Multiple Brooding and Productivity of a Neotropical Migrant, the Black-Throated Blue Warbler (Dendroica caerulescens), in an Unfragmented Temperate Forest

The Auk ◽  
1992 ◽  
Vol 109 (2) ◽  
pp. 321-333 ◽  
Author(s):  
Richard T. Holmes ◽  
Thomas W. Sherry ◽  
Peter P. Marra ◽  
Kenneth E. Petit
Keyword(s):  
Temperate Forest ◽  
Neotropical Migrant ◽  
Dendroica Caerulescens

Effects of forest–clearcut edges on a forest-breeding songbird

2002 ◽  
Vol 80 (6) ◽  
pp. 1026-1037 ◽  
Author(s):  
Rebecca J Harris ◽  
J Michael Reed
Keyword(s):  
Reproductive Success ◽  
Food Source ◽  
Forest Landscape ◽  
Resource Abundance ◽  
Neotropical Migrant ◽  
Dendroica Caerulescens ◽  
Forestry Practices ◽  
Forest Sites ◽  
Interior Forest ◽  
Negative Impacts

To understand local and regional changes in Neotropical migrant songbird populations it is important to determine whether forest-breeders can use and persist in the dynamic, variegated landscapes created by modern forestry practices. We made detailed observations of a species classified as a mature-forest specialist, the black-throated blue warbler (Dendroica caerulescens), adjacent to clearcut edges and in intact forest in a large industrial forest landscape. We measured reproductive success, habitat use, resource abundance, the potential for inter- and intra-specific competition, and predator densities. Unlike most studies of edge effects, our study showed both positive and negative impacts of associations with edges. We recorded a lower density of potential avian competitors within intact forest, as well as a higher proportion of older male black-throated blue warblers at interior forest sites. In addition, proportionally more fledglings were observed in intact forest. However, males at edge sites had higher pairing success and edges had higher understory density (which is positively associated with reproductive success in other studies), evidence of higher abundance of their primary food source and lower densities of diurnal egg and nestling predators. The net result of these mixed patterns is that males gaining a territory at edge or interior sites appeared to have similar probabilities of producing fledglings.

scholarly journals Territorial Movements of Black-throated Blue Warblers in a Landscape Fragmented by Forestry

The Auk ◽  
2001 ◽  
Vol 118 (2) ◽  
pp. 544-549 ◽  
Author(s):  
Rebecca J. Harris ◽  
J. Michael Reed
Keyword(s):  
Bird Species ◽  
Small Scale ◽  
Neotropical Migrant ◽  
Dendroica Caerulescens ◽  
Alarm Calling ◽  
Second Year ◽  
Simulated Territorial Intrusion ◽  
Territorial Intrusion ◽  
Song Playback ◽  
Older Males

Abstract Many forest bird species show inhibition to entering open areas, including crossing habitat gaps. We examined the responses of Black-throated Blue Warblers (Dendroica caerulescens) to conspecific song playback within forest, at clearcut-forest ecotones, and across logging roads to assess movements of this Neotropical migrant into open areas. Males responded readily to song playbacks in all areas, and moved significantly farther into clearcuts than they did within intact forest (40.4 ± 2.9 m and 17.1 ± 1.2 m, respectively). Their singing, aggressive trilling, and alarm-calling rates were highest in response to playback from clearcuts, intermediate during road-crossings, and lowest within forest. Males moved farthest into the oldest regenerating clearcuts (>15 years old), indicating that vegetation structure also influences their movement into open areas. Second-year males were more responsive than older males, moving farther to reach speakers in all areas, and showing a nonsignificant trend of moving farther into clearcuts. We found that extensive movements into open areas occur in response to simulated territorial intrusion, indicating that small-scale habitat fragmentation by forestry may not disrupt territorial movements of that species.

NPP TEMPERATE FOREST: HUMBOLDT REDWOODS STATE PARK, CALIFORNIA, U.S.A., 1972-2001

2005 ◽  
Author(s):  
R. T. BUSING ◽  
T. FUJIMORI
Keyword(s):  
Temperate Forest

Soil microbial community response to nitrogen and phosphorous fertilization in a temperate forest nursery

2018 ◽  
Vol 51 (2) ◽  
Author(s):  
Muhammad Razaq ◽  
Muhammad Sajjad Haider ◽  
Salah Uddin ◽  
Liu Chunping ◽  
Hai-Long Shen ◽  
...  
Keyword(s):  
Microbial Community ◽  
Soil Microbial Community ◽  
Temperate Forest ◽  
Community Response ◽  
Forest Nursery ◽  
Soil Microbial
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