The ecological impacts of fragmentation and vegetation removal in Lake Huron’s coastal wetlands
Keywords:
Great Lakes, community composition, Public Act 14, beach groomingAbstract
Many Great Lakes coastal wetlands that remain today have been heavily fragmented by anthropogenic activities. The rate of fragmentation tends to increase during periods of low lake levels, especially in areas of low-gradient bathymetry where wetland area expands substantially and prompts the desire to dredge channels and groom shorelines. We sampled fish and invertebrates, using fyke nets and dipnets respectively, from wetland fragments paired with either areas where wetland vegetation was mowed or removed completely. Our concurrent studies showed that removal of vegetation by beach grooming and channel dredging created conduits for pelagic water to infiltrate the marsh and disrupt the ambient chemical/physical conditions. Alterations to both fish and macroinvertebrate communities were also evident where a significant amount of vegetation was removed. However, where only enough vegetation was removed to allow for boat access, impacts on fish communities were generally non-detectable. Mowing seemed to impact fish, but not invertebrates. Our data suggest that wetland fragmentation may have substantial and long lasting effects on wetland biota, but the magnitude of the impact is likely associated with the area of vegetation removed coupled with the potential for pelagic water to penetrate remaining fragments.
References
Aizen, M. A. and Feinsinger, P. 1994. Forest fragmentation, pollination, and plant reproduction in a Chaco dry forest, Argentina. Ecology, 75: 330–351.
APHA (American Public Health Association). 1998. Standard Methods for the Evaluation of Water and Wastewater. , 20th edition, Washington, DC: APHA.
Benoit, L. K. and Askins, R. A. 2002. Relationship between habitat area and the distribution of tidal marsh birds. Wilson Bull., 114: 314–323.
Brazner, J. C. 1997. Regional, habitat, and human development influences on coastal wetland and beach fish assemblages in Green Bay, Lake Michigan. J. Great Lakes Res., 23: 36–51.
Burton, T. M., Uzarski, D. G., Gathman, J. P., Genet, J. A., Keas, B. E. and Stricker, C. A. 1999. Development of a preliminary invertebrate index of biotic integrity for Lake Huron coastal wetlands. Wetlands, 19: 869–882.
Burton, T. M., Stricker, C. A. and Uzarski, D. G. 2002. Effects of plant community composition and exposure to wave action on invertebrate habitat use of Lake Huron coastal wetlands. Lakes Reserv. Res. Manage., 7: 255–269.
Burton, T. M., Uzarski, D. G. and Genet, J. A. 2004. Invertebrate habitat use in relation to fetch and zonation in northern Lake Huron coastal wetlands. Aquat. Ecosyst. Health Manage, 7: 249–267.
Cardinale, B. J., Brady, V. J. and Burton, T. M. 1998. Changes in the abundance and diversity of coastal wetland fauna from the open water/macrophyte edge towards shore. Wetlands Ecol. and Manage., 6: 59–68.
Chen, J., Franklin, F. and Spies, T. 1992. Vegetation responses to edge environments in old growth Douglas-fir forests. Ecol. Appl., 2: 387–396.
Cwikiel, W. 1998. Living with Michigan's wetlands: A landowners guide. Third Printing, Conway, MI: Tip of the Mitt Watershed Council.
Dale, S., Mork, K., Solvang, R. and Plumptree, A. 2000. Edge effects on the understory bird community in a logged forest in Uganda. Conserv. Biol., 14: 265–276.
De March, B. G. E. 1981. “Hyalella azteca (Saussure)”. In Manual for the Culture of Selected Freshwater Invertebrates, Can. Publ. Fish. Aquat. Sci. 54 Edited by: Lawrence, S. G. 61–77.
De Szalay, F. A. and Resh, V. H. 1997. Responses of wetland invertebrates and plants important in waterfowl diets to burning and mowing of emergent vegetation. Wetlands, 17: 149–156.
De Szalay, F. A. and Resh, V. H. 2000. Factors influencing macroinvertebrate colonization of seasonal wetlands: responses to emergent plant cover. Freshwater Bio., 45: 295–308.
Diffendorfer, J. H., Gaines, M. S. and Holt, R. D. 1995. Habitat fragmentation and movements of three small mammals (Sigmodon, Microtus, and Peromyscus). Ecology, 76: 827–839.
Essen, P. E. 1994. Tree mortality patterns after experimental fragmentation of an old-growth conifer forest. Biol. Conserv., 68: 19–28.
Findley, C. S. and Houlihan, J. 1997. Anthropogenic correlates of species richness in southeastern Ontario wetlands. Conserv. Biol., 11: 1000–1009.
Gibbs, J. P. 2000. Wetland loss and biodiversity conservation. Conserv. Biol., 14: 314–317.
Groom, J. D. and Grubb, T. C. Jr. 2002. Bird species associated with riparian woodland in fragmented, temperate-deciduous forest. Conserv. Biol., 16: 832–836.
Hargrave, B. T. 1970. The utilization of benthic microflora by Hyalella azteca (Amphipoda). J. Anim. Ecol., 39: 427–437.
Heath, R. T. 1992. Nutrient dynamics in Great Lakes coastal wetlands: future directions. J. Great Lakes Res., 18: 590–602.
Hook, T. O., Eagan, N. M. and Webb, P. W. 2001. Habitat and human influences on larval fish assemblages in northern Lake Huron coastal marsh bays. Wetlands, 21: 281–291.
Hooftman, D. A. P. and Diemer, M. 2002. Effects of small habitat size and isolation on the population structure of common wetland plant species. Plant Biol., 4: 720–728.
Jokimaki, J., Huhta, E., Itamies, J. and Rahko, P. 1998. Distribution of arthropods in relation to forest patch size, edge, and stand characteristics. Can. J. For. Res., 28: 1068–1072.
Jules, E. S. 1998. Habitat fragmentation and demographic change for a common plant: Trillium in old-growth forest. Ecology, 79: 1645–1656.
Knutson, M. G., Sauer, J. R., Olsen, D. A., Mossman, M. J., Hemesath, L. M. and Lannoo, M. J. 1999. Effects of landscape composition and wetland fragmentation on frog and toad abundance and species richness in Iowa and Wisconsin, U. S. A. Conserv. Biol., 13: 1437–1446.
Keough, J. A., Thompson, T. A., Guntenspergen, G. R. and Wilcox, D. A. 1999. Hydrogeomorphic factors and ecosystem responses in coastal wetlands of the Great Lakes. Wetlands, 19: 821–834.
Kostecke, R. M., Smith, L. M. and Hands, H. M. 2005. Macroinvertebrate response to cattail management at Cheyenne Bottoms, Kansas, USA. Wetlands, 25: 758–763.
Krieger, K. M., Klarer, D. M., Heath, R. T. and Herdendorf, C. E. 1992. Coastal wetlands of the Laurentian Great Lakes: current knowledge and research needs. J. Great Lakes Res., 18: 525–528.
Lann, R. and Verboom, B. 1990. Effects of pool size and isolation on amphibian communities. Biol. Conserv., 54: 251–262.
Lienert, J. and Fischer, M. 2003. Habitat fragmentation affects the common wetland specialist Primula farinosa in north-east Switzerland. J. Ecol., 91: 587–599.
Laurance, W. F. and Yensen, E. 1991. Predicting the impacts of edge effects in fragmented habitats. Biol. Conserv., 55: 77–92.
Manolis, J. C., Andersen, D. E. and Cuthbert, F. J. 2002. Edge effect on nesting success of ground nesting birds near regenerating clearcuts in a forest-dominated landscape. Auk, 119: 955–970.
McKone, M. J., McLauchlan, K. K., Lebrun, E. G. and McCall, A. C. 2000. An edge effect caused by adult corn-rootworm beetles on sunflowers in tallgrass prarie remnants. Conserv. Biol., 15: 1315–1325.
Merritt, R. W. and Cummins, K. W., eds. 1996. An Introduction to the Aquatic Insects of North America, Third Edition., Dubuque, IA: Kendall/Hunt Publ. Co..
Pasitschniak, M. and Messier, F. 1995. Risks of predation on waterfowl nests in the Canadian prairies: effects of habitat edges and agricultural practices. Oikos, 73: 347–355.
Thorp, J. H. and Covich, A. P. 1991. Ecology and Classification of North American Freshwater Invertebrates, San Diego, CA: Academic Press Inc..
Uzarski, D. G., Burton, T. M. and Genet, J. A. 2004. Validation and performance of an invertebrate index of biotic integrity for Lakes Huron and Michigan fringing wetlands during a period of lake level decline. Aquat Ecosyst. Health Manage., 7: 269–288.
Uzarski, D. G., Burton, T. M., Cooper, M. J., Ingram, J. W. and Timmermans, S. T. A. 2005. Fish Habitat Use Within and Across Wetland Classes in Coastal Wetlands of the Five Great Lakes: Development of a Fish Based Index of Biotic Integrity. J. Great Lakes Res., 31(Suppl. 1): 171–187.
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