scholarly journals The physical and chemical limnology of Yukon’s largest lake, Lhù’ààn Mân' (Kluane Lake), prior to the 2016 ‘A’ą̈y Chù’ diversion

2021 ◽  
Author(s):  
Ellorie McKnight ◽  
Heidi Swanson ◽  
Janice Brahney ◽  
David Hik
Keyword(s):  
Climate Change ◽  
The Other ◽  
Nutrient Concentrations ◽  
Northeast Region ◽  
Intermediate Depth ◽  
Southern Basin ◽  
Glacier Recession ◽  
Northwestern Region ◽  
Physical And Chemical ◽  
Kluane Lake

Despite increasing evidence that large northern lakes are rapidly changing due to climate change, descriptive baseline studies of their physicochemical properties are largely lacking, limiting our ability to detect or predict change. This study represents a comprehensive scientific assessment of the limnology of Yukon’s largest lake: Lhù’ààn Mânʼ (Kluane Lake), an important waterbody for local and First Nation communities, and key habitat for trout and salmon. Water sample and instrument data generated throughout 2015 describe distinct regions within the lake and their respective seasonal variability. A deep, glacially-influenced southern basin was characterized by cold, turbid, poorly stratified, unproductive and nutrient-poor conditions; a shallower northwestern region (Tthe Kaala Daagur [Brooks/Little Arm]) was warmer, fully mixed, and more productive; a northeast region (ʼÙha Kʼènji [Talbot/Big Arm]) was clear and stratified with intermediate depth, temperature, productivity, and nutrient concentrations; a central region had intermediate physicochemical conditions relative to the other three. This variability demonstrates the need for adequate spatial (within lake) and temporal (between seasons) monitoring of large northern lakes. In 2016, glacier recession within the watershed resulted in diversion of the lake’s primary inflow (‘A’ą̈y Chù’ [Slims River]). Our results, when used together with Indigenous Knowledge, form a historical reference that enables assessments of the potential ecological consequences to Lhù’ààn Mânʼ.

Climate Change Impacts on Surface Water Quality

2017 ◽  
pp. 322-340 ◽  
Author(s):  
Never Mujere ◽  
William Moyce
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Water Discharge ◽  
Surface Water Quality ◽  
Climate Change Impacts ◽  
Nutrient Concentrations ◽  
Chemical Changes ◽  
Physical Changes ◽  
Physical And Chemical ◽  
Impacts Of Climate Change

Climate change affects water resources through changes in evaporation, groundwater recharge, temperature, runoff and rainfall. Such changes affect the mobilization of nutrients, distribution and mobility of pollutants in freshwater systems. The direct and indirect climate change impacts on water quality comprise biological, physical and chemical changes. Biological changes include pathogenic microbes in water. Physical changes include increased water temperature, reduced river and lake ice cover, more stable vertical stratification and less mixing of water of deep-water lakes, and changes in water discharge, affecting water level and retention time. Chemical changes include increased nutrient concentrations, water color and decreased oxygen content. However, few scientific works have been recently published on the impacts of climate change on water quality modification. This chapter fills a real gap because there has been no comprehensive review on climate change and river water quality to date. It focuses on the expected water quality impacts of climate change.

Climate Change Impacts on Surface Water Quality

2017 ◽  
pp. 97-115
Author(s):  
Never Mujere ◽  
William Moyce
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Water Discharge ◽  
Surface Water Quality ◽  
Climate Change Impacts ◽  
Nutrient Concentrations ◽  
Chemical Changes ◽  
Physical Changes ◽  
Physical And Chemical ◽  
Impacts Of Climate Change

Climate change affects water resources through changes in evaporation, groundwater recharge, temperature, runoff and rainfall. Such changes affect the mobilization of nutrients, distribution and mobility of pollutants in freshwater systems. The direct and indirect climate change impacts on water quality comprise biological, physical and chemical changes. Biological changes include pathogenic microbes in water. Physical changes include increased water temperature, reduced river and lake ice cover, more stable vertical stratification and less mixing of water of deep-water lakes, and changes in water discharge, affecting water level and retention time. Chemical changes include increased nutrient concentrations, water color and decreased oxygen content. However, few scientific works have been recently published on the impacts of climate change on water quality modification. This chapter fills a real gap because there has been no comprehensive review on climate change and river water quality to date. It focuses on the expected water quality impacts of climate change.

CURRENT SITUATION OF MANAGEMENT OF LIFE SKILLS EDUCATIONAL ACTIVITIES TO RESPONSE TO CLIMATE CHANGE AND PREVENTION OF DISASTER FOR THE SUSTAINABLE DEVELOPMENT OF LOCAL COMMUNITIES IN THE ETHNIC MINORITIES BOARDING HIGH SCHOOLS OF THE NORTHWESTERN AREA AND ISSUES HAS BEEN POSED

2019 ◽  
Vol 8 (3) ◽  
Author(s):  
Vu Thi Thu Trang
Keyword(s):  
Climate Change ◽  
Sustainable Development ◽  
High Schools ◽  
Ethnic Minority ◽  
Ethnic Minorities ◽  
Life Skills ◽  
Local Communities ◽  
Disaster Prevention ◽  
The Sustainable Development ◽  
Northwestern Region

Through survey results on the status of management of life skills education activities to cope with climate change and disaster prevention for the sustainable development of local communities in the ethnic minority boarding high schools in the Northwestern region from 2013 to 2018, the author deeply analyzed and assessed the strengths, weaknesses, causes of strengths and weaknesses of the management of education activities on life skills to cope with climate change and disaster prevention for the sustainable development of local communities for ethnic minority students at boarding high schools for ethnic minorities in the Northwestern region in the present period and the issues raised.

Stress Testing to Assess Recovery from Extreme Events

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
M. John Plodinec
Keyword(s):  
Climate Change ◽  
United States ◽  
Financial Institutions ◽  
Extreme Events ◽  
Stress Testing ◽  
The United States ◽  
The Other ◽  
New Approach ◽  
Rapid Spread ◽  
Potential Benefits

Abstract Over the last decade, communities have become increasingly aware of the risks they face. They are threatened by natural disasters, which may be exacerbated by climate change and the movement of land masses. Growing globalization has made a pandemic due to the rapid spread of highly infectious diseases ever more likely. Societal discord breeds its own threats, not the least of which is the spread of radical ideologies giving rise to terrorism. The accelerating rate of technological change has bred its own social and economic risks. This widening spectrum of risk poses a difficult question to every community – how resilient will the community be to the extreme events it faces. In this paper, we present a new approach to answering that question. It is based on the stress testing of financial institutions required by regulators in the United States and elsewhere. It generalizes stress testing by expanding the concept of “capital” beyond finance to include the other “capitals” (e.g., human, social) possessed by a community. Through use of this approach, communities can determine which investments of its capitals are most likely to improve its resilience. We provide an example of using the approach, and discuss its potential benefits.

scholarly journals Is the Green Wave Really Green? The Risks of Rebound Effects When Implementing “Green” Policies

2021 ◽  
Vol 13 (10) ◽  
pp. 5411
Author(s):  
Elisabeth Bloder ◽  
Georg Jäger
Keyword(s):  
Climate Change ◽  
High Risk ◽  
Urban Areas ◽  
The Other ◽  
Agent Based ◽  
Traffic Lights ◽  
Traffic System ◽  
Rebound Effects ◽  
Car Use ◽  
Reduce Emissions

Traffic and transportation are main contributors to the global CO2 emissions and resulting climate change. Especially in urban areas, traffic flow is not optimal and thus offers possibilities to reduce emissions. The concept of a Green Wave, i.e., the coordinated switching of traffic lights in order to favor a single direction and reduce congestion, is often discussed as a simple mechanism to avoid breaking and accelerating, thereby reducing fuel consumption. On the other hand, making car use more attractive might also increase emissions. In this study, we use an agent-based model to investigate the benefit of a Green Wave in order to find out whether it can outweigh the effects of increased car use. We find that although the Green Wave has the potential to reduce emissions, there is also a high risk of heaving a net increase in emissions, depending on the specifics of the traffic system.

scholarly journals Phenology of two interdependent traits in migratory birds in response to climate change

2015 ◽  
Vol 282 (1807) ◽  
pp. 20150288 ◽  
Author(s):  
Nadiah Pardede Kristensen ◽  
Jacob Johansson ◽  
Jörgen Ripa ◽  
Niclas Jonzén
Keyword(s):  
Climate Change ◽  
Resource Availability ◽  
Migratory Birds ◽  
Egg Laying ◽  
The Other ◽  
Sufficient Evidence ◽  
Hatching Date ◽  
Arrival Date ◽  
Body Of Knowledge ◽  
Asynchronous Hatching

In migratory birds, arrival date and hatching date are two key phenological markers that have responded to global warming. A body of knowledge exists relating these traits to evolutionary pressures. In this study, we formalize this knowledge into general mathematical assumptions, and use them in an ecoevolutionary model. In contrast to previous models, this study novelty accounts for both traits—arrival date and hatching date—and the interdependence between them, revealing when one, the other or both will respond to climate. For all models sharing the assumptions, the following phenological responses will occur. First, if the nestling-prey peak is late enough, hatching is synchronous with, and arrival date evolves independently of, prey phenology. Second, when resource availability constrains the length of the pre-laying period, hatching is adaptively asynchronous with prey phenology. Predictions for both traits compare well with empirical observations. In response to advancing prey phenology, arrival date may advance, remain unchanged, or even become delayed; the latter occurring when egg-laying resources are only available relatively late in the season. The model shows that asynchronous hatching and unresponsive arrival date are not sufficient evidence that phenological adaptation is constrained. The work provides a framework for exploring microevolution of interdependent phenological traits.

Climate Change: The Other Pandemic

2020 ◽  
Vol 112 (5) ◽  
pp. S17
Author(s):  
Mark A. Mitchell ◽  
Cheryl Holder
Keyword(s):  
Climate Change ◽  
The Other

Investigating the effects of climate change on structural resistance and actions

2021 ◽  
Author(s):  
Andre Orcesi ◽  
Emilio Bastidas-Arteaga ◽  
Olga Markogiannaki ◽  
Yue Li ◽  
Franck Schoefs ◽  
...  
Keyword(s):  
Climate Change ◽  
Climate Variability ◽  
Natural Hazards ◽  
Extreme Events ◽  
Performance Indicator ◽  
Design Life ◽  
Structural Durability ◽  
Structural Resistance ◽  
Physical And Chemical ◽  
Life Function

<p>One major issue when considering the effects of climate change is to understand, qualify and quantify how natural hazards and the changing climate will likely impact infrastructure assets and services as it strongly depends on current and future climate variability, location, asset design life, function and condition. So far, there is no well-defined and agreed performance indicator that isolates the effects of climate change for structures. Rather, one can mention some key considerations on how climate change may produce changes of vulnerability due to physical and chemical actions affecting structural durability or changes of the exposure in terms of intensity/frequency of extreme events. This paper considers these two aspects and associated challenges, considering some recent activities of members of the IABSE TG6.1.</p>

scholarly journals First record of Solea (Microchirus) boscanion (Osteichthyes: Soleidae) in the Mediterranean Sea, with data on other sympatric soleid species

2002 ◽  
Vol 82 (5) ◽  
pp. 907-911 ◽  
Author(s):  
Enric Massutí ◽  
J.A. Reina-Hervás ◽  
Domingo Lloris ◽  
L. Gil de Sola
Keyword(s):  
Climate Change ◽  
Mediterranean Sea ◽  
First Record ◽  
Western Mediterranean ◽  
The Other ◽  
The Mediterranean

The capture of five specimens of Solea (Microchirus) boscanion (Osteichthyes: Soleidae), a species previously unrecorded in the Mediterranean, is reported from the Iberian coast (western Mediterranean). The main morphometric and meristic measurements of this species with data of the other sympatric, and morphologically very similar, soleids Microchirus variegatus and Buglossidium luteum are also given. The record is discussed in relation to climate change and competition between species.

scholarly journals Klimaforandringer: Perspektiv og skala i studiet af det høje nord

2011 ◽  
Author(s):  
Kirsten Hastrup
Keyword(s):  
Climate Change ◽  
Vulnerable Populations ◽  
The Other ◽  
Social Worlds ◽  
The One ◽  
Strategic Perspective

Klima og klimaforandringer er blevet nye store temaer i antropologien, og det er påtrængende at stille kritiske spørgsmål til brugen af disse begreber, der synes at indeholde både konkret (lokalt) vejr og abstrakt (globalt) klima. Spørgsmålet er, hvordan man kan bruge „klimaet“ strategisk og produktivt i antropologiske analyser uden at gøre det til endnu en udefrakommende ulykke, der rammer klodens svage befolkninger. I artiklen argumenteres der for en nytænkning af skalabegrebet, som kan rumme både det „lokale“ og det „globale“, i og med at der er tale om et analytisk perspektiv snarere end et empirisk forhold. Herigennem åbnes der for en komparativ analyse af „klimaets“ infiltrering i det sociale og dets varierende forklaringsværdi. Artiklen trækker på forfatterens arbejde i Island og Grønland. Søgeord: klimaforandringer, skala, worlding, Island, Grønland English: Climate Explanations: Perspective and Scale in the Study of the High North“Climate” has entered into everyday parlance across the globe. In anthropology, “climate change” has opened up a new field of concern for vulnerable populations on the one hand and for the distinctiveness of the discipline on the other. In this article it is argued that while climate as such is a meteorological abstraction, it may also function as a strategic perspective, which allows for a comparison between ascribed values and dynamisms in social worlds. It is further shown how the implications of worldwide climate change open up for a new understanding of scale as an analytical rather than an empirical category. The substance draws from the author’s work in Northwest Greenland and in Iceland. Keywords: Climate change, scale, worlding, Iceland, Greenland 

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