J 2017

A show cave management: Anthropogenic CO2 in atmosphere of Výpustek Cave (Moravian Karst, Czech Republic)

LANG, Marek, Jiří FAIMON, Pavel PRACNÝ and Sandra KEJÍKOVÁ

Basic information

Original name

A show cave management: Anthropogenic CO2 in atmosphere of Výpustek Cave (Moravian Karst, Czech Republic)

Name in Czech

Management zpřístupněné jeskyně: Antropogenní CO2 v atmosféře jeskyně Výpustek (Moravský kras, Česká republika)

Authors

LANG, Marek (203 Czech Republic, guarantor, belonging to the institution), Jiří FAIMON (203 Czech Republic, belonging to the institution), Pavel PRACNÝ (203 Czech Republic, belonging to the institution) and Sandra KEJÍKOVÁ (616 Poland, belonging to the institution)

Edition

Journal for Nature Conservation, JENA, GERMANY, Elsevier, 2017, 1617-1381

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10510 Climatic research

Country of publisher

Netherlands

Confidentiality degree

is not subject to a state or trade secret

Impact factor

Impact factor: 1.971

RIV identification code

RIV/00216224:14310/17:00095959

Organization unit

Faculty of Science

UT WoS

000395459400005

Keywords (in Czech)

antropogenní vliv; čas zadržení; dynamický model; oxid uhličitý; recesní analýza; zpřístupněná jeskyně

Keywords in English

Anthropogenic impact; Carbon dioxide; Dynamic model; Recession analysis; Response time; Show cave

Tags

Tags

International impact, Reviewed
Changed: 27/3/2018 21:55, Ing. Nicole Zrilić

Abstract

V originále

Anthropogenic impact on CO2 levels was studied in the Bear Chamber of the Výpustek Cave, a show cave in the Moravian Karst (Czech Republic), during a period of active ventilation and enhanced attendance. The study showed that the natural CO2 levels were controlled by (i) the natural CO2 influxes from soils/epikarst (up to ~ 5.64 × 10-2 mol s-1); and, (ii) the advective CO2 fluxes out of cave atmosphere (up to 4.66 × 10-2 mol s-1). During visitor presence, the anthropogenic CO2 flux into the chamber reached up to ~ 0.13 mol s-1 and exceeded all other CO2 fluxes. The reachable anthropogenic steady states at sufficient duration of stay (up to 2.65 × 10-1 mol m-3) could exceed the natural CO2 levels by factor of more than nine based on the number of visitors. Recession analysis of anthropogenic pulses showed that intervals between individual visitor groups would have to be up to ~ 6 hours long if the cave environment has to return to natural conditions. As such pauses between individual tours are hardly realizable, a risk analysis was conducted to find the consequences of breaking natural conditions. It showed that the condition under which dripwater becomes aggressive to calcite (i.e., the point when PCO2 in cave atmosphere exceeds the hypothetical CO2 concentrations in epikarst that has participated on the water formation, PCO2(H) = 10-1.56) is potentially reachable under extreme conditions only (enormous visitor stay period and visitor number). In case of condensed water, however, any increase in CO2 concentration will cause an increase of water aggressiveness to calcite. Therefore, in the periods and sites of enhanced condensation, it is important to strive for preservation of natural conditions.