Results 31 to 40 of about 21,592 (280)

Disentangling the Drivers of a Piscivorous Intra‐Annual Cohort and the Contributions of Three Cohorts to Early‐Year Class Strength in Pikeperch (Sander lucioperca)

Fisheries Management and Ecology, EarlyView.
ABSTRACT Using pikeperch (Sander lucioperca) as a model species, we investigated the factors influencing fluctuations in the abundance of piscivorous intra‐annual cohorts and assessed the role of three distinct cohorts: extremely small (ES), ordinary (or mid‐sized) fingerlings, and piscivorous in shaping year‐class strength.
Million Tesfaye, Tomáš Jůza, Marek Šmejkal, Katerina Soukalová, Daniel Bartoň, Petr Blabolil, Martin Čech, Josef Hejzlar, Marie Prchalová, Milan Muška, Michal Tušer, Luboš Kočvara, Zuzana Sajdlová, Vladislav Draštík, Carlos Martinez, Karlos Ribeiro de Moraes, Milan Říha, Mojmír Vašek, Radka Symonová, Marek Brabec, Jan Kubečka, Allan T. Souza   +21 more
wiley   +1 more source

Varying degradation of subfossil Daphnia longispina during the past 250 years and the discovery of fossil helmet-type head shields: preliminary results

Advances in Oceanography and Limnology, 2016
Zooplankton are regarded as a good indicator of environmental change, but comprehensive monitoring programs including  zooplankton are uncommon and only rarely extend over longer periods of time.
Jaakko Johannes Leppänen, Jan Weckström   +1 more
doaj   +1 more source

Mycosporine-Like Amino Acids (MAAs) in Zooplankton

Marine Drugs, 2020
Organisms have different adaptations to avoid damage from ultraviolet radiation and one such adaptation is the accumulation of mycosporine-like amino acids (MAAs).
Samuel Hylander
doaj   +1 more source

An annotated checklist of freshwater copepoda (crustacea, hexanauplia) from continental Ecuador and the Galapagos archipelago [PDF]

, 2019
An annotated checklist of the free-living freshwater Copepoda recorded in different regions in Ecuador (including the Amazon, the Andes, the coastal region, and the Galapagos Islands) is here provided.
Corgosinho P. H. C., De Oliveira Geraldes-Primeiro L. J., Dos Santos-Silva E. N., Holynska M., Lopez C., Marrone F., Perbiche-Neves G.   +6 more
core   +1 more source

Decadal Rapid Change in Energetic Carrying Capacity for Juvenile Chum Salmon in the Sanriku Coast

Fisheries Oceanography, EarlyView.
ABSTRACT Adult returns to coastal rivers in Sanriku, located near the southernmost area of chum salmon distribution, have declined since 2010. Climate‐induced fluctuations in juvenile prey availability may affect growth and survival, which are linked to adult returns.
Yuki Iino, Yuichi Shimizu, Tomoki Sato, Takashi Kitagawa   +3 more
wiley   +1 more source

Zooplankton-fish interactions in the littoral zone of Nyanza Gulf, Lake Victoria [PDF]

, 1999
Samples of zooplankton and fish were collected from six sampling points in Nyanza Gulf, Lake Victoria in Kenya from June to December 1998, using 76 mu m memo-filament mesh size strainer and an 80 mu m mesh size plankton net.
Owili, M.
core  

Food intake of early juvenile western Baltic cod (Gadus morhua) during settlement transition

Journal of Fish Biology, EarlyView.
Abstract This study examines the gut contents of 203 early juvenile Atlantic cod [17–101 mm ± 18.48 mm standard deviation (SD)] from the Western Baltic Sea (ICES Subdivision 22) collected between 2020 and 2022. According to the observed prey (proportion of pelagic, intermediate and benthic items) in the cod guts, settlement transition from a pelagic to
Anton Höper, Nicole Funk, Felix Mittermayer, Axel Temming, Steffen Funk   +4 more
wiley   +1 more source

Cladocera species composition in lakes in the area of the Hornsund Fjord (Southern Spitsbergen) – preliminary results

Knowledge and Management of Aquatic Ecosystems, 2011
Species composition of benthic and planktonic Cladocera was analysed in four lakes and ponds located in the southern part of the Spitsbergen Island near the Fjord Hornsund.
Zawisza E., Szeroczyńska K.
doaj   +1 more source

Effects of climate on size structure and functioning of aquatic food webs [PDF]

, 2010
In aquatic food webs, the role of body size is notoriously strong. It is also well known that temperature has an effect on body size. For instance, Bergmann’s rule states that body size increases from warm to cold climates.
Lacerot, G.
core  

The distribution of estuarine fish larvae: nutritional condition and co-occurrence with predators and prey [PDF]

, 2000
Fish larvae were collected monthly between March and September 1997 in the Mira and Guadiana estuaries (southern Portugal). Hydrological parameters were registered and zooplankton samples were obtained simultaneously. Densities of fish larvae (ind.100 m(-
Antunes, Baier, Bailey, Bain, Battini, Bergeron, Blaxter, Brodeur, Buckley, Bulow, Bulow, Buskey, Caldarone, Canino, Canino, Chícharo, Chícharo, Chícharo, Conover, Conway, Costa, Crecco, Crecco, Crecco, DeVries, Eduardo Esteves, Esteves, Ferreira, Fives, Fortier, Frank, Frank, Frank, Hjort, Hjort, Holmes, Houde, Houde, Hugie, Hunter, Hunter, Hunter, J.Pedro Andrade, Knox, Lasker, Laurence, M.Alexandra Chícharo, Martin, Matsakis, McGurk, Mclusky, Moller, Newell, Omori, Palmer, Palomera, Pepin, Pestana, Peterson, Purcell, Purcell, Robinson, Russell, Ré, Ré, Saville, Scheidegger, Schneider, Sinclair, Sinclair, Smith, Snedecor, SPSS, Stein, Suthers, Taggart, Teresa Pina, Thiel, Todd, Turner, van der Veer, Wyatt, Zar   +82 more
core   +2 more sources