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Population reconstruction model to analyze harvest and banding data for mourning doves in South Carolina.

机译:人口重建模型,用于分析南卡罗来纳州哀悼鸽子的收割和绑带数据。

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摘要

Mourning dove (Zenaida macroura) call count indices for South Carolina indicate a negative trend over the past 42 years (1.2% decline per year, p 0.05). Total harvest estimates in the state increased from 2003-2007. Banding data from doves banded in South Carolina and data from annual examinations of harvested mourning dove wings during 2003--2007 were collected and analyzed. Data sets used contained 6,600 banded doves and 21,240 harvested dove wings. Survival estimates from band recovery analyses for adult and juvenile doves were 0.44 (+/- 0.04 SE) and 0.35 (+/- 0.06 SE), respectively. Survival rates were constant from year to year while recovery rates differed annually for adults and juveniles. The average natural mortality estimates for adults and juveniles in the presence of hunting were 0.45 +/- 0.122 and 0.47 +/- 0.189, respectively, during the study period. The average harvest and kill rates for adults and juveniles were also estimated. Age-at-harvest ratios adapted from annual wing examinations during the harvest were used with recovery rates to derive estimates of annual productivity in the population. Linear regression analysis of productivity estimates found a significant decline in productivity during 2003-2007 (-0.21, p 0.10). The average productivity estimate was 1.43 (+/- 0.33 SE) juveniles per adult and the estimated productivity required to maintain a stable population was 1.60 (+/- 0.30 SE). The effects of constant survival rates, varying hunting mortality estimates and declining productivity estimates were discussed in relation to breeding populations in rural areas of South Carolina.
机译:南卡罗来纳州的哀悼鸽子(Zenaida macroura)呼叫计数指数表明,过去42年间呈负趋势(每年下降1.2%,p <0.05)。该州的总收成估计数从2003年至2007年有所增加。收集并分析了2003--2007年南卡罗来纳州带状鸽子的带状数据和年度哀悼鸽翅膀的检查数据。所使用的数据集包含6,600条带状斑鸠和21,240个收获的鸽子翅膀。从成年鸽和幼鸽的波段恢复分析得出的生存估计分别为0.44(+/- 0.04 SE)和0.35(+/- 0.06 SE)。每年的成活率是恒定的,而成年和少年的成活率每年都不同。在研究期间,有狩猎的成年人和少年的平均自然死亡率估计分别为0.45 +/- 0.122和0.47 +/- 0.189。还估计了成年人和少年的平均收成率和杀死率。采收期的年度机翼检查所采用的收成年龄比率与恢复率一起用于得出人口年生产力的估计值。生产率估计值的线性回归分析发现,2003-2007年期间生产率显着下降(-0.21,p <0.10)。估计的平均生产力为每名成年人1.43(+/- 0.33 SE)少年,维持稳定人口所需的估计生产力为1.60(+/- 0.30 SE)。讨论了与南卡罗来纳州农村地区的繁殖种群有关的恒定存活率,不同的狩猎死亡率估计值和生产率估计值下降的影响。

著录项

  • 作者

    Chumbley, Christopher Alan.;

  • 作者单位

    Clemson University.;

  • 授予单位 Clemson University.;
  • 学科 Agriculture Forestry and Wildlife.
  • 学位 M.S.
  • 年度 2009
  • 页码 77 p.
  • 总页数 77
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 森林生物学;
  • 关键词

  • 入库时间 2022-08-17 11:38:29

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