Temporal variability in evapotranspiration and energy partitioning over a seasonally flooded scrub forest of the Brazilian Pantanal

In the Pantanal, the largest continuous floodplain in the world, the diversity and distribution of anuran amphibians vary in and across distinct subregions and distinct habitats occurring along inundation gradients. Permanent and natural aquatic habitats are relatively scarce in the Pantanal, and occurrence of temporary aquatic habitats varies seasonally, depending on rains. We here present results of evaluations of anuran's species richness and abundance in a seasonally flooded area in the northwestern section of the Pantanal (Fazenda Baía de Pedra, Cáceres municipality, state of Mato Grosso, Brazil), comparing values obtained in 10 plots systematically distributed over 5 km² with those obtained in additional aquatic plots in the study area. Data were obtained in five field trips, from February 2008 to March 2009. In addition to the plots, 36 water bodies (20 permanent and 16 temporary) were also sampled for the presence of anurans. In total, 3,983 individuals from 34 anuran species distributed in five families were recorded: Hylidae (14 species), Leptodactylidae (8), Leiuperidae (6), Microhylidae (4), and Bufonidae (2). Local richness represents 77.3% of the anuran diversity already recorded for the Brazilian Pantanal. The number of species recorded exclusively in systematically distributed terrestrial plots and in water bodies was 28 and 32, respectively. Sampling methods used at Fazenda Baía da Pedra were efficient in determining anuran richness, abundance, composition and distribution. Evaluations of anuran richness and abundance by using permanent sampling plots in the Pantanal may benefit from additional sampling sites, particularly permanent and temporary water bodies.

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Geographic range extension of Elachistocleis corumbaensis Piva, Caramaschi & Albuquerque, 2017 (Anura, Microhylidae) with new records in ecotonal zones in the state of Mato Grosso, Brazil

Check List ◽

10.15560/15.1.17 ◽

2019 ◽

Vol 15 (1) ◽

pp. 17-20

Author(s):

Vancleber Divino Silva-Alves ◽

Rosana dos Santos D'Avila ◽

Thatiane Martins da Costa ◽

Ana Paula Dalbem Barbosa ◽

Bruno Ramos Brum ◽

...

Keyword(s):

Protected Area ◽

New Records ◽

Geographic Range ◽

The State ◽

Riparian Forests ◽

Mato Grosso ◽

Paraguay River ◽

Flooded Forests ◽

Seasonally Flooded ◽

Brazilian Pantanal

Elachistocleis corumbaensis was documented in 2017 in the central region of the Brazilian Pantanal and no other record of the species has since been reported. In this study, we report on the extension of the geographic range of E. corumbaensis based on 4 new records found in the riparian forests of the Paraguay River, in the state of Mato Grosso. Of these, 1 specimen was collected in a protected area in the Pantanal. We also report on the presence of this species in the ecotones between the Pantanal, Cerrado, and Amazonia, which suggests that E. corumbaensis is associated with seasonally flooded forests but more widely distributed in western Brazil than previously reported.

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Variation in the helminth community structure ofThrichomys pachyurus(Rodentia: Echimyidae) in two sub-regions of the Brazilian Pantanal: the effects of land use and seasonality

Journal of Helminthology ◽

10.1017/s0022149x09990629 ◽

2009 ◽

Vol 84 (3) ◽

pp. 266-275 ◽

Cited By ~ 16

Author(s):

R. Simões ◽

R. Gentile ◽

V. Rademaker ◽

P. D'Andrea ◽

H. Herrera ◽

...

Keyword(s):

Land Use ◽

Community Structure ◽

Helminth Species ◽

Population Increase ◽

Helminth Community ◽

Wet Season ◽

In The Wild ◽

Highly Correlated ◽

Seasonally Flooded ◽

Brazilian Pantanal

AbstractThe Pantanal is a large ecosystem located in South America. This preserved area is seasonally flooded due to abundant rainfall during the summer and the subsequent overflow of the Paraguai River. In this paper, we examine the helminth community structure in the wild rodentThrichomys pachyurusduring the wet and dry seasons in two locations of the preserved and cattle ranching areas in the Southern Pantanal. We identified 12 species of helminth, and, although we did not find any differences in species richness between locations within the Pantanal, we found that richness was higher during the wet season. Helminth species were largely aggregated in both farm locations and during seasons. The most common helminth species were more abundant during the dry season than during the wet season, which may have been due to the increased habitat availability and rodent population increase. The intensity of the infection also followed the same pattern for most helminths. The trichostrongylids (Heligmostrongylus crucifer,H. almeidaiandPudica cercomysi) were dominant at both farm locations. The land use of each area was not correlated with helminth diversity. However, species composition of the helminth community ofT. pachyurusdiffered between locations and may be correlated with environmental differences between the habitats. The seasonality of the Pantanal was highly correlated with helminth parasitism inT. pachyurus.

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Vertical and time distribution of Pseudoscorpiones (Arthropoda: Arachnida) in a floodplain forest in the Brazilian Pantanal

Revista de Biología Tropical ◽

10.15517/rbt.v65i2.24134 ◽

2017 ◽

Vol 65 (2) ◽

Cited By ~ 2

Author(s):

Leandro Dênis Battirola ◽

Germano Henrique Rosado-Neto ◽

Daniel Augusto Batistella ◽

Volker Mahnert ◽

Antonio Domingos Brescovit ◽

...

Keyword(s):

Temporal Distribution ◽

Floodplain Forest ◽

Sampling Techniques ◽

Termite Mounds ◽

Mato Grosso ◽

Tree Canopies ◽

Seasonally Flooded ◽

Brazilian Pantanal ◽

Number Of Individuals ◽

The Relationship

Pseudoscorpions embrace a diverse group of arachnids with approximately 3 500 species that occur in various habitats, such as soil, leaf litter, caves and canopies. This study aimed at evaluating the relationship between the pseudoscorpion assemblages in soil, termite nests, tree trunks and canopies, as well as the temporal distribution as to the abundance and richness of species in these habitats. For this purpose different sampling techniques were applied in an integrated manner in distinct habitats of a seasonally flooded monodominant forest in the Northern Pantanal of Mato Grosso, Brazil. Data regarding the abundance and richness of assemblage species were organized by means of the Non-Metric Multidimensional Scaling (NMDS). A total of 2 068 Pseudoscorpiones distributed in seven families and 18 species were captured. Chernetidae (8 spp.) and Withiidae (5 spp.) predominated, while Atemnidae, Cheiridiidae, Geogarypidae, Lechytiidae and Olpiidae were present with only one species each. Terrestrial fauna was more abundant (1 035 ind.; 50.0 % of the total catch) with three families and 10 species. In the arboreal fauna (712 ind.; 34.4 %), four families and 13 species were found. Termite mounds (321 ind.; 15.6 %) corresponded to the habitat with the least number of individuals, however, five families and nine species were identified, including Parachernes sp. 2, Geogarypus sp. and Olpiolum sp., not found in other analyzed habitats in this forest. The analyses did not show any temporal variation as to abundance or richness of Pseudoscorpiones in each evaluated habitat; however, the analysis showed that the edaphic environment (soil + termite nests), tree trunks and tree canopies are distinct habitats in relation to the composition of the assemblage. The occurrence of typical terricolous (e.g. Parawithius sp., Withiidae gen. sp. and Parachernes sp.) and other arboricolous (e.g. Cheiridium sp., Americhernes sp. and Lustrochernes sp.) species highlights the vertical stratification of the assemblage present in this floodplain forest in the Pantanal of Mato Grosso.

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Soil N, P, and C dynamics of upland and seasonally flooded forests of the Brazilian Pantanal

Global Ecology and Conservation ◽

10.1016/j.gecco.2017.11.004 ◽

2017 ◽

Vol 12 ◽

pp. 227-240 ◽

Cited By ~ 5

Author(s):

George L. Vourlitis ◽

Cloe S. Hentz ◽

Osvaldo Borges Pinto ◽

Edna Carneiro ◽

Jose de Souza Nogueira

Keyword(s):

Soil N ◽

C Dynamics ◽

Flooded Forests ◽

Seasonally Flooded ◽

Brazilian Pantanal

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The role of ecological opportunity in shaping host–parasite networks

Parasitology ◽

10.1017/s003118202000133x ◽

2020 ◽

Vol 147 (13) ◽

pp. 1452-1460

Author(s):

Elvira D'Bastiani ◽

Karla M. Campião ◽

Walter A. Boeger ◽

Sabrina B. L. Araújo

Keyword(s):

Body Size ◽

Theoretical Models ◽

Interaction Networks ◽

Ecological Opportunity ◽

Host Body ◽

Seasonally Flooded ◽

Brazilian Pantanal ◽

Host Parasite ◽

Host Body Size

AbstractDespite the great interest to quantify the structure of host–parasite interaction networks, the real influence of some factors such as taxonomy, host body size and ecological opportunity remains poorly understood. In this paper, we investigate the general patterns of organization and structure of interactions in two anuran–parasite networks in the Brazilian Pantanal (seasonally flooded environment) and Atlantic Forest (non-flooded forest). We present theoretical models to test whether the structures of these host–parasite interaction networks are influenced by neutrality, host taxonomy and host body size. Subsequently, we calculated metrics of connectance, nestedness and modularity to characterize the network structure. We demonstrated the structure networks were influenced mainly by body size and taxonomy of the host. Moreover, our results showed that the seasonally flooded environment present networks with higher connectance/nestedness and lower modularity compared to the other environment. The results also suggest that seasonal floods may promote ecological opportunities for new species associations.

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Extensive aquatic subsidies lead to territorial breakdown and high density of an apex predator

10.1101/2021.03.29.437596 ◽

2021 ◽

Author(s):

Charlotte E Eriksson ◽

Daniel L.Z Kantek ◽

Selma S Miyazaki ◽

Ronaldo G Morato ◽

Manoel dos Santos-Filho ◽

...

Keyword(s):

Population Density ◽

Social Interactions ◽

Aquatic Ecosystems ◽

Camera Traps ◽

Apex Predator ◽

Gps Collars ◽

Seasonally Flooded ◽

Population Density Estimate ◽

Brazilian Pantanal ◽

Solitary Behavior

Energetic subsidies between terrestrial and aquatic ecosystems can strongly influence food webs and population dynamics. Our objective was to study how aquatic subsidies affected jaguar (Panthera onca) diet, sociality, and population density in a seasonally flooded protected area in the Brazilian Pantanal. The diet (n = 138 scats) was dominated by fish (46%) and aquatic reptiles (55%), representing the first jaguar population known to feed extensively on fish and to minimally consume mammals (11%). These aquatic subsidies supported the highest jaguar population density estimate to date (12.4 per 100 km2) derived from camera traps (8,065 trap nights) and GPS collars (n = 13). Contrary to their mostly solitary behavior elsewhere, we documented social interactions previously unobserved between same-sex adults including cooperative fishing, co-traveling, and play. Our research demonstrates that aquatic subsidies seen in omnivores can be highly influential to obligate carnivores leading to high population density and altered social structure.

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Seasonal growth of "algodão-bravo" (Ipomoea carnea spp. fistulosa)

Pesquisa Agropecuária Brasileira ◽

10.1590/s0100-204x1999000200002 ◽

1999 ◽

Vol 34 (2) ◽

pp. 159-163 ◽

Cited By ~ 6

Author(s):

Rainer Haase

Keyword(s):

Rainy Season ◽

Dry Season ◽

Control Measures ◽

Seasonal Growth ◽

Leaf Production ◽

Woody Perennial ◽

Seasonal Flooding ◽

Ipomoea Carnea ◽

Seasonally Flooded ◽

Brazilian Pantanal

Ipomoea carnea spp. fistulosa, a native woody perennial, is capable of spreading rapidly over seasonally flooded grassland in the Brazilian Pantanal, South America's largest wetland, thus conflicting with the local cattle ranching. I. carnea is controlled by mowing at the onset of the rainy season, as close as possible before the seasonal flooding. Often, however, flooding begins after the plant has had enough time to re-sprout enabling it to survive. The objective of this study was to verify if Ipomoea carnea plant's production follows a seasonal cycle, and, if so, at which point in this cycle, the plant is most vulnerable to mechanical control measures. Seasonal dynamics of stem and leaf production of I. carnea were studied. The results showed that growth of I. carnea is fastest at the onset of the rainy season in November/December. Production declines when seasonal flooding commences in January/February and almost ceases towards the begin of the dry season in May/June. This leads to the proposal that I. carnea could be controlled more effectively if the weed were mown in the early dry season when its production and its capability to re-sprout is lowest, and if any new sprouts were cut by hand when the seasonal flooding starts.

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