Search results for "Habit"
showing 10 items of 1816 documents
Impact of landscape on spatial genetic structure and diversity ofCoenagrion mercuriale(Zygoptera:Coenagrionidae) in northern France
2015
AbstractLoss and fragmentation of habitat is a current main cause of biodiversity loss in freshwater habitats. Odonates (dragonflies and damselflies) depend on these habitats to complete their development. Fragmentation may be a particular threat for odonates because it generates a network of small habitat patches within which populations could suffer from isolation and loss of genetic diversity. The southern damselfly Coenagrion mercuriale is categorized on the IUCN red list as Near Threatened, largely because of population fragmentation and demographic declines associated with changes in land use. Small populations at the margin of this species’ range are of particular concern because the…
Up-to-date report on the distribution ofHelianthemum lippii(Cistaceae) in Italy
2015
An up-to-date report on the distribution of Helianthemum lippii in Italy is provided also on the basis of the findings by Lojacono-Pojero in 1889 who reported the existence of a relic population in Sicily (southern Italy), which is now thought to be extinct because of human disturbance. Field excursions permitted to confirm the locus classicus reported by Lojacono-Pojero as the other Sicilian localities that have been reported more recently. Based on a careful analysis of the literature the presence of H. lippii is currently excluded in Calabria and Apulia. The main causes that threaten the habitat of H. lippii in Sicily are pointed out according to IUCN Threats Classification Scheme.
Dynamic Animal Populations in Managed Forests: Species Ecological Requirements and Sustainable Harvesting
2015
Forest management has altered forested environments and provoked stress to many natural habitats and biodiversity. The goal of biodiversity management is the long-term persistence of populations in human-modified environments. We demonstrate a spatio-temporal modeling approach to address the relationship between various management objectives and population persistence in the long-term in a commercial forest landscape. We used the flying squirrel (Pteromys volans), the three-toed woodpecker (Picoides tridactylus) and the long-tailed tit (Aegithalos caudatus) as example species. They are all forest species but they have distinctly different habitat requirements. In the model, forest growth, f…
Patch size and connectivity influence the population turnover of the threatened chequered blue butterfly, Scolitantides orion (Lepidoptera: Lycaenida…
2008
Chequered blue butterfly, Scolitantides orion (Lepidoptera: Lycaenidae) has severely declined in many parts of Europe and is currently red-listed in many countries. We studied the population structure and turnover of the species in a lake-island system in a National Park in eastern Finland over a three-year period. The incidence of the chequered blue on the suitable islands (n = 41) and habitat patches (n = 123) was high: an average of 82% of the islands and patches were occupied over the three year period. At the island scale, the annual population turnover rate was 17%, with an extinction and colonization rate of 7% and 10%, respectively. At the patch scale, the annual population turnover…
Potametum alpini Podbielkowski 1967 w starorzeczach południowo-zachodniej Polski
2018
The paper presents the distribution and habitat conditions of Potametum alpini communities (class Potametea) in oxbow lakes of south-western Poland. A study done in 2000–2015 identified 11 localities of this community in oxbow lakes. The threats to Potametum alpini in south-western Poland include changes in the levels and physicochemistry of the water.
Comparison of the fish assemblages associated with Posidonia oceanica after the partial loss and consequent fragmentation of the meadow
2005
An extensive Posidonia oceanica meadow was partially destroyed by excavation, resulting in areas of seagrass habitat of equal complexity (shoot density) but different heterogeneity (degree of fragmentation). The fish assemblages associated with differently fragmented beds were compared from a landscape perspective. Differences in the fish assemblages were detected, with several species showing different patterns: (1) species that increased their abundance along with the degree of bed fragmentation, (2) species that were more abundant in fragmented beds, but did not show differences between more or less fragmented beds, and (3) species that were mostly abundant in large seagrass patches or i…
Sakodiena un oromiofunkcionālo traucējumu saistība pirmsskolas vecuma bērniem Latvijā
2019
Priekšvēsture: Orofaciālā mioloģija ir zinātne par sejas un orofaciālā kompleksa muskuļu normālu un patoloģisku darbību un to saistību ar sakodienu un runu. “Orofaciālā kompleksa miofunkcionālie traucējumi” (OMT) ietekmē mutes dobuma stāvokli un to saistību ar dažādiem fizioloģiskiem un psiholoģiskiem faktoriem. Infantila rīšana, mutes elpošana, pirkstu vai knupja ilgstoša sūkāšana, nagu graušana un zobu griešana ir daži no galvenajiem pētītajiem sliktajiem ieradumiem (Hanson & Mason, 2003). Ir izpētīts, ka tādi ieradumi kā ilgstošas elpceļu saslimšanas, infantila rīšana, mēles parafunkcija ir saistīti ar orofaciālā kompleksa disfunkcijām (Bahreman, 2013). Mērķis: Pētījums par okluzālo atra…
Prestació econòmica per a cures en l'entorn familiar
2020
Este document explica la prestació econòmica per a cures en l'entorn familiar que inclou el sistema de Dependència describint els requisits de la persona dependent i de les persones que poden ser cuidadores. Es destaca la importancia de les condicions d'habitabilitat per a que es puga concedir esta prestació. This document explains the financial benefit for care in the family environment that includes the Dependency system describing the requirements of the dependent person and the people who can be carers. The importance of the living conditions for this benefit to be granted is emphasized.
Interspecific attraction between ground-nesting songbirds and ants: the role of nest-site selection
2021
Abstract Background Interspecific interactions within ecological networks can influence animal fitness and behaviour, including nest-site selection of birds and ants. Previous studies revealed that nesting birds and ants may benefit from cohabitation, with interspecific attraction through their nest-site choice, but mutual interactions have not yet been tested. We explored a previously undescribed ecological link between ground-nesting birds and ants raising their own broods (larvae and pupae) within the birds’ nests in a temperate primeval forest of lowland Europe. We tested whether the occurrence of ant broods within bird nests resulted from a mutual or one-sided interspecific attraction …
Excess of de novo variants in genes involved in chromatin remodelling in patients with marfanoid habitus and intellectual disability.
2020
PurposeMarfanoid habitus (MH) combined with intellectual disability (ID) (MHID) is a clinically and genetically heterogeneous presentation. The combination of array CGH and targeted sequencing of genes responsible for Marfan or Lujan–Fryns syndrome explain no more than 20% of subjects.MethodsTo further decipher the genetic basis of MHID, we performed exome sequencing on a combination of trio-based (33 subjects) or single probands (31 subjects), of which 61 were sporadic.ResultsWe identified eight genes with de novo variants (DNVs) in at least two unrelated individuals (ARID1B, ATP1A1, DLG4, EHMT1, NFIX, NSD1, NUP205 and ZEB2). Using simulation models, we showed that five genes (DLG4, NFIX, …