Results 21 to 30 of about 10,486,597 (353)

Diversity of Shallow-Water Species in Prawn Trawling: A Case Study of Malindi–Ungwana Bay, Kenya

open access: yesDiversity, 2022
Bottom trawling is a common fishing method that targets bottom-dwelling fisheries resources. It is non-selective and large amounts of by-catch are discarded, raising serious sustainability and ecosystem conservation concerns.
Esther N. Fondo   +6 more
doaj   +1 more source

Effects of Vetiveria zizanioides on the Restoration and Succession of Coal Gangue Mountain Plant Communities in Different Years

open access: yesDiversity, 2022
The restoration of vegetation on coal gangue mountains has always been an area of concern, and therefore, an important area of research. Liupanshui city in Guizhou province, China, has a large number of coal gangue mountains, and for this reason, was ...
Honggang Shuai   +7 more
doaj   +1 more source

Change in Composition of the Anopheles Gambiae Complex and its Possible Implications for the Transmission of Malaria and Lymphatic Filariasis in North-Eastern Tanzania. [PDF]

open access: yes, 2012
A dramatic decline in the incidence of malaria due to Plasmodium falciparum infection in coastal East Africa has recently been reported to be paralleled (or even preceded) by an equally dramatic decline in malaria vector density, despite absence of ...
A Mahande   +52 more
core   +4 more sources

Botanical and ecological characteristics of trees and shrubs plantings in the Dovhyntsivo Park (Kryvyi Rih)

open access: yesІнтродукція Рослин, 2012
Trees and shrub planting at Dovhyntsivo Park (Kryvyi Rih, Dnepropetrovs’k reg.) presented 74 species belonging to 57 genera and 27 families. Most of the rocks park characterized medium-high level of vitality, middle and high level of decoration.
V.M. Savos'ko, O.U. Kopych
doaj   +1 more source

Contrasting multi-taxa diversity patterns between abandoned and non-intensively managed forests in the southern Dolomites [PDF]

open access: yes, 2017
The abandonment of silvicultural activities can lead to changes in species richness and composition of biological communities, when compared to those found in managed forests.
Campagnaro, T   +8 more
core   +2 more sources

Efficiency of the protection system and treatment of the soil against harmful organisms in the maize crops for grain

open access: yesПередгірне та гірське землеробство і тваринництво, 2021
In recent years, there has been an annual deterioration in the phytosanitary condition of crops. One of the main factors of this phenomenon was the destabilization of the land use system and the disturbance or absence of crop rotations, which led to a ...
О. V. SNIZHOK
doaj   +1 more source

Estimating sample representativeness in a survey of stream caddisfly fauna [PDF]

open access: yes, 2006
Obtaining an adequate and representative sample is a continuing challenge of community ecology. The present study focuses on what sample area represents adequately the structural composition of the caddisfly fauna of a riffle, at a given sampling ...
Erős, Tibor, Schmera, Dénes
core   +1 more source

Effects of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) on understorey layer species diversity in managed forests

open access: yesJournal of Forest Science, 2014
In total, 67 parallel plots were chosen from the database of 153 phytosociological relevés made in the Douglas-fir and parallel Norway spruce, European Beech and oak-dominated stands to find influences of this introduced tree species on the understorey ...
V. Podrázský   +3 more
doaj   +1 more source

Soil Microbial Networks Shift Across a High-Elevation Successional Gradient. [PDF]

open access: yes, 2019
While it is well established that microbial composition and diversity shift along environmental gradients, how interactions among microbes change is poorly understood.
Bueno de Mesquita, Clifton P   +9 more
core   +2 more sources

Inter- and intrafield distribution of cereal leaf beetle species (coleoptera : chrysomelidae) in Belgian winter wheat [PDF]

open access: yes, 2019
Cereal leaf beetles (CLBs), a group of chrysomelid beetles of the genus Oulema (Coleoptera: Chrysomelidae), are well-known pest insects of small-grain cereals in many countries of the Northern hemisphere.
De Baets, Bernard   +8 more
core   +1 more source

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