Floristic composition and similarity of a conservation area in the semiarid region of Paraíba State, Northeastern Brazil

Abstract We present here a floristic survey of the angiosperms found in the Reserva Ecológica Olho d’Água das Onças (REODO) in the semiarid region of Paraíba State, Brazil, to provide a basis for proactive conservation projects there. Fifteen excursions were carried out between August/2022 and April...

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Veröffentlicht in:Biota Neotropica 2024-01, Vol.24 (4), p.1-23
Hauptverfasser: Rocha, Bernardo de Farias, Luz, Guilherme Araújo da, Rodrigues, Michel Martins, Monteiro, Fernanda Kalina da Silva, Lima, Ana Paula da Silva, Trovão, Dilma Maria de Brito Melo, Melo, José Iranildo Miranda de
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container_issue 4
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container_title Biota Neotropica
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creator Rocha, Bernardo de Farias
Luz, Guilherme Araújo da
Rodrigues, Michel Martins
Monteiro, Fernanda Kalina da Silva
Lima, Ana Paula da Silva
Trovão, Dilma Maria de Brito Melo
Melo, José Iranildo Miranda de
description Abstract We present here a floristic survey of the angiosperms found in the Reserva Ecológica Olho d’Água das Onças (REODO) in the semiarid region of Paraíba State, Brazil, to provide a basis for proactive conservation projects there. Fifteen excursions were carried out between August/2022 and April/2024 employing traditional methods of collecting and herborization of botanical material. The collections obtained were incorporated into the Manuel de Arruda Câmara Herbarium (HACAM) at the State University of Paraíba (UEPB), Campus I. We examined the floristic relationships between the study area and 15 other floristic surveys throughout the semiarid region of Paraíba State using a similarity analysis based on the Jaccard index. Two hundred and fifty species distributed among 168 genera and 50 families of angiosperms were identified with the following growth forms: herbaceous (74 spp.), subshrub (60 spp.), shrub (48 spp.), climber (45 spp.), arboreal (17 spp.), epiphytic (3 spp.), and parasitic (3 spp.). The most representative families were Fabaceae (38 spp.), Euphorbiaceae (24 spp.), Convolvulaceae (19 spp.), Malvaceae (18 spp.), Asteraceae (11 spp.), and Poaceae (11 spp.). The most representative genera were Ipomoea L. (8 spp.), Croton L. (7 spp.), Sida L. (7 spp.), Chamaecrista (L.) Moench (6 spp.), and Mimosa L. (5 spp.). Heteropterys arcuata C. Pessoa & Amorim (Malpighiaceae) and Solanum fernandesii V.S. Samp. & R. Moura (Solanaceae) were recorded for the first time in Paraíba State; Urvillea stipitata Radlk (Sapindaceae) represents a new record for the Caatinga. Similarity analysis revealed that the flora of REODO is more closely related to that of protected areas throughout the semiarid region of Paraíba State, underscoring its conservation priority. The study area was therefore found to contain significant floristic richness, especially within the context of the Caatinga, with 30 species endemics to this domain. Resumo O presente estudo compreende o levantamento florístico das angiospermas da Reserva Ecológica Olho d’Água das Onças (REODO), Picuí, semiárido da Paraíba, Brasil, objetivando fornecer a base para projetos conservacionistas na área. Foram realizadas 15 incursões durante o período de agosto de 2022 e abril de 2024, seguindo os métodos usuais de coleta e herborização de material botânico. A coleção obtida foi incorporada ao Herbário Manuel de Arruda Câmara (HACAM), pertencente à Universidade Estadual da Paraíba (UEPB), Campus I. Verificaram
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Fifteen excursions were carried out between August/2022 and April/2024 employing traditional methods of collecting and herborization of botanical material. The collections obtained were incorporated into the Manuel de Arruda Câmara Herbarium (HACAM) at the State University of Paraíba (UEPB), Campus I. We examined the floristic relationships between the study area and 15 other floristic surveys throughout the semiarid region of Paraíba State using a similarity analysis based on the Jaccard index. Two hundred and fifty species distributed among 168 genera and 50 families of angiosperms were identified with the following growth forms: herbaceous (74 spp.), subshrub (60 spp.), shrub (48 spp.), climber (45 spp.), arboreal (17 spp.), epiphytic (3 spp.), and parasitic (3 spp.). The most representative families were Fabaceae (38 spp.), Euphorbiaceae (24 spp.), Convolvulaceae (19 spp.), Malvaceae (18 spp.), Asteraceae (11 spp.), and Poaceae (11 spp.). The most representative genera were Ipomoea L. (8 spp.), Croton L. (7 spp.), Sida L. (7 spp.), Chamaecrista (L.) Moench (6 spp.), and Mimosa L. (5 spp.). Heteropterys arcuata C. Pessoa &amp; Amorim (Malpighiaceae) and Solanum fernandesii V.S. Samp. &amp; R. Moura (Solanaceae) were recorded for the first time in Paraíba State; Urvillea stipitata Radlk (Sapindaceae) represents a new record for the Caatinga. Similarity analysis revealed that the flora of REODO is more closely related to that of protected areas throughout the semiarid region of Paraíba State, underscoring its conservation priority. The study area was therefore found to contain significant floristic richness, especially within the context of the Caatinga, with 30 species endemics to this domain. Resumo O presente estudo compreende o levantamento florístico das angiospermas da Reserva Ecológica Olho d’Água das Onças (REODO), Picuí, semiárido da Paraíba, Brasil, objetivando fornecer a base para projetos conservacionistas na área. Foram realizadas 15 incursões durante o período de agosto de 2022 e abril de 2024, seguindo os métodos usuais de coleta e herborização de material botânico. A coleção obtida foi incorporada ao Herbário Manuel de Arruda Câmara (HACAM), pertencente à Universidade Estadual da Paraíba (UEPB), Campus I. Verificaram-se as conexões da flora da área estudada com outras áreas do semiárido paraibano por meio de uma análise de similaridade com base no índice de Jaccard, considerando outros 15 estudos florísticos. Nós encontramos 250 espécies distribuídas em 168 gêneros e 50 famílias de angiospermas pertencentes aos hábitos: herbáceo (74 spp.), subarbustivo (60 spp.), arbustivo (48 spp.), trepador (45 spp.), arbóreo (17 spp.), epifítico (3 spp.) e parasita (3 spp.). As famílias mais representativas foram: Fabaceae (38 spp.), Euphorbiaceae (24 spp.), Convolvulaceae (19 spp.), Malvaceae (18 spp.), Asteraceae (11 spp.) e Poaceae (11 spp.), e dentre os gêneros, Ipomoea L. (8 spp.), Croton L. (7 spp.), Sida L. (7 spp.), Chamaecrista (L.) Moench (6 spp.) e Mimosa L. (5 spp.) foram os mais numerosos. Heteropterys arcuata C. Pessoa &amp; Amorim (Malpighiaceae) e Solanum fernandesii V.S. Samp. &amp; R. Moura (Solanaceae) são registradas pela primeira vez para o Estado da Paraíba, e Urvillea stipitata Radlk (Sapindaceae) é um novo registro para a Caatinga. A análise de similaridade evidenciou que a flora da REODO é mais similar às das áreas protegidas no Estado da Paraíba, demonstrando a importância do seu reconhecimento como área prioritária para a conservação. Em suma, evidenciamos que a área de estudo apresenta uma expressiva riqueza florística especialmente no contexto da Caatinga, contando com 30 espécies endêmicas deste domínio.</description><identifier>ISSN: 1676-0611</identifier><identifier>ISSN: 1806-129X</identifier><identifier>EISSN: 1676-0611</identifier><identifier>EISSN: 1676-0603</identifier><identifier>DOI: 10.1590/1676-0611-bn-2024-1667</identifier><language>eng</language><publisher>Campinas: Instituto Virtual da Biodiversidade</publisher><subject>Angiosperms ; Asteraceae ; Biodiversity ; BIODIVERSITY CONSERVATION ; Chamaecrista ; Collections ; Conservation ; Conservation areas ; Convolvulaceae ; Euphorbiaceae ; Fabaceae ; Flora ; Heteropterys ; Ipomoea ; Malpighiaceae ; Malvaceae ; New records ; Plants ; Poaceae ; Protected areas ; Sapindaceae ; Semi arid areas ; Semiarid zones ; Similarity ; Solanaceae ; Solanum ; Species composition ; Surveys ; Taxonomy ; Urvillea</subject><ispartof>Biota Neotropica, 2024-01, Vol.24 (4), p.1-23</ispartof><rights>Copyright Instituto Virtual da Biodiversidade 2024</rights><rights>This work is licensed under a Creative Commons Attribution 4.0 International License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c247t-432bfde6c1285a0550ee435401d04257908367a986f12e65d10a6d50565020733</cites><orcidid>0009-0000-6848-349X ; 0000-0002-9404-3807 ; 0000-0002-9174-996X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids></links><search><creatorcontrib>Rocha, Bernardo de Farias</creatorcontrib><creatorcontrib>Luz, Guilherme Araújo da</creatorcontrib><creatorcontrib>Rodrigues, Michel Martins</creatorcontrib><creatorcontrib>Monteiro, Fernanda Kalina da Silva</creatorcontrib><creatorcontrib>Lima, Ana Paula da Silva</creatorcontrib><creatorcontrib>Trovão, Dilma Maria de Brito Melo</creatorcontrib><creatorcontrib>Melo, José Iranildo Miranda de</creatorcontrib><title>Floristic composition and similarity of a conservation area in the semiarid region of Paraíba State, Northeastern Brazil</title><title>Biota Neotropica</title><addtitle>Biota Neotrop</addtitle><description>Abstract We present here a floristic survey of the angiosperms found in the Reserva Ecológica Olho d’Água das Onças (REODO) in the semiarid region of Paraíba State, Brazil, to provide a basis for proactive conservation projects there. Fifteen excursions were carried out between August/2022 and April/2024 employing traditional methods of collecting and herborization of botanical material. The collections obtained were incorporated into the Manuel de Arruda Câmara Herbarium (HACAM) at the State University of Paraíba (UEPB), Campus I. We examined the floristic relationships between the study area and 15 other floristic surveys throughout the semiarid region of Paraíba State using a similarity analysis based on the Jaccard index. Two hundred and fifty species distributed among 168 genera and 50 families of angiosperms were identified with the following growth forms: herbaceous (74 spp.), subshrub (60 spp.), shrub (48 spp.), climber (45 spp.), arboreal (17 spp.), epiphytic (3 spp.), and parasitic (3 spp.). The most representative families were Fabaceae (38 spp.), Euphorbiaceae (24 spp.), Convolvulaceae (19 spp.), Malvaceae (18 spp.), Asteraceae (11 spp.), and Poaceae (11 spp.). The most representative genera were Ipomoea L. (8 spp.), Croton L. (7 spp.), Sida L. (7 spp.), Chamaecrista (L.) Moench (6 spp.), and Mimosa L. (5 spp.). Heteropterys arcuata C. Pessoa &amp; Amorim (Malpighiaceae) and Solanum fernandesii V.S. Samp. &amp; R. Moura (Solanaceae) were recorded for the first time in Paraíba State; Urvillea stipitata Radlk (Sapindaceae) represents a new record for the Caatinga. Similarity analysis revealed that the flora of REODO is more closely related to that of protected areas throughout the semiarid region of Paraíba State, underscoring its conservation priority. The study area was therefore found to contain significant floristic richness, especially within the context of the Caatinga, with 30 species endemics to this domain. Resumo O presente estudo compreende o levantamento florístico das angiospermas da Reserva Ecológica Olho d’Água das Onças (REODO), Picuí, semiárido da Paraíba, Brasil, objetivando fornecer a base para projetos conservacionistas na área. Foram realizadas 15 incursões durante o período de agosto de 2022 e abril de 2024, seguindo os métodos usuais de coleta e herborização de material botânico. A coleção obtida foi incorporada ao Herbário Manuel de Arruda Câmara (HACAM), pertencente à Universidade Estadual da Paraíba (UEPB), Campus I. Verificaram-se as conexões da flora da área estudada com outras áreas do semiárido paraibano por meio de uma análise de similaridade com base no índice de Jaccard, considerando outros 15 estudos florísticos. Nós encontramos 250 espécies distribuídas em 168 gêneros e 50 famílias de angiospermas pertencentes aos hábitos: herbáceo (74 spp.), subarbustivo (60 spp.), arbustivo (48 spp.), trepador (45 spp.), arbóreo (17 spp.), epifítico (3 spp.) e parasita (3 spp.). As famílias mais representativas foram: Fabaceae (38 spp.), Euphorbiaceae (24 spp.), Convolvulaceae (19 spp.), Malvaceae (18 spp.), Asteraceae (11 spp.) e Poaceae (11 spp.), e dentre os gêneros, Ipomoea L. (8 spp.), Croton L. (7 spp.), Sida L. (7 spp.), Chamaecrista (L.) Moench (6 spp.) e Mimosa L. (5 spp.) foram os mais numerosos. Heteropterys arcuata C. Pessoa &amp; Amorim (Malpighiaceae) e Solanum fernandesii V.S. Samp. &amp; R. Moura (Solanaceae) são registradas pela primeira vez para o Estado da Paraíba, e Urvillea stipitata Radlk (Sapindaceae) é um novo registro para a Caatinga. A análise de similaridade evidenciou que a flora da REODO é mais similar às das áreas protegidas no Estado da Paraíba, demonstrando a importância do seu reconhecimento como área prioritária para a conservação. Em suma, evidenciamos que a área de estudo apresenta uma expressiva riqueza florística especialmente no contexto da Caatinga, contando com 30 espécies endêmicas deste domínio.</description><subject>Angiosperms</subject><subject>Asteraceae</subject><subject>Biodiversity</subject><subject>BIODIVERSITY CONSERVATION</subject><subject>Chamaecrista</subject><subject>Collections</subject><subject>Conservation</subject><subject>Conservation areas</subject><subject>Convolvulaceae</subject><subject>Euphorbiaceae</subject><subject>Fabaceae</subject><subject>Flora</subject><subject>Heteropterys</subject><subject>Ipomoea</subject><subject>Malpighiaceae</subject><subject>Malvaceae</subject><subject>New records</subject><subject>Plants</subject><subject>Poaceae</subject><subject>Protected areas</subject><subject>Sapindaceae</subject><subject>Semi arid areas</subject><subject>Semiarid zones</subject><subject>Similarity</subject><subject>Solanaceae</subject><subject>Solanum</subject><subject>Species composition</subject><subject>Surveys</subject><subject>Taxonomy</subject><subject>Urvillea</subject><issn>1676-0611</issn><issn>1806-129X</issn><issn>1676-0611</issn><issn>1676-0603</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNpNkeFKwzAQx4MoOKevIAG_2nlJmrT9qMOpMFSYfg5pm2pG28wkE-Y7-RS-mCkVFe64g__v_gd3CJ0SmBFewAURmUhAEJKUfUKBpgkRIttDk19h_19_iI68XwPQIs3yCdotWuuMD6bCle021ptgbI9VX2NvOtMqZ8IO2warqPdeu3c1Ak4rbHocXjX2ujORq7HTL4MW6Ufl1NdnqfAqqKDP8b11kVQ-aNfjK6c-THuMDhrVen3yU6foeXH9NL9Nlg83d_PLZVLRNAtJymjZ1FpUhOZcAeegdcp4CqSGlPKsgJyJTBW5aAjVgtcElKg5cMGBQsbYFM1GX18Z3Vq5tlvXx4VyNdxEggA2HA0AYrIYU3Q2DmycfdtqH_5GGOGc5UVaiEiJkaqc9d7pRm6c6ZTbSQJy-Iv8sSdElr0cVsjhL-wbbKZ--w</recordid><startdate>20240101</startdate><enddate>20240101</enddate><creator>Rocha, Bernardo de Farias</creator><creator>Luz, Guilherme Araújo da</creator><creator>Rodrigues, Michel Martins</creator><creator>Monteiro, Fernanda Kalina da Silva</creator><creator>Lima, Ana Paula da Silva</creator><creator>Trovão, Dilma Maria de Brito Melo</creator><creator>Melo, José Iranildo Miranda de</creator><general>Instituto Virtual da Biodiversidade</general><general>Instituto Virtual da Biodiversidade | BIOTA - FAPESP</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>4T-</scope><scope>7QG</scope><scope>7SN</scope><scope>7SS</scope><scope>7X2</scope><scope>7XB</scope><scope>88A</scope><scope>88I</scope><scope>8FE</scope><scope>8FH</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>CLZPN</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H95</scope><scope>HCIFZ</scope><scope>L.G</scope><scope>LK8</scope><scope>M0K</scope><scope>M2O</scope><scope>M2P</scope><scope>M7P</scope><scope>MBDVC</scope><scope>PADUT</scope><scope>PATMY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>GPN</scope><orcidid>https://orcid.org/0009-0000-6848-349X</orcidid><orcidid>https://orcid.org/0000-0002-9404-3807</orcidid><orcidid>https://orcid.org/0000-0002-9174-996X</orcidid></search><sort><creationdate>20240101</creationdate><title>Floristic composition and similarity of a conservation area in the semiarid region of Paraíba State, Northeastern Brazil</title><author>Rocha, Bernardo de Farias ; Luz, Guilherme Araújo da ; Rodrigues, Michel Martins ; Monteiro, Fernanda Kalina da Silva ; Lima, Ana Paula da Silva ; Trovão, Dilma Maria de Brito Melo ; Melo, José Iranildo Miranda de</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c247t-432bfde6c1285a0550ee435401d04257908367a986f12e65d10a6d50565020733</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Angiosperms</topic><topic>Asteraceae</topic><topic>Biodiversity</topic><topic>BIODIVERSITY CONSERVATION</topic><topic>Chamaecrista</topic><topic>Collections</topic><topic>Conservation</topic><topic>Conservation areas</topic><topic>Convolvulaceae</topic><topic>Euphorbiaceae</topic><topic>Fabaceae</topic><topic>Flora</topic><topic>Heteropterys</topic><topic>Ipomoea</topic><topic>Malpighiaceae</topic><topic>Malvaceae</topic><topic>New records</topic><topic>Plants</topic><topic>Poaceae</topic><topic>Protected areas</topic><topic>Sapindaceae</topic><topic>Semi arid areas</topic><topic>Semiarid zones</topic><topic>Similarity</topic><topic>Solanaceae</topic><topic>Solanum</topic><topic>Species composition</topic><topic>Surveys</topic><topic>Taxonomy</topic><topic>Urvillea</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rocha, Bernardo de Farias</creatorcontrib><creatorcontrib>Luz, Guilherme Araújo da</creatorcontrib><creatorcontrib>Rodrigues, Michel Martins</creatorcontrib><creatorcontrib>Monteiro, Fernanda Kalina da Silva</creatorcontrib><creatorcontrib>Lima, Ana Paula da Silva</creatorcontrib><creatorcontrib>Trovão, Dilma Maria de Brito Melo</creatorcontrib><creatorcontrib>Melo, José Iranildo Miranda de</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Docstoc</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Agricultural Science Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural &amp; Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>Latin America &amp; Iberia Database</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>Aquatic Science &amp; Fisheries Abstracts (ASFA) 1: Biological Sciences &amp; Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Aquatic Science &amp; Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Biological Science Collection</collection><collection>Agricultural Science Database</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Biological Science Database</collection><collection>Research Library (Corporate)</collection><collection>Research Library China</collection><collection>Environmental Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>SciELO</collection><jtitle>Biota Neotropica</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rocha, Bernardo de Farias</au><au>Luz, Guilherme Araújo da</au><au>Rodrigues, Michel Martins</au><au>Monteiro, Fernanda Kalina da Silva</au><au>Lima, Ana Paula da Silva</au><au>Trovão, Dilma Maria de Brito Melo</au><au>Melo, José Iranildo Miranda de</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Floristic composition and similarity of a conservation area in the semiarid region of Paraíba State, Northeastern Brazil</atitle><jtitle>Biota Neotropica</jtitle><addtitle>Biota Neotrop</addtitle><date>2024-01-01</date><risdate>2024</risdate><volume>24</volume><issue>4</issue><spage>1</spage><epage>23</epage><pages>1-23</pages><issn>1676-0611</issn><issn>1806-129X</issn><eissn>1676-0611</eissn><eissn>1676-0603</eissn><abstract>Abstract We present here a floristic survey of the angiosperms found in the Reserva Ecológica Olho d’Água das Onças (REODO) in the semiarid region of Paraíba State, Brazil, to provide a basis for proactive conservation projects there. Fifteen excursions were carried out between August/2022 and April/2024 employing traditional methods of collecting and herborization of botanical material. The collections obtained were incorporated into the Manuel de Arruda Câmara Herbarium (HACAM) at the State University of Paraíba (UEPB), Campus I. We examined the floristic relationships between the study area and 15 other floristic surveys throughout the semiarid region of Paraíba State using a similarity analysis based on the Jaccard index. Two hundred and fifty species distributed among 168 genera and 50 families of angiosperms were identified with the following growth forms: herbaceous (74 spp.), subshrub (60 spp.), shrub (48 spp.), climber (45 spp.), arboreal (17 spp.), epiphytic (3 spp.), and parasitic (3 spp.). The most representative families were Fabaceae (38 spp.), Euphorbiaceae (24 spp.), Convolvulaceae (19 spp.), Malvaceae (18 spp.), Asteraceae (11 spp.), and Poaceae (11 spp.). The most representative genera were Ipomoea L. (8 spp.), Croton L. (7 spp.), Sida L. (7 spp.), Chamaecrista (L.) Moench (6 spp.), and Mimosa L. (5 spp.). Heteropterys arcuata C. Pessoa &amp; Amorim (Malpighiaceae) and Solanum fernandesii V.S. Samp. &amp; R. Moura (Solanaceae) were recorded for the first time in Paraíba State; Urvillea stipitata Radlk (Sapindaceae) represents a new record for the Caatinga. Similarity analysis revealed that the flora of REODO is more closely related to that of protected areas throughout the semiarid region of Paraíba State, underscoring its conservation priority. The study area was therefore found to contain significant floristic richness, especially within the context of the Caatinga, with 30 species endemics to this domain. Resumo O presente estudo compreende o levantamento florístico das angiospermas da Reserva Ecológica Olho d’Água das Onças (REODO), Picuí, semiárido da Paraíba, Brasil, objetivando fornecer a base para projetos conservacionistas na área. Foram realizadas 15 incursões durante o período de agosto de 2022 e abril de 2024, seguindo os métodos usuais de coleta e herborização de material botânico. A coleção obtida foi incorporada ao Herbário Manuel de Arruda Câmara (HACAM), pertencente à Universidade Estadual da Paraíba (UEPB), Campus I. Verificaram-se as conexões da flora da área estudada com outras áreas do semiárido paraibano por meio de uma análise de similaridade com base no índice de Jaccard, considerando outros 15 estudos florísticos. Nós encontramos 250 espécies distribuídas em 168 gêneros e 50 famílias de angiospermas pertencentes aos hábitos: herbáceo (74 spp.), subarbustivo (60 spp.), arbustivo (48 spp.), trepador (45 spp.), arbóreo (17 spp.), epifítico (3 spp.) e parasita (3 spp.). As famílias mais representativas foram: Fabaceae (38 spp.), Euphorbiaceae (24 spp.), Convolvulaceae (19 spp.), Malvaceae (18 spp.), Asteraceae (11 spp.) e Poaceae (11 spp.), e dentre os gêneros, Ipomoea L. (8 spp.), Croton L. (7 spp.), Sida L. (7 spp.), Chamaecrista (L.) Moench (6 spp.) e Mimosa L. (5 spp.) foram os mais numerosos. Heteropterys arcuata C. Pessoa &amp; Amorim (Malpighiaceae) e Solanum fernandesii V.S. Samp. &amp; R. Moura (Solanaceae) são registradas pela primeira vez para o Estado da Paraíba, e Urvillea stipitata Radlk (Sapindaceae) é um novo registro para a Caatinga. A análise de similaridade evidenciou que a flora da REODO é mais similar às das áreas protegidas no Estado da Paraíba, demonstrando a importância do seu reconhecimento como área prioritária para a conservação. Em suma, evidenciamos que a área de estudo apresenta uma expressiva riqueza florística especialmente no contexto da Caatinga, contando com 30 espécies endêmicas deste domínio.</abstract><cop>Campinas</cop><pub>Instituto Virtual da Biodiversidade</pub><doi>10.1590/1676-0611-bn-2024-1667</doi><tpages>23</tpages><orcidid>https://orcid.org/0009-0000-6848-349X</orcidid><orcidid>https://orcid.org/0000-0002-9404-3807</orcidid><orcidid>https://orcid.org/0000-0002-9174-996X</orcidid><oa>free_for_read</oa></addata></record>
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identifier ISSN: 1676-0611
ispartof Biota Neotropica, 2024-01, Vol.24 (4), p.1-23
issn 1676-0611
1806-129X
1676-0611
1676-0603
language eng
recordid cdi_scielo_journals_S1676_06032024000400300
source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects Angiosperms
Asteraceae
Biodiversity
BIODIVERSITY CONSERVATION
Chamaecrista
Collections
Conservation
Conservation areas
Convolvulaceae
Euphorbiaceae
Fabaceae
Flora
Heteropterys
Ipomoea
Malpighiaceae
Malvaceae
New records
Plants
Poaceae
Protected areas
Sapindaceae
Semi arid areas
Semiarid zones
Similarity
Solanaceae
Solanum
Species composition
Surveys
Taxonomy
Urvillea
title Floristic composition and similarity of a conservation area in the semiarid region of Paraíba State, Northeastern Brazil
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