Paleoreconstruction of ecological changes in filled up lake using subfossil chironomids - preliminary results from the Vihorlat Mts, Slovakia

PAŘIL, Petr and Veronika BŘEČKOVÁ. Paleoreconstruction of ecological changes in filled up lake using subfossil chironomids - preliminary results from the Vihorlat Mts, Slovakia. In 12th Chironomid workshop |New Forest, UK, 10-13th June 2013. 2013.

Basic information

• Original name: Paleoreconstruction of ecological changes in filled up lake using subfossil chironomids - preliminary results from the Vihorlat Mts, Slovakia
• Name in Czech: Paleorekonstrukce ekologických změn v zazemněném jezeře pomocí subfosilních pakomárů - předběžné výsledky z Vihorlatu na Východním Slovensku
• Authors: PAŘIL, Petr (203 Czech Republic, guarantor, belonging to the institution) and Veronika BŘEČKOVÁ (203 Czech Republic, belonging to the institution).
• Edition: 12th Chironomid workshop |New Forest, UK, 10-13th June 2013, 2013.

Other information

• Original language: English
• Type of outcome: Conference abstract
• Field of Study: 10600 1.6 Biological sciences
• Country of publisher: United Kingdom of Great Britain and Northern Ireland
• Confidentiality degree: is not subject to a state or trade secret
• RIV identification code: RIV/00216224:14310/13:00066181
• Organization unit: Faculty of Science
• Keywords (in Czech): subfosilní pakomáři; zazemněné jezero; paleolimnologie; ekologické změny
• Keywords in English: subfossil chironomids; palaolake; paleolimnology; ecological changes
• Tags: International impact

Abstract

This study brings the preliminary results of paleorecostruction of ecological changes in history of paleolake based on subfossil chironomid head capsules. The study site, small filled up lake (area of 2.3 ha) in altitude of 820 m a. s. l., is located in the Vihorlat Mountains, 20 km westwards from Ukraine boundary in the East of Slovakia (48 g. 54' 46" N, 22 g. 09' 52" E). The catchment of palaeolake (45 ha) is placed on SE slope of the Motrogon hill and covered dominantly by broad-leaved forest. The uppermost 3.2 m thick layer of the lake is filled by peat and macroremnants at present, bud lower limnic layer, which goes to the total depth of 11,3 m, consisting of different types of gyttja. For the pilot analysis we use the lowermost 7.9 m of limnic sediment, which was separated into 5 cm thick layers. In this part of core we select ten pilot chironomid samples in different layers (340-45, 530-35, 540-45, 705-10, 720-25, 920-25, 955-60, 1015-20, 1040-45, 1085-90 cm) according macroscopically distinguishable changes in gyttja colour. In total we found 695 specimens of 40 chironomid taxa. The preliminary results indicate depiction of transition between Late Glacial and Holocene on relatively very long core with evidence of human impact in the uppermost zone only (pers. comm. Libor Petr). The first insight into chironomid assemblages promises very valuable material for analyses of detailed record of ecological changes in history of the paleolake, however much higher number of treated layers is needed to get more reliable results. Study was supported by research projects of the Grant agency of the Czech Republic (GAP504/11/0429).

Abstract (in Czech)

Studie přináší předběžné výsledky paleorekonstrukce ekologických změn podle pakomárovitých ze zazemněného jezera v pohoří Vihorlat na Východním Slovensku.

Links

• GAP504/11/0429, research and development project: Name: Gradienty prostředí, vegetační dynamika a krajinné změny v Západních Karpatech od pozdního glaciálu po současnost (Acronym: PALAEO-CARPATHIANS)

Investor: Czech Science Foundation