scholarly journals Comprehensive assessment of a flora and a productivity of green planting in the city of Abakan

2019 ◽  
Vol 16 ◽  
pp. 00041
Author(s):  
Elena Yu. Zhukova ◽  
Elena G. Lagunova
Keyword(s):  
Growth Rates ◽  
Vascular Plants ◽  
Steppe Zone ◽  
Urban Vegetation ◽  
Positive Trend ◽  
Seasonal Growth ◽  
Ecological Analysis ◽  
Terra Modis ◽  
The City ◽  
Series Criteria

The article provides information about the level of species diversity, biological and ecological composition, the dynamic of the vegetation productivity of a green planting in the city of Abakan (the steppe zone). The inventory of the flora revealed 288 species of higher vascular plants from 59 families and 183 genera. The basis of flora is the angiosperms, including 57 families (96.6 %), 179 genera (97.8 %), 282 species (97.9 %). The leading positions belong to the families Asteraceae (11.8 %), Poaceae and Rosaceae (10.8 %), Fabaceae (7.3 %). The most important genera in the flora were boreal ones − Carex, Artemisia (2.8 %), Potentilla (1.7 %). The ecological analysis showed the predominance of mesophytes (45.5 %). Perennial plants with clustered fleshy roots and short- rhizomatous ones (21.5 %) were a main biomorph. The analysis of the primary production of urban vegetation according to Terra MODIS data from 2000 to 2018 was carried out. The highest seasonal growth rates observed in 2001 and 2007, and the lowest ones were in 2004 and 2008. The average annual growth rates were 115±9 % for May, 107±5 % for June, 107±5 % for July, 119±14 % for July, and 120±11 % for August. The positive trend in the productivity of urban vegetation was established using the series criteria.

scholarly journals StalGrowth—A Program to Estimate Speleothem Growth Rates and Seasonal Growth Variations

Geosciences ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 187
Author(s):  
Rolf Vieten ◽  
Francisco Hernandez
Keyword(s):  
Growth Rate ◽  
Growth Rates ◽  
Environmental Parameters ◽  
Ion Concentration ◽  
Radiometric Dating ◽  
Seasonal Growth ◽  
Climate Signal ◽  
Show Evidence ◽  
Cave Monitoring ◽  
Calcium Ion Concentration

Speleothems are one of the few archives which allow us to reconstruct the terrestrial paleoclimate and help us to understand the important climate dynamics in inhabited regions of our planet. Their time of growth can be precisely dated by radiometric techniques, but unfortunately seasonal radiometric dating resolution is so far not feasible. Numerous cave environmental monitoring studies show evidence for significant seasonal variations in parameters influencing carbonate deposition (calcium-ion concentration, cave air pCO2, drip rate and temperature). Variations in speleothem deposition rates need to be known in order to correctly decipher the climate signal stored in the speleothem archive. StalGrowth is the first software to quantify growth rates based on cave monitoring results, detect growth seasonality and estimate the seasonal growth bias. It quickly plots the predicted speleothem growth rate together with the influencing cave environmental parameters to identify which parameter(s) cause changes in speleothem growth rate, and it can also identify periods of no growth. This new program has been applied to multiannual cave monitoring studies in Austria, Gibraltar, Puerto Rico and Texas, and it has identified two cases of seasonal varying speleothem growth.

Spurious Persistence and Unit Roots due to Seasonal Differencing: The Case of Inflation Rates / Künstliche Persistenz und Einheitswurzeln infolge saisonaler Differenzen: Das Beispiel Inflationsraten

2005 ◽  
Vol 225 (4) ◽  
Author(s):  
Uwe Hassler ◽  
Matei Demetrescu
Keyword(s):  
Growth Rates ◽  
Unit Root ◽  
Unit Roots ◽  
Annual Growth ◽  
Seasonal Growth ◽  
Seasonal Differences ◽  
Inflation Rates ◽  
European Economies ◽  
Seasonal Data

SummaryStudying annual growth rates (seasonal differences) in case of seasonal data produces much more persistence, autocorrelation and stronger evidence in favour of a unit root than analyzing seasonal growth rates (ordinary differences). First, this statement is quantified theoretically. Second, it is supported experimentally with simulations, and, finally, it is empirically illustrated with quarterly GDP deflators from 7 European economies.

The use of tidal growth bands in the shell ofCerastoderma eduleto measure seasonal growth rates under cool temperate and sub-arctic conditions

1980 ◽  
Vol 60 (4) ◽  
pp. 977-989 ◽  
Author(s):  
C. A. Richardson ◽  
D. J. Crisp ◽  
N. W. Runham ◽  
LI. D. Gruffydd
Keyword(s):  
Growth Rates ◽  
Seasonal Growth ◽  
Active Growth ◽  
Cerastoderma Edule ◽  
Instantaneous Growth ◽  
Cool Temperate ◽  
Growth Bands ◽  
Arctic Conditions

It has previously been shown inCerastoderma edulethat during periods of active growth the increments between successive growth bands each correspond to a period of tidal immersion. They can therefore be used to record instantaneous growth rates. For shells which, likeCerastoderma, conform to the Bertalanffy equation, such increments can be used independently of age and size to measure the Bertalanffy constant over brief intervals.

Vascular plants along an urban-rural gradient in the city of Tampere, Finland

2011 ◽  
Vol 14 (3) ◽  
pp. 361-376 ◽  
Author(s):  
Pertti Ranta ◽  
Ville Viljanen
Keyword(s):  
Vascular Plants ◽  
Urban Rural ◽  
The City

scholarly journals City of Tampa Urban Ecological Analysis

EDIS ◽  
2009 ◽  
Vol 2009 (1) ◽  
Author(s):  
Michael G. Andreu ◽  
Melissa H. Friedman ◽  
Shawn M. Landry ◽  
Robert J. Northrop
Keyword(s):  
Urban Forest ◽  
Ecological Assessment ◽  
Forest Resources ◽  
Ecological Analysis ◽  
Executive Summary ◽  
The City

FOR-203, a 2-page executive summary by Michael G. Andreu, Melissa H. Friedman, Shawn M. Landry, and Robert J. Northrop, summarizes a report of an ecological assessment of the city of Tampa’s urban forest resources. Published by the UF School of Forest Resources and Conservation, December 2008. FOR203/FR265: City of Tampa Urban Ecological Analysis (ufl.edu)

scholarly journals Insulin-like growth factor 1 and growth seasonality in reindeer (Rangifer tarandus) - comparisons with temperate and tropical cervids

Rangifer ◽  
1993 ◽  
Vol 13 (3) ◽  
pp. 91 ◽  
Author(s):  
J. M. Suttie ◽  
R. G. White ◽  
T. R. Manley ◽  
B. H. Breier ◽  
P. D. Gluckman ◽  
...  
Keyword(s):  
Growth Rates ◽  
Rangifer Tarandus ◽  
Plasma Concentrations ◽  
Growth Spurt ◽  
Seasonal Growth ◽  
High Quality ◽  
Rapid Weight Gain ◽  
Vernal Equinox ◽  
Ad Libitum ◽  
Autumn And Winter

Growth in temperate and arctic deer is seasonal, with higher growth rates in spring and summer while growth rates are low or negative in autumn and winter. We have measured IGF1 concentrations in the plasma of reindeer calves exposed to a manipulated photoperiod, indoors, of either 16 hours light followed by 8 hours dark each day (16L:8D) (n = 3) or 8L:16D (n = 3) from about the autumnal to the vernal equinox, to determine whether the seasonal growth spurt normally seen in spring is associated with changes in the circulating level of IGF1. A high quality concentrate diet was available ad libitum. The animals were weighed, and bled every 2 weeks and plasma samples assayed for IGF1 by radioimmunoassay. 6-8 weeks after the start of the study those calves exposed to 16L.-8D showed a significant increase in plasma IGF1 concentration which was maintained until the close of the experiment, 24 weeks after the start. In contrast IGF1 plasma concentrations in those calves exposed to a daylength of 8L:16D did not significantly alter during the study. The elevated IFG1 in the 16L:8D group was associated with rapid weight gain compared with the 8L:16D group. We have shown that the seasonal growth spurt is preceded by an elevation in plasma IFG1 concentration. Further, this elevation in IGF1 is daylength dependent. For comparison IGF1 and growth rate seasonal profiles from temperate and tropical deer are included. This comparison reveals that seasonal increases in IGF1 take place only in animals with a seasonal growth spurt. Thus IGF1 plasma level elevations seem most closely associated with the resumption of rapid growth in spring following the winter.

scholarly journals Spatial patterns of seasonal distribution of Corvidae (the case of urban habitats)

2016 ◽  
Vol 24 (2) ◽  
Author(s):  
A. V. Matsyura ◽  
А. А. Zimaroyeva ◽  
K. Jankowski
Keyword(s):  
Abundant Species ◽  
Common Species ◽  
Strong Increase ◽  
Winter Period ◽  
Positive Trend ◽  
Breeding Density ◽  
Buffer Zones ◽  
Green Areas ◽  
Hooded Crows ◽  
The City

Corvids in Zhytomyr city reach maximum density in the winter period. Rooks and Eurasian Jackdaws were the most abundant species in winter, usually feeding in multispecies flocks and forming collective roosts.Suburban green areas (buffer zones) were characterized by a considerably high diversity of Corvidae species: this habitat was occupied by all six species. We also registered the highest density of Eurasian Jays and Hooded Crows in this habitat. The green areas in the city center were also characterized by significant corvid density, especially during the breeding season. The maximum breeding density of Rooks was in these habitats, which held 6 of 12 identified urban colonies in Zhytomyr. We found that the European Magpies, Eurasian Jays, and Hooded Crows also had high breeding success here. Eurasian Jackdaws occurred here only in autumn and winter, when they fed together with Rooks on lawns, gardens, and parks. With stable snow cover the Rook density in habitats of the green areas decreased due to the depletion of food resources.The individual buildings zone of the city were characterized by the lowest density of all corvid species, except for European Magpies and Eurasian Jays. The number of common species (Rooks, Eurasian Jackdaws, and Hooded Crows) was low because of shortage of food resources, lack of sites for large roosting flocks and shortage of suitable nesting sites. However, Eurasian Magpies reached one of their highest densities in this habitat (12.8 birds/km2). This species was registered in habitats around private buildings all the year round, successfully nesting in the yards of private houses and on trees in the streets. Its breeding density was 11.2 birds/km2.During three years of research (2009–2012) the density of all corvids except for European Magpie, practically did not change, although we determined a slight positive trend for all the species. The strong increase in the number of Eurasian Jackdaws could be explained by the increasing density of wintering populations or due to the increasing number of migrants from more northern regions.

scholarly journals POISONIC VASCULAR PLANTS OF THE CITY SARATOV

2019 ◽  
Vol 17 (1) ◽  
pp. 39-54
Author(s):  
N. А. Durnova ◽  
◽  
I. A. Kuznetsova ◽  
A. S. Potapova ◽  
◽  
...  
Keyword(s):  
Vascular Plants ◽  
The City
Sign in / Sign up

Export Citation Format

Share Document