Influence of Floristic Diversity on Songbird Nesting Preferences in a Suite of Adjacent Reconstructed Grasslands (Wisconsin)

2008 ◽  
Vol 26 (3) ◽  
pp. 195-198 ◽  
Author(s):  
S. P. Schottler ◽  
J. Port ◽  
T. DeGolier
Keyword(s):  
Floristic Diversity ◽  
Nesting Preferences

Vegetation of sandy coasts of Lake Baikal

2016 ◽  
pp. 46-66
Author(s):  
Тю Фю Dulepova
Keyword(s):  
Lake Baikal ◽  
Lake Basin ◽  
Floristic Diversity ◽  
Southern Siberia ◽  
Irkutsk Region ◽  
Relief Formation ◽  
The Republic ◽  
River Valleys ◽  
High Degree ◽  
Semiarid Conditions

The aeolian processes play an important role in the relief formation under the semiarid conditions of the intermountain basins of Southern Siberia. Ancient sand landforms occur in different regions of Siberia — the Ob, Chuya, Аley, Yenisei, Аngara, Selenga, Chikoy, Khilok and Chara river valleys and Lake Baikal coasts. The sandy coasts of Lake Baikal are of great interest in terms of floristic diversity determined by a high degree of endemism. Despite centuries of study of the lake basin, sand vegetation is poorly described in the literature. This study presents an analysis of 184 relevés of psammophytic vegetation from the Republic of Buryatia (Severobaikalsky, Barguzinsky, Pribaikalsky districts) and Irkutsk region (Olkhon Island) obtained in 2009–2014.

Floristic Diversity and Fundamental Features of Wild Seed Plants in Jiangxi Province

2012 ◽  
Vol 30 (1) ◽  
pp. 22
Author(s):  
Xian-Lan DENG ◽  
Yang WU ◽  
Yu-Cheng LIU ◽  
Zhuo ZHENG
Keyword(s):  
Jiangxi Province ◽  
Seed Plants ◽  
Floristic Diversity ◽  
Wild Seed

Floristic diversity of the Tagdempt region, Tiaret Mountains, Algeria

2020 ◽  
Vol 40 (4) ◽  
pp. 296-299
Author(s):  
Nouar Belgacem ◽  
Hasnaoui Okkacha ◽  
Maamar Benchohra ◽  
Miara Mohamed Djamel
Keyword(s):  
Floristic Diversity

NEST SITE SELECTION BY BUMBLE BEES (HYMENOPTERA: APIDAE) IN SOUTHERN ALBERTA

1978 ◽  
Vol 110 (3) ◽  
pp. 301-318 ◽  
Author(s):  
K. W. Richards
Keyword(s):  
Site Selection ◽  
Nest Site ◽  
Niche Overlap ◽  
Nest Site Selection ◽  
Bumble Bees ◽  
Social Parasites ◽  
Southern Alberta ◽  
Nesting Sites ◽  
Coexisting Species ◽  
Nesting Preferences

AbstractThe niche breadth and overlap in nesting preferences of 15 species of bumble bees were investigated in Alberta. Some of the factors that influence the distribution of nesting sites and abundance of species and permit the species to coexist in sympatry are discussed. Artificial domiciles were used as potential nesting sites. Some species were specialists in terms of nest site selection while others were generalists. The few natural nests found, the long periods spent by queens searching for nests, the high frequency of usurpation or direct interference and death of intruders, and the frequency of high niche overlap values between species are evidence that nesting sites are limited and are incompletely partitioned among the coexisting species. Usurpation also demonstrates the competition among individuals and species. Phenological differences in nest establishment influence the competition among the species. Camouflaging of tunnels presumably reduces the intensity of usurpation and protects queens and the brood from inclement weather and from social parasites (e.g., Psithyrus) and predators.

scholarly journals Nesting Preferences for Two Woodpecker Species (Dendrocopos Major and Dendrocopos Medius) in Comana Forest, Southern Romania/ Preferințele de cuibărit la două specii de ciocănitori (Dendrocopos Major şi Dendrocopos Medius), în Pădurea Comana, Sudul României

2015 ◽  
Vol 57 (1) ◽  
pp. 35-45 ◽  
Author(s):  
Ioana Damoc ◽  
Tiberiu Sahlean ◽  
Roxana Ion ◽  
Mihaela Ion ◽  
Lotus Elena Meşter
Keyword(s):  
Food Sources ◽  
Pedunculate Oak ◽  
Large Trees ◽  
Nesting Sites ◽  
Turkey Oak ◽  
Nest Height ◽  
Middle Spotted Woodpecker ◽  
Dendrocopos Major ◽  
Nesting Preferences

Abstract The main goal of this study is to get a better insight of the habitat requirements for the Great- and Middle Spotted Woodpeckers. Woodpeckers are forest specialists, threatened all over Europe mainly by the loss of forest habitats and also by the loss in quality of the habitat by reducing the food sources and nesting sites. Both species showed a strong preference for oaks, lime, large trees and dead wood for nesting, but Middle Spotted Woodpecker proved to be more selective in terms of tree species. Nest-height was influenced by tree diameter. Both species have the same nesting preferences for Turkey oak, lime and Pedunculate oak, in a Quercetum farnetto-cerris type of forest. The orientation of the nest hole on the tree was mainly NE-E-SE for Middle Spotted Woodpecker and N-NE-E for Great Spotted Woodpecker.

Study of the floristic diversity of Acacia tortilis population- in Bechar region (Southwestern Algeria)

2019 ◽  
Vol 9 (4) ◽  
pp. 133-141
Author(s):  
Guenaia Abdelkader ◽  
Hasnaoui Okkacha ◽  
Bekkouche Assia
Keyword(s):  
Sustainable Use ◽  
Diversity Indices ◽  
Floristic Diversity ◽  
Acacia Tortilis ◽  
Important Species ◽  
Disturbance Index ◽  
Moricandia Arvensis ◽  
Biological Spectrum ◽  
Flora Diversity ◽  
Risk Loss

For the management and sustainable use of natural bio-resources it is necessary to quantify and valorize this heritage. In the case of the floristic diversity of Acacia tortilis, the only natural woody stand in Bechar-Algeria, scanty studies have been undertaken. Hence in this study, the general overview of the flora diversity state in the 58 plots of 9 stations was made by the analysis of various indexes: Shannon, Simpson, species evenness, floristic richness, disturbance index, biological and biogeographically spectra. We listed 103 species belonging to 37 families and 85 genus, the important plants belonged to the Asteraceae and Brassicaceae. The most important species are: Pulicaria crispa, Asteriscus graveolens, Launea arborescens, Matricaria pubescens, Moricandia arvensis, Farsetia aegyptiaca, Zilla macroptera. The biological spectrum indicated a dominance of the Chamaephytes and the predominance of the Therophytes; the phytogeographic spectrum showed an important endemism (44%) in which 36% species belong to the SaharoArabian element; The Shannon, Simpson, and Evenness diversity indices, were relatively high, thereby indicating a diversity variation between the stations, witch increased South towards North. It was prominent in Zouzfana, Taghit, and Abadla stations, and the higher values of disturbance Index reflected the greater level of anthropization in these courses. The future accumulation of this regression, many risk loss of the last naturally wall of desertification, biodiversity, national economy and sand advancement. Therefore, it is recommended to apply pastures protection, pastoral charge control, and elaborate an environmental value of this species. 

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