Effects of marginal vegetation removal on Odonata communities
AIM: Here we assess the effects of habitat degradation on individuals of the two suborders of Odonata community of Borecaia river sub-basin. More specifically, we tested the hypothesis that Anisoptera richness would be positively affected by removal of vegetation; on the other hand, Zygoptera richne...
| Autor principal: | CARVALHO, Fernando Geraldo de |
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| Outros Autores: | PINTO, Nelson Silva, OLIVEIRA JUNIOR, José Max Barbosa de, JUEN, Leandro |
| Grau: | Artigo |
| Idioma: | eng |
| Publicado em: |
Associação Brasileira de Limnologia
2015
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.ufpa.br/jspui/handle/2011/6487 |
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ir-2011-6487 |
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ir-2011-64872020-02-01T05:31:21Z Effects of marginal vegetation removal on Odonata communities Efeitos da retirada da vegetação marginal sobre a comunidade de Odonata CARVALHO, Fernando Geraldo de PINTO, Nelson Silva OLIVEIRA JUNIOR, José Max Barbosa de JUEN, Leandro Plantas Anisoptera Zygoptera Integridade ambiental Riqueza de espécies Odonata Environmental integrity Species richness Environmental changes AIM: Here we assess the effects of habitat degradation on individuals of the two suborders of Odonata community of Borecaia river sub-basin. More specifically, we tested the hypothesis that Anisoptera richness would be positively affected by removal of vegetation; on the other hand, Zygoptera richness would be adversely affected by virtue of their ecophysiological requirements; METHODS: We selected 10 streams of similar orders, six preserved and four degraded. Streams characterized as preserved had values of Index of Habitat Integrity (HII) above 0.70 (0.77 ± 0.07, mean ± SD) and continuous forest on both sides with a minimum width of 70 meters. Each site was sampled three times on different days. The effect of vegetation removal on richness was assessed using richness estimated by first order Jackknife; RESULTS: Decreased physical integrity (measured with IIH) of streams had no significant effect on the estimated richness to Odonata in general. However, the estimated richness of Anisoptera showed an inverse relationship with the integrity (r2 = 0.485, P = 0.025), i.e., there was a reduction in their species richness with increasing integrity; DISCUSSION: As a general pattern, Anisoptera presents higher richness in an altered site; on the other hand, Zygoptera presents higher richness in a preserved one. This pattern suggests that Odonata needs to be considered at the sub-order level to access the effects of habitat degradation on these insects. Because of its restrictions ecophysiological Odonata varied widely in their composition and species richness between the two types of environments, it reinforces the potential of the order of studies and environmental monitoring also shows that Zygoptera be more affected by changes in habitat. However, further studies including more samples and different streams are need to confirm this pattern, being an interesting line of research for future works. CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior OBJETIVOS: Com o intuito de avaliar os efeitos de mudanças na integridade ambiental sobre os indivíduos da comunidade de Odonata da sub-bacia do rio Borecaia, testamos a hipótese de que a riqueza de Anisoptera seria afetada positivamente pela remoção da vegetação; por outro lado, a riqueza Zygoptera seria prejudicada em virtude de suas necessidades ecofisiológicas; MÉTODOS: Selecionamos 10 riachos de ordens similares, seis classificados como preservados e quatro como alterados. Riachos classificados como preservados apresentaram valores do Índice valores de Integridade Habitat (HII) acima de 0.70 e mata continua nas duas margens com uma largura mínima de 70 metros. Cada ponto foi amostrado três vezes em dias diferentes. O efeito de remoção de vegetação sobre a riqueza foi avaliada utilizando Jackknife de primeira ordem; RESULTADOS: A diminuição da integridade física (mensurada com o IIH) dos córregos não exerceu efeito significativo sobre a riqueza estimada para a Ordem Odonata. Porém, a riqueza estimada de Anisoptera apresentou uma relação inversa com a integridade (r2 = 0.485; p = 0.025), mostrando que com o aumento da integridade houve uma redução na sua riqueza de espécies; DISCUSSÃO: Como um padrão geral, Anisoptera apresenta maiores valores de riqueza em locais alterados; por outro lado, Zygoptera apresenta maiores valores em preservados. Devido suas restrições ecofisiologicas Odonata apresentou uma grande variação na sua composição e riqueza de espécie entre os dois tipos de ambientes, isso reforça o potencial da ordem em estudos de monitoramento ambiental e também mostra que Zygoptera será mais afetada pelas transformações de habitat. No entanto, futuros estudos incluindo mais amostras e diferentes córregos são necessários para confirmar este padrão sendo uma linha de pesquisa interessante para trabalhos futuros. JUEN, L. Universidade Federal do Pará 2015-03-25T13:20:03Z 2015-03-25T13:20:03Z 2013-03 Artigo de Periódico CARVALHO, Fernando Geraldo de et al. Effects of marginal vegetation removal on Odonata communities. Acta Limnologica Brasiliensia, Rio Claro, v. 25, n. 1, p. 10-18, Jan./Mar. 2013. DOI: http://dx.doi.org/10.1590/S2179-975X2013005000013. Disponível em: http://repositorio.ufpa.br/jspui/handle/2011/6487. Acesso em:. 2179-975X http://repositorio.ufpa.br/jspui/handle/2011/6487 eng Acta Limnologica Brasiliensia Acesso Aberto application/pdf Associação Brasileira de Limnologia Brasil ABLimno http://ref.scielo.org/mxpmyb |
| institution |
Repositório Institucional - Universidade Federal do Pará |
| collection |
RI-UFPA |
| language |
eng |
| topic |
Plantas Anisoptera Zygoptera Integridade ambiental Riqueza de espécies Odonata Environmental integrity Species richness Environmental changes |
| spellingShingle |
Plantas Anisoptera Zygoptera Integridade ambiental Riqueza de espécies Odonata Environmental integrity Species richness Environmental changes CARVALHO, Fernando Geraldo de Effects of marginal vegetation removal on Odonata communities |
| topic_facet |
Plantas Anisoptera Zygoptera Integridade ambiental Riqueza de espécies Odonata Environmental integrity Species richness Environmental changes |
| description |
AIM: Here we assess the effects of habitat degradation on individuals of the two suborders of Odonata community of Borecaia river sub-basin. More specifically, we tested the hypothesis that Anisoptera richness would be positively affected by removal of vegetation; on the other hand, Zygoptera richness would be adversely affected by virtue of their ecophysiological requirements;
METHODS: We selected 10 streams of similar orders, six preserved and four degraded. Streams characterized as preserved had values of Index of Habitat Integrity (HII) above 0.70 (0.77 ± 0.07, mean ± SD) and continuous forest on both sides with a minimum width of 70 meters. Each site was sampled three times on different days. The effect of vegetation removal on richness was assessed using richness estimated by first order Jackknife;
RESULTS: Decreased physical integrity (measured with IIH) of streams had no significant effect on the estimated richness to Odonata in general. However, the estimated richness of Anisoptera showed an inverse relationship with the integrity (r2 = 0.485, P = 0.025), i.e., there was a reduction in their species richness with increasing integrity;
DISCUSSION: As a general pattern, Anisoptera presents higher richness in an altered site; on the other hand, Zygoptera presents higher richness in a preserved one. This pattern suggests that Odonata needs to be considered at the sub-order level to access the effects of habitat degradation on these insects. Because of its restrictions ecophysiological Odonata varied widely in their composition and species richness between the two types of environments, it reinforces the potential of the order of studies and environmental monitoring also shows that Zygoptera be more affected by changes in habitat. However, further studies including more samples and different streams are need to confirm this pattern, being an interesting line of research for future works. |
| format |
Artigo |
| author |
CARVALHO, Fernando Geraldo de |
| author2 |
PINTO, Nelson Silva OLIVEIRA JUNIOR, José Max Barbosa de JUEN, Leandro |
| author2Str |
PINTO, Nelson Silva OLIVEIRA JUNIOR, José Max Barbosa de JUEN, Leandro |
| title |
Effects of marginal vegetation removal on Odonata communities |
| title_short |
Effects of marginal vegetation removal on Odonata communities |
| title_full |
Effects of marginal vegetation removal on Odonata communities |
| title_fullStr |
Effects of marginal vegetation removal on Odonata communities |
| title_full_unstemmed |
Effects of marginal vegetation removal on Odonata communities |
| title_sort |
effects of marginal vegetation removal on odonata communities |
| publisher |
Associação Brasileira de Limnologia |
| publishDate |
2015 |
| url |
http://repositorio.ufpa.br/jspui/handle/2011/6487 |
| _version_ |
1832604386765832192 |
| score |
11.755432 |