Results 221 to 230 of about 566,677 (266)
Some of the next articles are maybe not open access.

Ecological studies

2020
Ecological studies use aggregated data to infer correlation of exposures with outcomes over time, or by place. One of the first examples of an ecological study was Emile Durkheim’s exploration of country-level factors underlying suicide, first published in 1897.
openaire   +1 more source

Stable isotopes in ecological studies

Oecologia, 2005
Stable isotope ratio analyses at natural abundance levels are an increasingly useful tool in ecological studies, with new papers being published in nearly every issue of Oecologia and other ecological journals. In April 2004, the National Institute of Water and Atmospheric Research (NIWA) and the Institute of Geological and Nuclear Sciences (IGNS) co ...
David R, Thompson   +4 more
openaire   +2 more sources

A truly ecological epigenetics study.

Molecular ecology, 2011
Until a few years ago, epigenetics was a field of research that had nothing to do with ecology and that virtually no ecologist had ever heard of. This is now changing, as more and more ecologists learn about epigenetic processes and their potential ecological and evolutionary relevance, and a new research field of ecological epigenetics is beginning to
Bossdorf Oliver, Zhang Yuanye
openaire   +4 more sources

Selection bias in ecological studies

Public Health, 2017
An ecological study is an observational epidemiological study which uses aggregated data instead of individual data, where the aggregation is usually done at some geographical level such as a town, a region, or a country.1 They are typically carried out when an exposure of interest is fully defined at the group level.2 A classical example is the ...
V. Rousson, P.C. Rosselet, F. Paccaud
openaire   +3 more sources

SCRUB TYPHUS AS A STUDY IN ECOLOGY*

Nature, 1947
MITE-BORNE scrub typhus (tsutsugamushi disease) was a serious military problem in the Japanese campaign, and units unlucky enough to strike endemic foci suffered heavily1. The epidenir iology of the disease was investigated in North Burma by the U.S. Typhus Commission, and in the Imphal area (Manipur, Assam) by a team based on the Scrub Typhus Research
openaire   +2 more sources

Studies on the ecology of Ascaris lumbricoides

Zeitschrift f�r Parasitenkunde, 1965
The results obtained from the experimental invasion of lambs and kids with a culture of infective Ascaris lumbricoides eggs show that this ascaris may parasitize in these animals.
openaire   +2 more sources

The study of function in behavioural ecology

Animal Biology, 2005
AbstractIn 1963, a landmark paper by Niko Tinbergen laid out the aims and methods of ethology and, in so doing, extended and clarified Julian Huxley's classification of the different ways in which one can investigate biological processes. I discuss the status of one of these "four Why questions", that of function or survival value, and the relationship
openaire   +1 more source

Studies on the Ecology of Anopheles Albimanus

The American Journal of Tropical Medicine and Hygiene, 1972
Summary In general, it seems that A. albimanus might be more zoophilic than anthropophilic, more exophagic than endophagic, more exophilic than endophilic, not particularly long-lived, and infrequently found harboring malaria parasites. Yet, this species is considered to have been responsible for the annual transmission of malaria to thousands of ...
openaire   +2 more sources

Understanding ecological groups under landscape fragmentation based on network theory

Landscape and Urban Planning, 2021
Jiansheng Wu, Zhe Feng, Yuhao Zhao
exaly  

Home - About - Disclaimer - Privacy