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Figure 4 in Unraveling distributional patterns and life-history traits of a deep-water shrimp Plesionika edwardsii (Decapoda, Pandalidae) under unexploited virgin conditions: a benchmark for fisheries management

Figure 4. Seasonal predicted mean cephalothorax length (CL) by depth stratum for males, non-ovigerous and ovigerous females of Plesionika edwardsii in the Azorean region for the period 1999–2000. Light-colored symbols represent raw data. Detailed parameter estimates are in Tab. S4.

Figure 1 in Unraveling distributional patterns and life-history traits of a deep-water shrimp Plesionika edwardsii (Decapoda, Pandalidae) under unexploited virgin conditions: a benchmark for fisheries management

Figure 1. Sampling areas of Plesionika edwardsii in the mid-North Atlantic Ocean, Azorean region (ICES Subdivision 10a2) between 1999 and 2000. Orange dots represent each site sampled by a trap.

Figure 6 in Unraveling distributional patterns and life-history traits of a deep-water shrimp Plesionika edwardsii (Decapoda, Pandalidae) under unexploited virgin conditions: a benchmark for fisheries management

Figure 6. Sex ratio of Plesionika edwardsii by size class in the Azorean region during the period 1999–2000.

Figure 3 in Unraveling distributional patterns and life-history traits of a deep-water shrimp Plesionika edwardsii (Decapoda, Pandalidae) under unexploited virgin conditions: a benchmark for fisheries management

Figure 3. Size frequency distribution of males, non-ovigerous and ovigerous females Plesionika edwardsii in the Azorean region during the period 1999-2000.

opencc-by-4.0Nov 2023View details →

F I G U R E 1 in Echinorhinus brucus (Bonnaterre, 1788) in the Caribbean Sea: A recurrent visitor, or are the artisanal fisheries exploiting deeper waters?

F I G U R E 1 Confirmed georeferenced records (indicated by black dots) and fishing polygon boundaries (represented by dashed black lines) for the bramble shark Echinorhinus brucus (Bonnaterre, 1788) across the western Atlantic (a). A detailed view of the Caribbean Sea region is provided, highlighting the capture locations of bramble sharks, including our specimen (marked by a black star) (b). Key phenotypic diagnostic characteristics are depicted, showcasing the absence of an anal fin, two closely positioned unpinned dorsal fins near the caudal region, and a flat head and snout (c). An image of the specimen's open mouth, revealing its teeth (d). Additionally, a close-up photograph of an extracted tooth (e). Notations for countries: Colombia (Col), the Dominican Republic (D.R.), Mexico (Mex), Nicaragua (Nic), and Venezuela (Ven).

FIG. 6 in From folkloric belief to fishery bycatch: contrasting cryptozoological and euhemeristic interpretations of Australian sea serpents

FIG. 6. — String of A, fishing-net floats, which, if nonlethally entangled around an actively swimming animal and bobbing up and down on the water surface might be misinterpreted as the long tail of a presumed sea serpent, especially if the UMO was also pulling a "mane" of intertwined fishing-net and accumulations of seaweed or other natural or anthropogenic debris; B, cork pieces used to buoy a gillnet;C, wooden casks used to suspend a purse-seine. Photo credits: R. France (taken at Battle Harbour National Historic District, Battle Harbour, Newfoundland and Labrador [A]; Cape Ann Museum, Massachusetts [B]); nineteenth-century illustration reproduced from France 2019a [C].

FIG. 3 in From folkloric belief to fishery bycatch: contrasting cryptozoological and euhemeristic interpretations of Australian sea serpents

FIG. 3. — Illustrations of the many-humped, string-of-buoys Gloucester Sea Serpent observed by hundreds over a period of weeks in Massachusetts in the nineteenth century. Further details of these sightings as well as other illustrations are presented in France (2019a, b).

FIG. 2 in From folkloric belief to fishery bycatch: contrasting cryptozoological and euhemeristic interpretations of Australian sea serpents

FIG. 2. — Unidentified marine objects seen in waters around Australia in A, 1900 (anecdote 19, Wide World Magazine); B, 1913 (anecdote 28, Sunday Times); C, 1939 (anecdote 67, Cryptozoology); D, 1981 (Papua New Guinea waters; Smith 2020). Anecdote numbers correspond to those from Smith (2020). The illustration of the New Guinea UMO depicts the classic manyhumped, string-of-buoys "sea serpent" seen repeatedly around the world, which could, as has been suggested for other regions, be an actual string of entangled buoys from a fishing net. The 1913 Australian UMO was observed to sport a beard and dorsal crest, both traits which have been suggested to indicate presence of entangled fishing gear for other UMOs. Clearly the coils or loops elevated above the surface of the water that were observed for the 1900 and 1939 UMOs are biologically impossible and consequently represent a train of anthropogenic material.

FIG. 4 in From folkloric belief to fishery bycatch: contrasting cryptozoological and euhemeristic interpretations of Australian sea serpents

FIG. 4. — Pre-plastic maritime equipment forming the backbone of the long tails of putative sea serpents.A-F, early to mid twentieth-century fishing ropes and nets constructed of natural fibre (hemp); G, H, remarkably preserved hemp ropes retrieved from a 400 year-old sunken Basque whaling ship. Photo credits: R. France (taken at the Fisheries Museum of the Atlantic,Lunenburg, Nova Scotia [A, B]; the Maritime Museum of the Atlantic, Halifax, Nova Scotia [C, D]; Battle Harbour National Historic District, Battle Harbour, Newfoundland and Labrador [E, F] [see France 2019a for other, similar photos as well as nineteenth-century illustrations of the same]); Red Bay National Historic Site & UNESCO World Heritage Site, Red Bay, Newfoundland and Labrador (G, H).

FIG. 5 in From folkloric belief to fishery bycatch: contrasting cryptozoological and euhemeristic interpretations of Australian sea serpents

FIG. 5. — Pre-plastic maritime material forming the humps of the long tails of putative sea serpents. A, B, blown-glass balls used as floats from the nineteenth-century; C, D, nineteenth-century cork floats; E, F, wooden casks of the type often used as floats on fishing nets. Photos credits: R. France (taken at the Fisheries Museum of the Atlantic, Lunenburg, Nova Scotia [A, D]; the Battle Harbour National Historic District, Battle Harbour, Newfoundland and Labrador [E, F]); the Mystic Seaport Museum Archive and Collections, Mystic, Connecticut (B, C).

Size data for Chinook salmon caught in the Tengu Derby and Puget Sound commercial purse seine fisheries

The tengu_derby_size.csv file contains information on the following fields (columns): <ol> <li>year</li> <li>members (number of anglers who participated in the derby; not all anglers fished each day the derby was open)</li> <li>n_over_10 (total number of Chinok salmon greater than 10 pounds)</li> <li>n_over_5 (total number of Chinok salmon greater than 5 pounds)</li> <li>size_1 (mass in kg of the largest fish landed)</li> <li>size_2 (mass in kg of the second largest fish landed)</li> <li>size_3 (mass in kg of the third largest fish landed)</li> <li>size_4 (mass in kg of the fourth largest fish landed)</li> <li>size_5 (mass in kg of the fifth largest fish landed) </li> </ol> The wdfw_size.csv file contains the following fields (columns): <ol> <li>year</li> <li>mass (mean mass in kg of natural- and hatchery-origin Chinook salmon combined)</li> </ol>

FIG. 1 in From folkloric belief to fishery bycatch: contrasting cryptozoological and euhemeristic interpretations of Australian sea serpents

FIG. 1. — Unidentified marine objects (UMOs) representing the "many-humped" or "string-of-buoys" typology of "sea serpents" observed in A, Géographe Bay, Australia, in 1879; B, the Great Barrier Reef, Australia, in 1934. Further details of these sightings and illustrations of other UMOs from the nearby Western Pacific are presented in France (2020a).

opencc-by-4.0Apr 2022View details →

Abalone fisheries production 1984 2018 FAO Fishstat

Data describes quantity of abalone harvested from fisheries by country and year. The data covers the period 1984 to 2018.

FIGURE 5 in Impacts on fisheries assessed by local ecological knowledge in a reservoir cascade in the lower São Francisco River, northeastern Brazil

FIGURE 5 | Maximum Similitude Tree showing the expression and relationship of impacts over fisheries in the four areas sampled on the Sub-Middle and on Lower São Francisco, based on fishers' testimonies (n = 107).

FIGURE 4 in Impacts on fisheries assessed by local ecological knowledge in a reservoir cascade in the lower São Francisco River, northeastern Brazil

FIGURE 4 | Non-Metric Multidimensional Scaling (NMDS) analysis concerning impacts over the ichthyofauna in the four sampled areas on the Sub-Middle and Lower São Francisco.

FIGURE 3 in Impacts on fisheries assessed by local ecological knowledge in a reservoir cascade in the lower São Francisco River, northeastern Brazil

FIGURE 3 | List of main impacts mentioned in A. Area 1, B. Area 2, C. Area 3, and D. Area 4, according to fishers from the final portion of the Sub-Middle and Lower São Francisco. Dam: dams; Mac: macrophytes; Aqu: aquaculture; Pol: pollution; Ovf: overfishing; Abr: absence of rain; Def: deforestation; Sil: silting; Salt: salinity.

FIGURE 2 in Impacts on fisheries assessed by local ecological knowledge in a reservoir cascade in the lower São Francisco River, northeastern Brazil

FIGURE 2 | Frequency (A) and Word Cloud (B) analyses regarding the impacts over the ichthyofauna, according to fishers from the four sampled areas on the Sub-Middle and on Lower São Francisco. a. Dam; b. Macrophytes; c. Pollution; d. Overfishing; e. Absence of rain; f. Aquaculture; g. Deforestation; h. Silting; i. Water transfer; j. Non-native species; k. Irrigation; l. Pesticide; m. Salinization.

FIGURE 1 in Impacts on fisheries assessed by local ecological knowledge in a reservoir cascade in the lower São Francisco River, northeastern Brazil

FIGURE 1 | Fishers' communities on the four areas visited on the Sub-Middle and on Lower São Francisco, Northeastern Brazil. PE = Pernambuco State; BA = Bahia State; AL = Alagoas State; SE = Sergipe State.

opencc-zeroMay 2024View details →

dryad40/100

Data and code from: Recreational fisheries selectively capture and harvest large predators

Size and species selective harvest, inevitably alters the composition of targeted populations and communities. This can potentially harm fish stocks, ecosystem functionality, and related services, as evidenced in numerous commercial fisheries. The high popularity of rod-and-reel recreational fishing, practiced by hundreds of millions globally, raises concerns about similar deteriorating effects. Despite its prevalence, the species and size selectivity of recreational fisheries remain largely unquantified due to a lack of combined catch data and fisheries-independent surveys. This study addresses this gap by using standardised monitoring data and over 60,000 digital angling catch reports from 62 distinct fisheries. The findings demonstrate a pronounced selectivity in recreational fisheries, targeting top-predators and large individuals. Catch-and-release practices reduced the overall harvest by 60 % but did not substantially alter this selectivity. The strong species- and size-specific selectivity mirror patterns observed in other fisheries, emphasising the importance of managing the potential adverse effects of recreational fisheries selective mortality and overfishing.