Results 41 to 50 of about 754 (197)

Water depth and human disturbance drive occupancy of endangered softshell turtles (Nilssonia spp.) in eastern Nepal

Wildlife Biology, EarlyView.
Freshwater turtles play vital roles in maintaining the health of aquatic ecosystems by supporting ecological balance, nutrient cycling and regulating prey populations. Unfortunately, they are among the most threatened species worldwide. Habitat fragmentation, illegal trade, overharvesting for meat, and use in ethnomedicinal practices have severely ...
Asmit Subba, Kamala Limbu, Pooja Lama, Nishan Limbu, Dikshya Rai, Sony Lama, Laxman Khanal   +6 more
wiley   +1 more source

The Hydrological Cycle of the Lower Amazon in Brazil Determines the Variation in Local Fishing Patterns

Fishes, 2023
Fishery catches on the Lower Amazon River were analyzed in relation to the hydrological cycle, temporal shifts in fishing effort, and the use of nets or lines in lakes and rivers.
Maura da Silva Costa Furtado, Joaquim Carlos Barbosa Queiroz, Bianca Bentes, Edson Koiti Kudo Yasojima, Débora de Oliveira Thomaz, Larissa da Costa Pinheiro, Mauro Luis Ruffino, Victoria Isaac   +7 more
doaj   +1 more source

Biological invasions disrupt the relationship between size spectrum and trophic interactions in freshwater fish communities

Journal of Animal Ecology, EarlyView.
Our study shows that non‐native species alter the relationship between the size‐spectrum slope and the predator–prey mass ratio (PPMR) in freshwater fish communities by occupying distinct trophic niches. Abstract The size spectrum, which describes the relationship between abundance (or biomass) and body size, is an ataxic approach that can provide ...
Valentin Marin, Gaël Grenouillet, Ignasi Arranz, Julien Cucherousset   +3 more
wiley   +1 more source

Evidence of a potential sandbar shark (Carcharhinus plumbeus) nursery in the Western Gulf of Mexico

Frontiers in Marine Science
IntroductionNursery areas for sandbar sharks (Carcharhinus plumbeus) are well-delineated along the Atlantic coast of the United States, with only a single nursery area identified in the Gulf of Mexico on the west coast of Florida.MethodsFishery ...
Kesley Gibson-Banks, Paula Dominguez Rein-Loring, Jensen M. Smith, J. Marcus Drymon, R. J. David Wells, Fernando Martinez-Andrade, William B. Driggers, Matthew K. Streich   +7 more
doaj   +1 more source

Use of floated gillnet to reduce flatfish bycatch in a mixed-species gillnet fishery

Estuarine, Coastal and Shelf Science
Bycatch of threatened flatfish species is a major concern in mixed-species bottom-set gillnet fisheries in the Yellow Sea, China. Therefore, we tested floated gillnets against standard bottom-set gillnets to reduce bycatch by exploiting difference in species-specific fish behavior.
Mengjie Yu, Bent Herrmann, Kristine Cerbule, Changdong Liu, Liyou Zhang, Yanli Tang   +5 more
openaire   +2 more sources

Offshore wind farm avoidance by a discard‐feeding seabird is independent of local fishing activity

Journal of Animal Ecology, EarlyView.
Fishing is not allowed within wind farms; therefore, discard‐feeding seabirds may appear to avoid wind farm areas. We found that most Lesser Black‐backed Gulls avoided the wind farm area, but not each individual in each period. Avoidance of the wind farm was not driven by fishing exclusion within its perimeter.
Rosemarie Kentie, Rob S. A. van Bemmelen, Judy Shamoun‐Baranes, Eric W. M. Stienen, Ruben C. Fijn   +4 more
wiley   +1 more source

Marine mammal bycatch in gillnet and other entangling net fisheries, 1990 to 2011

Endangered Species Research, 2013
Since the 1970s the role of fishery bycatch as a factor reducing, or limiting the recovery of, marine mammal populations has been increasingly recognized.
RR Reeves, K McClellan, TB Werner
doaj   +1 more source

Density and temperature dependent growth of pikeperch (Sander lucioperca) in the Archipelago Sea

Aquatic Living Resources, 2020
In the Archipelago Sea, pikeperch (Sander lucioperca) is an important species in both commercial and recreational fisheries. Pikeperch is caught mainly with small mesh size gillnets, and annual fishing mortality is high.
Saulamo Kari, Heikinheimo Outi, Lappalainen Jyrki   +2 more
doaj   +1 more source

Sensory Biology of the Franciscana (Pontoporia blainvillei, Pontoporiidae, Cetartiodactyla): Ontogenetic Modifications of Vibrissae and Vibrissal Crypts

Integrative Zoology, EarlyView.
The transition of cetaceans from a terrestrial to an aquatic environment involved a crucial sensory adaptation to environments with limited visibility. Vibrissae, important mechanoreceptors, undergo an ontogenetic transformation in odontocetes. This research describes the histomorphology of vibrissae and crypts at different developmental stages ...
Cecilia Mariana Krmpotic, Cleopatra Mara Loza, Alejo Carlos Scarano, Pedro Fernando Andrés‐Laube, Francisco Acuña, Juan Pablo Loureiro, Carolina Natalia Zanuzzi, Nicolás Nahuel Castro, María Teresa Pombo, Lorenzo von Fersen, Claudio Gustavo Barbeito   +10 more
wiley   +1 more source

Mortality of Migratory Birds from Marine Commercial Fisheries and Offshore Oil and Gas Production in Canada

Avian Conservation and Ecology, 2013
There is an imminent need for conservation and best-practice management efforts in marine ecosystems where global-scale declines in the biodiversity and biomass of large vertebrate predators are increasing and marine communities are being altered.
Joanne I. Ellis, Sabina I. Wilhelm, April Hedd, Gail S. Fraser, Gregory J. Robertson, Jean-François Rail, Mark Fowler, Ken H. Morgan   +7 more
doaj   +1 more source