Video: Thaum cov kab mob ntsib qhov txwv tsis pub muaj hom kev loj hlob li cas lawv qhia?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum cov kab mob ntsib cov yam txwv , lawv qhia logistics kev loj hlob (S-shaped nkhaus, nkhaus B: Daim duab hauv qab). Kev sib tw rau cov peev txheej xws li khoom noj thiab chaw ua rau lub kev loj hlob tus nqi kom tsis txhob nce, yog li cov pej xeem theem tawm. Lub tiaj qaum kab ntawm ib kev loj hlob nkhaus yog lub peev xwm nqa tau.
Hais txog qhov no, peb qhov piv txwv ntawm kev txwv tsis pub muaj dab tsi?
Piv txwv ntawm kev txwv yam suav nrog kev sib tw, parasitism, predation, kab mob, cov qauv huab cua txawv txav, ntuj calamities, raws caij nyoog cycles thiab tib neeg kev ua ub no. Hais txog kev loj hlob ntawm pej xeem, txwv yam tuaj yeem muab faib ua qhov ntom ntom-dependent yam thiab density-independent yam.
Dab tsi yog 5 yam txwv tsis pub muaj nyob hauv ecosystem? Lwm yam txwv yam muaj xws li lub teeb, dej, as-ham los yog minerals, oxygen, muaj peev xwm ntawm ib tug ecosystem rov siv cov khoom noj khoom haus thiab/lossis pov tseg, kab mob thiab/los yog kab mob, qhov kub thiab txias, qhov chaw, thiab predation.
Dab tsi yog qhov txwv tsis pub muaj neeg coob coob?
Limiting yam yog ib puag ncig yam uas khaws cia ib cov pejxeem tus lej ntawm loj hlob tawm ntawm kev tswj hwm. Qee qhov piv txwv ntawm txwv yam yog zaub mov, dej, chaw nyob, thiab kab mob. Tus lej siab tshaj plaws ntawm ib lub cev ib puag ncig tuaj yeem txhawb nqa yog lub peev xwm nqa tau rau lub cev.
Hom kev txwv qhov ntsuas kub yog dab tsi?
Kev txwv qhov tseem ceeb kuj tuaj yeem faib ua pawg ntxiv. Lub cev yam lossis abiotic yam suav nrog qhov kub thiab txias, dej muaj, oxygen, salinity, lub teeb, zaub mov thiab cov as-ham; biological yam tseem ceeb los yog biotic yam, muaj kev cuam tshuam ntawm cov kab mob xws li kev ua phem , kev sib tw, parasitism thiab herbivory.
Pom zoo:
Puas yog txhua yam kab mob qhia kev loj hlob?
Tag nrho cov kab mob muaj sia qhia kev loj hlob los ntawm kev sib npaug lossis los ntawm kev loj hlob. Nws yog ib qho irreversible nce nyob rau hauv loj ntawm ib tug neeg. Rau cov kab mob loj dua, kev loj hlob yog cuam tshuam nrog kev loj hlob ntawm cov khoom tshiab hauv nruab nrab lossis hauv cov laus. Yog li ib yam ntawm kev loj hlob sab hauv yog pom nyob rau hauv creatures
Dab tsi yog qhov tseem ceeb ntawm kev tawm hauv cov crystal kev loj hlob tsis muaj kev cuam tshuam?
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