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You searched for: Journal name Limnologica Remove constraint Journal name: Limnologica Publication year rev 7989-2011 Remove constraint Publication year rev: 7989-2011 Source 2011 v.41 no.1 Remove constraint Source: 2011 v.41 no.1
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1. Bank filtration in the sandy littoral zone of Lake Tegel (Berlin): Structure and dynamics of the biological active filter zone and clogging processes

Author:
Anja Hoffmann; Günter Gunkel
Source:
Limnologica 2011 v.41 no.1 pp. 10-19
ISSN:
0075-9511
Subject:
biofilm; carbohydrates; carbon; chlorophyll; electron microscopy; filtration; fluorescence; hydraulic conductivity; infiltration rate; lakes; littoral zone; long term experiments; melamine; microalgae; nitrogen; organic matter; proteins; sediments; tracer techniques; water supply
Abstract:
... This study focused on clogging processes and on the benthic microalgal and meiofaunal assemblage in the sandy littoral zone of Lake Tegel, which are significantly involved in bank filtration, in a long-term. Our approach combined field studies and “in situ” experiments to highlight the structure of the biological active filter zone as well as the mechanisms and effects of clogging in the interstic ...
DOI:
10.1016/j.limno.2009.12.003

2. Climate warming and the onset of salinization: Rapid changes in the limnology of two northern plains lakes

Author:
Jeff Sereda; Matthew Bogard; Jeff Hudson; Devin Helps; Tarik Dessouki
Source:
Limnologica 2011 v.41 no.1 pp. 1-9
ISSN:
0075-9511
Subject:
biomass; chlorophyll; climate; food webs; freshwater; global warming; lakes; limnology; nutrients; phosphorus; primary productivity; salinity; snow; temperature; Saskatchewan
Abstract:
... Water resources of the interior plains region of North America may be adversely affected by climate warming. The climate records of the Battleford region (west central Saskatchewan) indicate that mean annual temperatures have risen by 0.71°C and mean annual minimum temperatures have risen by 1.03°C from 1894 to 2007. Snowfall has also increased but total precipitation has not. Concomitant with per ...
DOI:
10.1016/j.limno.2010.03.002

3. On the diet of Nile tilapia in two eutrophic tropical lakes containing toxin producing cyanobacteria

Author:
Ronald Semyalo; Thomas Rohrlack; Duncan Kayiira; Yusuf S. Kizito; Stephen Byarujali; George Nyakairu; Petter Larsson
Source:
Limnologica 2011 v.41 no.1 pp. 30-36
ISSN:
0075-9511
Subject:
Microcystis; Oreochromis niloticus; adults; diet; environmental factors; fish; insect larvae; insects; lakes; microcystins; phytoplankton; stomach; Lake Victoria
Abstract:
... Due to the production of toxins, cyanobacteria may adversely affect economically important fish such as Nile tilapia Oreochromis niloticus in tropical lakes. We studied the diet composition and factors affecting the diet of Nile tilapia in two tropical lakes where cyanotoxins were present. Particle-bound microcystins were present in all analysed water samples, ranging in concentration from 0.00012 ...
DOI:
10.1016/j.limno.2010.04.002

4. Phytoplankton dynamics and cyanobacterial dominance in Murchison Bay of Lake Victoria (Uganda) in relation to environmental conditions

Author:
Sigrid Haande; Thomas Rohrlack; Ronald P. Semyalo; Pål Brettum; Bente Edvardsen; Anne Lyche-Solheim; Kai Sørensen; Petter Larsson
Source:
Limnologica 2011 v.41 no.1 pp. 20-29
ISSN:
0075-9511
Subject:
Anabaena; Bacillariophyceae; Microcystis; environmental factors; nitrate nitrogen; phytoplankton; pollution; Lake Victoria; Uganda
Abstract:
... Murchison Bay is a shallow embayment in the north-western part of Lake Victoria, strongly influenced by urban pollution from the Ugandan capital Kampala. Two stations, representing the semi-enclosed innermost part of the bay and the wider outer part of the bay, were sampled in the period from April 2003 to March 2004, in order to assess the phytoplankton community and the nutrient status in the ba ...
DOI:
10.1016/j.limno.2010.04.001

5. Distribution of Macroinvertebrate assemblages along a saline wetland in harsh environmental conditions from Central-West Argentina

Author:
Erica E. Scheibler; Néstor F. Ciocco
Source:
Limnologica 2011 v.41 no.1 pp. 37-47
ISSN:
0075-9511
Subject:
climate; cluster analysis; community structure; environmental factors; hardness; insects; macroinvertebrates; physicochemical properties; wetlands; Argentina
Abstract:
... The goal was to examine how macroinvertebrate taxonomic richness and density respond to spatial-temporal changes and to the influence of water physicochemical characteristics along the Bañado Carilauquen (BC). Benthic samplings were conducted seasonally and environmental parameters were recorded in five reaches of the BC. Cluster analysis was applied to compare taxonomic richness among sites. Comm ...
DOI:
10.1016/j.limno.2010.03.001

6. Effects of nitrogen and phosphorus on phytoplankton composition and biomass in 15 subtropical, urban shallow lakes in Wuhan, China

Author:
Jin Lv; Hongjuan Wu; Mengqiu Chen
Source:
Limnologica 2011 v.41 no.1 pp. 48-56
ISSN:
0075-9511
Subject:
Cryptomonas; Cyclotella meneghiniana; Euglena; Microcystis aeruginosa; biochemical oxygen demand; biomass; chemical oxygen demand; chlorophyll; community structure; environmental factors; lakes; nitrogen; nitrogen content; nutrients; phosphorus; phytoplankton; regression analysis; summer; temperature; winter; China
Abstract:
... This study aims at investigating the composition and biomass of the phytoplankton community in 15 urban shallow eutrophic lakes as well as the effects of main environmental factors, including nutrient concentrations and the ratio of nitrogen to phosphorus, temperature, COD, BOD, water depth, etc. on the phytoplankton community structure. Lake water samples were taken and analyzed on a bimonthly ba ...
DOI:
10.1016/j.limno.2010.03.003

7. Growth, condition and energy stores of Arctic grayling fry inhabiting natural and artificial constructed Arctic tundra streams

Author:
Kimberlea L.F. Driedger; Lynn P. Weber; Ian K. Birtwell; David M. Janz
Source:
Limnologica 2011 v.41 no.1 pp. 63-69
ISSN:
0075-9511
Subject:
DNA; RNA; Thymallus arcticus; animal growth; body weight; condition factor; energy; fish; habitats; industrialization; juveniles; latitude; mining; morphometry; mortality; muscle protein; muscles; overwintering; rearing; spawning; streams; summer; triacylglycerols; tundra; viability; Arctic region; Northwest Territories
Abstract:
... Juvenile north-temperate and Arctic fishes are faced with trade-offs between energy allocation to growth and energy storage (primarily lipids) prior to over-wintering. We determined classical morphometric (fork length, body weight and condition factor) and biochemical (whole body triglycerides, muscle RNA/DNA ratio, muscle proteins) measures of growth and condition in individual young-of-the-year ...
DOI:
10.1016/j.limno.2010.07.003

8. Isolation, identification and characterization of phytoplankton-lytic bacterium CH-22 against Microcystis aeruginosa

Author:
Hong Zhang; Zengliang Yu; Qing Huang; Xiang Xiao; Xu Wang; Fayu Zhang; Xiangqin Wang; Yongding Liu; Chunxiang Hu
Source:
Limnologica 2011 v.41 no.1 pp. 70-77
ISSN:
0075-9511
Subject:
Microcystis aeruginosa; Pseudomonas putida; bacteria; chlorophyll; ecological balance; lakes; phycocyanin; phytoplankton; ribosomal DNA; secretion; China
Abstract:
... A bacterial strain named CH-22 showing phytoplankton-lytic activity against bloom-forming cyanobacterium Microcystis aeruginosa was isolated from Lake Chaohu of Anhui Province, China. The isolated strain was identified as Pseudomonas putida by morphology and homology research based on 16S rDNA. The phytoplankton-lytic activity was confirmed by reduction in cell number and chlorophyll a concentrati ...
DOI:
10.1016/j.limno.2010.08.001

9. Life history, seasonal variation and production of Andesiops torrens (Lugo-Ortiz and McCafferty) and Andesiops peruvianus (Ulmer) (Ephemeroptera: Baetidae) in a headwater Patagonian stream

Author:
Luis Beltrán Epele; María Laura Miserendino; Pablo Pessacq
Source:
Limnologica 2011 v.41 no.1 pp. 57-62
ISSN:
0075-9511
Subject:
Baetidae; autumn; biomass; climate change; cold; environmental indicators; larvae; seasonal variation; streams; summer; univoltine habit; winter; Argentina
Abstract:
... Life history descriptors of mayfly species are increasingly used in ecological assessment studies as indicator of environmental stress and also to evaluate the potential effects of climate change. We investigated the life history, annual production and competition of two congeneric mayflies: Andesiops torrens and Andesiops peruvianus in a Patagonian mountain headwater stream (La Hoya). From July 2 ...
DOI:
10.1016/j.limno.2010.07.002