Author(s): Aquino, Karina Kethelen Silva de
Date: 2020
Origin: Oasisbr
Subject(s): Hem??ptera; Artr??pode; Florestas - Reprodu????o; Insetos florestais; D??ptero; CI??NCIAS BIOL??GICAS: ZOOLOGIA; Amaz??nia Central; Coleoptera; Hemiptera; Diptera; Florestas secund??rias; Fragmentos florestais
Submitted by karina aquino (karinakethelen@gmail.com) on 2020-09-29T17:17:09Z No. of bitstreams: 3 Ata defesa Mestrado Karina Aquino.pdf: 655105 bytes, checksum: df131193d0aff6c8c3d2b01d7f0983d7 (MD5) carta de encaminhamento - Disserta????o - karina kethelen.pdf: 36174 bytes, checksum: f5b94793710e65d9c2f2dc728405c3da (MD5) Diss_ Biblioteca_Karina Kethelen.pdf: 1416118 bytes, checksum: b43cdb0c661d0b3aabc147fc080ed4b2 (MD5)
Approved for entry into archive by PPGZOOL Zoologia (ppgzoo.ufam@gmail.com) on 2020-09-29T19:30:53Z (GMT) No. of bitstreams: 3 Ata defesa Mestrado Karina Aquino.pdf: 655105 bytes, checksum: df131193d0aff6c8c3d2b01d7f0983d7 (MD5) carta de encaminhamento - Disserta????o - karina kethelen.pdf: 36174 bytes, checksum: f5b94793710e65d9c2f2dc728405c3da (MD5) Diss_ Biblioteca_Karina Kethelen.pdf: 1416118 bytes, checksum: b43cdb0c661d0b3aabc147fc080ed4b2 (MD5)
Approved for entry into archive by Divis??o de Documenta????o/BC Biblioteca Central (ddbc@ufam.edu.br) on 2020-09-30T15:31:51Z (GMT) No. of bitstreams: 3 Ata defesa Mestrado Karina Aquino.pdf: 655105 bytes, checksum: df131193d0aff6c8c3d2b01d7f0983d7 (MD5) carta de encaminhamento - Disserta????o - karina kethelen.pdf: 36174 bytes, checksum: f5b94793710e65d9c2f2dc728405c3da (MD5) Diss_ Biblioteca_Karina Kethelen.pdf: 1416118 bytes, checksum: b43cdb0c661d0b3aabc147fc080ed4b2 (MD5)
Made available in DSpace on 2020-09-30T15:31:51Z (GMT). No. of bitstreams: 3 Ata defesa Mestrado Karina Aquino.pdf: 655105 bytes, checksum: df131193d0aff6c8c3d2b01d7f0983d7 (MD5) carta de encaminhamento - Disserta????o - karina kethelen.pdf: 36174 bytes, checksum: f5b94793710e65d9c2f2dc728405c3da (MD5) Diss_ Biblioteca_Karina Kethelen.pdf: 1416118 bytes, checksum: b43cdb0c661d0b3aabc147fc080ed4b2 (MD5) Previous issue date: 2020-05-14
FAPEAM - Funda????o de Amparo ?? Pesquisa do Estado do Amazonas
Fragmentation and habitat loss cause increase or decrease of species diversity and abundance. The impacts of such disturbances, however, could be diminished through the regeneration of vegetation after secondary succession. In this study, we evaluate the effects of fragmentation and forest regeneration on the diversity, abundance and taxonomic composition of arthropods in a human-modified landscape in the Central Amazon. The study was carried out in Biological Dynamics of Forest Fragments Project. The process of isolation of fragments and creation of pasture areas occurred in 1980, and the re-isolation of some fragments carried out in the years 1994 and 2000. Collections were carried out during the period from July to December 2018. Arthropods were sampling with Malaise traps distributed in 10-hectares forest fragments, secondary forests and primary continuous forests. We adopted an approach to identify the arthropods in multiple taxonomic resolution including orders (all individual collected), families (only Diptera order) and species (only from Tabanidae family). We collect 25,230 individual from 17 orders, 30 families of Diptera and 31 species from Tabanidae. Coleoptera and Hemiptera were more abundant in secondary forests compared to other habitats. Among the Diptera, only Clusiidae was identified as the indicator of forest fragments. In addition, the Tabanidae species Dichelacera cervicornis was identified as indicator of primary forests. No significant differences were detected in taxonomic composition of arthropods between the three habitats and these results were consistent in all taxonomic resolution adopted. Our results indicate that, although strong environment disturbance affects the studied landscape, the vegetation recovering along the time favoring the arthropods dispersal among habitats. As consequence we detected only subtle differences in the abundance and taxonomic composition of arthropods among the forest fragments, secondary and primary forests.
Fragmenta????o e a perda de h??bitats podem levar ao aumento ou diminui????o da diversidade de esp??cies e abund??ncia. Por outro lado, os impactos destes dist??rbios podem ser amenizados atrav??s da regenera????o da vegeta????o atrav??s da sucess??o secund??ria. Neste estudo, avaliamos o efeito da fragmenta????o e da regenera????o florestal sobre a diversidade, abund??ncia e composi????o taxon??mica de artr??podes em uma paisagem modificada por a????es humanas na Amaz??nia Central. O estudo foi realizado na regi??o do Projeto Din??mica Biol??gica de Fragmentos Florestais, no qual, o processo de isolamento dos fragmentos e cria????o das ??reas de pastagem ocorreu em 1980, e o re-isolamento de alguns fragmentos realizado nos anos de 1994 e 2000. As coletas foram realizadas durante o per??odo de julho a dezembro de 2018. Para as amostragens dos artr??podes utilizamos armadilhas do tipo Malaise distribu??das em ambientes de fragmentos florestais de 10 hectares, florestas prim??rias cont??nuas e florestas secund??rias. Adotamos uma abordagem de identifica????o dos artr??podes em m??ltiplas resolu????es taxon??micas incluindo ordens (todos os indiv??duos), fam??lias (somente da Ordem Diptera) e esp??cies (somente da Fam??lia Tabanidae). Coletamos um total de 25.230 indiv??duos correspondentes a 17 Ordens, 30 fam??lias de Diptera e 31 esp??cies de d??pteros da fam??lia Tabanidae. Coleoptera e Hemiptera foram mais abundantes nas florestas secund??rias comparadas com os outros ambientes estudados. Entre as fam??lias de Diptera, somente Clusiidae foi identificada como indicadora de fragmento florestal. A esp??cie de mutuca Dichelacera cervicornis foi identificada como indicadora de florestas prim??rias. N??o foram detectadas diferen??as significativas na composi????o taxon??mica de artr??podes entre os tr??s ambientes e este resultado foi consistente entre as resolu????es taxon??micas adotadas. Nossos resultados sugerem que, apesar de fortes dist??rbios ambientais terem afetado as paisagens de estudo, a vegeta????o se regenerou ao longo do tempo favorecendo a dispers??o de artr??podes entre os ambientes. Como consequ??ncia foi observada somente diferen??as sutis na composi????o taxon??mica e abund??ncia entre fragmentos florestais, florestas secund??rias e prim??rias.
