population ecology Articles
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Seasonal variations in the water quality, diversity and population ecology of intertidal macrofauna at an industrially influenced coast
Present communication reports the physico-chemical and biological quality of seawater and status of benthos of a highly industrialized shore of the north-western coastline of India. The coastal area considered for the present study, encircled by a variety of industries, was divided into two sampling sites and monitored for two consecutive years. Results of the water quality suggest that the ...
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Interdisciplinary research at the Urban–Rural interface: The West ga project
As human populations increase, ecological and social issues become inextricably linked to a greater degree. Solutions to complex social–ecological problems can only be derived through the use of integrated research that can account for the interplay of many factors across traditional discipline lines. We are using such an integrated research to clarify relationships among socioeconomic drivers, ...
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From home range dynamics to population cycles: Validation and realism of a common vole population model for pesticide risk assessment
Despite various attempts to establish population models as standard tools in pesticide risk assessment, population models still receive limited acceptance by risk assessors and authorities in Europe. A main criticism of risk assessors is that population models are often not or not sufficiently validated. Hence the realism of population‐level risk assessments conducted with such models remains ...
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Genome-scale metabolic modeling to provide insight into the production of storage compounds during feast–famine cycles of activated sludge
Studying storage metabolism during feast–famine cycles of activated sludge treatment systems provides profound insight in terms of both operational issues (e.g., foaming and bulking) and process optimization for the production of value added by-products (e.g., bioplastics). We examined the storage metabolism (including poly-β-hydroxybutyrate [PHB], glycogen, and triacylglycerols ...
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Capital accumulation, technological progress and environment
The paper deals with the problem of the relation between capital accumulation and the carrying capacity of the ecosphere for humankind. The approach is that of ecological economics, which utilises laws and models of ecological sciences to model some aspects of economic systems and their interaction with 'other' ecological systems. Being the analysis of this relation a very hard task, the article ...
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Application of Multicriteria Decision Analysis in Environmental Decision Making
Decision making in environmental projects can be complex and seemingly intractable, principally because of the inherent trade-offs between sociopolitical, environmental, ecological, and economic factors. The selection of appropriate remedial and abatement strategies for contaminated sites, land use planning, and regulatory processes often involves multiple additional criteria such as the ...
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Adapting to new challenges: IDSS for emergency preparedness and management
In order to manage risks, emergency planning and preparedness procedures are currently in use. The advent of Information Technology (IT) in the field of emergency management opened vast possibilities for the development of Integrated Decision Support Systems (IDSS). They are designed to perform calculations, make risk representation, fully interact with stakeholders, and assist in communicating ...
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Effect of sulfate and lactate loading rates on the respiration process and microbial population changes measured by ecological indices
In a sulfate reducing process, increasing loading rates and sulfide accumulation may induce population changes resulting in decreasing effectiveness of the process. Thus, the relationship between microbial metabolism changes and population dynamics was studied. An upflow anaerobic sludge blanket reactor was operated at different sulfate loading rates (SLR), from 290 to 981 mg SO4 − S/L d ...
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Application of Ecological Risk Assessment in Managing Residual Fly Ash in TVA's Watts Bar Reservoir, Tennessee
The Tennessee Valley Authority conducted a Baseline Ecological Risk Assessment (BERA) for the Kingston Fossil Plant ash release site to evaluate potential effects of residual coal ash on biota in Watts Bar Reservoir, Tennessee. The BERA was in response to a release of 4.1 million m3 of coal ash on December 22, 2008. It used multiple lines of evidence to assess risks for 17 different ecological ...
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University of Wisconsin-Stevens Point - 2010 - Schmeeckle Reserve
TSchmeeckle Reserve is a 280-acre natural area on the campus of the University of Wisconsin-Stevens Point (UWSP). Its mission is to preserve and manage native habitats of Central Wisconsin, serve as an outdoor laboratory for the university, and provide recreational opportunities for the community. The Reserve is a significant field station for the university. In the 2008-2009 academic year, over ...
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Towards sustainable management of huntable migratory waterbirds in Europe
The EU Birds Directive and the African-Eurasian Waterbird Agreement provide an adequate legal framework for sustainable management of migratory waterbird populations. The main shortcoming of both instruments is that it leaves harvest decisions of a shared resource to individual Member States and Contracting Parties without providing a shared information base and mechanism to assess the impact of ...
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Researchers around the world are learning from indigenous communities. Here’s why that’s a good thing.
From Canada’s Far North to Australia, pursuing a more respectful relationship between science and traditional knowledge In the rugged Sahtú Region of Canada’s Northwest Territories, a district so remote that in winter only a single treacherous ice road connects it to the outside world, life revolves around caribou. For millennia, the Dene people lived as nomads, tracking vast ...
By Ensia
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Consumers and macro-level forces behind CO2 emission development
With the ImPACT framework, energy-related carbon dioxide emissions can be simply presented as combination of four forces: population, affluence, energy intensity of economy and emission intensity of energy. Consumers can directly influence energy efficiency and emission intensity by their daily purchases and investments. Conserving energy has a direct influence. Economic incentives are ...
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Marine phanerogams as a tool in the evaluation of marine trace-metal contamination: an example from the Mediterranean
New ways of evaluating the quality of the coastal marine environment in a practical, dependable and cost-efficient manner are continually sought. It would thus appear of some value to make use of bioindicator species that reflect both the average levels and the temporal variations of contaminants at a given site. Owing to their extensive distribution in the littoral zone and the ecological ...
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Mechanistic effect modeling for ecological risk assessment: Where to go from here?
Mechanistic effect models (MEMs) consider the mechanisms of how chemicals affect individuals and ecological systems such as populations and communities. There is an increasing awareness that MEMs have high potential to make risk assessment of chemicals more ecologically relevant than current standard practice. Here we discuss what kinds of MEMs are needed to improve scientific and regulatory ...
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Habitat Restoration – Salmon Trout River - Case Study
Construction Date: Summer 2012/Summer 2013 Location: Big Bay, Michigan Category: Sand Wand™ Habitat Restoration A little background Coaster brook trout were once common throughout Lake Superior basin tributaries and near shore waters, but the populations were wiped out due to over-fishing and habitat degradation. The Salmon Trout River, in Marquette, Mich., hosts the last known ...
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Life‐history phenology strongly influences population vulnerability to toxicants: A case study with the mudsnail Potamopyrgus antipodarum
One of the main objectives of ecological risk assessment is to evaluate the effects of toxicants on ecologically relevant biological systems such as populations or communities. However, the effects of toxicants are commonly measured on selected subindividual or individual endpoints due to their specificity against chemical stressors. Introducing these effects into population models is a ...
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Assessing effects of PCB exposure on American mink (Mustela vison) abundance in Portland Harbor
This paper presents an integrated analysis using a Monte‐Carlo exposure model, dose‐response effects model and habitat, and population dynamics models, all of which allow us to quantitatively estimate the effects of polychlorinated biphenyl (PCB) exposure on American mink (Mustela vison) abundance at the Portland Harbor Superfund Site (Site), and the associated uncertainties. The Site extends ...
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The best way to restore environments in the face of climate change
Florida’s Kissimmee River once flowed freely. Fish, birds and other wildlife dwelled in the wetlands it fed. But in the 1960s, spurred by public outrage over flooding, the U.S. Army Corps of Engineers straightened the winding waterway and turned it into a drainage canal. Flip forward a few decades and the river is returning — at least in part. The U.S. Army Corps of Engineers has ...
By Ensia
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Ecological Risk Assessment
In recent years, ecological risk assessment (ERA) has emerged as an important part of environmental protection programs. The following discussion provides a brief overview of ERA issues. What is ecological risk assessment? Ecological risk assessment is the practice of determining the nature and likelihood of effects of our actions on animals, plants, and the environment. Ecological risk ...
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