Deboer J.A.,Grand Valley State University |
Deboer J.A.,Nebraska Cooperative Fish and Wildlife Research Unit |
Ogren S.A.,Little River Band of Ottawa Indians |
Holtgren J.M.,Little River Band of Ottawa Indians |
Snyder E.B.,Grand Valley State University
American Midland Naturalist | Year: 2011
Resident fish exhibited higher short-term resiliency than did non-resident fish to a 100 y flood in a low-gradient stream. In Jun. 2008, a substantial flood (400% higher than mean daily discharge) occurred in the Big Manistee River watershed in Michigan. Pre-and post-flood fish communities were sampled at two sites on Bear Creek, a 4th order tributary of the Big Manistee River. One site was low-gradient and dominated by sand; the second site was higher gradient and dominated by large woody debris and fine gravel. At both sites, post-flood fish communities were similar to pre-flood communities (Morisita's Index (Im) ≈ 0.8), especially for resident fish (Im ≈ 0.95). Total Catch Per Unit Effort (CPUE) of non-resident fish declined dramatically (5.2 to 1.4 fish per minute) in post-flood surveys, whereas CPUE of resident fish increased slightly (4.3 to 4.7) post-flood. Individual species response was site-dependent and mixed: CPUE of mottled sculpin and burbot increased post-flood, whereas CPUE of other resident species decreased. Resident non-native (i.e., rainbow trout) and non-resident non-native salmonids (i.e., Chinook salmon) experienced the most negative response, suggesting life-history traits of native fish encompass evolutionary adaptations to better persist through extreme disturbance events as compared to non-native salmonids. © 2011, American Midland Naturalist.
Mann K.A.,Little River Band of Ottawa Indians |
Marty Holtgren J.,Little River Band of Ottawa Indians |
Auer N.A.,Michigan Technological University |
Ogren S.A.,Little River Band of Ottawa Indians
North American Journal of Fisheries Management | Year: 2011
A streamside rearing facility (SRF) on the Big Manistee River, Michigan, was constructed for the purpose of rearing larval and age-0 lake sturgeon Acipenser fulvescens. Size, movement, and habitat selection were studied from 2007 to 2008 to determine whether there were differences between age-0 lake sturgeon reared in the streamside facility and natural cohorts. Lake sturgeon reared streamside showed no significant difference in length from their wild counterparts. Movement patterns were studied by attaching external radio transmitters to 17 age-0 streamside (198-250 mm total length) and 17 age-0 wild lake sturgeon (206-262 mm). The average weekly distances traveled by SRF fish ranged from 0.05-2.28 km (of 46 km surveyed) while wild fish traveled 0.04-2.81 km. In the river sections sampled, sand, pebble, and gravel comprised over 92.5% of the encountered substrates and Strauss index values indicated no differences in the presence of wild and SRF sturgeon over these substrates. Age-0 lake sturgeon were most often found in water 1.7mdeep with a velocity of 0.5 m/s, and no statistically significant differences were observed between wild and SRF sturgeon for either depth or velocity during the study years. By September, streamside-reared age-0 lake sturgeon attained a size similar to that of their wild cohorts and exhibited similar movement patterns and substrate association. © American Fisheries Society 2011.
Ogren S.A.,Little River Band of Ottawa Indians |
Huckins C.J.,Michigan Technological University
Ecological Indicators | Year: 2014
Researchers and managers within the Upper Midwest currently use a variety of sampling methodologies and biological indices to assess ecological condition of stream systems. With multiple entities collecting bioassessment data it is important that we determine the comparability of data and the indices derived from these data for effective assessment of natural systems. In this study we assessed the similarity of data collected by different agencies and we focused on data from one watershed to examine the outputs of different indices for stream assessment, and the temporal variation of index score within sites. We compared duplicate macroinvertebrate community data collected by the Little River Band of Ottawa Indians and the Michigan Department of Environmental Quality for overall community composition and index scores derived from these data. Duplicate samples were similar in composition index scores. Taxonomic resolution was addressed and indicated that genus level resolution gives a more favorable score when using indices. We also evaluated the utility of currently available macroinvertebrate indices of biotic integrity to assess data from the Big Manistee River watershed. The indices evaluated were the Hilsenhoff biotic index, the benthic community index for the Northern Lakes and Forests (NLFBCI), the Great Lakes Environmental Assessment Survey (GLEAS) procedure 51 for macroinvertebrates and a biological condition gradient model for the Upper Midwest. Outputs from the indices were moderately correlated (Spearman rank order correlation, r = 0.35-0.698) though they indicated different assessments of overall site integrity. Compared with larger scale regional indices, locally calibrated indices generally classified sites as having better biological condition. Replicate samples collected within sites indicated the GLEAS had higher levels of variability (0-265%CV) within sites than the other indices (<10%CV). Data from long-term (10 year) monitoring stations were used to evaluate seasonal and long-term index performance. There were differences in index score classifications from spring and fall samples indicating that standardization of sampling time is necessary for comparative analysis. Temporal trends over 10 years reveal natural variation and set the baseline for evaluating the influence of anthropogenic effects. Overall, results indicate that choice of index can alter assessment of site condition. For bioassessment in the Big Manistee River watershed the NLFBCI performs well and accurately reflects site condition. © 2014 Elsevier Ltd. All rights reserved.
Murray B.D.,Michigan Technological University |
Holmes S.A.,U.S. Department of Interior |
Webster C.R.,Michigan Technological University |
Witt J.C.,Little River Band of Ottawa Indians
PLoS ONE | Year: 2012
Opportunities to directly study infrequent forest disturbance events often lead to valuable information about vegetation dynamics. In mesic temperate forests of North America, stand-replacing crown fire occurs infrequently, with a return interval of 2000-3000 years. Rare chance events, however, may have profound impacts on the developmental trajectories of forest ecosystems. For example, it has been postulated that stand-replacing fire may have been an important factor in the establishment of eastern hemlock (Tsuga canadensis) stands in the northern Great Lakes region. Nevertheless, experimental evidence linking hemlock regeneration to non-anthropogenic fire is limited. To clarify this potential relationship, we monitored vegetation dynamics following a rare lightning-origin crown fire in a Wisconsin hemlock-hardwood forest. We also studied vegetation in bulldozer-created fire breaks and adjacent undisturbed forest. Our results indicate that hemlock establishment was rare in the burned area but moderately common in the scarified bulldozer lines compared to the reference area. Early-successional, non-arboreal species including Rubus spp., Vaccinium angustifolium, sedges (Carex spp.), grasses, Epilobium ciliatum, and Pteridium aquilinium were the most abundant post-fire species. Collectively, our results suggest that competing vegetation and moisture stress resulting from drought may reduce the efficacy of scarification treatments as well as the usefulness of fire for preparing a suitable seedbed for hemlock. The increasing prevalence of growing-season drought suggests that silvicultural strategies based on historic disturbance regimes may need to be reevaluated for mesic species. © 2012 Murray et al.