Forest structure and tree species composition of the understory of two central Amazonian várzea forests of contrasting flood heights
We investigated species composition, distribution, and forest structure of understory trees (≥1m height, <10cm diameter at breast height) in two late-successional várzea forests subject to contrasting levels of inundation within the Mamirauá Sustainable Development Reserve, western Brazilian Amazon,...
| Autor principal: | Assis, Rafael Leandro de |
|---|---|
| Outros Autores: | Wittmann, Florian Karl |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Flora: Morphology, Distribution, Functional Ecology of Plants
2020
|
| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/16208 |
| id |
oai:repositorio:1-16208 |
|---|---|
| recordtype |
dspace |
| spelling |
oai:repositorio:1-16208 Forest structure and tree species composition of the understory of two central Amazonian várzea forests of contrasting flood heights Assis, Rafael Leandro de Wittmann, Florian Karl Community Composition Diameter Forest Ecosystem Forest Management Population Distribution Reforestation Regeneration Shrub Spatial Distribution Species Richness Sustainable Development Tolerance Understory Amazonas Brasil We investigated species composition, distribution, and forest structure of understory trees (≥1m height, <10cm diameter at breast height) in two late-successional várzea forests subject to contrasting levels of inundation within the Mamirauá Sustainable Development Reserve, western Brazilian Amazon, and compared it with the overstory flora at the same study sites. In total, 1486 individuals and 116 woody species were recorded on an area totaling 3140m2. Individual densities and tree species richness were considerably higher in the high várzea than in the low várzea, which suggests that the heights and durations of the annual inundations are the main factor limiting species regeneration. In addition, approximately one third of the recorded species with densities ≥8 individuals showed regular or random spatial distribution patterns, which suggests that floodwaters act on dispersal strategies and species establishment. Independent of the forest type, floristic similarity between the understory and the overstory amounted to approximately 35%, and to approximately 10% when compared to other understory inventories in Amazonian várzea. Although the inventoried area of the understory amounted to only 16% of that of the overstory, species richness accounted for approximately 52-56% of that of the overstory. The results indicate that the understory flora of várzea forests is distinct and that it significantly increases local tree species richness. The understory flora of várzea forests therefore should be addressed in floristic inventories that provide the basis for regional and/or basin-wide estimations of tree diversity. © 2010 Elsevier GmbH. 2020-05-31T18:05:42Z 2020-05-31T18:05:42Z 2011 Artigo https://repositorio.inpa.gov.br/handle/1/16208 10.1016/j.flora.2010.11.002 en Volume 206, Número 3, Pags. 251-260 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Flora: Morphology, Distribution, Functional Ecology of Plants |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Community Composition Diameter Forest Ecosystem Forest Management Population Distribution Reforestation Regeneration Shrub Spatial Distribution Species Richness Sustainable Development Tolerance Understory Amazonas Brasil |
| spellingShingle |
Community Composition Diameter Forest Ecosystem Forest Management Population Distribution Reforestation Regeneration Shrub Spatial Distribution Species Richness Sustainable Development Tolerance Understory Amazonas Brasil Assis, Rafael Leandro de Forest structure and tree species composition of the understory of two central Amazonian várzea forests of contrasting flood heights |
| topic_facet |
Community Composition Diameter Forest Ecosystem Forest Management Population Distribution Reforestation Regeneration Shrub Spatial Distribution Species Richness Sustainable Development Tolerance Understory Amazonas Brasil |
| description |
We investigated species composition, distribution, and forest structure of understory trees (≥1m height, <10cm diameter at breast height) in two late-successional várzea forests subject to contrasting levels of inundation within the Mamirauá Sustainable Development Reserve, western Brazilian Amazon, and compared it with the overstory flora at the same study sites. In total, 1486 individuals and 116 woody species were recorded on an area totaling 3140m2. Individual densities and tree species richness were considerably higher in the high várzea than in the low várzea, which suggests that the heights and durations of the annual inundations are the main factor limiting species regeneration. In addition, approximately one third of the recorded species with densities ≥8 individuals showed regular or random spatial distribution patterns, which suggests that floodwaters act on dispersal strategies and species establishment. Independent of the forest type, floristic similarity between the understory and the overstory amounted to approximately 35%, and to approximately 10% when compared to other understory inventories in Amazonian várzea. Although the inventoried area of the understory amounted to only 16% of that of the overstory, species richness accounted for approximately 52-56% of that of the overstory. The results indicate that the understory flora of várzea forests is distinct and that it significantly increases local tree species richness. The understory flora of várzea forests therefore should be addressed in floristic inventories that provide the basis for regional and/or basin-wide estimations of tree diversity. © 2010 Elsevier GmbH. |
| format |
Artigo |
| author |
Assis, Rafael Leandro de |
| author2 |
Wittmann, Florian Karl |
| author2Str |
Wittmann, Florian Karl |
| title |
Forest structure and tree species composition of the understory of two central Amazonian várzea forests of contrasting flood heights |
| title_short |
Forest structure and tree species composition of the understory of two central Amazonian várzea forests of contrasting flood heights |
| title_full |
Forest structure and tree species composition of the understory of two central Amazonian várzea forests of contrasting flood heights |
| title_fullStr |
Forest structure and tree species composition of the understory of two central Amazonian várzea forests of contrasting flood heights |
| title_full_unstemmed |
Forest structure and tree species composition of the understory of two central Amazonian várzea forests of contrasting flood heights |
| title_sort |
forest structure and tree species composition of the understory of two central amazonian várzea forests of contrasting flood heights |
| publisher |
Flora: Morphology, Distribution, Functional Ecology of Plants |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/16208 |
| _version_ |
1787145419276419072 |
| score |
11.755432 |