Comparative limnology, species diversity and biomass relationship of zooplankton and phytoplankton in five freshwater lakes in Kenya

Hydrobiologia ◽  
1994 ◽  
Vol 272 (1-3) ◽  
pp. 251-258 ◽  
Author(s):  
Jacqueline N. Uku ◽  
Kenneth M. Mavuti
Keyword(s):  
Species Diversity ◽  
Freshwater Lakes ◽  
Relationship Of ◽  
Comparative Limnology

scholarly journals Late Quaternary Ostracode From a Core in the Weddel Sea, Antartica

1999 ◽  
Vol 26 (1) ◽  
pp. 11 ◽  
Author(s):  
ROBIN WHATLEY ◽  
RAYMOND ROBERTS
Keyword(s):  
Species Diversity ◽  
North Atlantic ◽  
Late Quaternary ◽  
Weddell Sea ◽  
The Core ◽  
Constituent Species ◽  
Low Diversity ◽  
Relationship Of ◽  
The Antarctic ◽  
The Relationship

Fifty-nine samples from a 560cm gravity core of late Quaternary age (PS1003-2), collected at a depth of 2796m in the Weddell Sea, were examined for Ostracoda. The fauna was sparse but, from a total of 556 valves, the rather low diversity fauna of 19 species belonging to 11 genera and 3 families was identified. The study is principally concerned with species diversity, originations and extinctions, inter-relationships between species and the relationship of the fauna to different water masses. With respect to species diversity and origination/extinction patterns, two distinct phases are apparent: an initial diversification (originations only), followed by a phase of overall stable diversity (originations approximately matched by extinctions). The ostracod fauna is closely comparable to that described by authors as typical of North Atlantic Deep Water but is actually from the Antarctic Bottom Water (AABW). Two of the principal constituent species Henryhowella dasyderma (Brady) and H. asperrima (Ruess) seem to be mutually exclusive within the core. Changes in the fauna through the core seem to be related to climatic cycles.

Species diversity and phylogenetic relationship of earthworms in Mount Emei, China

2021 ◽  
Author(s):  
Jing Sun ◽  
Juzhen Wu ◽  
Wenjia Han ◽  
Caixia Qing ◽  
Zipeng Wen
Keyword(s):  
Species Diversity ◽  
Phylogenetic Relationship ◽  
Relationship Of

scholarly journals Species diversity of rotifers (rotifera: monogononta) in freshwater psammon with three new records to Vietnam

2021 ◽  
pp. 29-34
Author(s):  
Duong Quang Hung Duong
Keyword(s):  
Species Diversity ◽  
New Record ◽  
New Records ◽  
Freshwater Lakes ◽  
Central Coast ◽  
Rotifer Species ◽  
Rotifer Community ◽  
Study Results ◽  
Coast Of Vietnam

This study aims to evaluate the diversity of rotifers in psammon in the Central Coast of Vietnam. A total of 64 rotifer species belonging to 17 genera and 14 families were recorded in 10 samples collected at hygropsammon zones of freshwater lakes and ponds in Thua Thien Hue province. Lepadella cristata (Rousselet, 1893), Cephalodella tenuior (Gosse, 1886), and Lindia torulosa Dujardin, 1841 were new record to Vietnam rotifers fauna. Species from the families Lecanidae, Lepadellidae, and Trichocercidae are abundant (containing about 44%, 14%, and 12%, respectively) in the total rotifer species recorded. Psammonxenic species accounted for the largest percentage of the psammic rotifer community with 83%, followed by psammonphiles (11%) and psammonbionts (6%). Our study results enrich the data on the diversity and the ecology of rotifers in Vietnam.

scholarly journals Community analysis of Belarusian lakes: relationship of species diversity to morphology, hydrology and land use

2005 ◽  
Vol 27 (10) ◽  
pp. 1045-1053 ◽  
Author(s):  
Alexander Y. Karatayev ◽  
Lyubov E. Burlakova ◽  
Stanley I. Dodson
Keyword(s):  
Land Use ◽  
Species Diversity ◽  
Community Analysis ◽  
Relationship Of

Birds in a Tropical Mosaic - the Distribution of Bird Species in Relation to Vegetation Patterns

1988 ◽  
Vol 15 (2) ◽  
pp. 171 ◽  
Author(s):  
JCZ Woinarski ◽  
SC Tidemann ◽  
S Kerin
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Bird Species ◽  
Bird Density ◽  
Closed Forest ◽  
Bird Distribution ◽  
Relationship Of ◽  
The Relationship ◽  
Bird Species Diversity

Wilson and Bowman (1986) classified and mapped vegetation in a complex mosaic at Howard's Peninsula, Northern Territory. The relationship of bird distribution to this vegetation classification was considered through 10 repeat censuses of 5 replicate quadrats in each of 20 vegetation units. Censusing period was April-May. 118 bird species were recorded. Closed forests (3 units), mangroves (2 units) and swamplands (3 units) all had distinctive bird species compositions, but bird species showed a relatively poor relationship with the classification of woodland and grassland units. Eucalyptus woodlands regrowing after devastation by a cyclone in 1974 had similar bird species diversity and density to undamaged woodlands, though somewhat different bird species composition. Eucalyptus woodlands with a dense shrubby understorey had significantly greater bird density and species diversity than those with open or grassy understories and their bird species composition showed appreciable association with that of closed forests. Closed forest and, less so, mangrove units had highest diversity and density (despite their relatively small proportion in the study area and in the region generally), probably because they offered a wider range of foraging possibilities.

scholarly journals The method of determining the silvicultural and inventory indices of urban spaces with the use of the equations of communication

2018 ◽  
Vol 7 (4) ◽  
pp. 82-90
Author(s):  
Василий Ковязин ◽  
Vasiliy Kovyazin ◽  
Тхи Нгуен ◽  
Thi Nguen
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Forest Inventory ◽  
Urban Spaces ◽  
Tree Age ◽  
Coefficient Of Determination ◽  
Relationship Of ◽  
First Time ◽  
The Relationship ◽  
Trees And Shrubs

The purpose of our research was to study the species diversity of trees and shrubs in the memorial Park across three centuries after its formation. Such research we carried out for the first time. In addition, we conducted measurements of forest inventory indices of the studied tree species. The calculated equation of the relationship of tree age with a height and diameter that can be measured. The mathematical models should be used to determine the age of trees, as the drill age is not recommended to use for traditional purposes in the memorial parks. The tightness of the obtained relations inventory indices in the form of a parabola is quite high. The coefficient of determination is 0.82 to 0.99, depending on the type of wood.

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