| the effect of urban growth on landscape-scale restoration for a fire-dependent songbird. | a landscape-scale perspective on restoration ecology has been advocated, but few studies have informed restoration with landscape metrics or addressed broad-scale threats. threats such as urban growth may affect restoration effectiveness in a landscape context. here, we studied longleaf pine savanna in the rapidly urbanizing southeastern united states where a habitat-specialist bird, bachman's sparrow (peucaea aestivalis), is closely associated with savanna vegetation structure and frequent fire ... | 2017 | 28088724 |
| adaptation to ephemeral habitat may overcome natural barriers and severe habitat fragmentation in a fire-dependent species, the bachman's sparrow (peucaea aestivalis). | bachman's sparrow (peucaea aestivalis) is a fire-dependent species that has undergone range-wide population declines in recent decades. we examined genetic diversity in bachman's sparrows to determine whether natural barriers have led to distinct population units and to assess the effect of anthropogenic habitat loss and fragmentation. genetic diversity was examined across the geographic range by genotyping 226 individuals at 18 microsatellite loci and sequencing 48 individuals at mitochondrial ... | 2014 | 25180939 |
| population dynamics in complex landscapes: a case study. | the abundance and distribution of natural populations can be strongly influenced by the types and arrangement of habitat patches within a landscape. the impact of landscape changes on population dynamics is difficult to study using conventional population models and field techniques. spatially explicit simulation models provide a powerful method for modelling landscape and population changes at large spatial scales and may prove useful as a management tool for mobile animal populations. as an ex ... | 1992 | 27759202 |