Sökning: onr:"swepub:oai:DiVA.org:umu-40354" >
Simulated nitrogen ...
Simulated nitrogen deposition influences gastropod grazing in lichens
-
Asplund, Johan (författare)
-
- Johansson, Otilia (författare)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap
-
Nybakken, Line (författare)
-
visa fler...
-
- Palmqvist, Kristin (författare)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap
-
Gauslaa, Yngvar (författare)
-
visa färre...
-
(creator_code:org_t)
- 2015-12-03
- 2010
- Engelska.
-
Ingår i: Ecoscience. - : Informa UK Limited. - 1195-6860. ; 17:1, s. 83-89
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.2...
-
visa färre...
Abstract
Ämnesord
Stäng
- Lichens are often important photosynthetic organisms in oligotrophic environments where high-quality fodder plants are rare. A strong herbivore defence and/or low nutritional quality allows the accumulation of a high lichen biomass in such areas. However, it is not known how N deposition influences lichen palatability. This study analyzes possible changes in gastropod grazing preference after 3 months simulated N deposition on 3 foliose (Lobaria scrobiculata, Platismatia glauca, and Xanthoria aureola) and 1 pendulous lichen species (Alectoria sarmentosa). Lichens were daily irrigated in the field with rainwater containing 1.625 mM NH4NO3 from June to September, equivalent to a deposition of 50 kg N·ha-1·y-1. Irrigations applied at night, morning, or noon simulated different C-gain regimes. Afterwards in the lab, we offered 2 common lichen-feeding gastropods the choice between N-fertilized thalli and control thalli irrigated with artificial rainwater. The gastropods clearly preferred the unfertilized thalli of the 3 foliose species. For the pendulous A. sarmentosa, the gastropods preferred N-enriched thalli (irrigated at night) to controls. In conclusion, N-enrichment changes the palatability of lichens in species-specific ways.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- Alectoria sarmentosa
- herbivory
- Lobaria scrobiculata
- mollusc
- Platismatia glauca
- Xanthoria aureola
- Alectoria sarmentosa
- herbivorie
- Lobaria scrobiculata
- mollusque
- Platismatia glauca
- Xanthoria aureola
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas