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001-es BibID:	BIBFORM128025
035-os BibID:	(Scopus)85205537024 (WoS)001327427600001
Első szerző:	Jiménez-Martín, Iciar
Cím:	High levels of seed dispersal by a declining wintering population of migratory geese / Iciar Jiménez-Martín, Adrián Monreal, Víctor Martín-Vélez, María J. Navarro-Ramos, Anthony D. Fox, Ádám Lovas-Kiss, Andy J. Green
Dátum:	2024
ISSN:	0046-5070 1365-2427
Megjegyzések:	Ducks are known to be important seed dispersers, but the role of geese in plant dispersal is less clear. Wintering populations of migratory geese are undergoing rapid changes in distribution and habitat use in response to climate change and changes in land use, and the implications for seed dispersal have not previously been studied. At the southern end of Eurasian goose flyways, numbers are declining through short-stopping. The Do♯nana wetlands, or ♭marismas del Guadalquivir', in south-west Spain were formerly Europe's most important wintering grounds for the greylag goose Anser anser. There, we collected 151 faecal samples to compare seed dispersal by endozoochory in early and late winter in natural marshes and ricefields. We also tested seed germinability and simulated potential seed dispersal distances to assess the importance of this decreasing wintering population for dispersal of dry-fruited plants previously assumed to rely on abiotic seed dispersal over short distances. We retrieved 1196 intact seeds belonging to 24 different taxa, including eight species not previously reported from waterfowl (Anatidae) vectors. Seeds were present in 47% of samples, with a peak of 90% in natural marshes in November, compared to only 27% in ricefields at the same time, or in the same marsh site in February. Seed abundance and richness per sample were significantly higher in early than late winter, and in natural compared to in artificial wetlands. Major differences in plant species composition between sampling sites were partly related to habitat differences and moisture requirements of individual species. Germinability in aquatic plants was higher when gut passage was followed by cold storage for 2 months prior to germination tests. We simulated seed dispersal events to and from our sampling sites using GPS tracking of three geese. This suggested that seeds can be dispersed up to 25 km during daily movements, with a median of 0.2?5 km, depending on the sampling site. The most frequent dispersal syndrome assigned to the plant species dispersed by geese was barochory (gravity), and geese disperse plants much farther than the mechanisms predicted by their syndromes. Geese likely have an important role in the dispersal and connectivity of plant populations within and beyond Mediterranean wetlands, providing an ecosystem service which is threatened by changes in migratory behaviour. Our results highlight the importance of studying seed dispersal interactions involving migratory waterbirds in the current context of species loss and distribution shifts, as many crucial interactions may be disappearing even before they are discovered.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Anser anser endozoochory GPS tracking long-distance dispersal marshlands ricefields
Megjelenés:	Freshwater Biology. - 69 : 12 (2024), p. 1857-1870. -
További szerzők:	Monreal Adrián Martín-Vélez, Víctor Navarro-Ramos, María J. Fox, Anthony D. Lovas-Kiss Ádám (1991-) (biológus, botanikus) Green, Andy J.
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM116050
035-os BibID:	(Scopus)85163074287 (WOS)001007681100001
Első szerző:	Lovas-Kiss Ádám (biológus, botanikus)
Cím:	Migratory geese allow plants to disperse to cooler latitudes across the ocean / Ádám Lovas-Kiss, Víctor Martín-Vélez, Kane Brides, David M. Wilkinson, Larry R. Griffin, Andy J. Green
Dátum:	2023
ISSN:	0305-0270
Megjegyzések:	Aim: How plants can disperse in response to global change is a critical question, yet major knowledge gaps persist about long-distance dispersal (LDD) mechanisms. We studied the potential a migratory waterfowl has for LDD of flowering plants via gut passage of seeds (endozoochory), comparing spring and autumn migration. Location: United Kingdom and Iceland. Taxon: Pink-footed Goose (Anser brachyrhynchus, Baillon) and Angiosperma. Methods: We studied endozoochory by Pink-footed geese migrating within and between the UK and Iceland by faecal sampling and GPS tracking. We collected 614 faecal samples from 14 areas in the UK and one in Iceland. Using GPS tracks to and from these areas, we estimated how far seeds can be dispersed by Pink-footed geese, and where to or from. Results: We recorded 5507 intact seeds of 35 species (27 terrestrial) from 15 plant families, with lower seed abundance per dropping when birds were migrating northwards in the UK during spring than upon their arrival in autumn. Species richness of plant seeds was highest in Iceland and in autumn. Only four plant species dispersed had an "endozoochory syndrome". GPS movements showed that seeds retained in guts for up to 24 h can be readily dispersed in both directions between the UK and Iceland, with maximum distances exceeding 2000 km, as well as between UK localities separated by 100 s of km. Movements northwards of ?400 km were even recorded in autumn. While at stopover sites, daily movements between roost and feeding sites often exceed 20 km. Main Conclusions: Pink-footed geese are LDD vectors for plants previously assumed to lack an LDD mechanism. Spring migration is not the only period when geese move plants to cooler latitudes. The pink-footed goose can allow terrestrial and aquatic plants to cross the ocean and to keep pace with climate change.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk endozoochory island biogeography long-distance dispersal migration pink-footed goose seed dispersal waterfowl
Megjelenés:	Journal Of Biogeography. - 50 : 9 (2023), p. 1602-1614. -
További szerzők:	Martín-Vélez, Víctor Brides, Kane Wilkinson, David Mark Griffin, Larry R. Green, Andy J.
Pályázati támogatás:	ÚNKP-21-5-DE-457 Egyéb NKFIH FK-138698 Egyéb
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001-es BibID:	BIBFORM115058
035-os BibID:	(WoS)001082076900001 (Scopus)85172199441
Első szerző:	Navarro-Ramos, María J.
Cím:	Seed dispersal between aquatic and agricultural habitats by greylag geese / Navarro-Ramos, María J.; van Leeuwen, Casper H.A.; Olsson, Camilla; Elmberg, Johan; Månsson, Johan; Martín-Vélez, Víctor; Lovas-Kiss, Ádám; Green, Andy J.
Dátum:	2024
ISSN:	0167-8809
Megjegyzések:	Waterbirds disperse plant seeds within and between aquatic and terrestrial ecosystems in their faeces. However, seed dispersal distances, connectivity among habitat types, and implications for dispersal of weeds remain unquantified in agricultural landscapes. Therefore, we GPS-tagged 31 greylag geese Anser anser and collected 300 faecal samples from feeding flocks in seven agricultural habitats (four cereals, hayfields, pasture, and strawberries) across two landscapes in southern Sweden. We identified intact seeds, determined key plant traits, and tested three hypotheses: (1) geese ingest, transport, and egest seeds from a wide range of terrestrial and aquatic plants, including weeds and alien species; (2) the community and trait composition of plant seeds in faeces vary between habitat types; and (3) seed dispersal by geese is a directional dispersal mechanism that connects some habitat types more than others. We recovered 131 seeds from 41 plant species (19 families), including nine agricultural weeds and one alien species. Many seeds were from aquatic plants (45%), dispersed into terrestrial habitats. A connectivity network formed between habitat types (as nodes) and direct flights (as links) revealed that all agricultural habitats were directly connected with each other, although 66% of flights were between aquatic and agricultural habitats. Geese spent most time at lakes (34%), pastures (14%), barley (10%) and wheat (8%) fields, which were also the most interconnected habitats, with high seed species richness and seed abundance in faecal samples. Combining waterfowl movement data with faecal analysis provided support for all three hypotheses. Geese may contribute to previously overlooked agricultural conflicts through weed dispersal. Proximity to aquatic habitats suitable for roosting may increases the use of agricultural habitats, and potentially the seed dispersal into them.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Agriculture Ecosystems & Environment. - 359 (2024), p. 1-11. -
További szerzők:	Van Leeuwen, Casper H. A. Olsson, Camilla Elmberg, Johan Månsson, Johan Martín-Vélez, Víctor Lovas-Kiss Ádám (1991-) (biológus, botanikus) Green, Andy J.
Pályázati támogatás:	ÚNKP-21-5-DE-457 Egyéb NKFIH FK-138698 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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