Short-term spider community monitoring after cattle removal in grazed grassland
ABSTRACT. At the Pampa Biome, grazing, like others disturbances, affects fauna and flora, creating heterogeneity in the environment. Little is known about how the diversity and richness of arthropods change during this impact. To improve the knowledge of how spider diversity is affected by grazing,...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Fundação Zoobotânica do Rio Grande do Sul
2017-10-01
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| Series: | Iheringia: Série Zoologia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100233&lng=en&tlng=en |
| _version_ | 1818933626910277632 |
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| author | Guilherme O. da Silva Ricardo Ott |
| author_facet | Guilherme O. da Silva Ricardo Ott |
| author_sort | Guilherme O. da Silva |
| collection | DOAJ |
| description | ABSTRACT. At the Pampa Biome, grazing, like others disturbances, affects fauna and flora, creating heterogeneity in the environment. Little is known about how the diversity and richness of arthropods change during this impact. To improve the knowledge of how spider diversity is affected by grazing, experiments were realized at Pampa. The hypothesis is that abundance of spider will be different when comparing grazed and ungrazed areas. A paired block, with two areas of one hectare each, was established in three areas in the Environmental Protection Area of Ibirapuitã (APA Ibirapuitã), state of Rio Grande do Sul, Brazil. One of these hectares was closed with fences, excluding the catle grazing, in August of 2012. Samplings were realized in November of 2011, 2012 and 2013 using Pitfall traps filled with formol 4% and disposed in an “X” format in each area. For statistical analyses, T test, ANOSIM, ANOVA and Rarefaction were performed. A total of 1,315 spiders were captured, comprising 77 species or morphospecies belonging to 20 families. The family most abundant was Lycosidae followed by Hahniidae, Linyphiidae and Theridiidae. Linyphiidae was the richest family with 14 species or morphospecies identified. All spiders, adults and juveniles, only adults in species and morphospecies, and most abundant species were used as models for statistics. These models revealed no significant difference between grazed and ungrazed areas after three and 15 months of cattle exclusion. |
| first_indexed | 2024-12-20T04:51:23Z |
| format | Article |
| id | doaj.art-eea62a959a884c4b9da27d6323614884 |
| institution | Directory Open Access Journal |
| issn | 1678-4766 |
| language | English |
| last_indexed | 2024-12-20T04:51:23Z |
| publishDate | 2017-10-01 |
| publisher | Fundação Zoobotânica do Rio Grande do Sul |
| record_format | Article |
| series | Iheringia: Série Zoologia |
| spelling | doaj.art-eea62a959a884c4b9da27d63236148842022-12-21T19:52:50ZengFundação Zoobotânica do Rio Grande do SulIheringia: Série Zoologia1678-47662017-10-01107010.1590/1678-4766e2017033S0073-47212017000100233Short-term spider community monitoring after cattle removal in grazed grasslandGuilherme O. da SilvaRicardo OttABSTRACT. At the Pampa Biome, grazing, like others disturbances, affects fauna and flora, creating heterogeneity in the environment. Little is known about how the diversity and richness of arthropods change during this impact. To improve the knowledge of how spider diversity is affected by grazing, experiments were realized at Pampa. The hypothesis is that abundance of spider will be different when comparing grazed and ungrazed areas. A paired block, with two areas of one hectare each, was established in three areas in the Environmental Protection Area of Ibirapuitã (APA Ibirapuitã), state of Rio Grande do Sul, Brazil. One of these hectares was closed with fences, excluding the catle grazing, in August of 2012. Samplings were realized in November of 2011, 2012 and 2013 using Pitfall traps filled with formol 4% and disposed in an “X” format in each area. For statistical analyses, T test, ANOSIM, ANOVA and Rarefaction were performed. A total of 1,315 spiders were captured, comprising 77 species or morphospecies belonging to 20 families. The family most abundant was Lycosidae followed by Hahniidae, Linyphiidae and Theridiidae. Linyphiidae was the richest family with 14 species or morphospecies identified. All spiders, adults and juveniles, only adults in species and morphospecies, and most abundant species were used as models for statistics. These models revealed no significant difference between grazed and ungrazed areas after three and 15 months of cattle exclusion.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100233&lng=en&tlng=enNeotropicalPampadiversidadeAraneae |
| spellingShingle | Guilherme O. da Silva Ricardo Ott Short-term spider community monitoring after cattle removal in grazed grassland Iheringia: Série Zoologia Neotropical Pampa diversidade Araneae |
| title | Short-term spider community monitoring after cattle removal in grazed grassland |
| title_full | Short-term spider community monitoring after cattle removal in grazed grassland |
| title_fullStr | Short-term spider community monitoring after cattle removal in grazed grassland |
| title_full_unstemmed | Short-term spider community monitoring after cattle removal in grazed grassland |
| title_short | Short-term spider community monitoring after cattle removal in grazed grassland |
| title_sort | short term spider community monitoring after cattle removal in grazed grassland |
| topic | Neotropical Pampa diversidade Araneae |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100233&lng=en&tlng=en |
| work_keys_str_mv | AT guilhermeodasilva shorttermspidercommunitymonitoringaftercattleremovalingrazedgrassland AT ricardoott shorttermspidercommunitymonitoringaftercattleremovalingrazedgrassland |