Conservation Value and Habitat Diversity of Fluvial Lakes and Gravel Pits in River-Floodplain Systems

2021 ◽  
pp. 53-72
Author(s):  
Dušanka Cvijanović
1995 ◽  
Vol 2 (3) ◽  
pp. 268 ◽  
Author(s):  
M. G. Brooker ◽  
C. R. Margules

Accurate assessment of the relative conservation value of remaining areas of native vegetation is of primary importance to both land planners and land managers wishing to conserve the biodiversity of an area. Selection procedures aimed at identifying sets of patches for nature reserve networks stress the importance of retaining beta diversity (or diversity of habitats). This paper describes a new procedure that incorporates a measure of relative alpha diversity (or within habitat diversity) of plant species, as well as beta diversity, using the Kellerberrin area of the Western Australian wheatbelt as an example. The inclusion of such an algorithm in selection procedures is justified since beta and alpha diversity, together with genetic diversity, determine the overall biotic heterogeneity of an area. A five-step ranking method is used to prioritize remnant patches of native vegetation with respect to plant diversity, both at regional and local scales. Ranking at a regional scale is important for state authorities able to deal with only a limited number of widely dispersed sites such as nature reserves; whereas ranking at the local scale provides a guideline for the conservation of biodiversity at a level where many land use and management decisions are made by local government and private citizens.


1994 ◽  
Vol 21 (4) ◽  
pp. 433 ◽  
Author(s):  
DR Grover ◽  
PJ Slater

The bird species composition of nine remnants of Melaleuca quinquenervia forest in NE Brisbane, Queensland, was censused from March 1992 to March 1993 to investigate the effect of forest fragmentation and fragment characteristics. Remnant area was a correlated with the total number of bird species and the number of raptors occurring, while understorey vegetation density was related to the number of forest and understorey bird species. The species composition of the M. quinquenervia remnants was compared with that of the Cooloola National Park and with that of eucalypt [Eucalyptus] remnants in lowland SE Queensland. Even the small M. quinquenervia remnants around Brisbane play an important role in conserving the avian fauna of the region by providing habitat and refuges for migrant, nesting, locally rate and uncommon species, and species not commonly found in other forest types. Future recommended management involves the maintenance of size, habitat diversity and understorey vegetation density, the prevention of disturbance and the preservation of swampy areas and ponds.


Author(s):  
D.I. Engalychev ◽  
N.A. Engalycheva ◽  
A.M. Menshikh

Представлены экспериментальные данные о влиянии капельного орошения на урожайность и качество плодов томата при выращивании культуры в открытом грунте Московской области. На плодородных аллювиальных луговых почвах Москворецкой поймы при соблюдении агротехники без орошения в среднем за три года исследований в полевых условиях получена урожайность томата F1 Донской 31,9 т/га, с орошением 48,5 т/га, в т.ч. стандартной продукции 42,6 т/га.The article presents experimental data on the effect of drip irrigation on the yield and quality of tomato fruits when growing crops in open ground of the Moscow Region. On fertile alluvial meadow soils of the Moscow river floodplain, with the observance of agricultural technology without irrigation, the field yield of tomato hybrid F1 Donskoi on average for three years of research was 31.9 t/ha, with irrigation 48.5 t/ha, incl. standard production 42.6 t/ha.


2005 ◽  
pp. 82-92
Author(s):  
G. S. Taran

The paper characterizes poplar (Populus alba, P. nig­ra) and white willow (Salix alba) forests of the Irtysh and the Black Irtysh river floodplain, together with the silvery salt tree (Halimodendron halodendron) community of the Black Irtysh river floodplain. The Black Irtysh floodplain willow and poplar forests are separated into a new alliance, Rubio dolichophyllae—Populion albae Taran all. nov. (Salicetalia purpureae Moor 1958, Salicetea purpureae Moor 1958), which includes the associations Rubio dolichophyllae—Popu­letum albae Taran 1997 and Rubio dolichophyllae—Salicetum albae Taran ass. nov. The Halimodendron halodendron community is probably related to the class Nerio-Tamaricetea Br.-Bl. et de Bolós 1958. White poplar forests in the Irtysh R. upper reaches, described within the Semipalatinsk city limits, belong to the association Heracleo dissecti—Populetum albae Taran 1997 and its subassociation H. d. —P. a. lamietosum albi Taran 1997 (Equiseto hyemalis—Populion nigrae Taran 1997, Salicetalia purpureae Moor 1958).


2008 ◽  
pp. 68-75 ◽  
Author(s):  
G. S. Taran

In the Ob river floodplain between the mouths of its tributaries Vakh and Tym (within the limits of Aleksandrovskiy district of Tomsk region), phytocoenoses belonging to 9 associations and 2 communities of Braun-Blanquet classification vegetation classes are listed. Class Lemnetea is represented by associations Ricciocarpetum natantis (Segal 1963) Tx. 1974, Lemnetum trisulcae Soó 1927, Stratiotetum aloidis Miljan 1933; class Potametea is done by asso­ciations Potametum perfoliati Koch 1926, Myriophylletum sibirici Taran 1998, Myriophylletum verticillati Soó 1927, Potametum graminei Koch 1926, Potametum pectinati Carstensen 1955, Nymphoidetum peltatae (All. 1922) Bellot 1951, as well as Sagittaria natans and Potamogeton natans—Ceratophyllum demersum communities. The syntaxa distribution in Western Siberia and adjoining territories is characterized.


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