A5027882314- Fish Ecology and Management Studies
- Marine and fisheries research
- Marine Bivalve and Aquaculture Studies
- Genetic and phenotypic traits in livestock
- Marine animal studies overview
- Coral and Marine Ecosystems Studies
- Isotope Analysis in Ecology
- Aquatic Invertebrate Ecology and Behavior
- Wildlife Ecology and Conservation
- Identification and Quantification in Food
- Fish Biology and Ecology Studies
- Oil Spill Detection and Mitigation
- Hydrology and Watershed Management Studies
- Maritime Navigation and Safety
- Aquaculture Nutrition and Growth
- Turtle Biology and Conservation
- Species Distribution and Climate Change
- Avian ecology and behavior
- Ichthyology and Marine Biology
- International Maritime Law Issues
- Fish biology, ecology, and behavior
- Marine and Offshore Engineering Studies
- Law, logistics, and international trade
- Hydrology and Sediment Transport Processes
NOAA National Marine Fisheries Service Southeast Fisheries Science Center
2016-2023
NOAA National Marine Fisheries Service
2016-2023
National Oceanic and Atmospheric Administration
2017-2023
University of Florida
2011-2013
Abstract Endangered, wide‐ranging megafauna have many threats to contend with during their struggle for survival in an ever‐increasing human dominance of the environment. Reliable monitoring endangered large mammal populations is therefore a critical conservation requirement. Photographic capture–recapture ( CR ) techniques opened up avenues population individually recognizable species. The efficient application these techniques, however, can be constrained by challenges reliably identifying...
Abstract The Gulf Menhaden Brevoortia patronus is frequently cited as playing a predominant role in the trophic structure and function of northern Mexico (GOM) marine ecosystem, yet much work remains quantifying its ecological importance. We performed meta‐analysis diet studies to quantify within this ecosystem. Of 568 references consulted, 136 identified predator–prey interactions involving Menhaden, menhaden spp., or unidentified clupeid prey items. Overall, 79 species were reported...
We evaluated alternative catchability models for estimating the composition of fishes and decapods in two coastal rivers sampled via capture–recapture boat electrofishing, seine removal sampling, throw trap sampling. Information criteria were used to select between linear nonlinear assess heterogeneity coefficients across populations, sampling reaches, events. The selected electrofishing model assumed linearity catch per unit effort population density, with among taxa rivers. Linear samples,...
Globally, tunas are among the most valuable fish stocks, but also inherently difficult to monitor and assess. Samples of larvae Western Atlantic bluefin tuna Thunnus thynnus (Linnaeus, 1758) from standardized annual surveys in northern Gulf Mexico provide a potential source "offspring" for close-kin mark-recapture (CKMR) estimates abundance. However, spatial patchiness highly skewed numbers per tow suggest sampled may come small number parents, compromising precision CKMR. We used high...
The development of a reliable tagging program requires simulation testing the experimental design. However, potential for model misspecification, particularly in underlying spatiotemporal dynamics, is often ignored. A continuous time, spatially explicit, age-structured, capture–recapture operating was developed to better emulate real-world population dynamics typically overlooked aggregated or discrete time models. Various parametrizations, including case studies with Atlantic bluefin tuna...
Gulf menhaden ( Brevoortia patronus ) support the largest fishery by yield in of Mexico (GoM) and are a key forage species for many marine predators. While stock assessments indicated that overfishing was not likely to have occurred past, concerns been raised regarding possible effects fishing on their In this study, we used US Gulfwide Ecopath with Ecosim (EwE) model explore predicted increased harvest GoM ecosystem focused our analyses Key predators identified included king mackerel...
Abstract The article examines factors related to the decline and rebuilding of billfish stocks in Atlantic Indian oceans. Longline effort has declined over last 10–15 years both This fishing pressure led recovery some stocks, but species that are caught incidentally industrial longline fisheries remain overexploited. Using a simple moving average technique on mortality trajectories, we estimated threshold size 240 million hooks for Ocean 364 where start experiencing overfishing. In addition,...
Forecasts of the future abundance western Atlantic bluefin tuna (Thunnus thynnus) have, for nearly two decades, been based on competing views recruitment potential: (1) a "low" scenario hockey-stick (two-line) curve where expected level is set equal to geometric mean estimates years after supposed regime-shift in 1975, and (2) "high" Beverton-Holt fit time series spawner-recruit pairs beginning 1970. Several investigators inferred relative plausibility these scenarios measures their ability...
Abstract Throw traps are commonly used to assess small fish and macroinvertebrate (SFI) communities in aquatic habitats. Traditionally, numerous passes with a bar seine remove all SFIs from within the throw trap, providing density estimates that comparable across habitat types. However, similar information can be gathered fewer than traditionally used, thus allowing more sampling given field effort. The appropriate number of meet study objectives determined if habitat‐specific recovery...
Atlantic bluefin tuna (Thunnus thynnus) are a large, highly migratory fish distributed throughout the North Ocean and adjacent seas currently managed as two discrete stocks: western eastern. Both stocks forage in Atlantic, high degree of intermixing occurs, which combined with limited single-stock survey data makes it difficult to assess abundance status individual populations. In this study, we used movement patterns from multidecadal tagging dataset create monthly distribution maps for...
Abstract Age–length key (ALK) methods generally perform well when length samples and age are representative of the underlying population. It is unclear how these lengths but sparse (i.e. small or missing in many years, some groups do not have any observations). With western Atlantic bluefin tuna, available data been, for most part, collected opportunistically. We evaluated two capable accommodating data: a novel hybrid ALK (combining forward ALKs cohort slicing) combined forward-inverse ALK....
Quantifying ecosystem-level processes that drive community structure and function is key to the development of effective environmental restoration management programs. To assess effects large-scale aquatic vegetation loss on fish invertebrate communities in Florida estuaries, we quantified compared food webs two adjacent spring-fed rivers flow into Gulf Mexico. We constructed a web model using field-based estimates absolute biomass trophic interactions highly productive vegetated river,...
Abstract In aquatic systems, refuge habitats increase resistance to drying events and maintain populations in disturbed environments. However, reduced water availability altered flow regimes threaten the function of these habitats. We conducted a capture–mark–recapture study, integrating angler citizen science. Our objectives were quantify variation survival Florida Largemouth Bass Micropterus salmoides floridanus coastal habitat across seasonal hydrological periods over 4 years varying...
Glen Canyon Dam operations are known to affect mainstem Colorado River temperature and shoreline habitats for native fish. Options ameliorating the impacts that have on young fish include changing release volumes and/or daily range of releases. Long-term alterations may produce a measurable biological response can be costly, particularly if treatment involves reduced power generation. In September October 2005, series two-week releases occurred alternated between fluctuations varied by 76 m3...