Phytosociological study of a riverine forest remnant from Taquari river, State of Rio Grande do Sul, Brazil

Lucheta, Fabiane; Nicolini, Gabriel; Ely Junior, Gerson Luiz; Tremarin, Marilaine; Teixeira, Marelise; Arend, Úrsula; Koch, Natália Mossmann; Freitas, Elisete Maria de

doi:10.1590/2236-8906-79/2017

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ARTICLES • Hoehnea 45 (1) • Mar 2018 • https://doi.org/10.1590/2236-8906-79/2017 copy

Phytosociological study of a riverine forest remnant from Taquari river, State of Rio Grande do Sul, Brazil

Estudo fitossociológico de um remanescente da floresta ribeirinha do rio Taquari, Estado do Rio Grande do Sul, Brasil

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Aiming to characterize the structure of the arboreal community in a riverine forest remnant of the Taquari river, State of Rio Grande do Sul, 42 sampling units of 100 m² (10 × 10 m) were located. Phytosociological parameters were also assessed and the indexes of Shannon diversity (H') and Pielou evenness (J) were evaluated. A total of 39 species, 21 families, 2.83 nats ind^-1 for H' and 0.77 for J were recorded. Among the species found, the endemic Callisthene inundata O.L. Bueno, A.D. Nilson & R.G. Magalh. and Picrasma crenata (Vell.) Engl. are included in the list of endangered species. The density found was of 1,557.14 ind ha^-1. Luehea divaricata Mart. and Lonchocarpus nitidus Benth. showed the highest indexes of importance values. Besides contributing to the knowledge of species distribution and community structure, this study points out the need for conservation of existing native forest remnants.

Keywords:
alien species; arboreal community; endemic species; riparian vegetation; Taquari-Antas river basin

Species	Family	Species code	Ni	BA	ADo	AD	AF	IVI
Luehea divaricata Mart.	Malvaceae	Ludi	60	4.57	10.89	142.86	57.14	15.06
Lonchocarpus nitidus Benth.	Fabaceae	Loni	124	1.61	3.84	295.24	78.57	13.36
Myrcia palustris DC.	Myrtaceae	Mypa	69	1.72	4.10	164.29	50.00	9.41
Terminalia australis Cambess.	Combretaceae	Teau	49	2.44	5.80	116.67	30.95	8.92
Gymnanthes klotzschiana Müll. Arg.	Euphorbiaceae	Gykl	55	0.96	2.27	130.95	59.52	7.60
Matayba elaeagnoides Radlk.	Sapindaceae	Mael	62	0.65	1.55	147.62	52.38	7.00
Pouteria salicifolia (Spreng.) Radlk.	Sapotaceae	Posa	27	1.61	3.84	64.29	33.33	6.25
Calyptranthes concinna DC.	Myrtaceae	Caco	35	0.33	0.80	83.33	35.71	4.18
Campomanesia xanthocarpa O.Berg	Myrtaceae	Caxa	24	0.41	0.97	57.14	30.95	3.54
Morus nigra L.^* * Exotic and # endemic species from Taquari-Antas river basin riparian vegetation	Moraceae	Moni	17	0.35	0.83	40.48	21.43	2.60
Eugenia uniflora L.	Myrtaceae	Euun	16	0.15	0.36	38.10	26.19	2.39
Parapiptadenia rigida (Benth.) Brenan	Fabaceae	Pari	12	0.14	0.33	28.57	23.81	2.04
Myrceugenia glaucescens (Cambess.) D.Legrand & Kausel	Myrtaceae	Mygl	10	0.32	0.77	23.81	14.29	1.85
Allophylus edulis (A.St.-Hil.) Niederl.	Sapindaceae	Aled	11	0.11	0.25	26.19	21.43	1.80
Campomanesia rhombea O.Berg	Myrtaceae	Carh	9	0.13	0.31	21.43	19.05	1.64
Myrsine laetevirens (Mez) Arechav.	Primulaceae	Myla	9	0.11	0.25	21.43	16.67	1.48
Vitex megapotamica (Spreng.) Moldenke	Lamiaceae	Vime	6	0.12	0.28	14.29	14.29	1.23
Hovenia dulcis Thunb.^* * Exotic and # endemic species from Taquari-Antas river basin riparian vegetation	Rhamnaceae	Hodu	7	0.20	0.46	16.67	9.52	1.21
Annona neosalicifolia H.Rainer	Annonaceae	Anne	6	0.05	0.12	14.29	9.52	0.87
Machaerium stipitatum Vogel	Fabaceae	Mast	5	0.06	0.14	11.90	9.52	0.84
Bauhinia forficata Link	Fabaceae	Bafo	4	0.01	0.04	9.52	9.52	0.69
Callisthene inundata O.L.Bueno , A.D. Nilson & R.G. Magalh.	Vochysiaceae	Cain	5	0.10	0.23	11.90	4.76	0.68
Gymnanthes schottiana Müll.Arg.	Euphorbiaceae	Gysc	4	0.05	0.12	9.52	7.14	0.65
Blepharocalyx salicifolius (Kunth) O.Berg	Myrtaceae	Blsa	4	0.04	0.10	9.52	7.14	0.63
Machaerium paraguariense Hassl.	Fabaceae	Mapa	3	0.07	0.16	7.14	4.76	0.52
Nectandra megapotamica Mez	Lauraceae	Neme	2	0.04	0.10	4.76	4.76	0.42
Trema micrantha (L.) Blume	Cannabaceae	Trmi	2	0.03	0.07	4.76	4.76	0.39
Alchornea triplinervia (Spreng.) Müll. Arg.	Euphorbiaceae	Altr	2	0.02	0.05	4.76	4.76	0.37
Guettarda uruguensis Cham. & Schltdl.	Rubiaceae	Guur	2	0.01	0.02	4.76	4.76	0.35
Casearia sylvestris Sw.	Salicaceae	Casy	2	0.01	0.02	4.76	4.76	0.35
Inga vera Willd.	Fabaceae	Inve	2	0.01	0.02	4.76	2.38	0.24
Roupala montana var. brasiliensis (Klotzsch) K.S.Edwards	Proteaceae	Romo	2	0.01	0.02	4.76	2.38	0.23
Tecoma stans (L.) Kunth ^* * Exotic and # endemic species from Taquari-Antas river basin riparian vegetation	Bignoniaceae	Test	1	0.01	0.02	2.38	2.38	0.18
Maclura tinctoria (L.) D.Don ex Steud.	Moraceae	Mati	1	0.01	0.02	2.38	2.38	0.18
Mollinedia schottiana Perkins	Monimiaceae	Mosc	1	0.01	0.01	2.38	2.38	0.18
Dalbergia frutescens (Vell.) Britton	Fabaceae	Dafr	1	0.00	0.01	2.38	2.38	0.17
Picrasma crenata Engl.	Simaroubaceae	Picr	1	0.00	0.01	2.38	2.38	0.17
Psidium guajava L.^* * Exotic and # endemic species from Taquari-Antas river basin riparian vegetation	Myrtaceae	Psgu	1	0.00	0.01	2.38	2.38	0.17
Sapium glandulatum (Vell.) Pax	Euphorbiaceae	Sagl	1	0.00	0.01	2.38	2.38	0.17
TOTAL			654	16.47	39.23	1557.1	692.86	100

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[1] 5Corresponding author: fabiane.lucheta@gmail.com