Changes in dissolved organic material determine exposure of stream benthic communities to UV-B radiation and heavy metals: implications for climate change

2008 ◽  
Vol 14 (9) ◽  
pp. 2201-2214 ◽  
Author(s):  
WILLIAM H. CLEMENTS ◽  
MARJORIE L. BROOKS ◽  
DONNA R. KASHIAN ◽  
ROBERT E. ZUELLIG
Keyword(s):  
Climate Change ◽  
Heavy Metals ◽  
Organic Material ◽  
Benthic Communities

scholarly journals Are different benthic communities in Arctic delta lakes distinguishable along a hydrological connectivity gradient using a rapid bioassessment approach?

2020 ◽  
Vol 6 (4) ◽  
pp. 463-487
Author(s):  
Ryan W. Scott ◽  
Suzanne E. Tank ◽  
Xiaowa Wang ◽  
Roberto Quinlan
Keyword(s):  
Climate Change ◽  
Benthic Communities ◽  
Mackenzie Delta ◽  
Benthic Assemblages ◽  
Community Based ◽  
Rapid Bioassessment ◽  
The Family ◽  
Productivity Gradients ◽  
To Come ◽  
Potential Use

Aquatic habitats in the Canadian Arctic are expected to come under increasing stress due to projected effects of climate change. There is a need for community-based biomonitoring programs to observe and understand the effects of these stressors on the environment. Here we present results from a 5 year annual sampling program of benthic invertebrates from lakes in the Mackenzie Delta, Northwest Territories, using a rapid bioassessment protocol. Connectivity between the deltaic lakes and main channels is a major driver of lake function and is expected to be substantially impacted by climate change. Lakes were selected along a gradient of connectivity based on sill elevation above the river. Using multivariate analyses of community structure, we determined that benthic assemblages responded to differences in connection time among lakes. This response was detected using a coarse taxonomic level that could be applied by community groups or volunteers but was stronger when invertebrates were identified to the family and genus levels. A secondary gradient was observed that corresponded to productivity gradients in lakes that are isolated from the river during summer. We show that benthic assemblages have potential use as sensitive indicators of climate-mediated changes to the hydrology of lakes in the Mackenzie Delta.

Lichens as indicators of forest health in Canada

2006 ◽  
Vol 82 (3) ◽  
pp. 335-343 ◽  
Author(s):  
Markus N Thormann
Keyword(s):  
Climate Change ◽  
Heavy Metals ◽  
North America ◽  
Species Composition ◽  
Federal Government ◽  
Monitoring Program ◽  
Forest Health ◽  
Acid Precipitation ◽  
Insufficient Data ◽  
Monitoring Protocol

Canadian forests are naturally dynamic ecosystems, changing species composition and abundance as the ecosystem evolves through succession or reacts to disturbances, such as wind and insects. Pollution and climate change will be the largest stressors to Canada's forests in the future. Their future impact on the health of Canada's forests remains speculative. Lichens have been identified as valuable indicators of forest health; however, there are no comprehensive datasets on which lichens are indicative of forest health in Canada. An analysis of the existing literature reveals a large number of lichens that can be used to monitor levels of various pollutants (general pollution: 51 species; sulphur dioxide: 42 species; photochemicals: 23 species; fluoride: 18 species; heavy metals: 3 species; acid precipitation: 8 species; sulphite: 2 species; nitrate: 2 species). The use of lichens as indicators of climate change is also reported in the literature but, there are insufficient data to monitor the effects of climate change on lichen communities in North America. While various provincial and federal government departments and industries have been monitoring lichen communities across Canada for up to nearly three decades, there exists no standard monitoring protocol for lichens in Canada, which makes comparisons among studies challenging. The development of a standard monitoring protocol would allow integration of the various initiatives into a nationwide lichen monitoring program. Key words: lichens, biomonitoring, forest health, pollution, climate change

Epilepsy and Stroke Emerging From Climate Change-Related Neurotoxicity

2019 ◽  
pp. 322-347
Author(s):  
Hind Benammi ◽  
Omar El Hiba ◽  
Abdelmohcine Aimrane ◽  
Nadia Zouhairi ◽  
Hicham Chatoui ◽  
...  
Keyword(s):  
Climate Change ◽  
Heavy Metals ◽  
Nervous System ◽  
Toxic Elements ◽  
Neurological Diseases ◽  
Quality Of Water ◽  
Wide Range ◽  
The Impact ◽  
Shed Light

Climate change has an important impact on the environment. As it degrades the quality of water, soil, and area, it also spreads the distribution of many toxic elements, specifically heavy metals and pesticides. The impact of climate change on contamination with heavy metals and pesticides has been well investigated and discussed. The influence of these elements on human health is obviously exacerbated following their extended distribution. Moreover, a wide range of health problems have been associated to such intoxication, among which impairment and dysfunction of the nervous system are prominent. In this chapter, the authors will shed light on two most common neurological diseases such as epilepsy and stroke affecting people worldwide arising from food and water contaminations, mainly with heavy metals and pesticides.

Climate Change Outcomes on the Environmental Ecotoxicology

2022 ◽  
pp. 1611-1632
Author(s):  
Soraia El Baz
Keyword(s):  
Climate Change ◽  
Heavy Metals ◽  
Environmental Behavior ◽  
Toxic Pollutants ◽  
Climate Fluctuations ◽  
Precipitation And Temperature

Climate change is a daunting problem and has only recently attracted attention. This chapter presents a review on the implications of climate change on the regulation, and modelling of toxic pollutants. Also, it identifies relationships between climate fluctuations and changes in some polluants distribution (heavy metals, hydrocarbons, and pesticides). Moreover, the influence of climate change on polluant environmental behavior is explored by studying polluants response to inter-annual climate fluctuations such as precipitation and temperature. Therefore, it will be important to monitor strategies taking into account climate change and new regulatory plans should be devised in toxics polluant management.

Impact of heavy metals of industrial plant wastewater on benthic communities of Bizerte Lagoon (Tunisia)

2019 ◽  
Vol 35 (8) ◽  
pp. 746-774 ◽  
Author(s):  
Ibtihel Saidi ◽  
Olfa Ben Said ◽  
Jamel Ben Abdelmalek ◽  
Soufiane Jouili ◽  
Luis Chicharo ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Benthic Communities ◽  
Industrial Plant ◽  
Bizerte Lagoon

scholarly journals Unraveling the interactive effects of climate change and oil contamination on laboratory‐simulated estuarine benthic communities

2015 ◽  
Vol 21 (5) ◽  
pp. 1871-1886 ◽  
Author(s):  
Francisco J. R. C. Coelho ◽  
Daniel F. R. Cleary ◽  
Rui J. M. Rocha ◽  
Ricardo Calado ◽  
José M. Castanheira ◽  
...  
Keyword(s):  
Climate Change ◽  
Benthic Communities ◽  
Interactive Effects ◽  
Oil Contamination

Bovine Bone Processing for Biofilter Application

2012 ◽  
Vol 727-728 ◽  
pp. 727-730 ◽  
Author(s):  
Omayra Ferreiro ◽  
Fatima Yubero ◽  
Roseli Marins Balestra ◽  
Marize Varella ◽  
Magna Monteiro
Keyword(s):  
Heavy Metals ◽  
Grain Size ◽  
Sorption Capacity ◽  
Organic Material ◽  
Bovine Bone ◽  
X Ray Diffraction ◽  
X Ray ◽  
Bone Powder ◽  
Synthetic Hydroxyapatite ◽  
Powder Phase

This work involves the processing of bovine bone for use as biofilter collector of heavy metals in water. Before processing, it was necessary to clean the bone selected for removing the organic material adhered thereto. Drying was done in weathered during 18 days. Then the bones were calcined at a constant temperature of 750°C for 6 hour. The bone grinding was performed by means of an analytical mill in order to obtain a finer grain size. Once processed, the bovine bone powder was characterized by X-ray diffraction and fluorescence analyses. The results showed that the powder phase is less crystalline hydroxyapatite, when compared to highly crystalline synthetic hydroxyapatite, which favors the sorption capacity of lead by bovine bone.

scholarly journals THE ASSESSMENT OF CLIMATE CHANGE AND WATERSHED EFFECT ON THE HETEROTROPHIC METABOLISM IN THE LAKE ONEGO ECOSYSTEM

2017 ◽  
Vol 1 ◽  
pp. 140 ◽  
Author(s):  
N. M. Kalinkina ◽  
L. E. Nazarova ◽  
E. V. Tekanova ◽  
P. Yu. Litinsky ◽  
A. I. Sidorova
Keyword(s):  
Climate Change ◽  
Organic Matter ◽  
Benthic Communities ◽  
Terrestrial Ecosystems ◽  
Water Bodies ◽  
Balance Study ◽  
Climate Conditions ◽  
Different Types ◽  
Heterotrophic Metabolism ◽  
Matter Flow

Lake Onego, as one of the largest water bodies in a humid zone, is the recipient of terrestrial carbon and plays an important role in the global balance of this element. Due to heterotrophic metabolism in the Lake Onego ecosystem, substantial emissions of carbon dioxide from this lake into the atmosphere can be assumed. However, the extent of this phenomenon is still poorly known. As a climate change has led to an increase in water and organic matter flow into the northern water bodies, the carbon balance study of aquatic ecosystems is of particular relevance. The elements of the water balance for the Lake Onego catchment area in the current climate conditions are assessed. Based on satellite images the model of Lake Onego watershed terrestrial ecosystems is used to simulate the flow of organic matter into the lake with different types of vegetation and topography consideration. The assessment of the benthic communities habitat is carried out taking into account the accumulation of organic matter in various parts of Lake Onego.

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