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Structural characterization and species composition of mangrove vegetation in Lhokseumawe, Indonesia: Insight from multivariate analysis Putri, Adinda Aulia; Erlangga, Erlangga; Syahrial, Syahrial; Ezraneti, Riri; Nufus, Hayatun; Leni, Yusyam; Rolin, Febrina
Journal of Marine Studies Volume 1, Issue 3 (November, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/joms.v1i3.19052

Abstract

The structure of the plant community significantly influences the equilibrium of the surrounding environment, affecting the trophic interactions within its ecosystem. The investigation of mangrove vegetation in Cut Mamplam village was carried out in September 2021 to determine the condition and structural characteristics of the mangrove ecosystem by multivariate analysis. The mangrove vegetation in Cut Mamplam Village was sampled at three observation stations by establishing a transect parallel to the coast. Subsequently, the community structure was examined and assessed using cluster analysis and nonmetric multidimensional scaling using the PRIMER v7 software. The study findings indicate that the mangrove forest vegetation in Cut Mamplam Village consists of five species from three families. Avicennia alba, A. lanata, Bruguiera gymnorrhiza, Rhizophora mucronata and Sonneratia alba. The highest density of mangrove vegetation was observed in A. alba in all categories: trees (616.67 ind/ha), seedlings (833.33 ind/ha) and saplings (66666.67 ind/ha). Additionally, the highest important value index (IVI) was recorded in A. alba for all categories: trees (232.16%), seedlings (102.40%), and saplings (228.43%). A similarity of mangrove density between species was noted at 60%, resulting in the formation of two distinct groups. Regarding the basal area, the vegetation stands of A. alba and A. lanata exhibited the highest values (280.61 and 266.03 m2/ha, respectively). The similarity of basal area among the observed species was 20%, resulting in the formation of two distinct groups. Additionally, Station II, classified as having mature vegetation, demonstrated a maturity similarity of 80% between observation stations.
PENGARUH BRAND AMBASSADOR DAN IKLAN TERHADAP KEPERCAYAAN KONSUMEN Putri, Adinda Aulia; Masreviastuti
Jurnal Aplikasi Bisnis Vol. 10 No. 1 (2024)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jab.v10i1.3606

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh brand ambassador dan iklan terhadap kepercayaan konsumen. Penelitian ini merupakan jenis penelitian kuantitatif. Variabel yang digunakan adalah brand ambassador (X1), iklan (X2), dan kepercayaan konsumen (Y). Populasi penelitian ini adalah konsumen yang pernah melakukan pembelian produk skincare Somethinc secara online. Data dikumpulkan dengan cara menyebarkan kuesioner kepada 100 responden menggunakan teknik non-probability sampling dengan metode purposive sampling. Analisa data penelitian ini menggunakan analisis deskriptif, uji validitas, uji reliabilitas, uji asumsi klasik, dan uji hipotesis. Hasil penelitian ini menunjukkan bahwa brand ambassador (X1) berpengaruh positif dan signifikan terhadap kepercayaan konsumen dengan thitung 5,311 dan tingkat signifikan 0,000. Iklan (X2) berpengaruh positif dan signifikan terhadap kepercayaan konsumen dengan thitung 7,173 dan tingkat signifikan 0.000. Brand ambassador dan iklan secara simultan berpengaruh positif dan signifikan terhadap kepercayaan konsumen dengan Fhitung 129,438 dan signifikan 0.000. Diharapkan Somethinc dapat memilih brand ambassador yang memiliki kecerdasan dalam memberikan pengaruh untuk mendapatkan kepercayaan konsumen sehingga konsumen percaya dengan produk Somethinc yang diiklankan melalui brand ambassador.