Results 121 to 130 of about 9,181 (252)

Monitoring and State Assessment of Forest Ecosystems [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2008
A methodology of monitoring and state assessment of environment based on functional hierarchy of biological systems is presented, approaches to resource and ecological assessment are divided, and studied object is determined.
Anatoliy G. Dyukarev, Nina N. Pologova
doaj  

The role of mosaicity of the post-agriculture area of the Kampinos National Park in determining the diversity of species of spider wasps (Hymenoptera: Pompilidae)

open access: yesEuropean Journal of Entomology, 2012
From 2000 to 2006 a total of 52 CPUE samples of spider wasps (Hymenoptera: Pompilidae) were collected in the mosaic landscape of the Kampinos National Park (Poland), which is a UNESCO Biosphere Reserve.
Katarzyna SZCZEPKO   +2 more
doaj   +1 more source

Evaluation of the current state of aquatic ecosystems and the problems of the protection of biological resources during development of kruzenshternskoye gcf [PDF]

open access: yes, 2015
The results of studies of the current state of freshwater ecosystems and their biotic components in the western part of the Yamal Peninsula are presented in the article.
Bogdanov, V. D.   +4 more
core   +1 more source

AN ASSESMENT OF THE CONDITION OF THE WATER OF LAKE ONEGO INFLOWING STREAMS UNDER HUMAN IMPACT INFLUENCE USING MICROBIOLOGICAL AND TOXICOLOGICAL PARAMETERS

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
The quantitative growth and spatial dynamics of major ecotrophic groups of heterotrophic bacterioplankton in rivers Lososinka and Neglinka in Petrozavodsk(oligocarbophilic, saprophytic, phenol-resistant, hydrocarbon oxidizing, and total coliform) are ...
Elena Tekanova   +2 more
doaj   +1 more source

Bioindication of Urban Air Polycyclic Aromatic Hydrocarbons Using Petunia Hybrida

open access: yesCivil Engineering Journal, 2019
Different ways can be used to determinate the effects of hydrocarbons on plants: the bioindication with plants is one of these methods. It consists of using sensitive plants like Petunia hybrida to evaluate the urban levels of hydrocarbon pollution.
F. Benaissa   +4 more
semanticscholar   +1 more source

SELF-PURIFICATION OF THE DNIPROVS’KE RESERVOIR AS A LEADING FORMING FACTOR FOR THE ECOLOGICALLY SAFE HABITAT OF FISHES

open access: yesRibogospodarsʹka Nauka Ukraïni, 2014
Purpose. To study the development of the water quality of the Dniprovs’ke reservoir, which is a water of body of complex including fisheries importance and is characterized by an increased anthropogenic pressure as a result of the processes of the ...
А. Dvoretsky   +3 more
doaj   +1 more source

Modifications in the structure of the lichen Cladonia thallus in the aftermath of habitat contamination and implications for its heavy-metal accumulation capacity [PDF]

open access: yes, 2017
Phenotypic traits of lichens can be greatly modified by environmental factors. Granulose thalli on soil and podetia, densely covered with granules, referring to common and widespread lichen Cladonia cervicornis subsp.
Boroń, Piotr   +3 more
core   +1 more source

Evaulation of the Quality of an Aquatic Habitat on the Drietomica River

open access: yesSlovak Journal of Civil Engineering, 2014
The ecological status of a river is influenced by many factors, of which the most important are fauna and flora; in this paper they are defined as a habitat. During the years 2004, 2005, 2006 and 2011, research on the hydroecological quality of a habitat
Stankoci Ivan   +2 more
doaj   +1 more source

Where Have All the Young Trees Gone? A Big Picture Look at the Lack of Seedlings and Saplings in Urban Forests [PDF]

open access: yes, 2013
We take a big picture look at the lack of seedlings, saplings and young trees in urban forests using our research in Forest Park in Portland, Oregon. Broshot, who measured vegetation at 25 sites in Forest Park, recorded significantly fewer live seedlings,
Broshot, Nancy   +2 more
core   +1 more source

L'évaluation du risque toxique dans les milieux aquatiques - Glossaire

open access: yesSciences, Eaux & Territoires, 2010
L'évaluation du risque toxique dans les milieux ...
Rédaction SET
doaj   +1 more source

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