Distribusi Vertikal Asplenium nidus L. di Kawasan Hutan Imbowiari, Kepulauan Yapen, Papua (Vertical Distribution of Asplenium nidus L. in the Imbowiari Forest, Yapen Islands, Papua)

Abstract

Asplenium nidus L. has an important role as one of the bio-indicators of the cenderawasih bird nest and is massively found in the Imbowiari Forest, Yapen Islands Regency, Papua. Until now, there is no study on the investigation of their vertical distribution. This study aimed to identify the vertical distribution of A. nidus and the relationship with the height of the host trees. The population and samples of this study were all A. nidus existing in the Imbowiari Forest, and the samples were all A. nidus that is in the observation plot. This study employed a track path method consisting of 3 transects containing 15 observation plots. The results revealed 63 A. nidus in the area of Imbowiari Forest with the total number of host trees of 49. The A. nidus and host tree relationship was shown by the equation Y = 0,014X + 1.016 with R2 = 0,058. There was no correlation between the height of host trees and the vertical distribution of A. nidus. Keywords: Asplenium nidus, Imbowiari Forest, vertical distribution

PENGARUH DIAMETER DAN KETINGGIAN INANG MANGROVE TERHADAP JUMLAH INDIVIDU ANGGREK (Dendrobium) DI KAMPUNG NUBUAI DISTRIK UREI FAISEI KABUPATEN WAROPEN

“…Kondisi ini menunjukkan bahwa jenis anggrek Dendrobium tersebut merupakan jenis epifit yang mempunyai toleransi terhadap lingkungan rendah atau memerlukan syarat hidup yang spesifik. Hal ini sejalan dengan pernyataan Darma et al, (2018); Raunsay et al, (2020) bahwa tumbuhan epifit tertentu memiliki toleransi terhadap lingkungan dan memiliki syarat khusus untuk dapat tumbuh.…”

Population density and distribution patterns of Austruca annulipes (Ring-legged fiddler crab) in the mangrove of Bogowonto Estuary, Kulon Progo, Yogyakarta, Indonesia

“…Populations of natural organisms generally have a clumped distribution pattern and are rarely found in a uniform pattern (Putra et al 2018). Therefore, natural populations distribution is divided into uniform, random, and clumped distributions (Raunsay et al 2020). Based on data from the calculation of the species A. annulipes in the Mangrove Bogowonto Estuary, the calculation results were obtained using the Morishita index formula of 1.38.…”