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All Journal Natural Science: Journal of Science and Technology Jurnal Biologi Universitas Andalas Biocelebes Bioeksperimen: Jurnal Penelitian Biologi BioCONCETTA Bioscientist : Jurnal Ilmiah Biologi Andalasian International Journal of Agricultural and Natural Sciences Makara Journal of Science
Izmiarti Izmiarti, Izmiarti
Laboratorium Ekologi Hewan, Jurusan Biologi, FMIPA, Universitas Andalas
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Education Immunology & microbiology Social Sciences

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Respon Padi Gogo (Oryza sativa L.) terhadap Pemberian Biostimulan dari Ekstrak Rumput Laut Padina minor Zozy Aneloi Noli; Suwirmen Suwirmen; Izmiarti Izmiarti; Reza Oktavia; Putri Aliyyanti
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 2 (2021): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v9i2.4249

Abstract

Currently, seaweed extracts are widely used as plant biostimulants to increase the efficiency of nutrient use, tolerance of abiotic stress, and improve plant quality. In this study, tested the effect of different Padina minor seaweed extract formulas (liquid extract and powder extract) and the frequency of application of Padina minor seaweed extract (b0 = control; b1 = 1 x application; b2 = 2 x application; and b3 = 3 x application) as a biostimulant to the growth of upland rice. From the results of the study, it was found that there was no significant effect of the application of the two extract formulas and the frequency of application, but the administration of Padina minor extract 3 times during vegetative growth increased all growth parameters, such as: plant height, number of tillers, fresh and dry weight of plants, and chlorophyll content. It was concluded that giving Padina minor extract 3 times could increase the vegetative growth of upland rice effectively.
Water Quality Bioassessment Using Macrozoobenthos In The Batang Arau River, Padang City Saidina Bima; Izmiarti Izmiarti; Nofrita Nofrita
Jurnal Biologi Universitas Andalas Vol 10, No 2 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.10.2.70-77.2022

Abstract

Research on Water Quality Bioassessment Using Macrozoobenthic in the Batang Arau River, Padang City was carried out in March - September 2021. This study aims to determine the composition and structure of the macrozoobenthic community and water quality in the Batang Arau River based on the BMWP-ASPT index. This research uses the survey method and station determination by purposive sampling, based on environmental conditions. Macrozoobenthic samples were collected by using Surber net 30x30 cm2 and Eckman grab 15x15 cm2, and physical and chemical factors were also measured. The results showed that the macrozoobenthic communities found in the Batang Arau River were 37 genera with the composition of 6 genera Gastropods, 28 genera Insect, 2 genera Hirudinea, and 1 genus Oligochaeta. The total density of macrozoobenthic ranged from 140-1775 ind/m2 with the highest density at Station V and the lowest at Station III. The predominant genus (KR ≥ 10%) found at each station varied, Station I and Station II were Orthocladius and Caenis; Station III was Polypedium, Orthocladius, Baetis, and Elophila, Station IV was Orthocladius, Caenis, Erpobdella, Hellopdella, and Tubifex, and Station V was Melanoides. The diversity index of macrozoobenthic (H') in the Batang Arau River was 2.38 ranging from 0.5-2.57 classified as low to moderate, and the distribution of the macrozoobenthic population (E) is 0.65, ranging from 0.25-0.8 classified as uneven to equally. The water quality in the Batang Arau River based on the BMWP-ASPT index at Stations I and II are classified as unpolluted, Station III was lightly polluted, Station IV was moderately polluted, and Station V was heavily polluted.
KEPADATAN POPULASI DAN PERTUMBUHAN KERANG DARAH Anadara antiquata L. (Bivalvia: Arcidae) DI TELUK SUNGAI PISANG, KOTA PADANG, SUMATERA BARAT Nurdin, Jabang; Marusin, Neti; Izmiarti, Izmiarti; Anjas, Anjas
Makara Journal of Science Vol. 10, No. 2
Publisher : UI Scholars Hub

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Abstract

The population density and growth of the cockle Anadara antiquata L. Pelecypoda in Pisang River bay area Padang city, west Sumatera. The research has been done from March to December in 2004. The cockles A. antiquata were collected with systimatic stratified method. The cockle A. antiquata colletion site were divided three strata. The each strata were divided three station based on the water depth. Results of the research showed that the higest density of the cockle A. antiquata was found at station 1 strata III (1.8 ind./m2) and the lowest density at the station 3 strata I (0.9 ind./m2). The higest growth rate of A. antiquata was the length 3 cm (0.064 ± 0.043 cm/ind./15 day) and the lowest growth rate was the length 5 cm (0.009± 0.011 cm/ind./15 day) with corellation similarity Y=0.087–0.0165X; r=0.976).
Komposisi dan Struktur Komunitas Zooplankton di Danau Diatas, Sumatera Barat Setiawati, Sulis; Izmiarti, Izmiarti; Nofrita, Nofrita
Bioeksperimen: Jurnal Penelitian Biologi Vol 4, No 2: September 2018
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/bioeksperimen.v4i2.6880

Abstract

Penelitian tentang komposisi dan struktur komunitas zooplankton pada di Danau Diatas, Solok Sumatera Barat telah dilakukan pada bulan April sampai September 2016. Penelitian ini bertujuan untuk mengetahui komposisi dan struktur komunitas zooplankton di Danau Diatas kabupaten Solok, Sumatera Barat. Penelitian ini menggunakan metoda Purposive Sampling di empat stasiun. Sampel Zooplankton diambil menggunakan pompa air Alkon dan planktonnet.  Zooplankton yang didapatkan 44 spesies dengan komposisi Protozoa 5 spesies, Rotifera 22 spesies, Cladocera 13 spesies, dan Copepoda 4 spesies. Kepadatan total 20683,58 ind/l. indeks diversitas di Danau Diatas yaitu berkisar 1,043 -1,45. Indeks equitabilitas berkisar 0,31-0,54. Berdasarkan strata indeks equitabilitas berkisar 0,42-0,52, dan komunitas antar stasiun relatif seragam dengan indeks similaritas 53,06-61,53%. Study of composition and community structure zooplankton of Diatas Lake, Solok District, West Sumatera, from April until September 2016. The purpose of this research was to know the composition and structure of zooplankton. The research was conducted by using Purposive Sampling method with four research station. the samples by using water pomp machine and plankton net. The result showed that zooplankton it was found 44 zooplankton species with composition of Protozoa 5 species, 22 species of Rotifers, 13 species of Cladocera, and 4 species Copepods. The population diversity average 1723,6 ind/l.  diversity index (H’) ranged from 1,04 – 1,45, Equitability index (E) ranged from 0,31-0,54, Sorensen Similarity index ranged from 53,06 – 61,53 %.  
Bioassesment of Batang Air Dingin Water Quality by using Macrozoobenthos in Koto Tangah District, Padang City Risda Afifi Nasution; Nofrita Nofrita; Eggy Triana Putri; Izmiarti Izmiarti
Andalasian International Journal of Agriculture and Natural Sciences (AIJANS) Vol. 1 No. 01 (2020)
Publisher : Lembaga Penelitian dan Pengabdian, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (266.495 KB) | DOI: 10.25077/aijans.v1.i01.18-24.2020

Abstract

This study aims to determine the composition and structure of the macrozoobenthos community in Batang Air Dingin and water quality based on BMWP ASPT. This study used a survey method in determining the station by purposive sampling, based on typhical environmental condition along the river. Macrozoobenthos samples was collected by using surber net 30x30 cm2. The result showed the community in the form of Gastropods 6 genera, Insecta 26 genera, Oligochaeta 1 genus, and Hirudinea 1 genus. Total density of macrozoobenthos in the Batang Air Dingin river was 1182,22ind/m2 ranging from 180,00 ind/m2 to 402,22 ind/m2 with the highest density was found in the first station and the lowest at station four. The predominant type found at each station is different, station I is Elophyla, Neopherla, Hydropsyche; station II Eukifferiella, Polypedilum, Elophyla, Hydropsyche; station III Clithon, Eukifferiella, Polypedilum, Orthocladius; station IV Clithonand Thiara. The diversity of macrozoobenthos in Batang Air Dingin river range between 1,95-2,51 is classified as moderate with even distribution (E=0,84) range between 0,81-0,89. Batang Air Dingin water quality using BMWP ASPT from upstream to downstream range between 6,12 – 3,5. Classified unpolluted to heavily polluted.
Co-Authors - Afrizal - Afrizal Abd. Rasyid Syamsuri Afrizal S Anjas Anjas, Anjas Bimo Premono Chairul Chairul Dea Rahayu Silviana Eggy Triana Putri Gusna Merina Herdina Putra Hirzan Riyandi Husnul Mar’i Indah Yusliga Sari Purba Indra Junaidi Zakaria Jabang Nurdin Marusin, Neti Mhd Nur Allatif Misren Ahyuni Muhammad Ikhsan Muhammad Syahid Ridho muryani, nova Nofrita Nofrita Nofrita Nofrita Putri Aliyyanti Reza Oktavia Risda Afifi Nasution Rizaldi Rizaldi Saidina Bima Serly Marselina Arifin, Serly Marselina Sindi Mardatila Solfiyeni Solfiyeni Suci Frimanozi Sulis Setiawati Sulis Setiawati Suwirmen, Suwirmen Vivi Safitri Vivi Savitri Zozy Aneloi Noli