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Does Seasonality, Tidal Cycle, and Plumage Color Influence Feeding Behavior and Efficiency of Western Reef Heron ()?
Animals (Basel)
February 2020
Department of Biology, United Arab Emirates University, Ai-Ain 15551, UAE.
Polymorphic traits may evolve in many species of birds, often driven by multiple environmental factors. It is hypothesized that polymorphic traits in herons could be influenced by feeding behavior. Most of the Western Reef Herons (Egretta egularis) (more than 70%) are of the dark morph in the United Arab Emirates (UAE).
View Article and Find Full Text PDFThe value artificial lake ecosystems provide to recreational anglers: Implications for management of biodiversity and outdoor recreation.
J Environ Manage
December 2019
Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587, Berlin, Germany; Division of Integrative Fisheries Management, Faculty of Life Sciences, Humboldt-Universität zu Berlin, Philippstrasse 13, Haus 7, 10115, Berlin, Germany. Electronic address:
Small lakes largely outnumber large lakes among the world's lentic ecosystems. Despite being common landscape elements, however, little is known about the value small lakes provide to recreationists. This paper presents results of an economic valuation study concerned with small gravel pits in Lower Saxony, Germany.
View Article and Find Full Text PDFThe influence of environmental and health indicators on premature mortality: An empirical analysis of the City of Toronto's 140 neighborhoods.
Health Place
July 2019
Department of Chemistry and Biology, Environmental Applied Science and Management-Yeates School of Graduate Studies, Ryerson University, 350 Victoria St, Toronto, ON, M5B 2K3, Canada. Electronic address:
The objective of this paper was to assess the link between premature mortality and a combination of neighbourhood contextual (environmental and health) and compositional (socioeconomic and demographic) characteristics. We statistically and spatially examined six environmental variables (ultrafine particles, carcinogenic and non-carcinogenic pollutants, pollution released to air, tree cover, and walkability index), six health service indicators (number health providers, breast, colorectal and cervical cancer screening uptake rates, student nutrition program uptake rates, and healthy food index), and eight socioeconomic indicators (total income, Gini coefficient, two age categories - below and above 40 years, proportion of females to males, visible minorities, Indigenous peoples, education, less than grade 9) among 140 neighbourhoods of the City of Toronto in Ontario (Canada). We applied principal component analysis to identify patterns and to reduce the number of explanatory variables into combined component axes that represent unique variation in these confounded and overlapping factors.
View Article and Find Full Text PDFWalking the Shoreline: Erosion, Regrowth, and Professional Formation.
JAMA
December 2017
Department of Medicine, Section of Palliative Medicine, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire.
A review of the impacts of nature based recreation on birds.
J Environ Manage
October 2011
School of Environment, Griffith University, Gold Coast, Queensland 4222, Australia.
Nature based recreation such as wildlife viewing, hiking, running, cycling, canoeing, horse riding and dog walking can have negative environmental effects. A review of the recreation ecology literature published in English language academic journals identified 69 papers from 1978 to 2010 that examined the effect of these activities on birds. Sixty-one of the papers (88%) found negative impacts, including changes in bird physiology (all 11 papers), immediate behaviour (37 out of 41 papers), as well as changes in abundance (28 out of 33 papers) and reproductive success (28 out of 33 papers).
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