Spatial pattern of a fish assemblage in a seasonal tropical wetland: effects of habitat, herbaceous plant biomass, water depth, and distance from species sources

Fernandes, Izaias Médice; Machado, Francisco B. C.; Penha, Jerry

doi:10.1590/s1679-62252010000200007

Cited by 34 publications

(30 citation statements)

References 47 publications

(43 reference statements)

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“…Hence, the common occurrence of Hypessobrycon, Serrapinnus, Astyanax and Hoplosternum littorale in this study -also verified by Okada et al (2003) in temporary ponds in the dry season of the upper Paraná river (Brazil) -indicates a widespread adaptation and survival of these groups of species in ephemeral habitats subject to environmental stress. Also, the great abundance and widespread occurrence of Hyphessobrycon elachys and Serrapinnus calliurus shows that the stress caused by the drying process does not limit the successful occupation of these species in temporary ponds, as noted by Fernandes et al (2010a) in the same region and by Cunico et al (2002) in the upper Paraná river (Brazil). Moreover, the richness found in a single sampling represented almost 60% (49 species and 1117 individuals) of the richness registered by Fernandes et al (2010a) for the same region during a one-month collection using two methods (throw trap and gill net), thus emphasising the effectiveness of the sampling method for the study of fish fauna in rapid assessment of floodplain biodiversity.…”

Section: Discussionmentioning

confidence: 85%

“…Studies on temporary floodplain environments have verified that depth and hydroperiod are the main influential factors on the structure of the assemblages in these environments (Baber et al, 2002;Pazin et al, 2006;Fernandes et al, 2010a). This indicated that the influence of depth on composition is due not only to morphological and behavioural adaptations of the species, but also to the survival probability related to hydroperiod variation.…”

Section: Discussionmentioning

confidence: 93%

“…From April onwards, water depth decreases, resulting in the loss of spatial connectivity of floodwaters and the formation of permanent/temporary ponds in depressions in the terrain. The temporary ponds of the sampled area are already monitored through projects related to the Long Term Program-PELD (Fantin-Cruz et al, 2008Fernandes et al, 2010aFernandes et al, , 2010b. Ponds are considered temporary when they have a predictable annual dry phase, usually of the order of 3-8 months (Collinson et al, 1995).…”

Section: Study Areamentioning

confidence: 99%

“…Regarding the organisation and structure of fish assemblages in temporary water bodies in floodplains, the influence of hydroperiod (i.e., the duration time of ponds), depth, connection, and distance between water bodies have been recognised (Baber et al, 2002;Pazin et al, 2006;Fernandes et al, 2010a). These factors describe the increasing isolation of water bodies, which in turn increases fish density and reduces migration (Scarabotti et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Still, the temporary water bodies or seasonally flooded plains in this region, especially those near the floodplain of Cuiabá river, have been receiving attention only recently. Some notable examples of research on this subject are the pioneering studies on microcrustaceans (Fantin-Cruz et al, 2008), aquatic invertebrates (Santos and Callil, 2010), fish fauna (Fernandes et al, 2010a(Fernandes et al, , 2010b, and seed banks (Pagotto et al, 2011). Several fish species of temporary environments in this region have great importance since they are major food items for wading birds and so they contribute to maintain aquatic and terrestrial food webs.…”

Section: Introductionmentioning

confidence: 99%

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