Floristics, structure and diversity of tree communities of two Gallery Forests in the Federal District, Brazil

Silveira, Irving Martins; Souza, Fernanda Coelho de; Haidar, Ricardo Flores; Brandão, Miguel Marinho Vieira; Salles, Leandro de Almeida; Froes, Marcos Gabriel Durães; Arcela, Vicente; Rezende, Alba Valéria

doi:10.5902/1980509847958

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Articles • Ci. Fl. 34 (2) • 2024 • https://doi.org/10.5902/1980509847958 copy

Floristics, structure and diversity of tree communities of two Gallery Forests in the Federal District, Brazil

Florística, estrutura e diversidade das comunidades lenhosas de duas Matas de Galeria no Distrito Federal, Brasil

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Gallery Forests are narrow strips of tropical forests that occur along water courses. This vegetation type is common in Central Brazil and is extremely relevant for the biodiversity conservation, maintenance of ecological processes and water regulation. Therefore, the aim of this study was to evaluate the woody vegetation in two gallery forests in the Federal District, called Ribeirão gallery forest (RGF) and Pitoco gallery forest (PGF). Fifty plots of 10 m x 10 m were sampled in each forest, and all trees with DBH ≥ 5 cm were measured. In each forest, we conducted analysis on phytosociological parameters, diameter and height distributions, and diversity indexes. We registered 1,571 woody individuals, belonging to 150 species, among which, 94 were recorded in the forest of Ribeirão (RGF) and 96 in the forest of Pitoco (PGF). Although only 40 species (26.7%) occurred in both forests, the Chao-Sorensen similarity index was 0.478, showing the high Beta diversity within these formations. The species richness of the two forests is above the average observed in other gallery forests in Brazil, with Shannon diversity index (H’) equal to 3.86 for RGF and 3.96 for PGF, and the Pielou evenness index (J’) equal to 0.85 and 0.87, respectively. The diametric distribution of both forests showed the reverse J-shaped pattern, suggesting communities with satisfactory regeneration. Floristic and structural distinctions both between and within forests, alongside the observed high richness, indicate great biological heterogeneity, in response to the different environmental conditions. This underscores the importance of maintaining ecological corridors to facilitate gene flow and species dispersal among different gallery forests.

Keywords
Cerrado; Ecology; Conservation; Phytosociology; Riparian zones

Nº.	Reference	Year	Local	State	S.I. (ha)	Richness	D (ind ^ha-1)	Do (m² ^ha-1)	Hۥ
1	Present study	2024	Ribeirão - PNB/APA of Cafuringa	DF	0,5	94	1530	15,73	3,86
2	Present study	2024	Pitoco - RECOR-IBGE	DF	0,5	98	1628	31,46	3,96
3	Lenza et al.	2015	Bacaba^* * DBH inclusion limit ≥ 3.0 cm;	MT	0,07	45	1800	33,3	-
4	Arcela et al.	2014	Ribeirão- PNB	DF	0,86	94	1675	31,5	-
5	Haidar et al.	2013	Ecol Station. of Águas Emendadas	DF	0,48	118	2317	33,15	3,99
6	Abreu et al.	2012	P. N. Chapada dos Guimarães	MT	1,08	168	1276	26,39	4,37
7	Matos & Felfili	2010	P. N. Sete Cidades	PI	0,56	75	1146	26,55	3,53
8	Felfili et al.	2007	P. N. Chapada dos Veadeiros	GO	0,3	46	1357	12,87	3,34
9			Alto Paraiso 1	GO	0,3	53	797	25,87	3,63
10			Alto Paradise 2	GO	0,3	41	672	24,08	3,07
11			Alto Paraiso 3	GO	0,3	54	875	23,03	3,57
12			Vila Propício 1	GO	0,3	74	1253	24	3,51
13			Vila Propício 2	GO	0,3	36	914	24,62	3,17
14	Dietzsch et al.	2006	Canjerana - IV	DF	0,28	68	1421	25,5	3,67
15	Dietzsch et al.	2006	Canjerana - II	DF	0,28	33	1475	31,3	2,57
16	Silva Júnior	2005	Pitoco - RECOR-IBGE	DF		99	1971	38,8	3,86
17	Silva Júnior	2004	Taquara - RECOR-IBGE	DF		110	1573	38,5	4,25
18	Marimon et al.	2002	High Bacaba^ DBH inclusion limit ≥ 15.0 cm;	MT	0,47	74	1023	20,44	3,84
19			Middle Bacaba	MT	0,47	86	962	22,28	4,08
20			Low Bacaba	MT	0,47	77	1351	23,46	3,57
21	Nóbrega et al.	2001	Cabeça de Veado- JBB	DF	1,84	186	1376	32,27	4,45
22	Sampaio et al.	2000	Riacho Fundo	DF	1,58	150	1574	26	4,15
23	Sampaio et al.	2000	Açudinho	DF	0,78	126	1159	30	4,25
24	Felfili	1997	Capetinga- FAL	DF	0,3	81	982	21,4	3,5
25	Felfili	1997	Ribeirão do Gama	DF	3,2	103	1350	41,2	3,9
26	Felfili et al.	1994	APA Gama e Cabeça de Veado	DF	0,3	84	1417	36,38	3,9
27			Brasilia National Park - PNB	DF	0,3	67	1645	32,73	3,4
28			Paracatu	MG	0,3	70	1364	19,77	3,6
29			Patrocínio	MG	0,3	141	1531	29,69	4,1
30			Silvânia	GO	0,3	111	1248	27,76	4

Universidade Federal de Santa Maria Av. Roraima, 1.000, 97105-900 Santa Maria RS Brasil, Tel. : (55 55)3220-8444 r.37, Fax: (55 55)3220-8444 r.22 - Santa Maria - RS - Brazil
E-mail: cienciaflorestal@ufsm.br

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[1] Source: Authors (2020)

[2] In where:

[TFN01] ^*
DBH inclusion limit ≥ 3.0 cm;

[TFN02] ^**
DBH inclusion limit ≥ 15.0 cm;

[5] 250 quadrant points (variable area);

[TFN03] ^***
It is important to note that diversity estimates were made for areas with different sampling intensities and that species richness and diversity do not vary linearly with the sampled area.