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001-es BibID:	BIBFORM117115
035-os BibID:	(Scopus)85101687611 (cikkazonosító)619812
Első szerző:	Deák Balázs (biológus)
Cím:	Ancient Burial Mounds Provide Safe Havens for Grassland Specialist Plants in Transformed Landscapes- A Trait-Based Analysis / Balázs Deák, Zoltán Rádai, Zoltán Bátori, András Kelemen, Katalin Lukács, Réka Kiss, István Elek Maák, Orsolya Valkó
Dátum:	2021
ISSN:	2296-701X
Megjegyzések:	Due to the intensified land use in transformed landscapes, grassland biodiversity is often restricted to habitat fragments inadequate for arable use or for urban development. In continental parts of Eurasia, the ?600,000 ancient burial mounds (called ?kurgans") built by nomadic tribes of the steppes are amongst the most widespread landmarks providing refuge for dry grassland species. In our study by using plant functional groups and functional traits, we aimed at gaining insight into the ecological and evolutionary processes shaping the structure and the composition of assemblages of grassland specialist plant species on kurgans embedded in the agricultural landscapes of East-Hungary. As a comparison, we also studied roadside verges and pristine extensive grasslands in the same region. We found that despite their small size, due to the lack of human disturbances and high microhabitat diversity kurgans can maintain a high species richness and percentage cover of specialists, especially when compared to verges. We revealed that assemblages of specialist plants on kurgans are characterized by traits typical to terrestrial habitat islands such as self-compatibility, large seed mass and tall stature. Kurgans and extensive grasslands were characterized by higher functional diversity (both at the level of single traits and multi-trait based functional dispersion) which is probably due to the higher level of environmental heterogeneity compared to the homogeneous environment in verges.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk habitat island refuge site verge functional traits phylogenetics conservation environmental heterogeneity steppe
Megjelenés:	Frontiers in Ecology and Evolution. - 9 (2021), p.1-13. -
További szerzők:	Rádai Zoltán (1991-) (biológus) Bátori Zoltán Kelemen András (1986-) (biológus-ökológus) Lukács Katalin (1993-) (biológus) Kiss Réka (1990-) (biológus, ökológus) Maák István Elek Valkó Orsolya (1985-) (biológus)
Pályázati támogatás:	KH 130338 Egyéb FK 135329 Egyéb FK 124404 Egyéb KH 126476 Egyéb K 124796 Egyéb NTP-NFTÖ-20-B-0093 Egyéb KKP 133839 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM107988
035-os BibID:	(cikkazonosító)826968 (WOS)000827724600001 (Scopus)85134270245
Első szerző:	Tóth Zsófia (biológus)
Cím:	Food Restriction Reveals Individual Differences in Insulin-Like Growth Factor-1 Reaction Norms / Zsófia Tóth, Katharina Mahr, Gyula Ölveczki, Levente Őri, Ádám Zoltán Lendvai
Dátum:	2022
ISSN:	2296-701X
Megjegyzések:	Most organisms have to cope with unpredictable environmental challenges such as fluctuations in nutritional resources. Insulin-like growth factor-1 (IGF-1) is an evolutionarily conserved hormone that is highly sensitive to the individual nutritional status and regulates major life-history traits including lifespan and reproduction across vertebrates. We investigated the role of IGF-1 during periods of food shortages by altering between two feeding regimes (110 and 70% of daily food intake) after a period of ad libitum feeding in captive bearded reedlings (Panurus biarmicus). Each dietary treatment was repeated twice. Birds lost mass under food restriction, but the magnitude of mass change depended on the preceding dietary conditions. Moreover, bearded reedlings showed large, repeatable individual differences in their IGF-1 reaction norms with some individuals increasing IGF-1 levels in response to a restricted diet, whereas others showed no responses or decreased IGF-1 levels. This variation was explained by differences in average body mass: heavier individuals had higher IGF-1 levels during the control treatment and were more likely to decrease IGF-1 levels in response to the dietary restriction than did lighter ones. This result uncovers an individual by environment interaction (I x E) and may have important implications for the evolution of IGF-1 related hormonal phenotypes in this species.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Frontiers in Ecology and Evolution. - 10 (2022), p. 1-12. -
További szerzők:	Mahr, Katharina Ölveczki Gyula Őri Levente Lendvai Ádám Zoltán (1977-) (biológus)
Pályázati támogatás:	OTKA-139021 OTKA K113108 OTKA 2019-2.1.11-TÉT-2019-0004 egyéb EFOP-3.6.1-16-2016-00022 EFOP
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