Artículo

Bessega, C.; Pometti, C.; Campos, C.; Saidman, B.O.; Vilardi, J.C."Implications of mating system and pollen dispersal indices for management and conservation of the semi-arid species Prosopis flexuosa (Leguminosae)" (2017) Forest Ecology and Management. 400:218-227
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Abstract:

Recruitment by fencing of semi-arid trees is a common woodland conservation strategy that may have both positive and negative implications. Domestic herbivores can act as efficient dispersal seed agents but they can also affect the survival and growth of the trees first stages. Prosopis flexuosa (algarrobo) woodlands represent the most important plant community in the Monte region in Argentina and as this resource is affected by deforestation, grazing, natural fires and replacement of natural ecosystems by croplands, in order to protect the “algarrobo” a reserve had been established. As efficient management and conservation program depends on the information on population structure and mating system, the objectives of this work were to estimate mating and pollen dispersal patterns in a wild P. flexuosa population from the Ñacuñan fenced to exclude domestic cattle for 40 years. This population is mainly outcrosser (tm = 0.996), sensitive to inbreeding depression at seed stage, having relative reduced pollen mediated gene dispersal distance (4.56–20.35 m), which favors inbreeding as a consequence of mating between related individuals. Our results suggest that for ex situ conservation the distance that would be enough to avoid full sib sampling among harvested seed-trees is about 20 m. Collecting seeds from different pods reduce the proportion of full sibs within progeny arrays. For in situ conservation it is important to take into account that forest patches separated by more than 250 m are expected to be isolated, increasing the risk of genetic variability loss, inbreeding increase and population extinction. The results are discussed in reference to the “algarrobo” management program; while in some case excluding big mammals from the stands should be advisable, the interaction with long dispersal big herbivores might be considered as a strategy to promote increased outbreeding reducing the rate of mating between related individuals. © 2017 Elsevier B.V.

Registro:

Documento: Artículo
Título:Implications of mating system and pollen dispersal indices for management and conservation of the semi-arid species Prosopis flexuosa (Leguminosae)
Autor:Bessega, C.; Pometti, C.; Campos, C.; Saidman, B.O.; Vilardi, J.C.
Filiación:Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento Ecología, Genética y Evolución, Buenos Aires, Argentina
CONICET-Universidad de Buenos Aires, Instituto de Ecología, Genética y Evolución (IEGEBA), Buenos Aires, Argentina
Instituto Argentino de Investigaciones de las zonas Áridas (UNCuyo-Gobierno de Mendoza-CONICET), Mendoza, Argentina
Palabras clave:Biparental inbreeding; Management; Microsatellites; Native forest; Outcrossing rate; Recruitment; Animals; Conservation; Deforestation; Forestry; Management; Plants (botany); Biparental inbreeding; Microsatellites; Native forests; Outcrossing rate; Recruitment; Information management; angiosperm; conservation management; conservation status; deforestation; forest ecosystem; genetic marker; genetic variation; growth; herbivore; inbreeding depression; outcrossing; plant community; pollen; population structure; recruitment (population dynamics); reproductive strategy; seed dispersal; semiarid region; survival; woodland; Deforestation; Ecosystems; Forest Management; Argentina; Monte; Bos taurus; Fabaceae; Mammalia; Prosopis flexuosa
Año:2017
Volumen:400
Página de inicio:218
Página de fin:227
DOI: http://dx.doi.org/10.1016/j.foreco.2017.06.007
Handle:http://hdl.handle.net/20.500.12110/paper_03781127_v400_n_p218_Bessega
Título revista:Forest Ecology and Management
Título revista abreviado:For. Ecol. Manage.
ISSN:03781127
CODEN:FECMD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03781127_v400_n_p218_Bessega

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Citas:

---------- APA ----------
Bessega, C., Pometti, C., Campos, C., Saidman, B.O. & Vilardi, J.C. (2017) . Implications of mating system and pollen dispersal indices for management and conservation of the semi-arid species Prosopis flexuosa (Leguminosae). Forest Ecology and Management, 400, 218-227.
http://dx.doi.org/10.1016/j.foreco.2017.06.007
---------- CHICAGO ----------
Bessega, C., Pometti, C., Campos, C., Saidman, B.O., Vilardi, J.C. "Implications of mating system and pollen dispersal indices for management and conservation of the semi-arid species Prosopis flexuosa (Leguminosae)" . Forest Ecology and Management 400 (2017) : 218-227.
http://dx.doi.org/10.1016/j.foreco.2017.06.007
---------- MLA ----------
Bessega, C., Pometti, C., Campos, C., Saidman, B.O., Vilardi, J.C. "Implications of mating system and pollen dispersal indices for management and conservation of the semi-arid species Prosopis flexuosa (Leguminosae)" . Forest Ecology and Management, vol. 400, 2017, pp. 218-227.
http://dx.doi.org/10.1016/j.foreco.2017.06.007
---------- VANCOUVER ----------
Bessega, C., Pometti, C., Campos, C., Saidman, B.O., Vilardi, J.C. Implications of mating system and pollen dispersal indices for management and conservation of the semi-arid species Prosopis flexuosa (Leguminosae). For. Ecol. Manage. 2017;400:218-227.
http://dx.doi.org/10.1016/j.foreco.2017.06.007