Changes in the structure of a savanna forest over a six-year period in the Amazon-Cerrado transition, Mato Grosso state, Brazil
Abstract Vegetation changes in transition zones are still poorly studied. Changes in the vegetation structure of a savanna forest (cerradão) were assessed in the Amazon-Cerrado transition (14º42'2.3"S; 52º21'2.6"W), eastern Mato Grosso, within a period of six years (2002, 2005 an...
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| Format: | Article |
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Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
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| Series: | Rodriguésia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602011000200425&lng=en&tlng=en |
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| author | Daniel David Franczak Beatriz Schwantes Marimon Ben Hur Marimon-Junior Henrique Augusto Mews Leandro Maracahipes Edmar Almeida de Oliveira |
| author_facet | Daniel David Franczak Beatriz Schwantes Marimon Ben Hur Marimon-Junior Henrique Augusto Mews Leandro Maracahipes Edmar Almeida de Oliveira |
| author_sort | Daniel David Franczak |
| collection | DOAJ |
| description | Abstract Vegetation changes in transition zones are still poorly studied. Changes in the vegetation structure of a savanna forest (cerradão) were assessed in the Amazon-Cerrado transition (14º42'2.3"S; 52º21'2.6"W), eastern Mato Grosso, within a period of six years (2002, 2005 and 2008). In 2002, fifty plots of 10 × 10 m were set up, where all trees with DSH30 ≥ 5 cm were measured; in 2005 and 2008 the plots were re-inventoried. In 2008, 84 species from 70 genera and 37 families were sampled; absolute density was 1,998 individuals/ha and basal area was 25.95 m2.ha-1. On the one hand, the absolute density of live individuals decreased from 2005 to 2008 (2,066 individuals/ha); on the other hand, the basal area increased in 2008 compared to 2005 (23.56 m2.ha-1) and 2002 (1,884 individuals/ha and 21.38 m2.ha-1). The species with the highest importance value in the period were Hirtella glandulosa, Tachigali vulgaris and Xylopia aromatica. Except for these three species, all other species underwent hierarchic changes in the importance value, indicating that most species frequently alternate. Community structure exhibited changes throughout the period; hence, we suggest investigations on the role of T. vulgaris in these changes, since environmental conditions caused by gap opening from the fall of senile individuals of this pioneer species with a short life cycle may contribute to community dynamics. |
| first_indexed | 2024-04-11T22:44:09Z |
| format | Article |
| id | doaj.art-274487ba59cf401d95a1f75716268915 |
| institution | Directory Open Access Journal |
| issn | 2175-7860 |
| language | English |
| last_indexed | 2024-04-11T22:44:09Z |
| publisher | Instituto de Pesquisas Jardim Botânico do Rio de Janeiro |
| record_format | Article |
| series | Rodriguésia |
| spelling | doaj.art-274487ba59cf401d95a1f757162689152022-12-22T03:58:51ZengInstituto de Pesquisas Jardim Botânico do Rio de JaneiroRodriguésia2175-786062242543610.1590/2175-7860201162215S2175-78602011000200425Changes in the structure of a savanna forest over a six-year period in the Amazon-Cerrado transition, Mato Grosso state, BrazilDaniel David FranczakBeatriz Schwantes MarimonBen Hur Marimon-JuniorHenrique Augusto MewsLeandro MaracahipesEdmar Almeida de OliveiraAbstract Vegetation changes in transition zones are still poorly studied. Changes in the vegetation structure of a savanna forest (cerradão) were assessed in the Amazon-Cerrado transition (14º42'2.3"S; 52º21'2.6"W), eastern Mato Grosso, within a period of six years (2002, 2005 and 2008). In 2002, fifty plots of 10 × 10 m were set up, where all trees with DSH30 ≥ 5 cm were measured; in 2005 and 2008 the plots were re-inventoried. In 2008, 84 species from 70 genera and 37 families were sampled; absolute density was 1,998 individuals/ha and basal area was 25.95 m2.ha-1. On the one hand, the absolute density of live individuals decreased from 2005 to 2008 (2,066 individuals/ha); on the other hand, the basal area increased in 2008 compared to 2005 (23.56 m2.ha-1) and 2002 (1,884 individuals/ha and 21.38 m2.ha-1). The species with the highest importance value in the period were Hirtella glandulosa, Tachigali vulgaris and Xylopia aromatica. Except for these three species, all other species underwent hierarchic changes in the importance value, indicating that most species frequently alternate. Community structure exhibited changes throughout the period; hence, we suggest investigations on the role of T. vulgaris in these changes, since environmental conditions caused by gap opening from the fall of senile individuals of this pioneer species with a short life cycle may contribute to community dynamics.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602011000200425&lng=en&tlng=enalterações estruturaisparcelas permanentesTachigali vulgaris |
| spellingShingle | Daniel David Franczak Beatriz Schwantes Marimon Ben Hur Marimon-Junior Henrique Augusto Mews Leandro Maracahipes Edmar Almeida de Oliveira Changes in the structure of a savanna forest over a six-year period in the Amazon-Cerrado transition, Mato Grosso state, Brazil Rodriguésia alterações estruturais parcelas permanentes Tachigali vulgaris |
| title | Changes in the structure of a savanna forest over a six-year period in the Amazon-Cerrado transition, Mato Grosso state, Brazil |
| title_full | Changes in the structure of a savanna forest over a six-year period in the Amazon-Cerrado transition, Mato Grosso state, Brazil |
| title_fullStr | Changes in the structure of a savanna forest over a six-year period in the Amazon-Cerrado transition, Mato Grosso state, Brazil |
| title_full_unstemmed | Changes in the structure of a savanna forest over a six-year period in the Amazon-Cerrado transition, Mato Grosso state, Brazil |
| title_short | Changes in the structure of a savanna forest over a six-year period in the Amazon-Cerrado transition, Mato Grosso state, Brazil |
| title_sort | changes in the structure of a savanna forest over a six year period in the amazon cerrado transition mato grosso state brazil |
| topic | alterações estruturais parcelas permanentes Tachigali vulgaris |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602011000200425&lng=en&tlng=en |
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