Adirondack Mountains
(Area - 2,558,600 ha)

Executive Summary


 

 

Adirondack Mountains
Plan
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Adirondack Mountains Maps
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Adirondack Mountains Table
Priority Tables


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Adirondack MountainsDescription - Most of the Adirondacks region consists of an ancient dome of Precambrian rock, similar geologically to the Canadian Shield, but also includes the Tug Hill Upland,which is more similar geologically to the Allegheny Plateau. Landforms include high Appalachian peaks (roughly 90 peaks surpass 1000 m), as well as a broad zone of lower mountains and foothills ranging down to 120 m in elevation. The area is dominated by a combination of maple-beech-birch and red spruce-balsam fir forest, but also includes numerous glacial lakes and bogs, as well as alpine communities. Roughly 2.2 million ha. are covered with forest today, with nearly half of this area consisting of state-owned Forest Preserve and most of the remainder in private industrial timberland. The most pervasive human influence on the natural landscape has been through commercial timber harvest and production, resulting in early removal of dominant white pine, hemlock, and old-growth spruce, and a gradual shift towards greater dominance by northern hardwoods. Although total acreage and volume of the Adirondack forests have increased steadily since 1900, harvest and removal of timber also has increased by nearly 90% since 1968. Harvest today is primarily by means of selective cutting of single trees; therefore age structure and species composition of the forest will continue to be affected without creating additional areas of early successional vegetation. Today, human population is low and limited in distribution, with roughly xxx ha devoted to pastureland or residential development.

Priority Bird Populations and Habitats
Mountaintop stunted conifer woodland
PIF Bicknell's Thrush
(AI=5, PT=3, TB=2; % population -50?)
Roughly 28,400 ha of mountaintop habitat may support 50% of the world's breeding population of this species. A monitoring program for this species and its habitat is urgently needed.

Northern hardwood - mixed forest
PIF Canada Warbler
(AI=5, PT=5, TB=3; % population - 1.2)
Declining nearly throughout its range, this species favors dense understory, especially in wet areas.
PIF Black-throated Blue Warbler
(AI=5, PT=2, TB=2; % population - 5.1)
Large and apparently stable population; requires dense deciduous understory, especially hobblebush.
Objective: Roughly 175,000 ha of northern hardwood forest is required to support the entire habitat suite of species (at optimum densities), with 110,000 ha suitable to support 50,000-55,000 pairs of Black-throated Blue Warblers and 15,000-20,000 pairs of Canada Warblers.

Early successional forest/edge
PIF Golden-winged Warbler
(AI=2, PT=3, TB=4; % population - <1)
Rare in this area, but with exacting habitat needs for shrubby growth at lower elevations that results from farmland abandonment or beaver activity.
PIF American Woodcock
(AI=3, PT=5, TB=3; % population - <1)
Shows steep population declines; requires combination of forest clearings, second-growth hardwoods, and moist soils for foraging.
PIF Chestnut-sided Warbler
(AI=5, PT=5, TB=2; % population - 1.7)
Abundant, yet declining, this species has a broad tolerance of disturbed and successional forest habitats.
PIF Olive-sided Flycatcher
(AI=3, PT=5, TB=3; % population - <1)
Could be included as a forest edge bird, but can also occur around natural openings such as peatlands. This bird is experiencing a mysterious and precipitous population decline nearly throughout its range.
Objective: Roughly 127,000 ha of disturbed or successional habitat is required to sustain 125,000 pairs of Chestnut-sided Warblers, with 1,000 ha managed specifically to support 500+ pairs of Golden-winged Warblers.

Mature coniferous forest
PIF Bay-breasted Warbler
(AI=2, PT=4, TB=3; % population - <1)
This is a high priority species, but is rare in this physiographic area; favors mature spruce.
PIF Blackburnian Warbler
(AI=5, PT=2, TB=2; % population - 2.6)
This species occurs here in the highest relative abundance of any physiographic area and may better represent the spruce-fir warbler community.
PIF Spruce Grouse
(AI=2 , PT=3, TB=3; % population - <1)
Listed as endangered in New York; represents disjunct boreal bird species community with very specific habitat needs.
Objective: Roughly 125,000 ha of mature coniferous forest is required to support 50,000-55,000 pairs of Blackburnian Warblers, with 5,000+ ha (25-30 patches) at low elevations managed (mixture of age classes and ericaceous ground cover) to support 300- 500 pairs of Spruce Grouse and other boreal species.

Complete Physiographic Area Priority Scores (Zipped, Dbase5 file 288K)
Key to Abbreviations: AI-Area Importance, PT-Population Trend, TB-Threats to Breeding. Priority Setting Process: General / Detailed


Conservation recommendations and needs - Clearly, any successful landbird conservation plan in this region must reconcile the needs of long-term, sustainable timber production and the habitat needs of high-priority bird species. Loss of the economic sustainability of commercial forestry could result in conversion of forest habitats to urban development or other less bird-friendly landscapes. The primary goal of this bird conservation plan is to ensure the long-term maintenance of all important forest types in the future landscape mosaic. This must be achieved through careful forest planning on both private and public lands. Large portions of the Adirondack Mountain region are under the jurisdiction of the Adirondack Park Agency, thus simplifying the implementation of conservation planning. In addition, commitments by several large timber companies would ensure that conservation objectives are met over vast areas. Specific recommendations and needs include:
• apply GIS-based spatial monitoring protocol to survey and monitor high- elevation habitats for Bicknell's Thrush
• maintain a balance of forest-age structures, including adequate amounts of mid-successional as well as late-successional forest (both coniferous and northern hardwood)
• identify and designate Bird Conservation Areas (BCA), within which long-term sustainability of priority bird populations is a primary management objective
• determine specific habitat needs (and causes of declines) for Canada Warbler; why, for example, is Canada Warbler declining while Black-throated Blue Warbler is stable, if both require shrubby understory of mature forest?
• manage known Golden-winged Warbler breeding sites to maintain beaver activity or other disturbance level
• relate effects of woodcock (and other game) habitat management techniques to other priority, early-successional bird species
• implement New York DEC recovery plan objectives for Spruce Grouse
 
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Please send comments to:
Kenneth Rosenberg, PIF Northeast Regional Coordinator
kvr2@cornell.edu