Search results for " succession"
showing 10 items of 346 documents
Global warming affect Collembola community: A long-term study
2006
Summary Long-term (1992–2002) effects of climate changes on soil Collembola in Scots pine Pinus sylvestris forests in North Vidzeme Biosphere Reserve (northern Latvia) are investigated. The study was carried out in three forest stands of different age, young (30–40 years), middle aged (50–70 years), and old (150–200 years). One hundred soil samples were collected within each sampling site once a year in autumn over a period of 11 years. In total, 66 species of Collembola were found. Species richness varied between 47 and 56 and density of Collembola from 7300 to 8300 ind m−2. A statistically significant increase in the sums of positive air temperatures (⩾4 °C) was recorded during the period…
Saistība starp briofītu funkcionālajām grupām, substrātu īpašībām un mežau augu sabiedrībām Moricsalas dabas rezervātā
2013
Anotācija Darba mērķis ir noskaidrot substrāta parametru ietekmi uz briofītu sugu bagātību, sugu sastopamību un sugu sadalījumu pa funkcionālajām grupām (dzīves formu un dzīves stratēģiju) dažādās meža augu sabiedrībās, kā arī izpētīt sūnu sugu sastāva mainību Moricsalā pēdējo 100 gadu laikā. Par pētāmo teritoriju izvēlēts Moricsalas dabas rezervātā, kas ir senākā aizsargājamā dabas teritorija Latvijā un ilgstoši neskartās dabas dēļ īpaši piemērota sūnu ekoloģijas izpētei. Pašlaik bagātīgu sūnu sugu sastopamību uz pētītajiem substrātiem nodrošina koku sugas ar atšķirīgu mizas reakciju, dažāda garuma un apkārtmēra kritalas, heterogēns koku sugu sastāvs. Pēdējo 100 gadu laikā Moricsalas meža …
Temporal species turnover and plant community changes across different habitats in the Lake Engure Nature Park, Latvia
2014
Veģetācijas dinamikas izpētē reti ir gadījumi, kad monitoringu vienlaicīgi veic vairākās atšķirīgās ekosistēmās. Tomēr šāda veida pētījumi ļauj padziļināti izprast veģetācijas struktūras un pazīmju izmaiņu mehānismus. Šajā pētījumā aplūkotas lakstaugu stāva izmaiņas, sugu aprite un sugu skaita-laika attiecība dažādu biotopu griezumā 12 gadu periodā ILTER monitoringa stacijā Engures ezera dabas parkā. Sugu aprite laikā definēta kā atšķirība sugu sastāvā starp diviem laika periodiem. Sugu skaita-laika attiecība tika novērtēta, izmantojot slīdošo logu pieeju. Detrendētā korespondentanalīze izmantota, lai noskaidrotu ikgadējās izmaiņas sugu sastāvā. Sugu skaits un kumulatīvais skaits, kā arī da…
La "successione digitale"
2018
The article tackles the issue of digital contents’ regulation after the death of their owner, starting from the scope and content of «digital succession». It continues with the task of determining the regulatory framework concerning the devolution of both economic assets and personal or family memories stored on the Internet, under Italian Law of Succession and EU Regulation n. 650/2012 on European Certificate of Succession. Once considered the US «Revised Uniform Fiduciary Access to Digital Assets Act», the contribution also debates the development of new digital instruments and records, other than will and testament, formed by using online tools (such as Facebook «Legacy Contact»). In the…
Annullamento del testamento per dolo e incapacità naturale: uno sguardo comparatistico
2018
Il contributo analizza le questioni connesse all’annullamento del testamento per dolo e incapacità naturale. Risultando piuttosto restrittivo l’attuale orientamento in tema di prova della mancanza di capacità testamentaria e della captazione, è necessario proporre delle soluzioni alternative, anche mediante il confronto con l’Inghilterra e gli Stati Uniti. Quanto all’art. 591, comma 2°, n. 3, cod. civ., si potrebbe attribuire rilievo non solo all’incapacità totale, bensì anche a quella parziale (come avviene per gli atti inter vivos). Quanto, invece, all’art. 624 cod. civ., si deve prendere in considerazione, ai fini dell’annullamento, dolo e captazione “attenuati”, nel caso in cui, se valu…
La persistance du droit successoral de l'Ancien Régime dans l'Europe du XIXe siècle
2001
International audience
Long-term changes in collembolan communities in grazed and non-grazed abandoned arable fields in Denmark
2004
Summary In order to explore long-term changes in microarthropod communities after introduction of livestock grazing in abandoned fields with herb–grass vegetation at Mols, E. Jutland, Denmark, soil and litter samples were collected from 7 pairs (blocks) of grazed and non-grazed plots over a period of 14 years. Sampling began just before fencing and initiation of cattle and sheep grazing in the spring of 1985. The total material included 76 collembolan species; 65 and 68 species were recorded in the grazed and non-grazed plots, respectively. The number of species recorded at individual sampling dates fluctuated considerably through the period. In the vegetation/litter layer the mean number o…
Ecological genetics of a cyclical parthenogen in temporary habitats
1995
Populations of the rotifer Brachionus plicatilis inhabiting three temporary ponds in Torreblanca Marsh (Castellon, Spain) were regularly screened for allozyme variation, sexual reproduction levels and population densities during an annual cycle. Relevant ecological parameters in the ponds were also recorded. The electrophoretic survey of the three ponds (Poza Sur, Poza Norte and Canal Central) revealed a high level of overall genetic polymorphism in four marker loci, but only 13 multilocus genotypes were found. We classified clones into three clonal groups (SS, SM, L) characterized by unique arrays of alleles in the four marker loci, and significant differences in body shape and size. Clona…
Tissue-Specific Dynamics in the Endophytic Bacterial Communities in Arctic Pioneer Plant
2020
The rapid developments in the next-generation sequencing methods in the recent years have provided a wealth of information on the community structures and functions of endophytic bacteria. However, the assembly processes of these communities in different plant tissues are still currently poorly understood, especially in wild plants in natural settings. The aim of this study was to compare the composition of endophytic bacterial communities in leaves and roots of arcto-alpine pioneer plant Oxyria digyna, and investigate, how plant tissue (leaf or root) or plant origin affect the community assembly. To address this, we planted micropropagated O. digyna plants with low bacterial load (bait pla…
Conflicts and Negotiations in the Intergenerational Succession of Family Firms: A Literature Review.
2019
This chapter intends to stimulate a serious debate on the topic of conflict in family businesses and the theory of negotiation as a tool to resolve these conflicts. The methodology is based on the survey of the main literature on these topics. Despite the literature on conflict management is highly developed as well as the literature in family business, scholars and researchers have not yet deepened several areas of conflict management in family businesses, so the two fields of literature are yet not well integrated, showing a potential for future research avenues. We then propose a research agenda identifying the issues and research gaps that should be explored by researchers to reach a de…