Seedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh

The status of natural seedlings near localities in the Sundarbans Mangrove Forest was assessed through a stratified random sampling method to observe seedling composition and diversity, importance value index, family importance value, and species evenness. A total of 63 sample plots of 3,990 m2 are...

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Autores principales:	ASM Helal Siddiqui, Md. Masudur Rahman, Md. Najmus Sayadat Pitol, Md. Akramul Islam, Sk Md. Mehedi Hasan
Formato:	article
Lenguaje:	EN
Publicado:	Universitas Gadjah Mada 2021
Materias:	diversity, evenness, family, importance value, richness, salinity, seedling Agriculture (General) S1-972 Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/da54331caf6f4482a1d357cd1a99a417
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spelling	oai:doaj.org-article:da54331caf6f4482a1d357cd1a99a4172021-11-08T08:40:57ZSeedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh2540-95732540-958110.22146/jtbb.65241https://doaj.org/article/da54331caf6f4482a1d357cd1a99a4172021-09-01T00:00:00Zhttps://jurnal.ugm.ac.id/jtbb/article/view/65241https://doaj.org/toc/2540-9573https://doaj.org/toc/2540-9581The status of natural seedlings near localities in the Sundarbans Mangrove Forest was assessed through a stratified random sampling method to observe seedling composition and diversity, importance value index, family importance value, and species evenness. A total of 63 sample plots of 3,990 m2 area were surveyed in three natural and anthropogenic influenced salinity zones of Sundarbans. A total of 16,166 seedlings of 15 species under 12 families were found. Family Euphorbiaceae showed the highest (59.59%) family relative density and Rhizophoraceae presented the highest (20%) family relative diversity Index (FRDI). The maximum family importance value (FIV) showed by Euphorbiaceae (66.26) and the maximum importance value index (IVI) of species has been observed in Excoecaria agallocha (114.74). Excoecaria agallocha showed the highest relative density (59.6%) and relative abundance (39.87%) where the highest relative frequency (15.27%) was observed by Heritiera fomes. The mean stem density and species diversity index in the whole survey area was 2701 stem ha-1 and 0.0009 correspondingly. The Shannon-Wienner's diversity index was 1.52 where the maximum Shannon-Wienner's diversity index was 2.708. The Simpson's diversity index and Dominance of Simpson index were 0.38 and 0.62 with Simpson's reciprocal index 2.632. The Species evenness index, Menhinick’s, and Margalef's indices were 0.561, 0.118, and 1.445 respectively. The Species diversity index of the three salinity zones were 0.0017, 0.0029, and 0.0035 respectively. The Shannon-Wienner's diversity index of Low Salinity Zone (LSZ), Moderate Salinity Zone (MSZ), and Strong Salinity Zone (SSZ) were 0.887, 1.369, and 1.845 correspondingly where LSZ (0.632) showed the highest Simpson's diversity index follow ed by MSZ (0.394) and SSZ (0.21). The Species evenness index for LSZ, MSZ, and SSZ were 0.346, 0.505, and 0.742 where Menhinick’s Index were 0.148, 0.210, and 0.207 respectively. The analysis showed poor diversity indices and the area was dominated by few species with few families. The status is also reduced with increasing salinity.ASM Helal SiddiquiMd. Masudur RahmanMd. Najmus Sayadat PitolMd. Akramul IslamSk Md. Mehedi HasanUniversitas Gadjah Madaarticlediversity, evenness, family, importance value, richness, salinity, seedlingAgriculture (General)S1-972Plant cultureSB1-1110ENJournal of Tropical Biodiversity and Biotechnology, Vol 6, Iss 3 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	diversity, evenness, family, importance value, richness, salinity, seedling Agriculture (General) S1-972 Plant culture SB1-1110
spellingShingle	diversity, evenness, family, importance value, richness, salinity, seedling Agriculture (General) S1-972 Plant culture SB1-1110 ASM Helal Siddiqui Md. Masudur Rahman Md. Najmus Sayadat Pitol Md. Akramul Islam Sk Md. Mehedi Hasan Seedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh
description	The status of natural seedlings near localities in the Sundarbans Mangrove Forest was assessed through a stratified random sampling method to observe seedling composition and diversity, importance value index, family importance value, and species evenness. A total of 63 sample plots of 3,990 m2 area were surveyed in three natural and anthropogenic influenced salinity zones of Sundarbans. A total of 16,166 seedlings of 15 species under 12 families were found. Family Euphorbiaceae showed the highest (59.59%) family relative density and Rhizophoraceae presented the highest (20%) family relative diversity Index (FRDI). The maximum family importance value (FIV) showed by Euphorbiaceae (66.26) and the maximum importance value index (IVI) of species has been observed in Excoecaria agallocha (114.74). Excoecaria agallocha showed the highest relative density (59.6%) and relative abundance (39.87%) where the highest relative frequency (15.27%) was observed by Heritiera fomes. The mean stem density and species diversity index in the whole survey area was 2701 stem ha-1 and 0.0009 correspondingly. The Shannon-Wienner's diversity index was 1.52 where the maximum Shannon-Wienner's diversity index was 2.708. The Simpson's diversity index and Dominance of Simpson index were 0.38 and 0.62 with Simpson's reciprocal index 2.632. The Species evenness index, Menhinick’s, and Margalef's indices were 0.561, 0.118, and 1.445 respectively. The Species diversity index of the three salinity zones were 0.0017, 0.0029, and 0.0035 respectively. The Shannon-Wienner's diversity index of Low Salinity Zone (LSZ), Moderate Salinity Zone (MSZ), and Strong Salinity Zone (SSZ) were 0.887, 1.369, and 1.845 correspondingly where LSZ (0.632) showed the highest Simpson's diversity index follow ed by MSZ (0.394) and SSZ (0.21). The Species evenness index for LSZ, MSZ, and SSZ were 0.346, 0.505, and 0.742 where Menhinick’s Index were 0.148, 0.210, and 0.207 respectively. The analysis showed poor diversity indices and the area was dominated by few species with few families. The status is also reduced with increasing salinity.
format	article
author	ASM Helal Siddiqui Md. Masudur Rahman Md. Najmus Sayadat Pitol Md. Akramul Islam Sk Md. Mehedi Hasan
author_facet	ASM Helal Siddiqui Md. Masudur Rahman Md. Najmus Sayadat Pitol Md. Akramul Islam Sk Md. Mehedi Hasan
author_sort	ASM Helal Siddiqui
title	Seedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh
title_short	Seedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh
title_full	Seedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh
title_fullStr	Seedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh
title_full_unstemmed	Seedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh
title_sort	seedling diversity considerably changes near localities in three salinity zones of sundarbans mangrove forest, bangladesh
publisher	Universitas Gadjah Mada
publishDate	2021
url	https://doaj.org/article/da54331caf6f4482a1d357cd1a99a417
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Seedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh

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