The importance of generalist pollinator complexes for endangered island endemic plants

Detalhes bibliográficos
Autor(a) principal: Weissmann, Julie A.
Data de Publicação: 2018
Outros Autores: Schaefer, Hanno
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.3/4861
Resumo: To investigate whether endangered endemic plants of the Azores are threatened by pollinator limitation, we studied the insect pollinator communities of Azorina vidalii, Euphrasia azorica, Myosotis azorica and Solidago azorica on Corvo Island. We found no evidence for dependence on a specialised pollinator. Instead, we found five to 21 mostly generalist insect pollinators per plant species, six of them probably introduced species. Diptera, with at least 12 species, and Hymenoptera, with at least nine species, are the most important insect orders and also most important in visitation frequency. The relatively high pollinator diversity for each of the studied plants and the high proportion of generalists indicate that the pollination networks of the four study plant species are rather resilient, i.e. the loss of a species would not constitute an immediate threat. Seed counts and numbers of juvenile plants indicate that reproductive success of all four species is stable. Altogether, our results suggest that there is no pollinator limitation in the four study species. Conservation measures should therefore focus on other threats, on Corvo mainly on grazing pressure.
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spelling The importance of generalist pollinator complexes for endangered island endemic plantsEndemic PlantsGeneralist PollinatorsTo investigate whether endangered endemic plants of the Azores are threatened by pollinator limitation, we studied the insect pollinator communities of Azorina vidalii, Euphrasia azorica, Myosotis azorica and Solidago azorica on Corvo Island. We found no evidence for dependence on a specialised pollinator. Instead, we found five to 21 mostly generalist insect pollinators per plant species, six of them probably introduced species. Diptera, with at least 12 species, and Hymenoptera, with at least nine species, are the most important insect orders and also most important in visitation frequency. The relatively high pollinator diversity for each of the studied plants and the high proportion of generalists indicate that the pollination networks of the four study plant species are rather resilient, i.e. the loss of a species would not constitute an immediate threat. Seed counts and numbers of juvenile plants indicate that reproductive success of all four species is stable. Altogether, our results suggest that there is no pollinator limitation in the four study species. Conservation measures should therefore focus on other threats, on Corvo mainly on grazing pressure.Universidade dos AçoresRepositório da Universidade dos AçoresWeissmann, Julie A.Schaefer, Hanno2018-11-13T17:47:04Z20182018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.3/4861engWeissmann, J.A. & H. Schaefer (2018). The importance of generalist pollinator complexes for endangered island endemic plants. “Arquipelago. Life and Marine Sciences”, 35: 23-40.0873-4704info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-12-20T14:33:06Zoai:repositorio.uac.pt:10400.3/4861Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:27:11.692306Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv The importance of generalist pollinator complexes for endangered island endemic plants
title The importance of generalist pollinator complexes for endangered island endemic plants
spellingShingle The importance of generalist pollinator complexes for endangered island endemic plants
Weissmann, Julie A.
Endemic Plants
Generalist Pollinators
title_short The importance of generalist pollinator complexes for endangered island endemic plants
title_full The importance of generalist pollinator complexes for endangered island endemic plants
title_fullStr The importance of generalist pollinator complexes for endangered island endemic plants
title_full_unstemmed The importance of generalist pollinator complexes for endangered island endemic plants
title_sort The importance of generalist pollinator complexes for endangered island endemic plants
author Weissmann, Julie A.
author_facet Weissmann, Julie A.
Schaefer, Hanno
author_role author
author2 Schaefer, Hanno
author2_role author
dc.contributor.none.fl_str_mv Repositório da Universidade dos Açores
dc.contributor.author.fl_str_mv Weissmann, Julie A.
Schaefer, Hanno
dc.subject.por.fl_str_mv Endemic Plants
Generalist Pollinators
topic Endemic Plants
Generalist Pollinators
description To investigate whether endangered endemic plants of the Azores are threatened by pollinator limitation, we studied the insect pollinator communities of Azorina vidalii, Euphrasia azorica, Myosotis azorica and Solidago azorica on Corvo Island. We found no evidence for dependence on a specialised pollinator. Instead, we found five to 21 mostly generalist insect pollinators per plant species, six of them probably introduced species. Diptera, with at least 12 species, and Hymenoptera, with at least nine species, are the most important insect orders and also most important in visitation frequency. The relatively high pollinator diversity for each of the studied plants and the high proportion of generalists indicate that the pollination networks of the four study plant species are rather resilient, i.e. the loss of a species would not constitute an immediate threat. Seed counts and numbers of juvenile plants indicate that reproductive success of all four species is stable. Altogether, our results suggest that there is no pollinator limitation in the four study species. Conservation measures should therefore focus on other threats, on Corvo mainly on grazing pressure.
publishDate 2018
dc.date.none.fl_str_mv 2018-11-13T17:47:04Z
2018
2018-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.3/4861
url http://hdl.handle.net/10400.3/4861
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Weissmann, J.A. & H. Schaefer (2018). The importance of generalist pollinator complexes for endangered island endemic plants. “Arquipelago. Life and Marine Sciences”, 35: 23-40.
0873-4704
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Universidade dos Açores
publisher.none.fl_str_mv Universidade dos Açores
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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