My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
1999-287
CBCC
>
Official Documents
>
1990's
>
1999
>
1999-287
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/12/2024 2:10:06 PM
Creation date
1/12/2024 12:27:03 PM
Metadata
Fields
Template:
Official Documents
Official Document Type
Miscellaneous
Approved Date
11/16/1999
Control Number
1999-287
Subject
Final Draft for Sebastian Area-Wide FL Scrub-Jay Habitat Conservation Plan
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
148
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
i' <br />km). On the Gulf Coast, Thaxton and Hingtgen (1996) reported average dispersal <br />distances in urban areas to be 5 miles for females and 1.2 miles (1.9 km) males. <br />These urban dispersal patterns contrast significantly with those documented for <br />contiguous, optimal scrub at Archbold Biological Station where mean dispersal <br />distances for females are 0.6 miles (1.0 km) and for males are 0.2 miles (0.3 km) <br />(Woolfenden and Fitzpatrick 1984). <br />Scrub -jays in the Sebastian study area dispersed and nested at earlier ages than in <br />undisturbed scrub systems. A total of 41 known -age dispersals were documented <br />during the study (26 females and 15 males). The mean age of dispersing females <br />was 14.2 months (range=4 to 36 months). The mean age of dispersing males <br />was 28.2 months (range =11 to 60 months) (Toland unpubl. data). Breeding by <br />yearlings, especially females, was relatively common during the Sebastian scrub -jay <br />study (Toland unpubl, data). Florida scrub -jays will breed earlier than normal when <br />the chance arises in disturbed landscapes subject to population declines (Breininger <br />1999). Nesting by yearlings has also been reported for scrub -jay subpopulations in <br />Palm Bay and the South Brevard County barrier island (Breininger 1999). <br />During 1993, Indian River County and the City of Sebastian were censused for <br />Florida scrub -jays as part of the Florida state-wide survey (Fitzpatrick et al. 1994b). <br />This survey resulted in documentation of 52 families of scrub -jays in Indian River <br />County: none on the barrier island, 12 on the Ten Mile Ridge, and 40 on the <br />Atlantic Coastal Ridge (Toland 1993, 1996). The majority of remaining scrub -jay <br />families in Indian River County continued to persist in the incorporated limits of the <br />City of Sebastian, where scrub -jay territories declined from 35 in 1991 to 27 in <br />1993 (Toland unpubl. data, Toland 1996). Most of the territories that were <br />abandoned were in outlying parcels of the Sebastian Highlands that were composed <br />of predominantly disturbed, overgrown mesic fiatwood and paltnetto-lyonia <br />shrubland vegetation, including slash pine (Pinus elliottir), cabbage palm (Sabal <br />palmetto), wax myrtle (Myrica cerifera), galiberry (Ilex glabra), saw palmetto <br />(Serenoa repens), 'fetterbush (Lyonia fruticosa), and staggerbush (L. hicida), as well <br />as landscaped lawns, ornamental plants, and scattered live oaks (Quercus <br />virginiana). This disturbed matrix habitat characterizes the majority of the habitat <br />fragments remaining within the platted residential lots of Sebastian Highlands. <br />The 1996 Florida scrub -jay population census for Sebastian documented a <br />continued decline down to 20 breeding pairs (Toland 1996, unpubl, data). <br />During late summer/early fall of 1998, known remaining territories were censused <br />for 51 hours between July 191" and October 14"' in support of this HCP. Following <br />survey methods used since 1988 (Fitzpatrick el al. 1991), this study documented <br />the loss of 4 more territories within the Sebastian Highlands subdivision, resulting <br />in a total of 16 territories within the incorporated limits of the City of Sebastian. <br />This represents a 54% population decline from the 35 breeding pairs documented <br />in the City of Sebastian in 1991 (Toland unpubl. data). The location of those <br />38 <br />
The URL can be used to link to this page
Your browser does not support the video tag.