Results 21 to 30 of about 1,483,240 (277)

Experimental study on the response relationship between environmental DNA concentration and biomass of Schizothorax prenanti in still water

open access: yesFrontiers in Ecology and Evolution, 2022
The superiority of the environmental DNA (eDNA) method for estimating the biomass of aquatic species has been demonstrated. However, the relationship between eDNA concentration and biomass is difficult to clarify under the influence of complex water flow
Jianmin Zhang   +3 more
doaj   +1 more source

Omnivory by planktivores stabilizes plankton dynamics, but may either promote or reduce algal biomass [PDF]

open access: yes, 2010
Classical models of phytoplankton–zooplankton interaction show that with nutrient enrichment such systems may abruptly shift from limit cycles to stable phytoplankton domination due to zooplankton predation by planktivorous fish.
Araujo, A.I.L.   +4 more
core   +1 more source

Distribution and stocks of mass bottom and demersal fishes by areas of the northwestern Japan Sea

open access: yesИзвестия ТИНРО, 2016
Features of seasonal distribution are considered for the most abundant fish species in the northwestern Japan Sea and their stocks are assessed on the data of the bottom trawl survey over the shelf and continental slope from Peter the Great Bay to the ...
Pavel V. Kalchugin   +2 more
doaj   +1 more source

Temporal Changes in Microbial Communities Beneath Fish Farm Sediments Are Related to Organic Enrichment and Fish Biomass Over a Production Cycle

open access: yesFrontiers in Marine Science, 2020
The marine fish farming industry is growing at a significant rate, yet a number of concerns still remain with regards to environmental impacts on the surrounding coastal sea and its biota.
Grazia Marina Quero   +4 more
doaj   +1 more source

Predicting food consumption and production in fish populations : allometric scaling and size-structured models [PDF]

open access: yes, 2010
Life-history traits in fish populations are highly correlated. A subset of these correlations are called allometric scaling, they refer to biological processes which can be described using body size as independent variable.
Wiff, Rodrigo
core   +1 more source

Spatial and Temporal Variations in Autumn Fish Assemblages in the Offshore Waters of the Yangtze Estuary

open access: yesDiversity, 2023
The offshore waters of the Yangtze Estuary are an important fish habitat, and the large gradient of environmental conditions leads to different fish assemblages.
Zhaomin Chen, Cui Liang, Weiwei Xian
doaj   +1 more source

A hierarchical model to estimate the abundance and biomass of salmonids by using removal sampling and biometric data from multiple locations [PDF]

open access: yes, 2010
We present a Bayesian hierarchical model to estimate the abundance and the biomass of brown trout (Salmo trutta fario) by using removal sampling and biometric data collected at several stream sections.
Christophe Laplanche   +3 more
core   +1 more source

LONG-TERM AVERAGE BIOMASS AND DOMINANT FISH SPECIES IN THE BOTTOM BIOTOPES OF THE OKHOTSK SEA. PART 2. COMPOSITION AND QUANTITATIVE RATIO OF SPECIES AT THE CONTINENTAL SLOPE IN DIFFERENT AREAS OF THE SEA

open access: yesИзвестия ТИНРО, 2018
Demersal fish biomass is quantitatively evaluated in the bottom biotopes at the depths to 2000 m at the continental slope of the Okhotsk Sea on the data of 2,545 trawl catches obtained in 1977–2010.
V. P. Shuntov, O. S. Temnykh
doaj   +1 more source

Supplements to the generalized quantitative assessments of benthic macrofauna in the Far Eastern Seas and adjacent waters of the Pacific Ocean. Report 1. Regional features of distribution for biomass of fish

open access: yesИзвестия ТИНРО, 2016
Long-term information on mean annual biomass of the main taxa of bottom and demersal fishes on the shelf and upper continental slope (down to 2025 m) in the Far Eastern Seas and adjacent Pacific waters is summarized.
Vyacheslav P. Shuntov, Igor V. Volvenko
doaj   +1 more source

Fishing destabilizes the biomass flow in the marine size spectrum [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2011
Fishing impacts on marine food webs are predicted by simulations of a size spectrum community model. In this model, predation is determined by predator and prey size and abundance, and drives predator growth and prey mortality. Fishing amplifies temporal oscillations in the biomass flow.
Rochet, Marie-joelle, Benoit, E.
openaire   +3 more sources

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