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Phytoplankton and the physicochemical background in an assessment of the ecological and trophic conditions in vendace-type lakes

100%

Napiorkowska-Krzebietke A., Stawecki K., Pyka J. P., Zdanowski B., Zebek E.

Journal of Elementology

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2016

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tom 21

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nr 1

This study focused on the phytoplankton and environment relationships as well as on the ecological and trophic conditions of lakes inhabited by coregonid fish. Studies were carried out in deep and stratified vendace-type lakes called Lake Pluszne and Lake Łańskie (the Olsztyn Lake District, north-eastern Poland) in 2007-2008. Ecological and trophic conditions were determined on the basis of the phytoplankton multi-metric PMPL and Trophic State Index. Both lakes were characterized by a similar thermal and mictic regime, with the occurrence of hypolimnetic oxygen deficits. They were classified as hydrocarbonate-calcium type and medium-sized eutrophicated water bodies. According to the integrated trophy assessment, proposed in this research, the final Trophic State Index TSIAV indicated meso-eutrophy of both lakes, although the phytoplankton-based PMPL indicated that the ecological potential in Lake Łańskie was good and less than good - due to large cyanobacteria biomasses - in Lake Pluszne. The actual loads of phosphorus and nitrogen significantly exceeded permissible levels, especially in Lake Łańskie (5-fold at the most of the P content), at similar morphometric and sedimentation conditions in both lakes. However, more intensive water-exchange rate and more favorable conditions for phosphorus runoff in Lake Łańskie could limit the phytoplankton growth, especially cyanobacteria. Summing up, better oxygen conditions and less abundant phytoplankton suggested that Lake Łańskie had more suitable conditions for coregonids during the surveyed period than Lake Pluszne, where the vendace biomass has recently decreased drastically.

2

The structure of psammic rotifer communities in two boreal lakes with different trophic conditions: Lake Vortsjarv and Lake Saadjarv (Estonia)

100%

Lokko K., Virro T.

Oceanological and Hydrobiological Studies

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2014

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tom 43

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nr 1

3

Foraminiferal assemblages as palaeoenvironmental bioindicators in Late Jurassic epicontinental platforms: Relation with trophic conditions

100%

Reolid M., Nagy J., Rodriguez-Tovar F. J., Oloriz F.

Acta Palaeontologica Polonica

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2008

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tom 53

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nr 4

Foraminiferal assemblages from the neritic environment reveal the palaeoecological impact of nutrient types in relation to shore distance and sedimentary setting. Comparatively proximal siliciclastic settings from the Boreal Domain (Brora section, Eastern Scotland) were dominated by inner−shelf primary production in the water column or in sea bottom, while in relatively seawards mixed carbonate−siliciclastic settings from the Western Tethys (Prebetic, Southern Spain), nutrients mainly derived from the inner−shelf source. In both settings, benthic foraminiferal assemblages increased in diversity and proportion of epifauna from eutrophic to oligotrophic conditions. The proximal setting example (Brora Brick Clay Mb.) corresponds to Callovian offshore shelf deposits with a high primary productivity, bottom accumulation of organic matter, and a reduced sedimentation rate for siliciclastics. Eutrophic conditions favoured some infaunal foraminifera. Lately, inner shelf to shoreface transition areas (Fascally Siltstone Mb.), show higher sedimentation rates and turbidity, reducing euphotic−zone range depths and primary production, and then deposits with a lower organic matter content (high−mesotrophic conditions). This determined less agglutinated infaunal foraminifera content and increasing calcitic and aragonitic epifauna, and calcitic opportunists (i.e., Lenticulina). The comparatively distal setting of the Oxfordian example (Prebetic) corresponds to: (i) outer−shelf areas with lower nutrient input (relative oligotrophy) and organic matter accumulation on comparatively firmer substrates (lumpy lithofacies group) showing dominance of calcitic epifaunal foraminifera, and (ii) mid−shelf areas with a higher sedimentation rate and nutrient influx (low−mesotrophic conditions) favouring potentially deep infaunal foraminifers in comparatively unconsolidated and nutrient−rich substrates controlled by instable redox boundary (marl−limestone rhythmite lithofacies).

4

Effects of trophic conditions on benthic macrofauna in the vicinity of the River Swina mouth (Pomeranian Bay; Southern Baltic Sea)

100%

Maslowski J.

Oceanologia

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2003

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tom 45

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nr 1

The export of phytal material from the eutrophic Szczecin Lagoon into the Pomeranian Bay creates excellent trophic conditions for the local benthic fauna in the vicinity of the mouth of the river Świna, where the bottom macrofauna is abundant but highly variable. The changes in the bottom macrofauna biomass of selected taxa, chlorophyll a and nutrient concentrations were tested for associations. The biomasses of selected taxa varied in significant concordance, which suggests that these changes have common causes. Despite the importance of trophic enrichment to faunal abundance, no relationships between faunal biomass and chlorophyll a concentration changes were established. The presence of organic matter enables macrofauna to attain a high biomass, but population fluctuations are controlled by numerous factors. The significant relationship between the changes in the annual average phosphate levels and chlorophyll a concentrations in the Szczecin Lagoon indicates the importance of this nutrient to primary production processes in the Lagoon and to the trophic conditions for benthic macrofauna in the vicinity of the Świna mouth.

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The changes in trophic conditions of the Ukiel Lake, Olsztyn, years 1974-1993

100%

Mientki C., Teodorowicz M., Wisniewski G.

Polskie Archiwum Hydrobiologii

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1996

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tom 43

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nr 3

6

Impact of anthropogenic pressure on aquatic conditions in Lake Track in Olsztyn

100%

Grochowska J., Gawronska H.

Archiwum Ochrony Środowiska

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2005

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tom 31

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nr 2

7

Distribution and physiological activity of heterotrophic benthic bacteria in lakes with different trophic conditions located in the Bory Tucholskie National Park (Poland)

80%

Kubera L., Donderski W.

Polish Journal of Natural Sciences

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2017

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tom 32

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nr 3

Research on ecophysiology of benthic bacteria indicates that microbiological processes which occur in bottom sediments have a major influence on the development of water bodies. Organic matter accumulated on the bottom makes lakes shallower and accelerates their aging. Microbiological processes are particularly important in small lakes, which are a common element of the environment. This article presents the results of the investigation of the distribution of heterotrophic bacteria in the bottom sediments of four lakes with different trophic conditions in the Bory Tucholskie National Park and the relationship between the number of benthic bacteria and their physiological activity. The total number of benthic bacteria and the ability of isolated strains to carry out selected physiological processes were assessed by cultivating bacteria on appropriate substrates. We also determined the coefficient of physiological activity, which was then used for the correlation analysis and verification of the research hypothesis. The highest number of benthic bacteria was found in the eutrophic and dystrophic lakes. The lowest number was recorded in lake sediments of the mesotrophic lake, although at this site the studied strains were the most active. As a result, the correlation analysis confirmed the hypothesis that there is no relationship between the metabolic potential of benthic bacteria and their number in a sample.

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The relationship between primary production and respiration in the photic zone of the Great Mazurian Lakes (GMLS), in relation to trophic conditions, plankton composition and other ecological factors

80%

Siuda W., Kauppinen E. S., Kalinski T., Chrost R. J., Kiersztyn B.

Polish Journal of Ecology

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2017

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tom 65

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nr 3

The relation of primary production to respiration and dependence of both processes on various environmental factors were investigated in the surface waters of lakes of The Great Mazurian Lake System (GMLS) during summer seasons 2009–2011. Primary production and extracellular release was determined by ¹⁴C method, respiration (dark oxygen consumption) - by Winkler's method. Collected results allow to conclude that: (i) in all studied lakes primary production was primarily cyanobacterial, although in mesotrophic ones participation of eukaryotic phytoplankton in light CO₂ fixation was more pronounced; (ii) in mesotrophic part of GMLS primary production was limited alternately by N and P availability and less dependent on N and P regeneration processes, whereas in southern, eutrophic lakes it was primarily fueled by regeneration of biogenic substances from organic compounds and strongly limited by N resources; (iii) although in photic zone of whole GMLS respiration was dominated by heterotrophic bacteria, in its mesotrophic part also participation of other plankton components in respiration processes was significant and, (iv) that in eutrophic lakes planktonic respiration was more dependent on low molecular weight products liberated enzymatically from organic substrates than on organic compounds released by primary producers. The mean production to respiration ratio, which varied from 2.11 to 2.60 in northern, and from 2.05 to 3.67 in southern lakes suggested that during period of investigations photic zones of lakes of both parts of GMLS were net autotrophic systems.

9

Can popular systems of trophic classification be used for small water bodies?

80%

Joniak T., Nagengast B., Kuczynska-Kippen N.

Oceanological and Hydrobiological Studies

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2009

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tom 38

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nr 4

145-151

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Microbial ectoenzyme activity: useful parameters for characterizing the trophic conditions of lakes

80%

Kiersztyn B., Siuda W., Chrost R. J.

Polish Journal of Environmental Studies

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2002

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tom 11

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nr 4

This report describes the relationship between microbial enzymatic activities (aminopeptidase, esterase, and alkaline phosphatase) and the trophic state index of the studied lakes. Pelagic surface water samples were collected from nineteen lakes (Mazurian Lake District, northeastern Poland), characterized by different degrees of eutrophication, during spring homothermy and summer thermal stratification periods in 1999 and 2000. Aminopeptidase and esterase activities of microbial assemblages in unfiltered water samples were positively proportional to the trophic conditions of the studied lakes and both enzymes significantly correlated with Carlson's trophic state index of lakes. No correlation between alkaline phosphatase activities and the trophic state index of the studied lakes was found. This study showed that the selected parameters of microbial activity are very useful for the rapid determination of actual trophic conditions in lake ecosystems.

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Indicatory values in ecological description of diatoms from Polish lowlands

80%

Rakowska B.

International Journal of Ecohydrology and Hydrobiology

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2001

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tom 01

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nr 4

The first estimate of diatom indicatory values in Poland is presented. It comprises 455 diatom taxa occurring in ten ecologically different ecosystems: four rivers of various type and degree of pollution, limnocrenic and salty springs, oligotrophic springs, a dam reservoir, a brown coal excavation pit and a peat excavation pit. Indicatory values are used to describe saprobity, trophic conditions, tolerance for pollution, oxygen demand, water alkalinity pH, salinity, distribution and abundance. The compiled list of diatoms contains information about the conditions that are preferred by a given species, consequently, it may constitute a basis for the biological assessment of water quality.

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Eutrophication of Lake Swiete [Gniezno, Western Poland] as evidenced by succession of algal assemblages in sedimentary record

70%

Machowiak D.

Oceanological Studies

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1998

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tom 27

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nr 2

Ograniczanie wyników

Phytoplankton and the physicochemical background in an assessment of the ecological and trophic conditions in vendace-type lakes

The structure of psammic rotifer communities in two boreal lakes with different trophic conditions: Lake Vortsjarv and Lake Saadjarv (Estonia)

Foraminiferal assemblages as palaeoenvironmental bioindicators in Late Jurassic epicontinental platforms: Relation with trophic conditions

Effects of trophic conditions on benthic macrofauna in the vicinity of the River Swina mouth (Pomeranian Bay; Southern Baltic Sea)

The changes in trophic conditions of the Ukiel Lake, Olsztyn, years 1974-1993

Impact of anthropogenic pressure on aquatic conditions in Lake Track in Olsztyn

Distribution and physiological activity of heterotrophic benthic bacteria in lakes with different trophic conditions located in the Bory Tucholskie National Park (Poland)

The relationship between primary production and respiration in the photic zone of the Great Mazurian Lakes (GMLS), in relation to trophic conditions, plankton composition and other ecological factors

Can popular systems of trophic classification be used for small water bodies?

Microbial ectoenzyme activity: useful parameters for characterizing the trophic conditions of lakes

Indicatory values in ecological description of diatoms from Polish lowlands

Eutrophication of Lake Swiete [Gniezno, Western Poland] as evidenced by succession of algal assemblages in sedimentary record