At Risk of Population Decline? An Ecological and Genetic Approach to the Threatened Palm Species Butia eriospatha (Arecaceae) of Southern Brazil

被引:30
|
作者
Nazareno, Alison G. [1 ]
dos Reis, Maurcio S. [1 ]
机构
[1] Univ Fed Santa Catarina, Nucleo Pesquisas Florestas Trop, BR-88040900 Florianopolis, SC, Brazil
关键词
Atlantic Forest; cattle farming; conservation biology; effective population size; RAIN-FOREST; DIVERSITY; CONSEQUENCES; CONSERVATION; VIABILITY;
D O I
10.1093/jhered/est065
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
To estimate the risk of population decline for the threatened palm species Butia eriospatha, we investigated the patterns of demography, natural regeneration, herbivory, and the levels of genetic diversity using 9 microsatellite loci from both adults and seedlings sampled from 4 populations in Southern Brazil (n 330). Our results indicate that cattle grazing in B. eriospatha population areas severely affect their demographic structure. Three B. eriospatha populations showed a bimodal age structure made up of adult plants and seedlings and high rates (> 77%) of livestock herbivory. For 1 population, we describe and quantify for the first time the occurrence of 6 ontogenetic stages for this threatened palm species. Populations of B. eriospatha showed high levels of genetic differentiation (F-ST adult plants 0.287, F-ST seedlings 0.175). The amount of observed heterozygosity differed significantly between small (H-O 0.329) and large populations (H-O 0.461), indicating that small populations can be more susceptible to genetic drift. With no recruitment and a mortality rate of 2.0%, we show that the populations investigated in this study would be at an extremely high risk of local extinction, with a greater than 50% reduction in the effective population size, in the next 40 years. Although this study highlights the importance of analyzing both population ecology parameters and genetic data to better understand the level of risk facing threatened species, we emphasize that policy actions are urgently needed for effective conservation of this vulnerable biological resource.
引用
收藏
页码:120 / 129
页数:10
相关论文
共 22 条
  • [1] MICROSATELLITE MARKERS FOR BUTIA ERIOSPATHA (ARECACEAE), A VULNERABLE PALM SPECIES FROM THE ATLANTIC RAINFOREST OF BRAZIL
    Nazareno, Alison G.
    Zucchi, Maria I.
    dos Reis, Mauricio S.
    [J]. AMERICAN JOURNAL OF BOTANY, 2011, 98 (07) : E198 - E200
  • [2] Where did they come from? Genetic diversity and forensic investigation of the threatened palm species Butia eriospatha
    Nazareno, Alison Goncalves
    dos Reis, Mauricio Sedrez
    [J]. CONSERVATION GENETICS, 2014, 15 (02) : 441 - 452
  • [3] Where did they come from? Genetic diversity and forensic investigation of the threatened palm species Butia eriospatha
    Alison Gonçalves Nazareno
    Maurício Sedrez dos Reis
    [J]. Conservation Genetics, 2014, 15 : 441 - 452
  • [4] Linking Phenology to Mating System: Exploring the Reproductive Biology of the Threatened Palm Species Butia eriospatha
    Nazareno, Alison Goncalves
    dos Reis, Mauricio Sedrez
    [J]. JOURNAL OF HEREDITY, 2012, 103 (06) : 842 - 852
  • [5] TRADITIONAL KNOWLEDGE ASSOCIATED WITH THE USE OF BUTIA PALM (Butia spp., Arecaceae) IN THE SOUTHERN OF BRAZIL
    Buttow, Miriam Valli
    Barbieri, Rosa Lia
    Neitzke, Raquel Silviana
    Heiden, Gustavo
    [J]. REVISTA BRASILEIRA DE FRUTICULTURA, 2009, 31 (04) : 1069 - 1075
  • [6] Bird visits and resource use in Butia odorata (Arecaceae) palm groves in southern Brazil
    da Gloria, Cyro Menezes
    Tozetti, Alexandro Marques
    [J]. IHERINGIA SERIE ZOOLOGIA, 2021, 111
  • [7] Seasonal cycle of seed dormancy controls the recruitment of Butia odorata (ARECACEAE) seedlings in savanna-like palm tree formations in southern Brazil
    Schlindwein, Gilson
    Duarte Schlindwein, Carolina Casco
    Dillenburg, Lucia Rebello
    [J]. AUSTRAL ECOLOGY, 2019, 44 (08) : 1398 - 1409
  • [8] Patterns of genetic diversity and structure of a threatened palm species (Euterpe edulis Arecaceae) from the Brazilian Atlantic Forest
    Aléxia Gonçalves Pereira
    Marcia Flores da Silva Ferreira
    Thamyres Cardoso da Silveira
    José Henrique Soler-Guilhen
    Guilherme Bravim Canal
    Luziane Brandão Alves
    Francine Alves Nogueira de Almeida
    Fernanda Amato Gaiotto
    Adésio Ferreira
    [J]. Heredity, 2022, 129 : 161 - 168
  • [9] Population Biology of Palm Heart (Euterpe edulis Martius–Arecaceae) in Managed Landscape Units in Southern Brazil
    Lucas de Souza Milanesi
    Tiago Montagna
    Maurício Sedrez dos Reis
    Nivaldo Peroni
    [J]. Economic Botany, 2021, 75 : 144 - 157
  • [10] Population Biology of Palm Heart (Euterpe edulis Martius-Arecaceae) in Managed Landscape Units in Southern Brazil
    Milanesi, Lucas de Souza
    Montagna, Tiago
    dos Reis, Mauricio Sedrez
    Peroni, Nivaldo
    [J]. ECONOMIC BOTANY, 2021, 75 (02) : 144 - 157