Anthropogenic perturbations to the trophic structure in a permanent hypersaline shallow lake: La Salada de Chiprana (north-eastern Spain)

The Puna is a high altitude ecosystem of the Central Andes located in the desert plateaus above 3500 m a.s.l. that covers parts of north-eastern Chile, north-western Argentina, south-eastern Peru and mid-western Bolivia. It is characterised by the presence of endorheic basins. Laguna Lejía is an oligohaline shallow lake with alkaline pH, located in the Atacama Puna above 4000 m a.s.l. It is surrounded by volcanoes and enclosed in a secluded basin that is of great scientific interest, due to its ecological insularity. It has been designated by the government as a priority site for biodiversity conservation. The object of this study was to analyse the specific composition and the structure of the zooplankton community in this shallow, high altitude lake. In March 2012, zooplankton samples were taken for qualitative and quantitative analysis from 13 sampling stations in the lake and two adjacent pools. The bodies of water were characterised in the field using portable equipment, with the following parameters being measured: pH, water temperature, conductivity, and dissolved oxygen. The results indicate that the type of zooplankton community matches relatively well that observed in other low salinity, high Andean wetlands, although no calanoid copepods were found. The species found have been reported for high Andean zones and shallow lakes in countries bordering Chile. The absence of species with wide geographical distribution specific for low salinity, high Andean environments, is presumably due to the presence of geographical and environmental barriers that prevent colonization by those species.

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How many heteropteran species can live on alien goldenrods Solidago canadensis and S. gigantea in Europe?

Biologia ◽

10.2478/s11756-009-0151-2 ◽

2009 ◽

Vol 64 (5) ◽

Cited By ~ 6

Author(s):

Magdaléna Roháčová ◽

Pavel Drozd

Keyword(s):

Species Richness ◽

Czech Republic ◽

Small Proportion ◽

Trophic Structure ◽

Solidago Canadensis ◽

The Czech Republic ◽

The North ◽

North Eastern ◽

Plant Stand ◽

North Eastern Part

AbstractDuring the vegetation periods of 2001–2003 Heteroptera associated with the invasive alien tall goldenrods Solidago canadensis and S. gigantea were studied in seven model habitats in the north-eastern part of the Czech Republic. Heteropterans associated with adjacent growths were also studied in 2002–2003. A set of 3,042 specimens of 127 samples was analyzed with the aim of estimating average species richness, abundance and trophic structure of the heteropteran assemblages of the studied plant stand. On alien Solidago, 68 heteropteran species were recorded and 71 species were collected in the stands adjacent to the tall goldenrods with 48 shared species. Despite the nearly indentical species richness and similar abundances in Solidago and adjacent stands, there are differences in the trophic structure. The majority of the shared species and species found on Solidago canadensis only are polyphagous contrary to the majority of stenophagous species found on Solidago free stands only. Only a small proportion of heteropteran species that were recorded on alien Solidago stands are specialized to Asteraceae and their abundance was mostly low. Only the lygaeid Nysius senecionis, an Asteraceae specialist, occured in masses on S. canadensis in sunny and warm habitats. Similarly, predatory Orius minutus and O. niger reached high abundance values in Solidago stands compared to adjacent stands.

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Development of large shallow Lake Peipsi (North-Eastern Europe) over the Holocene based on the stratigraphy of phosphorus fractions

Journal of Paleolimnology ◽

10.1007/s10933-017-9954-2 ◽

2017 ◽

Vol 58 (1) ◽

pp. 43-56 ◽

Cited By ~ 4

Author(s):

Anu Kisand ◽

Anna-Liisa Kirsi ◽

Kristiina Ehapalu ◽

Tiiu Alliksaar ◽

Atko Heinsalu ◽

...

Keyword(s):

Eastern Europe ◽

Shallow Lake ◽

Phosphorus Fractions ◽

Lake Peipsi ◽

The Holocene ◽

Large Shallow Lake ◽

North Eastern

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NEW FOR DAGESTAN SPECIES OF TOMENTELLA (THELEPHORALES, BASIDIOMYCOTA)

South of Russia ecology development ◽

10.18470/1992-1098-2019-2-172-179 ◽

2019 ◽

Vol 14 (2) ◽

pp. 172-179

Author(s):

S. V. Volobuev ◽

Yu. Yu. Ivanushenko ◽

A. B. Ismailov

Keyword(s):

Trophic Structure ◽

Forest Ecosystems ◽

Morphological Description ◽

The North ◽

Natural Park ◽

Research Material ◽

Wide Range ◽

North Eastern ◽

The Republic ◽

Academy Of Sciences

Aim. To obtain new data on the species diversity and ecological characteristics of the Tomentella fungi growing in the North‐Eastern Caucasus.Materials and methods. Sampling of research material was performed in October, 2018 during a route survey of forest ecosystems in the vicinity of Delichoban, the Derbent district, and across the territory of the Upper Gunib natural park, the Gunib district, in the Republic of Dagestan. Identification of the collected material was carried out by light microscopy in the Laboratory of Systematics and Geography of Fungi, V.L. Komarov Botanical Institute of the Russian Academy of Sciences.Results. 3 Tomentella species, which are new for the Republic of Dagestan, have been identified, including T. bryophila, T. ellisii and T. fibrosa. All the discovered species are given with a brief morphological description, details of localities and comments on the current taxonomic position.Conclusion. The Tomentella Pers. ex Pat. s. l. genus is currently represented by 12 species in the territory of the Republic of Dagestan: Tomentella bryophila, T. cinerascens, T. crinalis, T. ellisii, T. ferruginea, T. fibrosa, T. lateritia, T. pilosa, T. punicea, T. stuposa , T. subtestacea and T. umbrinospora. All these species are found across a wide range of altitudinal gradient. Further mycological studies, including those using the molecular and genetic approach, are needed to reveal species new for the region and to expand the understanding of the spatial, ecological and trophic structure of its mycobiota.

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Modeling trophic structure and energy flows in a shallow lake, Yangtze River Basin, China: a case analysis for culture-based fishery practices

Aquaculture Environment Interactions ◽

10.3354/aei00257 ◽

2018 ◽

Vol 10 ◽

pp. 213-226 ◽

Cited By ~ 1

Author(s):

C Li ◽

Q Wang ◽

S Ye ◽

G Huang ◽

J Liu ◽

...

Keyword(s):

River Basin ◽

Shallow Lake ◽

Yangtze River ◽

Trophic Structure ◽

Yangtze River Basin ◽

Case Analysis ◽

Energy Flows

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Flooding affects food web structure and basal sources supporting fish guilds in a subtropical wetland and shallow lake

10.21203/rs.3.rs-1072401/v1 ◽

2021 ◽

Author(s):

Rodrigo Ferreira Bastos ◽

Alexandre Miranda Garcia ◽

Kirk O. Winemiller ◽

Nelson Ferreira Fontoura

Keyword(s):

Organic Matter ◽

Food Web ◽

Shallow Lake ◽

Trophic Structure ◽

Terrestrial Ecosystems ◽

Spatial And Temporal Variation ◽

Food Chains ◽

Food Web Structure ◽

Aquatic Animals ◽

Web Structure

Abstract Aquatic ecosystems exchange nutrients and organic matter with surrounding terrestrial ecosystems, and floods import allochthonous material from riparian areas into fluvial systems. We surveyed food web components of a wetland and shallow lake in a subtropical coastal region of Brazil to examine how community trophic structure and the entrance of allochthonous material into the food web were affected by floods. Stable isotope analysis was performed for samples of terrestrial and aquatic basal production sources and aquatic animals to trace the origin of organic matter assimilated by aquatic animals and estimate vertical trophic positions and food chain length. Lake and wetland trophic structures were compared for cool/wet and warm/dry seasons. Food web structure was hypothesized to differ based on hydrology, with the more stable lake having greater food web complexity, and seasonal flooding resulting in greater allochthonous inputs to the aquatic food web. We compared spatial and temporal variation in assemblage trophic structure using an adapted isotopic ellipse approach that plots assemblage elements according to δ13C on the x-axis and estimated TP on the y-axis. Lake trophic structure was more complex with longer food chains compared to that of the wetland. A greater contribution from terrestrial resources to animal biomass was observed in the wetland during the cool/wet period, and food chains in both habitats tended to be longer during the cool/wet period. Findings supported the hypothesis of greater assimilation of allochthonous sources during floods and greater trophic complexity in the more hydrologically stable system.

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Mesozooplankton of an impacted bay in North Eastern Brazil

Brazilian Archives of Biology and Technology ◽

10.1590/s1516-89132004000300020 ◽

2004 ◽

Vol 47 (3) ◽

pp. 485-493 ◽

Cited By ~ 24

Author(s):

Andréa Pinto Silva ◽

Sigrid Neumann-Leitão ◽

Ralf Schwamborn ◽

Lúcia Maria de Oliveira Gusmão ◽

Tâmara de Almeida e Silva

Keyword(s):

Species Diversity ◽

Trophic Structure ◽

Mesh Size ◽

Eastern Brazil ◽

Plankton Biomass ◽

North Eastern ◽

Wet Weight ◽

Marine Influence ◽

Parvocalanus Crassirostris ◽

Abundance And Distribution

Mesozooplankton abundance and distribution at Suape Bay, Pernambuco, was studied to assess the impacts caused by the construction of an internal port to increase the capacity of the Suape Port Complex. Zooplankton sampling was done at 3 stations during the dry (November-December/1997) and rainy (April-May/1998) seasons. A plankton net with 300 µm mesh size was used. Wet weight plankton biomass ranged from 44 mg.m-3 to 3,638 mg.m-3. Forty-five macrozooplankton taxa were registered. The most abundant was Copepoda. Among copepods, Acartia lilljeborgi, Parvocalanus crassirostris, Oithona hebes, Corycaeus (C.) speciosus and Temora turbinata were most frequent. Minimum abundance was 9 ind.m-3 and maximum was 2,532 ind.m-3. Average species diversity was 2.55 bits.ind-1. As a whole, Suape Bay has been under severe environmental stress and it seemed reasonable to assume that the recent modifications of the basin have resulted in changes in species composition and trophic structure, with an increase in marine influence.

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