?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=ISOLASI+DAN+IDENTIFIKASI+KEANEKARAGAMAN+BAKTERI+PADA%0D%0ATEPHRA+GUNUNG+ANAK+KRAKATAU%0D%0APASCA+ERUPSI+DESEMBER+2018&rft.creator=INDAH+SELVIANA+OKTAVIANI%2C+1714181017&rft.subject=600+Teknologi+(ilmu+terapan)&rft.subject=630+Pertanian+dan+teknologi+yang+berkaitan&rft.description=Erupsi+Gunung+Anak+Krakatau+(GAK)+pada+Desember+2018+menyebabkan%0D%0Aperubahan+morfologi+dan+kerusakan+lahan+yang+signifikan+berupa+pengendapan%0D%0Amaterial+piroklastik+baru+dan+musnahnya+seluruh+vegetasi+pionir.+Material%0D%0Apiroklastik+(tephra)+mengandung+mineral+primer+yang+berdampak+positif+bagi%0D%0Apembentukan+kesuburan+tanah+dan+keanekaragaman+hayati.+Penelitian+eksplorasi%0D%0Aini+bertujuan+untuk+mengidentifikasi+populasi%2C+keanekaragaman%2C+dan+dominansi%0D%0Abakteri+tanah+pada+tephra+GAK+pasca+erupsi+Desember+2018.%0D%0APengambilan+sampel+tephra+GAK+dilakukan+secara+toposquence+pada+4%0D%0Aprofil+berbeda+dan+diperoleh+19+sampel.+Isolasi+dan+perhitungan+populasi+bakteri%0D%0Adilakukan+dengan+metode+Total+Plate+Count+(TPC)+sebanyak+tiga+ulangan+(triplo)%0D%0Apada+setiap+pengenceran.+Selanjutnya%2C+dilakukan+identifikasi+morfologi+bakteri%2C%0D%0Apemurnian+isolat+bakteri%2C+dan+pengujian+isolat+bakteri+pada+suhu+tinggi.%0D%0AHasil+penelitian+menunjukkan+total+populasi+bakteri+tephra+GAK+tergolong%0D%0Amasih+rendah.+Secara+umum+total+populasi+bakteri+dari+lapisan+atas+ke+lapisan%0D%0Abawah+mengalami+penurunan.+Sedangkan%2C+secara+toposquence+total+populasi%0D%0Abakteri+tertinggi+terdapat+pada+profil+3+sebesar+3%2C41+Log+CFUg-1%0D%0A%0D%0Adan+total+populasi%0D%0A%0D%0Abakteri+terendah+terdapat+pada+profil+4+sebesar+1%2C98+Log+CFUg-1%0D%0A%0D%0A.+Tingkat%0D%0Akeanekaragaman+(H%CB%88)+bakteri+tephra+GAK+tergolong+rendah+berkisar+0+%E2%80%93+0%2C92%0D%0Asehingga%2C+tingkat+dominansi+bakteri+tergolong+tinggi+(D+%3D+0%2C5+%E2%80%93+1).+Kelompok%0D%0Abakteri+yang+mendominasi+pada+tephra+yaitu+bakteri+termofilik+yang+mampu%0D%0Atumbuh+pada+cekaman+suhu+40oC+dan+45oC.%0D%0AKata+kunci%3A+dominansi+(D)%2C+keanekaragaman+(H%CB%88)%2C+tephra+GAK%2C+total+populasi%0D%0A%0D%0Abakteri+(CFUg+-1%0D%0A).%0D%0A%0D%0AThe+eruption+of+Mount+Anak+Krakatau+(GAK)+in+December+2018+caused%0D%0Asignificant+morphological+changes+and+land+damage+in+the+form+of+deposition+of%0D%0Anew+pyroclastic+material+and+the+destruction+of+all+pioneer+vegetation.+Pyroclastic%0D%0Amaterial+(tephra)+contains+primary+minerals+that+have+a+positive+impact+on+the%0D%0Aformation+of+soil+fertility+and+biodiversity.+This+exploratory+research+aims+to%0D%0Aidentify+the+population%2C+diversity%2C+and+dominance+of+soil+bacteria+in+GAK%E2%80%99s+tephra%0D%0Aafter+the+December+2018+eruption.%0D%0ASampling+of+GAK%E2%80%99s+tephra+was+carried+out+using+toposquence+on+4+different%0D%0Aprofiles+and+19+samples+were+obtained.+Isolation+and+calculation+of+the+bacterial%0D%0Apopulation+used+the+Total+Plate+Count+(TPC)+method+with+three+replications%0D%0A(triplo)+in+each+dilution.+Then%2C+identification+of+bacterial+morphology%2C+purification%0D%0Aof+bacterial+isolates%2C+and+testing+of+bacterial+isolates+in+high+temperature+was%0D%0Aperformed.%0D%0AThe+results+showed+that+the+total+population+of+GAK%E2%80%99s+tephra+bacteria+was%0D%0Astill+low.+In+general%2C+the+total+population+of+bacteria+from+the+top+layer+to+the%0D%0Abottom+layer+decreased.+Meanwhile%2C+in+toposquence%2C+the+highest+total+bacterial%0D%0Apopulation+was+found+in+profile+3+with+3.41+Log+CFUg-1+and+the+lowest+total%0D%0Abacterial+population+was+found+in+profile+4+with+1.98+Log+CFUg-1%0D%0A%0D%0A.+The+level+of%0D%0Adiversity+(H%CB%88)+of+GAK%E2%80%99s+tephra+bacteria+is+low%2C+ranging+from+0+%E2%80%93+0.92%2C+means+that%0D%0Athe+level+of+bacterial+dominance+is+high+(D+%3D+0.5+%E2%80%93+1).+The+group+of+bacteria+that%0D%0Adominates+in+tephra+are+thermophilic+bacteria+that+are+able+to+grow+within+the%0D%0Atemperatures+of+40oC+and+45oC.%0D%0AKeywords%3A+dominance+(D)%2C+diversity+(H%CB%88)%2C+tephra+GAK%2C+total+bacterial+population%0D%0A%0D%0A(CFUg+-1%0D%0A).&rft.publisher=Fakultas+Pertanian&rft.date=2021-11-10&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F61308%2F1%2FABSTRAK%2520-%2520Finta%2520Yaya.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F61308%2F2%2FSKRIPSI%2520FULL%2520-%2520Finta%2520Yaya.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F61308%2F3%2FSKRIPSI%2520FULL%2520TANPA%2520BAB%2520PEMBAHASAN%2520-%2520Finta%2520Yaya.pdf&rft.identifier=++INDAH+SELVIANA+OKTAVIANI%2C+1714181017++(2021)+ISOLASI+DAN+IDENTIFIKASI+KEANEKARAGAMAN+BAKTERI+PADA+TEPHRA+GUNUNG+ANAK+KRAKATAU+PASCA+ERUPSI+DESEMBER+2018.++Fakultas+Pertanian%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F61308%2F