cardiovascular
发表于 2025-3-25 04:19:22
Sebastian Pranz,Christian Sauera dominance of planktivorous fish. In order to improve lake water quality by means of biomanipulation, a total of 2.5 tons of bream (.)and roach (.)was removed during 1986 and the spring of 1987. The planktivorous/benthivorous fish biomass was thereby reduced by approximately 50%, from 30 to 15 g WW
强制令
发表于 2025-3-25 07:31:57
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Hyperplasia
发表于 2025-3-25 15:32:45
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Figate
发表于 2025-3-25 17:06:08
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abreast
发表于 2025-3-25 22:02:42
Are blue-green algae a suitable food for zooplankton? An overviewen widely investigated by many authors with contrasting and inconclusive results. Two main factors seem to play important role in determining their suitability as food: the biochemical properties of the different species, or even different strains of the same species; and the shape and size of the c
恶意
发表于 2025-3-26 02:11:51
Analysis of phytoplankton-zooplankton relationships in an oligotrophic lake under natural and maniputh rate increased with zooplankton concentration, causing a net increase in the phytoplankton growth, a stimulatory effect probably through nutrient regeneration that overrides the losses due to grazing.
biopsy
发表于 2025-3-26 06:32:30
Biomanipulation by introduction of herbivorous zooplankton. A helpful shock for eutrophic lakes?ividuals of . (0.6 ind. 1.) were introduced at the beginning of August. The daphnids soon increased 60-fold in their density causing a persistently high water transparency and low phytoplankton biomass up to November. Ammonia concentration rose steeply, whereas that of nitrate and oxygen decreased.
厚颜
发表于 2025-3-26 09:19:15
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Enteropathic
发表于 2025-3-26 14:18:34
Why do cladocerans fail to control algal blooms?xperimental data on four differently-sized . species are used in an attempt to (1) explain why cladocerans fail to control filamentous cyanobacteria when filament density is high, and (2) determine the critical filament density at which . becomes ineffective. At this critical concentration, . growth
boisterous
发表于 2025-3-26 19:27:53
Structural and grazing responses of zooplankton community to biomanipulation of some Dutch water bod (150 .m) and zooplankton indicated a Monod type relationship, with an initial part of the curve in which the zooplankton responds linearly to the seston increase up to about .. 2 mg C l., followed by a saturation of zooplankton mass (0.39 mg C l.) at 3–4 mg C l. seston, and an inhibitory effect on