Results 91 to 100 of about 75,432 (273)

Local environment and sampling bias drive parasite prevalence estimates in freshwater fish communities

open access: yesOikos, EarlyView.
Parasite occurrence and infection estimates vary through time and space, making understanding the underlying drivers highly complex. Comparative studies based on empirical data must consider the factors of variation involved in estimating infection metrics in natural populations to make appropriate and reliable comparisons. Using a multi‐scale approach,
Juliane Vigneault   +2 more
wiley   +1 more source

Economic impact of resident and nonresident marine anglers to the local economy in Mecklenburg‐Western Pomerania, Germany

open access: yesFisheries Management and Ecology, EarlyView., 2023
Abstract Recreational fisheries catches are increasingly considered in the assessment and management of mixed recreational‐commercial marine fisheries, while the contribution of recreational fisheries to the economy is often overlooked. Using a telephone diary survey targeting marine recreational anglers in Germany, we estimated the number of anglers ...
Harry V. Strehlow   +6 more
wiley   +1 more source

Assessment of vital organ histopathology and plasma oxidative conditions of rainbow trout Oncorhynchus mykiss reared in earthen saltwater pond

open access: yesRUDN Journal of Agronomy and Animal Industries, 2019
The aim of this study was to compare gill, kidney, liver and gut histopathology, and plasma antioxidant markers of rainbow trout Oncorhynchus mykiss reared in saltwater earthen ponds in Gomishan, Iran.
Seyyed Morteza Hoseini   +2 more
doaj   +1 more source

Comparative Proteomics of Salinity Stress Responses in Fish and Aquatic Invertebrates

open access: yesPROTEOMICS, EarlyView.
ABSTRACT Fluctuating salinity is symptomatic of climate change challenging aquatic species. The melting of polar ice, rising sea levels, coastal surface and groundwater salinization, and increased evaporation in arid habitats alter salinity worldwide. Moreover, the frequency and intensity of extreme weather events such as rainstorms and floods increase,
Maxime Leprêtre   +3 more
wiley   +1 more source

On the Nonexistence of Nontrivial Involutive n-Homomorphisms of C*-algebras [PDF]

open access: yesarXiv, 2007
An n-homomorphism between algebras is a linear map $\phi : A \to B$ such that $\phi(a_1 ... a_n) = \phi(a_1)... \phi(a_n)$ for all elements $a_1, >..., a_n \in A.$ Every homomorphism is an n-homomorphism, for all n >= 2, but the converse is false, in general. Hejazian et al.
arxiv  

Quantifying Expected Ecological Response to Natural Resource Legislation: a Case Study of Riparian Buffers, Aquatic Habitat, and Trout Populations

open access: yesEcology and Society, 2006
Regulations governing the management of streamside vegetation (riparian buffers) lie at a nexus between environmental, social, and land development interests, and can yield especially contentious debates among stakeholders.
Krista L. Jones   +4 more
doaj   +1 more source

Combinatorial Dark Energy [PDF]

open access: yesarXiv, 2012
In this paper, we give a conceptual explanation of dark energy as a small negative residual scalar curvature present even in empty spacetime. This curvature ultimately results from postulating a discrete spacetime geometry, very closely related to that used in the dynamical triangulations approach to quantum gravity.
arxiv  

Effect of high-pressure pretreatment on enzymatic hydrolysis of a mixture of rainbow trout (Oncorhynchus mykiss) and Atlantic salmon (Salmo salar) rest raw material

open access: yesFrontiers in Sustainable Food Systems
IntroductionFish rest raw material generated from the fish processing industry may be a useful resource for recovery of added value compounds. The application of non-thermal novel technologies can improve the extraction.
Elissavet Kotsoni   +5 more
doaj   +1 more source

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