Diel Variations in Survey Catch Rates and Survey Catchability of Spiny Dogfish and their Pelagic Prey in the Northeast U.S. Continental Shelf Large Marine Ecosystem
Diel Variations in Survey Catch Rates and Survey Catchability of Spiny Dogfish and their Pelagic Prey in the Northeast U.S. Continental Shelf Large Marine Ecosystem
Published Date:
2016
Source:
Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 8(1), 244–262
This study examines the potential uncertainty in survey biomass estimates of Spiny Dogfish Squalus acanthias in the Northeast U.S. Continental Shelf Large Marine Ecosystem (NES LME). Diel catch-per-unit-effort (CPUE) estimates are examined from the Northeast Fisheries Science Center bottom trawl surveys conducted during autumn (1963–2009) and spring (1968–2009). Influential environmental variables on survey catchability are identified for Spiny Dogfish life history stages and five pelagic prey species: Butterfish Peprilus triacanthus, Atlantic Herring Clupea harengus, shortfin squid Illex spp., longfin squid Doryteuthis spp., and Atlantic Mackerel Scomber scombrus. Daytime survey catchability was significantly higher than nighttime catchability for most species during autumn and for mature male Spiny Dogfish, shortfin squid, and longfin squid during spring in the NES LME. For most stages and species examined, breakpoint analyses identified significant increases in CPUE in the morning, peak CPUE during the day, and significant declines in CPUE in the late afternoon. Seasonal probabilities of daytime catch were largely driven by solar zenith angle for most species, with stronger trends identified during autumn. Unadjusted CPUE estimates appear to overestimate absolute abundance, with adjustments resulting in reductions in absolute abundance ranging from 41% for Spiny Dogfish to 91% for shortfin and longfin squids. These findings have important implications for Spiny Dogfish regarding estimates of population consumption of key pelagic prey species and their ecological footprint within the NES LME.
Food provisioning of wildlife is a major concern for management and conservation agencies worldwide because it encourages unnatural behaviours in wild animals and increases each individual's risk for injury and death. Here we investigate the contribu...
Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 8(1), 522–535
Description:
An understanding of temporal patterns of migration and spatial connectivity between home ranges and spawning sites is necessary for effective management of species that form transient spawning aggregations. The Nassau Grouper Epinephelus striatus is ...
Lomeli, Mark J. M.; Hamel, Owen S.; Wakefield, W. Waldo;
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2017
Source:
Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 9(1), 149–160
Description:
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2018
Source:
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Description:
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Murawski, Steven A.; Peebles, Ernst B.; Gracia, Adolfo;
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2018
Source:
Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 10(3), 325–346
Description:
We analyzed the results of the first comprehensive, systematic, fishery‐independent survey of Gulf of Mexico (GoM) continental shelves using data collected from demersal longline sampling off the United States, Mexico, and Cuba. In total, 166 speci...
Altenritter, Megan N.; Zydlewski, Gayle Barbin; Kinnison, Michael T.;
Published Date:
2017
Source:
Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 9(1), 216–230,
Description:
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2017
Source:
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Description:
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Published Date:
2016
Source:
Royal Society Open Science, 3(3), 1-9
Description:
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Published Date:
2017
Source:
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Description:
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Tellus B: Chemical and Physical Meteorology, 68(1), 1-10
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Harford, W. J.; Smith, S. G.; Ault, J. S.; Babcock, E. A.;
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2016
Source:
Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 8(1), 147–159
Description:
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Published Date:
2016
Source:
Royal Society Open Science, 3(3), 1-16
Description:
Accurate estimation of historical abundance provides an essential baseline for judging the recovery of the great whales. This is particularly challenging for whales hunted prior to twentieth century modern whaling, as population-level catch records a...
Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 8(1), 1–15
Description:
The spatial and temporal extent of summer hypoxia (dissolved oxygen [DO] concentration ≤ 2 mg/L) in Chesapeake Bay and its tributaries has been increasing for decades, consequently affecting fish distribution and abundance by shifting biomass to no...
Parsons, Kim M.; Everett, Meredith; Dahlheim, Marilyn;
Published Date:
2018
Source:
Royal Society Open Science, 5(8), 1-12
Description:
Determining management units for natural populations is critical for effective conservation and management. However, collecting the requisite tissue samples for population genetic analyses remains the primary limiting factor for a number of marine sp...
Arnold, Linsey M.; Smith, Wade D.; Spencer, Paul D.;
Published Date:
2018
Source:
Royal Society Open Science, 5(1), 1-11
Description:
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Description:
The Atlantic Sturgeon Acipenser oxyrinchus has declined throughout its range, and the species is now protected under the U.S. Endangered Species Act. Information on the timing and extent of spawning migrations is essential for the development and imp...
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Stier, A. C.; Samhouri, Jameal F.; Novak, M.; Marshall, Kristin N.; Ward, Eric John, 1977-; Holt, Robert D.; Levin, Phillip S.;
Published Date:
2016
Source:
Science Advances 2(5), 2016
Description:
Habitat loss, overexploitation, and numerous other stressors have caused global declines in apex predators. This “trophic downgrading” has generated widespread concern because of the fundamental role that apex predators can play in ecosystem func...
Papastamatiou, Yannis P.; Watanabe, Yuuki Y.; Demšar, Urška; Leos-Barajas, Vianey; Bradley, Darcy; Langrock, Roland; Weng, Kevin; Lowe, Christopher G.; Friedlander, Alan M.; Caselle, Jennifer E.;
Published Date:
2018
Source:
Mov Ecol. 2018; 6: 9.
Description:
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Resh, Carlee A.; Galaska, Matthew P.; Benesh, Kasey C.; Gardner, Jonathan P.A.; Wei, Kai-Jian; Yan, Ruo-Jin; Mahon, Andrew R.;
Published Date:
2021
Source:
Frontiers in Ecology and Evolution, 9, 1-11
Description:
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Rhoades, O. Kennedy; Lonhart, Steve I.; Stachowicz, John J.;
Published Date:
2019
Source:
Proc Biol Sci. 2019 Apr 10;286(1900):20182745.
Description:
Humans have restructured food webs and ecosystems by depleting biomass, reducing size structure and altering traits of consumers. However, few studies have examined the ecological impacts of human-induced trait changes across large spatial and tempor...
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