scholarly journals Environmental Factors and Cultural Measures Affecting The Nitrate Content In Spinach

Author(s):  
T. Breimer
2018 ◽  
Vol 16 (1) ◽  
pp. 68
Author(s):  
Anik Prihatin ◽  
Prabang Setyono ◽  
Sunarto Sunarto

ABSTRAKEkosistem mangrove merupakan suatu interaksi yang terjadi antara tanaman – tanaman mangrove dengan faktor lingkungan perairan mangrove sehingga dapat menyebabkan terjadinya kesuburan perairan dan sebagai tempat mencari makan alami bagi biota – biota perairan. Tujuan penelitian ini adalah untuk mengetahui sebaran klorofil-a, nitrat dan fosfat serta plankton pada ekosistem mangrove yang berguna untuk kelestarian hidup biota – biota perairan Mangrove. Penelitian ini dilaksanakan bulan Oktober – November 2017 di Mangrove Tapak Tugurejo Semarang. Hasil penelitian ini didapatkan kandungan klorofil a rata – rata 0,165 mg/l, kandungan nitrat rata – rata 2,188 mg/l dan kandungan fosfat rata – rata 0,045 mg/l. Kelimpahan fitoplankton ditemukan sebanyak 23 spesies dan zooplankton ditemukan sebanyak 5 spesies. Berdasarkan status indeks trofik perairan Mangrove Tapak Tugurejo Semarang termasuk dalam kategori perairan mesotrofik, yakni unsur hara dan nutrien dalam perairan mangrove kurang tersedia banyak atau sedang dan belum tercemar. Kondisi kesuburan ekosistem mangrove terpantau cukup baik bila dibandingkan dengan kandungan – kandungan unsur hara, klorofil a dan plankton yang melimpah di perairan penelitian, sehingga memungkinkan banyak terdapat kehidupan biota – bioata perairan. Kesimpulan dari penelitian ini adalah kandungan unsur hara (nitrat dan fosfat) dan klorofil a serta plankton diperairan mangrove sangat mempengaruhi kesuburan ekosistem perairan, serta plankton yang mendominasi tempat penelitian ialah dari kelas Baccilariophyceae sebanyak 21 spesies.Kata kunci: Status trofik, Plankton, Ekosistem Mangrove,  Mangrove Tapak Tugurejo Semarang.ABSTRACTMangrove ecosystem is an interaction that occurs between mangrove plants with environmental factors of mangrove waters that can cause the occurrence of water fertility and as a place of natural foraging for aquatic biota. The purpose of this research is to know the distribution of chlorophyll a, nitrate and phosphate and plankton in mangrove ecosystem which is useful for the preservation of biota life of Mangrove waters. This research was conducted in October - November 2017 at Tapak Mangrove Tugurejo Semarang. The results of this study obtained an average chlorophyll-1 content of 0.165 mg / l, an average nitrate content of 2.188 mg / l and an average phosphate content of 0.045 mg / l. Abundance of phytoplankton found as many as 23 species and zooplankton found as many as 5 species. Based on the trophic index status of Mangrove waters Tapak Tugurejo Semarang included in the category of mesotrophic waters, the nutrients and nutrients in the mangrove waters are less available or moderate and not contaminated. The condition of mangrove ecosystem fertility is observed quite well when compared with nutrient content, chlorophyll-a and plankton abundant in research waters, thus allowing many life biota - bioata waters. The conclusion of this research is the content of nutrients (nitrate and phosphate) and chlorophyll a and plankton in mangrove waters greatly affect the fertility of aquatic ecosystems, and the plankton that dominate the research site is from the Baccilariophyceae class of 21 species.Keywords : Trophic Status, Plankton, Mangrove Ecosystem, Mangrove Tapak Tugurejo SemarangCitation: Prihatin, A, Setyono, P dan Sunarto (2018). Sebaran Klorofil-a, Nitrat, Fosfat dan Plankton Sebagai Indikator Kesuburan Ekosistem di Mangrove Tapak Tugurejo Semarang. Jurnal Ilmu Lingkungan, 16(1), 68-77, doi:10.14710/jil.16.1.68-77


Foods ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 732
Author(s):  
Zhonghua Bian ◽  
Yu Wang ◽  
Xiaoyan Zhang ◽  
Tao Li ◽  
Steven Grundy ◽  
...  

Excessive accumulation of nitrates in vegetables is a common issue that poses a potential threat to human health. The absorption, translocation, and assimilation of nitrates in vegetables are tightly regulated by the interaction of internal cues (expression of related genes and enzyme activities) and external environmental factors. In addition to global food security, food nutritional quality is recognized as being of strategic importance by most governments and other agencies. Therefore, the identification and development of sustainable, innovative, and inexpensive approaches for increasing vegetable production and concomitantly reducing nitrate concentration are extremely important. Under controlled environmental conditions, optimal fertilizer/nutrient element management and environmental regulation play vital roles in producing vegetables with low nitrate content. In this review, we present some of the recent findings concerning the effects of environmental factors (e.g., light, temperature, and CO2) and fertilizer/nutrient solution management strategies on nitrate reduction in vegetables grown under controlled environments and discuss the possible molecular mechanisms. We also highlight several perspectives for future research to optimize the yield and nutrition quality of leafy vegetables grown in controlled environments.


2020 ◽  
Vol 9 (3) ◽  
pp. 303-310
Author(s):  
Rachmantino Wibowo ◽  
Nur Taufiq-SPJ ◽  
Ita Riniatsih

ABSTRAK: Taman Nasional Karimunjawa merupakan daerah yang memiliki ekosistem laut yang masih lengkap dan asri. Ekosistem Lamun merupakan salah satu ekosistem laut yang memiliki banyak peranan bagi kehidupan di laut. Penelitian ini bertujuan untuk mengetahui hubungan kandungan nutrien nitrat dan fosfat pada substrat sedimen terhadap kondisi ekosistem lamun di Pulau Sintok dan Pulau Bengkoang Lamun merupakan organisme yang hidupnya sangat dipengaruhi oleh faktor-faktor lingkungan. Kandungan nutrien substrat merupakan salah satu faktor lingkungan yang mampu mempengaruhi kehidupan lamun. Nitrat dan fosfat merupakan nutrien esensial yang sangat penting untuk menunjang pertumbuhan dan perkembangan lamun. Penelitian ini bertujuan untuk mengetahui hubungan antara kandungan nutrien sedimen terhadap kerapatan lamun di Pulau Sintok dan Pulau Bengkoang, Karimunjawa. Perbedaan jumlah nitrat dan fosfat di lingkungan diduga dapat mempengaruhi kondisi lamun di Pulau Sintok dan Bengkoang. Metode pengamatan kondisi ekosistem lamun menggunakan metode seagrasswatch. Metode analisis statistika yang digunakan adalah analisis pearson-correlation. Analisis hubungan kandungan nitrat dan fosfat terhadap kerapatan lamun di Pulau Sintok didapatkan nilai korelasi pada nitrat sebesar -0,425 dan fosfat sebesar -0,422. Analisis hubungan di Pulau Bengkoang didapatkan nilai korelasi pada nitrat sebesar -0,933 dan fosfat sebesar 0,849. Dari penellitian ini dapat diambil kesimpulan bahwa nutrien nitrat dan fosfat sedimen di Pulau Sintok memiliki arah hubungan negatif dengan kekuatan hubungan yang cukup terhadap kerapatan lamun. Kandungan nitrat sedimen di Pulau Bengkoang memiliki hubungan sangat kuat negatif, sedangkan kandungan fosfat sedimen memiliki hubungan sangat kuat positif terhadap kerapatan lamun. ABSTRACT: Karimunjawa National Park is an area that has a complete and beautiful marine ecosystem. Seagrass Ecosystem is one of the marine ecosystems that has many roles for life at sea. The aim of this study was to understand correlation of the nutrient (Nitrate Phosphate) in the sediment to sea-grass ecosystem at Sintok and Bengkoang Islands. Sea-grass is an organism whose life is strongly influenced by environmental factors. The nutrient content of the substrate is one of the environmental factors that can affect the life of seagrass. Nitrate and phosphate are essential nutrients that are very important to support the growth and development of seagrass. This study aims to determine the correlation between sediment nutrient content on the density of seagrass in Sintok Island and Bengkoang Island, Karimunjawa. The difference in the amount of nitrate and phosphate in the environment is thought to affect the condition of seagrass in Sintok and Bengkoang Islands. The method of observing seagrass ecosystem condition uses seagrasswatch method. The statistical analysis method used is the Pearson-correlation analysis. Analysis of the correlation of nitrate and phosphate content to the density of seagrass on Sintok Island obtained a correlation value of nitrate of -0.425 and phosphate of -0.422. Analysis of the correlation on Bengkoang Island obtained a correlation value of nitrate of -0.933 and phosphate of 0.849. This study can be concluded that the nutrient nitrate and phosphate sediment on Sintok Island has a negative correlation with an adequate strength of correlation to seagrass density. The sediment nitrate content in Bengkoang Island has a very strong negative correlaation, while the sediment phosphate content has a very strong positive correlation to the density of seagrass.


2019 ◽  
Vol 42 ◽  
Author(s):  
Nicole M. Baran

AbstractReductionist thinking in neuroscience is manifest in the widespread use of animal models of neuropsychiatric disorders. Broader investigations of diverse behaviors in non-model organisms and longer-term study of the mechanisms of plasticity will yield fundamental insights into the neurobiological, developmental, genetic, and environmental factors contributing to the “massively multifactorial system networks” which go awry in mental disorders.


2020 ◽  
Vol 134 (18) ◽  
pp. 2447-2451
Author(s):  
Anissa Viveiros ◽  
Gavin Y. Oudit

Abstract The global prevalence of obesity has been rising at an alarming rate, accompanied by an increase in both childhood and maternal obesity. The concept of metabolic programming is highly topical, and in this context, describes a predisposition of offspring of obese mothers to the development of obesity independent of environmental factors. Research published in this issue of Clinical Science conducted by Litzenburger and colleagues (Clin. Sci. (Lond.) (2020) 134, 921–939) have identified sex-dependent differences in metabolic programming and identify putative signaling pathways involved in the differential phenotype of adipose tissue between males and females. Delineating the distinction between metabolically healthy and unhealthy obesity is a topic of emerging interest, and the precise nature of adipocytes are key to pathogenesis, independent of adipose tissue volume.


2016 ◽  
Vol 1 (12) ◽  
pp. 83-93 ◽  
Author(s):  
Mary Blake Huer ◽  
Travis T. Threats

The World Health Organization's (WHO's) 2001 International Classification of Functioning Disability and Health (ICF) has as one of its central tenets the full inclusion of persons with disabilities in society. It acknowledges the need for medical and rehabilitation intervention in its biopscychosocial framework. However, the WHO realizes that society must do its part to facilitate this full participation and empowerment. Persons with complex communication needs (PWCCN) often need augmentative and alternative communication (AAC) in order to express themselves. However, in order to access and successfully use AAC, PWCCN need access to the necessary AAC devices and services, as well as a willing society to interact with them as full contributing members of society. The factors outside of a person's specific physical and/or cognitive functional limitations are addressed in the ICF via the Personal and Environmental Factors. Personal Factors include the individual's personality traits, lifestyle, experiences, social/educational/professional background, race, gender, and age. Environmental Factors include community support systems, social service agencies, governments, social networks, and those persons that interact with the PWCCN. This article addresses the sociopolitical influences on PWCCN and their functioning from a human rights perspective. The necessary introspective role of speech-language pathologists in this process is explored.


2004 ◽  
Vol 171 (4S) ◽  
pp. 99-99
Author(s):  
Vincenzo Serretta ◽  
Vincenzo Altieri ◽  
Giuseppe Morgia ◽  
Rosalinda Allegro ◽  
Alessandra Di Lallo ◽  
...  

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