scholarly journals Detecting range shifts among Australian fishes in response to climate change

2011 ◽  
Vol 62 (9) ◽  
pp. 1027 ◽  
Author(s):  
David J. Booth ◽  
Nick Bond ◽  
Peter Macreadie
Keyword(s):  
Climate Change ◽  
Large Scale ◽  
Environmental Changes ◽  
Meta Analysis ◽  
Economic Consequences ◽  
Range Shifts ◽  
Definitive Evidence ◽  
Key Drivers ◽  
Definition Of ◽  
Impacts Of Climate Change

One of the most obvious and expected impacts of climate change is a shift in the distributional range of organisms, which could have considerable ecological and economic consequences. Australian waters are hotspots for climate-induced environmental changes; here, we review these potential changes and their apparent and potential implications for freshwater, estuarine and marine fish. Our meta-analysis detected <300 papers globally on ‘fish’ and ‘range shifts’, with ~7% being from Australia. Of the Australian papers, only one study exhibited definitive evidence of climate-induced range shifts, with most studies focussing instead on future predictions. There was little consensus in the literature regarding the definition of ‘range’, largely because of populations having distributions that fluctuate regularly. For example, many marine populations have broad dispersal of offspring (causing vagrancy). Similarly, in freshwater and estuarine systems, regular environmental changes (e.g. seasonal, ENSO cycles – not related to climate change) cause expansion and contraction of populations, which confounds efforts to detect range ‘shifts’. We found that increases in water temperature, reduced freshwater flows and changes in ocean currents are likely to be the key drivers of climate-induced range shifts in Australian fishes. Although large-scale frequent and rigorous direct surveys of fishes across their entire distributional ranges, especially at range edges, will be essential to detect range shifts of fishes in response to climate change, we suggest careful co-opting of fisheries, museum and other regional databases as a potential, but imperfect alternative.

scholarly journals FRONTLINE: Climate change reporting in an Australian context: Recognition, adaptation and solutions

2013 ◽  
Vol 19 (1) ◽  
pp. 203 ◽  
Author(s):  
Bridget Fitzgerald
Keyword(s):  
Climate Change ◽  
Large Scale ◽  
Environmental Reporting ◽  
Context Recognition ◽  
Advocacy Journalism ◽  
Local Impacts ◽  
Definition Of ◽  
Journalism Research ◽  
Journalistic Practice ◽  
Impacts Of Climate Change

Exegesis: This exegesis is based on the production of three features that explore local impacts of climate change. The features are part of a journalism research project that investigated the question: how can journalistic practice generate an accurate, balanced account of climate change issues in Australia? The journalist rejects an approach that positions environmental reporting—or the ‘green beat’—as a form of advocacy journalism. In contrast, the researcher positions her journalism practice within mainstream Australian journalism. The researcher sets out to produce reports, which adhere to the conventional journalism norms, including those of ‘balance’ and ‘accuracy’. She explicitly critiques and rejects the phenomenon known as ‘balance as bias’, explored by Boykoff and Boycoff (2004) which, by over accessing climate sceptic sources, obstructs the reporting of climate change as an important economic, social, political and environmental issue. This exegesis explains and defends a different approach that focuses on local reporting rather than large-scale events in distant places. Robert Entman’s definition of framing is used to explain how climate change issues were addressed in each narrative.

Compare and Analyze of the Definition and Development of Distributed Generation in China and Abroad

2014 ◽  
Vol 953-954 ◽  
pp. 925-928 ◽  
Author(s):  
Bi Bin Huang
Keyword(s):  
Climate Change ◽  
Power Generation ◽  
Energy Conservation ◽  
Distributed Generation ◽  
Basic Characteristic ◽  
Large Scale ◽  
General Definition ◽  
Development Status ◽  
Incentive Policy ◽  
Definition Of

As the positive and important supplement to large-scale power generation, distributed generation (DG) will become key measure to promote energy conservation and solve the problems of climate change in China. Due to absence of universal authoritative definition of DG, this paper summarizes the basic characteristic of DG based on the definitions in typical countries (or organizations) and carried out general definition of DG considering our national conditions and power grid features. From the views of resource, incentive policy and industry, this paper analyzed the fundamental for DG development and compared the development status in typical countries.

scholarly journals Climate change drives mountain butterflies towards the summits

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dennis Rödder ◽  
Thomas Schmitt ◽  
Patrick Gros ◽  
Werner Ulrich ◽  
Jan Christian Habel
Keyword(s):  
Climate Change ◽  
Life History ◽  
Climate Warming ◽  
Environmental Changes ◽  
Range Shifts ◽  
Solar Irradiation ◽  
High Mountain ◽  
Detailed Knowledge ◽  
Annual Range

AbstractClimate change impacts biodiversity and is driving range shifts of species and populations across the globe. To understand the effects of climate warming on biota, long-term observations of the occurrence of species and detailed knowledge on their ecology and life-history is crucial. Mountain species particularly suffer under climate warming and often respond to environmental changes by altitudinal range shifts. We assessed long-term distribution trends of mountain butterflies across the eastern Alps and calculated species’ specific annual range shifts based on field observations and species distribution models, counterbalancing the potential drawbacks of both approaches. We also compiled details on the ecology, behaviour and life-history, and the climate niche of each species assessed. We found that the highest altitudinal maxima were observed recently in the majority of cases, while the lowest altitudes of observations were recorded before 1980. Mobile and generalist species with a broad ecological amplitude tended to move uphill more than specialist and sedentary species. As main drivers we identified climatic conditions and topographic variables, such as insolation and solar irradiation. This study provides important evidence for responses of high mountain taxa to rapid climate change. Our study underlines the advantage of combining historical surveys and museum collection data with cutting-edge analyses.

scholarly journals Assessing the Vulnerability of Marine Fisheries in China: Towards an Inter-Provincial Perspective

2018 ◽  
Vol 10 (11) ◽  
pp. 4302 ◽  
Author(s):  
Qi Chen ◽  
Weiteng Shen ◽  
Bing Yu
Keyword(s):  
Climate Change ◽  
Adaptive Capacity ◽  
Fisheries Management ◽  
Vocational Training ◽  
Large Scale ◽  
Environmental Changes ◽  
Marine Pollution ◽  
Marine Fisheries ◽  
Intergovernmental Panel ◽  
Adaptation Measures

China’s marine fisheries are undergoing large-scale environmental changes associated with climate change, marine pollution, and overfishing. The assessment of marine fisheries vulnerability has become extremely necessary for fisheries management and sustainable development. However, studies on China’s marine fisheries vulnerability remains sparse. This study aimed to provide an analysis of the inter-provincial level vulnerability of China’s marine fisheries under multiple disturbances. The vulnerability measure was composed of exposure, sensitivity, and adaptive capacity indicators specific to marine fisheries based on the Intergovernmental Panel on Climate Change (IPCC) definitions. Results showed that Liaoning, Hebei, Fujian, and Hainan provinces appeared to be the most vulnerable; Shanghai appeared to be less vulnerable among China’s 11 coastal provinces; and the key sources of vulnerability differed considerably among coastal regions. The high vulnerability regions could be divided into two different patterns according to the combination of exposure, sensitivity, and adaptive capacity, but they all had one thing in common: relatively low adaptive capacity. While some existing coercive measures to reduce dependence on fisheries were found to be helpful in China, the reality showed that appropriate adaptation measures such as improving fishermen’s education level and increasing vocational training may be helpful in enhancing the existing policy effectiveness.

scholarly journals TRANSFORMASI ADAPTASI BANGUNAN DI PERMUKIMAN INFORMAL TEPI SUNGAI KAHAYAN

2020 ◽  
Vol 4 (1) ◽  
pp. 57
Author(s):  
Nindita Kresna Murti ◽  
Atiek Suprapti ◽  
Agung Budi Sardjono
Keyword(s):  
Climate Change ◽  
Environmental Changes ◽  
Residential Buildings ◽  
Informal Settlements ◽  
Global Environment ◽  
River Bank ◽  
Building Adaptation ◽  
Negative Impacts ◽  
The City ◽  
Impacts Of Climate Change

Abstract: Many informal settlements in Indonesia have been unable to survive, this is due to changes that occur in the neighborhood. This change resulted in the not surviving of informal settlements, but this did not affect the informal settlements in the city of Palangkaraya, settlements on the banks of the Kahayan river were even more developed, and began to develop towards the mainland.As climate change and the global environment increase, there is a tendency for people to conceptualize adaptation in residential buildings as a process of survival and how adaptation is practiced by people who face the negative impacts of climate change, for example in informal settlements on the Kahayan river bank, where residents adapt to building their homes to be able to withstand environmental changes. Where the neighborhood is located there are tides of the river, as well as other environmental factorsThis study is to find out how the Kahayan River settlement communities can survive, with changes that occur in the environment by analyzing using 6 strategies in building adaptation, namely: Adjustable, Versatile, Refitable, Convertible, Scalable, and Movable (Robert Schmid, 2009). Adaptation that occurs in these settlements, namely on building houses that follow climate change, times, and the environment.Keyword: Informal Settlements, Kahayan River Edge, Adaptation, Transformation.Abstrak: Permukiman Informal di Indonesia banyak yang sudah tidak dapat bertahan, hal ini di karenakan adanya perubahan yang terjadi di lingkungan permukiman tersebut. Perubahan ini berakibat tidak bertahannya permukiman informal, namun hal ini tidak mempengaruhi permukiman informal di Kota Palangkaraya, permukiman yang berada di tepi sungai kahayan ini malah semakin berkembang, dan mulai berkembang menuju ke daratan.Seiring dengan meningkatnya perubahan iklim dan lingkungan global, ada kecenderungan masyarakat untuk membuat konsep adaptasi pada bangunan rumah tinggal sebagai proses untuk bertahan dan bagaimana adaptasi dipraktikkan oleh orang-orang yang menghadapi dampak negatif perubahan iklim, sebagai contoh pada permukiman informal yang berada di tepi sungai Kahayan, di mana warga beradaptasi pada bangunan rumah mereka untuk dapat bertahan terhadap perubahan lingkungan. Di mana lingkungan permukiman ini terdapat pasang surut air sungai, serta faktor lingkungan lainnya.Penelitian ini untuk mengetahui cara masyarakat permukiman tepi Sungai Kahayan dapat bertahan, dengan perubahan yang terjadi di lingkungan dengan menganalisa menggunakan 6 strategi dalam adaptasi bangunan, yaitu: Adjustable, Versatile, Refitable, Convertible, Scalable, dan Movable (Robert Schmid, 2009). Adaptasi yang terjadi pada permukiman ini, yaitu pada bangunan rumah yang mengikuti perubahan iklim, jaman, dan lingkungan.Kata Kunci: Permukiman Informal, Tepi  Sungai Kahayan, Adaptasi, Transformasi.

Construction of an Indicator System for Integrated Assessment of Environmental Quality of the Dianchi Basin

2011 ◽  
Vol 356-360 ◽  
pp. 903-907
Author(s):  
Ai Jun Li ◽  
Yan Ying Guo ◽  
Feng He ◽  
Rui Jia Yuan
Keyword(s):  
Environmental Quality ◽  
Integrated Assessment ◽  
Large Scale ◽  
Environmental Changes ◽  
Indicator System ◽  
Regional Environment ◽  
Definition Of ◽  
Changes Over Time ◽  
Regional Environmental Quality

There are few indicator systems available for monitoring and assessing the environmental quality of large-scale regions. We constructed an indicator system for integrated assessment of the environmental quality of the Dianchi Basin. First, the definition of regional environmental quality is determined by both the supply of materials and energy in the region and the extent to which the region is polluted. Second, the indicator categories used for assessment mainly comprise vegetation biomass and the concentrations of various pollutants. Third, owing to spatial heterogeneity of a region, evaluation of the regional environment first requires division into sub-regions, each of which should be relatively homogeneous with regard to physical conditions (e.g. marine and terrestrial) and appearance (e.g. vegetation cover). Finally, the mathematical models for assessing regional environmental quality can be built according to the relationships between the various indicators, the sub-regions and regional environmental quality. The indicator system built using this approach can reflect environmental changes over time and identifies reasons for environmental variation.

scholarly journals Towards understanding hydroclimatic change in Victoria, Australia – why was the last decade so dry?

2009 ◽  
Vol 6 (5) ◽  
pp. 6181-6206 ◽  
Author(s):  
A. S. Kiem ◽  
D. C. Verdon-Kidd
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
Large Scale ◽  
Regional Scale ◽  
Seasonal Rainfall ◽  
Severe Drought ◽  
Physical Mechanisms ◽  
Drought Conditions ◽  
Hydroclimatic Change ◽  
Impacts Of Climate Change

Abstract. Since the mid-1990s Victoria, located in southeast Australia, has experienced severe drought conditions characterized by streamflow that is the lowest on record in many areas. While severe decreases in annual and seasonal rainfall totals have also been observed, this alone does not seem to explain the observed reduction in flow. In this study, we investigate the large-scale climate drivers for Victoria and demonstrate how these modulate the regional scale synoptic patterns, which in turn alter the way seasonal rainfall totals are compiled and the amount of runoff per unit rainfall that is produced. The hydrological implications are significant and illustrate the need for robust hydrological modelling, which takes into account insights into physical mechanisms that drive regional hydroclimatology, in order to properly understand and quantify the impacts of climate change (natural and/or anthropogenic) on water resources.

Exploring evidence to develop a nomenclature for forensic accounting

2018 ◽  
Vol 30 (2) ◽  
pp. 135-154 ◽  
Author(s):  
Vida Botes ◽  
Ahmed Saadeh
Keyword(s):  
South Africa ◽  
New Zealand ◽  
Large Scale ◽  
Public Awareness ◽  
Meta Analysis ◽  
Future Research ◽  
Content Type ◽  
Forensic Accounting ◽  
Financial Scandals ◽  
Definition Of

Purpose Large-scale financial scandals in business have increased public awareness of fraud and the need for forensic accounting (FA) services. Despite a steadily growing body of knowledge of FA, Huber (2012) argued that the term FA is ill defined. This paper aims to support the development of a nomenclature for FA by gathering evidence on the prevalence of the term in the Southern Hemisphere. Hence the authors ask how, when, where and in which context the term FA appears. In analysing the evidence gathered, the authors also aim to identify changes to the use of the term. Finally, they intend to make suggestions for future development and research relating to the term to advance knowledge. The authors also aim to suggest a definition for the term FA. Design/methodology/approach To obtain evidence to support the development of an accepted definition for FA, a rigorous search of the literature is performed, using a structured review framework. Findings The findings of this paper demonstrate the prevalence of the term FA in publications in Australia, New Zealand and South Africa, but that limited publications from SA create opportunities for researchers from emerging economies to publish in the FA field. This meta-analysis shows among others a strong focus on the role of FA in fraud prevention and increased reliance on websites (in contrast to reliance on academic literature) for information on FA. This research identifies changes to the use of the term and concludes that the narrow definition of FA prevails. Delivering on the third objective of this paper, the authors provide insights into future developments in FA and find that a need exists to explore FA in a much wider context. Research limitations/implications The research is limited to Australia, New Zealand and South Africa. Limitations exist in that the authors focused particularly on high-quality journals and excluded other journals from our search. As they were specifically searching for the use of the term “forensic accounting”, they excluded any other term, e.g. fraud auditing, from the research. Future research may well expand the search terminology. Practical implications Without an established definition of the commonly used term forensic accounting, the general public will be confused about the services that can be expected from forensic accountants. To date, FA definitions have been formulated mostly intuitively; however, if FA is to grow as a field, an accepted definition needs to be formulated. Social implications FA offers a new area of growth in the accounting field. Clarification of exactly what is meant by the term has implications for future careers in the field of accounting. Originality/value To date, no study of this nature has been undertaken anywhere in the world.

scholarly journals Simulating the spatiotemporal variations in aboveground biomass in Inner Mongolian grasslands under environmental changes

2021 ◽  
Vol 21 (4) ◽  
pp. 3059-3071
Author(s):  
Guocheng Wang ◽  
Zhongkui Luo ◽  
Yao Huang ◽  
Wenjuan Sun ◽  
Yurong Wei ◽  
...  
Keyword(s):  
Climate Change ◽  
Aboveground Biomass ◽  
Large Scale ◽  
Environmental Changes ◽  
Regional Scale ◽  
Future Climate Change ◽  
Desert Steppe ◽  
Meadow Steppe ◽  
Grassland Type ◽  
Spatiotemporal Changes

Abstract. Grassland aboveground biomass (AGB) is a critical component of the global carbon cycle and reflects ecosystem productivity. Although it is widely acknowledged that dynamics of grassland biomass is significantly regulated by climate change, in situ evidence at meaningfully large spatiotemporal scales is limited. Here, we combine biomass measurements from six long-term (> 30 years) experiments and data in existing literatures to explore the spatiotemporal changes in AGB in Inner Mongolian temperate grasslands. We show that, on average, annual AGB over the past 4 decades is 2561, 1496 and 835 kg ha−1, respectively, in meadow steppe, typical steppe and desert steppe in Inner Mongolia. The spatiotemporal changes of AGB are regulated by interactions of climatic attributes, edaphic properties, grassland type and livestock. Using a machine-learning-based approach, we map annual AGB (from 1981 to 2100) across the Inner Mongolian grasslands at the spatial resolution of 1 km. We find that on the regional scale, meadow steppe has the highest annual AGB, followed by typical and desert steppe. Future climate change characterized mainly by warming could lead to a general decrease in grassland AGB. Under climate change, on average, compared with the historical AGB (i.e. average of 1981–2019), the AGB at the end of this century (i.e. average of 2080–2100) would decrease by 14 % under Representative Concentration Pathway (RCP) 4.5 and 28 % under RCP8.5. If the carbon dioxide (CO2) enrichment effect on AGB is considered, however, the estimated decreases in future AGB can be reversed due to the growing atmospheric CO2 concentrations under both RCP4.5 and RCP8.5. The projected changes in AGB show large spatial and temporal disparities across different grassland types and RCP scenarios. Our study demonstrates the accuracy of predictions in AGB using a modelling approach driven by several readily obtainable environmental variables and provides new data at a large scale and fine resolution extrapolated from field measurements.

Flood and center timing in a changing world

2021 ◽  
Author(s):  
Conrad Wasko ◽  
Rory Nathan ◽  
Murray Peel
Keyword(s):  
Climate Change ◽  
Large Scale ◽  
Extreme Rainfall ◽  
Interesting Property ◽  
Quality Data ◽  
Climate Change Signal ◽  
Catchment Scale ◽  
Antecedent Moisture ◽  
Flood Magnitude ◽  
Definition Of

&lt;p&gt;Climate change is expected to change the pattern of rainfall resulting in changed flood magnitude. However, in large part due to interannual variability, identifying a climate change signal in flood magnitude remains difficult. As an alternative to investigating trends in flood magnitude, it has been suggested that trends in flood timing, that is, the day of annual streamflow maxima, may be a detectable trend due climate change.&lt;/p&gt;&lt;p&gt;Here, using high-quality data from around the world, trends in flood and center timing are investigated. We begin by standardizing the data on a local definition of water year. We find an interesting property, that after standardization, the flood and centre timing of streamflow can be approximated by a normal distribution. Moreover, we find that without the standardization on local water year the calculated trend can reverse. We proceed by analyzing trends in centre and flood timing globally using linear regression.&lt;/p&gt;&lt;p&gt;Results are commensurable with large-scale climatic change. But, unlike changes in extreme rainfall, trends are not spatially consistent. Flood timing is shifting to earlier in the year in the tropics, and later in the year in the extra-tropics, consistent with changes in mean rainfall and flood magnitude. There is evidence of a reversal of trends post-drought, suggesting that the mechanisms controlling flooding at a catchment scale are changing as a result of climate change. It is concluded that trends in flood timing are related to flood generating mechanisms, and largely modulated by changing antecedent moisture conditions.&lt;/p&gt;

Sign in / Sign up

Export Citation Format

Share Document