Results 221 to 230 of about 372,823 (264)
Some of the next articles are maybe not open access.
No Special Status: Ecologies Of Agency In Ecology
Maska, 2022This paper is based on the lecture held on 11th May 2022 in the context of Maska seminar at Nova Pošta and it examines general conceptual distinctions at work in the history of the life sciences (namely agency, form, force, and form) and how these have been emphasized or neglected in the various ontological and ecological turns within the humanities ...
openaire +1 more source
Assessing the Threat Status of Ecological Communities
Conservation Biology, 2009Abstract: Conservationists are increasingly interested in determining the threat status of ecological communities as a key part of their planning efforts. Such assessments are difficult because of conceptual challenges and a lack of generally accepted criteria.
Emily, Nicholson +2 more
openaire +2 more sources
Evolution and current status of ecological phytochemistry
Phytochemistry, 2007Phytochemical studies have experienced a great deal of change during the last century, not only regarding the number of compounds described, but also in the concept of phytochemistry itself. This change has mainly been related to two key points: the methodologies used in phytochemical studies and the questions regarding 'why secondary metabolites ...
Francisco A, Macías +2 more
openaire +2 more sources
Benthic ecological status of Algerian harbours
Marine Pollution Bulletin, 2017This work is an overview of all available benthic data collected in the Algerian harbours between 1983 and 2001. So, total of 571 stations were reported in the 10 major Algerian harbours along the Algerian coast (1200km). Two main categories of harbours were distinguished according to their hydrodynamic regime and volume of water exchange between inner
Dauvin, Jean-Claude +3 more
openaire +4 more sources
THE ECOLOGY AND TAXONOMIC STATUS OF THE LACTOBACILLI
Annual Review of Microbiology, 1976PHYSIOLOGY AND BIOCHEMISTRy 285 Lactate Production and Lactic Acid Pehydrogenases . .. . . . . . . . . . . .... . . . . . , . . . . . .. . . . . . . . . . . . . . . . . 285 Malate Metabolism .. . . . . . . . ... . . . . . . . . . . . . . . . ... . . ... . . . . . ... . . . . . . . . . . ... ... . . . . ... . . . ... . . . ... . . . . ... . . . . . . .
openaire +2 more sources
The ecological status of bracken
Botanical Journal of the Linnean Society, 1976Information about the morphology of bracken (Pteridium aquilinum (L.) Kuhn var. aquilinum) and the chief nutrients in the frond at different times of the year introduce an account of litter production and its accumulation in relation to the behaviour of frond, root and rhizome systems.
openaire +1 more source
An EPA program for monitoring ecological status and trends
Environmental Monitoring and Assessment, 1991Despite hundreds of millions of dollars spent annually in the United States on environmental monitoring, policy and decision makers seldom have ready access to monitoring data to aid in prioritizing reasearch and assessment efforts or to assess the extent to which current policies are meeting the desired objectives. EPA is currently conducting research
J J, Messer +2 more
openaire +2 more sources
The Status, Predicament and Countermeasures of Global Ecological Crisis
Advanced Materials Research, 2013With the rapid development of science and technology, human cognition towards the nature has obtained great progress. They have created abundant wealth and caused serious damage to nature as well. The extent of environmental pollution has never been serious than ever before.
Li Jiang, Xiang Lin He, Erkki Hiltunen
openaire +1 more source
Indicators of the Ecological Status of Agroecosystems
1992Agroecosystems can be viewed as production systems that provide food and fiber products essential for the health and well-being of humankind. This view is not incorrect, but it is incomplete. Agricultural commodities such as crops and livestock are one of several agroecosystem components (Fig. 35.1).
Julie R. Meyer +6 more
openaire +1 more source