Alders miti inodonha. Vanoumba genus ine marudzi anosvika makumi matatu nemashanu akasiyana. Green alder, grey alder, uye black alder inokura muCentral Europe. Alder ine hukama nebirch.
Chinhu chakakosha nezve alders midzi yavo. Vanoumba machunduru akakosha anoshanda pamwechete nemabhakitiriya. Pamwe chete vanoshandura nitrogen inowanikwa muzvisikwa kuitira kuti maalder agone kuishandisa sefetireza. Saka maalder anogonawo kugara uko kune kudya kushoma muvhu kune zvimwe zvirimwa.
Kutenda kune ichi chivakwa, alders anowanzo kuoneka semiti yekutanga, semuenzaniso, mushure mekuputika. Ndokusaka zvichinzi mapiyona ezvirimwa. Gray uye dema alder vanofarira kukura pamabhangi kana neimwe nzira munzvimbo dzine unyoro. Kune zvakare kudya kushoma muvhu imomo.
Alder huni inorema-pakati uye iri nyore kushanda nayo. Munguva yakapfuura, yainyanya kushandiswa kugadzira marasha, ayo aishandiswa kugadzira pfuti. Alder huni inoshandiswawo kugadzira fenicha. Iyo yakanyatsokodzerawo ngoma uye zvakafanana rhythm zviridzwa. Zvisinei, alder huni haabvumiri unyoro. Saka haina kushandiswa kumasuo epamberi kana madziro ekunze.
MuCentral Europe, maalder ari mungozi. Pseudofungus inoita kuti midzi yawo iore. Howa hausi fungi chaizvo asi hune hukama zvakanyanya nealgae.