Heterospecific Facilitation of Forest-Boundary Crossing by Mobbing Understory Birds in North-Central Florida

The Auk ◽  
2004 ◽  
Vol 121 (3) ◽  
pp. 738-751 ◽  
Author(s):  
Kathryn E. Sieving ◽  
Thomas A. Contreras
Keyword(s):  
Boundary Crossing ◽  
North Central ◽  
Central Florida ◽  
Understory Birds ◽  
Forest Boundary

scholarly journals Heterospecific Facilitation of Forest-Boundary Crossing by Mobbing Understory Birds in North-Central Florida

The Auk ◽  
2004 ◽  
Vol 121 (3) ◽  
pp. 738-751
Author(s):  
Kathryn E. Sieving ◽  
Thomas A. Contreras ◽  
Kimberly L. Maute
Keyword(s):  
Bird Species ◽  
Forest Edge ◽  
Forest Birds ◽  
Boundary Crossing ◽  
Vegetative Cover ◽  
North Central ◽  
Fragmented Landscapes ◽  
Central Florida ◽  
Tufted Titmouse ◽  
Forest Boundary

Abstract Perception of predation risk by animals living in habitat mosaics moderates movement behaviors, potentially influencing the connectivity of landscapes. Perception of risk varies with environmental factors, which opens the possibility of managing connectivity for animals in fragmented landscapes. Observing understory forest birds wintering in north-central Florida, we tested the hypothesis that the presence of the Tufted Titmouse (Baeolophus bicolor), a vigilant, socially dominant flocking species, would increase the propensity of multispecies flocks engaged in mobbing to cross forest boundaries and move into open areas. Eastern Screech-Owl (Megascops asio) calls were broadcast next to an owl model at sites within continuous oak forest habitats (control) or just outside of forest in either old-field habitats with clustered saplings and shrub cover (shrub treatment) or in early successional habitats (open treatment; 11 trials in each habitat). In both treatments (forest adjacent to open or shrub), models were positioned 15 m from forest boundaries in nonforest habitat. For each individual responding to the playback (i.e. that entered a 30-m radius around the model), we recorded the species and its proximity to the model using three distance classes: within 15 m (at the forest edge), 10 m (out in the open), and 1 m (at the model). Both greater vegetative cover and presence of titmice were significantly correlated with proportion of responding individuals and species that approached and crossed forest boundaries, and the effects were additive. We show experimentally that socially dominant titmice can facilitate forest-boundary crossing by other bird species, which suggests a potential mechanism defining connectivity in fragmented landscapes for wintering forest birds.

scholarly journals A Kleptoparasitic Cecidomyiid and Other Flies Associated With Spiders

1980 ◽  
Vol 87 (3-4) ◽  
pp. 337-348 ◽  
Author(s):  
John Sivinski ◽  
Mark Stowe
Keyword(s):  
North America ◽  
Mature Male ◽  
North Central ◽  
Central Florida ◽  
Single Exception ◽  
Dominant Member

Spiders and their webs are predictable sources of insect cadavers. A small number of animals regularly exploit this resource, either as kleptoparasites or commensals, depending on whether symbionts compete for the same prey (see Robinson and Robinson, 1977, for more detailed terminology). Among the thieves are specialized spiders (citations in Vollrath 1979a, 1979b), mature male and juvenile spiders (Stowe 1978, citations in Nyffeler and Benz 1980), Hemiptera (Davis and Russell 1969), a hummingbird (takes webbing in addition to small insects, Young 1971), panorpid scorpion-flies (Thornhill 1975), Lepidoptera larvae (Robinson 1978), wasps (Jeanne 1972), damselflies (Vollrath 1977), and a handful of flies (reviews in Knab 1915; Bristowe 1931, 1941; Lindner 1937; Richards 1953; Robinson and Robinson 1977). Only a few of the reports on Diptera kleptoparasites originate from North America (McCook 1889, Frost 1913, Downes and Smith 1969). With a single exception (Downes and Smith 1969), all of the previously described kleptoparasitic flies belong to the Brachycera and Cyclorrhapha. We report here on a surprisingly diverse kleptoparasitic Diptera fauna in north central Florida with a cecidomyiid (Nematocera) as its dominant member.

The Many and Changing Faces of Ògún

2012 ◽  
Vol 16 (1) ◽  
pp. 13-35
Author(s):  
Robin Poynor
Keyword(s):  
South Carolina ◽  
Atlantic World ◽  
North Central ◽  
Central Florida ◽  
Religious Competition ◽  
The Many ◽  
The Way

Ògún, the Yorùbá god of iron, is venerated throughout the Atlantic world. While many African-based religions coexist in Florida, the shrines discussed here were developed by individuals connected with Oyotunji Village in South Carolina. South Florida's urban shrines differ remarkably from north central Florida's rural shrines. I suggest several factors determine this variation: changing characteristics of Ògún, differing circumstances of the shrines' creators, the environment in which the owners work, and whether the setting is urban or rural. Urban shrines reflect religious competition where many manifestations of òrìṣà worship coexist but are not in agreement. In these shrines, Ògún is vengeful protector. The urban shrines tend to be visually strident, filled with jagged forms of protective weapons. In rural north central Florida, Ògún is clearer of the way, a builder, and reflects the personalities of those who venerate him. These shrines are less harsh and are filled with tools.

scholarly journals Exposure to Paper Mill Effluent at a Site in North Central Florida Elicits Molecular-Level Changes in Gene Expression Indicative of Progesterone and Androgen Exposure

PLoS ONE ◽  
2014 ◽  
Vol 9 (9) ◽  
pp. e106644 ◽  
Author(s):  
Erica K. Brockmeier ◽  
B. Sumith Jayasinghe ◽  
William E. Pine ◽  
Krystan A. Wilkinson ◽  
Nancy D. Denslow
Keyword(s):  
Gene Expression ◽  
Molecular Level ◽  
Paper Mill ◽  
North Central ◽  
Paper Mill Effluent ◽  
Central Florida ◽  
Androgen Exposure ◽  
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