Results 51 to 60 of about 1,344 (194)

Determination of Optimal Acoustic Passive Reflectors to Reduce Bycatch of Odontocetes in Gillnets

Frontiers in Marine Science, 2020
The need to minimize bycatch of toothed whales (odontocetes) in gillnets has long been recognized, because they are often top predators and thus essential to ecosystem resilience.
Isabella M. F. Kratzer, Isabella M. F. Kratzer, Ingo Schäfer, Arne Stoltenberg, Jérôme C. Chladek, Lotte Kindt-Larsen, Finn Larsen, Daniel Stepputtis   +7 more
doaj   +1 more source

Does nature shape risk preferences? Evidence from Chile, Norway, and Tanzania

Economic Inquiry, Volume 63, Issue 2, Page 568-590, April 2025.
Abstract Does exposure to a more risky environment affect risk preferences? Going beyond single‐case study evidence, we report results from five surveys conducted in three countries and link this with administrative data to study whether a link between exposure and preferences is detectable and widespread. We find no evidence for endogenous preferences
Florian Diekert, Robbert‐Jan Schaap
wiley   +1 more source

The Effects of Selective Harvest on Japanese Spanish Mackerel (Scomberomorus niphonius) Phenotypic Evolution

Frontiers in Ecology and Evolution, 2022
Japanese Spanish mackerel (Scomberomorus niphonius) is an important fish species in the China Seas with wide distribution, extensive migration, and high economic value.
Peng Sun, Peng Sun, Yangke Shang, Runlong Sun, Yongjun Tian, Yongjun Tian, Mikko Heino, Mikko Heino, Mikko Heino   +8 more
doaj   +1 more source

Selection due to nonretention mortality in gillnet fisheries for salmon [PDF]

Evolutionary Applications, 2010
AbstractFisheries often exert selective pressures through elevated mortality on a nonrandom component of exploited stocks. Selective removal of individuals will alter the composition of a given population, with potential consequences for its size structure, stability and evolution. Gillnets are known to harvest fish according to size.
Baker, Matthew R, Kendall, Neala W, Branch, Trevor A, Schindler, Daniel E, Quinn, Thomas P   +4 more
openaire   +2 more sources

Lack of Compliance in Gillnet Fisheries Regulations Increases Risk to a Vulnerable Species

Fisheries Management and Ecology, EarlyView.
ABSTRACT This article presents an analysis of regulatory compliance in a Brazilian gillnet fishery, based on Vessel Monitoring System (VMS) tracking data. Satellite transmissions records, interpreted as proxies for gillnet haulings events, were analyzed and classified using a neural network to assess the level of compliance of the gillnet fleet.
Rodrigo Claudino dos Santos, Eduardo R. Secchi, Joanna Turner, Luis Gustavo Cardoso   +3 more
wiley   +1 more source

ANALYSIS OF ECONOMIC MODEL OF TERASAK FISHERMAN’S HOUSEHOLD AT MADURA STRAIT

Russian Journal of Agricultural and Socio-Economic Sciences, 2021
In dry season, the income level of fishermen is very minimal and they often do not get any catches at all. In periods of low income, fishermen's wives and children usually have to fight hard to earn money by doing all the work that brings income.
Primyastanto M., Supriyadi S., Sari M., Intyas C.A., Abdillah K.I.   +4 more
doaj   +1 more source

Recovery of Four Commercial Fish Stocks in Lake IJsselmeer (The Netherlands) After Major Fishery Management Interventions

Fisheries Management and Ecology, EarlyView.
ABSTRACT Sustainable management of inland fisheries presents major challenges because it often involves complex and open access systems. Lake IJsselmeer is among the largest freshwater lakes in western Europe and supports active commercial fisheries.
Joey J. J. Volwater, Justin C. Tiano, Kelly Chin, Joep J. de Leeuw   +3 more
wiley   +1 more source

Monitoring-System Development for a Bottom-Set Gillnet through Time-Domain Dynamic Simulations

Applied Sciences, 2019
This paper investigates the sensor-based monitoring feasibility of a bottom-set gillnet through time-domain dynamic simulations for various current and wave conditions and failure scenarios.
Chungkuk Jin, HanSung Kim, Moo-Hyun Kim, Kiseon Kim   +3 more
doaj   +1 more source

Does Survey Angling CPUE Reflect Population Density of Northern Pike (Esox lucius) in Small Boreal Lakes?

Fisheries Management and Ecology, EarlyView.
ABSTRACT Knowing the relationship between catch per unit effort (CPUE) and population density is crucial for the management of recreational fisheries. We conducted standardized angling for pike in 16 lakes (3.4–22.1 ha) to test whether lure type, color, and pike density affect CPUE and the size of captured fish.
Aatu Turunen, Joni Tiainen, Mikko Olin, Anssi Vainikka   +3 more
wiley   +1 more source

Geolocation reveals wintering sites of near‐extinct Caucasian breeding sea duck

Ibis, EarlyView.
We obtained 14 sets of full annual cycle geolocator tracks from 13 individual nesting female Velvet Scoter Melanitta fusca from the relict Caucasian population at their last remaining breeding site, Lake Tabatskuri, Georgia. Results showed that females wintered at widespread discrete localities in Ukraine, around the coasts of the Crimean Peninsula and
Nika Paposhvili, Heidi Maria Thomsen, Ib Krag Petersen, Anthony D. Fox   +3 more
wiley   +1 more source