Results 21 to 30 of about 3,638 (297)
Ecological Indicators, 2023 Global freshwater biodiversity is declining at rates greater than in terrestrial or marine environments, largely due to habitat alteration and loss. Pacific salmon are declining throughout much of their southern range due to a combination of pressures in
Stephanie J. Peacock +5 more
doaj +1 more source
Spawner Quality Effects On Two Measures Of Reproductive Potential: Have We Been Counting Our Eggs Before They've Hatched? [PDF]
, 1999 No abstracts are to be cited without prior reference to the author.Recent studies have found positive associations between recruitment and ii;tdices of spawner quality (condition) for stocks exhibiting an indeterminate relationship between recruitment ...
C. Tara Marshall (14505297) +3 more
core +2 more sources
Frontiers in Marine Science, 2022 During the past century, bivalve populations across the globe have collapsed, resulting in negative ecosystem consequences due to their outsized impact on shallow estuaries. In response, there has been strong interest in the restoration of marine bivalve
Christopher J. Gobler +23 more
doaj +1 more source
Considering sampling bias in close‐kin mark–recapture abundance estimates of Atlantic salmon
Ecology and Evolution, 2021 Genetic methods for the estimation of population size can be powerful alternatives to conventional methods. Close‐kin mark–recapture (CKMR) is based on the principles of conventional mark–recapture, but instead of being physically marked, individuals are
Sebastian Wacker +6 more
doaj +1 more source
Age composition of Chukchi sockeye salmon Oncorhynchus nerka
Известия ТИНРО, 2014 Long-term data on age composition for Chukchi populations of sockeye salmon are presented. Spawners of 23 ages are recognized in the period 1970-2013 for 10 populations: 2+, 3+, 0.1+, 0.2+, 0.3+, 0.4+, 0.5+, 1.1+, 1.2+, 1.3+, 1.4+, 1.5+, 2.1+, 2.2+, 2.3+,
Elena V. Golub’
doaj +1 more source
Sexual selection in hermaphrodites, sperm and broadcast spawners, plants and fungi [PDF]
Philosophical Transactions of the Royal Society B: Biological Sciences, 2016 Darwin was the first to recognize that sexual selection is a strong evolutionary force. Exaggerated traits allow same-sex individuals to compete over access to mates and provide a mechanism by which mates are selected. It is relatively easy to appreciate how inter- and intrasexual selection work in organisms with the sensory capabilities to perceive ...
Madeleine Beekman +3 more
openaire +5 more sources
Integrated Environmental Assessment and Management, EarlyView., 2023 Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot (Lota lota) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference
Stephanie D. Graves +6 more
wiley +1 more source
Comment on "Fisheries Management" [PDF]
, 2012 The recent article by O’Leary et al. (2011) raises an important question about the relationship between science and those who manage fisheries. They contend that fishery managers do not give due cognisance to scientific advice and consistently set Total ...
Needle, Coby +2 more
core +4 more sources
Okanogan Basin Spring Spawner Report for 2007. [PDF]
, 2007 The Okanogan Basin Monitoring and Evaluation Program collected data related to spring spawning anadromous salmonid stocks across the entire Okanogan River basin. Data were collected using redd surveys, traps, underwater video, and PIT-tag technology then summarized and analyzed using simple estimate models.
Colville Tribes +1 more
openaire +2 more sources
Nitrogen, 2021 Two contrasting estuarine copepods, Acartia tonsa and Eurytemora carolleeae, the former a broadcast spawner and the latter a brood spawner, were fed a constant carbon-based diatom diet, but which had a variable N:P content, and the elemental composition (
Katherine M. Bentley +2 more
doaj +1 more source