نتایج جستجو برای: margalef
تعداد نتایج: 226 فیلتر نتایج به سال:
Just like any other ecosystem, coastal and estuarine ecosystems are complex and dynamic in terms of their species structure and functioning. The resilience of the different types of coastal ecosystem to change depends on the structural complexity of the different trophic relationships within the local food web, the connectivity between habitats and larger (eco)system units, and the ecological a...
This study investigated the biodiversity, phylogeny, and antifungal activity of endophytic fungi isolated from Zanthoxylum bungeanum. A total of 940 isolates obtained were grouped into 93 morphotypes, 43 species, and 23 genera, which were authenticated by molecular identification based on rDNA internal transcribed spacer (ITS) sequence analysis. A high diversity of endophytic fungi from Z. bung...
We studied the heterogeneity of soil weed seed-bank in a rice-wheat rotation system after long-term application of different organic or non-organic fertilizers, and the effects of major nutrients on the characteristics of the weed seed-bank. The soil was sampled in the Taihu area after a 31-year long-term fertilization experiment. Weed seeds were identified and counted in the surface soil of 12...
La restauración con especies nativas del Matorral espinoso tamaulipeco (MET) se está realizado dado el alto grado de degradación que sufre este ecosistma. En presente estudio, evaluó la vegetación porte y regeneración en un área MET posterior a 5 años ser restaurado. A cada individuo, le midió altura total, diámetro basal copa, sitios 200 m2 para arbórea arbustiva, 1 regeneración. Se determinó ...
The present study mainly focused on the diversity of spider fauna in agro-ecosystem Mahabubnagar district during Kharif and Rabi seasons 2020-21. sampling was collected at monthly intervals by different methods (in situ counts, net sweeping, pitfall traps litter sampling). A total 30 species were identified which, Araneidae family is represented 8 belonging to four genera followed Salticidae (5...
Abandonment of arable lands is the starting point of vegetation succession. The trajectory and speed of succession can be different according to the time of abandonment. The aim of this study is to assess the effect of abandonment periods on species richness, diversity and functional groups in shrublands and grasslands of Shirmard rangelands in Chaharmahal va Bakhtiri, Iran. A total of 96 abond...
Railway construction is one of the important activities in the development of any country and in developing countries, the need for roads is one of the main axes of development. Railway construction operations can effect on desert rangelands around railway. This study investigates the effects of Yazd-Eghlid railway construction on vegetation diversity and richness in the rangelands of Kalmand-...
The purpose of this work was to describe the population patterns of Anastrepha in three municipalities of the state of Roraima, Brazil, via faunistic analysis. Weekly collections were performed from January through December 2008, using McPhail traps containing 5% hydrolysed protein, in domestic orchards in the municipalities of Boa Vista, Bonfim and Pacaraima. We captured 301 females of Anastre...
Las barrancas de la ciudad Puebla presentan un relicto bosque encino (Quercus: Fagaceae) que se encuentra sometido a fuertes presiones humanas. A pesar importancia dicho representa para una urbe carente zonas arboladas, no existe información sobre su riqueza, diversidad y afinidad geográfica. De ahí los objetivos este trabajo, inventariar componentes flora vascular, determinar patrones distribu...
Forest degradation influences ecosystem sustainability and reduces plant species diversity. Plantations with coniferous trees in degraded ecosystems help the native species to become established and play a major role in preserving and improving plant diversity. This study aims at measuring and comparing the woody species diversity across different age classes of Pinus brutia and Cupressus horiz...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید