Tesis
Efeito da inundação sobre a estrutura da comunidade terrestre de Coleoptera (Arthropoda, insecta) : estudo comparativo entre áreas inundáveis e não inundáveis no Pantanal de Poconé - Mato Grosso
Fecha
2012-06-27Registro en:
CARNEIRO, Andrea Correia. Efeito da inundação sobre a estrutura da comunidade terrestre de Coleoptera (Arthropoda, insecta): estudo comparativo entre áreas inundáveis e não inundáveis no Pantanal de Poconé - Mato Grosso. 2012. 123 f. Dissertação (Mestrado em Ecologia e Conservação da Biodiversidade) - Universidade Federal de Mato Grosso, Instituto de Biociências, Cuiabá, 2012.
Autor
Marques, Marinêz Isaac
Battirola, Leandro Dênis
http://lattes.cnpq.br/8523225130052169
http://lattes.cnpq.br/0270347863832551
Marques, Marinêz Isaac
208.461.001-00
http://lattes.cnpq.br/0270347863832551
Mello, Fernando Zagury Vaz de
074.858.417-00
http://lattes.cnpq.br/0676101131499422
208.461.001-00
809.307.601-82
Lhano, Marcos Gonçalves
246.519.628-66
http://lattes.cnpq.br/8089627474241345
Institución
Resumen
The Pantanal comprises a mosaic of landscapes strongly influenced by seasonal mono
mode flood pulse, which imposes a spatial and temporal dynamics in the composition of
the arthropod community sites, especially Earth community. To better understand the
functioning of this complex ecosystem is essential to study the effects of these dynamics
on invertebrate communities in different landscape places. Based on this premise this
study aimed to evaluate the effect of flooding on the terrestrial community structure of
Coleoptera, through a comparative study between flooding areas and not flooding areas in
the flat ground of Pantanal in Poconé- MT. Samples were collected during from the
drought /2010 and flood season/2011 of this region into three areas (A1, A2 and A3)
selected in the distance between the rivers Bento Gomes and Cuiabá. In each area were
delimited three points (N = 3) considered replicas, where were demarcated two quadrants
of 10x10m, corresponding to treatments in flooded and not flooded environments, totaling
18 quarters. In these quadrants were distributed nine pitfall traps without bait, and
collected two m2 litter and topsoil to capture Coleoptera with extractor mini-Winkler. The
Coleoptera community was represented by 4260 adult sampled belonging to 36 families,
113 genders and 505 species/morphospecies. The largest number of individuals was
obtained for the families Staphylinidae (848 ind., 19.9%), Nitidulidae (729 ind., 17.1%),
Scarabaeidae (472 ind.; 11.1%), Curculionidae (470 ind ., 11.0%), Corylophidae (407 ind.,
9.6%) and Carabidae (311 ind., 7.3%). The structure of the Earth community ordinate by
non-metric multidimensional scaling (NMDS) showed a tendency of separation between
drought and flood, however, did not indicate a separation between the physiognomies
flooded and not flooded. There was temporal and spatial variation in the structure and
composition of the community, since the period had more drought/2010 families (28
families) and individuals (2,007 ind.) Compared to flood/2011 (20 families, 761 ind.), and
only 16.6% of the species/ morphospecies collected were common to both periods. The
environments do not flood were more abundant (2,007 ind.; 57.4%) than the flood (1,492
ind., 42.6%) and 37.7% of species were common to these two environments. The two
methods created different information about the composition and community structure of
terrestrial Coleoptera therefore among the 505 species collected in this study, only 49.9%
were collected using pitfall traps, and 29.0% using only the extractor mini-Winkler. The
ordering by NMDS showed that the variation of the data structure (abundance) of the
community was separated according to the used methods. Therefore, the two methods
were complementary and contributed to a broader sampling of the community. These
results suggest a change in the structure of the species composition of the community of
Coleoptera influenced both by extreme hydrological variability of sampling periods, as the
areas sampled and conditions of flooded or not flooded environments that represent
formations phytophysiognomical suffering direct and indirect effect of the floods. But it will
need additional studies to evaluate other variables that may influence this distribution in
the Pantanal.