Mary Allen
Taw qhia: Nkag siab txog cov khoom noj khoom haus
Cov saw zaub mov yog lub ntsiab lus tseem ceeb hauv ecology uas piav qhia txog kev hloov pauv ntawm lub zog thiab cov khoom noj los ntawm ib lub cev mus rau lwm qhov. Nws yog ib feem ntawm cov khoom muaj sia nyob uas txhua lub cev yog qhov chaw ntawm cov khoom noj rau lwm tus. Lub hauv paus qauv ntawm cov khoom noj khoom haus pib nrog cov thawj tsim xws li cov nroj tsuag thiab algae, uas yog tom qab noj los ntawm thawj cov neeg siv khoom xws li herbivores. Cov neeg siv khoom thib ob, xws li cov tsiaj txhu, tom qab ntawd pub rau cov neeg siv khoom loj, thaum cov neeg tau txais kev pabcuam thib ob, xws li cov tsiaj nyeg, pub rau cov neeg siv khoom thib ob. Kev nkag siab txog lub luag haujlwm ntawm ntau yam kab mob hauv cov khoom noj khoom haus yog qhov tseem ceeb hauv kev tswj hwm kev noj qab haus huv ecosystem.
Txhais cov neeg siv khoom thib ob
Cov neeg siv khoom thib ob yog cov kab mob uas pub rau cov neeg siv khoom thawj. Lawv tseem hu ua carnivores, uas txhais tau hais tias lawv feem ntau noj nqaij. Hauv cov khoom noj khoom haus, lawv nyob rau qib thib peb trophic tom qab thawj cov neeg tsim khoom thiab thawj cov neeg siv khoom. Cov kab mob no ua lub luag haujlwm tseem ceeb hauv ecosystem vim lawv pab tswj cov pej xeem ntawm thawj cov neeg siv khoom thiab tswj kom muaj kev sib npaug ntawm cov khoom noj. Yog tias tsis muaj cov neeg siv khoom thib ob, cov pej xeem ntawm cov neeg siv khoom tseem ceeb yuav nce ntxiv, ua rau overgrazing thiab depletion ntawm cov nroj tsuag, uas nyob rau hauv lem yuav cuam tshuam rau tag nrho ecosystem.