Publicação
Zooplankton communities of the North-Eastern Atlantic: Portuguese offshore waters
| Resumo: | Zooplankton plays a key role in ecosystem functioning, as they represent the interface for energy transfer between primary producers and planktivores. Data on zooplankton, although essential to correctly assess the state of marine ecosystems, is still lacking for several regions were the need for answers is crucial. This work aims at establishing a baseline of knowledge on the zooplankton communities in the study area and finding relationships between copepod distribution (beta-diversity) and environmental and spatial factors. The study area was located off the coast of Portugal, limited between 42º and 35ºN and 14º and 9,5ºW. Sampling was conducted on 22 sites using a Bongo net towed from the rear of the ship in a double oblique design until a maximum depth of 215m, and at each site two samples were collected, one for biomass quantification and the other for taxonomical identification. Results showed that spatial effects were the primary drivers of variation on zooplankton biomass, MTG assemblages’ composition and copepod beta-diversity, along with spatially structured environmental variation, which also had an important role. Zooplankton biomass showed the greatest dependence on spatial effects (along with spatially structured environmental variation), showing that biomass alone might not be so susceptible to occasional changes in the environmental variables. MTG assemblages’ composition and copepod beta-diversity showed more complex patterns of variation, but the predominance of spatial effects is a result that, although contrary to the general trend, is in accordance with the hypothesis that inter-regional variability is more complex than a correlation with Sea Surface Temperature. The establishment of a baseline of data for our study area on the studied parameters, especially copepods, is probably the most important conclusion. Calanoid copepods were, as expected, dominant throughout the study area, represented by the genus Calanus, and more specifically, Calanus helgolandicus (Claus, 1863). |
|---|---|
| Autores principais: | Ferreira, Bruno Alexandre da Silva Panta |
| Assunto: | Ciências Naturais::Ciências Biológicas |
| Ano: | 2014 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867439013517852672 |
|---|---|
| author | Ferreira, Bruno Alexandre da Silva Panta |
| author_facet | Ferreira, Bruno Alexandre da Silva Panta |
| author_role | author |
| contributor_name_str_mv | Gomes, P. A. RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Ferreira, Bruno Alexandre da Silva Panta\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Gomes, P. A. RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Ferreira, Bruno Alexandre da Silva Panta |
| datacite.date.Accepted.fl_str_mv | 2014-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2015-04-07T14:35:09Z |
| datacite.date.embargoed.fl_str_mv | 2015-04-07T14:35:09Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Ciências Naturais::Ciências Biológicas |
| datacite.titles.title.fl_str_mv | Zooplankton communities of the North-Eastern Atlantic: Portuguese offshore waters Comunidades de zooplâncton no Atlântico Nordeste: águas offshore portuguesas |
| dc.contributor.none.fl_str_mv | Gomes, P. A. RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Ferreira, Bruno Alexandre da Silva Panta |
| dc.date.Accepted.fl_str_mv | 2014-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2015-04-07T14:35:09Z |
| dc.date.embargoed.fl_str_mv | 2015-04-07T14:35:09Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/34739 |
| dc.language.none.fl_str_mv | eng |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Ciências Naturais::Ciências Biológicas |
| dc.title.fl_str_mv | Zooplankton communities of the North-Eastern Atlantic: Portuguese offshore waters Comunidades de zooplâncton no Atlântico Nordeste: águas offshore portuguesas |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_bdcc |
| description | Zooplankton plays a key role in ecosystem functioning, as they represent the interface for energy transfer between primary producers and planktivores. Data on zooplankton, although essential to correctly assess the state of marine ecosystems, is still lacking for several regions were the need for answers is crucial. This work aims at establishing a baseline of knowledge on the zooplankton communities in the study area and finding relationships between copepod distribution (beta-diversity) and environmental and spatial factors. The study area was located off the coast of Portugal, limited between 42º and 35ºN and 14º and 9,5ºW. Sampling was conducted on 22 sites using a Bongo net towed from the rear of the ship in a double oblique design until a maximum depth of 215m, and at each site two samples were collected, one for biomass quantification and the other for taxonomical identification. Results showed that spatial effects were the primary drivers of variation on zooplankton biomass, MTG assemblages’ composition and copepod beta-diversity, along with spatially structured environmental variation, which also had an important role. Zooplankton biomass showed the greatest dependence on spatial effects (along with spatially structured environmental variation), showing that biomass alone might not be so susceptible to occasional changes in the environmental variables. MTG assemblages’ composition and copepod beta-diversity showed more complex patterns of variation, but the predominance of spatial effects is a result that, although contrary to the general trend, is in accordance with the hypothesis that inter-regional variability is more complex than a correlation with Sea Surface Temperature. The establishment of a baseline of data for our study area on the studied parameters, especially copepods, is probably the most important conclusion. Calanoid copepods were, as expected, dominant throughout the study area, represented by the genus Calanus, and more specifically, Calanus helgolandicus (Claus, 1863). |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | masterThesis |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/b60d0d49-510b-4844-9d1c-7e3a0c8f534b/download |
| id | rum_b9f2dd0d28ef31b58de75c8bdbddec71 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/34739 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/34739 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Ferreira, Bruno Alexandre da Silva Panta |
| publishDate | 2014 |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engporZooplankton plays a key role in ecosystem functioning, as they represent the interface for energy transfer between primary producers and planktivores. Data on zooplankton, although essential to correctly assess the state of marine ecosystems, is still lacking for several regions were the need for answers is crucial. This work aims at establishing a baseline of knowledge on the zooplankton communities in the study area and finding relationships between copepod distribution (beta-diversity) and environmental and spatial factors. The study area was located off the coast of Portugal, limited between 42º and 35ºN and 14º and 9,5ºW. Sampling was conducted on 22 sites using a Bongo net towed from the rear of the ship in a double oblique design until a maximum depth of 215m, and at each site two samples were collected, one for biomass quantification and the other for taxonomical identification. Results showed that spatial effects were the primary drivers of variation on zooplankton biomass, MTG assemblages’ composition and copepod beta-diversity, along with spatially structured environmental variation, which also had an important role. Zooplankton biomass showed the greatest dependence on spatial effects (along with spatially structured environmental variation), showing that biomass alone might not be so susceptible to occasional changes in the environmental variables. MTG assemblages’ composition and copepod beta-diversity showed more complex patterns of variation, but the predominance of spatial effects is a result that, although contrary to the general trend, is in accordance with the hypothesis that inter-regional variability is more complex than a correlation with Sea Surface Temperature. The establishment of a baseline of data for our study area on the studied parameters, especially copepods, is probably the most important conclusion. Calanoid copepods were, as expected, dominant throughout the study area, represented by the genus Calanus, and more specifically, Calanus helgolandicus (Claus, 1863).application/pdfporZooplankton communities of the North-Eastern Atlantic: Portuguese offshore watersAlternativeTitleengComunidades de zooplâncton no Atlântico Nordeste: águas offshore portuguesasFerreira, Bruno Alexandre da Silva PantaGomes, P. A.HostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptTID2013477842015-04-07T14:35:09Z201420142014-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/34739http://purl.org/coar/access_right/c_abf2open accesshttp://www.oecd.org/science/inno/38235147.pdfFields of Science and Technology (FOS)Ciências Naturais::Ciências Biológicas15004315 bytesliteraturehttp://purl.org/coar/resource_type/c_bdccmaster thesishttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/b60d0d49-510b-4844-9d1c-7e3a0c8f534b/download |
| spellingShingle | Zooplankton communities of the North-Eastern Atlantic: Portuguese offshore waters Ferreira, Bruno Alexandre da Silva Panta Ciências Naturais::Ciências Biológicas |
| status | SINGLETON |
| subject.other.fl_str_mv | Ciências Naturais::Ciências Biológicas |
| title | Zooplankton communities of the North-Eastern Atlantic: Portuguese offshore waters |
| title_full | Zooplankton communities of the North-Eastern Atlantic: Portuguese offshore waters |
| title_fullStr | Zooplankton communities of the North-Eastern Atlantic: Portuguese offshore waters |
| title_full_unstemmed | Zooplankton communities of the North-Eastern Atlantic: Portuguese offshore waters |
| title_short | Zooplankton communities of the North-Eastern Atlantic: Portuguese offshore waters |
| title_sort | Zooplankton communities of the North-Eastern Atlantic: Portuguese offshore waters |
| topic | Ciências Naturais::Ciências Biológicas |
| topic_facet | Ciências Naturais::Ciências Biológicas |
| url | https://hdl.handle.net/1822/34739 |
| visible | 1 |