scholarly journals Post-fire dynamics of woody vegetation in seasonally flooded forests (impucas) in the Cerrado-Amazonian Forest transition zone

Flora ◽  
2014 ◽  
Vol 209 (5-6) ◽  
pp. 260-270 ◽  
Author(s):  
Leandro Maracahipes ◽  
Beatriz Schwantes Marimon ◽  
Eddie Lenza ◽  
Ben Hur Marimon-Junior ◽  
Edmar Almeida de Oliveira ◽  
...  
Keyword(s):  
Transition Zone ◽  
Woody Vegetation ◽  
Forest Transition ◽  
Fire Dynamics ◽  
Amazonian Forest ◽  
Flooded Forests ◽  
Seasonally Flooded

scholarly journals Post-fire dynamics of the woody vegetation of a savanna forest (Cerradão) in the Cerrado-Amazon transition zone

2015 ◽  
Vol 29 (3) ◽  
pp. 408-416 ◽  
Author(s):  
Simone Matias Reis ◽  
Eddie Lenza ◽  
Beatriz Schwantes Marimon ◽  
Letícia Gomes ◽  
Mônica Forsthofer ◽  
...  
Keyword(s):  
Transition Zone ◽  
Woody Vegetation ◽  
Fire Dynamics

VEGETATION SUCCESSION IN THE CERRADO–AMAZONIAN FOREST TRANSITION ZONE OF MATO GROSSO STATE, BRAZIL

2015 ◽  
Vol 73 (1) ◽  
pp. 83-93 ◽  
Author(s):  
P. S. Morandi ◽  
B. H. Marimon-Junior ◽  
E. A. de Oliveira ◽  
S. M. Reis ◽  
M. B. Xavier Valadão ◽  
...  
Keyword(s):  
Transition Zone ◽  
Transition Process ◽  
Sensu Stricto ◽  
Pioneer Species ◽  
Forest Transition ◽  
Important Species ◽  
Mato Grosso ◽  
Amazonian Forest ◽  
Tree Data ◽  
Soil Level

The occurrence of cerrado (as tree and shrub savanna is called in Brazil) and forest formations side by side is common at the southern margin of the Brazilian Amazonian Forest, and previous studies have demonstrated the advance of forests over cerrado areas. The aim of the present study is to provide an accurate documentation of the transition process between the two major biomes. Tree data (≥ 5 cm diameter at 0.3 m above soil level) from three plots of cerrado sensu stricto lying near three of cerradão (the taller, denser form of cerrado) were inventoried starting in 2002 in an area of 1.5 ha made up of 150 subplots of 10 × 10 m (50 in each area). This showed that the most important species of the cerradão were invading areas previously occupied by smaller, lower forms of cerrado (although it is sometimes difficult to define which are ‘forest’ and which ‘cerrado’ species as many are flexible in size – for instance Emmotum nitens can often be intermediate, establishing in cerrado that develops into cerradão and on to forest). Some typical species such as Eriotheca gracilipes and Emmotum nitens, established since the first inventories, have increased their populations (between 27 and 210%). Tachigali vulgaris, a typical, weedy, adventive species of the Cerrado–Amazonian Forest transition, showed the largest increase in abundance in areas of cerrado sensu stricto (between 100 and 1200%), and is probably the most important pioneer species in the initial advance of the forest into cerrado at the Southern Amazonian border.

A new species of Miroculis Edmunds, 1963 (Ephemeroptera: Leptophlebiidae) from Cerrado-Amazonian forest transition zone, Brazil

Zootaxa ◽  
2017 ◽  
Vol 4299 (2) ◽  
pp. 271 ◽  
Author(s):  
ERIKCSEN A. RAIMUNDI ◽  
HELENA R. S. CABETTE ◽  
LEANDRO S. BRASIL ◽  
FREDERICO F. SALLES
Keyword(s):  
New Species ◽  
Transition Zone ◽  
Developmental Stages ◽  
Forest Transition ◽  
Male And Female ◽  
Amazonian Forest ◽  
Transitional Area ◽  
A New Species

A new species of Miroculis is described based on all developmental stages (nymph, and male and female imagos). Miroculis yulieae sp. nov. is recorded from the transitional area of Cerrado-Amazonia, Brazil.

scholarly journals Structural, physiognomic and aboveground biomass variation in savanna-forest transition zones on three continents. How different are co-occurring savanna and forest formations?

2014 ◽  
Vol 11 (3) ◽  
pp. 4591-4636 ◽  
Author(s):  
E. M. Veenendaal ◽  
M. Torello-Raventos ◽  
T. R. Feldpausch ◽  
T. F. Domingues ◽  
F. Gerard ◽  
...  
Keyword(s):  
South America ◽  
Woody Plant ◽  
Canopy Cover ◽  
Woody Vegetation ◽  
Canopy Closure ◽  
Forest Transition ◽  
Vegetation Types ◽  
Forest Species ◽  
Stable States ◽  
Transition Zones

Abstract. Through interpretations of remote sensing data and/or theoretical propositions, the idea that forest and savanna represent "alternative stable states" is gaining increasing acceptance. Filling an observational gap, we present detailed stratified floristic and structural analyses for forest and savanna stands mostly located within zones of transition (where both vegetation types occur in close proximity) in Africa, South America and Australia. Woody plant leaf area index variation was related in a similar way to tree canopy cover for both savanna and forest with substantial overlap between the two vegetation types. As total woody plant canopy cover increased, so did the contribution of middle and lower strata of woody vegetation to this total. Herbaceous layer cover also declined as woody cover increased. This pattern of understorey grasses and herbs being progressively replaced by shrubs as canopy closure occurs was found for both savanna and forests and on all continents. Thus, once subordinate woody canopy layers are taken into account, a less marked transition in woody plant cover across the savanna-forest species discontinuum is observed compared to that implied when trees of a basal diameter > 0.1m are considered in isolation. This is especially the case for shrub-dominated savannas and in taller savannas approaching canopy closure. An increased contribution of forest species to the total subordinate cover is also observed as savanna stand canopy closure occurs. Despite similarities in canopy cover characteristics, woody vegetation in Africa and Australia attained greater heights and stored a greater concentration of above ground biomass than in South America. Up to three times as much aboveground biomass is stored in forests compared to savannas under equivalent climatic conditions. Savanna/forest transition zones were also found to typically occur at higher precipitation regimes for South America than for Africa. Nevertheless, coexistence was found to be confined to a well-defined edaphic/climate envelope consistent across all three continents with both soil and climate playing a role as the key determinants of the relative location of forest and savanna. Taken together these observations do not lend support the notion of alternate stable states mediated through fire-feedbacks as the prime force shaping the distribution of the two dominant vegetation types of the tropical lands.

scholarly journals Soils in seasonally flooded forests as methane sources: A case study of West Siberian South taiga

2018 ◽  
Vol 138 ◽  
pp. 012012
Author(s):  
S Yu Mochenov ◽  
A I Churkina ◽  
S F Sabrekov ◽  
M V Glagolev ◽  
D V Il’yasov ◽  
...  
Keyword(s):  
Flooded Forests ◽  
Seasonally Flooded

scholarly journals The Piedra Chamana fossil woods (Eocene, Peru), II

IAWA Journal ◽  
2019 ◽  
Vol 40 (3) ◽  
pp. 551-595 ◽  
Author(s):  
D.W. Woodcock ◽  
H.W. Meyer ◽  
Y. Prado
Keyword(s):  
Tropical Forest ◽  
Middle Eocene ◽  
Dry Forest ◽  
South American ◽  
Lowland Tropical Forest ◽  
Or Groups ◽  
Freshwater Swamp ◽  
Flooded Forests ◽  
Fossil Forest ◽  
Seasonally Flooded

ABSTRACTThis contribution presents descriptions of 14 fossil woods from the Piedra Chamana Fossil Forest in Peru, an assemblage of fossil woods and leaves dated at 39 Ma (late Middle Eocene). It is part two of the descriptions of the non-monocot angiosperm fossils from the site (see Woodcock et al. 2017). The woods are assigned to the subfamilies Bombacoideae, Bombacoideae/Malvoideae, Byttneroideae, Grewioideae, and Sterculioideae of Malvaceae and the families Melastomataceae, Muntingiaceae, Rubiaceae, Rutaceae, and Sapindaceae. Malvalean taxa make up around one-third of the wood types. Many of the woods are identifiable to modern-day genera or groups, including genera with species counted among the hyperdominant trees of the New World forests. Represented vegetation types include mixed freshwater swamp with Avicennia, seasonally flooded forest, and lowland tropical forest with a dry aspect. The assemblage shows floristic similarities to extant South American lowland tropical forest, particularly the seasonally flooded forests growing along white water rivers (várzea); however, the dry forest association has a less clear analog in the present-day tropics.

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