نتایج جستجو برای: chironomid abundance

تعداد نتایج: 81236  

Journal: :Revista de biologia tropical 2013
Liseth Pérez Julia Lorenschat Julieta Massaferro Christine Pailles Florence Sylvestre Werner Hollwedel Gerd-Oltmann Brandorff Mark Brenner Gerald Islebe María del Socorro Lozano Burkhard Scharf Antje Schwalb

Chironomids, diatoms and microcrustaceans that inhabit aquatic ecosystems of the Northern Neotropics are abundant and diverse. Some species are highly sensitive to changes in water chemical composition and trophic state. This study was undertaken as a first step in developing transfer functions to infer past environmental conditions in the Northern lowland Neotropics. Bioindicator species abund...

Journal: :Sustainability 2023

Adult swarms of non-biting pestiferous midges (Chironomidae: Diptera), primarily Chironomus plumosus, prevail over and around Lake Trasimeno (Italy) during the summer season. The current field survey (2018–2021, 33 sampling occasions) was carried out in central area lake. It revealed a macrobenthic community consisting Chironomidae (40.72%) Oligochaeta (59.23%). plumosus dominant chironomid spe...

Journal: :Soil Biology & Biochemistry 2023

The nutrient-poor soils of Antarctica are sensitive to change. Recent increases in the number anthropogenic introductions mean that understanding impact non-native species on Antarctic is pertinent, and essential for developing future risk assessments management strategies. Through comparative baseline vegetation, microbes, soil chemistry, substrate composition micro-arthropod abundance, this s...

2017
Ted Angradi E. William Schweiger David Bolgrien TED R. ANGRADI E. WILLIAM SCHWEIGER DAVID W. BOLGRIEN

We examined inter-habitat variation in benthic macroinvertebrate assemblages in the 180-km Garrison Reach of the Upper Missouri River, North Dakota (USA) in 2001–2003. The Garrison Reach is unchannelized with a mostly rural setting. Flows are regulated by Garrison Dam.We sampled benthos from three habitats defined a priori: channel, shoreline, and backwater. Benthic assemblages were different i...

Journal: :Water 2023

Northwestern Russia remains the only region in Northern Eurasia where no regional chironomid-based inference model for quantitative palaeoclimatic reconstructions has been developed. Using palaeolimnological methods, we investigated subfossil chironomid surface sediments from a data set of 98 lakes nine subregions European part Russia. We identified 143 taxa lakes. Multivariate statistical anal...

2007
S. Engels K. F. Helmens

Quantitative palaeotemperature estimates for the earlier part of Oxygen Isotope Stage (OIS-) 3 are inferred from subfossil chironomid remains. The high-latitudinal study site of Sokli, northeast Finland, provides for a unique lacustrine deposit covering the earlier part of OIS-3, and the chironomid remains found in the sediments show that a shallow lake with a diverse fauna was present at the s...

Journal: :Journal of Paleolimnology 2021

Abstract Oxygen-isotope values of invertebrate cuticle preserved in lake sediments have been used palaeoenvironmental reconstructions, generally with the assumption that fractionation oxygen isotopes between and water ( $$\upalpha_{\text{cuticle}-\text{H}_{2}\text{O}}$$ ? cuticle</mml:mte...

Journal: :EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES 2015

2003
Matthew J. Wooller Donna Francis Marilyn L. Fogel Gifford H. Miller Ian R. Walker Alexander P. Wolfe

A paleoenvironmental perspective of temperature change is paramount to understanding the significance of recent warming in the Arctic. Late Quaternary sediments from many arctic lakes provide environmental archives with decadal resolution, but reconstructions are hampered by the relative insensitivity of many traditional proxies to temperature. Here, we show that the O of head capsules of chiro...

Journal: :Medical Entomology and Zoology 1973

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