Results 21 to 30 of about 8,716,422 (261)

Phytosociology and ecological framework of forest tree species in the Toormang Valley, Dir Lower, Hindu Kush Range, Pakistan [PDF]

open access: yesBrazilian Journal of Biology
The phytosociological survey was conducted during 2018-2020. The research area was classified into five ecological zones based on habitat, physiognomy and species composition.
Tahir Hameed   +10 more
doaj   +1 more source

The hidden microbial ecosystem in the perennial ice from a Pyrenean ice cave

open access: yesFrontiers in Microbiology, 2023
Over the last years, perennial ice deposits located within caves have awakened interest as places to study microbial communities since they represent unique cryospheric archives of climate change.
Fátima Ruiz-Blas   +12 more
doaj   +1 more source

Influence of abiotic factors on phytoplankton diversity and distribution in an atoll environment

open access: yesActa Botânica Brasílica, 2022
Taxonomic investigations of phytoplankton community structure are very important for understanding the dynamics of these organisms in places like reefs, which present broad hydro-biological variation.
Marina C. Jales   +4 more
doaj   +1 more source

Experiences of environmental professionals in practice [PDF]

open access: yes, 2011
Purpose: The purpose of this paper is to explore the labor market position of environmental science graduates and the core competencies of these environmental professionals related to their working practice.
Bootsma, M.C.   +9 more
core   +2 more sources

Forecasting New COVID-19 Cases and Deaths Based on an Intelligent Point and Interval System Coupled With Environmental Variables

open access: yesFrontiers in Ecology and Evolution, 2022
The outbreak of Coronavirus disease 2019 (COVID-19) has become a global public health event. Effective forecasting of COVID-19 outbreak trends is still a complex and challenging issue due to the significant fluctuations and non-stationarity inherent in ...
Zongxi Qu   +7 more
doaj   +1 more source

THE IMPACT OF RATIONALIZING THE USE OF PESTICIDES ON THE DEVELOPMENT OF EGYPTIAN EXPORTS OF POTATOES [PDF]

open access: yesJournal of Environmental Science, 2022
The research mainly aims to identify the relative impact of irrational use of pesticides on the quantity of Egyptian potato exports in order to identify appropriate policies and mechanisms to reduce the negative effects of this use, which contributes to ...
Fatima Moussa   +4 more
doaj   +1 more source

Response mechanisms of sediment microbial communities in different habitat types in a shallow lake

open access: yesEcosphere, 2019
Microorganisms are important drivers of material and energy circulation in freshwater ecosystems. Altered aquatic sedimentary environments disturbed by human activities affect microbial community composition.
Wenjun Wang   +7 more
doaj   +1 more source

Technical efficiency of Greek olive growing farms: a robust approach with panel data

open access: yesSpanish Journal of Agricultural Research, 2013
The assessment of technical efficiency in the agricultural sector and the influence of exogenous (environmental) variables on the production process has been a major topic of economic research especially for managers and policy makers.
S. Kourtesi, P. Fousekis, A. Polymeros
doaj   +1 more source

Richness of ferns and lycophytes from Tijuca National Park, an urban forest

open access: yesRodriguésia, 2023
Tijuca National Park (TNP) covers an area corresponding to 3.5% of the city of Rio de Janeiro. It is an Atlantic Rainforest fragment with peaks and watersheds that make this protected area a mosaic of habitats.
Claudine Massi Mynssen   +4 more
doaj   +1 more source

pH Drives Differences in Bacterial Community β-Diversity in Hydrologically Connected Lake Sediments

open access: yesMicroorganisms, 2023
As microorganisms are very sensitive to changes in the lake environment, a comprehensive and systematic understanding of the structure and diversity of lake sediment microbial communities can provide feedback on sediment status and lake ecosystem ...
Haiguang Pu   +3 more
doaj   +1 more source

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