Pollination outcomes reveal negative density-dependence coupled with interspecific facilitation among plants

Autor(es)

Bergamo, Pedro J. ^{[1, 2]} ; Streher, Nathalia Susin ^[3] ; Traveset, Anna ^[2] ; Wolowski, Marina ^[4] ; Sazima, Marlies ^[5]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Grad Program Ecol, Monteiro Lobato St 255, POB 13083-862, Campinas - Brazil

^[2] CSIC UIB, Mediterranean Inst Adv Studies, Miguel Marques St 21, POB 07190, Esporles, Mallorca - Spain

^[3] Univ Estadual Campinas, Grad Program Plant Biol, Monteiro Lobato St 255, POB 13083-862, Campinas - Brazil

^[4] Univ Fed Alfenas, Inst Nat Sci, Gabriel Monteiro da Silva St 700, POB 37130-000, Alfenas - Brazil

^[5] Univ Estadual Campinas, Inst Biol, Dept Plant Biol, Monteiro Lobato St 255, POB 13083-862, Campinas - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ECOLOGY LETTERS; v. 23, n. 1, p. 129-139, JAN 2020.
• Citações Web of Science: 10

Resumo

Pollination is thought to be under positive density-dependence, destabilising plant coexistence by conferring fitness disadvantages to rare species. Such disadvantage is exacerbated by interspecific competition but can be mitigated by facilitation and intraspecific competition. However, pollinator scarcity should enhance intraspecific plant competition and impose disadvantage on common over rare species (negative density-dependence, NDD). We assessed pollination proxies (visitation rate, pollen receipt, pollen tubes) in a generalised plant community and related them to conspecific and heterospecific density, expecting NDD and interspecific facilitation due to the natural pollinator scarcity. Contrary to usual expectations, all proxies indicated strong intraspecific competition for common plants. Moreover interspecific facilitation prevailed and was stronger for rare than for common plants. Both NDD and interspecific facilitation were modulated by specialisation, floral display and pollinator group. The combination of intraspecific competition and interspecific facilitation fosters plant coexistence, suggesting that pollination can be a niche axis maintaining plant diversity. (AU)

• Processo FAPESP: 16/06434-0 - Interações planta-polinizador em comunidades e a estruturação de atributos funcionais e do sucesso reprodutivo
• Beneficiário: Pedro Joaquim Bergamo
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 18/02996-0 - Moduladores ecológicos e evolutivos da limitação polínica em uma rede trófica da uma ilha do Mediterrâneo
• Beneficiário: Pedro Joaquim Bergamo
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado