, based on Pacific herring (Clupea pallasii). compare diffusion (DIFF) strategy, adopt near their natal site without regard to fish, GWOF, same sites, but in proportion abundance adults...
Abstract The potential biological removal (PBR) formula used to determine a reference point for human-caused mortality of marine mammals in the United States has been shown be robust several sources uncertainty. This study investigates consequences quality monitoring on PBR performance. It also explores stochastic and demographic uncertainty, catastrophic events, sublethal effects interactions with fishing gear, situation mammal population subject bycatch two fisheries, only one which is...
Asynchronous fluctuations in abundance between species with similar ecological roles can stabilize food webs and support coexistence. Sardine (Sardinops spp.) anchovy (Engraulis have long been used as an example of this pattern because low-frequency variation catches these appears to occur out phase, suggesting that fisheries generalist predators could be buffered against shifts productivity a single species. Using landings data biomass recruitment estimates from five regions, we find do not...
Abstract Determining acceptable rates of human‐caused mortality in low‐data situations is a concern for many taxa world‐wide. An established approach determining levels marine mammals and other species conservation the Potential Biological Removal (PBR) framework, but PBR requires near‐unbiased estimates absolute abundance, constraining its use systems with limited data. We develop three alternative methods identifying long‐lived, slowly reproducing species, using indices relative abundance...
Disturbance from underwater noise is one of the primary threats to critically endangered southern resident killer whales (SRKWs). Previous studies have demonstrated that SRKWs spend less time feeding when vessels are present. In 2018, we measured effects a voluntary vessel slowdown action in SRKW critical habitat assess whether ship speed (and related source level) affects foraging behaviour. Observations and ships were collected land-based sites on San Juan Island, WA, USA, overlooking Haro...
Fisheries for forage fish may affect the survival and reproduction of piscivorous predators, especially seabirds. However, seabirds have evolved life history strategies to cope with natural fluctuations in prey it is difficult separate effects fishing on from impacts variability. To date, potential fisheries mainly been explored using ecosystem models that simplify seabird-forage-fish dynamics. We sought explore how different harvest policies seabirds, accounting structured population...
The effects of human-caused mortality, such as fisheries bycatch, endangered, threatened and protected (ETP) species marine mammals can be evaluated using population model-based stock assessments. information available to conduct assessments is often very limited. Available data might include fragmented time-series abundance estimates, incomplete on bycatch for the that interact with ETP (often few years low observer coverage), perhaps some scale trends in fishing effort. Such are...
Abstract Species distribution models (SDMs) are an important tool for conservation and resource management. However, managers often interested in derived quantities such as range or area occupied, how these calculated can have a large impact. Ecosystem‐based management typically requires spatial information about species distributions, which is increasingly generated from SDMs that then processed to identify occupied habitat. Many types of exist, but there little research regarding this...
A management strategy evaluation (MSE) is used to estimate success at achieving conservation goals for marine mammals while also aiming minimize impacts on commercial fisheries. It intended improve understanding of US import rules that require countries exporting fish and products the USA adhere mammal bycatch standards “comparable” those by USA. The MSE framework applied, illustrative purposes, export fisheries in Iceland impact harbor porpoises (Phocoena phocoena), seals (Phoca vitulina),...