Rhizospheric Diversity of Cyanobacteria and Their Significance in Tropical Ecosystem

2021 ◽  
pp. 39-50
Author(s):  
Samadhan Yuvraj Bagul ◽  
Ritu Vishwakarma ◽  
Shaloo Verma ◽  
Hillol Chakdar ◽  
G. S. Bandeppa
Keyword(s):  
Tropical Ecosystem

Nutrient and temperature constraints on primary production and net phytoplankton growth in a tropical ecosystem

2021 ◽  
Author(s):  
Daffne C. López‐Sandoval ◽  
Carlos M. Duarte ◽  
Susana Agustí
Keyword(s):  
Primary Production ◽  
Phytoplankton Growth ◽  
Tropical Ecosystem ◽  
Net Phytoplankton

Monoxenic Culture of the Intraradical Forms of Glomus sp. Isolated from a Tropical Ecosystem: A Proposed Methodology for Germplasm Collection

Mycologia ◽  
1998 ◽  
Vol 90 (4) ◽  
pp. 579 ◽  
Author(s):  
Stephane Declerck ◽  
Desire G. Strullu ◽  
Christian Plenchette
Keyword(s):  
Germplasm Collection ◽  
Monoxenic Culture ◽  
Tropical Ecosystem ◽  
Glomus Sp

scholarly journals Community Structure of Gastrpods in Mokupa Beach, Sub-district of Tobariri,Minahasa Regency, North Sulawesi Province

2015 ◽  
Vol 3 (1) ◽  
pp. 22
Author(s):  
Alinaung F. Firgonitha ◽  
Anneke V. Lohoo ◽  
Alex D. Kambey
Keyword(s):  
Diversity Index ◽  
High Tide ◽  
Ocean Basin ◽  
Food Chains ◽  
Seagrass Bed ◽  
Species Diversity Index ◽  
Tropical Ecosystem ◽  
Filter Feeder ◽  
Edge Cover ◽  
North Sulawesi

Ecologically intertidal mollusk has important role in the food chains. As a filter feeder, mollusk is also known as a food source for other marine organisms. The intertidal zone is known as the smallest area in the ocean basin (Nybakken, 1992). This zone is a narrow edge cover only few square meters and position between low tide mark (LTM) and high tide mark (HTM). The study was conducted in Mokupa beach waters, Tombariri sub-district, Minahasa Regency. Coastal area of Mokupa village represent typical tropical ecosystem such as coral reef, seagrass bed and mangrove belt. As many as 45 species in 134 total individuals were recorded during the study. The density of gastropods collected is 4.4667 individual/m2 while density for gastropods species Littoraria scabra Linne was 0.4000 individual/m2 and in term of relative density is 9.834 % and thus considered the highest. Species diversity index of this species is H’ = 2.37594. Keywords: mollusk, diversity, dominance   A B S T R A K   Secara ekologis Moluska yang menempati daerah intertidal memiliki peranan yang besar kaitannya dengan rantai makanan. Karena di samping sebagai filter feeder, moluska juga merupakan makanan bagi biota lainnya. Zona intertidal (pasang-surut) merupakan daerah terkecil dari semua daerah yang terdapat di samudera dunia (Nybakken, 1992). Zona ini merupakan pinggiran yang sempit sekali, hanya beberapa meter luasnya, terletak di antara air pasang tinggi dan air surut rendah. Penelitian ini dilaksanakan di perairan pantai Mokupa Kecamatan Tombariri Kabupaten Minahasa. Daerah pantai Desa Mokupa merupakan daerah yang lokasinya terdapat ekosistem yang khas di daerah tropis yaitu terumbu karang, padang lamun, dan hutan mangrove. Diperoleh sebanyak 45 spesies dan berjumlah 134 individu. Kepadatan rata-rata organisme Gastropoda diperoleh 4,4667 indv/m2 , dengan  kepadatan spesies tertinggi 0,4000 indv/m2 (Littoraria scabra Linne), dengan Kepadatan relative  adalah 9,834 %.Keanekaragaman spesies diperoleh nilai (H’= 2.37594)   Kata Kunci : Komunitas, keanekaragaman, dominasi 1Mahasiswa Program Studi MSP FPIK-UNSRAT 2Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi

scholarly journals Lesser-known ethnic leafy vegetables Talinum paniculatum grown at tropical ecosystem: Morphological traits and non-destructive estimation of total leaf area per branch

2021 ◽  
Vol 22 (10) ◽  
Author(s):  
Benyamin Lakitan ◽  
Kartika Kartika ◽  
Laily Ilman Widuri ◽  
Erna Siaga ◽  
Lya Nailatul Fadilah
Keyword(s):  
Regression Model ◽  
Leaf Area ◽  
Morphological Traits ◽  
Leafy Vegetables ◽  
Stem Cuttings ◽  
Total Leaf Area ◽  
Tropical Ecosystem ◽  
Total Leaf ◽  
Tropical Conditions ◽  
Non Destructive

Abstract. Lakitan B, Kartika K, Widuri LI, Siaga E, Fadilah LN. 2021. Lesser-known ethnic leafy vegetables Talinum paniculatum grown at tropical ecosystem: Morphological traits and non-destructive estimation of total leaf area per branch. Biodiversitas 22: 4487-4495. Talinum paniculatum known as Java ginseng is an ethnic vegetable in Indonesia that has also been utilized as a medical plant. Young leaves are the primary economic part of T. paniculatum, which can be eaten fresh or cooked. This study was focused on characterizing morphological traits of T. panicultaum and developing a non-destructive yet accurate and reliable model for predicting total area per leaf cluster on each elongated branch per flush growth cycle. The non-destructive approach allows frequent and timely measurements. In addition, the developed model can be used as guidance for deciding the time to harvest for optimum yield. Results indicated that T. paniculatum flourished rapidly under wet tropical conditions, especially if they were propagated using stem cuttings. The plants produced more than 50 branches and more than 800 leaves, or on average produced more than 15 leaves per branch at the age of nine weeks after planting (WAP). The zero-intercept linear model using a combination of two traits of length x width (LW) as a predictor was accurate and reliable for predicting a single leaf area (R2 = 0.997). Meanwhile, the estimation of total area per leaf cluster was more accurate if three traits, i.e., number of leaves, the longest leaf, and the widest leaf in each cluster were used as predictors with the zero-intercept linear regression model (R2 = 0.984). However, the use of a single trait of length (L) and width (W) of the largest leaf within each cluster as a predictor in the power regression model exhibited moderately accurate prediction at the R2 = 0.883 and 0.724, respectively.

scholarly journals The Role of Metals and their Fractions in the Bacanga River Estuary: an Example of the Anthropogenic Interference in a Tropical Ecosystem

2015 ◽  
Vol 7 (4) ◽  
pp. 1130-1144
Author(s):  
Gilmar S. da Silva ◽  
Luciana B. Côrrea ◽  
Aldalea L. B. Marques ◽  
Edmar P. Marques ◽  
Maria de L. F. Nunes ◽  
...  
Keyword(s):  
River Estuary ◽  
Tropical Ecosystem

Tropical Ecosystem Structure and Function

1974 ◽  
pp. 67-111 ◽  
Author(s):  
Ariel Lugo ◽  
Mark Brinson ◽  
Maximo Cerame Vivas ◽  
Clayton Gist ◽  
Robert Inger ◽  
...  
Keyword(s):  
Structure And Function ◽  
Ecosystem Structure ◽  
Tropical Ecosystem ◽  
And Function ◽  
Ecosystem Structure And Function

Biodegradation Potential of Two Rhodococcus Strains Capable of Utilizing Aniline as Carbon Source in a Tropical Ecosystem

2008 ◽  
Vol 3 (2) ◽  
pp. 99-104 ◽  
Author(s):  
C. Nwinyi Obinna . ◽  
Nwodo-Chinedu Shalom . ◽  
O. Amund Olukayode .
Keyword(s):  
Carbon Source ◽  
Tropical Ecosystem

Effect of Colony Collapse Disorder on Honeybees

2019 ◽  
Vol 16 (10) ◽  
pp. 4149-4152
Author(s):  
Deepali Gupta ◽  
Harsha Chauhan ◽  
Sheifali Gupta ◽  
Rupesh Gupta
Keyword(s):  
Electromagnetic Radiation ◽  
Research Paper ◽  
Vital Role ◽  
Portable Devices ◽  
Colony Collapse Disorder ◽  
Tropical Ecosystem ◽  
Colony Collapse ◽  
Environmental Activities

Bees play a vital role in saving environment as they are the paramount agricultural pollinators and are the prior pollinators in the tropical ecosystem. Now a days, bees are in trouble as they are suffering from a mysterious condition known as colony collapse disorder in which honeybees leave their hives but fail to return back there because of the environmental activities done by the human. It caused a tremendous drop in the number of bees around the globe. The main reasons behind it are massive use of pesticides in agriculture, trading of bees by the humans and electromagnetic radiation emitted by the portable devices. In this research paper, importance of honeybees and the reason behind their disappearance has been studied.

Organic Waste Management and Integrated Bio-Cycle Farming System for Sustainable Development in Tropical Ecosystem

2020 ◽  
Vol 898 ◽  
pp. 45-50
Author(s):  
Cahyono Agus ◽  
Pita Asih Bekti Cahyanti ◽  
Bambang Suhartanto ◽  
Pipit Noviyani
Keyword(s):  
Health Management ◽  
Biomass Productivity ◽  
Animal Husbandry ◽  
Farming System ◽  
Integrated System ◽  
Good Prospect ◽  
Tropical Ecosystem ◽  
Agriculture Sector ◽  
Key Characteristics

The tropical ecosystem had high biomass productivity but still less in economic values. Integrated Bio-cycle Farming System (IBFS) was an alternative system that harmoniously combines agricultural sectors (agriculture, forestry, animal husbandry, fishery, plantation estate, horticulture) and non-agricultural aspects (industry, household, infrastructure, the marketplace) on integrated ecological management. The key characteristics of IBFS developed in UGM University Farm were (i) an integration of agriculture and non-agriculture sector, (ii) value of environment, esthetics and economics, (iii) rotation and diversity of plants, (iv) artificial and functional biotechnology, (v) management of closed organic cycle, (vi) ecosystem health management, (vii) agropolitan concept, (viii) specific management of plant and (ix) holistic and integrated system. The management of cycle of energy, organic matter and carbon, water, nutrient, production, crop, money conducted through 9R (reuse, reduce, recycle, refill, replace, repair, replant, rebuild, reward) to obtain optimal benefits for global environment and livelihood. The system had a sustainable multifunction and multi-product (food, feed, fuel, fiber, fertilizer, biopharma, water, energy, oxygen, edutainment, eco-tourism). They would meet the expected basic need for daily-, monthly-, yearly- and decade’s income at short-, medium- and long- term periods. IBFS was a good prospect for sustainable economic, environmental, and socio-culture aspects.

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