Results 11 to 20 of about 957 (177)

Late Quaternary changes in moisture availability and weathering intensity on the central Tibetan Plateau indicated by chemical signatures of ostracod shells

Frontiers in Earth Science, 2022
High-resolution multi-proxy records from two lakes on the southern Tibetan Plateau, Nam Co and Tangra Yumco, are used to infer long-term variations in the Asian monsoon system with a novel set of ostracod shell chemistry proxies.
Nicole Börner, Klaus Peter Jochum, Marleen Stuhr, Marleen Stuhr, Michelle Abstein, Birgit Plessen, Peter Frenzel, Junbo Wang, Liping Zhu, Antje Schwalb   +9 more
doaj   +1 more source

Bioindication using Fish and its Role in an Integrated Assessment of the Condition of Coastal Ecosystems: a Review [PDF]

Journal of Stress Physiology & Biochemistry, 2023
Coastal ecosystems located near cities, industrial and agricultural facilities are under significant anthropogenic influence. The complexity of modern anthropogenic impact on coastal ecosystems does not always make it possible to determine the ...
Olga Katkova-Zhukotskaya, Sofiya Kalyujnaya   +1 more
doaj  

Compatibility of Diatom Valve Records With Sedimentary Ancient DNA Amplicon Data: A Case Study in a Brackish, Alkaline Tibetan Lake

Frontiers in Earth Science, 2022
Lake sediments represent valuable and widely used archives for tracking environmental and biotic changes over time. Past aquatic communities are traditionally studied via morphological identification of the remains of organisms.
Sten Anslan, Sten Anslan, Wengang Kang, Katharina Dulias, Bernd Wünnemann, Bernd Wünnemann, Paula Echeverría-Galindo, Nicole Börner, Anja Schwarz, Yongqin Liu, Yongqin Liu, Yongqin Liu, Keshao Liu, Sven Künzel, Veljo Kisand, Patrick Rioual, Patrick Rioual, Ping Peng, Junbo Wang, Liping Zhu, Miguel Vences, Antje Schwalb   +21 more
doaj   +1 more source

Diversity of the Summer Phytoplankton of 43 Waterbodies in Bulgaria and Its Potential for Water Quality Assessment

Diversity, 2023
The general awareness of the threats on biodiversity and water quality raised the number of studies that use phytoplankton in assessment procedures. Since most metrics require obtaining mean values, this paper presents data that may help speed up field ...
Maya P. Stoyneva-Gärtner, Jean-Pierre Descy, Blagoy A. Uzunov, Peter Miladinov, Katerina Stefanova, Mariana Radkova, Georg Gärtner   +6 more
doaj   +1 more source

Macrophytes as bioindicators [PDF]

River Systems, 2003
Submerged macrophytes respond to changes in the nutrient concentrations in their environment. In contrast to diatoms e.g., submerged macrophytes are capable of taking up nutrients from both the sediment pore water and the overlying water. Therefore, macrophytes can provide a more comprehensive assessment of river ecosystems. Two methods using submerged
Alexander Kohler, Susanne Schneider
openaire   +1 more source

Integral assessment of the environment using the bioindication methods [PDF]

BIO Web of Conferences
Bioindication is an assessment of environmental factors and their dynamics based on the properties of ecological or biological systems. Bioindication methods are easily applied in monitoring of the environment. Bioindication is one of the areas of modern
Kuznetsova Yu.S., Modina M.A., Khekert E.V., Kondratiev S.I., Somko M.L., Nekrasova I.E.   +5 more
doaj   +1 more source

Migratory Songbirds as Potential Ectozoochorous Protist Dispersal Vectors. [PDF]

Ecol Evol
We demonstrate that migratory songbirds carry diatoms (Bacillariophyta) in their plumage, revealing an unexpected avian–algal association. All seven bird specimens we examined contained diatoms—224 frustules representing 25 genera and 9 orders, primarily freshwater, benthic pennates—some retaining chloroplasts prior to digestion and mounting (implying ...
Fischer SE, Jackson JJ, Hoffman EC, Streby HM, Spanbauer TL.   +4 more
europepmc   +2 more sources

Innovative observation of the environment. Bioindicators and biomonitors: definitions, strategies and applications / Aplinkos stebėsenos naujovės. Bioindikatoriai ir biomonitoriai: apibrėžtys, strategijos ir taikymas

Journal of Environmental Engineering and Landscape Management, 2012
For a number of years “classical” programs for environmental monitoring are being supplemented by bioindication measures. Investigations on living organisms or their remains (e.g.
Bernd Markert, Simone Wünschmann, Edita Baltrėnaitė   +2 more
doaj   +1 more source

Is there a common threshold to subfossil chironomid assemblages at 16 m water depth? Evidence from the Tibetan Plateau

Journal of Limnology, 2020
Fluctuating lake levels are an important driver of ecosystem change, and changes in the precipitation/evaporation balance of a region can lead to undesirable changes in ecosystem functioning. Large-scale changes in hydrology will become increasingly more
Andreas Laug, Falko Turner, Stefan Engels, Junbo Wang, Torsten Haberzettl, Jianting Ju, Siwei Yu, Qiangqiang Kou, Nicole Börner, Antje Schwalb   +9 more
doaj   +1 more source

Lichens as biological indicators of air quality in the urban area of Kuršumlija (Southern Serbia) [PDF]

Kragujevac Journal of Science, 2017
In this work, we provided a first indication of Kuršumlija (town of Southern Serbia) air quality using epiphytic lichens known as bioindicators. The investigations were carried out from April to October 2014.
Ristić Svetlana S., Kosanić Marijana M., Ranković Branislav R., Stamenković Slaviša S.   +3 more
doaj   +1 more source