Bog lake, Spring Pond Troy Weldy

Bog lake, Spring Pond
Troy Weldy

System
Lacustrine
Subsystem
Natural Lakes And Ponds
State Protection
Not Listed
Not listed or protected by New York State.
Federal Protection
Not Listed
State Conservation Status Rank
S3
Vulnerable in New York - Vulnerable to disappearing from New York due to rarity or other factors (but not currently imperiled); typically 21 to 80 populations or locations in New York, few individuals, restricted range, few remaining acres (or miles of stream), and/or recent and widespread declines.
Global Conservation Status Rank
G4
Apparently Secure globally - Uncommon in the world but not rare; usually widespread, but may be rare in some parts of its range; possibly some cause for long-term concern due to declines or other factors.

Summary

Did you know?

A common feature of bog lakes is the development of a false bottom at a depth of about 0.3 to 0.9 m (1 to 3 ft) below the surface. The false bottom is composed of colloidal material and dissolved humus held in suspension that appears to be a more or less continuous bottom. When disturbed, the suspended material quickly clouds the upper layer of clear water, then slowly settles when the water becomes quiet again.

State Ranking Justification

There are several thousand occurrences statewide. Many occurrences are presumed to have good viability and are protected on public land or private conservation land. This community has statewide distribution, and includes several large, high quality examples especially in the Adirondacks. The current trend of this community is probably stable for occurrences on public land, or declining slightly elsewhere due to moderate threats related to development pressure or alteration to the natural hydrology. This community has declined moderately to substantially from historical numbers likely correlated with past hydrological alterations and excessive clearing/development of the surrounding landscape.

Short-term Trends

The numbers and acreage of bog lakes and ponds in New York have probably remained stable in recent decades as a result of wetland protection regulations. There may be a few cases of slight decline due to alteration of hydrology (e.g., ditching and impoundments) and reduced water quality from nutrient input from surrounding developed uplands.

Long-term Trends

The numbers and acreage of bog lakes and ponds in New York have probably declined moderately from historical numbers likely correlated to alteration of hydrology (e.g., ditching and impoundments) and reduced water quality from nutrient input from surrounding developed uplands. Peatlands may expand over and close smaller bog lakes and ponds over the long term (i.e., centuries) to form a "lake-fill bog" (Daman and French 1987).

Conservation and Management

Threats

Bog lakes and ponds are threatened by development in the surrounding landscape and its associated run-off (e.g., agricultural, residential, roads, railroads, golf courses, campgrounds), recreational overuse (e.g., boating, shoreline camping), and habitat alteration in the adjacent landscape (e.g., excessive logging, pollution, nutrient loading). Alteration to the natural hydrology is also a threat to this community (e.g., impoundments, blocked culverts). Bog lakes and ponds are threatened by invasive species, such as Eurasian milfoil (Myriophyllum spicatum).

Conservation Strategies and Management Practices

Where practical, maintain or increase the adjacent peatland and upland buffer to reduce storm-water, pollution, and nutrient run-off, while simultaneously capturing sediments before they reach the bog lake/pond. Buffer width should take into account the erodibility of the surrounding soils, slope steepness, and current land use. If possible, minimize the number and size of impervious surfaces in the surrounding landscape. Avoid habitat alteration within the lake and surrounding landscape. For example, roads should not be routed through the lakeshore buffer area. If a lake must be crossed, then bridges and boardwalks are preferred over filling and culverts. Restore lakes that have been affected by unnatural disturbance (e.g., remove obsolete impoundments and ditches in order to restore the natural hydrology). Prevent the spread of invasive exotic species into the lake through appropriate direct management, and by minimizing potential dispersal corridors.

Development and Mitigation Considerations

When considering road construction and other development activities minimize actions that will change what water carries and how water travels to this community, both on the surface and underground. Water traveling over-the-ground as run-off usually carries an abundance of silt, clay, and other particulates during (and often after) a construction project. While still suspended in the water, these particulates make it difficult for aquatic animals to find food; after settling to the bottom of the wetland, these particulates bury small plants and animals and alter the natural functions of the community in many other ways. Thus, road construction and development activities near this community type should strive to minimize particulate-laden run-off into this community. Water traveling on the ground or seeping through the ground also carries dissolved minerals and chemicals. Road salt, for example, is becoming an increasing problem both to natural communities and as a contaminant in household wells. Fertilizers, detergents, and other chemicals that increase the nutrient levels in wetlands cause algae blooms and eventually an oxygen-depleted environment where few animals can live. Herbicides and pesticides often travel far from where they are applied and have lasting effects on the quality of the natural community. So, road construction and other development activities should strive to consider: 1. how water moves through the ground, 2. the types of dissolved substances these development activities may release, and 3. how to minimize the potential for these dissolved substances to reach this natural community.

Inventory Needs

Survey for occurrences statewide to advance documentation and classification of bog lakes and ponds. A statewide review of bog lakes and ponds is desirable. Continue searching for bog lakes and ponds in good condition (A- to AB-ranked). Review and incorporate data on occurrences gathered by partner organizations (e.g., Adirondack Lakes Survey Corporation).

Research Needs

Research is needed to fill information gaps about bog lakes and ponds, especially to advance our understanding of their classification, hydrology, floristic variation, and characteristic fauna. In addition, there is a need to collect sufficient quantitative data to support the recognition of a higher pH variant tentatively called "circumneutral bog lake" and change the current name to "acidic bog lake." More data are needed to consider spitting this community into "bog lake" and "bog pond" types, perhaps by using a size threshold. Lastly, The distinction between meromictic lake and bog lake needs to be more critically evaluated, because occasionally bog lakes can also become meromictic or chemically stratified.

Rare Species

  • Acris crepitans (Northern Cricket Frog) (guide)
  • Enallagma laterale (New England Bluet) (guide)
  • Gavia immer (Common Loon) (guide)
  • Hippuris vulgaris (Mare's Tail) (guide)
  • Potamogeton pulcher (Spotted Pondweed) (guide)
  • Sparganium natans (Small Bur-reed) (guide)

Range

New York State Distribution

Bog lakes and ponds are sparsely scattered but widespread throughout New York State north of the Coastal Lowlands ecozone; especially common in the Adirondacks. They are limited to areas in the state where sufficient peat has accumulated within a basin or kettlehole leaving an open water "eye" within the peatland.

Global Distribution

This broadly-defined community may be worldwide. Examples with the greatest biotic affinities to New York occurrences are suspected to span north to southern Canada, west to Minnesota, southwest to Indiana and Tennessee, and southeast to South Carolina.

Best Places to See

  • Helldiver Pond, Moose River Plains Wild Forest (Hamilton County)
  • Spring Pond Bog Preserve

Identification Comments

General Description

The aquatic community of a dystrophic lake (an acidic lake with brownish water that contains a high amount of organic matter) that typically occurs in a small, shallow basin (e.g., a kettehole) that is protected from wind and is poorly drained. These lakes occur in areas with non-calcareous bedrock or glacial till; many are fringed or surrounded by a floating mat of vegetation (in New York usually either bog or poor fen). Characteristic features of a dystrophic lake include the following: murky water that is stained brown, with low transparency; water that is low in plant nutrients (especially low in calcium), with naturally low pH (less than 5.4); and the lake may have oxygen deficiencies in deeper water (the profundal zone). The lack of calcium blocks bacterial action, reducing the rate of decay of organic matter with subsequent accumulation of peat or muck sediments. Colloidal and dissolved humus material reduces transparency and increases acidity of the water. Species diversity in bog lakes is low in all types of aquatic organisms (phytoplankton, macrophytes, zooplankton, zoobenthos, and fish); many bog lakes have no fish at all. The abundance of each species present is also low in all types of organisms, except for aquatic macrophytes and peat mosses (Sphagnum spp.) along the edge of the bog mat. A common feature of bog lakes is the development of a false bottom at a depth of about 0.3 to 0.9 m (1 to 3 ft) below the surface. The false bottom is composed of colloidal material and dissolved humus held in suspension that appears to be a more or less continuous bottom. When disturbed, the suspended material quickly clouds the upper layer of clear water, then slowly settles when the water becomes quiet again. Occasionally bog lakes become meromictic or chemically stratified; the chemical gradient supercedes the usual stratification by temperature.

Characters Most Useful for Identification

Characteristic macrophytes include water-shield (Brasenia schreberi), fragrant white water lily (Nymphaea odorata), yellow pond-lily (Nuphar microphylla, and Nuphar variegata), bladderworts (Utricularia vulgaris, U. geminiscapa, U. purpurea), pondweeds (Potamogeton epihydrus, P. oakesianus), bur-reeds (Sparganium fluctuans, S. angustifolium), and clubrush (Scirpus subterminalis). Characteristic zooplankton may include the rotifers Keratella spp. and Brachionus spp. A characteristic fish is brown bullhead (Ameiurus nebulosus). Characteristic invertebrates include larvae of midges (Chironomus spp.) and phantom midges (Chaoborus spp.) in the benthos. Other characteristic invertebrates may include the amphipod Hyallela azteca, the mollusks Musculium spp. and Ferresia californica, and the midges Tribelos spp., Phaenopsectra spp., and Zalutschia spp.

Elevation Range

Known examples of this community have been found at elevations between 1,534 feet and 1,780 feet.

Best Time to See

Bog lakes and ponds are fun to explore in mid- to late summer by canoe when fragrant white water lily and spatter dock are in bloom. Frozen bog lakes can be easier to access on foot in the winter.

Bog Lake/Pond Images

Classification

International Vegetation Classification Associations

This New York natural community encompasses all or part of the concept of the following International Vegetation Classification (IVC) natural community associations. These are often described at finer resolution than New York's natural communities. The IVC is developed and maintained by NatureServe.

  • American White Water-lily - (Yellow Pond-lily, Variegated Yellow Pond-lily) Aquatic Vegetation (CEGL002562 )

NatureServe Ecological Systems

This New York natural community falls into the following ecological system(s). Ecological systems are often described at a coarser resolution than New York's natural communities and tend to represent clusters of associations found in similar environments. The ecological systems project is developed and maintained by NatureServe.

Characteristic Species

Emergent aquatics

Dulichium arundinaceum

Juncus

Floating-leaved aquatics

Brasenia schreberi (water-shield)

Nuphar microphylla (small-leaved yellow pond-lily, small-leaved spatter-dock)

Nuphar variegata (common yellow pond-lily, common spatter-dock)

Nymphaea odorata

Potamogeton epihydrus (ribbon-leaved pondweed)

Submerged aquatics

Schoenoplectus subterminalis (water bulrush)

Utricularia cornuta (horned bladderwort)

Similar Ecological Communities

  • Eutrophic dimictic lake
    The alkalinity of eutrophic dimictic lakes is higher than bog lakes (i.e., greater than 12.5 mg/l calcium carbonate). Eutrophic dimictic lakes are usually surrounded by mineral soil wetlands, such as deep and shallow emergent marshes and shrub swamps, whereas bog lakes are surrounded by acidic peatlands, such as dwarf shrub bogs, black spruce-tamarack bogs, and inland poor fens.
  • Eutrophic pond
    Eutrophic ponds are usually surrounded by mineral soil wetlands, such as deep and shallow emergent marshes, shrub swamps, and forested mineral soil wetlands, whereas bog lakes are surrounded by acidic peatlands, such as dwarf shrub bogs, black spruce-tamarack bogs, and inland poor fens.
  • Meromictic lake (guide)
    While both types are glacially-formed kettlehole lakes, bog lakes are usually in a large flat basin with a peatland margin, whereas meromictic lakes are typically surrounded by a steep-sloped, upland landsscape that protects the surface from wind and water mixing. If a chemocline is present in a bog lake, the water column should completely mix and the chemocline should become disrupted at least once per year, and thus not be permanently chemically stratified, otherwise the occurrence may grade into a meromictic lake. Meromictic lakes are alkaline (pH range 6-8), whereas bog lakes are acidic (ph 4). Bog lake water is tannin stained and acidic (pH 4), whereas meromictic lake water is usually green color and alkaline (pH range 6-8).

Vegetation

Floating-leaved aquatics
40%

Percent cover

This figure helps visualize the structure and "look" or "feel" of a typical Bog Lake/Pond. Each bar represents the amount of "coverage" for all the species growing at that height. Because layers overlap (shrubs may grow under trees, for example), the shaded regions can add up to more than 100%.

Additional Resources

References

Clausen, R.T. 1939. Aquatic vegetation of the Lake Ontario watershed. In: A biological survey of the Lake Ontario watershed, including all waters from Little Sandy Creek westward except the Genesee and Oswego River systems; supplemental to 29th annual report, Biological survey report XVI. pp 167-23.1

Cole, G.A. 1979. Textbook of limnology. The C.V. Mosby Co., Saint Louis, MO.

Edinger, G. J., D. J. Evans, S. Gebauer, T. G. Howard, D. M. Hunt, and A. M. Olivero (editors). 2014. Ecological Communities of New York State. Second Edition. A revised and expanded edition of Carol Reschke’s Ecological Communities of New York State. New York Natural Heritage Program, New York State Department of Environmental Conservation, Albany, NY. http://www.dec.ny.gov/docs/wildlife_pdf/ecocomm2014.pdf

Edinger, Gregory J., D.J. Evans, Shane Gebauer, Timothy G. Howard, David M. Hunt, and Adele M. Olivero (editors). 2002. Ecological Communities of New York State. Second Edition. A revised and expanded edition of Carol Reschke's Ecological Communities of New York State. (Draft for review). New York Natural Heritage Program, New York State Department of Environmental Conservation. Albany, NY. 136 pp.

Maitland, P.S. 1978. Biology of fresh waters. John Wiley, and Sons, New York.

New York Natural Heritage Program. 2019. New York Natural Heritage Program Databases. Albany, NY.

Nichols, W. F. 2015. Natural Freshwater Lakes and Ponds in New Hampshire: Draft Classification. NH Natural Heritage Bureau, Concord, NH.

Olivero-Sheldon, A. and M.G. Anderson. 2016. Northeast Lake and Pond Classification. The Nature Conservancy, Eastern Conservation Science, Eastern Regional Office. Boston, MA.

Reschke, Carol. 1990. Ecological communities of New York State. New York Natural Heritage Program, New York State Department of Environmental Conservation. Latham, NY. 96 pp. plus xi.

Links

About This Guide

This guide was authored by: Gregory J. Edinger

Information for this guide was last updated on: March 8, 2019

Please cite this page as:
New York Natural Heritage Program. 2019. Online Conservation Guide for Bog lake/pond. Available from: https://guides.nynhp.org/bog-lakepond/. Accessed May 26, 2019.

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