Lambun Lacustrine - tsire-tsire ne da ke fuskantar barazanar bacewa gabaɗaya. Yana da ɗanɗano na shuke-shuken ganye wanda ke girma cikin yanayin ruwa. Musamman, yana tsiro a cikin kauri ko cikin gungu masu yawa tare da ƙasan tabkunan oligotrophic, kuma mafi kyawun yanayin shine:
- ƙasa mai yashi;
- yashi-silty ƙasa.
Zurfin "rayuwa" mita 4 ne ko sama da haka. Zai iya haifuwa ta hanyar motsa jiki, duk da haka, an kuma sami rikodin ajiyar kayan aiki dangane da shuka iri ɗaya. Wannan hanyar ta kara lamba ta banbanta ta yadda a yayin gudanar da ita, ana lura da kawar da kayan motsa jiki daga zagayen cigabanta. Har ila yau, abin lura ne cewa naman kaza na lacustrine yana da zaɓi sosai game da tsabtar ruwa, wanda a zahiri shine matsalar ƙananan yaduwar sa.
Janar halaye
Wani nau'in tsiro mai kama da shuka, wanda ya dace da tsarin rayuwar ruwa, shima yana da fasali masu zuwa:
- kara - yana da taqaitaccen girma da kuma flattened-spherical shape. A cikin diamita, zai iya kaiwa zuwa santimita 2.5. Akwai miƙa mulki zuwa rhizome, wanda ya fi gajarta;
- ganye - girma a cikin bunches, wanda a cikin akwai matsakaita guda 70. Suna da wahalar tabawa, amma madaidaiciya cikin sifa, kuma suna da duhun kore mai duhu da tsarin tsarin layi na linzami. Tsayin su yakai santimita 20 kuma diamita ne kawai milimita 2.5. Bungiyoyin da ke da siriri amma tushen sassauƙa suna girma daga rhizome;
- wani tsiro iri-iri, wanda yake halin kasancewar megaspores da microspores. Idan muka yi magana game da megasporangia, to suna da kusan tsawon centimita 1 da faɗi milimita 6, kuma suna a gindin faɗuwar ganyen. Amma ga microspores, a zahiri suna daɗa-lumpy, whitish da ƙananan a diamita - 0.5 mm.
A ina zaku iya haduwa?
A halin yanzu, naman kaza lacustrine yana gab da bacewa, amma a lokaci guda har yanzu ya zama ruwan dare a cikin yankuna kamar:
- yammacin Ukraine;
- Siberia ta Yamma da Gabas;
- yankin arewa maso yamma na yankin Turai na Rasha;
- Yankin Tekun Altai;
- jihohin Baltic;
- Belarus
Babban dalilan bacewar ana daukar su a matsayin rashin dacewar tsarin ruwa na tafkuna, gami da gurbatar su da ruwan sha na masana'antu da na gida. Masana kuma suna magana ne da tattakin ruwa mara nisa ta hanyar dabbobi a matsayin abubuwan da ba su da kyau.
Tunda naman kaza na lacustrine yayi aiki azaman bioindicator na yawan ruwa, ana ba da shawarar dasa shi a cikin tafkunan da aka tsara don noman kifi, da kuma a cikin akwatin kifaye.
