scholarly journals Assessing the impact of static and fluctuating ocean acidification on the behavior of Amphiprion percula

2021 ◽  
Author(s):  
Matthew A. Vaughan ◽  
Danielle L. Dixson
Keyword(s):  
Coral Reef ◽  
Ocean Acidification ◽  
Reef Fishes ◽  
Amphiprion Percula ◽  
Behavioral Abnormalities ◽  
Negative Impacts ◽  
Ground Truthing ◽  
Chemosensory Behavior ◽  
The Impact

AbstractCoral reef organisms are exposed to both an increasing magnitude of pCO2, and natural fluctuations on a diel scale. For coral reef fishes, one of the most profound effects of ocean acidification is the impact on ecologically important behaviors. Previous behavioral research has primarily been conducted under static pCO2 conditions and have recently come under criticism. Recent studies have provided evidence that the negative impacts on behavior may be reduced under more environmentally realistic, fluctuating conditions. We investigated the impact of both present and future day, static (500 and 1000 μatm) and diel fluctuating (500 ± 200 and 1000 ± 200 μatm) pCO2 on the lateralization and chemosensory behavior of juvenile anemonefish, Amphiprion percula. Our static experimental comparisons support previous findings that under elevated pCO2, fish become un-lateralized and lose the ability to discriminate olfactory cues. Diel-fluctuating pCO2 may aid in mitigating the severity of some behavioral abnormalities such as the chemosensory response, where a preference for predator cues was significantly reduced under a future diel-fluctuating pCO2 regime. This research aids in ground truthing earlier findings and contributes to our growing knowledge of the role of fluctuating conditions.

scholarly journals Diel CO2 fluctuations alter the molecular response of coral reef fishes to ocean acidification conditions

2021 ◽  
Author(s):  
Celia Schunter ◽  
Michael D Jarrold ◽  
Philip L Munday ◽  
Timothy Ravasi
Keyword(s):  
Coral Reef ◽  
Ocean Acidification ◽  
Brain Activity ◽  
Reef Fishes ◽  
Coral Reef Fishes ◽  
Molecular Response ◽  
Transcriptional Program ◽  
Amphiprion Percula ◽  
Underlying Mechanisms ◽  
The Brain

Environmental CO2 variation can modify the responses of marine organisms to ocean acidification, yet the underlying mechanisms for this effect remain unclear. On coral reefs, environmental CO2 fluctuates on a regular day-night cycle. Effects of future ocean acidification on coral reef fishes might therefore depend on their response to this diel cycle of CO2. To evaluate the effects on the brain molecular response, we exposed two common reef fishes (Acanthochromis polyacanthus and Amphiprion percula) to two projected future CO2 levels (750 and 1,000 microatmospheres) under both stable and diel fluctuating conditions. We found a common signature to stable elevated pCO2 for both species, which included the downregulation of immediate early genes, indicating lower brain activity. The transcriptional program was more strongly affected by higher average CO2 in a stable treatment than for fluctuating treatments, however, the largest difference in molecular response was between stable and fluctuating CO2 treatments. This indicates that a response to a change in environmental CO2 conditions is different for organisms living in a fluctuating than in stable environments. The differential regulation was related to steroid hormones and circadian rhythm (CR). Both species exhibited a marked difference in the expression of CR genes among CO2 treatments, possibly accommodating a more flexible adaptive approach to acid-base control, which could explain reduced impairment. Our results suggest that environmental CO2 fluctuations might enable reef fishes to phase shift their clocks and anticipate CO2 changes, thereby avoiding impairments and more successfully adjust to ocean acidification conditions.

The Risk of Water Erosion on the Foothills of the Middle High Atlas (Morocco): Tagueleft Basin Case Study : خطر التعرية المائية على السفوح بالأطلس الكبير الأوسط (المغرب): دراسة حالة حوض تاكلفت

2020 ◽  
Vol 4 (3) ◽  
Author(s):  
Rizki Mohamed
Keyword(s):  
Land Degradation ◽  
Local Development ◽  
Remote Sensing Data ◽  
Potential Method ◽  
Water Erosion ◽  
High Atlas ◽  
Negative Impacts ◽  
The Impact

The Tagueleft basin is geographically located in the northern edges of the Middle High Atlas, which is a geomorphological fragile area. The impact of human activity has accelerated water erosion in this mountains area. This is reflected in dynamic and unstable foothills, a decrease in forests density and degradation in the production of the land. On the other hand, land degradation due to human overexploitation of natural resources has increased land degradation in the area. The interest in the risk of erosion on the foothills in the area under study comes in the context of our contribution to clarify the role of geomatical and geomorphological approaches in explaining and identifying the mechanisms responsible for current foothills dynamism through water erosion and its negative impacts on the environment and local development. The aim of the study was to use the EPM (Erosion Potential Méthod) which is formulated by Slobodan Gavrilovic for erosion in mountainous areas and to test the reliability of its results based on fieldwork and remote sensing data. The results of the erosion assessment and its quantification by applying the coefficient (W) for the theoretical model in the area under study have shown that erosion is very important and it touches on wide areas as it appears through the domain classification of the distribution erosion in Tagueleft basin.

scholarly journals A short history of ocean acidification science in the 20th century: a chemist's view

2013 ◽  
Vol 10 (11) ◽  
pp. 7411-7422 ◽  
Author(s):  
P. G. Brewer
Keyword(s):  
Ocean Acidification ◽  
20Th Century ◽  
Fossil Fuel ◽  
Trade Offs ◽  
History Of ◽  
Chemical Knowledge ◽  
The Creation ◽  
Ph Scale ◽  
The Impact

Abstract. This review covers the development of ocean acidification science, with an emphasis on the creation of ocean chemical knowledge, through the course of the 20th century. This begins with the creation of the pH scale by Sørensen in 1909 and ends with the widespread knowledge of the impact of the "High CO2 Ocean" by then well underway as the trajectory along the IPCC scenario pathways continues. By mid-century the massive role of the ocean in absorbing fossil fuel CO2 was known to specialists, but not appreciated by the greater scientific community. By the end of the century the trade-offs between the beneficial role of the ocean in absorbing some 90% of all heat created, and the accumulation of some 50% of all fossil fuel CO2 emitted, and the impacts on marine life were becoming more clear. This paper documents the evolution of knowledge throughout this period.

The Role of Family in Youth Opioid Misuse: A Literature Review

2019 ◽  
Vol 27 (4) ◽  
pp. 429-442 ◽  
Author(s):  
Lovdeep Kaur ◽  
Eman Tadros ◽  
Rikki Patton
Keyword(s):  
Literature Review ◽  
Opioid Misuse ◽  
Opioid Use ◽  
Treatment Development ◽  
Factors Affecting ◽  
Relative Paucity ◽  
Full Text Review ◽  
Negative Impacts ◽  
The Impact

Objective: With the opioid epidemic reaching declared a public health emergency in recent years, a synthesis of recent knowledge outlining the impact of opioid use disorders on youth and families is needed. To this aim, this exploratory literature review examined how the role of family is discussed in research on youth opioid misuse, with the goal of acting as a springboard for further research and treatment development that could mitigate the negative impacts opioids are having on families and youth. Method: Peer-reviewed journal articles between 2008 and 2018 were accessed through PsycINFO in March 2018. A total of 279 unduplicated articles were identified through the search. Upon abstract and full-text review, a total of 21 articles met criteria for inclusion in the systematic review. Findings: Overall, the role of the family in adolescent opioid misuse was not commonly discussed in the literature, with 21 of 279 (7.5%) of articles meeting inclusion criteria for the current study. In the included articles, the following major themes were identified: (1) family factors affecting adolescent opioid misuse behavior and (2) family’s role in treatment of adolescent opioid misuse. Conclusions: The review evidences there is a relative paucity of literature on relational variables and youth opioid misuse. More practice-based scholarship, as well as more rigorous clinical research, is needed to inform future steps for clinical processes, policy, and research.

scholarly journals Does Inflation Reduce Air Pollution? Evidence from Indonesia

2021 ◽  
Vol 317 ◽  
pp. 01068
Author(s):  
Andryan Setyadharma ◽  
Shanty Oktavilia ◽  
Indah Fajarini Sri Wahyuningrum ◽  
Sri Indah Nikensari ◽  
Arumawan Mei Saputra
Keyword(s):  
Air Pollution ◽  
Positive Impact ◽  
Methodological Approach ◽  
Long Run ◽  
High Inflation ◽  
Positive Rate ◽  
Short Run ◽  
Negative Impacts ◽  
The Impact

Inflation could likely cause devastating impacts where high inflation can harmful economic and social circumstances. However, only limited studies try to find the impact of inflation on the quality of air. The aim of this study is to investigate the empirical linkage between inflation and air pollution in Indonesia covering the period of 1981 until 2017 by using an error correction model (ECM) methodological approach. The result of study suggests that in the short run, higher inflation is causing the lower level of air pollution. Similarly, in the long run, higher inflation is also affecting the lower level of air pollution. While there are a lot of negative impacts of inflation in Indonesia, the finding in this study indicates a positive impact of inflation in Indonesia, which is higher inflation can reduce the air pollution. The results seem contradict with the target of central bank of Indonesia to have a low but positive rate of inflation. Based on the findings, the study suggests the policymakers in Indonesia to support a robust role of inflation stability in achieving targets related to the reduction of air pollution.

scholarly journals DIVERSITY OF REEF FISH FUNGSIONAL GROUPS IN TERMS OF CORAL REEF RESILIENCES

2017 ◽  
Vol 22 (2) ◽  
pp. 109
Author(s):  
Isa Nagib Edrus ◽  
Muhammad Abrar Abrar
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Functional Groups ◽  
Data Gathering ◽  
Reef Fishes ◽  
Fish Diversity ◽  
Infrastructure Development ◽  
Management Actions ◽  
Resilience Indicators

Infrastructure development in the particular sites of  Seribu Islands as well as those in main land of Jakarta City increased with coastal population this phenomenon is likely to increase the effects to the adjacent coral waters of Seribu Islands.  Chemical pollutants, sedimentation, and domestic wastes are the common impact and threatening, the survival of coral reef ecosystem. Coral reef resiliences naturaly remained on their processes under many influences of supporting factors. One of the major factor is the role of reef fish functional groups on controling algae growth to recolonize coral juveniles. The  aim of this study to obtain data of a herbivory and other fish functional groups of reef fishes in the Pari Islands that are resilience indicators, or that may indicate the effectiveness of management actions. A conventional scientific approach on fish diversity and abundance data gathering was conducted by the underwater visual cencus. Diversity values of the reef fish functional groups, such as the abundance of individual fish including species, were collected and tabulated by classes and weighted as a baseline to understand the resilience of coral reed based on Obura and Grimsditch (2009) techniques. The results succesfully identified several fish functional groups such as harbivores (21 species), carnivores (13 species) and fish indicator (5 species) occurred in the area. Regarding the aspects of fish density and its diversity, especially herbivorous fish functional group, were presumably in the state of rarely available to support the coral reef resiliences. Resilience indices ranged from 1 (low level) to 3 (moderate level) and averages of the quality levels ranged from 227 to 674. These levels were inadequate to support coral reef recolonization.

Bioboard

2020 ◽  
Vol 24 (04) ◽  
pp. 54-65
Keyword(s):  
Coral Reef ◽  
Muscular Dystrophy ◽  
Reef Fishes ◽  
Asia Pacific ◽  
Antibody Drug Conjugate ◽  
Reverse Conversion ◽  
The World ◽  
New Research ◽  
The Impact ◽  
Antibody Drug

The following topics are under this section: ASIA-PACIFIC — Identification of Therapeutic Points for Genetically Diverse and Fatal Leukaemia ASIA-PACIFIC — Novel Microfluidic Processes for Drug Development ASIA-PACIFIC — Development of Anti-Microbial Coating against COVID-19 ASIA-PACIFIC — Partnership between Arcturus Therapeutics and Duke-NUS Medical School to develop COVID-19 Vaccine ASIA-PACIFIC — Nanoscopic Insights to Proteins against Huntington’s Disease ASIA-PACIFIC — Unravelling the Impact of Marine Heatwave on Coral Reef Fishes ASIA-PACIFIC — Regulation of Plant Pores by MicroRNAs ASIA-PACIFIC — Discovering Clues to Longevity in Our Genome ASIA-PACIFIC — Repurposing Nature’s Products to Viable Materials ASIA-PACIFIC — Reverse Conversion of Oestrogens to Androgens REST OF THE WORLD — HER2-targeted Antibody Drug Conjugate Shows Promise in Patients with Non-Breast-Gastric Cancers REST OF THE WORLD — New Research finds Teeth as a Biological Archive REST OF THE WORLD — Finding Treatment for Muscular Dystrophy using CRISPR

34 Warming Waters and Souring Seas: Climate Change and Ocean Acidification

2015 ◽  
Author(s):  
Stephens Tim
Keyword(s):  
Climate Change ◽  
Ocean Acidification ◽  
Global Climate ◽  
Law Of The Sea ◽  
Climate Mitigation ◽  
Sea Levels ◽  
Mitigation And Adaptation ◽  
Rising Sea Levels ◽  
The Impact

This chapter examines the impact of climate change and ocean acidification on the oceans and their implications for the international law of the sea. In particular, it assesses the implications of rising sea levels for territorial sea baselines, the seawards extent of maritime zones, and maritime boundaries. It also considers the restrictions placed by the UN Nations Convention on the Law of the Sea (LOSC) upon States in pursuing climate mitigation and adaptation policies, such as attempts to ‘engineer’ the global climate by artificially enhancing the capacity of the oceans to draw CO2 from the atmosphere. The chapter analyzes the role of the LOSC, alongside other treaty regimes, in addressing the serious threat of ocean acidification.

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