Physostemon guianense
Schultesia guianensis
Ipomoea subincana
Mitracarpus longicalyx
Waltheria americana
Portulaca hirsutissima
DISPERSION SYNDROMES AND LIFE FORMS OF HERBACEOUS SPECIES AS TOOLS FOR THE
EVALUATION OF RESILIENCE IN DRY FOREST AREAS
Ana Caroline Coelho Pereira da Silva1,2; Erivânia Virtuoso Rodrigues Ferreira1; Juliano Ricardo Fabricante1; José Alves de Siqueira Filho1,3
(1) Reference Center for the Recovery of Degraded Areas (CRAD), Federal University of the São Francisco Valley - UNIVASF, Petrolina, Pernambuco, Brazil.
(2) Agronomic Engineering Collegiate, UNIVASF, Petrolina, Pernambuco, Brazil. [email protected]
(3) Biological Sciences Collegiate, UNIVASF, Petrolina, Pernambuco, Brazil.
49th Annual Meeting of the Association
for Tropical Biology & Conservation
INTRODUTION
The dry areas existing in the semi-arid region of the Brazilian Northeast
present a strong biodiversity, which is still scarcely known. The dispersion
of fruit and seeds is a form to ensure the conservation of vegetal species,
allowing for the recruiting of new plants.
OBJECTIVE
The objective of this paper was to study the dispersion of seeds and the
forms of life of the species present in a Caatinga area.
MATERIALS AND METHODS
Data collection:
Collect of fertile material.
Herborization and incorporation to the
collection of HVASF.
Species identification and consultation
literature.
Dispersion syndromes and life forms.
Table 1. Dispersion syndromes and life forms of sampled species.
Family/Specie
AMARANTHACEAE
Froelichia humboldtiana Roem & Schult.
CACTACEAE
Tacinga inamoena (K. Schum.) N.P. Taylor & Stuppy
CAPPARACEAE
Physostemon guianense (Aubl.) Malme
Physostemon tenuifolium Mart. & Zucc.
CONVOLVULACEAE
Jacquemontia linarioides Meisn.
Ipomoea subincana (Choisy) Meisn.
CYPERACEAE
Cyperus uncinulatus Schrad. ex Nees
Eleocharis geniculata R.Br.
Pycreus capillifolius C.B.Clarke
EUPHORBIACEAE
Bernardia sidoides (Klotzsch) Müll.Arg.
Croton glandulosus L.
Cnidoscolus quercifolius Pohl
FABACEAE
Aeschynomene viscidula Michx.
Chamaecrista calycioides (Collad.) Greene
Chamaecrista nictitans Moench
Chamaecrista repens (Vogel) H.S. Irwin & Barneby
Chamaecrista serpens (L.) Greene
Mimosa filipes Mart.
Mimosa tenuiflora (Willd.) Poir.
Poincianella microphylla (Mart. ex G. Don) L.P. Queiroz
GENTIANACEAE
Schultesia guianensis (Aubl.) Malme
LAMIACEAE
Eriope tumidicaulis Harley
MALVACEAE
Herissantia crispa (L.) Brizicky
Sida angustissima A.St.-Hil.
Sida galheirensis Ulbr.
Waltheria operculata Rose
Waltheria americana L.
PHYTOLACCACEAE
Microtea paniculata Moq.
PLANTAGINACEAE
Angelonia cornigera Hook.
POACEAE
Anthephora hermaphrodita (L.) Kuntze
Aristida adscensionis Sw.
Cenchrus echinatus L.
Chloris barbata Sw.
Dactyloctenium aegyptium (L.) Willd.
Digitaria ciliaris (Retz.) Koeler
Eragrostis ciliaris (L.) R. Br.
Eragrostis maypurensis (Kunth) Steud.
Eragrostis rufescens Roem. & Schult.
Leptochloa virgata (L.) P. Beauv.
Melinis repens (Willd.) Zizka
Paspalum scutatum Nees
Tragus berteronianus Schult.
Urochloa mollis (Sw.) Morrone & Zuloaga
PORTULACACEAE
Portulaca elatior Mart.
Portulaca halimoides L.
Portulaca mucronata Link
RUBIACEAE
Borreria densiflora DC.
Diodella teres Small
Mitracarpus baturitensis Sucre
Mitracarpus longicalyx E. B. Souza & M. F. Sales
Staelia virgata (Link ex Roem. & Schult.) K.Schum.
SOLANACEAE
Solanum gardneri Sendtn.
TURNERACEAE
Piriqueta duarteana (Cambess.) Urb.
Turnera pumilea L.
Anemochorous Autochorous Zoochorous
Life forms
1
0
0
Therophyte
0
0
1
Nanophanerophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Therophyte
1
0
0
Therophyte
1
0
0
Therophyte
1
0
0
Therophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Mesophanerophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Microphanerophyte
0
1
0
Microphanerophyte
0
1
0
Therophyte
1
0
0
Therophyte
0
1
0
Camephyte
0
1
0
Therophyte
0
1
0
Camephyte
0
1
0
Camephyte
0
1
0
Camephyte
1
0
0
Therophyte
0
1
0
Therophyte
1
0
0
Therophyte
1
0
0
Camephyte
1
0
0
Camephyte
0
0
1
Camephyte
1
0
0
Therophyte
1
0
0
Therophyte
1
0
0
Therophyte
1
0
0
Therophyte
1
0
0
Therophyte
1
0
0
Therophyte
1
0
0
Therophyte
1
0
0
Therophyte
1
0
0
Therophyte
1
0
0
Therophyte
1
0
0
Hemicryptophyte
1
0
0
Hemicryptophyte
0
1
0
Hemicryptophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
1
0
Therophyte
0
0
1
Camephyte
0
1
0
Therophyte
0
1
0
Therophyte
CONCLUSION
•Low representativity of dispersers in the environment studied,
certainly due to the absence of attractive conditions for them;
RESULTS
Life forms
Therophytes
Nanophanerophytes
Mesophanerophytes
Dispersion syndromes
55,5%
Camephytes
Hemicryptophytes
Microphanerophytes
•The high presence of therophytes suggest that the site, in spite
of being free from impacts for 10 years, has hardly advanced
successionally.
40%
2% 5% 2% 4%
15%
5,5%
72%
Anemochorous
Figure 1. Life forms of the species under study.
Physostemon guianense
Autochorous
Zoochorous
Figure 2. Dispersion syndromes of the species under study.
Mitracarpus longicalyx
Ipomoea subincana
Schultesia guianensis
Waltheria americana
Portulaca hirsutissima