Ant diversity along a wide rainfall gradient in the Paraguayan dry Chaco
Aridity is expected to affect ant diversity by limiting the availability of resources and causing physiological distress to the ant populations. Studies conducted so far on such relationships are few and results are inconsistent due to confounding factors. Our aim was to survey an area that had an e...
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| Veröffentlicht in: | Journal of arid environments 2010-10, Vol.74 (10), p.1149-1155 |
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| container_title | Journal of arid environments |
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| creator | Delsinne, T. Roisin, Y. Herbauts, J. Leponce, M. |
| description | Aridity is expected to affect ant diversity by limiting the availability of resources and causing physiological distress to the ant populations. Studies conducted so far on such relationships are few and results are inconsistent due to confounding factors. Our aim was to survey an area that had an extended rainfall gradient, with minimal temperature and topography variations, to determine whether ant diversity was negatively correlated to aridity. The study was carried out in 11 localities along a 400 km-long transect in the Paraguayan dry Chaco. Mean annual rainfall ranged from 460 to 887 mm. In total, 197 ant species were collected. At the studied regional scale, our results did not confirm that aridity constitutes an environmental filter reducing ant diversity, neither at specific nor at higher-phylogenetic levels. Based on our results and of those extracted from the literature, rainfall seems to have either no influence or a negative one on ant alpha-diversity at both regional and larger geographical scales, except when rainfall is very low (e.g. |
| doi_str_mv | 10.1016/j.jaridenv.2010.03.014 |
| format | Article |
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Studies conducted so far on such relationships are few and results are inconsistent due to confounding factors. Our aim was to survey an area that had an extended rainfall gradient, with minimal temperature and topography variations, to determine whether ant diversity was negatively correlated to aridity. The study was carried out in 11 localities along a 400 km-long transect in the Paraguayan dry Chaco. Mean annual rainfall ranged from 460 to 887 mm. In total, 197 ant species were collected. At the studied regional scale, our results did not confirm that aridity constitutes an environmental filter reducing ant diversity, neither at specific nor at higher-phylogenetic levels. Based on our results and of those extracted from the literature, rainfall seems to have either no influence or a negative one on ant alpha-diversity at both regional and larger geographical scales, except when rainfall is very low (e.g. <200 mm). This pattern contrasts with what is classically observed for a large majority of other taxa.</description><identifier>ISSN: 0140-1963</identifier><identifier>EISSN: 1095-922X</identifier><identifier>DOI: 10.1016/j.jaridenv.2010.03.014</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Alpha-diversity ; Annual rainfall ; Aridity ; Availability ; Constraining ; Correlation ; distress ; Drying ; Formicidae ; Phylogenetic structure ; Precipitation ; rain ; Rainfall ; Regional ; species diversity ; Species richness ; temperature ; Topography ; Tropical dry forest</subject><ispartof>Journal of arid environments, 2010-10, Vol.74 (10), p.1149-1155</ispartof><rights>2010 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c401t-a68b06961ae7b39ccc2f3535673da1c5733af645f0c160238e4afa3051a02bd63</citedby><cites>FETCH-LOGICAL-c401t-a68b06961ae7b39ccc2f3535673da1c5733af645f0c160238e4afa3051a02bd63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jaridenv.2010.03.014$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Delsinne, T.</creatorcontrib><creatorcontrib>Roisin, Y.</creatorcontrib><creatorcontrib>Herbauts, J.</creatorcontrib><creatorcontrib>Leponce, M.</creatorcontrib><title>Ant diversity along a wide rainfall gradient in the Paraguayan dry Chaco</title><title>Journal of arid environments</title><description>Aridity is expected to affect ant diversity by limiting the availability of resources and causing physiological distress to the ant populations. Studies conducted so far on such relationships are few and results are inconsistent due to confounding factors. Our aim was to survey an area that had an extended rainfall gradient, with minimal temperature and topography variations, to determine whether ant diversity was negatively correlated to aridity. The study was carried out in 11 localities along a 400 km-long transect in the Paraguayan dry Chaco. Mean annual rainfall ranged from 460 to 887 mm. In total, 197 ant species were collected. At the studied regional scale, our results did not confirm that aridity constitutes an environmental filter reducing ant diversity, neither at specific nor at higher-phylogenetic levels. Based on our results and of those extracted from the literature, rainfall seems to have either no influence or a negative one on ant alpha-diversity at both regional and larger geographical scales, except when rainfall is very low (e.g. <200 mm). This pattern contrasts with what is classically observed for a large majority of other taxa.</description><subject>Alpha-diversity</subject><subject>Annual rainfall</subject><subject>Aridity</subject><subject>Availability</subject><subject>Constraining</subject><subject>Correlation</subject><subject>distress</subject><subject>Drying</subject><subject>Formicidae</subject><subject>Phylogenetic structure</subject><subject>Precipitation</subject><subject>rain</subject><subject>Rainfall</subject><subject>Regional</subject><subject>species diversity</subject><subject>Species richness</subject><subject>temperature</subject><subject>Topography</subject><subject>Tropical dry forest</subject><issn>0140-1963</issn><issn>1095-922X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNqFkF1LwzAUhoMoOD_-guZObzrPaZp0vXMMv0BQ0IF34SxNt4yunUk32b83ZXqrVwdenvc98DB2gTBEQHWzHC7Ju9I222EKMQQxBMwO2AChkEmRph-HbBATSLBQ4pidhLAEQJRSDNjjuOl46bbWB9ftONVtM-fEv-Ie9-Saiuqazz2VzkbQNbxbWP5KnuYb2lHDS7_jkwWZ9owdRTbY8597yqb3d--Tx-T55eFpMn5OTAbYJaRGM1CFQrL5TBTGmLQSUkiVi5LQyFwIqlQmKzCoIBUjm1FFAiQSpLNSiVN2td9d-_ZzY0OnVy4YW9fU2HYTdC4LgZAWEMnrP0nM8xxBFKofVXvU-DYEbyu99m5FfqcRdC9ZL_WvZN1L1iB0VBqLl_tiRa2muXdBT9_SXjaAwkz2xO2esFHK1lmvg4kujS2dt6bTZev-e_INBqqQzA</recordid><startdate>20101001</startdate><enddate>20101001</enddate><creator>Delsinne, T.</creator><creator>Roisin, Y.</creator><creator>Herbauts, J.</creator><creator>Leponce, M.</creator><general>Elsevier Ltd</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SU</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope><scope>7QH</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>7UA</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>SOI</scope></search><sort><creationdate>20101001</creationdate><title>Ant diversity along a wide rainfall gradient in the Paraguayan dry Chaco</title><author>Delsinne, T. ; Roisin, Y. ; Herbauts, J. ; Leponce, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c401t-a68b06961ae7b39ccc2f3535673da1c5733af645f0c160238e4afa3051a02bd63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Alpha-diversity</topic><topic>Annual rainfall</topic><topic>Aridity</topic><topic>Availability</topic><topic>Constraining</topic><topic>Correlation</topic><topic>distress</topic><topic>Drying</topic><topic>Formicidae</topic><topic>Phylogenetic structure</topic><topic>Precipitation</topic><topic>rain</topic><topic>Rainfall</topic><topic>Regional</topic><topic>species diversity</topic><topic>Species richness</topic><topic>temperature</topic><topic>Topography</topic><topic>Tropical dry forest</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Delsinne, T.</creatorcontrib><creatorcontrib>Roisin, Y.</creatorcontrib><creatorcontrib>Herbauts, J.</creatorcontrib><creatorcontrib>Leponce, M.</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>Environmental Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Aqualine</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><jtitle>Journal of arid environments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Delsinne, T.</au><au>Roisin, Y.</au><au>Herbauts, J.</au><au>Leponce, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ant diversity along a wide rainfall gradient in the Paraguayan dry Chaco</atitle><jtitle>Journal of arid environments</jtitle><date>2010-10-01</date><risdate>2010</risdate><volume>74</volume><issue>10</issue><spage>1149</spage><epage>1155</epage><pages>1149-1155</pages><issn>0140-1963</issn><eissn>1095-922X</eissn><abstract>Aridity is expected to affect ant diversity by limiting the availability of resources and causing physiological distress to the ant populations. Studies conducted so far on such relationships are few and results are inconsistent due to confounding factors. Our aim was to survey an area that had an extended rainfall gradient, with minimal temperature and topography variations, to determine whether ant diversity was negatively correlated to aridity. The study was carried out in 11 localities along a 400 km-long transect in the Paraguayan dry Chaco. Mean annual rainfall ranged from 460 to 887 mm. In total, 197 ant species were collected. At the studied regional scale, our results did not confirm that aridity constitutes an environmental filter reducing ant diversity, neither at specific nor at higher-phylogenetic levels. Based on our results and of those extracted from the literature, rainfall seems to have either no influence or a negative one on ant alpha-diversity at both regional and larger geographical scales, except when rainfall is very low (e.g. <200 mm). 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| subjects | Alpha-diversity Annual rainfall Aridity Availability Constraining Correlation distress Drying Formicidae Phylogenetic structure Precipitation rain Rainfall Regional species diversity Species richness temperature Topography Tropical dry forest |
| title | Ant diversity along a wide rainfall gradient in the Paraguayan dry Chaco |
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