scholarly journals Population trends of Finnish Lepidoptera during 1961-1996

1997 ◽  
Vol 8 (3) ◽  
pp. 121-143 ◽  
Author(s):  
Kauri Mikkola
Keyword(s):  
Environmental Changes ◽  
Early Spring ◽  
Climatic Conditions ◽  
Population Trends ◽  
Slow Development ◽  
High Incidence ◽  
Collecting Methods ◽  
Noctuid Species ◽  
Declining Species ◽  
The 19Th Century

Based on a query and on a literature review, the population trends of Finnish Lepidoptera since Kaisila's (1962) thorough overview are analysed. Changes in the belt of three coastal biogeographical provinces (V-EK) show significant correlations with those in three inland provinces (St-ES). Furthermore, positive trends in these belts are reflected as new provincial finds north of them. The spatial synchrony is supposedly caused by spatially conelated climatic conditions. This is supported by evidence of synchronous trends in species grouped according to their overwintering stages (Marttila 1991, Bruun 1992). The increased migration rate, indicated by the new provincial finds, is probably a consequence of high population densities, and does not explain the synchrony itself. Kaisila's division into expansive and fluctuant species is considered to be a historical rather than a biological characterization. During the 19th century, the reporting of new lepidopteran species was delayed by about 50 years if they were night-active vs. day-active. The low numbers of observers and slow development of collecting methods have caused further analytical uncertainties. Some of Kaisila's expansive species may actually have been inhabitants of Finland for long periods of time. At present, drainage of peatlands and overgrowth of meadows are the most adverse environmental changes causing a decline of lepidopterans, particularly of the butterflies. Increase of bushiness and reeds appear to have positively affected many geometrid and noctuid species. The high incidence of new provincial finds and of species new to the country in the 1990s as well as positive trends in late-autumn and early-spring species supposedly reflect the ongoing climatic change. The Finnish lepidopteran fauna is undergoing a dynamic phase: around 30 recent invaders and 40 older expansive species are spreading, while fewer are retreating; the declining species are mainly habitat specialists while the expansive ones are generalists, mainly feeding on bushes and trees. Fewer expansions are evident among micro- than macrolepidopterans.

scholarly journals Decorative qualities of representatives of Magnoliaceae juss, introduced in the O.V. Fomin botanical garden

2019 ◽  
Vol 77 (1) ◽  
pp. 6-10
Author(s):  
N. Demchenko ◽  
V. Badanina ◽  
O. Futorna ◽  
R. Palagecha ◽  
N. Taran
Keyword(s):  
Botanical Garden ◽  
Early Spring ◽  
Early Summer ◽  
Climatic Conditions ◽  
Ex Situ ◽  
Seasonal Development ◽  
Urban Landscapes ◽  
Physiological Indicators ◽  
Leaf Formation ◽  
Declining Species

The purpose of the work was to find out the features of manifestation of the features of the decorative nature of the species of the Magnoliaceae Juss. on the example of plants from the collection of the O.V. Fomin Botanical Garden of the ESC "Institute of Biology and Medicine" on the climatic conditions of the Kiev metropolis. This article provides detailed study the 12 leaf-declining species of the Magnoliaceae. We studied the complex and seasonal decorativeness, estimated decorativeness, determined the total annual indicator of decorativeness, investigated the seasonal rhythm of plant development on the basis of phenological observations. Basic physiological indicators that were taken into account: budding, opening of flower and vegetative buds, leaf formation, flowering and fruiting. All species that were investigated undergo a full cycle of seasonal development: beautifully bloom, develop and form normally developed fruits and seeds in conditions of ex situ of the Botanical Garden. The species are divided into two groups according to the beginning of the growing season: medium (L. chinense (Hemsl.) Sarg., L. tulipifera L., M. stellata (Siebold & Zucc.) Maxim., M. tripetala L., M. officinalis Rehder & E.H. Wilson, M. denudata Desr., M. liliiflora Desr., M. kobus DC., M. soulangeana Soul.-Bod., M. salicifolia(Sieb. Et Zuss.) Maxim., M. obovata Thunb.) and late (M. biondii Pamp.); into three groups according to the dates of flowering relative to the seasons of the year: early spring (M. stellata, M. denudata, M. salicifolia, M. kobus), late spring and early summer (L. chinense, L. tulipifera, M. tripetala, M. officinalis, M. liliiflora, M. soulangeana, M. obovata), middle summer (M. biondii). The high decorative of studied species (their total annual decorative rate is 4 points) and their high adoptative ability to changes of environmental conditions are concluded. Thus, there is a necessary to extend the using of magnolias in landscaping of urban landscapes as climate forming plants.

scholarly journals A high-altitude peatland record of environmental changes in the NW Argentine Andes (24 ° S) over the last 2100 years

2016 ◽  
Vol 12 (5) ◽  
pp. 1165-1180 ◽  
Author(s):  
Karsten Schittek ◽  
Sebastian T. Kock ◽  
Andreas Lücke ◽  
Jonathan Hense ◽  
Christian Ohlendorf ◽  
...  
Keyword(s):  
High Altitude ◽  
Environmental Changes ◽  
Regional Scale ◽  
Central Andes ◽  
High Accumulation ◽  
Climate Conditions ◽  
Climate Anomalies ◽  
Dry Conditions ◽  
Induced Changes ◽  
The 19Th Century

Abstract. High-altitude cushion peatlands are versatile archives for high-resolution palaeoenvironmental studies, due to their high accumulation rates, range of proxies, and sensitivity to climatic and/or human-induced changes. Especially within the Central Andes, the knowledge about climate conditions during the Holocene is limited. In this study, we present the environmental and climatic history for the last 2100 years of Cerro Tuzgle peatland (CTP), located in the dry Puna of NW Argentina, based on a multi-proxy approach. X-ray fluorescence (XRF), stable isotope and element content analyses (δ13C, δ15N, TN and TOC) were conducted to analyse the inorganic geochemistry throughout the sequence, revealing changes in the peatlands' past redox conditions. Pollen assemblages give an insight into substantial environmental changes on a regional scale. The palaeoclimate varied significantly during the last 2100 years. The results reflect prominent late Holocene climate anomalies and provide evidence that in situ moisture changes were coupled to the migration of the Intertropical Convergence Zone (ITCZ). A period of sustained dry conditions prevailed from around 150 BC to around AD 150. A more humid phase dominated between AD 200 and AD 550. Afterwards, the climate was characterised by changes between drier and wetter conditions, with droughts at around AD 650–800 and AD  1000–1100. Volcanic forcing at the beginning of the 19th century (1815 Tambora eruption) seems to have had an impact on climatic settings in the Central Andes. In the past, the peatland recovered from climatic perturbations. Today, CTP is heavily degraded by human interventions, and the peat deposit is becoming increasingly susceptible to erosion and incision.

scholarly journals Recover and They’ll Come: Flower Visiting Bees Benefit from the Continuous of Micro-Environments Set by Regenerating Forest Fragments

Sociobiology ◽  
2021 ◽  
Vol 68 (1) ◽  
pp. 5861
Author(s):  
Ana Isabel Sobreiro ◽  
Lucas Lopes da Silveira Peres ◽  
Jessica Amaral Henrique ◽  
Rosilda Mara Mussury ◽  
Valter Vieira Alves-Junior
Keyword(s):  
Urban Areas ◽  
Environmental Changes ◽  
Climatic Conditions ◽  
Agricultural Activity ◽  
Forest Fragments ◽  
Forest Types ◽  
Continuous Forest ◽  
Flower Visiting ◽  
Bee Communities ◽  
Forest Habitats

Forest habitats are important sources of food and nesting resources for pollinators, primarily in urban areas and landscapes with intense agricultural activity. The forest fragmentation and environmental changes occurring in these green refuges are known to impose survival challenges to pollinating bees, leading to species loss. However, it is not well known how the species of bees that visit flowers are distributed in forest micro-environments. To fill this gap, we sampled flower visiting bees in a continuous forest matrix with micro-environments of two forest types (mature and regenerating forest). We examined how the local environmental changes and climatic conditions affect the composition and uniformity of bee communities in the different micro-environments. Our results indicated that both abundance and richness were similar between forest types studied here, however climatic conditions and plant flowering patterns affect the composition of bees. Thus, our results demonstrated that the continuous micro-environments can favor floral visits and the reintegration of bee communities, and still, that this strategy can be used to minimize the impacts of environmental changes at local scales.

Paleoenvironmental reconstruction of the central Levantine Corridor during the Pliocene: insights from lacustrine settings 

2021 ◽  
Author(s):  
John Greenlee ◽  
Silas Dean ◽  
Nicolas Waldmann
Keyword(s):  
High Resolution ◽  
Data Science ◽  
Environmental Changes ◽  
Laser Diffraction ◽  
Climatic Conditions ◽  
Paleoenvironmental Reconstruction ◽  
Cosmogenic Isotopes ◽  
X Ray ◽  
Geochemical Proxies ◽  
Favorable Conditions

<p>This study aims to reconstruct the paleoenvironmental and climatic conditions affecting the Levantine corridor during the early Pliocene. For the purpose of this study, a ~20 m continuous core sequence was retrieved out of the ~200 m long, tilted Erk el Ahmar sequence previously dated by cosmogenic isotopes to ~3.5 Ma. The record include intercalating units consisting of sands, silts, and clays that were sampled in high resolution in order to analyze a variety of sedimentological and geochemical proxies of past climate and environmental changes. We present new preliminary, high-resolution sedimentological (laser diffraction granulometry), petrophysical (magnetic susceptibility) and compositional (X-ray fluorescence) data along with accompanying statistical analysis performed with an advanced suite of data-science tools. These results reveal new cycles of environmental change in the area, which appears to be orbitally controlled, and include dramatic changes also indicated by discrete strata of fossil fragments. Moreover, cycles of deposition can also provide hints on the major hydrological controlling mechanisms. This project provides new light into favorable conditions for the subsistence of perennial lake environments in the Levantine Corridor, which in turn may have facilitated faunal migration between Africa and Eurasia.</p>

The level of manifestation and variation of biometric indicators of spring barley samples of collection of Uman national university of horticulture

2021 ◽  
Vol 1 (98) ◽  
pp. 76-84
Author(s):  
Zh. M. Novak ◽  
Keyword(s):  
Plant Height ◽  
Spring Barley ◽  
Geographic Origin ◽  
Weather Conditions ◽  
Early Spring ◽  
Climatic Conditions ◽  
Spike Length ◽  
Coefficients Of Variation ◽  
National University ◽  
Average Plant

Different weather conditions provide unequal growth and development of plants, in addition, biotypes react differently to changes in external environmental factors. Scientists from Ukraine and other countries analyze varieties and samples of spring barley for the purpose of determine donors of useful traits in different soil and climatic conditions. For the purpose of combine a number of useful traits in one genotype, hybridization between geographically distant biotypes is used. Uman National University of Horticulture has a collection of spring barley samples by different geographic origin. The analyze of breeding material by biometric traits, which will allow us to determine the level of manifestation of each of them in different conditions of 2018–2020 and to determine the donors of useful traits for the further breeding process, was carried out. The weather conditions of the years of research were very different. 2018 was the most unfavorable year for early spring crops. The reason for this was the presence of snow cover until the end of March. After that were strong heat and lack of precipitation. 2019 and 2020 were more favorable for spring barley due to the long cool spring. In addition, in 2020, May and June characterized by increased rainfall. The average plant height of the studied biotypes ranged from 50 to 64 cm. Most samples had the lowest plant height 40–57 cm in 2018, and the highest – in 2020 – from 54 to 88 cm. The average spike length of the analyzed samples was 5.9–8.1 cm. There was not dependence between conditions of the research year and spike length. The number of spikelets per spike was naturally determined by the research conditions. The lowest indicators were observed in 2018 — from 7.0 to 12.0 units, while in 2019 — 16.6–23.9 units, and in 2020 — 20.2–27.7 units. The variation of plant height of the analyzed samples was medium and significant with coefficients from 13.7 to 32.6 %. There was a slight, medium and significant variation of the length of the ear (V = 2.9–23.6 %). The index of number of spikelets per spike most varied — the coefficients of variation were 32.6–55.5 %.

Soldaten und Garnisonen. Das Militär und sein ziviles Umfeld

2021 ◽  
pp. 295-329
Author(s):  
Willibald Rosner
Keyword(s):  
19Th Century ◽  
Economic Importance ◽  
Lower Number ◽  
Economic Life ◽  
Citizen Soldiers ◽  
High Incidence ◽  
History Of ◽  
The 19Th Century ◽  
The Military ◽  
Constitutional Monarchy

Soldiers and Garrisons. The Military and its Civilian Environment. This chapter outlines a regional military history of Lower Austria in the 19th century. In the context of history of the k. k. and later k. u. k. Army, peacetime relations between the land and the military are presented in two particular areas. The chapter’s first section focuses on the land’s recruitment and its transformation from a system based on forced conscription by a late-absolutist system to a constitutional monarchy employing citizen soldiers. In a second section, the phenomenon of the garrison illustrates the interdependence of the military and its civilian environment in public, social and economic life. In both sections, the question of the militarization of society is also explored. The surprisingly high incidence of individuals unfit for service and the significantly lower number of actual conscripts demand as much consideration as the economic importance of a garrison for the towns of Lower Austria in last third of the 19th century.

Long-term declines in common breeding seabirds in Japan

2019 ◽  
Vol 30 (3) ◽  
pp. 434-446
Author(s):  
MASAYUKI SENZAKI ◽  
AKIRA TERUI ◽  
NAOKI TOMITA ◽  
FUMIO SATO ◽  
YOSHIHIRO FUKUDA ◽  
...  
Keyword(s):  
State Space Model ◽  
Common Species ◽  
Population Trends ◽  
Seabird Species ◽  
Common Murre ◽  
Cerorhinca Monocerata ◽  
Conservation Actions ◽  
Declining Species ◽  
The Japanese Archipelago

SummaryGlobal seabird populations are in decline, with nearly half of all seabird species currently in an extinction crisis. Understanding long-term seabird population trends is an essential first step to inform conservation actions. In this study, we assembled historical breeding records of seabirds throughout the Japanese archipelago and quantified the long-term population trends of 10 major breeding seabird species using a hierarchical Bayesian state-space model. The model revealed that six species had increasing or no detectable trends (Short-tailed Albatross Phoebastria albatrus, Leach’s Storm Petrel Oceanodroma leucorhoa, Pelagic Cormorant Phalacrocorax pelagicus, Japanese Cormorant Phalacrocorax capillatus, Spectacled Guillemot Cepphus carbo, and Rhinoceros Auklet Cerorhinca monocerata). However, decreasing trends were found not only in nationally threatened species (Common Murre Uria aalge, and Tufted Puffin Fratercula cirrhata) but also common species that are often described as abundant (Black-tailed Gull Larus crassirostris and Slaty-backed Gull Larus schistisagus). These declining species have declined to 3–35% of baseline levels over the past 30 years. This study provides the first evidence of long-term declines in common and widespread seabirds in Japan.

Recent Changes of Nordbogletscher and Nordgletscher, Johan Dahl Land, South Greenland

1986 ◽  
Vol 8 ◽  
pp. 106-110 ◽  
Author(s):  
N.Tvis Knudsen
Keyword(s):  
19Th Century ◽  
Climatic Conditions ◽  
Transport Rate ◽  
Aerial Photographs ◽  
Topographic Maps ◽  
Historical Time ◽  
Surface Movement ◽  
The 19Th Century ◽  
Inland Ice ◽  
Surface Changes

Generally, outlet glaciers from the Inland Ice in South Greenland have retreated and thinned considerably since the 19th century. A sector in Johan Dahl Land, comprising the glaciers Nordbogletscher, Nordgletscher, and Eqalorutsit kangigdlît sermiat, has no trim-line zones. These glaciers have probably reached their most advanced position in historical time and are advancing further. Marginal and surface changes of the glaciers, over the last 30 years, are determined, using topographic maps based on aerial photographs taken in 1953, 1977, and 1981 and compared with ablation and surface movement of ice measured at stakes, established in 1978 at Nordbogletscher. The conclusion, made on the basis of the observations, is that the advance is the result of a higher transport rate of ice from the accumulation area than can ablate during the summers in the ablation area, under prevailing climatic conditions.

The Holocene record of environmental changes in the ‘Stagno di Maccarese’ marsh (Tiber river delta, central Italy)

The Holocene ◽  
2012 ◽  
Vol 22 (12) ◽  
pp. 1461-1471 ◽  
Author(s):  
C Giraudi
Keyword(s):  
Environmental Changes ◽  
Central Italy ◽  
Global Scale ◽  
Beach Ridges ◽  
The Holocene ◽  
Tiber River ◽  
Environmental Variations ◽  
Holocene Record ◽  
The 19Th Century ◽  
Ird Events

The stratigraphic study of the Stagno di Maccarese, carried out on the sediments exposed in about 7 km of trenches excavated in an area of approximately 1.5 km2, has shown that in the course of the Holocene many environmental variations have taken place. The complex evolution of the marsh is demonstrated by the variations in water salinity and the presence of erosion surfaces and soils between the sediments. In the early Holocene, the area studied was an isolated marsh with water having variable salinity, and it was only about 6000 cal. yr BP that it was encompassed in the system of inner delta marshes. In the delta environment, the water of the marsh was oligohaline until about 9th–8th centuries bc, brackish from 9th–8th centuries bc to about 600 yr BP, and later oligohaline until the 19th century drainage. A number of environmental variations are connected with local phenomena, such as erosion of the beach ridges and Tiber floods, but the others can be correlated chronologically with climatic events recorded at regional and global scale. The millennial variations seem to be connected with changes in insolation, while abrupt variations can be correlated chronologically with the IRD events dated at 8200, 5900, 4200, 2800, 1400 and 500 cal. yr BP.

Seasonal Abundance and Population Dynamics of a Bamboo Aphid, Takecallis arundinaria (Homoptera: Aphididae)

1990 ◽  
Vol 25 (4) ◽  
pp. 526-534 ◽  
Author(s):  
Mark A. Coffelt ◽  
Peter B. Schultz
Keyword(s):  
Population Dynamics ◽  
Life Cycle ◽  
Plant Species ◽  
Woody Plant ◽  
Early Spring ◽  
Climatic Conditions ◽  
Seasonal Abundance ◽  
Alternate Host ◽  
Woody Plant Species ◽  
Aphid Populations

The anholocyclic life cycle of the aphid Takecallis arundinaria (Essig) on golden stem bamboo, Phyllostachys aurea (Carrie're) was investigated in 1987 – 1988. Aphid populations peaked from March – May, declined from June – October, and peaked again in December. Aphid population dynamics were strongly influenced by climatic conditions. When aphid populations were at constant or rising levels, significantly more nymphs were found in the southern and eastern quadrants, than in the northern and western quadrants. This directionality may have allowed T. arundinaria populations to be exposed to increased sunlight and decreased winds during the winter and early spring periods. Alate viviparae had a mean fecundity of 147 nymphs and a longevity of 46.5 days. Predators were few and no parasites were found. An alternate host study revealed no aphids on yellow sticky traps placed on nine woody plant species.

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