scholarly journals Microbial degradation of the leachable and lignocellulosic components of leaves and wood from Rhizophora mangle in a tropical mangrove swamp

1985 ◽  
Vol 23 ◽  
pp. 221-230 ◽  
Author(s):  
R Benner ◽  
RE Hodson
Keyword(s):  
Microbial Degradation ◽  
Rhizophora Mangle ◽  
Mangrove Swamp

scholarly journals SPECIES CHARACTERIZATION IN RELATION TO EDAPHIC FACTORS IN A MANGROVE SWAMP FOREST: AN ORDINATION APPROACH

2020 ◽  
Vol 1 (1) ◽  
pp. 07-12
Author(s):  
Ita, R. E.
Keyword(s):  
Elaeis Guineensis ◽  
Salinity Gradient ◽  
Basal Area ◽  
Rhizophora Mangle ◽  
Principal Component ◽  
Plant Performance ◽  
Edaphic Factors ◽  
Swamp Forest ◽  
Mangrove Swamp ◽  
Nypa Fruticans

Species characterization in relation to edaphic factors was carried out in a mangrove swamp forest using ordination approach (PCA). Vegetation and soil were sampled systematically with a ten 50 x 10 m quadrat. In each quadrat, soil samples were obtained at the depths of 0 – 30 m while plants were identified to species level and their frequency, density, height, basal area and crown cover were determined. The floristic catalogue revealed a total of 10 species belonging to 8 families. Rhizophora mangle had the highest density value (120.41±16.04 st/ha) while Nypa fruticans, Rhizophora mangle and Paspalum vaginatum respectively had the highest frequency value (100%) Rhizophora mangle was the tallest species (11.50±1.37 m) as well as the species with the widest coverage (10.68±1.08 m2/ha). Elaeis guineensis had the largest (1.79±0.05 m2/ha) basal area (0.13±0.04 m2/ha). The use of PCA delineated three principal component axes (VS1, VS2 and VS3). The first, second and third axes were grouped as vegetation adaptation to salinity gradient, niche preference gradient and residual niche preference gradient, respectively. Positive associations showed nutrient levels that enhanced growth while negative relationships showed levels of nutrients that were limiting to plant performance. Conclusively, this study showed that the vegetation and soil factors in this mangrove swamp are highly interrelated, as shown by the magnitudes of correlations between them, hence, highlights that the interactions that govern mangrove abundance may produce different zonation patterns depending on the underlying environmental conditions.

Microbial degradation of Rhizophora mangle leaves immersed in the sea

1979 ◽  
Vol 9 (3) ◽  
pp. 281-IN4 ◽  
Author(s):  
A.M. Cundell ◽  
M.S. Brown ◽  
R. Stanford ◽  
R. Mitchell
Keyword(s):  
Microbial Degradation ◽  
Rhizophora Mangle

Role of SOD in the protection of Rhizophora mangle on gastric injury induced by ethanol, ischaemia-reperfusion and acetic acid in rats

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
FM de-Faria ◽  
A Luiz-Ferreira ◽  
ACA Almeida ◽  
V Barbastefano ◽  
MA Silva ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Rhizophora Mangle ◽  
Gastric Injury ◽  
Ischaemia Reperfusion

STUDI PERBANDINGAN EKSTRAK DAUN BAKAU (Rhizophora Mangle L) DAN EKSTRAK DAUN JAMBU BIJI (Psidium Guajava L) YANG DIGUNAKAN SEBAGAI BAHAN PENYAMAK ALAMI DALAM PERBUATAN TELUR PIDANG

2014 ◽  
Vol 3 (1) ◽  
pp. 61-70
Author(s):  
Adi Putra ◽  
Rifni Novitasari
Keyword(s):  
Rhizophora Mangle ◽  
Psidium Guajava

Penelitian tentang perbandingan ekstrak daun bakau (Rhizophora Mangle L) dan ekstrak daun jambu (Psidium Guajava L) yang digunakan sebagai bahan penyamak alami dalam pembuatan telur pindang telah dilakuakan selama Bulan Desember 2012 dengan tujuan untuk mengetahui perbandingan terbaik ekstrak daun bakau dan daun jambu biji yang digunakan sebagai bahan penyamak alami dalam pembuatan telur pindang.Penelitian ini dilakukan dengan menggunakan Rancang Acak Lengkap (RAL), dengan 4 perlakuan dan 3 x ulangan. Adapun perlakuan dalam penelitian ini adalah ; A0 (Ekstrak daun bakau 100%) ; A1 (Daun bakau 25% dan daun jambu biji 75%); A2 (Daun bakau 50% dan daun jambu biji 50%,); A3 (Daun bakau 75% dan daun jambu biji 25%)Berdasarkan hasil penelitian diketahui bahwa perlakuan A3 (Daun Bakau 75%: Daun Jambu Biji 25%) adalah perlakuan perbandingan terbaik dari hasil uji organoleptik dengan menggunakan uji hedonik dengan skor ; 3.65 untuk rasa, 3,70 untuk warna dan 3,85 untuk tekstur. dengan total mikroba pada hari ke-12 (3 x 106), kadar protein 30,24% dengan kadar air 74,58%

Total organic carbon and the preservation of organic-walled microfossils in Precambrian shale

Geology ◽  
2020 ◽  
Author(s):  
C.R. Woltz ◽  
S.M. Porter ◽  
H. Agić ◽  
C.M. Dehler ◽  
C.K. Junium ◽  
...  
Keyword(s):  
Species Richness ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Microbial Degradation ◽  
Sedimentation Rate ◽  
Surface Pattern ◽  
Causal Factors ◽  
Eukaryotic Diversity ◽  
High Concentrations ◽  
Fossil Preservation

Much of our understanding of early eukaryote diversity and paleoecology comes from the record of organic-walled microfossils in shale, yet the conditions controlling their preservation are not well understood. It has been suggested that high concentrations of total organic carbon (TOC) inhibit the preservation of organic fossils in shale, and although this idea is supported anecdotally, it has never been tested. Here we compared the presence, preservational quality, and assemblage diversity of organic-walled microfossils to TOC concentrations of 346 shale samples that span the late Paleoproterozoic to middle Neoproterozoic in age. We found that fossil-bearing samples have significantly lower median TOC values (0.32 wt%, n = 189) than those containing no fossils (0.72 wt%, n = 157). Preservational quality, measured by the loss of surface pattern, density of pitting, and deterioration of wall margin, decreases as TOC increases. Species richness negatively correlates with TOC within the ca. 750 Ma Chuar Group (Arizona, USA), but no relationship is observed in other units. These results support the hypothesis that high TOC content either decreases the preservational quality or inhibits the preservation of organic-walled microfossils altogether. However, it is also possible that other causal factors, including sedimentation rate and microbial degradation, account for the correlation between fossil preservation and TOC. We expect that as TOC varies in space and time, so too does the probability of finding well-preserved fossils. A compilation of 13,940 TOC values spanning Earth history suggests significantly higher median TOC levels in Mesoproterozoic versus Neoproterozoic shale, potentially biasing the interpreted pattern of increased eukaryotic diversity in the Tonian.

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