Raseliniste Bukovec-Olecky/Peat Bog Bukovec-Olecky EarthCache
Raseliniste Bukovec-Olecky/Peat Bog Bukovec-Olecky
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Tato earthkes Vas privede do nejvychodnejsí casti Ceske republiky v katastru obce Bukovec. Na vychozich souradnicich se naleza zacatek naucne stezky, na ktere zjistite radu informaci o mistni oblasti. Pro zvladnuti teto eartkese Vas nicmene budou zajimat informace o prirodni rezervaci Bukovec-Olecky, jejiz soucasti je i degradujici raseliniste.
Necekejte zadne velke raseliniste podobne tem velkym znamym. Jedna se o male degradujici raseliniste. A jeho ukazka je principem teto earthkese. Kdo chce videt klasicka raseliniste musi zvolit k navsteve jinou lokalitu.
Nejdrive ale neco malo o raselinisti jako takovem.
Jedna se o mokrady, ktere produkují a akumulují organogenni hmotu, coz znamena, ze produkce organicke hmoty je mnohem vyraznejsi nez její dekompozice. Organogenni hmotou muze byt raselina vznikajici z odumrelych tel raseliniku (Sphagnum sp.) v podminkach trvale zamokrenych stanovist.
Raselineni (ulmifikace) probihá ve vodnim prostredi za nepritomnosti vzduchu, ve kterem se celuloza a jine sacharidy rozkladaji podle celkove rovnice: C6H10O5 = CO2 + 3 H2O + CH4 + 4C
Raseliniste lze delit podle mnoha hledisek:
podle chemismu
- minerotrofni (slatiniste) - prijimaji vodu, která prosla mineralni pudou, charakteristicka vysokou hladinou podzemni vody, obsazujici terenni deprese
- ombrotrofni (vrchoviste) - vytvareji charakteristicke raselinne utvary vystupujici nad okolni teren, ziviny prijimaji pouze ve sražkove vode
- mezotrofni tvori prechod mezi ombrotrofnimi a minerotrofnimi stanovisti
podle hydrologie
- ombrogenni – z hlediska vodniho rezimu jsou tato raseliniste odkazana pouze na srazky
- geogenni – raseliniste otevrená i pro jine zdroje vody nez pouze srazky
- limnogenni – vyviji se podel pomalu tekoucich rek nebo na jezerech
- topogenni - vyviji se v terennich depresich s mistnim tokem podzemni vody
- soligenni – vyviji se na toku povrchove vody (pramenistni, pretekana, prutocna raseliniste)
S typem raseliniste souvisi i jeho pH:
| Ombrotrofni |
3,8 |
| Prechodove |
4,1-4,8 |
| Minerotrofni |
5,6-7,5 |
V CR se raseliniste vyskytuji prevazne v Cechach (Jizerske hory, Krusne hory, Sumava). Na Morave je vyznamnym raselinistem Rejviz v Jesenikach.
Obecne je vyskyt raselinist v CR vazan na:
horske oblasti - ombrogenni vrchoviste podminena vysokym rocnim uhrnem srazek
panevni oblasti - udolni minerogenni raseliniste v bezodtokych terennich depresich s nepropustnymi dny
Tolik by stacilo k teorii a ted jiz k otazkam:
- Jaka je vymera prirodni rezervace Bukovec-Olecky?
- Jaky typ reseliniste se zde nachazi; slatiniste, vrchoviste nebo prechodny typ?
- Jaké dva zajimave druhy dvoukridleho hmyzu zde byly nalezeny?
- Co zpusobuje degradaci raseliniste?
Nepovinne muzete pridat k vasemu logu foto z mista earthkese.
ENGLISH VERSION (THE INFORMATION TABLE IS IN CZECH ONLY, PLEASE CONTACT ME FOR HELP)
This earthcache will bring you to the easternmost part of Czech Republic near village Bukovec. At the posted coordinates you will find beginning of the educational trail, where you can learn some information about local area, especially about nature reserve Bukovec-Olecky with degraded peat bog.
But first, something about peat bog itself
The peat bog is a wetland that produces and accumulates organogenic mass (plant material). This means that production of organic mass is much more considerable that its decomposition. The organogenic mass can be formed from dead parts of peat moss (Sphagnum sp.) in condition of permanently wet areas.
Peat formation takes place in the aquatic environment in the absence of air in which the cellulose and other carbohydrates decompose according to the overall equation: C6H10O5 = CO2 + 3 H2O + CH4 + 4C
Peat bogs can be divided according to many factors, for instance:
by chemistry
- minerotrophic (fen) - take water that has passed through mineral soil, characterized by high groundwater level, occupying terrain depression
- ombrotrophic (bog) - form characteristic peat formations rising above the surrounding terrain, nutrients taken only in rainfall water
- mesotrophic - a transition between ombrotrophic and minerotrophic habitat
by hydrology
- ombrogenic - in terms of water regime, these peat bogs take water only from rainfall
- geogenic - peat bogs opened also to other sources of water than only rainfall
- limnogenic - develops along slowly flowing rivers or lakes
- topogenic - develops in the terrain depression with a local groundwater flow
- soligenic - develops in the flow of surface water (spring, overflowing, flow peat bog)
Also pH is related to the type of peat bog:
| Ombrotrophic |
3,8 |
| Transitional |
4,1-4,8 |
| Minerotrophic |
5,6-7,5 |
In the Czech Republic the peat bogs are found predominantly in Bohemia (Jizerske Mountains, Krusne Mountains, Sumava). In Moravia there is a significant peat bog Rejviz in Jeseniky Mountains.
Generally, the occurrence of peat in the Czech Republic is bound to:
mountain areas - ombrotrophic bogs characterized by high total annual rainfall
valley areas - valley minerotrophic peat bog in drainless terrain depressions with impermeable bottoms
That´s all with theory and now to the questions:
- What is the area of Nature Reserve Bukovec-Olecko??
- What type of peat bog is located here; fens, bogs or transitional type?
- What are two interesting species of Diptera (dvoukridli) that have been found here?
- What causes the degradation of peat bog?
Optional task is to upload picture(s) from earthcache location to your log.
zdroj/source:
H. Švehláková: Ekologické aspekty technické hydrobiologie, VŠB – Technická univerzita Ostrava, 2006
http://cs.wikipedia.org/wiki/Ra%C5%A1elini%C5%A1t%C4%9B
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